diff --git a/dist/less.js b/dist/less.js
index 98c00a7f7..17d34f139 100644
--- a/dist/less.js
+++ b/dist/less.js
@@ -1,8 +1,8 @@
 /*!
- * Less - Leaner CSS v2.7.3
+ * Less - Leaner CSS v3.0.0
  * http://lesscss.org
  *
- * Copyright (c) 2009-2017, Alexis Sellier <self@cloudhead.net>
+ * Copyright (c) 2009-2018, Alexis Sellier <self@cloudhead.net>
  * Licensed under the Apache-2.0 License.
  *
  */
@@ -56,22 +56,40 @@ module.exports = function(window, options) {
         options.onReady = true;
     }
 
+    options.javascriptEnabled = (options.javascriptEnabled || options.inlineJavaScript) ? true : false;
+
 };
 
-},{"./browser":3,"./utils":10}],2:[function(require,module,exports){
+},{"./browser":3,"./utils":11}],2:[function(require,module,exports){
 /**
  * Kicks off less and compiles any stylesheets
  * used in the browser distributed version of less
  * to kick-start less using the browser api
  */
-/*global window, document */
+/* global window, document */
+
+// TODO - consider switching this out for a recommendation for this polyfill?
+// <script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
+// Browsers have good Promise support
+require("promise/polyfill");
 
-// shim Promise if required
-require('promise/polyfill.js');
+var options = require('../less/default-options')();
 
-var options = window.less || {};
+if (window.less) {
+    for (key in window.less) {
+        if (window.less.hasOwnProperty(key)) {
+            options[key] = window.less[key];
+        }
+    }
+}
 require("./add-default-options")(window, options);
 
+options.plugins = options.plugins || [];
+
+if (window.LESS_PLUGINS) {
+    options.plugins = options.plugins.concat(window.LESS_PLUGINS);
+}
+
 var less = module.exports = require("./index")(window, options);
 
 window.less = less;
@@ -92,7 +110,7 @@ if (options.onReady) {
     if (/!watch/.test(window.location.hash)) {
         less.watch();
     }
-    // Simulate synchronous stylesheet loading by blocking page rendering
+    // Simulate synchronous stylesheet loading by hiding page rendering
     if (!options.async) {
         css = 'body { display: none !important }';
         head = document.head || document.getElementsByTagName('head')[0];
@@ -111,7 +129,7 @@ if (options.onReady) {
     less.pageLoadFinished = less.refresh(less.env === 'development').then(resolveOrReject, resolveOrReject);
 }
 
-},{"./add-default-options":1,"./index":8,"promise/polyfill.js":97}],3:[function(require,module,exports){
+},{"../less/default-options":16,"./add-default-options":1,"./index":8,"promise/polyfill":100}],3:[function(require,module,exports){
 var utils = require("./utils");
 module.exports = {
     createCSS: function (document, styles, sheet) {
@@ -177,7 +195,7 @@ module.exports = {
     }
 };
 
-},{"./utils":10}],4:[function(require,module,exports){
+},{"./utils":11}],4:[function(require,module,exports){
 // Cache system is a bit outdated and could do with work
 
 module.exports = function(window, options, logger) {
@@ -197,8 +215,8 @@ module.exports = function(window, options, logger) {
                     if (modifyVars) {
                         cache.setItem(path + ':vars', JSON.stringify(modifyVars));
                     }
-                } catch(e) {
-                    //TODO - could do with adding more robust error handling
+                } catch (e) {
+                    // TODO - could do with adding more robust error handling
                     logger.error('failed to save "' + path + '" to local storage for caching.');
                 }
             }
@@ -248,7 +266,7 @@ module.exports = function(window, less, options) {
             }
         };
 
-        if (e.extract) {
+        if (e.line) {
             errorline(e, 0, '');
             errorline(e, 1, 'line');
             errorline(e, 2, '');
@@ -336,7 +354,7 @@ module.exports = function(window, less, options) {
     }
 
     function removeErrorConsole(path) {
-        //no action
+        // no action
     }
 
     function removeError(path) {
@@ -354,7 +372,7 @@ module.exports = function(window, less, options) {
         var filename = e.filename || rootHref;
         var errors = [];
         var content = (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') +
-            " in " + filename + " ";
+            " in " + filename;
 
         var errorline = function (e, i, classname) {
             if (e.extract[i] !== undefined) {
@@ -364,11 +382,11 @@ module.exports = function(window, less, options) {
             }
         };
 
-        if (e.extract) {
+        if (e.line) {
             errorline(e, 0, '');
             errorline(e, 1, 'line');
             errorline(e, 2, '');
-            content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':\n' +
+            content += ' on line ' + e.line + ', column ' + (e.column + 1) + ':\n' +
                 errors.join('\n');
         }
         if (e.stack && (e.extract || options.logLevel >= 4)) {
@@ -393,8 +411,8 @@ module.exports = function(window, less, options) {
     };
 };
 
-},{"./browser":3,"./utils":10}],6:[function(require,module,exports){
-/*global window, XMLHttpRequest */
+},{"./browser":3,"./utils":11}],6:[function(require,module,exports){
+/* global window, XMLHttpRequest */
 
 module.exports = function(options, logger) {
 
@@ -402,22 +420,7 @@ module.exports = function(options, logger) {
 
     var fileCache = {};
 
-    //TODOS - move log somewhere. pathDiff and doing something similar in node. use pathDiff in the other browser file for the initial load
-
-    function getXMLHttpRequest() {
-        if (window.XMLHttpRequest && (window.location.protocol !== "file:" || !("ActiveXObject" in window))) {
-            return new XMLHttpRequest();
-        } else {
-            try {
-                /*global ActiveXObject */
-                return new ActiveXObject("Microsoft.XMLHTTP");
-            } catch (e) {
-                logger.error("browser doesn't support AJAX.");
-                return null;
-            }
-        }
-    }
-
+    // TODOS - move log somewhere. pathDiff and doing something similar in node. use pathDiff in the other browser file for the initial load
     var FileManager = function() {
     };
 
@@ -434,7 +437,7 @@ module.exports = function(options, logger) {
     };
     FileManager.prototype.doXHR = function doXHR(url, type, callback, errback) {
 
-        var xhr = getXMLHttpRequest();
+        var xhr = new XMLHttpRequest();
         var async = options.isFileProtocol ? options.fileAsync : true;
 
         if (typeof xhr.overrideMimeType === 'function') {
@@ -478,43 +481,50 @@ module.exports = function(options, logger) {
         fileCache = {};
     };
 
-    FileManager.prototype.loadFile = function loadFile(filename, currentDirectory, options, environment, callback) {
+    FileManager.prototype.loadFile = function loadFile(filename, currentDirectory, options, environment) {
+        // TODO: Add prefix support like less-node?
+        // What about multiple paths?
+
         if (currentDirectory && !this.isPathAbsolute(filename)) {
             filename = currentDirectory + filename;
         }
 
+        filename = options.ext ? this.tryAppendExtension(filename, options.ext) : filename;
+
         options = options || {};
 
         // sheet may be set to the stylesheet for the initial load or a collection of properties including
         // some context variables for imports
         var hrefParts = this.extractUrlParts(filename, window.location.href);
         var href      = hrefParts.url;
-
-        if (options.useFileCache && fileCache[href]) {
-            try {
-                var lessText = fileCache[href];
-                callback(null, { contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
-            } catch (e) {
-                callback({filename: href, message: "Error loading file " + href + " error was " + e.message});
+        var self      = this;
+        
+        return new Promise(function(resolve, reject) {
+            if (options.useFileCache && fileCache[href]) {
+                try {
+                    var lessText = fileCache[href];
+                    return resolve({ contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
+                } catch (e) {
+                    return reject({ filename: href, message: "Error loading file " + href + " error was " + e.message });
+                }
             }
-            return;
-        }
 
-        this.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
-            // per file cache
-            fileCache[href] = data;
+            self.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
+                // per file cache
+                fileCache[href] = data;
 
-            // Use remote copy (re-parse)
-            callback(null, { contents: data, filename: href, webInfo: { lastModified: lastModified }});
-        }, function doXHRError(status, url) {
-            callback({ type: 'File', message: "'" + url + "' wasn't found (" + status + ")", href: href });
+                // Use remote copy (re-parse)
+                resolve({ contents: data, filename: href, webInfo: { lastModified: lastModified }});
+            }, function doXHRError(status, url) {
+                reject({ type: 'File', message: "'" + url + "' wasn't found (" + status + ")", href: href });
+            });
         });
     };
 
     return FileManager;
 };
 
-},{"../less/environment/abstract-file-manager.js":15}],7:[function(require,module,exports){
+},{"../less/environment/abstract-file-manager.js":17}],7:[function(require,module,exports){
 module.exports = function() {
 
     var functionRegistry = require("./../less/functions/function-registry");
@@ -544,7 +554,7 @@ module.exports = function() {
     functionRegistry.addMultiple(imageFunctions);
 };
 
-},{"./../less/functions/function-registry":22}],8:[function(require,module,exports){
+},{"./../less/functions/function-registry":26}],8:[function(require,module,exports){
 //
 // index.js
 // Should expose the additional browser functions on to the less object
@@ -555,42 +565,29 @@ var addDataAttr = require("./utils").addDataAttr,
 module.exports = function(window, options) {
     var document = window.document;
     var less = require('../less')();
-
-    //module.exports = less;
+    
     less.options = options;
     var environment = less.environment,
         FileManager = require("./file-manager")(options, less.logger),
         fileManager = new FileManager();
     environment.addFileManager(fileManager);
     less.FileManager = FileManager;
+    less.PluginLoader = require("./plugin-loader");
 
     require("./log-listener")(less, options);
     var errors = require("./error-reporting")(window, less, options);
     var cache = less.cache = options.cache || require("./cache")(window, options, less.logger);
     require('./image-size')(less.environment);
 
-    //Setup user functions
+    // Setup user functions - Deprecate?
     if (options.functions) {
         less.functions.functionRegistry.addMultiple(options.functions);
     }
 
     var typePattern = /^text\/(x-)?less$/;
 
-    function postProcessCSS(styles) { // deprecated, use a plugin for postprocesstasks
-        if (options.postProcessor && typeof options.postProcessor === 'function') {
-            styles = options.postProcessor.call(styles, styles) || styles;
-        }
-        return styles;
-    }
-
     function clone(obj) {
-        var cloned = {};
-        for (var prop in obj) {
-            if (obj.hasOwnProperty(prop)) {
-                cloned[prop] = obj[prop];
-            }
-        }
-        return cloned;
+        return JSON.parse(JSON.stringify(obj || {}));
     }
 
     // only really needed for phantom
@@ -614,7 +611,7 @@ module.exports = function(window, options) {
                 var lessText = style.innerHTML || '';
                 instanceOptions.filename = document.location.href.replace(/#.*$/, '');
 
-                /*jshint loopfunc:true */
+                /* jshint loopfunc:true */
                 // use closure to store current style
                 less.render(lessText, instanceOptions,
                         bind(function(style, e, result) {
@@ -670,7 +667,7 @@ module.exports = function(window, options) {
 
             }
 
-            //TODO add tests around how this behaves when reloading
+            // TODO add tests around how this behaves when reloading
             errors.remove(path);
 
             instanceOptions.rootFileInfo = newFileInfo;
@@ -679,20 +676,20 @@ module.exports = function(window, options) {
                     e.href = path;
                     callback(e);
                 } else {
-                    result.css = postProcessCSS(result.css);
                     cache.setCSS(sheet.href, webInfo.lastModified, instanceOptions.modifyVars, result.css);
                     callback(null, result.css, data, sheet, webInfo, path);
                 }
             });
         }
 
-        fileManager.loadFile(sheet.href, null, instanceOptions, environment, function(e, loadedFile) {
-            if (e) {
-                callback(e);
-                return;
-            }
-            loadInitialFileCallback(loadedFile);
-        });
+        fileManager.loadFile(sheet.href, null, instanceOptions, environment)
+            .then(function(loadedFile) {
+                loadInitialFileCallback(loadedFile);
+            }).catch(function(err) {
+                console.log(err);
+                callback(err);
+            });
+
     }
 
     function loadStyleSheets(callback, reload, modifyVars) {
@@ -832,7 +829,7 @@ module.exports = function(window, options) {
     return less;
 };
 
-},{"../less":31,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./utils":10}],9:[function(require,module,exports){
+},{"../less":35,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],9:[function(require,module,exports){
 module.exports = function(less, options) {
 
     var logLevel_debug = 4,
@@ -878,6 +875,33 @@ module.exports = function(less, options) {
 };
 
 },{}],10:[function(require,module,exports){
+// TODO: Add tests for browser @plugin
+/*global window */
+
+var AbstractPluginLoader = require("../less/environment/abstract-plugin-loader.js");
+
+/**
+ * Browser Plugin Loader
+ */
+var PluginLoader = function(less) {
+    this.less = less;
+    // shim for browser require?
+    this.require = require;
+};
+
+PluginLoader.prototype = new AbstractPluginLoader();
+
+PluginLoader.prototype.loadPlugin = function(filename, basePath, context, environment, fileManager) {
+    return new Promise(function(fulfill, reject) {
+        fileManager.loadFile(filename, basePath, context, environment)
+            .then(fulfill).catch(reject);
+    });        
+};
+
+module.exports = PluginLoader;
+
+
+},{"../less/environment/abstract-plugin-loader.js":18}],11:[function(require,module,exports){
 module.exports = {
     extractId: function(href) {
         return href.replace(/^[a-z-]+:\/+?[^\/]+/, '')  // Remove protocol & domain
@@ -896,14 +920,14 @@ module.exports = {
                     try {
                         options[opt] = JSON.parse(tag.dataset[opt]);
                     }
-                    catch(_) {}
+                    catch (_) {}
                 }
             }
         }
     }
 };
 
-},{}],11:[function(require,module,exports){
+},{}],12:[function(require,module,exports){
 var contexts = {};
 module.exports = contexts;
 
@@ -946,18 +970,18 @@ contexts.Parse = function(options) {
 };
 
 var evalCopyProperties = [
-    'paths',          // additional include paths
-    'compress',       // whether to compress
-    'ieCompat',       // whether to enforce IE compatibility (IE8 data-uri)
-    'strictMath',     // whether math has to be within parenthesis
-    'strictUnits',    // whether units need to evaluate correctly
-    'sourceMap',      // whether to output a source map
-    'importMultiple', // whether we are currently importing multiple copies
-    'urlArgs',        // whether to add args into url tokens
-    'javascriptEnabled',// option - whether JavaScript is enabled. if undefined, defaults to true
-    'pluginManager',  // Used as the plugin manager for the session
-    'importantScope'  // used to bubble up !important statements
-    ];
+    'paths',             // additional include paths
+    'compress',          // whether to compress
+    'ieCompat',          // whether to enforce IE compatibility (IE8 data-uri)
+    'strictMath',        // whether math has to be within parenthesis
+    'strictUnits',       // whether units need to evaluate correctly
+    'sourceMap',         // whether to output a source map
+    'importMultiple',    // whether we are currently importing multiple copies
+    'urlArgs',           // whether to add args into url tokens
+    'javascriptEnabled', // option - whether Inline JavaScript is enabled. if undefined, defaults to false
+    'pluginManager',     // Used as the plugin manager for the session
+    'importantScope'     // used to bubble up !important statements
+];
 
 contexts.Eval = function(options, frames) {
     copyFromOriginal(options, this, evalCopyProperties);
@@ -979,7 +1003,11 @@ contexts.Eval.prototype.outOfParenthesis = function () {
     this.parensStack.pop();
 };
 
+contexts.Eval.prototype.mathOn = true;
 contexts.Eval.prototype.isMathOn = function () {
+    if (!this.mathOn) {
+        return false;
+    }
     return this.strictMath ? (this.parensStack && this.parensStack.length) : true;
 };
 
@@ -989,13 +1017,13 @@ contexts.Eval.prototype.isPathRelative = function (path) {
 
 contexts.Eval.prototype.normalizePath = function( path ) {
     var
-      segments = path.split("/").reverse(),
-      segment;
+        segments = path.split("/").reverse(),
+        segment;
 
     path = [];
     while (segments.length !== 0 ) {
         segment = segments.pop();
-        switch( segment ) {
+        switch ( segment ) {
             case ".":
                 break;
             case "..":
@@ -1014,9 +1042,9 @@ contexts.Eval.prototype.normalizePath = function( path ) {
     return path.join("/");
 };
 
-//todo - do the same for the toCSS ?
+// todo - do the same for the toCSS ?
 
-},{}],12:[function(require,module,exports){
+},{}],13:[function(require,module,exports){
 module.exports = {
     'aliceblue':'#f0f8ff',
     'antiquewhite':'#faebd7',
@@ -1167,13 +1195,13 @@ module.exports = {
     'yellow':'#ffff00',
     'yellowgreen':'#9acd32'
 };
-},{}],13:[function(require,module,exports){
+},{}],14:[function(require,module,exports){
 module.exports = {
     colors: require("./colors"),
     unitConversions: require("./unit-conversions")
 };
 
-},{"./colors":12,"./unit-conversions":14}],14:[function(require,module,exports){
+},{"./colors":13,"./unit-conversions":15}],15:[function(require,module,exports){
 module.exports = {
     length: {
         'm': 1,
@@ -1195,7 +1223,73 @@ module.exports = {
         'turn': 1
     }
 };
-},{}],15:[function(require,module,exports){
+},{}],16:[function(require,module,exports){
+// Export a new default each time
+module.exports = function() {
+    return {
+        /* Outputs a makefile import dependency list to stdout. */
+        depends: false,
+
+        /* Compress using less built-in compression. 
+         * This does an okay job but does not utilise all the tricks of 
+         * dedicated css compression. */
+        compress: false,
+
+        /* Runs the less parser and just reports errors without any output. */
+        lint: false,
+
+        /* Sets available include paths.
+         * If the file in an @import rule does not exist at that exact location, 
+         * less will look for it at the location(s) passed to this option. 
+         * You might use this for instance to specify a path to a library which 
+         * you want to be referenced simply and relatively in the less files. */
+        paths: [],
+
+        /* color output in the terminal */
+        color: true,
+
+        /* The strictImports controls whether the compiler will allow an @import inside of either 
+         * @media blocks or (a later addition) other selector blocks.
+         * See: https://github.com/less/less.js/issues/656 */
+        strictImports: false,
+
+        /* Allow Imports from Insecure HTTPS Hosts */
+        insecure: false,
+
+        /* Allows you to add a path to every generated import and url in your css. 
+         * This does not affect less import statements that are processed, just ones 
+         * that are left in the output css. */
+        rootpath: '',
+
+        /* By default URLs are kept as-is, so if you import a file in a sub-directory 
+         * that references an image, exactly the same URL will be output in the css. 
+         * This option allows you to re-write URL's in imported files so that the 
+         * URL is always relative to the base imported file */
+        relativeUrls: false,
+
+        /* Compatibility with IE8. Used for limiting data-uri length */
+        ieCompat: false,  // true until 3.0
+
+        /* Without this option on, Less will try and process all math in your css */
+        strictMath: false,
+
+        /* Without this option, less attempts to guess at the output unit when it does maths. */
+        strictUnits: false,
+
+        /* Effectively the declaration is put at the top of your base Less file, 
+         * meaning it can be used but it also can be overridden if this variable 
+         * is defined in the file. */
+        globalVars: null,
+
+        /* As opposed to the global variable option, this puts the declaration at the
+         * end of your base file, meaning it will override anything defined in your Less file. */
+        modifyVars: null,
+
+        /* This option allows you to specify a argument to go on to every URL.  */
+        urlArgs: ''
+    }
+}
+},{}],17:[function(require,module,exports){
 var abstractFileManager = function() {
 };
 
@@ -1233,13 +1327,14 @@ abstractFileManager.prototype.alwaysMakePathsAbsolute = function() {
 abstractFileManager.prototype.isPathAbsolute = function(filename) {
     return (/^(?:[a-z-]+:|\/|\\|#)/i).test(filename);
 };
-
+// TODO: pull out / replace?
 abstractFileManager.prototype.join = function(basePath, laterPath) {
     if (!basePath) {
         return laterPath;
     }
     return basePath + laterPath;
 };
+
 abstractFileManager.prototype.pathDiff = function pathDiff(url, baseUrl) {
     // diff between two paths to create a relative path
 
@@ -1273,7 +1368,7 @@ abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, ba
 
     var urlPartsRegex = /^((?:[a-z-]+:)?\/{2}(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i,
         urlParts = url.match(urlPartsRegex),
-        returner = {}, directories = [], i, baseUrlParts;
+        returner = {}, rawDirectories = [], directories = [], i, baseUrlParts;
 
     if (!urlParts) {
         throw new Error("Could not parse sheet href - '" + url + "'");
@@ -1292,27 +1387,26 @@ abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, ba
     }
 
     if (urlParts[3]) {
-        directories = urlParts[3].replace(/\\/g, "/").split("/");
+        rawDirectories = urlParts[3].replace(/\\/g, "/").split("/");
 
-        // extract out . before .. so .. doesn't absorb a non-directory
-        for (i = 0; i < directories.length; i++) {
-            if (directories[i] === ".") {
-                directories.splice(i, 1);
-                i -= 1;
-            }
-        }
+        // collapse '..' and skip '.'
+        for (i = 0; i < rawDirectories.length; i++) {
 
-        for (i = 0; i < directories.length; i++) {
-            if (directories[i] === ".." && i > 0) {
-                directories.splice(i - 1, 2);
-                i -= 2;
+            if (rawDirectories[i] === "..") {
+                directories.pop();
             }
+            else if (rawDirectories[i] !== ".") {
+                directories.push(rawDirectories[i]);
+            }
+        
         }
     }
 
     returner.hostPart = urlParts[1];
     returner.directories = directories;
+    returner.rawPath = (urlParts[1] || "") + rawDirectories.join("/");
     returner.path = (urlParts[1] || "") + directories.join("/");
+    returner.filename = urlParts[4];
     returner.fileUrl = returner.path + (urlParts[4] || "");
     returner.url = returner.fileUrl + (urlParts[5] || "");
     return returner;
@@ -1320,7 +1414,178 @@ abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, ba
 
 module.exports = abstractFileManager;
 
-},{}],16:[function(require,module,exports){
+},{}],18:[function(require,module,exports){
+var functionRegistry = require("../functions/function-registry"),
+    LessError = require('../less-error');
+
+var AbstractPluginLoader = function() {
+};
+
+function error(msg, type) {
+    throw new LessError(
+        {
+            type: type || 'Syntax',
+            message: msg
+        }
+    );
+}
+AbstractPluginLoader.prototype.evalPlugin = function(contents, context, imports, pluginOptions, fileInfo) {
+
+    var loader,
+        registry,
+        pluginObj,
+        localModule,
+        pluginManager,
+        filename;
+
+    pluginManager = context.pluginManager;
+
+    if (fileInfo) {
+        if (typeof fileInfo === "string") {
+            filename = fileInfo;
+        }
+        else {
+            filename = fileInfo.filename;
+        }
+    }
+    var shortname = (new this.less.FileManager()).extractUrlParts(filename).filename;
+
+    if (filename) {
+        pluginObj = pluginManager.get(filename);
+
+        if (pluginObj) {
+            this.trySetOptions(pluginObj, filename, shortname, pluginOptions);
+            try {
+                if (pluginObj.use) {
+                    pluginObj.use.call(this.context, pluginObj);
+                }
+            }
+            catch (e) {
+                e.message = 'Error during @plugin call';
+                return new this.less.LessError(e, imports, filename);
+            }
+            return pluginObj;
+        }
+    }
+    localModule = {
+        exports: {},
+        pluginManager: pluginManager,
+        fileInfo: fileInfo
+    };
+    registry = functionRegistry.create();
+    
+    var registerPlugin = function(obj) {
+        pluginObj = obj;
+    };
+
+    try {
+        loader = new Function("module", "require", "registerPlugin", "functions", "tree", "less", "fileInfo", contents);
+        loader(localModule, this.require, registerPlugin, registry, this.less.tree, this.less, fileInfo);
+    } catch (e) {
+        return new this.less.LessError(e, imports, filename);
+    }
+      
+    if (!pluginObj) {
+        pluginObj = localModule.exports;
+    }
+    pluginObj = this.validatePlugin(pluginObj, filename, shortname);
+
+    if (pluginObj) {
+        // Run on first load
+        pluginManager.addPlugin(pluginObj, fileInfo.filename, registry);
+        pluginObj.functions = registry.getLocalFunctions();
+        pluginObj.imports = imports;
+        pluginObj.filename = filename;
+
+        this.trySetOptions(pluginObj, filename, shortname, pluginOptions);
+
+        // Run every @plugin call
+        try {
+            if (pluginObj.use) {
+                pluginObj.use.call(this.context, pluginObj);
+            }
+        }
+        catch (e) {
+            e.message = 'Error during @plugin call';
+            return new this.less.LessError(e, imports, filename);
+        }
+        
+    }
+    else {
+        return new this.less.LessError({ message: "Not a valid plugin" });
+    }
+
+    return pluginObj;
+
+};
+
+AbstractPluginLoader.prototype.trySetOptions = function(plugin, filename, name, options) {
+    if (options) {
+        if (!plugin.setOptions) {
+            error("Options have been provided but the plugin " + name + " does not support any options.");
+            return null;
+        }
+        try {
+            plugin.setOptions(options);
+        }
+        catch (e) {
+            error("Error setting options on plugin " + name + '\n' + e.message);
+            return null;
+        }
+    }
+};
+
+AbstractPluginLoader.prototype.validatePlugin = function(plugin, filename, name) {
+    if (plugin) {
+        // support plugins being a function
+        // so that the plugin can be more usable programmatically
+        if (typeof plugin === "function") {
+            plugin = new plugin();
+        }
+
+        if (plugin.minVersion) {
+            if (this.compareVersion(plugin.minVersion, this.less.version) < 0) {
+                error("Plugin " + name + " requires version " + this.versionToString(plugin.minVersion));
+                return null;
+            }
+        }
+        return plugin;
+    }
+    return null;
+};
+
+AbstractPluginLoader.prototype.compareVersion = function(aVersion, bVersion) {
+    if (typeof aVersion === "string") {
+        aVersion = aVersion.match(/^(\d+)\.?(\d+)?\.?(\d+)?/);
+        aVersion.shift();
+    }
+    for (var i = 0; i < aVersion.length; i++) {
+        if (aVersion[i] !== bVersion[i]) {
+            return parseInt(aVersion[i]) > parseInt(bVersion[i]) ? -1 : 1;
+        }
+    }
+    return 0;
+};
+AbstractPluginLoader.prototype.versionToString = function(version) {
+    var versionString = "";
+    for (var i = 0; i < version.length; i++) {
+        versionString += (versionString ? "." : "") + version[i];
+    }
+    return versionString;
+};
+AbstractPluginLoader.prototype.printUsage = function(plugins) {
+    for (var i = 0; i < plugins.length; i++) {
+        var plugin = plugins[i];
+        if (plugin.printUsage) {
+            plugin.printUsage();
+        }
+    }
+};
+
+module.exports = AbstractPluginLoader;
+
+
+},{"../functions/function-registry":26,"../less-error":36}],19:[function(require,module,exports){
 var logger = require("../logger");
 var environment = function(externalEnvironment, fileManagers) {
     this.fileManagers = fileManagers || [];
@@ -1373,7 +1638,24 @@ environment.prototype.clearFileManagers = function () {
 
 module.exports = environment;
 
-},{"../logger":33}],17:[function(require,module,exports){
+},{"../logger":37}],20:[function(require,module,exports){
+
+var functionRegistry = require("./function-registry"),
+    Anonymous = require("../tree/anonymous"),
+    Keyword = require("../tree/keyword");
+
+functionRegistry.addMultiple({
+    boolean: function(condition) {
+        return condition ? Keyword.True : Keyword.False;
+    },
+
+    'if': function(condition, trueValue, falseValue) {
+        return condition ? trueValue
+            : (falseValue || new Anonymous);
+    }
+});
+
+},{"../tree/anonymous":48,"../tree/keyword":68,"./function-registry":26}],21:[function(require,module,exports){
 var Color = require("../tree/color"),
     functionRegistry = require("./function-registry");
 
@@ -1449,7 +1731,7 @@ for (var f in colorBlendModeFunctions) {
 
 functionRegistry.addMultiple(colorBlend);
 
-},{"../tree/color":50,"./function-registry":22}],18:[function(require,module,exports){
+},{"../tree/color":53,"./function-registry":26}],22:[function(require,module,exports){
 var Dimension = require("../tree/dimension"),
     Color = require("../tree/color"),
     Quoted = require("../tree/quoted"),
@@ -1730,7 +2012,7 @@ colorFunctions = {
         if (typeof dark === 'undefined') {
             dark = colorFunctions.rgba(0, 0, 0, 1.0);
         }
-        //Figure out which is actually light and dark!
+        // Figure out which is actually light and dark:
         if (dark.luma() > light.luma()) {
             var t = light;
             light = dark;
@@ -1747,6 +2029,44 @@ colorFunctions = {
             return dark;
         }
     },
+    // Changes made in 2.7.0 - Reverted in 3.0.0
+    // contrast: function (color, color1, color2, threshold) {
+    //     // Return which of `color1` and `color2` has the greatest contrast with `color`
+    //     // according to the standard WCAG contrast ratio calculation.
+    //     // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
+    //     // The threshold param is no longer used, in line with SASS.
+    //     // filter: contrast(3.2);
+    //     // should be kept as is, so check for color
+    //     if (!color.rgb) {
+    //         return null;
+    //     }
+    //     if (typeof color1 === 'undefined') {
+    //         color1 = colorFunctions.rgba(0, 0, 0, 1.0);
+    //     }
+    //     if (typeof color2 === 'undefined') {
+    //         color2 = colorFunctions.rgba(255, 255, 255, 1.0);
+    //     }
+    //     var contrast1, contrast2;
+    //     var luma = color.luma();
+    //     var luma1 = color1.luma();
+    //     var luma2 = color2.luma();
+    //     // Calculate contrast ratios for each color
+    //     if (luma > luma1) {
+    //         contrast1 = (luma + 0.05) / (luma1 + 0.05);
+    //     } else {
+    //         contrast1 = (luma1 + 0.05) / (luma + 0.05);
+    //     }
+    //     if (luma > luma2) {
+    //         contrast2 = (luma + 0.05) / (luma2 + 0.05);
+    //     } else {
+    //         contrast2 = (luma2 + 0.05) / (luma + 0.05);
+    //     }
+    //     if (contrast1 > contrast2) {
+    //         return color1;
+    //     } else {
+    //         return color2;
+    //     }
+    // },
     argb: function (color) {
         return new Anonymous(color.toARGB());
     },
@@ -1773,10 +2093,11 @@ colorFunctions = {
 };
 functionRegistry.addMultiple(colorFunctions);
 
-},{"../tree/anonymous":46,"../tree/color":50,"../tree/dimension":56,"../tree/quoted":73,"./function-registry":22}],19:[function(require,module,exports){
+},{"../tree/anonymous":48,"../tree/color":53,"../tree/dimension":60,"../tree/quoted":77,"./function-registry":26}],23:[function(require,module,exports){
 module.exports = function(environment) {
     var Quoted = require("../tree/quoted"),
         URL = require("../tree/url"),
+        utils = require('../utils'),
         functionRegistry = require("./function-registry"),
         fallback = function(functionThis, node) {
             return new URL(node, functionThis.index, functionThis.currentFileInfo).eval(functionThis.context);
@@ -1802,8 +2123,10 @@ module.exports = function(environment) {
             fragment = filePath.slice(fragmentStart);
             filePath = filePath.slice(0, fragmentStart);
         }
+        var context = utils.clone(this.context);
+        context.rawBuffer = true;
 
-        var fileManager = environment.getFileManager(filePath, currentDirectory, this.context, environment, true);
+        var fileManager = environment.getFileManager(filePath, currentDirectory, context, environment, true);
 
         if (!fileManager) {
             return fallback(this, filePathNode);
@@ -1829,7 +2152,7 @@ module.exports = function(environment) {
             useBase64 = /;base64$/.test(mimetype);
         }
 
-        var fileSync = fileManager.loadFileSync(filePath, currentDirectory, this.context, environment);
+        var fileSync = fileManager.loadFileSync(filePath, currentDirectory, context, environment);
         if (!fileSync.contents) {
             logger.warn("Skipped data-uri embedding of " + filePath + " because file not found");
             return fallback(this, filePathNode || mimetypeNode);
@@ -1860,7 +2183,7 @@ module.exports = function(environment) {
     });
 };
 
-},{"../logger":33,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],20:[function(require,module,exports){
+},{"../logger":37,"../tree/quoted":77,"../tree/url":82,"../utils":86,"./function-registry":26}],24:[function(require,module,exports){
 var Keyword = require("../tree/keyword"),
     functionRegistry = require("./function-registry");
 
@@ -1889,7 +2212,7 @@ functionRegistry.add("default", defaultFunc.eval.bind(defaultFunc));
 
 module.exports = defaultFunc;
 
-},{"../tree/keyword":65,"./function-registry":22}],21:[function(require,module,exports){
+},{"../tree/keyword":68,"./function-registry":26}],25:[function(require,module,exports){
 var Expression = require("../tree/expression");
 
 var functionCaller = function(name, context, index, currentFileInfo) {
@@ -1903,8 +2226,8 @@ var functionCaller = function(name, context, index, currentFileInfo) {
 functionCaller.prototype.isValid = function() {
     return Boolean(this.func);
 };
-functionCaller.prototype.call = function(args) {
 
+functionCaller.prototype.call = function(args) {
     // This code is terrible and should be replaced as per this issue...
     // https://github.com/less/less.js/issues/2477
     if (Array.isArray(args)) {
@@ -1937,7 +2260,7 @@ functionCaller.prototype.call = function(args) {
 
 module.exports = functionCaller;
 
-},{"../tree/expression":59}],22:[function(require,module,exports){
+},{"../tree/expression":62}],26:[function(require,module,exports){
 function makeRegistry( base ) {
     return {
         _data: {},
@@ -1947,7 +2270,7 @@ function makeRegistry( base ) {
             name = name.toLowerCase();
 
             if (this._data.hasOwnProperty(name)) {
-                //TODO warn
+                // TODO warn
             }
             this._data[name] = func;
         },
@@ -1960,21 +2283,28 @@ function makeRegistry( base ) {
         get: function(name) {
             return this._data[name] || ( base && base.get( name ));
         },
-        inherit : function() {
+        getLocalFunctions: function() {
+            return this._data;
+        },
+        inherit: function() {
             return makeRegistry( this );
+        },
+        create: function(base) {
+            return makeRegistry(base);
         }
     };
 }
 
 module.exports = makeRegistry( null );
-},{}],23:[function(require,module,exports){
+},{}],27:[function(require,module,exports){
 module.exports = function(environment) {
     var functions = {
         functionRegistry: require("./function-registry"),
         functionCaller: require("./function-caller")
     };
 
-    //register functions
+    // register functions
+    require("./boolean");
     require("./default");
     require("./color");
     require("./color-blending");
@@ -1988,7 +2318,7 @@ module.exports = function(environment) {
     return functions;
 };
 
-},{"./color":18,"./color-blending":17,"./data-uri":19,"./default":20,"./function-caller":21,"./function-registry":22,"./math":25,"./number":26,"./string":27,"./svg":28,"./types":29}],24:[function(require,module,exports){
+},{"./boolean":20,"./color":22,"./color-blending":21,"./data-uri":23,"./default":24,"./function-caller":25,"./function-registry":26,"./math":29,"./number":30,"./string":31,"./svg":32,"./types":33}],28:[function(require,module,exports){
 var Dimension = require("../tree/dimension");
 
 var MathHelper = function() {
@@ -2005,7 +2335,7 @@ MathHelper._math = function (fn, unit, n) {
     return new Dimension(fn(parseFloat(n.value)), unit);
 };
 module.exports = MathHelper;
-},{"../tree/dimension":56}],25:[function(require,module,exports){
+},{"../tree/dimension":60}],29:[function(require,module,exports){
 var functionRegistry = require("./function-registry"),
     mathHelper = require("./math-helper.js");
 
@@ -2036,7 +2366,7 @@ mathFunctions.round = function (n, f) {
 
 functionRegistry.addMultiple(mathFunctions);
 
-},{"./function-registry":22,"./math-helper.js":24}],26:[function(require,module,exports){
+},{"./function-registry":26,"./math-helper.js":28}],30:[function(require,module,exports){
 var Dimension = require("../tree/dimension"),
     Anonymous = require("../tree/anonymous"),
     functionRegistry = require("./function-registry"),
@@ -2044,7 +2374,7 @@ var Dimension = require("../tree/dimension"),
 
 var minMax = function (isMin, args) {
     args = Array.prototype.slice.call(args);
-    switch(args.length) {
+    switch (args.length) {
         case 0: throw { type: "Argument", message: "one or more arguments required" };
     }
     var i, j, current, currentUnified, referenceUnified, unit, unitStatic, unitClone,
@@ -2066,7 +2396,7 @@ var minMax = function (isMin, args) {
         j = values[""] !== undefined && unit !== "" && unit === unitStatic ? values[""] : values[unit];
         if (j === undefined) {
             if (unitStatic !== undefined && unit !== unitStatic) {
-                throw{ type: "Argument", message: "incompatible types" };
+                throw { type: "Argument", message: "incompatible types" };
             }
             values[unit] = order.length;
             order.push(current);
@@ -2119,7 +2449,7 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":46,"../tree/dimension":56,"./function-registry":22,"./math-helper.js":24}],27:[function(require,module,exports){
+},{"../tree/anonymous":48,"../tree/dimension":60,"./function-registry":26,"./math-helper.js":28}],31:[function(require,module,exports){
 var Quoted = require("../tree/quoted"),
     Anonymous = require("../tree/anonymous"),
     JavaScript = require("../tree/javascript"),
@@ -2141,12 +2471,12 @@ functionRegistry.addMultiple({
         result = result.replace(new RegExp(pattern.value, flags ? flags.value : ''), replacement);
         return new Quoted(string.quote || '', result, string.escaped);
     },
-    '%': function (string /* arg, arg, ...*/) {
+    '%': function (string /* arg, arg, ... */) {
         var args = Array.prototype.slice.call(arguments, 1),
             result = string.value;
 
         for (var i = 0; i < args.length; i++) {
-            /*jshint loopfunc:true */
+            /* jshint loopfunc:true */
             result = result.replace(/%[sda]/i, function(token) {
                 var value = ((args[i].type === "Quoted") &&
                     token.match(/s/i)) ? args[i].value : args[i].toCSS();
@@ -2158,7 +2488,7 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":46,"../tree/javascript":63,"../tree/quoted":73,"./function-registry":22}],28:[function(require,module,exports){
+},{"../tree/anonymous":48,"../tree/javascript":66,"../tree/quoted":77,"./function-registry":26}],32:[function(require,module,exports){
 module.exports = function(environment) {
     var Dimension = require("../tree/dimension"),
         Color = require("../tree/color"),
@@ -2176,12 +2506,12 @@ module.exports = function(environment) {
             renderEnv = {compress: false},
             returner,
             directionValue = direction.toCSS(renderEnv),
-			i, color, position, positionValue, alpha;
+            i, color, position, positionValue, alpha;
 
         function throwArgumentDescriptor() {
             throw { type: "Argument",
-					message: "svg-gradient expects direction, start_color [start_position], [color position,]...," +
-							" end_color [end_position] or direction, color list" };
+                message: "svg-gradient expects direction, start_color [start_position], [color position,]...," +
+                            " end_color [end_position] or direction, color list" };
         }
 
         if (arguments.length == 2) {
@@ -2222,7 +2552,7 @@ module.exports = function(environment) {
             '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none">' +
             '<' + gradientType + 'Gradient id="gradient" gradientUnits="userSpaceOnUse" ' + gradientDirectionSvg + '>';
 
-        for (i = 0; i < stops.length; i+= 1) {
+        for (i = 0; i < stops.length; i += 1) {
             if (stops[i] instanceof Expression) {
                 color = stops[i].value[0];
                 position = stops[i].value[1];
@@ -2248,7 +2578,7 @@ module.exports = function(environment) {
     });
 };
 
-},{"../tree/color":50,"../tree/dimension":56,"../tree/expression":59,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],29:[function(require,module,exports){
+},{"../tree/color":53,"../tree/dimension":60,"../tree/expression":62,"../tree/quoted":77,"../tree/url":82,"./function-registry":26}],33:[function(require,module,exports){
 var Keyword = require("../tree/keyword"),
     DetachedRuleset = require("../tree/detached-ruleset"),
     Dimension = require("../tree/dimension"),
@@ -2339,10 +2669,12 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":46,"../tree/color":50,"../tree/detached-ruleset":55,"../tree/dimension":56,"../tree/keyword":65,"../tree/operation":71,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],30:[function(require,module,exports){
+},{"../tree/anonymous":48,"../tree/color":53,"../tree/detached-ruleset":59,"../tree/dimension":60,"../tree/keyword":68,"../tree/operation":74,"../tree/quoted":77,"../tree/url":82,"./function-registry":26}],34:[function(require,module,exports){
 var contexts = require("./contexts"),
     Parser = require('./parser/parser'),
-    FunctionImporter = require('./plugins/function-importer');
+    LessError = require('./less-error'),
+    utils = require('./utils'),
+    PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
 
 module.exports = function(environment) {
 
@@ -2355,7 +2687,8 @@ module.exports = function(environment) {
     //  'entryPath' - absolute path to the entry file
     //  'reference' - whether the file should not be output and only output parts that are referenced
 
-    var ImportManager = function(context, rootFileInfo) {
+    var ImportManager = function(less, context, rootFileInfo) {
+        this.less = less;
         this.rootFilename = rootFileInfo.filename;
         this.paths = context.paths || [];  // Search paths, when importing
         this.contents = {};             // map - filename to contents of all the files
@@ -2367,16 +2700,19 @@ module.exports = function(environment) {
         this.queue = [];        // Files which haven't been imported yet
         this.files = {};        // Holds the imported parse trees.
     };
+    
     /**
      * Add an import to be imported
      * @param path - the raw path
-     * @param tryAppendLessExtension - whether to try appending the less extension (if the path has no extension)
+     * @param tryAppendExtension - whether to try appending a file extension (.less or .js if the path has no extension)
      * @param currentFileInfo - the current file info (used for instance to work out relative paths)
      * @param importOptions - import options
      * @param callback - callback for when it is imported
      */
-    ImportManager.prototype.push = function (path, tryAppendLessExtension, currentFileInfo, importOptions, callback) {
-        var importManager = this;
+    ImportManager.prototype.push = function (path, tryAppendExtension, currentFileInfo, importOptions, callback) {
+        var importManager = this,
+            pluginLoader = this.context.pluginManager.Loader;
+
         this.queue.push(path);
 
         var fileParsedFunc = function (e, root, fullPath) {
@@ -2387,7 +2723,9 @@ module.exports = function(environment) {
                 callback(null, {rules:[]}, false, null);
             }
             else {
-                importManager.files[fullPath] = root;
+                if (!importManager.files[fullPath]) {
+                    importManager.files[fullPath] = { root: root, options: importOptions };
+                } 
                 if (e && !importManager.error) { importManager.error = e; }
                 callback(e, root, importedEqualsRoot, fullPath);
             }
@@ -2407,12 +2745,9 @@ module.exports = function(environment) {
             return;
         }
 
-        if (tryAppendLessExtension) {
-            path = fileManager.tryAppendExtension(path, importOptions.plugin ? ".js" : ".less");
-        }
-
         var loadFileCallback = function(loadedFile) {
-            var resolvedFilename = loadedFile.filename,
+            var plugin,
+                resolvedFilename = loadedFile.filename,
                 contents = loadedFile.contents.replace(/^\uFEFF/, '');
 
             // Pass on an updated rootpath if path of imported file is relative and file
@@ -2444,44 +2779,71 @@ module.exports = function(environment) {
                 newFileInfo.reference = true;
             }
 
-            if (importOptions.plugin) {
-                new FunctionImporter(newEnv, newFileInfo).eval(contents, function (e, root) {
-                    fileParsedFunc(e, root, resolvedFilename);
-                });
+            if (importOptions.isPlugin) {
+                plugin = pluginLoader.evalPlugin(contents, newEnv, importManager, importOptions.pluginArgs, newFileInfo);
+                if (plugin instanceof LessError) {
+                    fileParsedFunc(plugin, null, resolvedFilename);
+                }
+                else {
+                    fileParsedFunc(null, plugin, resolvedFilename);
+                }
             } else if (importOptions.inline) {
                 fileParsedFunc(null, contents, resolvedFilename);
             } else {
-                new Parser(newEnv, importManager, newFileInfo).parse(contents, function (e, root) {
-                    fileParsedFunc(e, root, resolvedFilename);
-                });
+                
+                // import (multiple) parse trees apparently get altered and can't be cached.
+                // TODO: investigate why this is
+                if (importManager.files[resolvedFilename] 
+                    && !importManager.files[resolvedFilename].options.multiple
+                    && !importOptions.multiple) {
+
+                    fileParsedFunc(null, importManager.files[resolvedFilename].root, resolvedFilename);
+                }
+                else {
+                    new Parser(newEnv, importManager, newFileInfo).parse(contents, function (e, root) {
+                        fileParsedFunc(e, root, resolvedFilename);
+                    });
+                }
             }
         };
+        var promise, context = utils.clone(this.context);
 
-        var promise = fileManager.loadFile(path, currentFileInfo.currentDirectory, this.context, environment,
-            function(err, loadedFile) {
-            if (err) {
-                fileParsedFunc(err);
-            } else {
-                loadFileCallback(loadedFile);
-            }
-        });
+        if (tryAppendExtension) {
+            context.ext = importOptions.isPlugin ? ".js" : ".less";
+        }
+
+        if (importOptions.isPlugin) {
+            promise = pluginLoader.loadPlugin(path, currentFileInfo.currentDirectory, context, environment, fileManager);
+        }
+        else {
+            promise = fileManager.loadFile(path, currentFileInfo.currentDirectory, context, environment, 
+                function(err, loadedFile) {
+                    if (err) {
+                        fileParsedFunc(err);
+                    } else {
+                        loadFileCallback(loadedFile);
+                    }
+                });
+        }
         if (promise) {
             promise.then(loadFileCallback, fileParsedFunc);
         }
+
     };
     return ImportManager;
 };
 
-},{"./contexts":11,"./parser/parser":38,"./plugins/function-importer":40}],31:[function(require,module,exports){
+},{"./contexts":12,"./less-error":36,"./parser/parser":42,"./utils":86,"promise":undefined}],35:[function(require,module,exports){
 module.exports = function(environment, fileManagers) {
     var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
 
-    var less = {
-        version: [2, 7, 3],
+    var initial = {
+        version: [3, 0, 0],
         data: require('./data'),
         tree: require('./tree'),
         Environment: (Environment = require("./environment/environment")),
         AbstractFileManager: require("./environment/abstract-file-manager"),
+        AbstractPluginLoader: require("./environment/abstract-plugin-loader"),
         environment: (environment = new Environment(environment, fileManagers)),
         visitors: require('./visitors'),
         Parser: require('./parser/parser'),
@@ -2500,18 +2862,66 @@ module.exports = function(environment, fileManagers) {
         logger: require('./logger')
     };
 
-    return less;
-};
+    // Create a public API
 
-},{"./contexts":11,"./data":13,"./environment/abstract-file-manager":15,"./environment/environment":16,"./functions":23,"./import-manager":30,"./less-error":32,"./logger":33,"./parse":35,"./parse-tree":34,"./parser/parser":38,"./plugin-manager":39,"./render":41,"./source-map-builder":42,"./source-map-output":43,"./transform-tree":44,"./tree":62,"./utils":83,"./visitors":87}],32:[function(require,module,exports){
-var utils = require("./utils");
+    var ctor = function(t) {
+        return function() {
+            var obj = Object.create(t.prototype);
+            t.apply(obj, Array.prototype.slice.call(arguments, 0));
+            return obj;
+        };
+    };
+    var t, api = Object.create(initial);
+    for (var n in initial.tree) {
+        /* eslint guard-for-in: 0 */
+        t = initial.tree[n];
+        if (typeof t === "function") {
+            api[n.toLowerCase()] = ctor(t);
+        }
+        else {
+            api[n] = Object.create(null);
+            for (var o in t) {
+                /* eslint guard-for-in: 0 */
+                api[n][o.toLowerCase()] = ctor(t[o]);
+            }
+        }
+    }
 
-var LessError = module.exports = function LessError(e, importManager, currentFilename) {
+    return api;
+};
 
+},{"./contexts":12,"./data":14,"./environment/abstract-file-manager":17,"./environment/abstract-plugin-loader":18,"./environment/environment":19,"./functions":27,"./import-manager":34,"./less-error":36,"./logger":37,"./parse":39,"./parse-tree":38,"./parser/parser":42,"./plugin-manager":43,"./render":44,"./source-map-builder":45,"./source-map-output":46,"./transform-tree":47,"./tree":65,"./utils":86,"./visitors":90}],36:[function(require,module,exports){
+var utils = require('./utils');
+/**
+ * This is a centralized class of any error that could be thrown internally (mostly by the parser).
+ * Besides standard .message it keeps some additional data like a path to the file where the error
+ * occurred along with line and column numbers.
+ *
+ * @class
+ * @extends Error
+ * @type {module.LessError}
+ *
+ * @prop {string} type
+ * @prop {string} filename
+ * @prop {number} index
+ * @prop {number} line
+ * @prop {number} column
+ * @prop {number} callLine
+ * @prop {number} callExtract
+ * @prop {string[]} extract
+ *
+ * @param {Object} e              - An error object to wrap around or just a descriptive object
+ * @param {Object} importManager  - An instance of ImportManager (see import-manager.js)
+ * @param {string} [currentFilename]
+ */
+var LessError = module.exports = function LessError(e, importManager, currentFilename) {
     Error.call(this);
 
     var filename = e.filename || currentFilename;
 
+    this.message = e.message;
+    this.stack = e.stack;
+
     if (importManager && filename) {
         var input = importManager.contents[filename],
             loc = utils.getLocation(e.index, input),
@@ -2524,17 +2934,32 @@ var LessError = module.exports = function LessError(e, importManager, currentFil
         this.filename = filename;
         this.index = e.index;
         this.line = typeof line === 'number' ? line + 1 : null;
+        this.column = col;
+
+        if (!this.line && this.stack) {
+            var found = this.stack.match(/(<anonymous>|Function):(\d+):(\d+)/);
+
+            if (found) {
+                if (found[2]) {
+                    this.line = parseInt(found[2]) - 2;
+                }
+                if (found[3]) {
+                    this.column = parseInt(found[3]);
+                }
+            }
+        }
+
         this.callLine = callLine + 1;
         this.callExtract = lines[callLine];
-        this.column = col;
+        
         this.extract = [
-            lines[line - 1],
-            lines[line],
-            lines[line + 1]
+            lines[this.line - 2],
+            lines[this.line - 1],
+            lines[this.line]
         ];
+
     }
-    this.message = e.message;
-    this.stack = e.stack;
+
 };
 
 if (typeof Object.create === 'undefined') {
@@ -2547,26 +2972,87 @@ if (typeof Object.create === 'undefined') {
 
 LessError.prototype.constructor = LessError;
 
-},{"./utils":83}],33:[function(require,module,exports){
-module.exports = {
-    error: function(msg) {
-        this._fireEvent("error", msg);
-    },
-    warn: function(msg) {
-        this._fireEvent("warn", msg);
-    },
-    info: function(msg) {
-        this._fireEvent("info", msg);
-    },
-    debug: function(msg) {
-        this._fireEvent("debug", msg);
-    },
-    addListener: function(listener) {
-        this._listeners.push(listener);
-    },
-    removeListener: function(listener) {
-        for (var i = 0; i < this._listeners.length; i++) {
-            if (this._listeners[i] === listener) {
+/**
+ * An overridden version of the default Object.prototype.toString
+ * which uses additional information to create a helpful message.
+ *
+ * @param {Object} options
+ * @returns {string}
+ */
+LessError.prototype.toString = function(options) {
+    options = options || {};
+
+    var message = '';
+    var extract = this.extract || [];
+    var error = [];
+    var stylize = function (str) { return str; };
+    if (options.stylize) {
+        var type = typeof options.stylize;
+        if (type !== 'function') {
+            throw Error('options.stylize should be a function, got a ' + type + '!');
+        }
+        stylize = options.stylize;
+    }
+
+    if (this.line !== null) {
+        if (typeof extract[0] === 'string') {
+            error.push(stylize((this.line - 1) + ' ' + extract[0], 'grey'));
+        }
+
+        if (typeof extract[1] === 'string') {
+            var errorTxt = this.line + ' ';
+            if (extract[1]) {
+                errorTxt += extract[1].slice(0, this.column) +
+                    stylize(stylize(stylize(extract[1].substr(this.column, 1), 'bold') +
+                        extract[1].slice(this.column + 1), 'red'), 'inverse');
+            }
+            error.push(errorTxt);
+        }
+
+        if (typeof extract[2] === 'string') {
+            error.push(stylize((this.line + 1) + ' ' + extract[2], 'grey'));
+        }
+        error = error.join('\n') + stylize('', 'reset') + '\n';
+    }
+
+    message += stylize(this.type + 'Error: ' + this.message, 'red');
+    if (this.filename) {
+        message += stylize(' in ', 'red') + this.filename;
+    }
+    if (this.line) {
+        message += stylize(' on line ' + this.line + ', column ' + (this.column + 1) + ':', 'grey');
+    }
+
+    message += '\n' + error;
+
+    if (this.callLine) {
+        message += stylize('from ', 'red') + (this.filename || '') + '/n';
+        message += stylize(this.callLine, 'grey') + ' ' + this.callExtract + '/n';
+    }
+
+    return message;
+};
+
+},{"./utils":86}],37:[function(require,module,exports){
+module.exports = {
+    error: function(msg) {
+        this._fireEvent("error", msg);
+    },
+    warn: function(msg) {
+        this._fireEvent("warn", msg);
+    },
+    info: function(msg) {
+        this._fireEvent("info", msg);
+    },
+    debug: function(msg) {
+        this._fireEvent("debug", msg);
+    },
+    addListener: function(listener) {
+        this._listeners.push(listener);
+    },
+    removeListener: function(listener) {
+        for (var i = 0; i < this._listeners.length; i++) {
+            if (this._listeners[i] === listener) {
                 this._listeners.splice(i, 1);
                 return;
             }
@@ -2583,7 +3069,7 @@ module.exports = {
     _listeners: []
 };
 
-},{}],34:[function(require,module,exports){
+},{}],38:[function(require,module,exports){
 var LessError = require('./less-error'),
     transformTree = require("./transform-tree"),
     logger = require("./logger");
@@ -2645,19 +3131,23 @@ module.exports = function(SourceMapBuilder) {
     return ParseTree;
 };
 
-},{"./less-error":32,"./logger":33,"./transform-tree":44}],35:[function(require,module,exports){
+},{"./less-error":36,"./logger":37,"./transform-tree":47}],39:[function(require,module,exports){
 var PromiseConstructor,
     contexts = require("./contexts"),
     Parser = require('./parser/parser'),
-    PluginManager = require('./plugin-manager');
+    PluginManager = require('./plugin-manager'),
+    LessError = require('./less-error'),
+    utils = require('./utils');
 
 module.exports = function(environment, ParseTree, ImportManager) {
     var parse = function (input, options, callback) {
-        options = options || {};
 
         if (typeof options === 'function') {
             callback = options;
-            options = {};
+            options = utils.defaults(this.options, {});
+        }
+        else {
+            options = utils.defaults(this.options, options || {});
         }
 
         if (!callback) {
@@ -2677,9 +3167,8 @@ module.exports = function(environment, ParseTree, ImportManager) {
         } else {
             var context,
                 rootFileInfo,
-                pluginManager = new PluginManager(this);
+                pluginManager = new PluginManager(this, true);
 
-            pluginManager.addPlugins(options.plugins);
             options.pluginManager = pluginManager;
 
             context = new contexts.Parse(options);
@@ -2703,19 +3192,39 @@ module.exports = function(environment, ParseTree, ImportManager) {
                 }
             }
 
-            var imports = new ImportManager(context, rootFileInfo);
+            var imports = new ImportManager(this, context, rootFileInfo);
+            this.importManager = imports;
 
+            // TODO: allow the plugins to be just a list of paths or names
+            // Do an async plugin queue like lessc
+
+            if (options.plugins) {
+                options.plugins.forEach(function(plugin) {
+                    var evalResult, contents;
+                    if (plugin.fileContent) {
+                        contents = plugin.fileContent.replace(/^\uFEFF/, '');
+                        evalResult = pluginManager.Loader.evalPlugin(contents, context, imports, plugin.options, plugin.filename);
+                        if (evalResult instanceof LessError) {
+                            return callback(evalResult);
+                        }
+                    }
+                    else {
+                        pluginManager.addPlugin(plugin);
+                    }
+                });
+            }
+            
             new Parser(context, imports, rootFileInfo)
                 .parse(input, function (e, root) {
-                if (e) { return callback(e); }
-                callback(null, root, imports, options);
-            }, options);
+                    if (e) { return callback(e); }
+                    callback(null, root, imports, options);
+                }, options);
         }
     };
     return parse;
 };
 
-},{"./contexts":11,"./parser/parser":38,"./plugin-manager":39,"promise":undefined}],36:[function(require,module,exports){
+},{"./contexts":12,"./less-error":36,"./parser/parser":42,"./plugin-manager":43,"./utils":86,"promise":undefined}],40:[function(require,module,exports){
 // Split the input into chunks.
 module.exports = function (input, fail) {
     var len = input.length, level = 0, parenLevel = 0,
@@ -2829,15 +3338,15 @@ module.exports = function (input, fail) {
     return chunks;
 };
 
-},{}],37:[function(require,module,exports){
+},{}],41:[function(require,module,exports){
 var chunker = require('./chunker');
 
 module.exports = function() {
-    var input,       // LeSS input string
+    var input,       // Less input string
         j,           // current chunk
         saveStack = [],   // holds state for backtracking
         furthest,    // furthest index the parser has gone to
-        furthestPossibleErrorMessage,// if this is furthest we got to, this is the probably cause
+        furthestPossibleErrorMessage, // if this is furthest we got to, this is the probably cause
         chunks,      // chunkified input
         current,     // current chunk
         currentPos,  // index of current chunk, in `input`
@@ -2988,7 +3497,7 @@ module.exports = function() {
 
         for (var i = 1; i + currentPosition < length; i++) {
             var nextChar = input.charAt(i + currentPosition);
-            switch(nextChar) {
+            switch (nextChar) {
                 case "\\":
                     i++;
                     continue;
@@ -3041,7 +3550,7 @@ module.exports = function() {
 
     parserInput.peekNotNumeric = function() {
         var c = input.charCodeAt(parserInput.i);
-        //Is the first char of the dimension 0-9, '.', '+' or '-'
+        // Is the first char of the dimension 0-9, '.', '+' or '-'
         return (c > CHARCODE_9 || c < CHARCODE_PLUS) || c === CHARCODE_FORWARD_SLASH || c === CHARCODE_COMMA;
     };
 
@@ -3090,12 +3599,13 @@ module.exports = function() {
     return parserInput;
 };
 
-},{"./chunker":36}],38:[function(require,module,exports){
+},{"./chunker":40}],42:[function(require,module,exports){
 var LessError = require('../less-error'),
     tree = require("../tree"),
     visitors = require("../visitors"),
     getParserInput = require("./parser-input"),
-    utils = require("../utils");
+    utils = require("../utils"),
+    functionRegistry = require('../functions/function-registry');
 
 //
 // less.js - parser
@@ -3128,8 +3638,8 @@ var LessError = require('../less-error'),
 //    Token matching is done with the `$` function, which either takes
 //    a terminal string or regexp, or a non-terminal function to call.
 //    It also takes care of moving all the indices forwards.
-//`
 //
+
 var Parser = function Parser(context, imports, fileInfo) {
     var parsers,
         parserInput = getParserInput();
@@ -3173,11 +3683,61 @@ var Parser = function Parser(context, imports, fileInfo) {
         };
     }
 
+    /**
+     *  Used after initial parsing to create nodes on the fly
+     * 
+     *  @param {String} str          - string to parse 
+     *  @param {Array}  parseList    - array of parsers to run input through e.g. ["value", "important"]
+     *  @param {Number} currentIndex - start number to begin indexing
+     *  @param {Object} fileInfo     - fileInfo to attach to created nodes
+     */
+    function parseNode(str, parseList, currentIndex, fileInfo, callback) {
+        var result, returnNodes = [];
+        var parser = parserInput;
+
+        try {
+            parser.start(str, false, function fail(msg, index) {
+                callback({
+                    message: msg,
+                    index: index + currentIndex
+                });
+            });
+            for (var x = 0, p, i; (p = parseList[x]); x++) {
+                i = parser.i;
+                result = parsers[p]();
+                if (result) {
+                    result._index = i + currentIndex;
+                    result._fileInfo = fileInfo;
+                    returnNodes.push(result);
+                }
+                else {
+                    returnNodes.push(null);
+                }
+            }
+
+            var endInfo = parser.end();
+            if (endInfo.isFinished) {
+                callback(null, returnNodes);
+            }
+            else {
+                callback(true, null);
+            }
+        } catch (e) {
+            throw new LessError({
+                index: e.index + currentIndex,
+                message: e.message
+            }, imports, fileInfo.filename);
+        }
+    }
+    
     //
     // The Parser
     //
     return {
-
+        parserInput: parserInput,
+        imports: imports,
+        fileInfo: fileInfo,
+        parseNode: parseNode,
         //
         // Parse an input string into an abstract syntax tree,
         // @param str A string containing 'less' markup
@@ -3223,9 +3783,13 @@ var Parser = function Parser(context, imports, fileInfo) {
                     }, imports);
                 });
 
-                root = new(tree.Ruleset)(null, this.parsers.primary());
+                tree.Node.prototype.parse = this;
+                root = new tree.Ruleset(null, this.parsers.primary());
+                tree.Node.prototype.rootNode = root;
                 root.root = true;
                 root.firstRoot = true;
+                root.functionRegistry = functionRegistry.inherit();
+                
             } catch (e) {
                 return callback(new LessError(e, imports, fileInfo.filename));
             }
@@ -3290,7 +3854,7 @@ var Parser = function Parser(context, imports, fileInfo) {
         //
         // The basic structure of the syntax tree generated is as follows:
         //
-        //   Ruleset ->  Rule -> Value -> Expression -> Entity
+        //   Ruleset ->  Declaration -> Value -> Expression -> Entity
         //
         // Here's some Less code:
         //
@@ -3304,9 +3868,9 @@ var Parser = function Parser(context, imports, fileInfo) {
         // And here's what the parse tree might look like:
         //
         //     Ruleset (Selector '.class', [
-        //         Rule ("color",  Value ([Expression [Color #fff]]))
-        //         Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
-        //         Rule ("width",  Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
+        //         Declaration ("color",  Value ([Expression [Color #fff]]))
+        //         Declaration ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
+        //         Declaration ("width",  Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
         //         Ruleset (Selector [Element '>', '.child'], [...])
         //     ])
         //
@@ -3323,7 +3887,7 @@ var Parser = function Parser(context, imports, fileInfo) {
             // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
             // as represented by this simplified grammar:
             //
-            //     primary  →  (ruleset | rule)+
+            //     primary  →  (ruleset | declaration)+
             //     ruleset  →  selector+ block
             //     block    →  '{' primary '}'
             //
@@ -3353,8 +3917,8 @@ var Parser = function Parser(context, imports, fileInfo) {
                         continue;
                     }
 
-                    node = mixin.definition() || this.rule() || this.ruleset() ||
-                        mixin.call() || this.rulesetCall() || this.entities.call() || this.directive();
+                    node = mixin.definition() || this.declaration() || this.ruleset() ||
+                        mixin.call() || this.variableCall() || this.entities.call() || this.atrule();
                     if (node) {
                         root.push(node);
                     } else {
@@ -3412,7 +3976,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                 //     black border-collapse
                 //
                 keyword: function () {
-                    var k = parserInput.$char("%") || parserInput.$re(/^[_A-Za-z-][_A-Za-z0-9-]*/);
+                    var k = parserInput.$char("%") || parserInput.$re(/^\[?[_A-Za-z-][_A-Za-z0-9-]*\]?/);
                     if (k) {
                         return tree.Color.fromKeyword(k) || new(tree.Keyword)(k);
                     }
@@ -3423,13 +3987,10 @@ var Parser = function Parser(context, imports, fileInfo) {
                 //
                 //     rgb(255, 0, 255)
                 //
-                // We also try to catch IE's `alpha()`, but let the `alpha` parser
-                // deal with the details.
-                //
                 // The arguments are parsed with the `entities.arguments` parser.
                 //
                 call: function () {
-                    var name, nameLC, args, alpha, index = parserInput.i;
+                    var name, args, func, index = parserInput.i;
 
                     // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
                     if (parserInput.peek(/^url\(/i)) {
@@ -3439,70 +4000,98 @@ var Parser = function Parser(context, imports, fileInfo) {
                     parserInput.save();
 
                     name = parserInput.$re(/^([\w-]+|%|progid:[\w\.]+)\(/);
-                    if (!name) { parserInput.forget(); return; }
+                    if (!name) {
+                        parserInput.forget(); 
+                        return;
+                    }
 
                     name = name[1];
-                    nameLC = name.toLowerCase();
-
-                    if (nameLC === 'alpha') {
-                        alpha = parsers.alpha();
-                        if (alpha) {
+                    func = this.customFuncCall(name);
+                    if (func) {
+                        args = func.parse();
+                        if (args && func.stop) {
                             parserInput.forget();
-                            return alpha;
+                            return args;
                         }
                     }
 
-                    args = this.arguments();
+                    args = this.arguments(args);
 
-                    if (! parserInput.$char(')')) {
+                    if (!parserInput.$char(')')) {
                         parserInput.restore("Could not parse call arguments or missing ')'");
                         return;
                     }
 
                     parserInput.forget();
+                    
                     return new(tree.Call)(name, args, index, fileInfo);
                 },
-                arguments: function () {
-                    var argsSemiColon = [], argsComma = [],
-                        expressions = [],
-                        isSemiColonSeparated, value, arg;
-
-                    parserInput.save();
+                
+                //
+                // Parsing rules for functions with non-standard args, e.g.:
+                //
+                //     boolean(not(2 > 1))
+                //
+                //     This is a quick prototype, to be modified/improved when
+                //     more custom-parsed funcs come (e.g. `selector(...)`)
+                //
 
-                    while (true) {
+                customFuncCall: function (name) {
+                    /* Ideally the table is to be moved out of here for faster perf.,
+                       but it's quite tricky since it relies on all these `parsers`
+                       and `expect` available only here */
+                    return {
+                        alpha:   f(parsers.ieAlpha, true),
+                        boolean: f(condition),
+                        'if':    f(condition)
+                    }[name.toLowerCase()];
+
+                    function f(parse, stop) {
+                        return {
+                            parse: parse, // parsing function
+                            stop:  stop   // when true - stop after parse() and return its result, 
+                                          // otherwise continue for plain args
+                        };
+                    }
+                
+                    function condition() {
+                        return [expect(parsers.condition, 'expected condition')];
+                    }
+                },
 
-                        arg = parsers.detachedRuleset() || this.assignment() || parsers.expression();
+                arguments: function (prevArgs) {
+                    var argsComma = prevArgs || [],
+                        argsSemiColon = [],
+                        isSemiColonSeparated, value;
 
-                        if (!arg) {
-                            break;
-                        }
+                    parserInput.save();
 
-                        value = arg;
+                    while (true) {
+                        if (prevArgs) {
+                            prevArgs = false;
+                        } else {
+                            value = parsers.detachedRuleset() || this.assignment() || parsers.expression();
+                            if (!value) {
+                                break;
+                            }
 
-                        if (arg.value && arg.value.length == 1) {
-                            value = arg.value[0];
-                        }
+                            if (value.value && value.value.length == 1) {
+                                value = value.value[0];
+                            }
 
-                        if (value) {
-                            expressions.push(value);
+                            argsComma.push(value);
                         }
 
-                        argsComma.push(value);
-
                         if (parserInput.$char(',')) {
                             continue;
                         }
 
                         if (parserInput.$char(';') || isSemiColonSeparated) {
-
                             isSemiColonSeparated = true;
-
-                            if (expressions.length > 1) {
-                                value = new(tree.Value)(expressions);
-                            }
+                            value = (argsComma.length < 1) ? argsComma[0]
+                                : new tree.Value(argsComma);
                             argsSemiColon.push(value);
-
-                            expressions = [];
+                            argsComma = [];
                         }
                     }
 
@@ -3560,15 +4149,17 @@ var Parser = function Parser(context, imports, fileInfo) {
                         return;
                     }
 
-                    value = this.quoted() || this.variable() ||
+                    value = this.quoted() || this.variable() || this.property() ||
                             parserInput.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/) || "";
 
                     parserInput.autoCommentAbsorb = true;
 
                     expectChar(')');
 
-                    return new(tree.URL)((value.value != null || value instanceof tree.Variable) ?
-                                        value : new(tree.Anonymous)(value), index, fileInfo);
+                    return new(tree.URL)((value.value != null || 
+                        value instanceof tree.Variable || 
+                        value instanceof tree.Property) ?
+                        value : new(tree.Anonymous)(value, index), index, fileInfo);
                 },
 
                 //
@@ -3595,7 +4186,27 @@ var Parser = function Parser(context, imports, fileInfo) {
                         return new(tree.Variable)("@" + curly[1], index, fileInfo);
                     }
                 },
+                //
+                // A Property accessor, such as `$color`, in
+                //
+                //     background-color: $color
+                //
+                property: function () {
+                    var name, index = parserInput.i;
+
+                    if (parserInput.currentChar() === '$' && (name = parserInput.$re(/^\$[\w-]+/))) {
+                        return new(tree.Property)(name, index, fileInfo);
+                    }
+                },
+
+                // A property entity useing the protective {} e.g. ${prop}
+                propertyCurly: function () {
+                    var curly, index = parserInput.i;
 
+                    if (parserInput.currentChar() === '$' && (curly = parserInput.$re(/^\$\{([\w-]+)\}/))) {
+                        return new(tree.Property)("$" + curly[1], index, fileInfo);
+                    }
+                },
                 //
                 // A Hexadecimal color
                 //
@@ -3705,15 +4316,17 @@ var Parser = function Parser(context, imports, fileInfo) {
             },
 
             //
-            // The variable part of a variable definition. Used in the `rule` parser
+            // Call a variable value
             //
-            //     @fink();
+            //     @fink()
             //
-            rulesetCall: function () {
+            variableCall: function () {
                 var name;
 
-                if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^(@[\w-]+)\(\s*\)\s*;/))) {
-                    return new tree.RulesetCall(name[1]);
+                if (parserInput.currentChar() === '@'
+                    && (name = parserInput.$re(/^(@[\w-]+)\(\s*\)/))
+                    && parsers.end()) {
+                    return new tree.VariableCall(name[1]);
                 }
             },
 
@@ -3730,7 +4343,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                 do {
                     option = null;
                     elements = null;
-                    while (! (option = parserInput.$re(/^(all)(?=\s*(\)|,))/))) {
+                    while (!(option = parserInput.$re(/^(all)(?=\s*(\)|,))/))) {
                         e = this.element();
                         if (!e) {
                             break;
@@ -3849,7 +4462,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                                     .push({ variadic: true });
                                 break;
                             }
-                            arg = entities.variable() || entities.literal() || entities.keyword();
+                            arg = entities.variable() || entities.property() || entities.literal() || entities.keyword();
                         }
 
                         if (!arg) {
@@ -3872,7 +4485,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                             val = arg;
                         }
 
-                        if (val && val instanceof tree.Variable) {
+                        if (val && (val instanceof tree.Variable || val instanceof tree.Property)) {
                             if (parserInput.$char(':')) {
                                 if (expressions.length > 0) {
                                     if (isSemiColonSeparated) {
@@ -4018,11 +4631,11 @@ var Parser = function Parser(context, imports, fileInfo) {
                 var entities = this.entities;
 
                 return this.comment() || entities.literal() || entities.variable() || entities.url() ||
-                       entities.call()    || entities.keyword()  || entities.javascript();
+                       entities.property() || entities.call() || entities.keyword()  || entities.javascript();
             },
 
             //
-            // A Rule terminator. Note that we use `peek()` to check for '}',
+            // A Declaration terminator. Note that we use `peek()` to check for '}',
             // because the `block` rule will be expecting it, but we still need to make sure
             // it's there, if ';' was omitted.
             //
@@ -4035,17 +4648,18 @@ var Parser = function Parser(context, imports, fileInfo) {
             //
             //     alpha(opacity=88)
             //
-            alpha: function () {
+            ieAlpha: function () {
                 var value;
 
                 // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
-                if (! parserInput.$re(/^opacity=/i)) { return; }
+                if (!parserInput.$re(/^opacity=/i)) { return; }
                 value = parserInput.$re(/^\d+/);
                 if (!value) {
-                    value = expect(this.entities.variable, "Could not parse alpha");
+                    value = expect(parsers.entities.variable, "Could not parse alpha");
+                    value = '@{' + value.name.slice(1) + '}';
                 }
                 expectChar(')');
-                return new(tree.Alpha)(value);
+                return new tree.Quoted('', 'alpha(opacity=' + value + ')');
             },
 
             //
@@ -4071,10 +4685,10 @@ var Parser = function Parser(context, imports, fileInfo) {
                     parserInput.$re(/^\([^&()@]+\)/) ||  parserInput.$re(/^[\.#:](?=@)/) ||
                     this.entities.variableCurly();
 
-                if (! e) {
+                if (!e) {
                     parserInput.save();
                     if (parserInput.$char('(')) {
-                        if ((v = this.selector()) && parserInput.$char(')')) {
+                        if ((v = this.selector(false)) && parserInput.$char(')')) {
                             e = new(tree.Paren)(v);
                             parserInput.forget();
                         } else {
@@ -4125,14 +4739,8 @@ var Parser = function Parser(context, imports, fileInfo) {
                 }
             },
             //
-            // A CSS selector (see selector below)
-            // with less extensions e.g. the ability to extend and guard
-            //
-            lessSelector: function () {
-                return this.selector(true);
-            },
-            //
             // A CSS Selector
+            // with less extensions e.g. the ability to extend and guard
             //
             //     .class > div + h1
             //     li a:hover
@@ -4141,7 +4749,7 @@ var Parser = function Parser(context, imports, fileInfo) {
             //
             selector: function (isLess) {
                 var index = parserInput.i, elements, extendList, c, e, allExtends, when, condition;
-
+                isLess = isLess !== false;
                 while ((isLess && (extendList = this.extend())) || (isLess && (when = parserInput.$str("when"))) || (e = this.element())) {
                     if (when) {
                         condition = expect(this.conditions, 'expected condition');
@@ -4172,7 +4780,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                 if (allExtends) { error("Extend must be used to extend a selector, it cannot be used on its own"); }
             },
             attribute: function () {
-                if (! parserInput.$char('[')) { return; }
+                if (!parserInput.$char('[')) { return; }
 
                 var entities = this.entities,
                     key, val, op;
@@ -4231,7 +4839,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                 }
 
                 while (true) {
-                    s = this.lessSelector();
+                    s = this.selector();
                     if (!s) {
                         break;
                     }
@@ -4244,7 +4852,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                     if (s.condition && selectors.length > 1) {
                         error("Guards are only currently allowed on a single selector.");
                     }
-                    if (! parserInput.$char(',')) { break; }
+                    if (!parserInput.$char(',')) { break; }
                     if (s.condition) {
                         error("Guards are only currently allowed on a single selector.");
                     }
@@ -4262,7 +4870,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                     parserInput.restore();
                 }
             },
-            rule: function (tryAnonymous) {
+            declaration: function () {
                 var name, value, startOfRule = parserInput.i, c = parserInput.currentChar(), important, merge, isVariable;
 
                 if (c === '.' || c === '#' || c === '&' || c === ':') { return; }
@@ -4284,22 +4892,16 @@ var Parser = function Parser(context, imports, fileInfo) {
                         // where each item is a tree.Keyword or tree.Variable
                         merge = !isVariable && name.length > 1 && name.pop().value;
 
-                        // prefer to try to parse first if its a variable or we are compressing
-                        // but always fallback on the other one
-                        var tryValueFirst = !tryAnonymous && (context.compress || isVariable);
-
-                        if (tryValueFirst) {
-                            value = this.value();
+                        // Try to store values as anonymous
+                        // If we need the value later we'll re-parse it in ruleset.parseValue
+                        value = this.anonymousValue();
+                        if (value) {
+                            parserInput.forget();
+                            // anonymous values absorb the end ';' which is required for them to work
+                            return new (tree.Declaration)(name, value, false, merge, startOfRule, fileInfo);
                         }
+
                         if (!value) {
-                            value = this.anonymousValue();
-                            if (value) {
-                                parserInput.forget();
-                                // anonymous values absorb the end ';' which is required for them to work
-                                return new (tree.Rule)(name, value, false, merge, startOfRule, fileInfo);
-                            }
-                        }
-                        if (!tryValueFirst && !value) {
                             value = this.value();
                         }
 
@@ -4308,26 +4910,25 @@ var Parser = function Parser(context, imports, fileInfo) {
 
                     if (value && this.end()) {
                         parserInput.forget();
-                        return new (tree.Rule)(name, value, important, merge, startOfRule, fileInfo);
-                    } else {
+                        return new (tree.Declaration)(name, value, important, merge, startOfRule, fileInfo);
+                    }
+                    else {
                         parserInput.restore();
-                        if (value && !tryAnonymous) {
-                            return this.rule(true);
-                        }
                     }
                 } else {
-                    parserInput.forget();
+                    parserInput.restore();
                 }
             },
             anonymousValue: function () {
-                var match = parserInput.$re(/^([^@+\/'"*`(;{}-]*);/);
+                var index = parserInput.i;
+                var match = parserInput.$re(/^([^@\$+\/'"*`(;{}-]*);/);
                 if (match) {
-                    return new(tree.Anonymous)(match[1]);
+                    return new(tree.Anonymous)(match[1], index);
                 }
             },
 
             //
-            // An @import directive
+            // An @import atrule
             //
             //     @import "lib";
             //
@@ -4365,13 +4966,13 @@ var Parser = function Parser(context, imports, fileInfo) {
                 var o, options = {}, optionName, value;
 
                 // list of options, surrounded by parens
-                if (! parserInput.$char('(')) { return null; }
+                if (!parserInput.$char('(')) { return null; }
                 do {
                     o = this.importOption();
                     if (o) {
                         optionName = o;
                         value = true;
-                        switch(optionName) {
+                        switch (optionName) {
                             case "css":
                                 optionName = "less";
                                 value = false;
@@ -4382,7 +4983,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                                 break;
                         }
                         options[optionName] = value;
-                        if (! parserInput.$char(',')) { break; }
+                        if (!parserInput.$char(',')) { break; }
                     }
                 } while (o);
                 expectChar(')');
@@ -4408,7 +5009,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                         e = this.value();
                         if (parserInput.$char(')')) {
                             if (p && e) {
-                                nodes.push(new(tree.Paren)(new(tree.Rule)(p, e, null, null, parserInput.i, fileInfo, true)));
+                                nodes.push(new(tree.Paren)(new(tree.Declaration)(p, e, null, null, parserInput.i, fileInfo, true)));
                             } else if (e) {
                                 nodes.push(new(tree.Paren)(e));
                             } else {
@@ -4432,12 +5033,12 @@ var Parser = function Parser(context, imports, fileInfo) {
                     e = this.mediaFeature();
                     if (e) {
                         features.push(e);
-                        if (! parserInput.$char(',')) { break; }
+                        if (!parserInput.$char(',')) { break; }
                     } else {
                         e = entities.variable();
                         if (e) {
                             features.push(e);
-                            if (! parserInput.$char(',')) { break; }
+                            if (!parserInput.$char(',')) { break; }
                         }
                     }
                 } while (e);
@@ -4477,45 +5078,68 @@ var Parser = function Parser(context, imports, fileInfo) {
             },
 
             //
-            // A @plugin directive, used to import compiler extensions dynamically.
-            //
-            //     @plugin "lib";
+
+            // A @plugin directive, used to import plugins dynamically.
             //
-            // Depending on our environment, importing is done differently:
-            // In the browser, it's an XHR request, in Node, it would be a
-            // file-system operation. The function used for importing is
-            // stored in `import`, which we pass to the Import constructor.
+            //     @plugin (args) "lib";
             //
             plugin: function () {
-                var path,
+                var path, args, options,
                     index = parserInput.i,
                     dir   = parserInput.$re(/^@plugin?\s+/);
 
                 if (dir) {
-                    var options = { plugin : true };
+                    args = this.pluginArgs();
+
+                    if (args) {
+                        options = {
+                            pluginArgs: args,
+                            isPlugin: true
+                        };
+                    }
+                    else {
+                        options = { isPlugin: true };
+                    }
 
                     if ((path = this.entities.quoted() || this.entities.url())) {
 
                         if (!parserInput.$char(';')) {
                             parserInput.i = index;
-                            error("missing semi-colon on plugin");
+                            error("missing semi-colon on @plugin");
                         }
-
                         return new(tree.Import)(path, null, options, index, fileInfo);
                     }
                     else {
                         parserInput.i = index;
-                        error("malformed plugin statement");
+                        error("malformed @plugin statement");
                     }
                 }
             },
 
+            pluginArgs: function() {
+                // list of options, surrounded by parens
+                parserInput.save();
+                if (!parserInput.$char('(')) {
+                    parserInput.restore();
+                    return null;
+                }
+                var args = parserInput.$re(/^\s*([^\);]+)\)\s*/);
+                if (args[1]) {
+                    parserInput.forget();
+                    return args[1].trim();
+                }
+                else { 
+                    parserInput.restore();
+                    return null;
+                }
+            },
+
             //
-            // A CSS Directive
+            // A CSS AtRule
             //
             //     @charset "utf-8";
             //
-            directive: function () {
+            atrule: function () {
                 var index = parserInput.i, name, value, rules, nonVendorSpecificName,
                     hasIdentifier, hasExpression, hasUnknown, hasBlock = true, isRooted = true;
 
@@ -4537,7 +5161,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                     nonVendorSpecificName = "@" + name.slice(name.indexOf('-', 2) + 1);
                 }
 
-                switch(nonVendorSpecificName) {
+                switch (nonVendorSpecificName) {
                     case "@charset":
                         hasIdentifier = true;
                         hasBlock = false;
@@ -4586,13 +5210,13 @@ var Parser = function Parser(context, imports, fileInfo) {
 
                 if (rules || (!hasBlock && value && parserInput.$char(';'))) {
                     parserInput.forget();
-                    return new (tree.Directive)(name, value, rules, index, fileInfo,
+                    return new (tree.AtRule)(name, value, rules, index, fileInfo,
                         context.dumpLineNumbers ? getDebugInfo(index) : null,
                         isRooted
                     );
                 }
 
-                parserInput.restore("directive options not recognised");
+                parserInput.restore("at-rule options not recognised");
             },
 
             //
@@ -4604,18 +5228,18 @@ var Parser = function Parser(context, imports, fileInfo) {
             // and before the `;`.
             //
             value: function () {
-                var e, expressions = [];
+                var e, expressions = [], index = parserInput.i;
 
                 do {
                     e = this.expression();
                     if (e) {
                         expressions.push(e);
-                        if (! parserInput.$char(',')) { break; }
+                        if (!parserInput.$char(',')) { break; }
                     }
                 } while (e);
 
                 if (expressions.length > 0) {
-                    return new(tree.Value)(expressions);
+                    return new(tree.Value)(expressions, index);
                 }
             },
             important: function () {
@@ -4854,13 +5478,14 @@ var Parser = function Parser(context, imports, fileInfo) {
             operand: function () {
                 var entities = this.entities, negate;
 
-                if (parserInput.peek(/^-[@\(]/)) {
+                if (parserInput.peek(/^-[@\$\(]/)) {
                     negate = parserInput.$char('-');
                 }
 
                 var o = this.sub() || entities.dimension() ||
                         entities.color() || entities.variable() ||
-                        entities.call() || entities.colorKeyword();
+                        entities.property() || entities.call() ||
+                        entities.colorKeyword();
 
                 if (negate) {
                     o.parensInOp = true;
@@ -4878,7 +5503,7 @@ var Parser = function Parser(context, imports, fileInfo) {
             //     @var * 2
             //
             expression: function () {
-                var entities = [], e, delim;
+                var entities = [], e, delim, index = parserInput.i;
 
                 do {
                     e = this.comment();
@@ -4893,7 +5518,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                         if (!parserInput.peek(/^\/[\/*]/)) {
                             delim = parserInput.$char('/');
                             if (delim) {
-                                entities.push(new(tree.Anonymous)(delim));
+                                entities.push(new(tree.Anonymous)(delim, index));
                             }
                         }
                     }
@@ -4931,7 +5556,7 @@ var Parser = function Parser(context, imports, fileInfo) {
 
                 match(/^(\*?)/);
                 while (true) {
-                    if (!match(/^((?:[\w-]+)|(?:@\{[\w-]+\}))/)) {
+                    if (!match(/^((?:[\w-]+)|(?:[@\$]\{[\w-]+\}))/)) {
                         break;
                     }
                 }
@@ -4947,10 +5572,11 @@ var Parser = function Parser(context, imports, fileInfo) {
                     }
                     for (k = 0; k < name.length; k++) {
                         s = name[k];
-                        name[k] = (s.charAt(0) !== '@') ?
+                        name[k] = (s.charAt(0) !== '@' && s.charAt(0) !== '$') ?
                             new(tree.Keyword)(s) :
-                            new(tree.Variable)('@' + s.slice(2, -1),
-                                index[k], fileInfo);
+                            (s.charAt(0) === '@' ?
+                                new(tree.Variable)('@' + s.slice(2, -1), index[k], fileInfo) :
+                                new(tree.Property)('$' + s.slice(2, -1), index[k], fileInfo));
                     }
                     return name;
                 }
@@ -4975,7 +5601,7 @@ Parser.serializeVars = function(vars) {
 
 module.exports = Parser;
 
-},{"../less-error":32,"../tree":62,"../utils":83,"../visitors":87,"./parser-input":37}],39:[function(require,module,exports){
+},{"../functions/function-registry":26,"../less-error":36,"../tree":65,"../utils":86,"../visitors":90,"./parser-input":41}],43:[function(require,module,exports){
 /**
  * Plugin Manager
  */
@@ -4986,7 +5612,18 @@ var PluginManager = function(less) {
     this.postProcessors = [];
     this.installedPlugins = [];
     this.fileManagers = [];
+    this.iterator = -1;
+    this.pluginCache = {};
+    this.Loader = new less.PluginLoader(less);
 };
+
+var pm, PluginManagerFactory = function(less, newFactory) {
+        if (newFactory || !pm) {
+            pm = new PluginManager(less);
+        }
+        return pm;
+    };
+
 /**
  * Adds all the plugins in the array
  * @param {Array} plugins
@@ -5001,11 +5638,25 @@ PluginManager.prototype.addPlugins = function(plugins) {
 /**
  *
  * @param plugin
+ * @param {String} filename
  */
-PluginManager.prototype.addPlugin = function(plugin) {
+PluginManager.prototype.addPlugin = function(plugin, filename, functionRegistry) {
     this.installedPlugins.push(plugin);
-    plugin.install(this.less, this);
+    if (filename) {
+        this.pluginCache[filename] = plugin;
+    }
+    if (plugin.install) {
+        plugin.install(this.less, this, functionRegistry || this.less.functions.functionRegistry);
+    }
+};
+/**
+ *
+ * @param filename
+ */
+PluginManager.prototype.get = function(filename) {
+    return this.pluginCache[filename];
 };
+
 /**
  * Adds a visitor. The visitor object has options on itself to determine
  * when it should run.
@@ -5081,6 +5732,20 @@ PluginManager.prototype.getPostProcessors = function() {
 PluginManager.prototype.getVisitors = function() {
     return this.visitors;
 };
+
+PluginManager.prototype.visitor = function() {
+    var self = this;
+    return {
+        first: function() {
+            self.iterator = -1;
+            return self.visitors[self.iterator];
+        },
+        get: function() {
+            self.iterator += 1;
+            return self.visitors[self.iterator];
+        }
+    };
+};
 /**
  *
  * @returns {Array}
@@ -5089,53 +5754,22 @@ PluginManager.prototype.getVisitors = function() {
 PluginManager.prototype.getFileManagers = function() {
     return this.fileManagers;
 };
-module.exports = PluginManager;
-
-},{}],40:[function(require,module,exports){
-var LessError = require('../less-error'),
-    tree = require("../tree");
-
-var FunctionImporter = module.exports = function FunctionImporter(context, fileInfo) {
-    this.fileInfo = fileInfo;
-};
-
-FunctionImporter.prototype.eval = function(contents, callback) {
-    var loaded = {},
-        loader,
-        registry;
-
-    registry = {
-        add: function(name, func) {
-            loaded[name] = func;
-        },
-        addMultiple: function(functions) {
-            Object.keys(functions).forEach(function(name) {
-                loaded[name] = functions[name];
-            });
-        }
-    };
 
-    try {
-        loader = new Function("functions", "tree", "fileInfo", contents);
-        loader(registry, tree, this.fileInfo);
-    } catch(e) {
-        callback(new LessError({
-            message: "Plugin evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
-            filename: this.fileInfo.filename
-        }), null );
-    }
-
-    callback(null, { functions: loaded });
-};
+// 
+module.exports = PluginManagerFactory;
 
-},{"../less-error":32,"../tree":62}],41:[function(require,module,exports){
-var PromiseConstructor;
+},{}],44:[function(require,module,exports){
+var PromiseConstructor,
+    utils = require('./utils');
 
 module.exports = function(environment, ParseTree, ImportManager) {
     var render = function (input, options, callback) {
         if (typeof options === 'function') {
             callback = options;
-            options = {};
+            options = utils.defaults(this.options, {});
+        }
+        else {
+            options = utils.defaults(this.options, options || {});
         }
 
         if (!callback) {
@@ -5171,7 +5805,7 @@ module.exports = function(environment, ParseTree, ImportManager) {
     return render;
 };
 
-},{"promise":undefined}],42:[function(require,module,exports){
+},{"./utils":86,"promise":undefined}],45:[function(require,module,exports){
 module.exports = function (SourceMapOutput, environment) {
 
     var SourceMapBuilder = function (options) {
@@ -5200,6 +5834,9 @@ module.exports = function (SourceMapOutput, environment) {
         if (this.options.sourceMapInputFilename) {
             this.sourceMapInputFilename = sourceMapOutput.normalizeFilename(this.options.sourceMapInputFilename);
         }
+        if (this.options.sourceMapBasepath !== undefined && this.sourceMapURL !== undefined) {
+            this.sourceMapURL = sourceMapOutput.removeBasepath(this.sourceMapURL);
+        }
         return css + this.getCSSAppendage();
     };
 
@@ -5242,7 +5879,7 @@ module.exports = function (SourceMapOutput, environment) {
     return SourceMapBuilder;
 };
 
-},{}],43:[function(require,module,exports){
+},{}],46:[function(require,module,exports){
 module.exports = function (environment) {
 
     var SourceMapOutput = function (options) {
@@ -5273,21 +5910,26 @@ module.exports = function (environment) {
         this._column = 0;
     };
 
-    SourceMapOutput.prototype.normalizeFilename = function(filename) {
-        filename = filename.replace(/\\/g, '/');
-
-        if (this._sourceMapBasepath && filename.indexOf(this._sourceMapBasepath) === 0) {
-            filename = filename.substring(this._sourceMapBasepath.length);
-            if (filename.charAt(0) === '\\' || filename.charAt(0) === '/') {
-                filename = filename.substring(1);
+    SourceMapOutput.prototype.removeBasepath = function(path) {
+        if (this._sourceMapBasepath && path.indexOf(this._sourceMapBasepath) === 0) {
+            path = path.substring(this._sourceMapBasepath.length);
+            if (path.charAt(0) === '\\' || path.charAt(0) === '/') {
+                path = path.substring(1);
             }
         }
+
+        return path;
+    };
+
+    SourceMapOutput.prototype.normalizeFilename = function(filename) {
+        filename = filename.replace(/\\/g, '/');
+        filename = this.removeBasepath(filename);
         return (this._sourceMapRootpath || "") + filename;
     };
 
     SourceMapOutput.prototype.add = function(chunk, fileInfo, index, mapLines) {
 
-        //ignore adding empty strings
+        // ignore adding empty strings
         if (!chunk) {
             return;
         }
@@ -5382,7 +6024,7 @@ module.exports = function (environment) {
     return SourceMapOutput;
 };
 
-},{}],44:[function(require,module,exports){
+},{}],47:[function(require,module,exports){
 var contexts = require("./contexts"),
     visitor = require("./visitors"),
     tree = require("./tree");
@@ -5398,7 +6040,7 @@ module.exports = function(root, options) {
     //
     //   `{ color: new tree.Color('#f01') }` will become:
     //
-    //   new tree.Rule('@color',
+    //   new tree.Declaration('@color',
     //     new tree.Value([
     //       new tree.Expression([
     //         new tree.Color('#f01')
@@ -5410,92 +6052,61 @@ module.exports = function(root, options) {
         variables = Object.keys(variables).map(function (k) {
             var value = variables[k];
 
-            if (! (value instanceof tree.Value)) {
-                if (! (value instanceof tree.Expression)) {
+            if (!(value instanceof tree.Value)) {
+                if (!(value instanceof tree.Expression)) {
                     value = new tree.Expression([value]);
                 }
                 value = new tree.Value([value]);
             }
-            return new tree.Rule('@' + k, value, false, null, 0);
+            return new tree.Declaration('@' + k, value, false, null, 0);
         });
         evalEnv.frames = [new tree.Ruleset(null, variables)];
     }
 
-    var preEvalVisitors = [],
-        visitors = [
+    var visitors = [
             new visitor.JoinSelectorVisitor(),
             new visitor.MarkVisibleSelectorsVisitor(true),
             new visitor.ExtendVisitor(),
             new visitor.ToCSSVisitor({compress: Boolean(options.compress)})
-        ], i;
+        ], v, visitorIterator;
 
+    // first() / get() allows visitors to be added while visiting
     if (options.pluginManager) {
-        var pluginVisitors = options.pluginManager.getVisitors();
-        for (i = 0; i < pluginVisitors.length; i++) {
-            var pluginVisitor = pluginVisitors[i];
-            if (pluginVisitor.isPreEvalVisitor) {
-                preEvalVisitors.push(pluginVisitor);
-            } else {
-                if (pluginVisitor.isPreVisitor) {
-                    visitors.splice(0, 0, pluginVisitor);
-                } else {
-                    visitors.push(pluginVisitor);
-                }
+        visitorIterator = options.pluginManager.visitor();
+        visitorIterator.first();
+        while ((v = visitorIterator.get())) {
+            if (v.isPreEvalVisitor) {
+                v.run(root);
             }
         }
     }
 
-    for (i = 0; i < preEvalVisitors.length; i++) {
-        preEvalVisitors[i].run(root);
-    }
-
     evaldRoot = root.eval(evalEnv);
 
-    for (i = 0; i < visitors.length; i++) {
+    for (var i = 0; i < visitors.length; i++) {
         visitors[i].run(evaldRoot);
     }
 
-    return evaldRoot;
-};
-
-},{"./contexts":11,"./tree":62,"./visitors":87}],45:[function(require,module,exports){
-var Node = require("./node");
-
-var Alpha = function (val) {
-    this.value = val;
-};
-Alpha.prototype = new Node();
-Alpha.prototype.type = "Alpha";
-
-Alpha.prototype.accept = function (visitor) {
-    this.value = visitor.visit(this.value);
-};
-Alpha.prototype.eval = function (context) {
-    if (this.value.eval) { return new Alpha(this.value.eval(context)); }
-    return this;
-};
-Alpha.prototype.genCSS = function (context, output) {
-    output.add("alpha(opacity=");
-
-    if (this.value.genCSS) {
-        this.value.genCSS(context, output);
-    } else {
-        output.add(this.value);
+    if (options.pluginManager) {
+        visitorIterator.first();
+        while ((v = visitorIterator.get())) {
+            if (!v.isPreEvalVisitor) {
+                v.run(evaldRoot);
+            }
+        }
     }
 
-    output.add(")");
+    return evaldRoot;
 };
 
-module.exports = Alpha;
-
-},{"./node":70}],46:[function(require,module,exports){
+},{"./contexts":12,"./tree":65,"./visitors":90}],48:[function(require,module,exports){
 var Node = require("./node");
 
 var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike, visibilityInfo) {
     this.value = value;
-    this.index = index;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.mapLines = mapLines;
-    this.currentFileInfo = currentFileInfo;
     this.rulesetLike = (typeof rulesetLike === 'undefined') ? false : rulesetLike;
     this.allowRoot = true;
     this.copyVisibilityInfo(visibilityInfo);
@@ -5503,7 +6114,7 @@ var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike,
 Anonymous.prototype = new Node();
 Anonymous.prototype.type = "Anonymous";
 Anonymous.prototype.eval = function () {
-    return new Anonymous(this.value, this.index, this.currentFileInfo, this.mapLines, this.rulesetLike, this.visibilityInfo());
+    return new Anonymous(this.value, this._index, this._fileInfo, this.mapLines, this.rulesetLike, this.visibilityInfo());
 };
 Anonymous.prototype.compare = function (other) {
     return other.toCSS && this.toCSS() === other.toCSS() ? 0 : undefined;
@@ -5512,11 +6123,14 @@ Anonymous.prototype.isRulesetLike = function() {
     return this.rulesetLike;
 };
 Anonymous.prototype.genCSS = function (context, output) {
-    output.add(this.value, this.currentFileInfo, this.index, this.mapLines);
+    this.nodeVisible = Boolean(this.value);
+    if (this.nodeVisible) {
+        output.add(this.value, this._fileInfo, this._index, this.mapLines);
+    }
 };
 module.exports = Anonymous;
 
-},{"./node":70}],47:[function(require,module,exports){
+},{"./node":73}],49:[function(require,module,exports){
 var Node = require("./node");
 
 var Assignment = function (key, val) {
@@ -5545,19 +6159,157 @@ Assignment.prototype.genCSS = function (context, output) {
 };
 module.exports = Assignment;
 
-},{"./node":70}],48:[function(require,module,exports){
-var Node = require("./node");
+},{"./node":73}],50:[function(require,module,exports){
+var Node = require("./node"),
+    Selector = require("./selector"),
+    Ruleset = require("./ruleset"),
+    Anonymous = require('./anonymous');
 
-var Attribute = function (key, op, value) {
-    this.key = key;
-    this.op = op;
-    this.value = value;
-};
-Attribute.prototype = new Node();
-Attribute.prototype.type = "Attribute";
-Attribute.prototype.eval = function (context) {
-    return new Attribute(this.key.eval ? this.key.eval(context) : this.key,
-        this.op, (this.value && this.value.eval) ? this.value.eval(context) : this.value);
+var AtRule = function (name, value, rules, index, currentFileInfo, debugInfo, isRooted, visibilityInfo) {
+    var i;
+
+    this.name  = name;
+    this.value = (value instanceof Node) ? value : (value ? new Anonymous(value) : value);
+    if (rules) {
+        if (Array.isArray(rules)) {
+            this.rules = rules;
+        } else {
+            this.rules = [rules];
+            this.rules[0].selectors = (new Selector([], null, null, index, currentFileInfo)).createEmptySelectors();
+        }
+        for (i = 0; i < this.rules.length; i++) {
+            this.rules[i].allowImports = true;
+        }
+        this.setParent(this.rules, this);
+    }
+    this._index = index;
+    this._fileInfo = currentFileInfo;
+    this.debugInfo = debugInfo;
+    this.isRooted = isRooted || false;
+    this.copyVisibilityInfo(visibilityInfo);
+    this.allowRoot = true;
+};
+
+AtRule.prototype = new Node();
+AtRule.prototype.type = "AtRule";
+AtRule.prototype.accept = function (visitor) {
+    var value = this.value, rules = this.rules;
+    if (rules) {
+        this.rules = visitor.visitArray(rules);
+    }
+    if (value) {
+        this.value = visitor.visit(value);
+    }
+};
+AtRule.prototype.isRulesetLike = function() {
+    return this.rules || !this.isCharset();
+};
+AtRule.prototype.isCharset = function() {
+    return "@charset" === this.name;
+};
+AtRule.prototype.genCSS = function (context, output) {
+    var value = this.value, rules = this.rules;
+    output.add(this.name, this.fileInfo(), this.getIndex());
+    if (value) {
+        output.add(' ');
+        value.genCSS(context, output);
+    }
+    if (rules) {
+        this.outputRuleset(context, output, rules);
+    } else {
+        output.add(';');
+    }
+};
+AtRule.prototype.eval = function (context) {
+    var mediaPathBackup, mediaBlocksBackup, value = this.value, rules = this.rules;
+
+    // media stored inside other atrule should not bubble over it
+    // backpup media bubbling information
+    mediaPathBackup = context.mediaPath;
+    mediaBlocksBackup = context.mediaBlocks;
+    // deleted media bubbling information
+    context.mediaPath = [];
+    context.mediaBlocks = [];
+
+    if (value) {
+        value = value.eval(context);
+    }
+    if (rules) {
+        // assuming that there is only one rule at this point - that is how parser constructs the rule
+        rules = [rules[0].eval(context)];
+        rules[0].root = true;
+    }
+    // restore media bubbling information
+    context.mediaPath = mediaPathBackup;
+    context.mediaBlocks = mediaBlocksBackup;
+
+    return new AtRule(this.name, value, rules,
+        this.getIndex(), this.fileInfo(), this.debugInfo, this.isRooted, this.visibilityInfo());
+};
+AtRule.prototype.variable = function (name) {
+    if (this.rules) {
+        // assuming that there is only one rule at this point - that is how parser constructs the rule
+        return Ruleset.prototype.variable.call(this.rules[0], name);
+    }
+};
+AtRule.prototype.find = function () {
+    if (this.rules) {
+        // assuming that there is only one rule at this point - that is how parser constructs the rule
+        return Ruleset.prototype.find.apply(this.rules[0], arguments);
+    }
+};
+AtRule.prototype.rulesets = function () {
+    if (this.rules) {
+        // assuming that there is only one rule at this point - that is how parser constructs the rule
+        return Ruleset.prototype.rulesets.apply(this.rules[0]);
+    }
+};
+AtRule.prototype.outputRuleset = function (context, output, rules) {
+    var ruleCnt = rules.length, i;
+    context.tabLevel = (context.tabLevel | 0) + 1;
+
+    // Compressed
+    if (context.compress) {
+        output.add('{');
+        for (i = 0; i < ruleCnt; i++) {
+            rules[i].genCSS(context, output);
+        }
+        output.add('}');
+        context.tabLevel--;
+        return;
+    }
+
+    // Non-compressed
+    var tabSetStr = '\n' + Array(context.tabLevel).join("  "), tabRuleStr = tabSetStr + "  ";
+    if (!ruleCnt) {
+        output.add(" {" + tabSetStr + '}');
+    } else {
+        output.add(" {" + tabRuleStr);
+        rules[0].genCSS(context, output);
+        for (i = 1; i < ruleCnt; i++) {
+            output.add(tabRuleStr);
+            rules[i].genCSS(context, output);
+        }
+        output.add(tabSetStr + '}');
+    }
+
+    context.tabLevel--;
+};
+module.exports = AtRule;
+
+},{"./anonymous":48,"./node":73,"./ruleset":78,"./selector":79}],51:[function(require,module,exports){
+var Node = require("./node");
+
+var Attribute = function (key, op, value) {
+    this.key = key;
+    this.op = op;
+    this.value = value;
+};
+Attribute.prototype = new Node();
+Attribute.prototype.type = "Attribute";
+Attribute.prototype.eval = function (context) {
+    return new Attribute(this.key.eval ? this.key.eval(context) : this.key,
+        this.op, (this.value && this.value.eval) ? this.value.eval(context) : this.value);
 };
 Attribute.prototype.genCSS = function (context, output) {
     output.add(this.toCSS(context));
@@ -5574,8 +6326,9 @@ Attribute.prototype.toCSS = function (context) {
 };
 module.exports = Attribute;
 
-},{"./node":70}],49:[function(require,module,exports){
+},{"./node":73}],52:[function(require,module,exports){
 var Node = require("./node"),
+    Anonymous = require("./anonymous"),
     FunctionCaller = require("../functions/function-caller");
 //
 // A function call node.
@@ -5583,8 +6336,9 @@ var Node = require("./node"),
 var Call = function (name, args, index, currentFileInfo) {
     this.name = name;
     this.args = args;
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this.mathOn = name === 'calc' ? false : true;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
 };
 Call.prototype = new Node();
 Call.prototype.type = "Call";
@@ -5605,30 +6359,55 @@ Call.prototype.accept = function (visitor) {
 // The function should receive the value, not the variable.
 //
 Call.prototype.eval = function (context) {
-    var args = this.args.map(function (a) { return a.eval(context); }),
-        result, funcCaller = new FunctionCaller(this.name, context, this.index, this.currentFileInfo);
 
+    /**
+     * Turn off math for calc(), and switch back on for evaluating nested functions
+     */
+    var currentMathContext = context.mathOn;
+    context.mathOn = this.mathOn;
+    var args = this.args.map(function (a) { return a.eval(context); });
+    context.mathOn = currentMathContext;
+
+    var result, funcCaller = new FunctionCaller(this.name, context, this.getIndex(), this.fileInfo());
+    
     if (funcCaller.isValid()) {
         try {
             result = funcCaller.call(args);
         } catch (e) {
-            throw { type: e.type || "Runtime",
-                    message: "error evaluating function `" + this.name + "`" +
-                             (e.message ? ': ' + e.message : ''),
-                    index: this.index, filename: this.currentFileInfo.filename };
+            throw { 
+                type: e.type || "Runtime",
+                message: "error evaluating function `" + this.name + "`" +
+                         (e.message ? ': ' + e.message : ''),
+                index: this.getIndex(), 
+                filename: this.fileInfo().filename,
+                line: e.lineNumber,
+                column: e.columnNumber
+            };
         }
 
-        if (result != null) {
-            result.index = this.index;
-            result.currentFileInfo = this.currentFileInfo;
+        if (result !== null && result !== undefined) {
+            // Results that that are not nodes are cast as Anonymous nodes
+            // Falsy values or booleans are returned as empty nodes
+            if (!(result instanceof Node)) {
+                if (!result || result === true) {
+                    result = new Anonymous(null); 
+                }
+                else {
+                    result = new Anonymous(result.toString()); 
+                }
+                
+            }
+            result._index = this._index;
+            result._fileInfo = this._fileInfo;
             return result;
         }
+
     }
 
-    return new Call(this.name, args, this.index, this.currentFileInfo);
+    return new Call(this.name, args, this.getIndex(), this.fileInfo());
 };
 Call.prototype.genCSS = function (context, output) {
-    output.add(this.name + "(", this.currentFileInfo, this.index);
+    output.add(this.name + "(", this.fileInfo(), this.getIndex());
 
     for (var i = 0; i < this.args.length; i++) {
         this.args[i].genCSS(context, output);
@@ -5641,7 +6420,7 @@ Call.prototype.genCSS = function (context, output) {
 };
 module.exports = Call;
 
-},{"../functions/function-caller":21,"./node":70}],50:[function(require,module,exports){
+},{"../functions/function-caller":25,"./anonymous":48,"./node":73}],53:[function(require,module,exports){
 var Node = require("./node"),
     colors = require("../data/colors");
 
@@ -5743,7 +6522,7 @@ Color.prototype.toCSS = function (context, doNotCompress) {
 // we create a new Color node to hold the result.
 //
 Color.prototype.operate = function (context, op, other) {
-    var rgb = [];
+    var rgb = new Array(3);
     var alpha = this.alpha * (1 - other.alpha) + other.alpha;
     for (var c = 0; c < 3; c++) {
         rgb[c] = this._operate(context, op, this.rgb[c], other.rgb[c]);
@@ -5776,7 +6555,7 @@ Color.prototype.toHSL = function () {
     }
     return { h: h * 360, s: s, l: l, a: a };
 };
-//Adapted from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
+// Adapted from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
 Color.prototype.toHSV = function () {
     var r = this.rgb[0] / 255,
         g = this.rgb[1] / 255,
@@ -5796,7 +6575,7 @@ Color.prototype.toHSV = function () {
     if (max === min) {
         h = 0;
     } else {
-        switch(max) {
+        switch (max) {
             case r: h = (g - b) / d + (g < b ? 6 : 0); break;
             case g: h = (b - r) / d + 2; break;
             case b: h = (r - g) / d + 4; break;
@@ -5832,7 +6611,7 @@ Color.fromKeyword = function(keyword) {
 };
 module.exports = Color;
 
-},{"../data/colors":12,"./node":70}],51:[function(require,module,exports){
+},{"../data/colors":13,"./node":73}],54:[function(require,module,exports){
 var Node = require("./node");
 
 var Combinator = function (value) {
@@ -5857,22 +6636,22 @@ Combinator.prototype.genCSS = function (context, output) {
 };
 module.exports = Combinator;
 
-},{"./node":70}],52:[function(require,module,exports){
+},{"./node":73}],55:[function(require,module,exports){
 var Node = require("./node"),
     getDebugInfo = require("./debug-info");
 
 var Comment = function (value, isLineComment, index, currentFileInfo) {
     this.value = value;
     this.isLineComment = isLineComment;
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.allowRoot = true;
 };
 Comment.prototype = new Node();
 Comment.prototype.type = "Comment";
 Comment.prototype.genCSS = function (context, output) {
     if (this.debugInfo) {
-        output.add(getDebugInfo(context, this), this.currentFileInfo, this.index);
+        output.add(getDebugInfo(context, this), this.fileInfo(), this.getIndex());
     }
     output.add(this.value);
 };
@@ -5882,14 +6661,14 @@ Comment.prototype.isSilent = function(context) {
 };
 module.exports = Comment;
 
-},{"./debug-info":54,"./node":70}],53:[function(require,module,exports){
+},{"./debug-info":57,"./node":73}],56:[function(require,module,exports){
 var Node = require("./node");
 
 var Condition = function (op, l, r, i, negate) {
     this.op = op.trim();
     this.lvalue = l;
     this.rvalue = r;
-    this.index = i;
+    this._index = i;
     this.negate = negate;
 };
 Condition.prototype = new Node();
@@ -5921,11 +6700,11 @@ Condition.prototype.eval = function (context) {
 };
 module.exports = Condition;
 
-},{"./node":70}],54:[function(require,module,exports){
+},{"./node":73}],57:[function(require,module,exports){
 var debugInfo = function(context, ctx, lineSeparator) {
     var result = "";
     if (context.dumpLineNumbers && !context.compress) {
-        switch(context.dumpLineNumbers) {
+        switch (context.dumpLineNumbers) {
             case 'comments':
                 result = debugInfo.asComment(ctx);
                 break;
@@ -5961,13 +6740,114 @@ debugInfo.asMediaQuery = function(ctx) {
 
 module.exports = debugInfo;
 
-},{}],55:[function(require,module,exports){
+},{}],58:[function(require,module,exports){
 var Node = require("./node"),
-    contexts = require("../contexts");
+    Value = require("./value"),
+    Keyword = require("./keyword"),
+    Anonymous = require("./anonymous");
+
+var Declaration = function (name, value, important, merge, index, currentFileInfo, inline, variable) {
+    this.name = name;
+    this.value = (value instanceof Node) ? value : new Value([value ? new Anonymous(value) : null]);
+    this.important = important ? ' ' + important.trim() : '';
+    this.merge = merge;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
+    this.inline = inline || false;
+    this.variable = (variable !== undefined) ? variable
+        : (name.charAt && (name.charAt(0) === '@'));
+    this.allowRoot = true;
+    this.setParent(this.value, this);
+};
+
+function evalName(context, name) {
+    var value = "", i, n = name.length,
+        output = {add: function (s) {value += s;}};
+    for (i = 0; i < n; i++) {
+        name[i].eval(context).genCSS(context, output);
+    }
+    return value;
+}
+
+Declaration.prototype = new Node();
+Declaration.prototype.type = "Declaration";
+Declaration.prototype.genCSS = function (context, output) {
+    output.add(this.name + (context.compress ? ':' : ': '), this.fileInfo(), this.getIndex());
+    try {
+        this.value.genCSS(context, output);
+    }
+    catch (e) {
+        e.index = this._index;
+        e.filename = this._fileInfo.filename;
+        throw e;
+    }
+    output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? "" : ";"), this._fileInfo, this._index);
+};
+Declaration.prototype.eval = function (context) {
+    var strictMathBypass = false, name = this.name, evaldValue, variable = this.variable;
+    if (typeof name !== "string") {
+        // expand 'primitive' name directly to get
+        // things faster (~10% for benchmark.less):
+        name = (name.length === 1) && (name[0] instanceof Keyword) ?
+                name[0].value : evalName(context, name);
+        variable = false; // never treat expanded interpolation as new variable name
+    }
+    if (name === "font" && !context.strictMath) {
+        strictMathBypass = true;
+        context.strictMath = true;
+    }
+    try {
+        context.importantScope.push({});
+        evaldValue = this.value.eval(context);
+
+        if (!this.variable && evaldValue.type === "DetachedRuleset") {
+            throw { message: "Rulesets cannot be evaluated on a property.",
+                index: this.getIndex(), filename: this.fileInfo().filename };
+        }
+        var important = this.important,
+            importantResult = context.importantScope.pop();
+        if (!important && importantResult.important) {
+            important = importantResult.important;
+        }
+
+        return new Declaration(name,
+                          evaldValue,
+                          important,
+                          this.merge,
+                          this.getIndex(), this.fileInfo(), this.inline,
+                              variable);
+    }
+    catch (e) {
+        if (typeof e.index !== 'number') {
+            e.index = this.getIndex();
+            e.filename = this.fileInfo().filename;
+        }
+        throw e;
+    }
+    finally {
+        if (strictMathBypass) {
+            context.strictMath = false;
+        }
+    }
+};
+Declaration.prototype.makeImportant = function () {
+    return new Declaration(this.name,
+                          this.value,
+                          "!important",
+                          this.merge,
+                          this.getIndex(), this.fileInfo(), this.inline);
+};
+
+module.exports = Declaration;
+},{"./anonymous":48,"./keyword":68,"./node":73,"./value":83}],59:[function(require,module,exports){
+var Node = require("./node"),
+    contexts = require("../contexts"),
+    utils = require("../utils");
 
 var DetachedRuleset = function (ruleset, frames) {
     this.ruleset = ruleset;
     this.frames = frames;
+    this.setParent(this.ruleset, this);
 };
 DetachedRuleset.prototype = new Node();
 DetachedRuleset.prototype.type = "DetachedRuleset";
@@ -5976,7 +6856,7 @@ DetachedRuleset.prototype.accept = function (visitor) {
     this.ruleset = visitor.visit(this.ruleset);
 };
 DetachedRuleset.prototype.eval = function (context) {
-    var frames = this.frames || context.frames.slice(0);
+    var frames = this.frames || utils.copyArray(context.frames);
     return new DetachedRuleset(this.ruleset, frames);
 };
 DetachedRuleset.prototype.callEval = function (context) {
@@ -5984,7 +6864,7 @@ DetachedRuleset.prototype.callEval = function (context) {
 };
 module.exports = DetachedRuleset;
 
-},{"../contexts":11,"./node":70}],56:[function(require,module,exports){
+},{"../contexts":12,"../utils":86,"./node":73}],60:[function(require,module,exports){
 var Node = require("./node"),
     unitConversions = require("../data/unit-conversions"),
     Unit = require("./unit"),
@@ -5995,8 +6875,12 @@ var Node = require("./node"),
 //
 var Dimension = function (value, unit) {
     this.value = parseFloat(value);
+    if (isNaN(this.value)) {
+        throw new Error("Dimension is not a number.");
+    }
     this.unit = (unit && unit instanceof Unit) ? unit :
       new Unit(unit ? [unit] : undefined);
+    this.setParent(this.unit, this);
 };
 
 Dimension.prototype = new Node();
@@ -6044,7 +6928,7 @@ Dimension.prototype.genCSS = function (context, output) {
 // we default to the first Dimension's unit,
 // so `1px + 2` will yield `3px`.
 Dimension.prototype.operate = function (context, op, other) {
-    /*jshint noempty:false */
+    /* jshint noempty:false */
     var value = this._operate(context, op, this.value, other.value),
         unit = this.unit.clone();
 
@@ -6143,148 +7027,12 @@ Dimension.prototype.convertTo = function (conversions) {
 };
 module.exports = Dimension;
 
-},{"../data/unit-conversions":14,"./color":50,"./node":70,"./unit":79}],57:[function(require,module,exports){
-var Node = require("./node"),
-    Selector = require("./selector"),
-    Ruleset = require("./ruleset");
-
-var Directive = function (name, value, rules, index, currentFileInfo, debugInfo, isRooted, visibilityInfo) {
-    var i;
-
-    this.name  = name;
-    this.value = value;
-    if (rules) {
-        if (Array.isArray(rules)) {
-            this.rules = rules;
-        } else {
-            this.rules = [rules];
-            this.rules[0].selectors = (new Selector([], null, null, this.index, currentFileInfo)).createEmptySelectors();
-        }
-        for (i = 0; i < this.rules.length; i++) {
-            this.rules[i].allowImports = true;
-        }
-    }
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
-    this.debugInfo = debugInfo;
-    this.isRooted = isRooted || false;
-    this.copyVisibilityInfo(visibilityInfo);
-    this.allowRoot = true;
-};
-
-Directive.prototype = new Node();
-Directive.prototype.type = "Directive";
-Directive.prototype.accept = function (visitor) {
-    var value = this.value, rules = this.rules;
-    if (rules) {
-        this.rules = visitor.visitArray(rules);
-    }
-    if (value) {
-        this.value = visitor.visit(value);
-    }
-};
-Directive.prototype.isRulesetLike = function() {
-    return this.rules || !this.isCharset();
-};
-Directive.prototype.isCharset = function() {
-    return "@charset" === this.name;
-};
-Directive.prototype.genCSS = function (context, output) {
-    var value = this.value, rules = this.rules;
-    output.add(this.name, this.currentFileInfo, this.index);
-    if (value) {
-        output.add(' ');
-        value.genCSS(context, output);
-    }
-    if (rules) {
-        this.outputRuleset(context, output, rules);
-    } else {
-        output.add(';');
-    }
-};
-Directive.prototype.eval = function (context) {
-    var mediaPathBackup, mediaBlocksBackup, value = this.value, rules = this.rules;
-
-    //media stored inside other directive should not bubble over it
-    //backpup media bubbling information
-    mediaPathBackup = context.mediaPath;
-    mediaBlocksBackup = context.mediaBlocks;
-    //deleted media bubbling information
-    context.mediaPath = [];
-    context.mediaBlocks = [];
-
-    if (value) {
-        value = value.eval(context);
-    }
-    if (rules) {
-        // assuming that there is only one rule at this point - that is how parser constructs the rule
-        rules = [rules[0].eval(context)];
-        rules[0].root = true;
-    }
-    //restore media bubbling information
-    context.mediaPath = mediaPathBackup;
-    context.mediaBlocks = mediaBlocksBackup;
-
-    return new Directive(this.name, value, rules,
-        this.index, this.currentFileInfo, this.debugInfo, this.isRooted, this.visibilityInfo());
-};
-Directive.prototype.variable = function (name) {
-    if (this.rules) {
-        // assuming that there is only one rule at this point - that is how parser constructs the rule
-        return Ruleset.prototype.variable.call(this.rules[0], name);
-    }
-};
-Directive.prototype.find = function () {
-    if (this.rules) {
-        // assuming that there is only one rule at this point - that is how parser constructs the rule
-        return Ruleset.prototype.find.apply(this.rules[0], arguments);
-    }
-};
-Directive.prototype.rulesets = function () {
-    if (this.rules) {
-        // assuming that there is only one rule at this point - that is how parser constructs the rule
-        return Ruleset.prototype.rulesets.apply(this.rules[0]);
-    }
-};
-Directive.prototype.outputRuleset = function (context, output, rules) {
-    var ruleCnt = rules.length, i;
-    context.tabLevel = (context.tabLevel | 0) + 1;
-
-    // Compressed
-    if (context.compress) {
-        output.add('{');
-        for (i = 0; i < ruleCnt; i++) {
-            rules[i].genCSS(context, output);
-        }
-        output.add('}');
-        context.tabLevel--;
-        return;
-    }
-
-    // Non-compressed
-    var tabSetStr = '\n' + Array(context.tabLevel).join("  "), tabRuleStr = tabSetStr + "  ";
-    if (!ruleCnt) {
-        output.add(" {" + tabSetStr + '}');
-    } else {
-        output.add(" {" + tabRuleStr);
-        rules[0].genCSS(context, output);
-        for (i = 1; i < ruleCnt; i++) {
-            output.add(tabRuleStr);
-            rules[i].genCSS(context, output);
-        }
-        output.add(tabSetStr + '}');
-    }
-
-    context.tabLevel--;
-};
-module.exports = Directive;
-
-},{"./node":70,"./ruleset":76,"./selector":77}],58:[function(require,module,exports){
+},{"../data/unit-conversions":15,"./color":53,"./node":73,"./unit":81}],61:[function(require,module,exports){
 var Node = require("./node"),
     Paren = require("./paren"),
     Combinator = require("./combinator");
 
-var Element = function (combinator, value, index, currentFileInfo, info) {
+var Element = function (combinator, value, index, currentFileInfo, visibilityInfo) {
     this.combinator = combinator instanceof Combinator ?
                       combinator : new Combinator(combinator);
 
@@ -6295,9 +7043,10 @@ var Element = function (combinator, value, index, currentFileInfo, info) {
     } else {
         this.value = "";
     }
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
-    this.copyVisibilityInfo(info);
+    this._index = index;
+    this._fileInfo = currentFileInfo;
+    this.copyVisibilityInfo(visibilityInfo);
+    this.setParent(this.combinator, this);
 };
 Element.prototype = new Node();
 Element.prototype.type = "Element";
@@ -6311,17 +7060,17 @@ Element.prototype.accept = function (visitor) {
 Element.prototype.eval = function (context) {
     return new Element(this.combinator,
                              this.value.eval ? this.value.eval(context) : this.value,
-                             this.index,
-                             this.currentFileInfo, this.visibilityInfo());
+                             this.getIndex(),
+                             this.fileInfo(), this.visibilityInfo());
 };
 Element.prototype.clone = function () {
     return new Element(this.combinator,
         this.value,
-        this.index,
-        this.currentFileInfo, this.visibilityInfo());
+        this.getIndex(),
+        this.fileInfo(), this.visibilityInfo());
 };
 Element.prototype.genCSS = function (context, output) {
-    output.add(this.toCSS(context), this.currentFileInfo, this.index);
+    output.add(this.toCSS(context), this.fileInfo(), this.getIndex());
 };
 Element.prototype.toCSS = function (context) {
     context = context || {};
@@ -6341,7 +7090,7 @@ Element.prototype.toCSS = function (context) {
 };
 module.exports = Element;
 
-},{"./combinator":51,"./node":70,"./paren":72}],59:[function(require,module,exports){
+},{"./combinator":54,"./node":73,"./paren":75}],62:[function(require,module,exports){
 var Node = require("./node"),
     Paren = require("./paren"),
     Comment = require("./comment");
@@ -6399,21 +7148,21 @@ Expression.prototype.throwAwayComments = function () {
 };
 module.exports = Expression;
 
-},{"./comment":52,"./node":70,"./paren":72}],60:[function(require,module,exports){
+},{"./comment":55,"./node":73,"./paren":75}],63:[function(require,module,exports){
 var Node = require("./node"),
     Selector = require("./selector");
 
 var Extend = function Extend(selector, option, index, currentFileInfo, visibilityInfo) {
     this.selector = selector;
     this.option = option;
-    this.index = index;
     this.object_id = Extend.next_id++;
     this.parent_ids = [this.object_id];
-    this.currentFileInfo = currentFileInfo || {};
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.copyVisibilityInfo(visibilityInfo);
     this.allowRoot = true;
 
-    switch(option) {
+    switch (option) {
         case "all":
             this.allowBefore = true;
             this.allowAfter = true;
@@ -6423,6 +7172,7 @@ var Extend = function Extend(selector, option, index, currentFileInfo, visibilit
             this.allowAfter = false;
             break;
     }
+    this.setParent(this.selector, this);
 };
 Extend.next_id = 0;
 
@@ -6432,12 +7182,12 @@ Extend.prototype.accept = function (visitor) {
     this.selector = visitor.visit(this.selector);
 };
 Extend.prototype.eval = function (context) {
-    return new Extend(this.selector.eval(context), this.option, this.index, this.currentFileInfo, this.visibilityInfo());
+    return new Extend(this.selector.eval(context), this.option, this.getIndex(), this.fileInfo(), this.visibilityInfo());
 };
 Extend.prototype.clone = function (context) {
-    return new Extend(this.selector, this.option, this.index, this.currentFileInfo, this.visibilityInfo());
+    return new Extend(this.selector, this.option, this.getIndex(), this.fileInfo(), this.visibilityInfo());
 };
-//it concatenates (joins) all selectors in selector array
+// it concatenates (joins) all selectors in selector array
 Extend.prototype.findSelfSelectors = function (selectors) {
     var selfElements = [],
         i,
@@ -6458,13 +7208,15 @@ Extend.prototype.findSelfSelectors = function (selectors) {
 };
 module.exports = Extend;
 
-},{"./node":70,"./selector":77}],61:[function(require,module,exports){
+},{"./node":73,"./selector":79}],64:[function(require,module,exports){
 var Node = require("./node"),
     Media = require("./media"),
     URL = require("./url"),
     Quoted = require("./quoted"),
     Ruleset = require("./ruleset"),
-    Anonymous = require("./anonymous");
+    Anonymous = require("./anonymous"),
+    utils = require("../utils"),
+    LessError = require("../less-error");
 
 //
 // CSS @import node
@@ -6480,21 +7232,23 @@ var Node = require("./node"),
 //
 var Import = function (path, features, options, index, currentFileInfo, visibilityInfo) {
     this.options = options;
-    this.index = index;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.path = path;
     this.features = features;
-    this.currentFileInfo = currentFileInfo;
     this.allowRoot = true;
 
     if (this.options.less !== undefined || this.options.inline) {
         this.css = !this.options.less || this.options.inline;
     } else {
         var pathValue = this.getPath();
-        if (pathValue && /[#\.\&\?\/]css([\?;].*)?$/.test(pathValue)) {
+        if (pathValue && /[#\.\&\?]css([\?;].*)?$/.test(pathValue)) {
             this.css = true;
         }
     }
     this.copyVisibilityInfo(visibilityInfo);
+    this.setParent(this.features, this);
+    this.setParent(this.path, this);
 };
 
 //
@@ -6513,13 +7267,13 @@ Import.prototype.accept = function (visitor) {
         this.features = visitor.visit(this.features);
     }
     this.path = visitor.visit(this.path);
-    if (!this.options.plugin && !this.options.inline && this.root) {
+    if (!this.options.isPlugin && !this.options.inline && this.root) {
         this.root = visitor.visit(this.root);
     }
 };
 Import.prototype.genCSS = function (context, output) {
-    if (this.css && this.path.currentFileInfo.reference === undefined) {
-        output.add("@import ", this.currentFileInfo, this.index);
+    if (this.css && this.path._fileInfo.reference === undefined) {
+        output.add("@import ", this._fileInfo, this._index);
         this.path.genCSS(context, output);
         if (this.features) {
             output.add(" ");
@@ -6550,11 +7304,11 @@ Import.prototype.evalForImport = function (context) {
         path = path.value;
     }
 
-    return new Import(path.eval(context), this.features, this.options, this.index, this.currentFileInfo, this.visibilityInfo());
+    return new Import(path.eval(context), this.features, this.options, this._index, this._fileInfo, this.visibilityInfo());
 };
 Import.prototype.evalPath = function (context) {
     var path = this.path.eval(context);
-    var rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
+    var rootpath = this._fileInfo && this._fileInfo.rootpath;
 
     if (!(path instanceof URL)) {
         if (rootpath) {
@@ -6574,8 +7328,8 @@ Import.prototype.eval = function (context) {
     if (this.options.reference || this.blocksVisibility()) {
         if (result.length || result.length === 0) {
             result.forEach(function (node) {
-                    node.addVisibilityBlock();
-                }
+                node.addVisibilityBlock();
+            }
             );
         } else {
             result.addVisibilityBlock();
@@ -6587,11 +7341,21 @@ Import.prototype.doEval = function (context) {
     var ruleset, registry,
         features = this.features && this.features.eval(context);
 
-    if (this.options.plugin) {
+    if (this.options.isPlugin) {
+        if (this.root && this.root.eval) {
+            try {
+                this.root.eval(context);
+            }
+            catch (e) {
+                e.message = "Plugin error during evaluation";
+                throw new LessError(e, this.root.imports, this.root.filename);
+            }
+        }
         registry = context.frames[0] && context.frames[0].functionRegistry;
         if ( registry && this.root && this.root.functions ) {
             registry.addMultiple( this.root.functions );
         }
+
         return [];
     }
 
@@ -6605,20 +7369,20 @@ Import.prototype.doEval = function (context) {
     }
     if (this.options.inline) {
         var contents = new Anonymous(this.root, 0,
-          {
-              filename: this.importedFilename,
-              reference: this.path.currentFileInfo && this.path.currentFileInfo.reference
-          }, true, true);
+            {
+                filename: this.importedFilename,
+                reference: this.path._fileInfo && this.path._fileInfo.reference
+            }, true, true);
 
         return this.features ? new Media([contents], this.features.value) : [contents];
     } else if (this.css) {
-        var newImport = new Import(this.evalPath(context), features, this.options, this.index);
+        var newImport = new Import(this.evalPath(context), features, this.options, this._index);
         if (!newImport.css && this.error) {
             throw this.error;
         }
         return newImport;
     } else {
-        ruleset = new Ruleset(null, this.root.rules.slice(0));
+        ruleset = new Ruleset(null, utils.copyArray(this.root.rules));
         ruleset.evalImports(context);
 
         return this.features ? new Media(ruleset.rules, this.features.value) : ruleset.rules;
@@ -6626,19 +7390,19 @@ Import.prototype.doEval = function (context) {
 };
 module.exports = Import;
 
-},{"./anonymous":46,"./media":66,"./node":70,"./quoted":73,"./ruleset":76,"./url":80}],62:[function(require,module,exports){
-var tree = {};
+},{"../less-error":36,"../utils":86,"./anonymous":48,"./media":69,"./node":73,"./quoted":77,"./ruleset":78,"./url":82}],65:[function(require,module,exports){
+var tree = Object.create(null);
 
 tree.Node = require('./node');
-tree.Alpha = require('./alpha');
 tree.Color = require('./color');
-tree.Directive = require('./directive');
+tree.AtRule = require('./atrule');
 tree.DetachedRuleset = require('./detached-ruleset');
 tree.Operation = require('./operation');
 tree.Dimension = require('./dimension');
 tree.Unit = require('./unit');
 tree.Keyword = require('./keyword');
 tree.Variable = require('./variable');
+tree.Property = require('./property');
 tree.Ruleset = require('./ruleset');
 tree.Element = require('./element');
 tree.Attribute = require('./attribute');
@@ -6646,7 +7410,7 @@ tree.Combinator = require('./combinator');
 tree.Selector = require('./selector');
 tree.Quoted = require('./quoted');
 tree.Expression = require('./expression');
-tree.Rule = require('./rule');
+tree.Declaration = require('./declaration');
 tree.Call = require('./call');
 tree.URL = require('./url');
 tree.Import = require('./import');
@@ -6665,11 +7429,11 @@ tree.Media = require('./media');
 tree.UnicodeDescriptor = require('./unicode-descriptor');
 tree.Negative = require('./negative');
 tree.Extend = require('./extend');
-tree.RulesetCall = require('./ruleset-call');
+tree.VariableCall = require('./variable-call');
 
 module.exports = tree;
 
-},{"./alpha":45,"./anonymous":46,"./assignment":47,"./attribute":48,"./call":49,"./color":50,"./combinator":51,"./comment":52,"./condition":53,"./detached-ruleset":55,"./dimension":56,"./directive":57,"./element":58,"./expression":59,"./extend":60,"./import":61,"./javascript":63,"./keyword":65,"./media":66,"./mixin-call":67,"./mixin-definition":68,"./negative":69,"./node":70,"./operation":71,"./paren":72,"./quoted":73,"./rule":74,"./ruleset":76,"./ruleset-call":75,"./selector":77,"./unicode-descriptor":78,"./unit":79,"./url":80,"./value":81,"./variable":82}],63:[function(require,module,exports){
+},{"./anonymous":48,"./assignment":49,"./atrule":50,"./attribute":51,"./call":52,"./color":53,"./combinator":54,"./comment":55,"./condition":56,"./declaration":58,"./detached-ruleset":59,"./dimension":60,"./element":61,"./expression":62,"./extend":63,"./import":64,"./javascript":66,"./keyword":68,"./media":69,"./mixin-call":70,"./mixin-definition":71,"./negative":72,"./node":73,"./operation":74,"./paren":75,"./property":76,"./quoted":77,"./ruleset":78,"./selector":79,"./unicode-descriptor":80,"./unit":81,"./url":82,"./value":83,"./variable":85,"./variable-call":84}],66:[function(require,module,exports){
 var JsEvalNode = require("./js-eval-node"),
     Dimension = require("./dimension"),
     Quoted = require("./quoted"),
@@ -6678,8 +7442,8 @@ var JsEvalNode = require("./js-eval-node"),
 var JavaScript = function (string, escaped, index, currentFileInfo) {
     this.escaped = escaped;
     this.expression = string;
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
 };
 JavaScript.prototype = new JsEvalNode();
 JavaScript.prototype.type = "JavaScript";
@@ -6689,7 +7453,7 @@ JavaScript.prototype.eval = function(context) {
     if (typeof result === 'number') {
         return new Dimension(result);
     } else if (typeof result === 'string') {
-        return new Quoted('"' + result + '"', result, this.escaped, this.index);
+        return new Quoted('"' + result + '"', result, this.escaped, this._index);
     } else if (Array.isArray(result)) {
         return new Anonymous(result.join(', '));
     } else {
@@ -6699,7 +7463,7 @@ JavaScript.prototype.eval = function(context) {
 
 module.exports = JavaScript;
 
-},{"./anonymous":46,"./dimension":56,"./js-eval-node":64,"./quoted":73}],64:[function(require,module,exports){
+},{"./anonymous":48,"./dimension":60,"./js-eval-node":67,"./quoted":77}],67:[function(require,module,exports){
 var Node = require("./node"),
     Variable = require("./variable");
 
@@ -6712,28 +7476,28 @@ JsEvalNode.prototype.evaluateJavaScript = function (expression, context) {
         that = this,
         evalContext = {};
 
-    if (context.javascriptEnabled !== undefined && !context.javascriptEnabled) {
-        throw { message: "You are using JavaScript, which has been disabled.",
-            filename: this.currentFileInfo.filename,
-            index: this.index };
+    if (!context.javascriptEnabled) {
+        throw { message: "Inline JavaScript is not enabled. Is it set in your options?",
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
     }
 
     expression = expression.replace(/@\{([\w-]+)\}/g, function (_, name) {
-        return that.jsify(new Variable('@' + name, that.index, that.currentFileInfo).eval(context));
+        return that.jsify(new Variable('@' + name, that.getIndex(), that.fileInfo()).eval(context));
     });
 
     try {
         expression = new Function('return (' + expression + ')');
     } catch (e) {
         throw { message: "JavaScript evaluation error: " + e.message + " from `" + expression + "`" ,
-            filename: this.currentFileInfo.filename,
-            index: this.index };
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
     }
 
     var variables = context.frames[0].variables();
     for (var k in variables) {
         if (variables.hasOwnProperty(k)) {
-            /*jshint loopfunc:true */
+            /* jshint loopfunc:true */
             evalContext[k.slice(1)] = {
                 value: variables[k].value,
                 toJS: function () {
@@ -6747,8 +7511,8 @@ JsEvalNode.prototype.evaluateJavaScript = function (expression, context) {
         result = expression.call(evalContext);
     } catch (e) {
         throw { message: "JavaScript evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
-            filename: this.currentFileInfo.filename,
-            index: this.index };
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
     }
     return result;
 };
@@ -6762,7 +7526,7 @@ JsEvalNode.prototype.jsify = function (obj) {
 
 module.exports = JsEvalNode;
 
-},{"./node":70,"./variable":82}],65:[function(require,module,exports){
+},{"./node":73,"./variable":85}],68:[function(require,module,exports){
 var Node = require("./node");
 
 var Keyword = function (value) { this.value = value; };
@@ -6778,29 +7542,33 @@ Keyword.False = new Keyword('false');
 
 module.exports = Keyword;
 
-},{"./node":70}],66:[function(require,module,exports){
+},{"./node":73}],69:[function(require,module,exports){
 var Ruleset = require("./ruleset"),
     Value = require("./value"),
     Selector = require("./selector"),
     Anonymous = require("./anonymous"),
     Expression = require("./expression"),
-    Directive = require("./directive");
+    AtRule = require("./atrule"),
+    utils = require("../utils");
 
 var Media = function (value, features, index, currentFileInfo, visibilityInfo) {
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
 
-    var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();
+    var selectors = (new Selector([], null, null, this._index, this._fileInfo)).createEmptySelectors();
 
     this.features = new Value(features);
     this.rules = [new Ruleset(selectors, value)];
     this.rules[0].allowImports = true;
     this.copyVisibilityInfo(visibilityInfo);
     this.allowRoot = true;
+    this.setParent(selectors, this);
+    this.setParent(this.features, this);
+    this.setParent(this.rules, this);
 };
-Media.prototype = new Directive();
+Media.prototype = new AtRule();
 Media.prototype.type = "Media";
-Media.prototype.isRulesetLike = true;
+Media.prototype.isRulesetLike = function() { return true; };
 Media.prototype.accept = function (visitor) {
     if (this.features) {
         this.features = visitor.visit(this.features);
@@ -6810,7 +7578,7 @@ Media.prototype.accept = function (visitor) {
     }
 };
 Media.prototype.genCSS = function (context, output) {
-    output.add('@media ', this.currentFileInfo, this.index);
+    output.add('@media ', this._fileInfo, this._index);
     this.features.genCSS(context, output);
     this.outputRuleset(context, output, this.rules);
 };
@@ -6820,24 +7588,13 @@ Media.prototype.eval = function (context) {
         context.mediaPath = [];
     }
 
-    var media = new Media(null, [], this.index, this.currentFileInfo, this.visibilityInfo());
+    var media = new Media(null, [], this._index, this._fileInfo, this.visibilityInfo());
     if (this.debugInfo) {
         this.rules[0].debugInfo = this.debugInfo;
         media.debugInfo = this.debugInfo;
     }
-    var strictMathBypass = false;
-    if (!context.strictMath) {
-        strictMathBypass = true;
-        context.strictMath = true;
-    }
-    try {
-        media.features = this.features.eval(context);
-    }
-    finally {
-        if (strictMathBypass) {
-            context.strictMath = false;
-        }
-    }
+    
+    media.features = this.features.eval(context);
 
     context.mediaPath.push(media);
     context.mediaBlocks.push(media);
@@ -6857,10 +7614,11 @@ Media.prototype.evalTop = function (context) {
 
     // Render all dependent Media blocks.
     if (context.mediaBlocks.length > 1) {
-        var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();
+        var selectors = (new Selector([], null, null, this.getIndex(), this.fileInfo())).createEmptySelectors();
         result = new Ruleset(selectors, context.mediaBlocks);
         result.multiMedia = true;
         result.copyVisibilityInfo(this.visibilityInfo());
+        this.setParent(result, this);
     }
 
     delete context.mediaBlocks;
@@ -6897,6 +7655,7 @@ Media.prototype.evalNested = function (context) {
 
         return new Expression(path);
     }));
+    this.setParent(this.features, this);
 
     // Fake a tree-node that doesn't output anything.
     return new Ruleset([], []);
@@ -6921,11 +7680,12 @@ Media.prototype.bubbleSelectors = function (selectors) {
     if (!selectors) {
         return;
     }
-    this.rules = [new Ruleset(selectors.slice(0), [this.rules[0]])];
+    this.rules = [new Ruleset(utils.copyArray(selectors), [this.rules[0]])];
+    this.setParent(this.rules, this);
 };
 module.exports = Media;
 
-},{"./anonymous":46,"./directive":57,"./expression":59,"./ruleset":76,"./selector":77,"./value":81}],67:[function(require,module,exports){
+},{"../utils":86,"./anonymous":48,"./atrule":50,"./expression":62,"./ruleset":78,"./selector":79,"./value":83}],70:[function(require,module,exports){
 var Node = require("./node"),
     Selector = require("./selector"),
     MixinDefinition = require("./mixin-definition"),
@@ -6934,10 +7694,11 @@ var Node = require("./node"),
 var MixinCall = function (elements, args, index, currentFileInfo, important) {
     this.selector = new Selector(elements);
     this.arguments = args || [];
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.important = important;
     this.allowRoot = true;
+    this.setParent(this.selector, this);
 };
 MixinCall.prototype = new Node();
 MixinCall.prototype.type = "MixinCall";
@@ -7045,7 +7806,7 @@ MixinCall.prototype.eval = function (context) {
                 if ((count[defTrue] + count[defFalse]) > 1) {
                     throw { type: 'Runtime',
                         message: 'Ambiguous use of `default()` found when matching for `' + this.format(args) + '`',
-                        index: this.index, filename: this.currentFileInfo.filename };
+                        index: this.getIndex(), filename: this.fileInfo().filename };
                 }
             }
 
@@ -7063,7 +7824,7 @@ MixinCall.prototype.eval = function (context) {
                         this._setVisibilityToReplacement(newRules);
                         Array.prototype.push.apply(rules, newRules);
                     } catch (e) {
-                        throw { message: e.message, index: this.index, filename: this.currentFileInfo.filename, stack: e.stack };
+                        throw { message: e.message, index: this.getIndex(), filename: this.fileInfo().filename, stack: e.stack };
                     }
                 }
             }
@@ -7076,11 +7837,11 @@ MixinCall.prototype.eval = function (context) {
     if (isOneFound) {
         throw { type:    'Runtime',
             message: 'No matching definition was found for `' + this.format(args) + '`',
-            index:   this.index, filename: this.currentFileInfo.filename };
+            index:   this.getIndex(), filename: this.fileInfo().filename };
     } else {
         throw { type:    'Name',
             message: this.selector.toCSS().trim() + " is undefined",
-            index:   this.index, filename: this.currentFileInfo.filename };
+            index:   this.getIndex(), filename: this.fileInfo().filename };
     }
 };
 
@@ -7110,17 +7871,18 @@ MixinCall.prototype.format = function (args) {
 };
 module.exports = MixinCall;
 
-},{"../functions/default":20,"./mixin-definition":68,"./node":70,"./selector":77}],68:[function(require,module,exports){
+},{"../functions/default":24,"./mixin-definition":71,"./node":73,"./selector":79}],71:[function(require,module,exports){
 var Selector = require("./selector"),
     Element = require("./element"),
     Ruleset = require("./ruleset"),
-    Rule = require("./rule"),
+    Declaration = require("./declaration"),
     Expression = require("./expression"),
-    contexts = require("../contexts");
+    contexts = require("../contexts"),
+    utils = require("../utils");
 
 var Definition = function (name, params, rules, condition, variadic, frames, visibilityInfo) {
     this.name = name;
-    this.selectors = [new Selector([new Element(null, name, this.index, this.currentFileInfo)])];
+    this.selectors = [new Selector([new Element(null, name, this._index, this._fileInfo)])];
     this.params = params;
     this.condition = condition;
     this.variadic = variadic;
@@ -7155,10 +7917,10 @@ Definition.prototype.accept = function (visitor) {
     }
 };
 Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArguments) {
-    /*jshint boss:true */
+    /* jshint boss:true */
     var frame = new Ruleset(null, null),
         varargs, arg,
-        params = this.params.slice(0),
+        params = utils.copyArray(this.params),
         i, j, val, name, isNamedFound, argIndex, argsLength = 0;
 
     if (mixinEnv.frames && mixinEnv.frames[0] && mixinEnv.frames[0].functionRegistry) {
@@ -7167,7 +7929,7 @@ Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArgume
     mixinEnv = new contexts.Eval(mixinEnv, [frame].concat(mixinEnv.frames));
 
     if (args) {
-        args = args.slice(0);
+        args = utils.copyArray(args);
         argsLength = args.length;
 
         for (i = 0; i < argsLength; i++) {
@@ -7177,7 +7939,7 @@ Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArgume
                 for (j = 0; j < params.length; j++) {
                     if (!evaldArguments[j] && name === params[j].name) {
                         evaldArguments[j] = arg.value.eval(context);
-                        frame.prependRule(new Rule(name, arg.value.eval(context)));
+                        frame.prependRule(new Declaration(name, arg.value.eval(context)));
                         isNamedFound = true;
                         break;
                     }
@@ -7205,7 +7967,7 @@ Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArgume
                 for (j = argIndex; j < argsLength; j++) {
                     varargs.push(args[j].value.eval(context));
                 }
-                frame.prependRule(new Rule(name, new Expression(varargs).eval(context)));
+                frame.prependRule(new Declaration(name, new Expression(varargs).eval(context)));
             } else {
                 val = arg && arg.value;
                 if (val) {
@@ -7218,7 +7980,7 @@ Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArgume
                         ' (' + argsLength + ' for ' + this.arity + ')' };
                 }
 
-                frame.prependRule(new Rule(name, val));
+                frame.prependRule(new Declaration(name, val));
                 evaldArguments[i] = val;
             }
         }
@@ -7245,7 +8007,7 @@ Definition.prototype.makeImportant = function() {
     return result;
 };
 Definition.prototype.eval = function (context) {
-    return new Definition(this.name, this.params, this.rules, this.condition, this.variadic, this.frames || context.frames.slice(0));
+    return new Definition(this.name, this.params, this.rules, this.condition, this.variadic, this.frames || utils.copyArray(context.frames));
 };
 Definition.prototype.evalCall = function (context, args, important) {
     var _arguments = [],
@@ -7253,9 +8015,9 @@ Definition.prototype.evalCall = function (context, args, important) {
         frame = this.evalParams(context, new contexts.Eval(context, mixinFrames), args, _arguments),
         rules, ruleset;
 
-    frame.prependRule(new Rule('@arguments', new Expression(_arguments).eval(context)));
+    frame.prependRule(new Declaration('@arguments', new Expression(_arguments).eval(context)));
 
-    rules = this.rules.slice(0);
+    rules = utils.copyArray(this.rules);
 
     ruleset = new Ruleset(null, rules);
     ruleset.originalRuleset = this;
@@ -7268,7 +8030,7 @@ Definition.prototype.evalCall = function (context, args, important) {
 Definition.prototype.matchCondition = function (args, context) {
     if (this.condition && !this.condition.eval(
         new contexts.Eval(context,
-            [this.evalParams(context, /* the parameter variables*/
+            [this.evalParams(context, /* the parameter variables */
                 new contexts.Eval(context, this.frames ? this.frames.concat(context.frames) : context.frames), args, [])]
             .concat(this.frames || []) // the parent namespace/mixin frames
             .concat(context.frames)))) { // the current environment frames
@@ -7286,7 +8048,7 @@ Definition.prototype.matchArgs = function (args, context) {
         }
     }, 0);
 
-    if (! this.variadic) {
+    if (!this.variadic) {
         if (requiredArgsCnt < this.required) {
             return false;
         }
@@ -7313,7 +8075,7 @@ Definition.prototype.matchArgs = function (args, context) {
 };
 module.exports = Definition;
 
-},{"../contexts":11,"./element":58,"./expression":59,"./rule":74,"./ruleset":76,"./selector":77}],69:[function(require,module,exports){
+},{"../contexts":12,"../utils":86,"./declaration":58,"./element":61,"./expression":62,"./ruleset":78,"./selector":79}],72:[function(require,module,exports){
 var Node = require("./node"),
     Operation = require("./operation"),
     Dimension = require("./dimension");
@@ -7335,9 +8097,43 @@ Negative.prototype.eval = function (context) {
 };
 module.exports = Negative;
 
-},{"./dimension":56,"./node":70,"./operation":71}],70:[function(require,module,exports){
+},{"./dimension":60,"./node":73,"./operation":74}],73:[function(require,module,exports){
 var Node = function() {
+    this.parent = null;
+    this.visibilityBlocks = undefined;
+    this.nodeVisible = undefined;
+    this.rootNode = null;
+    this.parsed = null;
+
+    var self = this;
+    Object.defineProperty(this, "currentFileInfo", {
+        get: function() { return self.fileInfo(); }
+    });
+    Object.defineProperty(this, "index", {
+        get: function() { return self.getIndex(); }
+    });
+
+};
+Node.prototype.setParent = function(nodes, parent) {
+    function set(node) {
+        if (node && node instanceof Node) {
+            node.parent = parent;
+        }
+    }
+    if (Array.isArray(nodes)) {
+        nodes.forEach(set);
+    }
+    else {
+        set(nodes);
+    }
+};
+Node.prototype.getIndex = function() {
+    return this._index || (this.parent && this.parent.getIndex()) || 0;
 };
+Node.prototype.fileInfo = function() {
+    return this._fileInfo || (this.parent && this.parent.fileInfo()) || {};
+};
+Node.prototype.isRulesetLike = function() { return false; };
 Node.prototype.toCSS = function (context) {
     var strs = [];
     this.genCSS(context, {
@@ -7367,8 +8163,8 @@ Node.prototype._operate = function (context, op, a, b) {
 };
 Node.prototype.fround = function(context, value) {
     var precision = context && context.numPrecision;
-    //add "epsilon" to ensure numbers like 1.000000005 (represented as 1.000000004999....) are properly rounded...
-    return (precision == null) ? value : Number((value + 2e-16).toFixed(precision));
+    // add "epsilon" to ensure numbers like 1.000000005 (represented as 1.000000004999...) are properly rounded:
+    return (precision) ? Number((value + 2e-16).toFixed(precision)) : value;
 };
 Node.compare = function (a, b) {
     /* returns:
@@ -7428,13 +8224,13 @@ Node.prototype.removeVisibilityBlock = function () {
     }
     this.visibilityBlocks = this.visibilityBlocks - 1;
 };
-//Turns on node visibility - if called node will be shown in output regardless
-//of whether it comes from import by reference or not
+// Turns on node visibility - if called node will be shown in output regardless
+// of whether it comes from import by reference or not
 Node.prototype.ensureVisibility = function () {
     this.nodeVisible = true;
 };
-//Turns off node visibility - if called node will NOT be shown in output regardless
-//of whether it comes from import by reference or not
+// Turns off node visibility - if called node will NOT be shown in output regardless
+// of whether it comes from import by reference or not
 Node.prototype.ensureInvisibility = function () {
     this.nodeVisible = false;
 };
@@ -7460,7 +8256,7 @@ Node.prototype.copyVisibilityInfo = function(info) {
 };
 module.exports = Node;
 
-},{}],71:[function(require,module,exports){
+},{}],74:[function(require,module,exports){
 var Node = require("./node"),
     Color = require("./color"),
     Dimension = require("./dimension");
@@ -7488,7 +8284,7 @@ Operation.prototype.eval = function (context) {
         }
         if (!a.operate) {
             throw { type: "Operation",
-                    message: "Operation on an invalid type" };
+                message: "Operation on an invalid type" };
         }
 
         return a.operate(context, this.op, b);
@@ -7510,7 +8306,7 @@ Operation.prototype.genCSS = function (context, output) {
 
 module.exports = Operation;
 
-},{"./color":50,"./dimension":56,"./node":70}],72:[function(require,module,exports){
+},{"./color":53,"./dimension":60,"./node":73}],75:[function(require,module,exports){
 var Node = require("./node");
 
 var Paren = function (node) {
@@ -7523,28 +8319,100 @@ Paren.prototype.genCSS = function (context, output) {
     this.value.genCSS(context, output);
     output.add(')');
 };
-Paren.prototype.eval = function (context) {
-    return new Paren(this.value.eval(context));
+Paren.prototype.eval = function (context) {
+    return new Paren(this.value.eval(context));
+};
+module.exports = Paren;
+
+},{"./node":73}],76:[function(require,module,exports){
+var Node = require("./node"),
+    Declaration = require("./declaration");
+
+var Property = function (name, index, currentFileInfo) {
+    this.name = name;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
+};
+Property.prototype = new Node();
+Property.prototype.type = "Property";
+Property.prototype.eval = function (context) {
+    var property, name = this.name;
+    // TODO: shorten this reference
+    var mergeRules = context.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;
+
+    if (this.evaluating) {
+        throw { type: 'Name',
+            message: "Recursive property reference for " + name,
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
+    }
+
+    this.evaluating = true;
+
+    property = this.find(context.frames, function (frame) {
+
+        var v, vArr = frame.property(name);
+        if (vArr) {
+            for (var i = 0; i < vArr.length; i++) {
+                v = vArr[i];
+
+                vArr[i] = new Declaration(v.name,
+                    v.value,
+                    v.important,
+                    v.merge,
+                    v.index,
+                    v.currentFileInfo,
+                    v.inline,
+                    v.variable
+                );
+            }
+            mergeRules(vArr);
+
+            v = vArr[vArr.length - 1];
+            if (v.important) {
+                var importantScope = context.importantScope[context.importantScope.length - 1];
+                importantScope.important = v.important;
+            }
+            v = v.value.eval(context);
+            return v;
+        }
+    });
+    if (property) {
+        this.evaluating = false;
+        return property;
+    } else {
+        throw { type: 'Name',
+            message: "Property '" + name + "' is undefined",
+            filename: this.currentFileInfo.filename,
+            index: this.index };
+    }
+};
+Property.prototype.find = function (obj, fun) {
+    for (var i = 0, r; i < obj.length; i++) {
+        r = fun.call(obj, obj[i]);
+        if (r) { return r; }
+    }
+    return null;
 };
-module.exports = Paren;
+module.exports = Property;
 
-},{"./node":70}],73:[function(require,module,exports){
+},{"./declaration":58,"./node":73}],77:[function(require,module,exports){
 var Node = require("./node"),
-    JsEvalNode = require("./js-eval-node"),
-    Variable = require("./variable");
+    Variable = require("./variable"),
+    Property = require("./property");
 
 var Quoted = function (str, content, escaped, index, currentFileInfo) {
     this.escaped = (escaped == null) ? true : escaped;
     this.value = content || '';
     this.quote = str.charAt(0);
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
 };
-Quoted.prototype = new JsEvalNode();
+Quoted.prototype = new Node();
 Quoted.prototype.type = "Quoted";
 Quoted.prototype.genCSS = function (context, output) {
     if (!this.escaped) {
-        output.add(this.quote, this.currentFileInfo, this.index);
+        output.add(this.quote, this.fileInfo(), this.getIndex());
     }
     output.add(this.value);
     if (!this.escaped) {
@@ -7552,15 +8420,16 @@ Quoted.prototype.genCSS = function (context, output) {
     }
 };
 Quoted.prototype.containsVariables = function() {
-    return this.value.match(/(`([^`]+)`)|@\{([\w-]+)\}/);
+    return this.value.match(/@\{([\w-]+)\}/);
 };
 Quoted.prototype.eval = function (context) {
     var that = this, value = this.value;
-    var javascriptReplacement = function (_, exp) {
-        return String(that.evaluateJavaScript(exp, context));
+    var variableReplacement = function (_, name) {
+        var v = new Variable('@' + name, that.getIndex(), that.fileInfo()).eval(context, true);
+        return (v instanceof Quoted) ? v.value : v.toCSS();
     };
-    var interpolationReplacement = function (_, name) {
-        var v = new Variable('@' + name, that.index, that.currentFileInfo).eval(context, true);
+    var propertyReplacement = function (_, name) {
+        var v = new Property('$' + name, that.getIndex(), that.fileInfo()).eval(context, true);
         return (v instanceof Quoted) ? v.value : v.toCSS();
     };
     function iterativeReplace(value, regexp, replacementFnc) {
@@ -7571,9 +8440,9 @@ Quoted.prototype.eval = function (context) {
         } while (value !== evaluatedValue);
         return evaluatedValue;
     }
-    value = iterativeReplace(value, /`([^`]+)`/g, javascriptReplacement);
-    value = iterativeReplace(value, /@\{([\w-]+)\}/g, interpolationReplacement);
-    return new Quoted(this.quote + value + this.quote, value, this.escaped, this.index, this.currentFileInfo);
+    value = iterativeReplace(value, /@\{([\w-]+)\}/g, variableReplacement);
+    value = iterativeReplace(value, /\$\{([\w-]+)\}/g, propertyReplacement);
+    return new Quoted(this.quote + value + this.quote, value, this.escaped, this.getIndex(), this.fileInfo());
 };
 Quoted.prototype.compare = function (other) {
     // when comparing quoted strings allow the quote to differ
@@ -7585,142 +8454,39 @@ Quoted.prototype.compare = function (other) {
 };
 module.exports = Quoted;
 
-},{"./js-eval-node":64,"./node":70,"./variable":82}],74:[function(require,module,exports){
-var Node = require("./node"),
-    Value = require("./value"),
-    Keyword = require("./keyword");
-
-var Rule = function (name, value, important, merge, index, currentFileInfo, inline, variable) {
-    this.name = name;
-    this.value = (value instanceof Node) ? value : new Value([value]); //value instanceof tree.Value || value instanceof tree.Ruleset ??
-    this.important = important ? ' ' + important.trim() : '';
-    this.merge = merge;
-    this.index = index;
-    this.currentFileInfo = currentFileInfo;
-    this.inline = inline || false;
-    this.variable = (variable !== undefined) ? variable
-        : (name.charAt && (name.charAt(0) === '@'));
-    this.allowRoot = true;
-};
-
-function evalName(context, name) {
-    var value = "", i, n = name.length,
-        output = {add: function (s) {value += s;}};
-    for (i = 0; i < n; i++) {
-        name[i].eval(context).genCSS(context, output);
-    }
-    return value;
-}
-
-Rule.prototype = new Node();
-Rule.prototype.type = "Rule";
-Rule.prototype.genCSS = function (context, output) {
-    output.add(this.name + (context.compress ? ':' : ': '), this.currentFileInfo, this.index);
-    try {
-        this.value.genCSS(context, output);
-    }
-    catch(e) {
-        e.index = this.index;
-        e.filename = this.currentFileInfo.filename;
-        throw e;
-    }
-    output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? "" : ";"), this.currentFileInfo, this.index);
-};
-Rule.prototype.eval = function (context) {
-    var strictMathBypass = false, name = this.name, evaldValue, variable = this.variable;
-    if (typeof name !== "string") {
-        // expand 'primitive' name directly to get
-        // things faster (~10% for benchmark.less):
-        name = (name.length === 1) && (name[0] instanceof Keyword) ?
-                name[0].value : evalName(context, name);
-        variable = false; // never treat expanded interpolation as new variable name
-    }
-    if (name === "font" && !context.strictMath) {
-        strictMathBypass = true;
-        context.strictMath = true;
-    }
-    try {
-        context.importantScope.push({});
-        evaldValue = this.value.eval(context);
-
-        if (!this.variable && evaldValue.type === "DetachedRuleset") {
-            throw { message: "Rulesets cannot be evaluated on a property.",
-                    index: this.index, filename: this.currentFileInfo.filename };
-        }
-        var important = this.important,
-            importantResult = context.importantScope.pop();
-        if (!important && importantResult.important) {
-            important = importantResult.important;
-        }
-
-        return new Rule(name,
-                          evaldValue,
-                          important,
-                          this.merge,
-                          this.index, this.currentFileInfo, this.inline,
-                              variable);
-    }
-    catch(e) {
-        if (typeof e.index !== 'number') {
-            e.index = this.index;
-            e.filename = this.currentFileInfo.filename;
-        }
-        throw e;
-    }
-    finally {
-        if (strictMathBypass) {
-            context.strictMath = false;
-        }
-    }
-};
-Rule.prototype.makeImportant = function () {
-    return new Rule(this.name,
-                          this.value,
-                          "!important",
-                          this.merge,
-                          this.index, this.currentFileInfo, this.inline);
-};
-
-module.exports = Rule;
-},{"./keyword":65,"./node":70,"./value":81}],75:[function(require,module,exports){
+},{"./node":73,"./property":76,"./variable":85}],78:[function(require,module,exports){
 var Node = require("./node"),
-    Variable = require("./variable");
-
-var RulesetCall = function (variable) {
-    this.variable = variable;
-    this.allowRoot = true;
-};
-RulesetCall.prototype = new Node();
-RulesetCall.prototype.type = "RulesetCall";
-RulesetCall.prototype.eval = function (context) {
-    var detachedRuleset = new Variable(this.variable).eval(context);
-    return detachedRuleset.callEval(context);
-};
-module.exports = RulesetCall;
-
-},{"./node":70,"./variable":82}],76:[function(require,module,exports){
-var Node = require("./node"),
-    Rule = require("./rule"),
+    Declaration = require("./declaration"),
+    Keyword = require("./keyword"),
+    Comment = require("./comment"),
+    Paren = require("./paren"),
     Selector = require("./selector"),
     Element = require("./element"),
-    Paren = require("./paren"),
+    Anonymous = require("./anonymous"),
     contexts = require("../contexts"),
     globalFunctionRegistry = require("../functions/function-registry"),
     defaultFunc = require("../functions/default"),
-    getDebugInfo = require("./debug-info");
+    getDebugInfo = require("./debug-info"),
+    utils = require("../utils");
 
 var Ruleset = function (selectors, rules, strictImports, visibilityInfo) {
     this.selectors = selectors;
     this.rules = rules;
     this._lookups = {};
+    this._variables = null;
+    this._properties = null;
     this.strictImports = strictImports;
     this.copyVisibilityInfo(visibilityInfo);
     this.allowRoot = true;
+
+    this.setParent(this.selectors, this);
+    this.setParent(this.rules, this);
+
 };
 Ruleset.prototype = new Node();
 Ruleset.prototype.type = "Ruleset";
 Ruleset.prototype.isRuleset = true;
-Ruleset.prototype.isRulesetLike = true;
+Ruleset.prototype.isRulesetLike = function() { return true; };
 Ruleset.prototype.accept = function (visitor) {
     if (this.paths) {
         this.paths = visitor.visitArray(this.paths, true);
@@ -7736,14 +8502,14 @@ Ruleset.prototype.eval = function (context) {
         selCnt, selector, i, hasOnePassingSelector = false;
 
     if (thisSelectors && (selCnt = thisSelectors.length)) {
-        selectors = [];
+        selectors = new Array(selCnt);
         defaultFunc.error({
             type: "Syntax",
             message: "it is currently only allowed in parametric mixin guards,"
         });
         for (i = 0; i < selCnt; i++) {
             selector = thisSelectors[i].eval(context);
-            selectors.push(selector);
+            selectors[i] = selector;
             if (selector.evaldCondition) {
                 hasOnePassingSelector = true;
             }
@@ -7753,7 +8519,7 @@ Ruleset.prototype.eval = function (context) {
         hasOnePassingSelector = true;
     }
 
-    var rules = this.rules ? this.rules.slice(0) : null,
+    var rules = this.rules ? utils.copyArray(this.rules) : null,
         ruleset = new Ruleset(selectors, rules, this.strictImports, this.visibilityInfo()),
         rule, subRule;
 
@@ -7801,21 +8567,21 @@ Ruleset.prototype.eval = function (context) {
 
     // Store the frames around mixin definitions,
     // so they can be evaluated like closures when the time comes.
-    var rsRules = ruleset.rules, rsRuleCnt = rsRules ? rsRules.length : 0;
-    for (i = 0; i < rsRuleCnt; i++) {
-        if (rsRules[i].evalFirst) {
-            rsRules[i] = rsRules[i].eval(context);
+    var rsRules = ruleset.rules;
+    for (i = 0; (rule = rsRules[i]); i++) {
+        if (rule.evalFirst) {
+            rsRules[i] = rule.eval(context);
         }
     }
 
     var mediaBlockCount = (context.mediaBlocks && context.mediaBlocks.length) || 0;
 
     // Evaluate mixin calls.
-    for (i = 0; i < rsRuleCnt; i++) {
-        if (rsRules[i].type === "MixinCall") {
-            /*jshint loopfunc:true */
-            rules = rsRules[i].eval(context).filter(function(r) {
-                if ((r instanceof Rule) && r.variable) {
+    for (i = 0; (rule = rsRules[i]); i++) {
+        if (rule.type === "MixinCall") {
+            /* jshint loopfunc:true */
+            rules = rule.eval(context).filter(function(r) {
+                if ((r instanceof Declaration) && r.variable) {
                     // do not pollute the scope if the variable is
                     // already there. consider returning false here
                     // but we need a way to "return" variable from mixins
@@ -7824,47 +8590,44 @@ Ruleset.prototype.eval = function (context) {
                 return true;
             });
             rsRules.splice.apply(rsRules, [i, 1].concat(rules));
-            rsRuleCnt += rules.length - 1;
             i += rules.length - 1;
             ruleset.resetCache();
-        } else if (rsRules[i].type === "RulesetCall") {
-            /*jshint loopfunc:true */
-            rules = rsRules[i].eval(context).rules.filter(function(r) {
-                if ((r instanceof Rule) && r.variable) {
+        } else if (rule.type ===  "VariableCall") {
+            /* jshint loopfunc:true */
+            rules = rule.eval(context).rules.filter(function(r) {
+                if ((r instanceof Declaration) && r.variable) {
                     // do not pollute the scope at all
                     return false;
                 }
                 return true;
             });
             rsRules.splice.apply(rsRules, [i, 1].concat(rules));
-            rsRuleCnt += rules.length - 1;
             i += rules.length - 1;
             ruleset.resetCache();
         }
     }
 
     // Evaluate everything else
-    for (i = 0; i < rsRules.length; i++) {
-        rule = rsRules[i];
+    for (i = 0; (rule = rsRules[i]); i++) {
         if (!rule.evalFirst) {
             rsRules[i] = rule = rule.eval ? rule.eval(context) : rule;
         }
     }
 
     // Evaluate everything else
-    for (i = 0; i < rsRules.length; i++) {
-        rule = rsRules[i];
+    for (i = 0; (rule = rsRules[i]); i++) {
         // for rulesets, check if it is a css guard and can be removed
         if (rule instanceof Ruleset && rule.selectors && rule.selectors.length === 1) {
             // check if it can be folded in (e.g. & where)
             if (rule.selectors[0].isJustParentSelector()) {
                 rsRules.splice(i--, 1);
 
-                for (var j = 0; j < rule.rules.length; j++) {
-                    subRule = rule.rules[j];
-                    subRule.copyVisibilityInfo(rule.visibilityInfo());
-                    if (!(subRule instanceof Rule) || !subRule.variable) {
-                        rsRules.splice(++i, 0, subRule);
+                for (var j = 0; (subRule = rule.rules[j]); j++) {
+                    if (subRule instanceof Node) {
+                        subRule.copyVisibilityInfo(rule.visibilityInfo());
+                        if (!(subRule instanceof Declaration) || !subRule.variable) {
+                            rsRules.splice(++i, 0, subRule);
+                        }
                     }
                 }
             }
@@ -7892,7 +8655,7 @@ Ruleset.prototype.evalImports = function(context) {
             importRules = rules[i].eval(context);
             if (importRules && (importRules.length || importRules.length === 0)) {
                 rules.splice.apply(rules, [i, 1].concat(importRules));
-                i+= importRules.length - 1;
+                i += importRules.length - 1;
             } else {
                 rules.splice(i, 1, importRules);
             }
@@ -7931,12 +8694,13 @@ Ruleset.prototype.matchCondition = function (args, context) {
 Ruleset.prototype.resetCache = function () {
     this._rulesets = null;
     this._variables = null;
+    this._properties = null;
     this._lookups = {};
 };
 Ruleset.prototype.variables = function () {
     if (!this._variables) {
         this._variables = !this.rules ? {} : this.rules.reduce(function (hash, r) {
-            if (r instanceof Rule && r.variable === true) {
+            if (r instanceof Declaration && r.variable === true) {
                 hash[r.name] = r;
             }
             // when evaluating variables in an import statement, imports have not been eval'd
@@ -7955,17 +8719,81 @@ Ruleset.prototype.variables = function () {
     }
     return this._variables;
 };
+Ruleset.prototype.properties = function () {
+    if (!this._properties) {
+        this._properties = !this.rules ? {} : this.rules.reduce(function (hash, r) {
+            if (r instanceof Declaration && r.variable !== true) {
+                var name = (r.name.length === 1) && (r.name[0] instanceof Keyword) ?
+                    r.name[0].value : r.name;
+                // Properties don't overwrite as they can merge
+                if (!hash['$' + name]) {
+                    hash['$' + name] = [ r ];
+                }
+                else {
+                    hash['$' + name].push(r);
+                }
+            }
+            return hash;
+        }, {});
+    }
+    return this._properties;
+};
 Ruleset.prototype.variable = function (name) {
-    return this.variables()[name];
+    var decl = this.variables()[name];
+    if (decl) {
+        return this.parseValue(decl);
+    }
+};
+Ruleset.prototype.property = function (name) {
+    var decl = this.properties()[name];
+    if (decl) {
+        return this.parseValue(decl);
+    }
+};
+Ruleset.prototype.parseValue = function(toParse) {
+    var self = this;
+    function transformDeclaration(decl) {
+        if (decl.value instanceof Anonymous && !decl.parsed) {
+            this.parse.parseNode(
+                decl.value.value, 
+                ["value", "important"], 
+                decl.value.getIndex(), 
+                decl.fileInfo(), 
+                function(err, result) {
+                    if (err) {
+                        decl.parsed = true;
+                    }
+                    if (result) {
+                        decl.value = result[0];
+                        decl.important = result[1] || '';
+                        decl.parsed = true;
+                    }
+                });
+
+            return decl;
+        }
+        else {
+            return decl;
+        }
+    }
+    if (!Array.isArray(toParse)) {
+        return transformDeclaration.call(self, toParse);
+    }
+    else {
+        var nodes = [];
+        toParse.forEach(function(n) {
+            nodes.push(transformDeclaration.call(self, n));
+        });
+        return nodes;
+    }
 };
 Ruleset.prototype.rulesets = function () {
     if (!this.rules) { return []; }
 
-    var filtRules = [], rules = this.rules, cnt = rules.length,
+    var filtRules = [], rules = this.rules,
         i, rule;
 
-    for (i = 0; i < cnt; i++) {
-        rule = rules[i];
+    for (i = 0; (rule = rules[i]); i++) {
         if (rule.isRuleset) {
             filtRules.push(rule);
         }
@@ -7980,6 +8808,7 @@ Ruleset.prototype.prependRule = function (rule) {
     } else {
         this.rules = [ rule ];
     }
+    this.setParent(rule, this);
 };
 Ruleset.prototype.find = function (selector, self, filter) {
     self = self || this;
@@ -8030,25 +8859,10 @@ Ruleset.prototype.genCSS = function (context, output) {
         tabSetStr = context.compress ? '' : Array(context.tabLevel).join("  "),
         sep;
 
-    function isRulesetLikeNode(rule) {
-        // if it has nested rules, then it should be treated like a ruleset
-        // medias and comments do not have nested rules, but should be treated like rulesets anyway
-        // some directives and anonymous nodes are ruleset like, others are not
-        if (typeof rule.isRulesetLike === "boolean") {
-            return rule.isRulesetLike;
-        } else if (typeof rule.isRulesetLike === "function") {
-            return rule.isRulesetLike();
-        }
-
-        //anything else is assumed to be a rule
-        return false;
-    }
-
     var charsetNodeIndex = 0;
     var importNodeIndex = 0;
-    for (i = 0; i < this.rules.length; i++) {
-        rule = this.rules[i];
-        if (rule.type === "Comment") {
+    for (i = 0; (rule = this.rules[i]); i++) {
+        if (rule instanceof Comment) {
             if (importNodeIndex === i) {
                 importNodeIndex++;
             }
@@ -8099,15 +8913,14 @@ Ruleset.prototype.genCSS = function (context, output) {
     }
 
     // Compile rules and rulesets
-    for (i = 0; i < ruleNodes.length; i++) {
-        rule = ruleNodes[i];
+    for (i = 0; (rule = ruleNodes[i]); i++) {
 
         if (i + 1 === ruleNodes.length) {
             context.lastRule = true;
         }
 
         var currentLastRule = context.lastRule;
-        if (isRulesetLikeNode(rule)) {
+        if (rule.isRulesetLike(rule)) {
             context.lastRule = false;
         }
 
@@ -8119,7 +8932,7 @@ Ruleset.prototype.genCSS = function (context, output) {
 
         context.lastRule = currentLastRule;
 
-        if (!context.lastRule) {
+        if (!context.lastRule && rule.isVisible()) {
             output.add(context.compress ? '' : ('\n' + tabRuleStr));
         } else {
             context.lastRule = false;
@@ -8149,9 +8962,9 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
         if (elementsToPak.length === 0) {
             replacementParen = new Paren(elementsToPak[0]);
         } else {
-            var insideParent = [];
+            var insideParent = new Array(elementsToPak.length);
             for (j = 0; j < elementsToPak.length; j++) {
-                insideParent.push(new Element(null, elementsToPak[j], originalElement.index, originalElement.currentFileInfo));
+                insideParent[j] = new Element(null, elementsToPak[j], originalElement._index, originalElement._fileInfo);
             }
             replacementParen = new Paren(new Selector(insideParent));
         }
@@ -8160,7 +8973,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
 
     function createSelector(containedElement, originalElement) {
         var element, selector;
-        element = new Element(null, containedElement, originalElement.index, originalElement.currentFileInfo);
+        element = new Element(null, containedElement, originalElement._index, originalElement._fileInfo);
         selector = new Selector([element]);
         return selector;
     }
@@ -8173,12 +8986,12 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
         // our new selector path
         newSelectorPath = [];
 
-        //construct the joined selector - if & is the first thing this will be empty,
+        // construct the joined selector - if & is the first thing this will be empty,
         // if not newJoinedSelector will be the last set of elements in the selector
         if (beginningPath.length > 0) {
-            newSelectorPath = beginningPath.slice(0);
+            newSelectorPath = utils.copyArray(beginningPath);
             lastSelector = newSelectorPath.pop();
-            newJoinedSelector = originalSelector.createDerived(lastSelector.elements.slice(0));
+            newJoinedSelector = originalSelector.createDerived(utils.copyArray(lastSelector.elements));
         }
         else {
             newJoinedSelector = originalSelector.createDerived([]);
@@ -8194,7 +9007,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
                 combinator = parentEl.combinator;
             }
             // join the elements so far with the first part of the parent
-            newJoinedSelector.elements.push(new Element(combinator, parentEl.value, replacedElement.index, replacedElement.currentFileInfo));
+            newJoinedSelector.elements.push(new Element(combinator, parentEl.value, replacedElement._index, replacedElement._fileInfo));
             newJoinedSelector.elements = newJoinedSelector.elements.concat(addPath[0].elements.slice(1));
         }
 
@@ -8203,7 +9016,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
             newSelectorPath.push(newJoinedSelector);
         }
 
-        //put together the parent selectors after the join (e.g. the rest of the parent)
+        // put together the parent selectors after the join (e.g. the rest of the parent)
         if (addPath.length > 1) {
             var restOfPath = addPath.slice(1);
             restOfPath = restOfPath.map(function (selector) {
@@ -8237,9 +9050,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
             return;
         }
 
-        for (i = 0; i < selectors.length; i++) {
-            sel = selectors[i];
-
+        for (i = 0; (sel = selectors[i]); i++) {
             // if the previous thing in sel is a parent this needs to join on to it
             if (sel.length > 0) {
                 sel[sel.length - 1] = sel[sel.length - 1].createDerived(sel[sel.length - 1].elements.concat(elements));
@@ -8267,12 +9078,12 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
         var i, j, k, currentElements, newSelectors, selectorsMultiplied, sel, el, hadParentSelector = false, length, lastSelector;
         function findNestedSelector(element) {
             var maybeSelector;
-            if (element.value.type !== 'Paren') {
+            if (!(element.value instanceof Paren)) {
                 return null;
             }
 
             maybeSelector = element.value.value;
-            if (maybeSelector.type !== 'Selector') {
+            if (!(maybeSelector instanceof Selector)) {
                 return null;
             }
 
@@ -8288,8 +9099,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
             []
         ];
 
-        for (i = 0; i < inSelector.elements.length; i++) {
-            el = inSelector.elements[i];
+        for (i = 0; (el = inSelector.elements[i]); i++) {
             // non parent reference elements just get added
             if (el.value !== "&") {
                 var nestedSelector = findNestedSelector(el);
@@ -8301,7 +9111,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
                     var nestedPaths = [], replaced, replacedNewSelectors = [];
                     replaced = replaceParentSelector(nestedPaths, context, nestedSelector);
                     hadParentSelector = hadParentSelector || replaced;
-                    //the nestedPaths array should have only one member - replaceParentSelector does not multiply selectors
+                    // the nestedPaths array should have only one member - replaceParentSelector does not multiply selectors
                     for (k = 0; k < nestedPaths.length; k++) {
                         var replacementSelector = createSelector(createParenthesis(nestedPaths[k], el), el);
                         addAllReplacementsIntoPath(newSelectors, [replacementSelector], el, inSelector, replacedNewSelectors);
@@ -8331,7 +9141,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
                         // the combinator used on el should now be applied to the next element instead so that
                         // it is not lost
                         if (sel.length > 0) {
-                            sel[0].elements.push(new Element(el.combinator, '', el.index, el.currentFileInfo));
+                            sel[0].elements.push(new Element(el.combinator, '', el._index, el._fileInfo));
                         }
                         selectorsMultiplied.push(sel);
                     }
@@ -8363,7 +9173,6 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
                 paths.push(newSelectors[i]);
                 lastSelector = newSelectors[i][length - 1];
                 newSelectors[i][length - 1] = lastSelector.createDerived(lastSelector.elements, inSelector.extendList);
-                //newSelectors[i][length - 1].copyVisibilityInfo(inSelector.visibilityInfo());
             }
         }
 
@@ -8386,12 +9195,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
         if (context.length > 0) {
             newPaths = [];
             for (i = 0; i < context.length; i++) {
-                //var concatenated = [];
-                //context[i].forEach(function(entry) {
-                //    var newEntry = entry.createDerived(entry.elements, entry.extendList, entry.evaldCondition);
-                //    newEntry.copyVisibilityInfo(selector.visibilityInfo());
-                //    concatenated.push(newEntry);
-                //}, this);
+
                 var concatenated = context[i].map(deriveSelector.bind(this, selector.visibilityInfo()));
 
                 concatenated.push(selector);
@@ -8410,19 +9214,21 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
 };
 module.exports = Ruleset;
 
-},{"../contexts":11,"../functions/default":20,"../functions/function-registry":22,"./debug-info":54,"./element":58,"./node":70,"./paren":72,"./rule":74,"./selector":77}],77:[function(require,module,exports){
+},{"../contexts":12,"../functions/default":24,"../functions/function-registry":26,"../utils":86,"./anonymous":48,"./comment":55,"./debug-info":57,"./declaration":58,"./element":61,"./keyword":68,"./node":73,"./paren":75,"./selector":79}],79:[function(require,module,exports){
 var Node = require("./node"),
-    Element = require("./element");
+    Element = require("./element"),
+    LessError = require("../less-error");
 
 var Selector = function (elements, extendList, condition, index, currentFileInfo, visibilityInfo) {
-    this.elements = elements;
     this.extendList = extendList;
     this.condition = condition;
-    this.currentFileInfo = currentFileInfo || {};
-    if (!condition) {
-        this.evaldCondition = true;
-    }
+    this.evaldCondition = !condition;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
+    this.elements = this.getElements(elements);
+    this.mixinElements_ = undefined;
     this.copyVisibilityInfo(visibilityInfo);
+    this.setParent(this.elements, this);
 };
 Selector.prototype = new Node();
 Selector.prototype.type = "Selector";
@@ -8438,16 +9244,35 @@ Selector.prototype.accept = function (visitor) {
     }
 };
 Selector.prototype.createDerived = function(elements, extendList, evaldCondition) {
-    var info = this.visibilityInfo();
-    evaldCondition = (evaldCondition != null) ? evaldCondition : this.evaldCondition;
-    var newSelector = new Selector(elements, extendList || this.extendList, null, this.index, this.currentFileInfo, info);
-    newSelector.evaldCondition = evaldCondition;
+    elements = this.getElements(elements);
+    var newSelector = new Selector(elements, extendList || this.extendList,
+        null, this.getIndex(), this.fileInfo(), this.visibilityInfo());
+    newSelector.evaldCondition = (evaldCondition != null) ? evaldCondition : this.evaldCondition;
     newSelector.mediaEmpty = this.mediaEmpty;
     return newSelector;
 };
+Selector.prototype.getElements = function(els) {
+    if (typeof els === "string") {
+        this.parse.parseNode(
+            els, 
+            ["selector"],
+            this._index, 
+            this._fileInfo, 
+            function(err, result) {
+                if (err) {
+                    throw new LessError({
+                        index: err.index,
+                        message: err.message
+                    }, this.parse.imports, this._fileInfo.filename);
+                }
+                els = result[0].elements;
+            });
+    }
+    return els;
+};
 Selector.prototype.createEmptySelectors = function() {
-    var el = new Element('', '&', this.index, this.currentFileInfo),
-        sels = [new Selector([el], null, null, this.index, this.currentFileInfo)];
+    var el = new Element('', '&', this._index, this._fileInfo),
+        sels = [new Selector([el], null, null, this._index, this._fileInfo)];
     sels[0].mediaEmpty = true;
     return sels;
 };
@@ -8456,14 +9281,13 @@ Selector.prototype.match = function (other) {
         len = elements.length,
         olen, i;
 
-    other.CacheElements();
-
-    olen = other._elements.length;
+    other = other.mixinElements();
+    olen = other.length;
     if (olen === 0 || len < olen) {
         return 0;
     } else {
         for (i = 0; i < olen; i++) {
-            if (elements[i].value !== other._elements[i]) {
+            if (elements[i].value !== other[i]) {
                 return 0;
             }
         }
@@ -8471,9 +9295,9 @@ Selector.prototype.match = function (other) {
 
     return olen; // return number of matched elements
 };
-Selector.prototype.CacheElements = function() {
-    if (this._elements) {
-        return;
+Selector.prototype.mixinElements = function() {
+    if (this.mixinElements_) {
+        return this.mixinElements_;
     }
 
     var elements = this.elements.map( function(v) {
@@ -8488,7 +9312,7 @@ Selector.prototype.CacheElements = function() {
         elements = [];
     }
 
-    this._elements = elements;
+    return (this.mixinElements_ = elements);
 };
 Selector.prototype.isJustParentSelector = function() {
     return !this.mediaEmpty &&
@@ -8508,14 +9332,11 @@ Selector.prototype.eval = function (context) {
 Selector.prototype.genCSS = function (context, output) {
     var i, element;
     if ((!context || !context.firstSelector) && this.elements[0].combinator.value === "") {
-        output.add(' ', this.currentFileInfo, this.index);
+        output.add(' ', this.fileInfo(), this.getIndex());
     }
-    if (!this._css) {
-        //TODO caching? speed comparison?
-        for (i = 0; i < this.elements.length; i++) {
-            element = this.elements[i];
-            element.genCSS(context, output);
-        }
+    for (i = 0; i < this.elements.length; i++) {
+        element = this.elements[i];
+        element.genCSS(context, output);
     }
 };
 Selector.prototype.getIsOutput = function() {
@@ -8523,7 +9344,7 @@ Selector.prototype.getIsOutput = function() {
 };
 module.exports = Selector;
 
-},{"./element":58,"./node":70}],78:[function(require,module,exports){
+},{"../less-error":36,"./element":61,"./node":73}],80:[function(require,module,exports){
 var Node = require("./node");
 
 var UnicodeDescriptor = function (value) {
@@ -8534,13 +9355,14 @@ UnicodeDescriptor.prototype.type = "UnicodeDescriptor";
 
 module.exports = UnicodeDescriptor;
 
-},{"./node":70}],79:[function(require,module,exports){
+},{"./node":73}],81:[function(require,module,exports){
 var Node = require("./node"),
-    unitConversions = require("../data/unit-conversions");
+    unitConversions = require("../data/unit-conversions"),
+    utils = require("../utils");
 
 var Unit = function (numerator, denominator, backupUnit) {
-    this.numerator = numerator ? numerator.slice(0).sort() : [];
-    this.denominator = denominator ? denominator.slice(0).sort() : [];
+    this.numerator = numerator ? utils.copyArray(numerator).sort() : [];
+    this.denominator = denominator ? utils.copyArray(denominator).sort() : [];
     if (backupUnit) {
         this.backupUnit = backupUnit;
     } else if (numerator && numerator.length) {
@@ -8551,7 +9373,7 @@ var Unit = function (numerator, denominator, backupUnit) {
 Unit.prototype = new Node();
 Unit.prototype.type = "Unit";
 Unit.prototype.clone = function () {
-    return new Unit(this.numerator.slice(0), this.denominator.slice(0), this.backupUnit);
+    return new Unit(utils.copyArray(this.numerator), utils.copyArray(this.denominator), this.backupUnit);
 };
 Unit.prototype.genCSS = function (context, output) {
     // Dimension checks the unit is singular and throws an error if in strict math mode.
@@ -8601,7 +9423,7 @@ Unit.prototype.usedUnits = function() {
     var group, result = {}, mapUnit, groupName;
 
     mapUnit = function (atomicUnit) {
-        /*jshint loopfunc:true */
+        /* jshint loopfunc:true */
         if (group.hasOwnProperty(atomicUnit) && !result[groupName]) {
             result[groupName] = atomicUnit;
         }
@@ -8656,13 +9478,13 @@ Unit.prototype.cancel = function () {
 };
 module.exports = Unit;
 
-},{"../data/unit-conversions":14,"./node":70}],80:[function(require,module,exports){
+},{"../data/unit-conversions":15,"../utils":86,"./node":73}],82:[function(require,module,exports){
 var Node = require("./node");
 
 var URL = function (val, index, currentFileInfo, isEvald) {
     this.value = val;
-    this.currentFileInfo = currentFileInfo;
-    this.index = index;
+    this._index = index;
+    this._fileInfo = currentFileInfo;
     this.isEvald = isEvald;
 };
 URL.prototype = new Node();
@@ -8681,7 +9503,7 @@ URL.prototype.eval = function (context) {
 
     if (!this.isEvald) {
         // Add the base path if the URL is relative
-        rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
+        rootpath = this.fileInfo() && this.fileInfo().rootpath;
         if (rootpath &&
             typeof val.value === "string" &&
             context.isPathRelative(val.value)) {
@@ -8708,18 +9530,23 @@ URL.prototype.eval = function (context) {
         }
     }
 
-    return new URL(val, this.index, this.currentFileInfo, true);
+    return new URL(val, this.getIndex(), this.fileInfo(), true);
 };
 module.exports = URL;
 
-},{"./node":70}],81:[function(require,module,exports){
+},{"./node":73}],83:[function(require,module,exports){
 var Node = require("./node");
 
 var Value = function (value) {
-    this.value = value;
     if (!value) {
         throw new Error("Value requires an array argument");
     }
+    if (!Array.isArray(value)) {
+        this.value = [ value ];
+    }
+    else {
+        this.value = value;
+    }
 };
 Value.prototype = new Node();
 Value.prototype.type = "Value";
@@ -8748,13 +9575,29 @@ Value.prototype.genCSS = function (context, output) {
 };
 module.exports = Value;
 
-},{"./node":70}],82:[function(require,module,exports){
+},{"./node":73}],84:[function(require,module,exports){
+var Node = require("./node"),
+    Variable = require("./variable");
+
+var VariableCall = function (variable) {
+    this.variable = variable;
+    this.allowRoot = true;
+};
+VariableCall.prototype = new Node();
+VariableCall.prototype.type = "VariableCall";
+VariableCall.prototype.eval = function (context) {
+    var detachedRuleset = new Variable(this.variable).eval(context);
+    return detachedRuleset.callEval(context);
+};
+module.exports = VariableCall;
+
+},{"./node":73,"./variable":85}],85:[function(require,module,exports){
 var Node = require("./node");
 
 var Variable = function (name, index, currentFileInfo) {
     this.name = name;
-    this.index = index;
-    this.currentFileInfo = currentFileInfo || {};
+    this._index = index;
+    this._fileInfo = currentFileInfo;
 };
 Variable.prototype = new Node();
 Variable.prototype.type = "Variable";
@@ -8762,14 +9605,14 @@ Variable.prototype.eval = function (context) {
     var variable, name = this.name;
 
     if (name.indexOf('@@') === 0) {
-        name = '@' + new Variable(name.slice(1), this.index, this.currentFileInfo).eval(context).value;
+        name = '@' + new Variable(name.slice(1), this.getIndex(), this.fileInfo()).eval(context).value;
     }
 
     if (this.evaluating) {
         throw { type: 'Name',
-                message: "Recursive variable definition for " + name,
-                filename: this.currentFileInfo.filename,
-                index: this.index };
+            message: "Recursive variable definition for " + name,
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
     }
 
     this.evaluating = true;
@@ -8789,9 +9632,9 @@ Variable.prototype.eval = function (context) {
         return variable;
     } else {
         throw { type: 'Name',
-                message: "variable " + name + " is undefined",
-                filename: this.currentFileInfo.filename,
-                index: this.index };
+            message: "variable " + name + " is undefined",
+            filename: this.fileInfo().filename,
+            index: this.getIndex() };
     }
 };
 Variable.prototype.find = function (obj, fun) {
@@ -8803,7 +9646,8 @@ Variable.prototype.find = function (obj, fun) {
 };
 module.exports = Variable;
 
-},{"./node":70}],83:[function(require,module,exports){
+},{"./node":73}],86:[function(require,module,exports){
+/* jshint proto: true */
 module.exports = {
     getLocation: function(index, inputStream) {
         var n = index + 1,
@@ -8822,15 +9666,64 @@ module.exports = {
             line: line,
             column: column
         };
+    },
+    copyArray: function(arr) {
+        var i, length = arr.length,
+            copy = new Array(length);
+        
+        for (i = 0; i < length; i++) {
+            copy[i] = arr[i];
+        }
+        return copy;
+    },
+    clone: function (obj) {
+        var cloned = {};
+        for (var prop in obj) {
+            if (obj.hasOwnProperty(prop)) {
+                cloned[prop] = obj[prop];
+            }
+        }
+        return cloned;
+    },
+    defaults: function(obj1, obj2) {
+        if (!obj2._defaults || obj2._defaults !== obj1) {
+            for (var prop in obj1) {
+                if (obj1.hasOwnProperty(prop)) {
+                    if (!obj2.hasOwnProperty(prop)) {
+                        obj2[prop] = obj1[prop];
+                    }
+                    else if (Array.isArray(obj1[prop])
+                        && Array.isArray(obj2[prop])) {
+
+                        obj1[prop].forEach(function(p) {
+                            if (obj2[prop].indexOf(p) === -1) {
+                                obj2[prop].push(p);
+                            }
+                        });
+                    }
+                }
+            }
+        }
+        obj2._defaults = obj1;
+        return obj2;
+    },
+    merge: function(obj1, obj2) {
+        for (var prop in obj2) {
+            if (obj2.hasOwnProperty(prop)) {
+                obj1[prop] = obj2[prop];
+            }
+        }
+        return obj1;
     }
 };
 
-},{}],84:[function(require,module,exports){
+},{}],87:[function(require,module,exports){
 var tree = require("../tree"),
     Visitor = require("./visitor"),
-    logger = require("../logger");
+    logger = require("../logger"),
+    utils = require("../utils");
 
-/*jshint loopfunc:true */
+/* jshint loopfunc:true */
 
 var ExtendFinderVisitor = function() {
     this._visitor = new Visitor(this);
@@ -8844,7 +9737,7 @@ ExtendFinderVisitor.prototype = {
         root.allExtends = this.allExtendsStack[0];
         return root;
     },
-    visitRule: function (ruleNode, visitArgs) {
+    visitDeclaration: function (declNode, visitArgs) {
         visitArgs.visitDeeper = false;
     },
     visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
@@ -8874,7 +9767,7 @@ ExtendFinderVisitor.prototype = {
                 selector = selectorPath[selectorPath.length - 1],
                 selExtendList = selector.extendList;
 
-            extendList = selExtendList ? selExtendList.slice(0).concat(allSelectorsExtendList)
+            extendList = selExtendList ? utils.copyArray(selExtendList).concat(allSelectorsExtendList)
                                        : allSelectorsExtendList;
 
             if (extendList) {
@@ -8907,11 +9800,11 @@ ExtendFinderVisitor.prototype = {
     visitMediaOut: function (mediaNode) {
         this.allExtendsStack.length = this.allExtendsStack.length - 1;
     },
-    visitDirective: function (directiveNode, visitArgs) {
-        directiveNode.allExtends = [];
-        this.allExtendsStack.push(directiveNode.allExtends);
+    visitAtRule: function (atRuleNode, visitArgs) {
+        atRuleNode.allExtends = [];
+        this.allExtendsStack.push(atRuleNode.allExtends);
     },
-    visitDirectiveOut: function (directiveNode) {
+    visitAtRuleOut: function (atRuleNode) {
         this.allExtendsStack.length = this.allExtendsStack.length - 1;
     }
 };
@@ -8937,17 +9830,17 @@ ProcessExtendsVisitor.prototype = {
         extendList.filter(function(extend) {
             return !extend.hasFoundMatches && extend.parent_ids.length == 1;
         }).forEach(function(extend) {
-                var selector = "_unknown_";
-                try {
-                    selector = extend.selector.toCSS({});
-                }
-                catch(_) {}
+            var selector = "_unknown_";
+            try {
+                selector = extend.selector.toCSS({});
+            }
+            catch (_) {}
 
-                if (!indices[extend.index + ' ' + selector]) {
-                    indices[extend.index + ' ' + selector] = true;
-                    logger.warn("extend '" + selector + "' has no matches");
-                }
-            });
+            if (!indices[extend.index + ' ' + selector]) {
+                indices[extend.index + ' ' + selector] = true;
+                logger.warn("extend '" + selector + "' has no matches");
+            }
+        });
     },
     doExtendChaining: function (extendsList, extendsListTarget, iterationCount) {
         //
@@ -8964,7 +9857,7 @@ ProcessExtendsVisitor.prototype = {
 
         iterationCount = iterationCount || 0;
 
-        //loop through comparing every extend with every target extend.
+        // loop through comparing every extend with every target extend.
         // a target extend is the one on the ruleset we are looking at copy/edit/pasting in place
         // e.g.  .a:extend(.b) {}  and .b:extend(.c) {} then the first extend extends the second one
         // and the second is the target.
@@ -8994,7 +9887,7 @@ ProcessExtendsVisitor.prototype = {
                         newSelector = extendVisitor.extendSelector(matches, selectorPath, selfSelector, extend.isVisible());
 
                         // but now we create a new extend from it
-                        newExtend = new(tree.Extend)(targetExtend.selector, targetExtend.option, 0, targetExtend.currentFileInfo, info);
+                        newExtend = new(tree.Extend)(targetExtend.selector, targetExtend.option, 0, targetExtend.fileInfo(), info);
                         newExtend.selfSelectors = newSelector;
 
                         // add the extend onto the list of extends for that selector
@@ -9030,7 +9923,7 @@ ProcessExtendsVisitor.prototype = {
                     selectorOne = extendsToAdd[0].selfSelectors[0].toCSS();
                     selectorTwo = extendsToAdd[0].selector.toCSS();
                 }
-                catch(e) {}
+                catch (e) {}
                 throw { message: "extend circular reference detected. One of the circular extends is currently:" +
                     selectorOne + ":extend(" + selectorTwo + ")"};
             }
@@ -9042,7 +9935,7 @@ ProcessExtendsVisitor.prototype = {
             return extendsToAdd;
         }
     },
-    visitRule: function (ruleNode, visitArgs) {
+    visitDeclaration: function (ruleNode, visitArgs) {
         visitArgs.visitDeeper = false;
     },
     visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
@@ -9195,7 +10088,7 @@ ProcessExtendsVisitor.prototype = {
     },
     extendSelector:function (matches, selectorPath, replacementSelector, isVisible) {
 
-        //for a set of matches, replace each match with the replacement selector
+        // for a set of matches, replace each match with the replacement selector
 
         var currentSelectorPathIndex = 0,
             currentSelectorPathElementIndex = 0,
@@ -9212,8 +10105,8 @@ ProcessExtendsVisitor.prototype = {
             firstElement = new tree.Element(
                 match.initialCombinator,
                 replacementSelector.elements[0].value,
-                replacementSelector.elements[0].index,
-                replacementSelector.elements[0].currentFileInfo
+                replacementSelector.elements[0].getIndex(),
+                replacementSelector.elements[0].fileInfo()
             );
 
             if (match.pathIndex > currentSelectorPathIndex && currentSelectorPathElementIndex > 0) {
@@ -9274,12 +10167,12 @@ ProcessExtendsVisitor.prototype = {
         var lastIndex = this.allExtendsStack.length - 1;
         this.allExtendsStack.length = lastIndex;
     },
-    visitDirective: function (directiveNode, visitArgs) {
-        var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
-        newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, directiveNode.allExtends));
+    visitAtRule: function (atRuleNode, visitArgs) {
+        var newAllExtends = atRuleNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
+        newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, atRuleNode.allExtends));
         this.allExtendsStack.push(newAllExtends);
     },
-    visitDirectiveOut: function (directiveNode) {
+    visitAtRuleOut: function (atRuleNode) {
         var lastIndex = this.allExtendsStack.length - 1;
         this.allExtendsStack.length = lastIndex;
     }
@@ -9287,7 +10180,7 @@ ProcessExtendsVisitor.prototype = {
 
 module.exports = ProcessExtendsVisitor;
 
-},{"../logger":33,"../tree":62,"./visitor":91}],85:[function(require,module,exports){
+},{"../logger":37,"../tree":65,"../utils":86,"./visitor":94}],88:[function(require,module,exports){
 function ImportSequencer(onSequencerEmpty) {
     this.imports = [];
     this.variableImports = [];
@@ -9343,10 +10236,11 @@ ImportSequencer.prototype.tryRun = function() {
 
 module.exports = ImportSequencer;
 
-},{}],86:[function(require,module,exports){
+},{}],89:[function(require,module,exports){
 var contexts = require("../contexts"),
     Visitor = require("./visitor"),
-    ImportSequencer = require("./import-sequencer");
+    ImportSequencer = require("./import-sequencer"),
+    utils = require("../utils");
 
 var ImportVisitor = function(importer, finish) {
 
@@ -9367,7 +10261,7 @@ ImportVisitor.prototype = {
             // process the contents
             this._visitor.visit(root);
         }
-        catch(e) {
+        catch (e) {
             this.error = e;
         }
 
@@ -9385,7 +10279,7 @@ ImportVisitor.prototype = {
 
         if (!importNode.css || inlineCSS) {
 
-            var context = new contexts.Eval(this.context, this.context.frames.slice(0));
+            var context = new contexts.Eval(this.context, utils.copyArray(this.context.frames));
             var importParent = context.frames[0];
 
             this.importCount++;
@@ -9403,8 +10297,8 @@ ImportVisitor.prototype = {
 
         try {
             evaldImportNode = importNode.evalForImport(context);
-        } catch(e) {
-            if (!e.filename) { e.index = importNode.index; e.filename = importNode.currentFileInfo.filename; }
+        } catch (e) {
+            if (!e.filename) { e.index = importNode.getIndex(); e.filename = importNode.fileInfo().filename; }
             // attempt to eval properly and treat as css
             importNode.css = true;
             // if that fails, this error will be thrown
@@ -9430,7 +10324,7 @@ ImportVisitor.prototype = {
             var onImported = this.onImported.bind(this, evaldImportNode, context),
                 sequencedOnImported = this._sequencer.addImport(onImported);
 
-            this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.currentFileInfo,
+            this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.fileInfo(),
                 evaldImportNode.options, sequencedOnImported);
         } else {
             this.importCount--;
@@ -9442,14 +10336,14 @@ ImportVisitor.prototype = {
     onImported: function (importNode, context, e, root, importedAtRoot, fullPath) {
         if (e) {
             if (!e.filename) {
-                e.index = importNode.index; e.filename = importNode.currentFileInfo.filename;
+                e.index = importNode.getIndex(); e.filename = importNode.fileInfo().filename;
             }
             this.error = e;
         }
 
         var importVisitor = this,
             inlineCSS = importNode.options.inline,
-            isPlugin = importNode.options.plugin,
+            isPlugin = importNode.options.isPlugin,
             isOptional = importNode.options.optional,
             duplicateImport = importedAtRoot || fullPath in importVisitor.recursionDetector;
 
@@ -9495,22 +10389,22 @@ ImportVisitor.prototype = {
             importVisitor._sequencer.tryRun();
         }
     },
-    visitRule: function (ruleNode, visitArgs) {
-        if (ruleNode.value.type === "DetachedRuleset") {
-            this.context.frames.unshift(ruleNode);
+    visitDeclaration: function (declNode, visitArgs) {
+        if (declNode.value.type === "DetachedRuleset") {
+            this.context.frames.unshift(declNode);
         } else {
             visitArgs.visitDeeper = false;
         }
     },
-    visitRuleOut : function(ruleNode) {
-        if (ruleNode.value.type === "DetachedRuleset") {
+    visitDeclarationOut: function(declNode) {
+        if (declNode.value.type === "DetachedRuleset") {
             this.context.frames.shift();
         }
     },
-    visitDirective: function (directiveNode, visitArgs) {
-        this.context.frames.unshift(directiveNode);
+    visitAtRule: function (atRuleNode, visitArgs) {
+        this.context.frames.unshift(atRuleNode);
     },
-    visitDirectiveOut: function (directiveNode) {
+    visitAtRuleOut: function (atRuleNode) {
         this.context.frames.shift();
     },
     visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
@@ -9534,7 +10428,7 @@ ImportVisitor.prototype = {
 };
 module.exports = ImportVisitor;
 
-},{"../contexts":11,"./import-sequencer":85,"./visitor":91}],87:[function(require,module,exports){
+},{"../contexts":12,"../utils":86,"./import-sequencer":88,"./visitor":94}],90:[function(require,module,exports){
 var visitors = {
     Visitor: require("./visitor"),
     ImportVisitor: require('./import-visitor'),
@@ -9546,7 +10440,7 @@ var visitors = {
 
 module.exports = visitors;
 
-},{"./extend-visitor":84,"./import-visitor":86,"./join-selector-visitor":88,"./set-tree-visibility-visitor":89,"./to-css-visitor":90,"./visitor":91}],88:[function(require,module,exports){
+},{"./extend-visitor":87,"./import-visitor":89,"./join-selector-visitor":91,"./set-tree-visibility-visitor":92,"./to-css-visitor":93,"./visitor":94}],91:[function(require,module,exports){
 var Visitor = require("./visitor");
 
 var JoinSelectorVisitor = function() {
@@ -9558,7 +10452,7 @@ JoinSelectorVisitor.prototype = {
     run: function (root) {
         return this._visitor.visit(root);
     },
-    visitRule: function (ruleNode, visitArgs) {
+    visitDeclaration: function (declNode, visitArgs) {
         visitArgs.visitDeeper = false;
     },
     visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
@@ -9571,7 +10465,7 @@ JoinSelectorVisitor.prototype = {
 
         this.contexts.push(paths);
 
-        if (! rulesetNode.root) {
+        if (!rulesetNode.root) {
             selectors = rulesetNode.selectors;
             if (selectors) {
                 selectors = selectors.filter(function(selector) { return selector.getIsOutput(); });
@@ -9589,17 +10483,17 @@ JoinSelectorVisitor.prototype = {
         var context = this.contexts[this.contexts.length - 1];
         mediaNode.rules[0].root = (context.length === 0 || context[0].multiMedia);
     },
-    visitDirective: function (directiveNode, visitArgs) {
+    visitAtRule: function (atRuleNode, visitArgs) {
         var context = this.contexts[this.contexts.length - 1];
-        if (directiveNode.rules && directiveNode.rules.length) {
-            directiveNode.rules[0].root = (directiveNode.isRooted || context.length === 0 || null);
+        if (atRuleNode.rules && atRuleNode.rules.length) {
+            atRuleNode.rules[0].root = (atRuleNode.isRooted || context.length === 0 || null);
         }
     }
 };
 
 module.exports = JoinSelectorVisitor;
 
-},{"./visitor":91}],89:[function(require,module,exports){
+},{"./visitor":94}],92:[function(require,module,exports){
 var SetTreeVisibilityVisitor = function(visible) {
     this.visible = visible;
 };
@@ -9638,7 +10532,7 @@ SetTreeVisibilityVisitor.prototype.visit = function(node) {
     return node;
 };
 module.exports = SetTreeVisibilityVisitor;
-},{}],90:[function(require,module,exports){
+},{}],93:[function(require,module,exports){
 var tree = require("../tree"),
     Visitor = require("./visitor");
 
@@ -9650,14 +10544,14 @@ var CSSVisitorUtils = function(context) {
 CSSVisitorUtils.prototype = {
     containsSilentNonBlockedChild: function(bodyRules) {
         var rule;
-        if (bodyRules == null) {
+        if (!bodyRules) {
             return false;
         }
         for (var r = 0; r < bodyRules.length; r++) {
             rule = bodyRules[r];
             if (rule.isSilent && rule.isSilent(this._context) && !rule.blocksVisibility()) {
-                //the directive contains something that was referenced (likely by extend)
-                //therefore it needs to be shown in output too
+                // the atrule contains something that was referenced (likely by extend)
+                // therefore it needs to be shown in output too
                 return true;
             }
         }
@@ -9665,28 +10559,21 @@ CSSVisitorUtils.prototype = {
     },
 
     keepOnlyVisibleChilds: function(owner) {
-        if (owner == null || owner.rules == null) {
-            return ;
-        }
-
-        owner.rules = owner.rules.filter(function(thing) {
+        if (owner && owner.rules) {
+            owner.rules = owner.rules.filter(function(thing) {
                 return thing.isVisible();
-            }
-        );
+            });
+        }
     },
 
     isEmpty: function(owner) {
-        if (owner == null || owner.rules == null) {
-            return true;
-        }
-        return owner.rules.length === 0;
+        return (owner && owner.rules) 
+            ? (owner.rules.length === 0) : true;
     },
 
     hasVisibleSelector: function(rulesetNode) {
-        if (rulesetNode == null || rulesetNode.paths == null) {
-            return false;
-        }
-        return rulesetNode.paths.length > 0;
+        return (rulesetNode && rulesetNode.paths)
+            ? (rulesetNode.paths.length > 0) : false;
     },
 
     resolveVisibility: function (node, originalRules) {
@@ -9741,11 +10628,11 @@ ToCSSVisitor.prototype = {
         return this._visitor.visit(root);
     },
 
-    visitRule: function (ruleNode, visitArgs) {
-        if (ruleNode.blocksVisibility() || ruleNode.variable) {
+    visitDeclaration: function (declNode, visitArgs) {
+        if (declNode.blocksVisibility() || declNode.variable) {
             return;
         }
-        return ruleNode;
+        return declNode;
     },
 
     visitMixinDefinition: function (mixinNode, visitArgs) {
@@ -9779,56 +10666,63 @@ ToCSSVisitor.prototype = {
         return importNode;
     },
 
-    visitDirective: function(directiveNode, visitArgs) {
-        if (directiveNode.rules && directiveNode.rules.length) {
-            return this.visitDirectiveWithBody(directiveNode, visitArgs);
+    visitAtRule: function(atRuleNode, visitArgs) {
+        if (atRuleNode.rules && atRuleNode.rules.length) {
+            return this.visitAtRuleWithBody(atRuleNode, visitArgs);
         } else {
-            return this.visitDirectiveWithoutBody(directiveNode, visitArgs);
+            return this.visitAtRuleWithoutBody(atRuleNode, visitArgs);
+        }
+    },
+
+    visitAnonymous: function(anonymousNode, visitArgs) {
+        if (!anonymousNode.blocksVisibility()) {
+            anonymousNode.accept(this._visitor);
+            return anonymousNode;
         }
     },
 
-    visitDirectiveWithBody: function(directiveNode, visitArgs) {
-        //if there is only one nested ruleset and that one has no path, then it is
-        //just fake ruleset
-        function hasFakeRuleset(directiveNode) {
-            var bodyRules = directiveNode.rules;
+    visitAtRuleWithBody: function(atRuleNode, visitArgs) {
+        // if there is only one nested ruleset and that one has no path, then it is
+        // just fake ruleset
+        function hasFakeRuleset(atRuleNode) {
+            var bodyRules = atRuleNode.rules;
             return bodyRules.length === 1 && (!bodyRules[0].paths || bodyRules[0].paths.length === 0);
         }
-        function getBodyRules(directiveNode) {
-            var nodeRules = directiveNode.rules;
-            if (hasFakeRuleset(directiveNode)) {
+        function getBodyRules(atRuleNode) {
+            var nodeRules = atRuleNode.rules;
+            if (hasFakeRuleset(atRuleNode)) {
                 return nodeRules[0].rules;
             }
 
             return nodeRules;
         }
-        //it is still true that it is only one ruleset in array
-        //this is last such moment
-        //process childs
-        var originalRules = getBodyRules(directiveNode);
-        directiveNode.accept(this._visitor);
+        // it is still true that it is only one ruleset in array
+        // this is last such moment
+        // process childs
+        var originalRules = getBodyRules(atRuleNode);
+        atRuleNode.accept(this._visitor);
         visitArgs.visitDeeper = false;
 
-        if (!this.utils.isEmpty(directiveNode)) {
-            this._mergeRules(directiveNode.rules[0].rules);
+        if (!this.utils.isEmpty(atRuleNode)) {
+            this._mergeRules(atRuleNode.rules[0].rules);
         }
 
-        return this.utils.resolveVisibility(directiveNode, originalRules);
+        return this.utils.resolveVisibility(atRuleNode, originalRules);
     },
 
-    visitDirectiveWithoutBody: function(directiveNode, visitArgs) {
-        if (directiveNode.blocksVisibility()) {
+    visitAtRuleWithoutBody: function(atRuleNode, visitArgs) {
+        if (atRuleNode.blocksVisibility()) {
             return;
         }
 
-        if (directiveNode.name === "@charset") {
+        if (atRuleNode.name === "@charset") {
             // Only output the debug info together with subsequent @charset definitions
-            // a comment (or @media statement) before the actual @charset directive would
+            // a comment (or @media statement) before the actual @charset atrule would
             // be considered illegal css as it has to be on the first line
             if (this.charset) {
-                if (directiveNode.debugInfo) {
-                    var comment = new tree.Comment("/* " + directiveNode.toCSS(this._context).replace(/\n/g, "") + " */\n");
-                    comment.debugInfo = directiveNode.debugInfo;
+                if (atRuleNode.debugInfo) {
+                    var comment = new tree.Comment("/* " + atRuleNode.toCSS(this._context).replace(/\n/g, "") + " */\n");
+                    comment.debugInfo = atRuleNode.debugInfo;
                     return this._visitor.visit(comment);
                 }
                 return;
@@ -9836,7 +10730,7 @@ ToCSSVisitor.prototype = {
             this.charset = true;
         }
 
-        return directiveNode;
+        return atRuleNode;
     },
 
     checkValidNodes: function(rules, isRoot) {
@@ -9846,29 +10740,29 @@ ToCSSVisitor.prototype = {
 
         for (var i = 0; i < rules.length; i++) {
             var ruleNode = rules[i];
-            if (isRoot && ruleNode instanceof tree.Rule && !ruleNode.variable) {
+            if (isRoot && ruleNode instanceof tree.Declaration && !ruleNode.variable) {
                 throw { message: "Properties must be inside selector blocks. They cannot be in the root",
-                    index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+                    index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename};
             }
             if (ruleNode instanceof tree.Call) {
                 throw { message: "Function '" + ruleNode.name + "' is undefined",
-                    index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+                    index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename};
             }
             if (ruleNode.type && !ruleNode.allowRoot) {
                 throw { message: ruleNode.type + " node returned by a function is not valid here",
-                    index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+                    index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename};
             }
         }
     },
 
     visitRuleset: function (rulesetNode, visitArgs) {
-        //at this point rulesets are nested into each other
+        // at this point rulesets are nested into each other
         var rule, rulesets = [];
 
         this.checkValidNodes(rulesetNode.rules, rulesetNode.firstRoot);
 
-        if (! rulesetNode.root) {
-            //remove invisible paths
+        if (!rulesetNode.root) {
+            // remove invisible paths
             this._compileRulesetPaths(rulesetNode);
 
             // remove rulesets from this ruleset body and compile them separately
@@ -9894,7 +10788,7 @@ ToCSSVisitor.prototype = {
             }
             visitArgs.visitDeeper = false;
 
-        } else { //if (! rulesetNode.root) {
+        } else { // if (! rulesetNode.root) {
             rulesetNode.accept(this._visitor);
             visitArgs.visitDeeper = false;
         }
@@ -9904,7 +10798,7 @@ ToCSSVisitor.prototype = {
             this._removeDuplicateRules(rulesetNode.rules);
         }
 
-        //now decide whether we keep the ruleset
+        // now decide whether we keep the ruleset
         if (this.utils.isVisibleRuleset(rulesetNode)) {
             rulesetNode.ensureVisibility();
             rulesets.splice(0, 0, rulesetNode);
@@ -9943,12 +10837,12 @@ ToCSSVisitor.prototype = {
 
         for (i = rules.length - 1; i >= 0 ; i--) {
             rule = rules[i];
-            if (rule instanceof tree.Rule) {
+            if (rule instanceof tree.Declaration) {
                 if (!ruleCache[rule.name]) {
                     ruleCache[rule.name] = rule;
                 } else {
                     ruleList = ruleCache[rule.name];
-                    if (ruleList instanceof tree.Rule) {
+                    if (ruleList instanceof tree.Declaration) {
                         ruleList = ruleCache[rule.name] = [ruleCache[rule.name].toCSS(this._context)];
                     }
                     var ruleCSS = rule.toCSS(this._context);
@@ -9962,78 +10856,45 @@ ToCSSVisitor.prototype = {
         }
     },
 
-    _mergeRules: function (rules) {
-        if (!rules) { return; }
-
-        var groups = {},
-            parts,
-            rule,
-            key;
+    _mergeRules: function(rules) {
+        if (!rules) {
+            return; 
+        }
 
+        var groups    = {},
+            groupsArr = [];
+        
         for (var i = 0; i < rules.length; i++) {
-            rule = rules[i];
-
-            if ((rule instanceof tree.Rule) && rule.merge) {
-                key = [rule.name,
-                    rule.important ? "!" : ""].join(",");
-
-                if (!groups[key]) {
-                    groups[key] = [];
-                } else {
-                    rules.splice(i--, 1);
-                }
-
+            var rule = rules[i];
+            if (rule.merge) {
+                var key = rule.name;
+                groups[key] ? rules.splice(i--, 1) : 
+                    groupsArr.push(groups[key] = []);
                 groups[key].push(rule);
             }
         }
 
-        Object.keys(groups).map(function (k) {
-
-            function toExpression(values) {
-                return new (tree.Expression)(values.map(function (p) {
-                    return p.value;
-                }));
-            }
-
-            function toValue(values) {
-                return new (tree.Value)(values.map(function (p) {
-                    return p;
-                }));
-            }
-
-            parts = groups[k];
-
-            if (parts.length > 1) {
-                rule = parts[0];
-                var spacedGroups = [];
-                var lastSpacedGroup = [];
-                parts.map(function (p) {
-                    if (p.merge === "+") {
-                        if (lastSpacedGroup.length > 0) {
-                            spacedGroups.push(toExpression(lastSpacedGroup));
-                        }
-                        lastSpacedGroup = [];
+        groupsArr.forEach(function(group) {
+            if (group.length > 0) {
+                var result = group[0],
+                    space  = [],
+                    comma  = [new tree.Expression(space)];
+                group.forEach(function(rule) {
+                    if ((rule.merge === '+') && (space.length > 0)) {
+                        comma.push(new tree.Expression(space = []));
                     }
-                    lastSpacedGroup.push(p);
+                    space.push(rule.value);
+                    result.important = result.important || rule.important;
                 });
-                spacedGroups.push(toExpression(lastSpacedGroup));
-                rule.value = toValue(spacedGroups);
+                result.value = new tree.Value(comma);
             }
         });
-    },
-
-    visitAnonymous: function(anonymousNode, visitArgs) {
-        if (anonymousNode.blocksVisibility()) {
-            return ;
-        }
-        anonymousNode.accept(this._visitor);
-        return anonymousNode;
     }
 };
 
 module.exports = ToCSSVisitor;
 
-},{"../tree":62,"./visitor":91}],91:[function(require,module,exports){
+},{"../tree":65,"./visitor":94}],94:[function(require,module,exports){
 var tree = require("../tree");
 
 var _visitArgs = { visitDeeper: true },
@@ -10046,21 +10907,21 @@ function _noop(node) {
 function indexNodeTypes(parent, ticker) {
     // add .typeIndex to tree node types for lookup table
     var key, child;
-    for (key in parent) {
-        if (parent.hasOwnProperty(key)) {
-            child = parent[key];
-            switch (typeof child) {
-                case "function":
-                    // ignore bound functions directly on tree which do not have a prototype
-                    // or aren't nodes
-                    if (child.prototype && child.prototype.type) {
-                        child.prototype.typeIndex = ticker++;
-                    }
-                    break;
-                case "object":
-                    ticker = indexNodeTypes(child, ticker);
-                    break;
-            }
+    for (key in parent) { 
+        /* eslint guard-for-in: 0 */
+        child = parent[key];
+        switch (typeof child) {
+            case "function":
+                // ignore bound functions directly on tree which do not have a prototype
+                // or aren't nodes
+                if (child.prototype && child.prototype.type) {
+                    child.prototype.typeIndex = ticker++;
+                }
+                break;
+            case "object":
+                ticker = indexNodeTypes(child, ticker);
+                break;
+        
         }
     }
     return ticker;
@@ -10187,7 +11048,7 @@ Visitor.prototype = {
 };
 module.exports = Visitor;
 
-},{"../tree":62}],92:[function(require,module,exports){
+},{"../tree":65}],95:[function(require,module,exports){
 "use strict";
 
 // rawAsap provides everything we need except exception management.
@@ -10255,7 +11116,7 @@ RawTask.prototype.call = function () {
     }
 };
 
-},{"./raw":93}],93:[function(require,module,exports){
+},{"./raw":96}],96:[function(require,module,exports){
 (function (global){
 "use strict";
 
@@ -10482,7 +11343,7 @@ rawAsap.makeRequestCallFromTimer = makeRequestCallFromTimer;
 // https://github.com/tildeio/rsvp.js/blob/cddf7232546a9cf858524b75cde6f9edf72620a7/lib/rsvp/asap.js
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],94:[function(require,module,exports){
+},{}],97:[function(require,module,exports){
 'use strict';
 
 var asap = require('asap/raw');
@@ -10697,7 +11558,7 @@ function doResolve(fn, promise) {
   }
 }
 
-},{"asap/raw":93}],95:[function(require,module,exports){
+},{"asap/raw":96}],98:[function(require,module,exports){
 'use strict';
 
 //This file contains the ES6 extensions to the core Promises/A+ API
@@ -10806,7 +11667,7 @@ Promise.prototype['catch'] = function (onRejected) {
   return this.then(null, onRejected);
 };
 
-},{"./core.js":94}],96:[function(require,module,exports){
+},{"./core.js":97}],99:[function(require,module,exports){
 // should work in any browser without browserify
 
 if (typeof Promise.prototype.done !== 'function') {
@@ -10819,7 +11680,7 @@ if (typeof Promise.prototype.done !== 'function') {
     })
   }
 }
-},{}],97:[function(require,module,exports){
+},{}],100:[function(require,module,exports){
 // not "use strict" so we can declare global "Promise"
 
 var asap = require('asap');
@@ -10831,5 +11692,5 @@ if (typeof Promise === 'undefined') {
 
 require('./polyfill-done.js');
 
-},{"./lib/core.js":94,"./lib/es6-extensions.js":95,"./polyfill-done.js":96,"asap":92}]},{},[2])(2)
+},{"./lib/core.js":97,"./lib/es6-extensions.js":98,"./polyfill-done.js":99,"asap":95}]},{},[2])(2)
 });
\ No newline at end of file
diff --git a/dist/less.min.js b/dist/less.min.js
index 0f9143ac8..90aa4b646 100644
--- a/dist/less.min.js
+++ b/dist/less.min.js
@@ -1,8 +1,8 @@
 /*!
- * Less - Leaner CSS v2.7.3
+ * Less - Leaner CSS v3.0.0
  * http://lesscss.org
  *
- * Copyright (c) 2009-2017, Alexis Sellier <self@cloudhead.net>
+ * Copyright (c) 2009-2018, Alexis Sellier <self@cloudhead.net>
  * Licensed under the Apache-2.0 License.
  *
  */
@@ -10,8 +10,8 @@
  /** * @license Apache-2.0
  */
 
-!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,b.less=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(a,b){d(b,e.currentScript(a)),void 0===b.isFileProtocol&&(b.isFileProtocol=/^(file|(chrome|safari)(-extension)?|resource|qrc|app):/.test(a.location.protocol)),b.async=b.async||!1,b.fileAsync=b.fileAsync||!1,b.poll=b.poll||(b.isFileProtocol?1e3:1500),b.env=b.env||("127.0.0.1"==a.location.hostname||"0.0.0.0"==a.location.hostname||"localhost"==a.location.hostname||a.location.port&&a.location.port.length>0||b.isFileProtocol?"development":"production");var c=/!dumpLineNumbers:(comments|mediaquery|all)/.exec(a.location.hash);c&&(b.dumpLineNumbers=c[1]),void 0===b.useFileCache&&(b.useFileCache=!0),void 0===b.onReady&&(b.onReady=!0)}},{"./browser":3,"./utils":10}],2:[function(a,b,c){function d(a){a.filename&&console.warn(a),e.async||h.removeChild(i)}a("promise/polyfill.js");var e=window.less||{};a("./add-default-options")(window,e);var f=b.exports=a("./index")(window,e);window.less=f;var g,h,i;e.onReady&&(/!watch/.test(window.location.hash)&&f.watch(),e.async||(g="body { display: none !important }",h=document.head||document.getElementsByTagName("head")[0],i=document.createElement("style"),i.type="text/css",i.styleSheet?i.styleSheet.cssText=g:i.appendChild(document.createTextNode(g)),h.appendChild(i)),f.registerStylesheetsImmediately(),f.pageLoadFinished=f.refresh("development"===f.env).then(d,d))},{"./add-default-options":1,"./index":8,"promise/polyfill.js":97}],3:[function(a,b,c){var d=a("./utils");b.exports={createCSS:function(a,b,c){var e=c.href||"",f="less:"+(c.title||d.extractId(e)),g=a.getElementById(f),h=!1,i=a.createElement("style");i.setAttribute("type","text/css"),c.media&&i.setAttribute("media",c.media),i.id=f,i.styleSheet||(i.appendChild(a.createTextNode(b)),h=null!==g&&g.childNodes.length>0&&i.childNodes.length>0&&g.firstChild.nodeValue===i.firstChild.nodeValue);var j=a.getElementsByTagName("head")[0];if(null===g||h===!1){var k=c&&c.nextSibling||null;k?k.parentNode.insertBefore(i,k):j.appendChild(i)}if(g&&h===!1&&g.parentNode.removeChild(g),i.styleSheet)try{i.styleSheet.cssText=b}catch(l){throw new Error("Couldn't reassign styleSheet.cssText.")}},currentScript:function(a){var b=a.document;return b.currentScript||function(){var a=b.getElementsByTagName("script");return a[a.length-1]}()}}},{"./utils":10}],4:[function(a,b,c){b.exports=function(a,b,c){var d=null;if("development"!==b.env)try{d="undefined"==typeof a.localStorage?null:a.localStorage}catch(e){}return{setCSS:function(a,b,e,f){if(d){c.info("saving "+a+" to cache.");try{d.setItem(a,f),d.setItem(a+":timestamp",b),e&&d.setItem(a+":vars",JSON.stringify(e))}catch(g){c.error('failed to save "'+a+'" to local storage for caching.')}}},getCSS:function(a,b,c){var e=d&&d.getItem(a),f=d&&d.getItem(a+":timestamp"),g=d&&d.getItem(a+":vars");if(c=c||{},f&&b.lastModified&&new Date(b.lastModified).valueOf()===new Date(f).valueOf()&&(!c&&!g||JSON.stringify(c)===g))return e}}}},{}],5:[function(a,b,c){var d=a("./utils"),e=a("./browser");b.exports=function(a,b,c){function f(b,f){var g,h,i="less-error-message:"+d.extractId(f||""),j='<li><label>{line}</label><pre class="{class}">{content}</pre></li>',k=a.document.createElement("div"),l=[],m=b.filename||f,n=m.match(/([^\/]+(\?.*)?)$/)[1];k.id=i,k.className="less-error-message",h="<h3>"+(b.type||"Syntax")+"Error: "+(b.message||"There is an error in your .less file")+'</h3><p>in <a href="'+m+'">'+n+"</a> ";var o=function(a,b,c){void 0!==a.extract[b]&&l.push(j.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};b.extract&&(o(b,0,""),o(b,1,"line"),o(b,2,""),h+="on line "+b.line+", column "+(b.column+1)+":</p><ul>"+l.join("")+"</ul>"),b.stack&&(b.extract||c.logLevel>=4)&&(h+="<br/>Stack Trace</br />"+b.stack.split("\n").slice(1).join("<br/>")),k.innerHTML=h,e.createCSS(a.document,[".less-error-message ul, .less-error-message li {","list-style-type: none;","margin-right: 15px;","padding: 4px 0;","margin: 0;","}",".less-error-message label {","font-size: 12px;","margin-right: 15px;","padding: 4px 0;","color: #cc7777;","}",".less-error-message pre {","color: #dd6666;","padding: 4px 0;","margin: 0;","display: inline-block;","}",".less-error-message pre.line {","color: #ff0000;","}",".less-error-message h3 {","font-size: 20px;","font-weight: bold;","padding: 15px 0 5px 0;","margin: 0;","}",".less-error-message a {","color: #10a","}",".less-error-message .error {","color: red;","font-weight: bold;","padding-bottom: 2px;","border-bottom: 1px dashed red;","}"].join("\n"),{title:"error-message"}),k.style.cssText=["font-family: Arial, sans-serif","border: 1px solid #e00","background-color: #eee","border-radius: 5px","-webkit-border-radius: 5px","-moz-border-radius: 5px","color: #e00","padding: 15px","margin-bottom: 15px"].join(";"),"development"===c.env&&(g=setInterval(function(){var b=a.document,c=b.body;c&&(b.getElementById(i)?c.replaceChild(k,b.getElementById(i)):c.insertBefore(k,c.firstChild),clearInterval(g))},10))}function g(b){var c=a.document.getElementById("less-error-message:"+d.extractId(b));c&&c.parentNode.removeChild(c)}function h(a){}function i(a){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?h(a):"function"==typeof c.errorReporting&&c.errorReporting("remove",a):g(a)}function j(a,d){var e="{line} {content}",f=a.filename||d,g=[],h=(a.type||"Syntax")+"Error: "+(a.message||"There is an error in your .less file")+" in "+f+" ",i=function(a,b,c){void 0!==a.extract[b]&&g.push(e.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};a.extract&&(i(a,0,""),i(a,1,"line"),i(a,2,""),h+="on line "+a.line+", column "+(a.column+1)+":\n"+g.join("\n")),a.stack&&(a.extract||c.logLevel>=4)&&(h+="\nStack Trace\n"+a.stack),b.logger.error(h)}function k(a,b){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?j(a,b):"function"==typeof c.errorReporting&&c.errorReporting("add",a,b):f(a,b)}return{add:k,remove:i}}},{"./browser":3,"./utils":10}],6:[function(a,b,c){b.exports=function(b,c){function d(){if(window.XMLHttpRequest&&!("file:"===window.location.protocol&&"ActiveXObject"in window))return new XMLHttpRequest;try{return new ActiveXObject("Microsoft.XMLHTTP")}catch(a){return c.error("browser doesn't support AJAX."),null}}var e=a("../less/environment/abstract-file-manager.js"),f={},g=function(){};return g.prototype=new e,g.prototype.alwaysMakePathsAbsolute=function(){return!0},g.prototype.join=function(a,b){return a?this.extractUrlParts(b,a).path:b},g.prototype.doXHR=function(a,e,f,g){function h(b,c,d){b.status>=200&&b.status<300?c(b.responseText,b.getResponseHeader("Last-Modified")):"function"==typeof d&&d(b.status,a)}var i=d(),j=!b.isFileProtocol||b.fileAsync;"function"==typeof i.overrideMimeType&&i.overrideMimeType("text/css"),c.debug("XHR: Getting '"+a+"'"),i.open("GET",a,j),i.setRequestHeader("Accept",e||"text/x-less, text/css; q=0.9, */*; q=0.5"),i.send(null),b.isFileProtocol&&!b.fileAsync?0===i.status||i.status>=200&&i.status<300?f(i.responseText):g(i.status,a):j?i.onreadystatechange=function(){4==i.readyState&&h(i,f,g)}:h(i,f,g)},g.prototype.supports=function(a,b,c,d){return!0},g.prototype.clearFileCache=function(){f={}},g.prototype.loadFile=function(a,b,c,d,e){b&&!this.isPathAbsolute(a)&&(a=b+a),c=c||{};var g=this.extractUrlParts(a,window.location.href),h=g.url;if(c.useFileCache&&f[h])try{var i=f[h];e(null,{contents:i,filename:h,webInfo:{lastModified:new Date}})}catch(j){e({filename:h,message:"Error loading file "+h+" error was "+j.message})}else this.doXHR(h,c.mime,function(a,b){f[h]=a,e(null,{contents:a,filename:h,webInfo:{lastModified:b}})},function(a,b){e({type:"File",message:"'"+b+"' wasn't found ("+a+")",href:h})})},g}},{"../less/environment/abstract-file-manager.js":15}],7:[function(a,b,c){b.exports=function(){function b(){throw{type:"Runtime",message:"Image size functions are not supported in browser version of less"}}var c=a("./../less/functions/function-registry"),d={"image-size":function(a){return b(this,a),-1},"image-width":function(a){return b(this,a),-1},"image-height":function(a){return b(this,a),-1}};c.addMultiple(d)}},{"./../less/functions/function-registry":22}],8:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(b,c){function f(a){return c.postProcessor&&"function"==typeof c.postProcessor&&(a=c.postProcessor.call(a,a)||a),a}function g(a){var b={};for(var c in a)a.hasOwnProperty(c)&&(b[c]=a[c]);return b}function h(a,b){var c=Array.prototype.slice.call(arguments,2);return function(){var d=c.concat(Array.prototype.slice.call(arguments,0));return a.apply(b,d)}}function i(a){for(var b,d=m.getElementsByTagName("style"),e=0;e<d.length;e++)if(b=d[e],b.type.match(t)){var f=g(c);f.modifyVars=a;var i=b.innerHTML||"";f.filename=m.location.href.replace(/#.*$/,""),n.render(i,f,h(function(a,b,c){b?r.add(b,"inline"):(a.type="text/css",a.styleSheet?a.styleSheet.cssText=c.css:a.innerHTML=c.css)},null,b))}}function j(a,b,e,h,i){function j(c){var d=c.contents,g=c.filename,i=c.webInfo,j={currentDirectory:q.getPath(g),filename:g,rootFilename:g,relativeUrls:k.relativeUrls};if(j.entryPath=j.currentDirectory,j.rootpath=k.rootpath||j.currentDirectory,i){i.remaining=h;var l=s.getCSS(g,i,k.modifyVars);if(!e&&l)return i.local=!0,void b(null,l,d,a,i,g)}r.remove(g),k.rootFileInfo=j,n.render(d,k,function(c,e){c?(c.href=g,b(c)):(e.css=f(e.css),s.setCSS(a.href,i.lastModified,k.modifyVars,e.css),b(null,e.css,d,a,i,g))})}var k=g(c);d(k,a),k.mime=a.type,i&&(k.modifyVars=i),q.loadFile(a.href,null,k,o,function(a,c){return a?void b(a):void j(c)})}function k(a,b,c){for(var d=0;d<n.sheets.length;d++)j(n.sheets[d],a,b,n.sheets.length-(d+1),c)}function l(){"development"===n.env&&(n.watchTimer=setInterval(function(){n.watchMode&&(q.clearFileCache(),k(function(a,c,d,f,g){a?r.add(a,a.href||f.href):c&&e.createCSS(b.document,c,f)}))},c.poll))}var m=b.document,n=a("../less")();n.options=c;var o=n.environment,p=a("./file-manager")(c,n.logger),q=new p;o.addFileManager(q),n.FileManager=p,a("./log-listener")(n,c);var r=a("./error-reporting")(b,n,c),s=n.cache=c.cache||a("./cache")(b,c,n.logger);a("./image-size")(n.environment),c.functions&&n.functions.functionRegistry.addMultiple(c.functions);var t=/^text\/(x-)?less$/;return n.watch=function(){return n.watchMode||(n.env="development",l()),this.watchMode=!0,!0},n.unwatch=function(){return clearInterval(n.watchTimer),this.watchMode=!1,!1},n.registerStylesheetsImmediately=function(){var a=m.getElementsByTagName("link");n.sheets=[];for(var b=0;b<a.length;b++)("stylesheet/less"===a[b].rel||a[b].rel.match(/stylesheet/)&&a[b].type.match(t))&&n.sheets.push(a[b])},n.registerStylesheets=function(){return new Promise(function(a,b){n.registerStylesheetsImmediately(),a()})},n.modifyVars=function(a){return n.refresh(!0,a,!1)},n.refresh=function(a,c,d){return(a||d)&&d!==!1&&q.clearFileCache(),new Promise(function(d,f){var g,h,j,l;g=h=new Date,l=n.sheets.length,0===l?(h=new Date,j=h-g,n.logger.info("Less has finished and no sheets were loaded."),d({startTime:g,endTime:h,totalMilliseconds:j,sheets:n.sheets.length})):k(function(a,c,i,k,m){return a?(r.add(a,a.href||k.href),void f(a)):(n.logger.info(m.local?"Loading "+k.href+" from cache.":"Rendered "+k.href+" successfully."),e.createCSS(b.document,c,k),n.logger.info("CSS for "+k.href+" generated in "+(new Date-h)+"ms"),l--,0===l&&(j=new Date-g,n.logger.info("Less has finished. CSS generated in "+j+"ms"),d({startTime:g,endTime:h,totalMilliseconds:j,sheets:n.sheets.length})),void(h=new Date))},a,c),i(c)})},n.refreshStyles=i,n}},{"../less":31,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./utils":10}],9:[function(a,b,c){b.exports=function(a,b){var c=4,d=3,e=2,f=1;b.logLevel="undefined"!=typeof b.logLevel?b.logLevel:"development"===b.env?d:f,b.loggers||(b.loggers=[{debug:function(a){b.logLevel>=c&&console.log(a)},info:function(a){b.logLevel>=d&&console.log(a)},warn:function(a){b.logLevel>=e&&console.warn(a)},error:function(a){b.logLevel>=f&&console.error(a)}}]);for(var g=0;g<b.loggers.length;g++)a.logger.addListener(b.loggers[g])}},{}],10:[function(a,b,c){b.exports={extractId:function(a){return a.replace(/^[a-z-]+:\/+?[^\/]+/,"").replace(/[\?\&]livereload=\w+/,"").replace(/^\//,"").replace(/\.[a-zA-Z]+$/,"").replace(/[^\.\w-]+/g,"-").replace(/\./g,":")},addDataAttr:function(a,b){for(var c in b.dataset)if(b.dataset.hasOwnProperty(c))if("env"===c||"dumpLineNumbers"===c||"rootpath"===c||"errorReporting"===c)a[c]=b.dataset[c];else try{a[c]=JSON.parse(b.dataset[c])}catch(d){}}}},{}],11:[function(a,b,c){var d={};b.exports=d;var e=function(a,b,c){if(a)for(var d=0;d<c.length;d++)a.hasOwnProperty(c[d])&&(b[c[d]]=a[c[d]])},f=["paths","relativeUrls","rootpath","strictImports","insecure","dumpLineNumbers","compress","syncImport","chunkInput","mime","useFileCache","processImports","pluginManager"];d.Parse=function(a){e(a,this,f),"string"==typeof this.paths&&(this.paths=[this.paths])};var g=["paths","compress","ieCompat","strictMath","strictUnits","sourceMap","importMultiple","urlArgs","javascriptEnabled","pluginManager","importantScope"];d.Eval=function(a,b){e(a,this,g),"string"==typeof this.paths&&(this.paths=[this.paths]),this.frames=b||[],this.importantScope=this.importantScope||[]},d.Eval.prototype.inParenthesis=function(){this.parensStack||(this.parensStack=[]),this.parensStack.push(!0)},d.Eval.prototype.outOfParenthesis=function(){this.parensStack.pop()},d.Eval.prototype.isMathOn=function(){return!this.strictMath||this.parensStack&&this.parensStack.length},d.Eval.prototype.isPathRelative=function(a){return!/^(?:[a-z-]+:|\/|#)/i.test(a)},d.Eval.prototype.normalizePath=function(a){var b,c=a.split("/").reverse();for(a=[];0!==c.length;)switch(b=c.pop()){case".":break;case"..":0===a.length||".."===a[a.length-1]?a.push(b):a.pop();break;default:a.push(b)}return a.join("/")}},{}],12:[function(a,b,c){b.exports={aliceblue:"#f0f8ff",antiquewhite:"#faebd7",aqua:"#00ffff",aquamarine:"#7fffd4",azure:"#f0ffff",beige:"#f5f5dc",bisque:"#ffe4c4",black:"#000000",blanchedalmond:"#ffebcd",blue:"#0000ff",blueviolet:"#8a2be2",brown:"#a52a2a",burlywood:"#deb887",cadetblue:"#5f9ea0",chartreuse:"#7fff00",chocolate:"#d2691e",coral:"#ff7f50",cornflowerblue:"#6495ed",cornsilk:"#fff8dc",crimson:"#dc143c",cyan:"#00ffff",darkblue:"#00008b",darkcyan:"#008b8b",darkgoldenrod:"#b8860b",darkgray:"#a9a9a9",darkgrey:"#a9a9a9",darkgreen:"#006400",darkkhaki:"#bdb76b",darkmagenta:"#8b008b",darkolivegreen:"#556b2f",darkorange:"#ff8c00",darkorchid:"#9932cc",darkred:"#8b0000",darksalmon:"#e9967a",darkseagreen:"#8fbc8f",darkslateblue:"#483d8b",darkslategray:"#2f4f4f",darkslategrey:"#2f4f4f",darkturquoise:"#00ced1",darkviolet:"#9400d3",deeppink:"#ff1493",deepskyblue:"#00bfff",dimgray:"#696969",dimgrey:"#696969",dodgerblue:"#1e90ff",firebrick:"#b22222",floralwhite:"#fffaf0",forestgreen:"#228b22",fuchsia:"#ff00ff",gainsboro:"#dcdcdc",ghostwhite:"#f8f8ff",gold:"#ffd700",goldenrod:"#daa520",gray:"#808080",grey:"#808080",green:"#008000",greenyellow:"#adff2f",honeydew:"#f0fff0",hotpink:"#ff69b4",indianred:"#cd5c5c",indigo:"#4b0082",ivory:"#fffff0",khaki:"#f0e68c",lavender:"#e6e6fa",lavenderblush:"#fff0f5",lawngreen:"#7cfc00",lemonchiffon:"#fffacd",lightblue:"#add8e6",lightcoral:"#f08080",lightcyan:"#e0ffff",lightgoldenrodyellow:"#fafad2",lightgray:"#d3d3d3",lightgrey:"#d3d3d3",lightgreen:"#90ee90",lightpink:"#ffb6c1",lightsalmon:"#ffa07a",lightseagreen:"#20b2aa",lightskyblue:"#87cefa",lightslategray:"#778899",lightslategrey:"#778899",lightsteelblue:"#b0c4de",lightyellow:"#ffffe0",lime:"#00ff00",limegreen:"#32cd32",linen:"#faf0e6",magenta:"#ff00ff",maroon:"#800000",mediumaquamarine:"#66cdaa",mediumblue:"#0000cd",mediumorchid:"#ba55d3",mediumpurple:"#9370d8",mediumseagreen:"#3cb371",mediumslateblue:"#7b68ee",mediumspringgreen:"#00fa9a",mediumturquoise:"#48d1cc",mediumvioletred:"#c71585",midnightblue:"#191970",mintcream:"#f5fffa",mistyrose:"#ffe4e1",moccasin:"#ffe4b5",navajowhite:"#ffdead",navy:"#000080",oldlace:"#fdf5e6",olive:"#808000",olivedrab:"#6b8e23",orange:"#ffa500",orangered:"#ff4500",orchid:"#da70d6",palegoldenrod:"#eee8aa",palegreen:"#98fb98",paleturquoise:"#afeeee",palevioletred:"#d87093",papayawhip:"#ffefd5",peachpuff:"#ffdab9",peru:"#cd853f",pink:"#ffc0cb",plum:"#dda0dd",powderblue:"#b0e0e6",purple:"#800080",rebeccapurple:"#663399",red:"#ff0000",rosybrown:"#bc8f8f",royalblue:"#4169e1",saddlebrown:"#8b4513",salmon:"#fa8072",sandybrown:"#f4a460",seagreen:"#2e8b57",seashell:"#fff5ee",sienna:"#a0522d",silver:"#c0c0c0",skyblue:"#87ceeb",slateblue:"#6a5acd",slategray:"#708090",slategrey:"#708090",snow:"#fffafa",springgreen:"#00ff7f",steelblue:"#4682b4",tan:"#d2b48c",teal:"#008080",thistle:"#d8bfd8",tomato:"#ff6347",turquoise:"#40e0d0",violet:"#ee82ee",wheat:"#f5deb3",white:"#ffffff",whitesmoke:"#f5f5f5",yellow:"#ffff00",yellowgreen:"#9acd32"}},{}],13:[function(a,b,c){b.exports={colors:a("./colors"),unitConversions:a("./unit-conversions")}},{"./colors":12,"./unit-conversions":14}],14:[function(a,b,c){b.exports={length:{m:1,cm:.01,mm:.001,"in":.0254,px:.0254/96,pt:.0254/72,pc:.0254/72*12},duration:{s:1,ms:.001},angle:{rad:1/(2*Math.PI),deg:1/360,grad:.0025,turn:1}}},{}],15:[function(a,b,c){var d=function(){};d.prototype.getPath=function(a){var b=a.lastIndexOf("?");return b>0&&(a=a.slice(0,b)),b=a.lastIndexOf("/"),b<0&&(b=a.lastIndexOf("\\")),b<0?"":a.slice(0,b+1)},d.prototype.tryAppendExtension=function(a,b){return/(\.[a-z]*$)|([\?;].*)$/.test(a)?a:a+b},d.prototype.tryAppendLessExtension=function(a){return this.tryAppendExtension(a,".less")},d.prototype.supportsSync=function(){return!1},d.prototype.alwaysMakePathsAbsolute=function(){return!1},d.prototype.isPathAbsolute=function(a){return/^(?:[a-z-]+:|\/|\\|#)/i.test(a)},d.prototype.join=function(a,b){return a?a+b:b},d.prototype.pathDiff=function(a,b){var c,d,e,f,g=this.extractUrlParts(a),h=this.extractUrlParts(b),i="";if(g.hostPart!==h.hostPart)return"";for(d=Math.max(h.directories.length,g.directories.length),c=0;c<d&&h.directories[c]===g.directories[c];c++);for(f=h.directories.slice(c),e=g.directories.slice(c),c=0;c<f.length-1;c++)i+="../";for(c=0;c<e.length-1;c++)i+=e[c]+"/";return i},d.prototype.extractUrlParts=function(a,b){var c,d,e=/^((?:[a-z-]+:)?\/{2}(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i,f=a.match(e),g={},h=[];if(!f)throw new Error("Could not parse sheet href - '"+a+"'");if(b&&(!f[1]||f[2])){if(d=b.match(e),!d)throw new Error("Could not parse page url - '"+b+"'");f[1]=f[1]||d[1]||"",f[2]||(f[3]=d[3]+f[3])}if(f[3]){for(h=f[3].replace(/\\/g,"/").split("/"),c=0;c<h.length;c++)"."===h[c]&&(h.splice(c,1),c-=1);for(c=0;c<h.length;c++)".."===h[c]&&c>0&&(h.splice(c-1,2),c-=2)}return g.hostPart=f[1],g.directories=h,g.path=(f[1]||"")+h.join("/"),g.fileUrl=g.path+(f[4]||""),g.url=g.fileUrl+(f[5]||""),g},b.exports=d},{}],16:[function(a,b,c){var d=a("../logger"),e=function(a,b){this.fileManagers=b||[],a=a||{};for(var c=["encodeBase64","mimeLookup","charsetLookup","getSourceMapGenerator"],d=[],e=d.concat(c),f=0;f<e.length;f++){var g=e[f],h=a[g];h?this[g]=h.bind(a):f<d.length&&this.warn("missing required function in environment - "+g)}};e.prototype.getFileManager=function(a,b,c,e,f){a||d.warn("getFileManager called with no filename.. Please report this issue. continuing."),null==b&&d.warn("getFileManager called with null directory.. Please report this issue. continuing.");var g=this.fileManagers;c.pluginManager&&(g=[].concat(g).concat(c.pluginManager.getFileManagers()));for(var h=g.length-1;h>=0;h--){var i=g[h];if(i[f?"supportsSync":"supports"](a,b,c,e))return i}return null},e.prototype.addFileManager=function(a){this.fileManagers.push(a)},e.prototype.clearFileManagers=function(){this.fileManagers=[]},b.exports=e},{"../logger":33}],17:[function(a,b,c){function d(a,b,c){var d,f,g,h,i=b.alpha,j=c.alpha,k=[];g=j+i*(1-j);for(var l=0;l<3;l++)d=b.rgb[l]/255,f=c.rgb[l]/255,h=a(d,f),g&&(h=(j*f+i*(d-j*(d+f-h)))/g),k[l]=255*h;return new e(k,g)}var e=a("../tree/color"),f=a("./function-registry"),g={multiply:function(a,b){return a*b},screen:function(a,b){return a+b-a*b},overlay:function(a,b){return a*=2,a<=1?g.multiply(a,b):g.screen(a-1,b)},softlight:function(a,b){var c=1,d=a;return b>.5&&(d=1,c=a>.25?Math.sqrt(a):((16*a-12)*a+4)*a),a-(1-2*b)*d*(c-a)},hardlight:function(a,b){return g.overlay(b,a)},difference:function(a,b){return Math.abs(a-b)},exclusion:function(a,b){return a+b-2*a*b},average:function(a,b){return(a+b)/2},negation:function(a,b){return 1-Math.abs(a+b-1)}};for(var h in g)g.hasOwnProperty(h)&&(d[h]=d.bind(null,g[h]));f.addMultiple(d)},{"../tree/color":50,"./function-registry":22}],18:[function(a,b,c){function d(a){return Math.min(1,Math.max(0,a))}function e(a){return h.hsla(a.h,a.s,a.l,a.a)}function f(a){if(a instanceof i)return parseFloat(a.unit.is("%")?a.value/100:a.value);if("number"==typeof a)return a;throw{type:"Argument",message:"color functions take numbers as parameters"}}function g(a,b){return a instanceof i&&a.unit.is("%")?parseFloat(a.value*b/100):f(a)}var h,i=a("../tree/dimension"),j=a("../tree/color"),k=a("../tree/quoted"),l=a("../tree/anonymous"),m=a("./function-registry");h={rgb:function(a,b,c){return h.rgba(a,b,c,1)},rgba:function(a,b,c,d){var e=[a,b,c].map(function(a){return g(a,255)});return d=f(d),new j(e,d)},hsl:function(a,b,c){return h.hsla(a,b,c,1)},hsla:function(a,b,c,e){function g(a){return a=a<0?a+1:a>1?a-1:a,6*a<1?i+(j-i)*a*6:2*a<1?j:3*a<2?i+(j-i)*(2/3-a)*6:i}var i,j;return a=f(a)%360/360,b=d(f(b)),c=d(f(c)),e=d(f(e)),j=c<=.5?c*(b+1):c+b-c*b,i=2*c-j,h.rgba(255*g(a+1/3),255*g(a),255*g(a-1/3),e)},hsv:function(a,b,c){return h.hsva(a,b,c,1)},hsva:function(a,b,c,d){a=f(a)%360/360*360,b=f(b),c=f(c),d=f(d);var e,g;e=Math.floor(a/60%6),g=a/60-e;var i=[c,c*(1-b),c*(1-g*b),c*(1-(1-g)*b)],j=[[0,3,1],[2,0,1],[1,0,3],[1,2,0],[3,1,0],[0,1,2]];return h.rgba(255*i[j[e][0]],255*i[j[e][1]],255*i[j[e][2]],d)},hue:function(a){return new i(a.toHSL().h)},saturation:function(a){return new i(100*a.toHSL().s,"%")},lightness:function(a){return new i(100*a.toHSL().l,"%")},hsvhue:function(a){return new i(a.toHSV().h)},hsvsaturation:function(a){return new i(100*a.toHSV().s,"%")},hsvvalue:function(a){return new i(100*a.toHSV().v,"%")},red:function(a){return new i(a.rgb[0])},green:function(a){return new i(a.rgb[1])},blue:function(a){return new i(a.rgb[2])},alpha:function(a){return new i(a.toHSL().a)},luma:function(a){return new i(a.luma()*a.alpha*100,"%")},luminance:function(a){var b=.2126*a.rgb[0]/255+.7152*a.rgb[1]/255+.0722*a.rgb[2]/255;return new i(b*a.alpha*100,"%")},saturate:function(a,b,c){if(!a.rgb)return null;var f=a.toHSL();return f.s+="undefined"!=typeof c&&"relative"===c.value?f.s*b.value/100:b.value/100,f.s=d(f.s),e(f)},desaturate:function(a,b,c){var f=a.toHSL();return f.s-="undefined"!=typeof c&&"relative"===c.value?f.s*b.value/100:b.value/100,f.s=d(f.s),e(f)},lighten:function(a,b,c){var f=a.toHSL();return f.l+="undefined"!=typeof c&&"relative"===c.value?f.l*b.value/100:b.value/100,f.l=d(f.l),e(f)},darken:function(a,b,c){var f=a.toHSL();return f.l-="undefined"!=typeof c&&"relative"===c.value?f.l*b.value/100:b.value/100,f.l=d(f.l),e(f)},fadein:function(a,b,c){var f=a.toHSL();return f.a+="undefined"!=typeof c&&"relative"===c.value?f.a*b.value/100:b.value/100,f.a=d(f.a),e(f)},fadeout:function(a,b,c){var f=a.toHSL();return f.a-="undefined"!=typeof c&&"relative"===c.value?f.a*b.value/100:b.value/100,f.a=d(f.a),e(f)},fade:function(a,b){var c=a.toHSL();return c.a=b.value/100,c.a=d(c.a),e(c)},spin:function(a,b){var c=a.toHSL(),d=(c.h+b.value)%360;return c.h=d<0?360+d:d,e(c)},mix:function(a,b,c){a.toHSL&&b.toHSL||(console.log(b.type),console.dir(b)),c||(c=new i(50));var d=c.value/100,e=2*d-1,f=a.toHSL().a-b.toHSL().a,g=((e*f==-1?e:(e+f)/(1+e*f))+1)/2,h=1-g,k=[a.rgb[0]*g+b.rgb[0]*h,a.rgb[1]*g+b.rgb[1]*h,a.rgb[2]*g+b.rgb[2]*h],l=a.alpha*d+b.alpha*(1-d);return new j(k,l)},greyscale:function(a){return h.desaturate(a,new i(100))},contrast:function(a,b,c,d){if(!a.rgb)return null;if("undefined"==typeof c&&(c=h.rgba(255,255,255,1)),"undefined"==typeof b&&(b=h.rgba(0,0,0,1)),b.luma()>c.luma()){var e=c;c=b,b=e}return d="undefined"==typeof d?.43:f(d),a.luma()<d?c:b},argb:function(a){return new l(a.toARGB())},color:function(a){if(a instanceof k&&/^#([a-f0-9]{6}|[a-f0-9]{3})$/i.test(a.value))return new j(a.value.slice(1));if(a instanceof j||(a=j.fromKeyword(a.value)))return a.value=void 0,a;throw{type:"Argument",message:"argument must be a color keyword or 3/6 digit hex e.g. #FFF"}},tint:function(a,b){return h.mix(h.rgb(255,255,255),a,b)},shade:function(a,b){return h.mix(h.rgb(0,0,0),a,b)}},m.addMultiple(h)},{"../tree/anonymous":46,"../tree/color":50,"../tree/dimension":56,"../tree/quoted":73,"./function-registry":22}],19:[function(a,b,c){b.exports=function(b){var c=a("../tree/quoted"),d=a("../tree/url"),e=a("./function-registry"),f=function(a,b){return new d(b,a.index,a.currentFileInfo).eval(a.context)},g=a("../logger");e.add("data-uri",function(a,e){e||(e=a,a=null);var h=a&&a.value,i=e.value,j=this.currentFileInfo,k=j.relativeUrls?j.currentDirectory:j.entryPath,l=i.indexOf("#"),m="";l!==-1&&(m=i.slice(l),i=i.slice(0,l));var n=b.getFileManager(i,k,this.context,b,!0);if(!n)return f(this,e);var o=!1;if(a)o=/;base64$/.test(h);else{if(h=b.mimeLookup(i),"image/svg+xml"===h)o=!1;else{var p=b.charsetLookup(h);o=["US-ASCII","UTF-8"].indexOf(p)<0}o&&(h+=";base64")}var q=n.loadFileSync(i,k,this.context,b);if(!q.contents)return g.warn("Skipped data-uri embedding of "+i+" because file not found"),f(this,e||a);var r=q.contents;if(o&&!b.encodeBase64)return f(this,e);r=o?b.encodeBase64(r):encodeURIComponent(r);var s="data:"+h+","+r+m,t=32768;return s.length>=t&&this.context.ieCompat!==!1?(g.warn("Skipped data-uri embedding of "+i+" because its size ("+s.length+" characters) exceeds IE8-safe "+t+" characters!"),f(this,e||a)):new d(new c('"'+s+'"',s,(!1),this.index,this.currentFileInfo),this.index,this.currentFileInfo)})}},{"../logger":33,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],20:[function(a,b,c){var d=a("../tree/keyword"),e=a("./function-registry"),f={eval:function(){var a=this.value_,b=this.error_;if(b)throw b;if(null!=a)return a?d.True:d.False},value:function(a){this.value_=a},error:function(a){this.error_=a},reset:function(){this.value_=this.error_=null}};e.add("default",f.eval.bind(f)),b.exports=f},{"../tree/keyword":65,"./function-registry":22}],21:[function(a,b,c){var d=a("../tree/expression"),e=function(a,b,c,d){this.name=a.toLowerCase(),this.index=c,this.context=b,this.currentFileInfo=d,this.func=b.frames[0].functionRegistry.get(this.name)};e.prototype.isValid=function(){return Boolean(this.func)},e.prototype.call=function(a){return Array.isArray(a)&&(a=a.filter(function(a){return"Comment"!==a.type}).map(function(a){if("Expression"===a.type){var b=a.value.filter(function(a){return"Comment"!==a.type});return 1===b.length?b[0]:new d(b)}return a})),this.func.apply(this,a)},b.exports=e},{"../tree/expression":59}],22:[function(a,b,c){function d(a){return{_data:{},add:function(a,b){a=a.toLowerCase(),this._data.hasOwnProperty(a),this._data[a]=b},addMultiple:function(a){Object.keys(a).forEach(function(b){this.add(b,a[b])}.bind(this))},get:function(b){return this._data[b]||a&&a.get(b)},inherit:function(){return d(this)}}}b.exports=d(null)},{}],23:[function(a,b,c){b.exports=function(b){var c={functionRegistry:a("./function-registry"),functionCaller:a("./function-caller")};return a("./default"),a("./color"),a("./color-blending"),a("./data-uri")(b),a("./math"),a("./number"),a("./string"),a("./svg")(b),a("./types"),c}},{"./color":18,"./color-blending":17,"./data-uri":19,"./default":20,"./function-caller":21,"./function-registry":22,"./math":25,"./number":26,"./string":27,"./svg":28,"./types":29}],24:[function(a,b,c){var d=a("../tree/dimension"),e=function(){};e._math=function(a,b,c){if(!(c instanceof d))throw{type:"Argument",message:"argument must be a number"};return null==b?b=c.unit:c=c.unify(),new d(a(parseFloat(c.value)),b)},b.exports=e},{"../tree/dimension":56}],25:[function(a,b,c){var d=a("./function-registry"),e=a("./math-helper.js"),f={ceil:null,floor:null,sqrt:null,abs:null,tan:"",sin:"",cos:"",atan:"rad",asin:"rad",acos:"rad"};for(var g in f)f.hasOwnProperty(g)&&(f[g]=e._math.bind(null,Math[g],f[g]));f.round=function(a,b){var c="undefined"==typeof b?0:b.value;return e._math(function(a){return a.toFixed(c)},null,a)},d.addMultiple(f)},{"./function-registry":22,"./math-helper.js":24}],26:[function(a,b,c){var d=a("../tree/dimension"),e=a("../tree/anonymous"),f=a("./function-registry"),g=a("./math-helper.js"),h=function(a,b){switch(b=Array.prototype.slice.call(b),b.length){case 0:throw{type:"Argument",message:"one or more arguments required"}}var c,f,g,h,i,j,k,l,m=[],n={};for(c=0;c<b.length;c++)if(g=b[c],g instanceof d)if(h=""===g.unit.toString()&&void 0!==l?new d(g.value,l).unify():g.unify(),j=""===h.unit.toString()&&void 0!==k?k:h.unit.toString(),k=""!==j&&void 0===k||""!==j&&""===m[0].unify().unit.toString()?j:k,l=""!==j&&void 0===l?g.unit.toString():l,f=void 0!==n[""]&&""!==j&&j===k?n[""]:n[j],void 0!==f)i=""===m[f].unit.toString()&&void 0!==l?new d(m[f].value,l).unify():m[f].unify(),(a&&h.value<i.value||!a&&h.value>i.value)&&(m[f]=g);else{if(void 0!==k&&j!==k)throw{type:"Argument",message:"incompatible types"};n[j]=m.length,m.push(g)}else Array.isArray(b[c].value)&&Array.prototype.push.apply(b,Array.prototype.slice.call(b[c].value));return 1==m.length?m[0]:(b=m.map(function(a){return a.toCSS(this.context)}).join(this.context.compress?",":", "),new e((a?"min":"max")+"("+b+")"))};f.addMultiple({min:function(){return h(!0,arguments)},max:function(){return h(!1,arguments)},convert:function(a,b){return a.convertTo(b.value)},pi:function(){return new d(Math.PI)},mod:function(a,b){return new d(a.value%b.value,a.unit)},pow:function(a,b){if("number"==typeof a&&"number"==typeof b)a=new d(a),b=new d(b);else if(!(a instanceof d&&b instanceof d))throw{type:"Argument",message:"arguments must be numbers"};return new d(Math.pow(a.value,b.value),a.unit)},percentage:function(a){var b=g._math(function(a){return 100*a},"%",a);return b}})},{"../tree/anonymous":46,"../tree/dimension":56,"./function-registry":22,"./math-helper.js":24}],27:[function(a,b,c){var d=a("../tree/quoted"),e=a("../tree/anonymous"),f=a("../tree/javascript"),g=a("./function-registry");g.addMultiple({e:function(a){return new e(a instanceof f?a.evaluated:a.value)},escape:function(a){return new e(encodeURI(a.value).replace(/=/g,"%3D").replace(/:/g,"%3A").replace(/#/g,"%23").replace(/;/g,"%3B").replace(/\(/g,"%28").replace(/\)/g,"%29"))},replace:function(a,b,c,e){var f=a.value;return c="Quoted"===c.type?c.value:c.toCSS(),f=f.replace(new RegExp(b.value,e?e.value:""),c),new d(a.quote||"",f,a.escaped)},"%":function(a){for(var b=Array.prototype.slice.call(arguments,1),c=a.value,e=0;e<b.length;e++)c=c.replace(/%[sda]/i,function(a){var c="Quoted"===b[e].type&&a.match(/s/i)?b[e].value:b[e].toCSS();return a.match(/[A-Z]$/)?encodeURIComponent(c):c});return c=c.replace(/%%/g,"%"),new d(a.quote||"",c,a.escaped)}})},{"../tree/anonymous":46,"../tree/javascript":63,
-"../tree/quoted":73,"./function-registry":22}],28:[function(a,b,c){b.exports=function(b){var c=a("../tree/dimension"),d=a("../tree/color"),e=a("../tree/expression"),f=a("../tree/quoted"),g=a("../tree/url"),h=a("./function-registry");h.add("svg-gradient",function(a){function b(){throw{type:"Argument",message:"svg-gradient expects direction, start_color [start_position], [color position,]..., end_color [end_position] or direction, color list"}}var h,i,j,k,l,m,n,o,p="linear",q='x="0" y="0" width="1" height="1"',r={compress:!1},s=a.toCSS(r);switch(2==arguments.length?(arguments[1].value.length<2&&b(),h=arguments[1].value):arguments.length<3?b():h=Array.prototype.slice.call(arguments,1),s){case"to bottom":i='x1="0%" y1="0%" x2="0%" y2="100%"';break;case"to right":i='x1="0%" y1="0%" x2="100%" y2="0%"';break;case"to bottom right":i='x1="0%" y1="0%" x2="100%" y2="100%"';break;case"to top right":i='x1="0%" y1="100%" x2="100%" y2="0%"';break;case"ellipse":case"ellipse at center":p="radial",i='cx="50%" cy="50%" r="75%"',q='x="-50" y="-50" width="101" height="101"';break;default:throw{type:"Argument",message:"svg-gradient direction must be 'to bottom', 'to right', 'to bottom right', 'to top right' or 'ellipse at center'"}}for(j='<?xml version="1.0" ?><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none"><'+p+'Gradient id="gradient" gradientUnits="userSpaceOnUse" '+i+">",k=0;k<h.length;k+=1)h[k]instanceof e?(l=h[k].value[0],m=h[k].value[1]):(l=h[k],m=void 0),l instanceof d&&((0===k||k+1===h.length)&&void 0===m||m instanceof c)||b(),n=m?m.toCSS(r):0===k?"0%":"100%",o=l.alpha,j+='<stop offset="'+n+'" stop-color="'+l.toRGB()+'"'+(o<1?' stop-opacity="'+o+'"':"")+"/>";return j+="</"+p+"Gradient><rect "+q+' fill="url(#gradient)" /></svg>',j=encodeURIComponent(j),j="data:image/svg+xml,"+j,new g(new f("'"+j+"'",j,(!1),this.index,this.currentFileInfo),this.index,this.currentFileInfo)})}},{"../tree/color":50,"../tree/dimension":56,"../tree/expression":59,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],29:[function(a,b,c){var d=a("../tree/keyword"),e=a("../tree/detached-ruleset"),f=a("../tree/dimension"),g=a("../tree/color"),h=a("../tree/quoted"),i=a("../tree/anonymous"),j=a("../tree/url"),k=a("../tree/operation"),l=a("./function-registry"),m=function(a,b){return a instanceof b?d.True:d.False},n=function(a,b){if(void 0===b)throw{type:"Argument",message:"missing the required second argument to isunit."};if(b="string"==typeof b.value?b.value:b,"string"!=typeof b)throw{type:"Argument",message:"Second argument to isunit should be a unit or a string."};return a instanceof f&&a.unit.is(b)?d.True:d.False},o=function(a){var b=Array.isArray(a.value)?a.value:Array(a);return b};l.addMultiple({isruleset:function(a){return m(a,e)},iscolor:function(a){return m(a,g)},isnumber:function(a){return m(a,f)},isstring:function(a){return m(a,h)},iskeyword:function(a){return m(a,d)},isurl:function(a){return m(a,j)},ispixel:function(a){return n(a,"px")},ispercentage:function(a){return n(a,"%")},isem:function(a){return n(a,"em")},isunit:n,unit:function(a,b){if(!(a instanceof f))throw{type:"Argument",message:"the first argument to unit must be a number"+(a instanceof k?". Have you forgotten parenthesis?":"")};return b=b?b instanceof d?b.value:b.toCSS():"",new f(a.value,b)},"get-unit":function(a){return new i(a.unit)},extract:function(a,b){return b=b.value-1,o(a)[b]},length:function(a){return new f(o(a).length)}})},{"../tree/anonymous":46,"../tree/color":50,"../tree/detached-ruleset":55,"../tree/dimension":56,"../tree/keyword":65,"../tree/operation":71,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],30:[function(a,b,c){var d=a("./contexts"),e=a("./parser/parser"),f=a("./plugins/function-importer");b.exports=function(a){var b=function(a,b){this.rootFilename=b.filename,this.paths=a.paths||[],this.contents={},this.contentsIgnoredChars={},this.mime=a.mime,this.error=null,this.context=a,this.queue=[],this.files={}};return b.prototype.push=function(b,c,g,h,i){var j=this;this.queue.push(b);var k=function(a,c,d){j.queue.splice(j.queue.indexOf(b),1);var e=d===j.rootFilename;h.optional&&a?i(null,{rules:[]},!1,null):(j.files[d]=c,a&&!j.error&&(j.error=a),i(a,c,e,d))},l={relativeUrls:this.context.relativeUrls,entryPath:g.entryPath,rootpath:g.rootpath,rootFilename:g.rootFilename},m=a.getFileManager(b,g.currentDirectory,this.context,a);if(!m)return void k({message:"Could not find a file-manager for "+b});c&&(b=m.tryAppendExtension(b,h.plugin?".js":".less"));var n=function(a){var b=a.filename,c=a.contents.replace(/^\uFEFF/,"");l.currentDirectory=m.getPath(b),l.relativeUrls&&(l.rootpath=m.join(j.context.rootpath||"",m.pathDiff(l.currentDirectory,l.entryPath)),!m.isPathAbsolute(l.rootpath)&&m.alwaysMakePathsAbsolute()&&(l.rootpath=m.join(l.entryPath,l.rootpath))),l.filename=b;var i=new d.Parse(j.context);i.processImports=!1,j.contents[b]=c,(g.reference||h.reference)&&(l.reference=!0),h.plugin?new f(i,l).eval(c,function(a,c){k(a,c,b)}):h.inline?k(null,c,b):new e(i,j,l).parse(c,function(a,c){k(a,c,b)})},o=m.loadFile(b,g.currentDirectory,this.context,a,function(a,b){a?k(a):n(b)});o&&o.then(n,k)},b}},{"./contexts":11,"./parser/parser":38,"./plugins/function-importer":40}],31:[function(a,b,c){b.exports=function(b,c){var d,e,f,g,h,i={version:[2,7,3],data:a("./data"),tree:a("./tree"),Environment:h=a("./environment/environment"),AbstractFileManager:a("./environment/abstract-file-manager"),environment:b=new h(b,c),visitors:a("./visitors"),Parser:a("./parser/parser"),functions:a("./functions")(b),contexts:a("./contexts"),SourceMapOutput:d=a("./source-map-output")(b),SourceMapBuilder:e=a("./source-map-builder")(d,b),ParseTree:f=a("./parse-tree")(e),ImportManager:g=a("./import-manager")(b),render:a("./render")(b,f,g),parse:a("./parse")(b,f,g),LessError:a("./less-error"),transformTree:a("./transform-tree"),utils:a("./utils"),PluginManager:a("./plugin-manager"),logger:a("./logger")};return i}},{"./contexts":11,"./data":13,"./environment/abstract-file-manager":15,"./environment/environment":16,"./functions":23,"./import-manager":30,"./less-error":32,"./logger":33,"./parse":35,"./parse-tree":34,"./parser/parser":38,"./plugin-manager":39,"./render":41,"./source-map-builder":42,"./source-map-output":43,"./transform-tree":44,"./tree":62,"./utils":83,"./visitors":87}],32:[function(a,b,c){var d=a("./utils"),e=b.exports=function(a,b,c){Error.call(this);var e=a.filename||c;if(b&&e){var f=b.contents[e],g=d.getLocation(a.index,f),h=g.line,i=g.column,j=a.call&&d.getLocation(a.call,f).line,k=f.split("\n");this.type=a.type||"Syntax",this.filename=e,this.index=a.index,this.line="number"==typeof h?h+1:null,this.callLine=j+1,this.callExtract=k[j],this.column=i,this.extract=[k[h-1],k[h],k[h+1]]}this.message=a.message,this.stack=a.stack};if("undefined"==typeof Object.create){var f=function(){};f.prototype=Error.prototype,e.prototype=new f}else e.prototype=Object.create(Error.prototype);e.prototype.constructor=e},{"./utils":83}],33:[function(a,b,c){b.exports={error:function(a){this._fireEvent("error",a)},warn:function(a){this._fireEvent("warn",a)},info:function(a){this._fireEvent("info",a)},debug:function(a){this._fireEvent("debug",a)},addListener:function(a){this._listeners.push(a)},removeListener:function(a){for(var b=0;b<this._listeners.length;b++)if(this._listeners[b]===a)return void this._listeners.splice(b,1)},_fireEvent:function(a,b){for(var c=0;c<this._listeners.length;c++){var d=this._listeners[c][a];d&&d(b)}},_listeners:[]}},{}],34:[function(a,b,c){var d=a("./less-error"),e=a("./transform-tree"),f=a("./logger");b.exports=function(a){var b=function(a,b){this.root=a,this.imports=b};return b.prototype.toCSS=function(b){var c,g,h={};try{c=e(this.root,b)}catch(i){throw new d(i,this.imports)}try{var j=Boolean(b.compress);j&&f.warn("The compress option has been deprecated. We recommend you use a dedicated css minifier, for instance see less-plugin-clean-css.");var k={compress:j,dumpLineNumbers:b.dumpLineNumbers,strictUnits:Boolean(b.strictUnits),numPrecision:8};b.sourceMap?(g=new a(b.sourceMap),h.css=g.toCSS(c,k,this.imports)):h.css=c.toCSS(k)}catch(i){throw new d(i,this.imports)}if(b.pluginManager)for(var l=b.pluginManager.getPostProcessors(),m=0;m<l.length;m++)h.css=l[m].process(h.css,{sourceMap:g,options:b,imports:this.imports});b.sourceMap&&(h.map=g.getExternalSourceMap()),h.imports=[];for(var n in this.imports.files)this.imports.files.hasOwnProperty(n)&&n!==this.imports.rootFilename&&h.imports.push(n);return h},b}},{"./less-error":32,"./logger":33,"./transform-tree":44}],35:[function(a,b,c){var d,e=a("./contexts"),f=a("./parser/parser"),g=a("./plugin-manager");b.exports=function(b,c,h){var i=function(b,c,j){if(c=c||{},"function"==typeof c&&(j=c,c={}),!j){d||(d="undefined"==typeof Promise?a("promise"):Promise);var k=this;return new d(function(a,d){i.call(k,b,c,function(b,c){b?d(b):a(c)})})}var l,m,n=new g(this);if(n.addPlugins(c.plugins),c.pluginManager=n,l=new e.Parse(c),c.rootFileInfo)m=c.rootFileInfo;else{var o=c.filename||"input",p=o.replace(/[^\/\\]*$/,"");m={filename:o,relativeUrls:l.relativeUrls,rootpath:l.rootpath||"",currentDirectory:p,entryPath:p,rootFilename:o},m.rootpath&&"/"!==m.rootpath.slice(-1)&&(m.rootpath+="/")}var q=new h(l,m);new f(l,q,m).parse(b,function(a,b){return a?j(a):void j(null,b,q,c)},c)};return i}},{"./contexts":11,"./parser/parser":38,"./plugin-manager":39,promise:void 0}],36:[function(a,b,c){b.exports=function(a,b){function c(b){var c=h-q;c<512&&!b||!c||(p.push(a.slice(q,h+1)),q=h+1)}var d,e,f,g,h,i,j,k,l,m=a.length,n=0,o=0,p=[],q=0;for(h=0;h<m;h++)if(j=a.charCodeAt(h),!(j>=97&&j<=122||j<34))switch(j){case 40:o++,e=h;continue;case 41:if(--o<0)return b("missing opening `(`",h);continue;case 59:o||c();continue;case 123:n++,d=h;continue;case 125:if(--n<0)return b("missing opening `{`",h);n||o||c();continue;case 92:if(h<m-1){h++;continue}return b("unescaped `\\`",h);case 34:case 39:case 96:for(l=0,i=h,h+=1;h<m;h++)if(k=a.charCodeAt(h),!(k>96)){if(k==j){l=1;break}if(92==k){if(h==m-1)return b("unescaped `\\`",h);h++}}if(l)continue;return b("unmatched `"+String.fromCharCode(j)+"`",i);case 47:if(o||h==m-1)continue;if(k=a.charCodeAt(h+1),47==k)for(h+=2;h<m&&(k=a.charCodeAt(h),!(k<=13)||10!=k&&13!=k);h++);else if(42==k){for(f=i=h,h+=2;h<m-1&&(k=a.charCodeAt(h),125==k&&(g=h),42!=k||47!=a.charCodeAt(h+1));h++);if(h==m-1)return b("missing closing `*/`",i);h++}continue;case 42:if(h<m-1&&47==a.charCodeAt(h+1))return b("unmatched `/*`",h);continue}return 0!==n?f>d&&g>f?b("missing closing `}` or `*/`",d):b("missing closing `}`",d):0!==o?b("missing closing `)`",e):(c(!0),p)}},{}],37:[function(a,b,c){var d=a("./chunker");b.exports=function(){function a(d){for(var e,f,j,p=k.i,q=c,s=k.i-i,t=k.i+h.length-s,u=k.i+=d,v=b;k.i<t;k.i++){if(e=v.charCodeAt(k.i),k.autoCommentAbsorb&&e===r){if(f=v.charAt(k.i+1),"/"===f){j={index:k.i,isLineComment:!0};var w=v.indexOf("\n",k.i+2);w<0&&(w=t),k.i=w,j.text=v.substr(j.index,k.i-j.index),k.commentStore.push(j);continue}if("*"===f){var x=v.indexOf("*/",k.i+2);if(x>=0){j={index:k.i,text:v.substr(k.i,x+2-k.i),isLineComment:!1},k.i+=j.text.length-1,k.commentStore.push(j);continue}}break}if(e!==l&&e!==n&&e!==m&&e!==o)break}if(h=h.slice(d+k.i-u+s),i=k.i,!h.length){if(c<g.length-1)return h=g[++c],a(0),!0;k.finished=!0}return p!==k.i||q!==c}var b,c,e,f,g,h,i,j=[],k={},l=32,m=9,n=10,o=13,p=43,q=44,r=47,s=57;return k.save=function(){i=k.i,j.push({current:h,i:k.i,j:c})},k.restore=function(a){(k.i>e||k.i===e&&a&&!f)&&(e=k.i,f=a);var b=j.pop();h=b.current,i=k.i=b.i,c=b.j},k.forget=function(){j.pop()},k.isWhitespace=function(a){var c=k.i+(a||0),d=b.charCodeAt(c);return d===l||d===o||d===m||d===n},k.$re=function(b){k.i>i&&(h=h.slice(k.i-i),i=k.i);var c=b.exec(h);return c?(a(c[0].length),"string"==typeof c?c:1===c.length?c[0]:c):null},k.$char=function(c){return b.charAt(k.i)!==c?null:(a(1),c)},k.$str=function(c){for(var d=c.length,e=0;e<d;e++)if(b.charAt(k.i+e)!==c.charAt(e))return null;return a(d),c},k.$quoted=function(){var c=b.charAt(k.i);if("'"===c||'"'===c){for(var d=b.length,e=k.i,f=1;f+e<d;f++){var g=b.charAt(f+e);switch(g){case"\\":f++;continue;case"\r":case"\n":break;case c:var h=b.substr(e,f+1);return a(f+1),h}}return null}},k.autoCommentAbsorb=!0,k.commentStore=[],k.finished=!1,k.peek=function(a){if("string"==typeof a){for(var c=0;c<a.length;c++)if(b.charAt(k.i+c)!==a.charAt(c))return!1;return!0}return a.test(h)},k.peekChar=function(a){return b.charAt(k.i)===a},k.currentChar=function(){return b.charAt(k.i)},k.getInput=function(){return b},k.peekNotNumeric=function(){var a=b.charCodeAt(k.i);return a>s||a<p||a===r||a===q},k.start=function(f,j,l){b=f,k.i=c=i=e=0,g=j?d(f,l):[f],h=g[0],a(0)},k.end=function(){var a,c=k.i>=b.length;return k.i<e&&(a=f,k.i=e),{isFinished:c,furthest:k.i,furthestPossibleErrorMessage:a,furthestReachedEnd:k.i>=b.length-1,furthestChar:b[k.i]}},k}},{"./chunker":36}],38:[function(a,b,c){var d=a("../less-error"),e=a("../tree"),f=a("../visitors"),g=a("./parser-input"),h=a("../utils"),i=function j(a,b,c){function i(a,e){throw new d({index:o.i,filename:c.filename,type:e||"Syntax",message:a},b)}function k(a,b,c){var d=a instanceof Function?a.call(n):o.$re(a);return d?d:void i(b||("string"==typeof a?"expected '"+a+"' got '"+o.currentChar()+"'":"unexpected token"))}function l(a,b){return o.$char(a)?a:void i(b||"expected '"+a+"' got '"+o.currentChar()+"'")}function m(a){var b=c.filename;return{lineNumber:h.getLocation(a,o.getInput()).line+1,fileName:b}}var n,o=g();return{parse:function(g,h,i){var k,l,m,n,p=null,q="";if(l=i&&i.globalVars?j.serializeVars(i.globalVars)+"\n":"",m=i&&i.modifyVars?"\n"+j.serializeVars(i.modifyVars):"",a.pluginManager)for(var r=a.pluginManager.getPreProcessors(),s=0;s<r.length;s++)g=r[s].process(g,{context:a,imports:b,fileInfo:c});(l||i&&i.banner)&&(q=(i&&i.banner?i.banner:"")+l,n=b.contentsIgnoredChars,n[c.filename]=n[c.filename]||0,n[c.filename]+=q.length),g=g.replace(/\r\n?/g,"\n"),g=q+g.replace(/^\uFEFF/,"")+m,b.contents[c.filename]=g;try{o.start(g,a.chunkInput,function(a,e){throw new d({index:e,type:"Parse",message:a,filename:c.filename},b)}),k=new e.Ruleset(null,this.parsers.primary()),k.root=!0,k.firstRoot=!0}catch(t){return h(new d(t,b,c.filename))}var u=o.end();if(!u.isFinished){var v=u.furthestPossibleErrorMessage;v||(v="Unrecognised input","}"===u.furthestChar?v+=". Possibly missing opening '{'":")"===u.furthestChar?v+=". Possibly missing opening '('":u.furthestReachedEnd&&(v+=". Possibly missing something")),p=new d({type:"Parse",message:v,index:u.furthest,filename:c.filename},b)}var w=function(a){return a=p||a||b.error,a?(a instanceof d||(a=new d(a,b,c.filename)),h(a)):h(null,k)};return a.processImports===!1?w():void new f.ImportVisitor(b,w).run(k)},parsers:n={primary:function(){for(var a,b=this.mixin,c=[];;){for(;;){if(a=this.comment(),!a)break;c.push(a)}if(o.finished)break;if(o.peek("}"))break;if(a=this.extendRule())c=c.concat(a);else if(a=b.definition()||this.rule()||this.ruleset()||b.call()||this.rulesetCall()||this.entities.call()||this.directive())c.push(a);else{for(var d=!1;o.$char(";");)d=!0;if(!d)break}}return c},comment:function(){if(o.commentStore.length){var a=o.commentStore.shift();return new e.Comment(a.text,a.isLineComment,a.index,c)}},entities:{quoted:function(){var a,b=o.i,d=!1;return o.save(),o.$char("~")&&(d=!0),(a=o.$quoted())?(o.forget(),new e.Quoted(a.charAt(0),a.substr(1,a.length-2),d,b,c)):void o.restore()},keyword:function(){var a=o.$char("%")||o.$re(/^[_A-Za-z-][_A-Za-z0-9-]*/);if(a)return e.Color.fromKeyword(a)||new e.Keyword(a)},call:function(){var a,b,d,f,g=o.i;if(!o.peek(/^url\(/i))return o.save(),(a=o.$re(/^([\w-]+|%|progid:[\w\.]+)\(/))?(a=a[1],b=a.toLowerCase(),"alpha"===b&&(f=n.alpha())?(o.forget(),f):(d=this.arguments(),o.$char(")")?(o.forget(),new e.Call(a,d,g,c)):void o.restore("Could not parse call arguments or missing ')'"))):void o.forget()},arguments:function(){var a,b,c,d=[],f=[],g=[];for(o.save();;){if(c=n.detachedRuleset()||this.assignment()||n.expression(),!c)break;b=c,c.value&&1==c.value.length&&(b=c.value[0]),b&&g.push(b),f.push(b),o.$char(",")||(o.$char(";")||a)&&(a=!0,g.length>1&&(b=new e.Value(g)),d.push(b),g=[])}return o.forget(),a?d:f},literal:function(){return this.dimension()||this.color()||this.quoted()||this.unicodeDescriptor()},assignment:function(){var a,b;return o.save(),(a=o.$re(/^\w+(?=\s?=)/i))&&o.$char("=")&&(b=n.entity())?(o.forget(),new e.Assignment(a,b)):void o.restore()},url:function(){var a,b=o.i;return o.autoCommentAbsorb=!1,o.$str("url(")?(a=this.quoted()||this.variable()||o.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/)||"",o.autoCommentAbsorb=!0,l(")"),new e.URL(null!=a.value||a instanceof e.Variable?a:new e.Anonymous(a),b,c)):void(o.autoCommentAbsorb=!0)},variable:function(){var a,b=o.i;if("@"===o.currentChar()&&(a=o.$re(/^@@?[\w-]+/)))return new e.Variable(a,b,c)},variableCurly:function(){var a,b=o.i;if("@"===o.currentChar()&&(a=o.$re(/^@\{([\w-]+)\}/)))return new e.Variable("@"+a[1],b,c)},color:function(){var a;if("#"===o.currentChar()&&(a=o.$re(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))){var b=a.input.match(/^#([\w]+).*/);return b=b[1],b.match(/^[A-Fa-f0-9]+$/)||i("Invalid HEX color code"),new e.Color(a[1],(void 0),"#"+b)}},colorKeyword:function(){o.save();var a=o.autoCommentAbsorb;o.autoCommentAbsorb=!1;var b=o.$re(/^[_A-Za-z-][_A-Za-z0-9-]+/);if(o.autoCommentAbsorb=a,!b)return void o.forget();o.restore();var c=e.Color.fromKeyword(b);return c?(o.$str(b),c):void 0},dimension:function(){if(!o.peekNotNumeric()){var a=o.$re(/^([+-]?\d*\.?\d+)(%|[a-z_]+)?/i);return a?new e.Dimension(a[1],a[2]):void 0}},unicodeDescriptor:function(){var a;if(a=o.$re(/^U\+[0-9a-fA-F?]+(\-[0-9a-fA-F?]+)?/))return new e.UnicodeDescriptor(a[0])},javascript:function(){var a,b=o.i;o.save();var d=o.$char("~"),f=o.$char("`");return f?(a=o.$re(/^[^`]*`/))?(o.forget(),new e.JavaScript(a.substr(0,a.length-1),Boolean(d),b,c)):void o.restore("invalid javascript definition"):void o.restore()}},variable:function(){var a;if("@"===o.currentChar()&&(a=o.$re(/^(@[\w-]+)\s*:/)))return a[1]},rulesetCall:function(){var a;if("@"===o.currentChar()&&(a=o.$re(/^(@[\w-]+)\(\s*\)\s*;/)))return new e.RulesetCall(a[1])},extend:function(a){var b,d,f,g,h,j=o.i;if(o.$str(a?"&:extend(":":extend(")){do{for(f=null,b=null;!(f=o.$re(/^(all)(?=\s*(\)|,))/))&&(d=this.element());)b?b.push(d):b=[d];f=f&&f[1],b||i("Missing target selector for :extend()."),h=new e.Extend(new e.Selector(b),f,j,c),g?g.push(h):g=[h]}while(o.$char(","));return k(/^\)/),a&&k(/^;/),g}},extendRule:function(){return this.extend(!0)},mixin:{call:function(){var a,b,d,f,g,h,i=o.currentChar(),j=!1,k=o.i;if("."===i||"#"===i){for(o.save();;){if(a=o.i,f=o.$re(/^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/),!f)break;d=new e.Element(g,f,a,c),b?b.push(d):b=[d],g=o.$char(">")}return b&&(o.$char("(")&&(h=this.args(!0).args,l(")")),n.important()&&(j=!0),n.end())?(o.forget(),new e.mixin.Call(b,h,k,c,j)):void o.restore()}},args:function(a){var b,c,d,f,g,h,j,k=n.entities,l={args:null,variadic:!1},m=[],p=[],q=[];for(o.save();;){if(a)h=n.detachedRuleset()||n.expression();else{if(o.commentStore.length=0,o.$str("...")){l.variadic=!0,o.$char(";")&&!b&&(b=!0),(b?p:q).push({variadic:!0});break}h=k.variable()||k.literal()||k.keyword()}if(!h)break;f=null,h.throwAwayComments&&h.throwAwayComments(),g=h;var r=null;if(a?h.value&&1==h.value.length&&(r=h.value[0]):r=h,r&&r instanceof e.Variable)if(o.$char(":")){if(m.length>0&&(b&&i("Cannot mix ; and , as delimiter types"),c=!0),g=n.detachedRuleset()||n.expression(),!g){if(!a)return o.restore(),l.args=[],l;i("could not understand value for named argument")}f=d=r.name}else if(o.$str("...")){if(!a){l.variadic=!0,o.$char(";")&&!b&&(b=!0),(b?p:q).push({name:h.name,variadic:!0});break}j=!0}else a||(d=f=r.name,g=null);g&&m.push(g),q.push({name:f,value:g,expand:j}),o.$char(",")||(o.$char(";")||b)&&(c&&i("Cannot mix ; and , as delimiter types"),b=!0,m.length>1&&(g=new e.Value(m)),p.push({name:d,value:g,expand:j}),d=null,m=[],c=!1)}return o.forget(),l.args=b?p:q,l},definition:function(){var a,b,c,d,f=[],g=!1;if(!("."!==o.currentChar()&&"#"!==o.currentChar()||o.peek(/^[^{]*\}/)))if(o.save(),b=o.$re(/^([#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+)\s*\(/)){a=b[1];var h=this.args(!1);if(f=h.args,g=h.variadic,!o.$char(")"))return void o.restore("Missing closing ')'");if(o.commentStore.length=0,o.$str("when")&&(d=k(n.conditions,"expected condition")),c=n.block())return o.forget(),new e.mixin.Definition(a,f,c,d,g);o.restore()}else o.forget()}},entity:function(){var a=this.entities;return this.comment()||a.literal()||a.variable()||a.url()||a.call()||a.keyword()||a.javascript()},end:function(){return o.$char(";")||o.peek("}")},alpha:function(){var a;if(o.$re(/^opacity=/i))return a=o.$re(/^\d+/),a||(a=k(this.entities.variable,"Could not parse alpha")),l(")"),new e.Alpha(a)},element:function(){var a,b,d,f=o.i;if(b=this.combinator(),a=o.$re(/^(?:\d+\.\d+|\d+)%/)||o.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/)||o.$char("*")||o.$char("&")||this.attribute()||o.$re(/^\([^&()@]+\)/)||o.$re(/^[\.#:](?=@)/)||this.entities.variableCurly(),a||(o.save(),o.$char("(")?(d=this.selector())&&o.$char(")")?(a=new e.Paren(d),o.forget()):o.restore("Missing closing ')'"):o.forget()),a)return new e.Element(b,a,f,c)},combinator:function(){var a=o.currentChar();if("/"===a){o.save();var b=o.$re(/^\/[a-z]+\//i);if(b)return o.forget(),new e.Combinator(b);o.restore()}if(">"===a||"+"===a||"~"===a||"|"===a||"^"===a){for(o.i++,"^"===a&&"^"===o.currentChar()&&(a="^^",o.i++);o.isWhitespace();)o.i++;return new e.Combinator(a)}return new e.Combinator(o.isWhitespace(-1)?" ":null)},lessSelector:function(){return this.selector(!0)},selector:function(a){for(var b,d,f,g,h,j,l,m=o.i;(a&&(d=this.extend())||a&&(j=o.$str("when"))||(g=this.element()))&&(j?l=k(this.conditions,"expected condition"):l?i("CSS guard can only be used at the end of selector"):d?h=h?h.concat(d):d:(h&&i("Extend can only be used at the end of selector"),f=o.currentChar(),b?b.push(g):b=[g],g=null),"{"!==f&&"}"!==f&&";"!==f&&","!==f&&")"!==f););return b?new e.Selector(b,h,l,m,c):void(h&&i("Extend must be used to extend a selector, it cannot be used on its own"))},attribute:function(){if(o.$char("[")){var a,b,c,d=this.entities;return(a=d.variableCurly())||(a=k(/^(?:[_A-Za-z0-9-\*]*\|)?(?:[_A-Za-z0-9-]|\\.)+/)),c=o.$re(/^[|~*$^]?=/),c&&(b=d.quoted()||o.$re(/^[0-9]+%/)||o.$re(/^[\w-]+/)||d.variableCurly()),l("]"),new e.Attribute(a,c,b)}},block:function(){var a;if(o.$char("{")&&(a=this.primary())&&o.$char("}"))return a},blockRuleset:function(){var a=this.block();return a&&(a=new e.Ruleset(null,a)),a},detachedRuleset:function(){var a=this.blockRuleset();if(a)return new e.DetachedRuleset(a)},ruleset:function(){var b,c,d,f;for(o.save(),a.dumpLineNumbers&&(f=m(o.i));;){if(c=this.lessSelector(),!c)break;if(b?b.push(c):b=[c],o.commentStore.length=0,c.condition&&b.length>1&&i("Guards are only currently allowed on a single selector."),!o.$char(","))break;c.condition&&i("Guards are only currently allowed on a single selector."),o.commentStore.length=0}if(b&&(d=this.block())){o.forget();var g=new e.Ruleset(b,d,a.strictImports);return a.dumpLineNumbers&&(g.debugInfo=f),g}o.restore()},rule:function(b){var d,f,g,h,i,j=o.i,k=o.currentChar();if("."!==k&&"#"!==k&&"&"!==k&&":"!==k)if(o.save(),d=this.variable()||this.ruleProperty()){if(i="string"==typeof d,i&&(f=this.detachedRuleset()),o.commentStore.length=0,!f){h=!i&&d.length>1&&d.pop().value;var l=!b&&(a.compress||i);if(l&&(f=this.value()),!f&&(f=this.anonymousValue()))return o.forget(),new e.Rule(d,f,(!1),h,j,c);l||f||(f=this.value()),g=this.important()}if(f&&this.end())return o.forget(),new e.Rule(d,f,g,h,j,c);if(o.restore(),f&&!b)return this.rule(!0)}else o.forget()},anonymousValue:function(){var a=o.$re(/^([^@+\/'"*`(;{}-]*);/);if(a)return new e.Anonymous(a[1])},"import":function(){var a,b,d=o.i,f=o.$re(/^@import?\s+/);if(f){var g=(f?this.importOptions():null)||{};if(a=this.entities.quoted()||this.entities.url())return b=this.mediaFeatures(),o.$char(";")||(o.i=d,i("missing semi-colon or unrecognised media features on import")),b=b&&new e.Value(b),new e.Import(a,b,g,d,c);o.i=d,i("malformed import statement")}},importOptions:function(){var a,b,c,d={};if(!o.$char("("))return null;do if(a=this.importOption()){switch(b=a,c=!0,b){case"css":b="less",c=!1;break;case"once":b="multiple",c=!1}if(d[b]=c,!o.$char(","))break}while(a);return l(")"),d},importOption:function(){var a=o.$re(/^(less|css|multiple|once|inline|reference|optional)/);if(a)return a[1]},mediaFeature:function(){var a,b,d=this.entities,f=[];o.save();do a=d.keyword()||d.variable(),a?f.push(a):o.$char("(")&&(b=this.property(),a=this.value(),o.$char(")")?b&&a?f.push(new e.Paren(new e.Rule(b,a,null,null,o.i,c,(!0)))):a?f.push(new e.Paren(a)):i("badly formed media feature definition"):i("Missing closing ')'","Parse"));while(a);if(o.forget(),f.length>0)return new e.Expression(f)},mediaFeatures:function(){var a,b=this.entities,c=[];do if(a=this.mediaFeature()){if(c.push(a),!o.$char(","))break}else if(a=b.variable(),a&&(c.push(a),!o.$char(",")))break;while(a);return c.length>0?c:null},media:function(){var b,d,f,g,h=o.i;return a.dumpLineNumbers&&(g=m(h)),o.save(),o.$str("@media")?(b=this.mediaFeatures(),d=this.block(),d||i("media definitions require block statements after any features"),o.forget(),f=new e.Media(d,b,h,c),a.dumpLineNumbers&&(f.debugInfo=g),f):void o.restore()},plugin:function(){var a,b=o.i,d=o.$re(/^@plugin?\s+/);if(d){var f={plugin:!0};if(a=this.entities.quoted()||this.entities.url())return o.$char(";")||(o.i=b,i("missing semi-colon on plugin")),new e.Import(a,null,f,b,c);o.i=b,i("malformed plugin statement")}},directive:function(){var b,d,f,g,h,j,k,l=o.i,n=!0,p=!0;if("@"===o.currentChar()){if(d=this["import"]()||this.plugin()||this.media())return d;if(o.save(),b=o.$re(/^@[a-z-]+/)){switch(g=b,"-"==b.charAt(1)&&b.indexOf("-",2)>0&&(g="@"+b.slice(b.indexOf("-",2)+1)),g){case"@charset":h=!0,n=!1;break;case"@namespace":j=!0,n=!1;break;case"@keyframes":case"@counter-style":h=!0;break;case"@document":case"@supports":k=!0,p=!1;break;default:k=!0}return o.commentStore.length=0,h?(d=this.entity(),d||i("expected "+b+" identifier")):j?(d=this.expression(),d||i("expected "+b+" expression")):k&&(d=(o.$re(/^[^{;]+/)||"").trim(),n="{"==o.currentChar(),d&&(d=new e.Anonymous(d))),n&&(f=this.blockRuleset()),f||!n&&d&&o.$char(";")?(o.forget(),new e.Directive(b,d,f,l,c,a.dumpLineNumbers?m(l):null,p)):void o.restore("directive options not recognised")}}},value:function(){var a,b=[];do if(a=this.expression(),a&&(b.push(a),!o.$char(",")))break;while(a);if(b.length>0)return new e.Value(b)},important:function(){if("!"===o.currentChar())return o.$re(/^! *important/)},sub:function(){var a,b;return o.save(),o.$char("(")?(a=this.addition(),a&&o.$char(")")?(o.forget(),b=new e.Expression([a]),b.parens=!0,b):void o.restore("Expected ')'")):void o.restore()},multiplication:function(){var a,b,c,d,f;if(a=this.operand()){for(f=o.isWhitespace(-1);;){if(o.peek(/^\/[*\/]/))break;if(o.save(),c=o.$char("/")||o.$char("*"),!c){o.forget();break}if(b=this.operand(),!b){o.restore();break}o.forget(),a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=o.isWhitespace(-1)}return d||a}},addition:function(){var a,b,c,d,f;if(a=this.multiplication()){for(f=o.isWhitespace(-1);;){if(c=o.$re(/^[-+]\s+/)||!f&&(o.$char("+")||o.$char("-")),!c)break;if(b=this.multiplication(),!b)break;a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=o.isWhitespace(-1)}return d||a}},conditions:function(){var a,b,c,d=o.i;if(a=this.condition()){for(;;){if(!o.peek(/^,\s*(not\s*)?\(/)||!o.$char(","))break;if(b=this.condition(),!b)break;c=new e.Condition("or",c||a,b,d)}return c||a}},condition:function(){function a(){return o.$str("or")}var b,c,d;if(b=this.conditionAnd(this)){if(c=a()){if(d=this.condition(),!d)return;b=new e.Condition(c,b,d)}return b}},conditionAnd:function(){function a(a){return a.negatedCondition()||a.parenthesisCondition()}function b(){return o.$str("and")}var c,d,f;if(c=a(this)){if(d=b()){if(f=this.conditionAnd(),!f)return;c=new e.Condition(d,c,f)}return c}},negatedCondition:function(){if(o.$str("not")){var a=this.parenthesisCondition();return a&&(a.negate=!a.negate),a}},parenthesisCondition:function(){function a(a){var b;return o.save(),(b=a.condition())&&o.$char(")")?(o.forget(),b):void o.restore()}var b;return o.save(),o.$str("(")?(b=a(this))?(o.forget(),b):(b=this.atomicCondition())?o.$char(")")?(o.forget(),b):void o.restore("expected ')' got '"+o.currentChar()+"'"):void o.restore():void o.restore()},atomicCondition:function(){var a,b,c,d,f=this.entities,g=o.i;if(a=this.addition()||f.keyword()||f.quoted())return o.$char(">")?d=o.$char("=")?">=":">":o.$char("<")?d=o.$char("=")?"<=":"<":o.$char("=")&&(d=o.$char(">")?"=>":o.$char("<")?"=<":"="),d?(b=this.addition()||f.keyword()||f.quoted(),b?c=new e.Condition(d,a,b,g,(!1)):i("expected expression")):c=new e.Condition("=",a,new e.Keyword("true"),g,(!1)),c},operand:function(){var a,b=this.entities;o.peek(/^-[@\(]/)&&(a=o.$char("-"));var c=this.sub()||b.dimension()||b.color()||b.variable()||b.call()||b.colorKeyword();return a&&(c.parensInOp=!0,c=new e.Negative(c)),c},expression:function(){var a,b,c=[];do a=this.comment(),a?c.push(a):(a=this.addition()||this.entity(),a&&(c.push(a),o.peek(/^\/[\/*]/)||(b=o.$char("/"),b&&c.push(new e.Anonymous(b)))));while(a);if(c.length>0)return new e.Expression(c)},property:function(){var a=o.$re(/^(\*?-?[_a-zA-Z0-9-]+)\s*:/);if(a)return a[1]},ruleProperty:function(){function a(a){var b=o.i,c=o.$re(a);if(c)return g.push(b),f.push(c[1])}var b,d,f=[],g=[];o.save();var h=o.$re(/^([_a-zA-Z0-9-]+)\s*:/);if(h)return f=[new e.Keyword(h[1])],o.forget(),f;for(a(/^(\*?)/);;)if(!a(/^((?:[\w-]+)|(?:@\{[\w-]+\}))/))break;if(f.length>1&&a(/^((?:\+_|\+)?)\s*:/)){for(o.forget(),""===f[0]&&(f.shift(),g.shift()),d=0;d<f.length;d++)b=f[d],f[d]="@"!==b.charAt(0)?new e.Keyword(b):new e.Variable("@"+b.slice(2,-1),g[d],c);return f}o.restore()}}}};i.serializeVars=function(a){var b="";for(var c in a)if(Object.hasOwnProperty.call(a,c)){var d=a[c];b+=("@"===c[0]?"":"@")+c+": "+d+(";"===String(d).slice(-1)?"":";")}return b},b.exports=i},{"../less-error":32,"../tree":62,"../utils":83,"../visitors":87,"./parser-input":37}],39:[function(a,b,c){var d=function(a){this.less=a,this.visitors=[],this.preProcessors=[],this.postProcessors=[],this.installedPlugins=[],this.fileManagers=[]};d.prototype.addPlugins=function(a){if(a)for(var b=0;b<a.length;b++)this.addPlugin(a[b])},d.prototype.addPlugin=function(a){this.installedPlugins.push(a),a.install(this.less,this)},d.prototype.addVisitor=function(a){this.visitors.push(a)},d.prototype.addPreProcessor=function(a,b){var c;for(c=0;c<this.preProcessors.length&&!(this.preProcessors[c].priority>=b);c++);this.preProcessors.splice(c,0,{preProcessor:a,priority:b})},d.prototype.addPostProcessor=function(a,b){var c;for(c=0;c<this.postProcessors.length&&!(this.postProcessors[c].priority>=b);c++);this.postProcessors.splice(c,0,{postProcessor:a,priority:b})},d.prototype.addFileManager=function(a){this.fileManagers.push(a)},d.prototype.getPreProcessors=function(){for(var a=[],b=0;b<this.preProcessors.length;b++)a.push(this.preProcessors[b].preProcessor);return a},d.prototype.getPostProcessors=function(){for(var a=[],b=0;b<this.postProcessors.length;b++)a.push(this.postProcessors[b].postProcessor);return a},d.prototype.getVisitors=function(){return this.visitors},d.prototype.getFileManagers=function(){return this.fileManagers},b.exports=d},{}],40:[function(a,b,c){var d=a("../less-error"),e=a("../tree"),f=b.exports=function(a,b){this.fileInfo=b};f.prototype.eval=function(a,b){var c,f,g={};f={add:function(a,b){g[a]=b},addMultiple:function(a){Object.keys(a).forEach(function(b){g[b]=a[b]})}};try{c=new Function("functions","tree","fileInfo",a),
-c(f,e,this.fileInfo)}catch(h){b(new d({message:"Plugin evaluation error: '"+h.name+": "+h.message.replace(/["]/g,"'")+"'",filename:this.fileInfo.filename}),null)}b(null,{functions:g})}},{"../less-error":32,"../tree":62}],41:[function(a,b,c){var d;b.exports=function(b,c,e){var f=function(b,e,g){if("function"==typeof e&&(g=e,e={}),!g){d||(d="undefined"==typeof Promise?a("promise"):Promise);var h=this;return new d(function(a,c){f.call(h,b,e,function(b,d){b?c(b):a(d)})})}this.parse(b,e,function(a,b,d,e){if(a)return g(a);var f;try{var h=new c(b,d);f=h.toCSS(e)}catch(a){return g(a)}g(null,f)})};return f}},{promise:void 0}],42:[function(a,b,c){b.exports=function(a,b){var c=function(a){this.options=a};return c.prototype.toCSS=function(b,c,d){var e=new a({contentsIgnoredCharsMap:d.contentsIgnoredChars,rootNode:b,contentsMap:d.contents,sourceMapFilename:this.options.sourceMapFilename,sourceMapURL:this.options.sourceMapURL,outputFilename:this.options.sourceMapOutputFilename,sourceMapBasepath:this.options.sourceMapBasepath,sourceMapRootpath:this.options.sourceMapRootpath,outputSourceFiles:this.options.outputSourceFiles,sourceMapGenerator:this.options.sourceMapGenerator,sourceMapFileInline:this.options.sourceMapFileInline}),f=e.toCSS(c);return this.sourceMap=e.sourceMap,this.sourceMapURL=e.sourceMapURL,this.options.sourceMapInputFilename&&(this.sourceMapInputFilename=e.normalizeFilename(this.options.sourceMapInputFilename)),f+this.getCSSAppendage()},c.prototype.getCSSAppendage=function(){var a=this.sourceMapURL;if(this.options.sourceMapFileInline){if(void 0===this.sourceMap)return"";a="data:application/json;base64,"+b.encodeBase64(this.sourceMap)}return a?"/*# sourceMappingURL="+a+" */":""},c.prototype.getExternalSourceMap=function(){return this.sourceMap},c.prototype.setExternalSourceMap=function(a){this.sourceMap=a},c.prototype.isInline=function(){return this.options.sourceMapFileInline},c.prototype.getSourceMapURL=function(){return this.sourceMapURL},c.prototype.getOutputFilename=function(){return this.options.sourceMapOutputFilename},c.prototype.getInputFilename=function(){return this.sourceMapInputFilename},c}},{}],43:[function(a,b,c){b.exports=function(a){var b=function(b){this._css=[],this._rootNode=b.rootNode,this._contentsMap=b.contentsMap,this._contentsIgnoredCharsMap=b.contentsIgnoredCharsMap,b.sourceMapFilename&&(this._sourceMapFilename=b.sourceMapFilename.replace(/\\/g,"/")),this._outputFilename=b.outputFilename,this.sourceMapURL=b.sourceMapURL,b.sourceMapBasepath&&(this._sourceMapBasepath=b.sourceMapBasepath.replace(/\\/g,"/")),b.sourceMapRootpath?(this._sourceMapRootpath=b.sourceMapRootpath.replace(/\\/g,"/"),"/"!==this._sourceMapRootpath.charAt(this._sourceMapRootpath.length-1)&&(this._sourceMapRootpath+="/")):this._sourceMapRootpath="",this._outputSourceFiles=b.outputSourceFiles,this._sourceMapGeneratorConstructor=a.getSourceMapGenerator(),this._lineNumber=0,this._column=0};return b.prototype.normalizeFilename=function(a){return a=a.replace(/\\/g,"/"),this._sourceMapBasepath&&0===a.indexOf(this._sourceMapBasepath)&&(a=a.substring(this._sourceMapBasepath.length),"\\"!==a.charAt(0)&&"/"!==a.charAt(0)||(a=a.substring(1))),(this._sourceMapRootpath||"")+a},b.prototype.add=function(a,b,c,d){if(a){var e,f,g,h,i;if(b){var j=this._contentsMap[b.filename];this._contentsIgnoredCharsMap[b.filename]&&(c-=this._contentsIgnoredCharsMap[b.filename],c<0&&(c=0),j=j.slice(this._contentsIgnoredCharsMap[b.filename])),j=j.substring(0,c),f=j.split("\n"),h=f[f.length-1]}if(e=a.split("\n"),g=e[e.length-1],b)if(d)for(i=0;i<e.length;i++)this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+i+1,column:0===i?this._column:0},original:{line:f.length+i,column:0===i?h.length:0},source:this.normalizeFilename(b.filename)});else this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+1,column:this._column},original:{line:f.length,column:h.length},source:this.normalizeFilename(b.filename)});1===e.length?this._column+=g.length:(this._lineNumber+=e.length-1,this._column=g.length),this._css.push(a)}},b.prototype.isEmpty=function(){return 0===this._css.length},b.prototype.toCSS=function(a){if(this._sourceMapGenerator=new this._sourceMapGeneratorConstructor({file:this._outputFilename,sourceRoot:null}),this._outputSourceFiles)for(var b in this._contentsMap)if(this._contentsMap.hasOwnProperty(b)){var c=this._contentsMap[b];this._contentsIgnoredCharsMap[b]&&(c=c.slice(this._contentsIgnoredCharsMap[b])),this._sourceMapGenerator.setSourceContent(this.normalizeFilename(b),c)}if(this._rootNode.genCSS(a,this),this._css.length>0){var d,e=JSON.stringify(this._sourceMapGenerator.toJSON());this.sourceMapURL?d=this.sourceMapURL:this._sourceMapFilename&&(d=this._sourceMapFilename),this.sourceMapURL=d,this.sourceMap=e}return this._css.join("")},b}},{}],44:[function(a,b,c){var d=a("./contexts"),e=a("./visitors"),f=a("./tree");b.exports=function(a,b){b=b||{};var c,g=b.variables,h=new d.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof f.Value||(b instanceof f.Expression||(b=new f.Expression([b])),b=new f.Value([b])),new f.Rule("@"+a,b,(!1),null,0)}),h.frames=[new f.Ruleset(null,g)]);var i,j=[],k=[new e.JoinSelectorVisitor,new e.MarkVisibleSelectorsVisitor((!0)),new e.ExtendVisitor,new e.ToCSSVisitor({compress:Boolean(b.compress)})];if(b.pluginManager){var l=b.pluginManager.getVisitors();for(i=0;i<l.length;i++){var m=l[i];m.isPreEvalVisitor?j.push(m):m.isPreVisitor?k.splice(0,0,m):k.push(m)}}for(i=0;i<j.length;i++)j[i].run(a);for(c=a.eval(h),i=0;i<k.length;i++)k[i].run(c);return c}},{"./contexts":11,"./tree":62,"./visitors":87}],45:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Alpha",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.eval=function(a){return this.value.eval?new e(this.value.eval(a)):this},e.prototype.genCSS=function(a,b){b.add("alpha(opacity="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value),b.add(")")},b.exports=e},{"./node":70}],46:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e,f){this.value=a,this.index=b,this.mapLines=d,this.currentFileInfo=c,this.rulesetLike="undefined"!=typeof e&&e,this.allowRoot=!0,this.copyVisibilityInfo(f)};e.prototype=new d,e.prototype.type="Anonymous",e.prototype.eval=function(){return new e(this.value,this.index,this.currentFileInfo,this.mapLines,this.rulesetLike,this.visibilityInfo())},e.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},e.prototype.isRulesetLike=function(){return this.rulesetLike},e.prototype.genCSS=function(a,b){b.add(this.value,this.currentFileInfo,this.index,this.mapLines)},b.exports=e},{"./node":70}],47:[function(a,b,c){var d=a("./node"),e=function(a,b){this.key=a,this.value=b};e.prototype=new d,e.prototype.type="Assignment",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.eval=function(a){return this.value.eval?new e(this.key,this.value.eval(a)):this},e.prototype.genCSS=function(a,b){b.add(this.key+"="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value)},b.exports=e},{"./node":70}],48:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.key=a,this.op=b,this.value=c};e.prototype=new d,e.prototype.type="Attribute",e.prototype.eval=function(a){return new e(this.key.eval?this.key.eval(a):this.key,this.op,this.value&&this.value.eval?this.value.eval(a):this.value)},e.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},e.prototype.toCSS=function(a){var b=this.key.toCSS?this.key.toCSS(a):this.key;return this.op&&(b+=this.op,b+=this.value.toCSS?this.value.toCSS(a):this.value),"["+b+"]"},b.exports=e},{"./node":70}],49:[function(a,b,c){var d=a("./node"),e=a("../functions/function-caller"),f=function(a,b,c,d){this.name=a,this.args=b,this.index=c,this.currentFileInfo=d};f.prototype=new d,f.prototype.type="Call",f.prototype.accept=function(a){this.args&&(this.args=a.visitArray(this.args))},f.prototype.eval=function(a){var b,c=this.args.map(function(b){return b.eval(a)}),d=new e(this.name,a,this.index,this.currentFileInfo);if(d.isValid()){try{b=d.call(c)}catch(g){throw{type:g.type||"Runtime",message:"error evaluating function `"+this.name+"`"+(g.message?": "+g.message:""),index:this.index,filename:this.currentFileInfo.filename}}if(null!=b)return b.index=this.index,b.currentFileInfo=this.currentFileInfo,b}return new f(this.name,c,this.index,this.currentFileInfo)},f.prototype.genCSS=function(a,b){b.add(this.name+"(",this.currentFileInfo,this.index);for(var c=0;c<this.args.length;c++)this.args[c].genCSS(a,b),c+1<this.args.length&&b.add(", ");b.add(")")},b.exports=f},{"../functions/function-caller":21,"./node":70}],50:[function(a,b,c){function d(a,b){return Math.min(Math.max(a,0),b)}function e(a){return"#"+a.map(function(a){return a=d(Math.round(a),255),(a<16?"0":"")+a.toString(16)}).join("")}var f=a("./node"),g=a("../data/colors"),h=function(a,b,c){this.rgb=Array.isArray(a)?a:6==a.length?a.match(/.{2}/g).map(function(a){return parseInt(a,16)}):a.split("").map(function(a){return parseInt(a+a,16)}),this.alpha="number"==typeof b?b:1,"undefined"!=typeof c&&(this.value=c)};h.prototype=new f,h.prototype.type="Color",h.prototype.luma=function(){var a=this.rgb[0]/255,b=this.rgb[1]/255,c=this.rgb[2]/255;return a=a<=.03928?a/12.92:Math.pow((a+.055)/1.055,2.4),b=b<=.03928?b/12.92:Math.pow((b+.055)/1.055,2.4),c=c<=.03928?c/12.92:Math.pow((c+.055)/1.055,2.4),.2126*a+.7152*b+.0722*c},h.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},h.prototype.toCSS=function(a,b){var c,e,f=a&&a.compress&&!b;if(this.value)return this.value;if(e=this.fround(a,this.alpha),e<1)return"rgba("+this.rgb.map(function(a){return d(Math.round(a),255)}).concat(d(e,1)).join(","+(f?"":" "))+")";if(c=this.toRGB(),f){var g=c.split("");g[1]===g[2]&&g[3]===g[4]&&g[5]===g[6]&&(c="#"+g[1]+g[3]+g[5])}return c},h.prototype.operate=function(a,b,c){for(var d=[],e=this.alpha*(1-c.alpha)+c.alpha,f=0;f<3;f++)d[f]=this._operate(a,b,this.rgb[f],c.rgb[f]);return new h(d,e)},h.prototype.toRGB=function(){return e(this.rgb)},h.prototype.toHSL=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=(g+h)/2,j=g-h;if(g===h)a=b=0;else{switch(b=i>.5?j/(2-g-h):j/(g+h),g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,l:i,a:f}},h.prototype.toHSV=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=g,j=g-h;if(b=0===g?0:j/g,g===h)a=0;else{switch(g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,v:i,a:f}},h.prototype.toARGB=function(){return e([255*this.alpha].concat(this.rgb))},h.prototype.compare=function(a){return a.rgb&&a.rgb[0]===this.rgb[0]&&a.rgb[1]===this.rgb[1]&&a.rgb[2]===this.rgb[2]&&a.alpha===this.alpha?0:void 0},h.fromKeyword=function(a){var b,c=a.toLowerCase();if(g.hasOwnProperty(c)?b=new h(g[c].slice(1)):"transparent"===c&&(b=new h([0,0,0],0)),b)return b.value=a,b},b.exports=h},{"../data/colors":12,"./node":70}],51:[function(a,b,c){var d=a("./node"),e=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};e.prototype=new d,e.prototype.type="Combinator";var f={"":!0," ":!0,"|":!0};e.prototype.genCSS=function(a,b){var c=a.compress||f[this.value]?"":" ";b.add(c+this.value+c)},b.exports=e},{"./node":70}],52:[function(a,b,c){var d=a("./node"),e=a("./debug-info"),f=function(a,b,c,d){this.value=a,this.isLineComment=b,this.index=c,this.currentFileInfo=d,this.allowRoot=!0};f.prototype=new d,f.prototype.type="Comment",f.prototype.genCSS=function(a,b){this.debugInfo&&b.add(e(a,this),this.currentFileInfo,this.index),b.add(this.value)},f.prototype.isSilent=function(a){var b=a.compress&&"!"!==this.value[2];return this.isLineComment||b},b.exports=f},{"./debug-info":54,"./node":70}],53:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e){this.op=a.trim(),this.lvalue=b,this.rvalue=c,this.index=d,this.negate=e};e.prototype=new d,e.prototype.type="Condition",e.prototype.accept=function(a){this.lvalue=a.visit(this.lvalue),this.rvalue=a.visit(this.rvalue)},e.prototype.eval=function(a){var b=function(a,b,c){switch(a){case"and":return b&&c;case"or":return b||c;default:switch(d.compare(b,c)){case-1:return"<"===a||"=<"===a||"<="===a;case 0:return"="===a||">="===a||"=<"===a||"<="===a;case 1:return">"===a||">="===a;default:return!1}}}(this.op,this.lvalue.eval(a),this.rvalue.eval(a));return this.negate?!b:b},b.exports=e},{"./node":70}],54:[function(a,b,c){var d=function(a,b,c){var e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=d.asComment(b);break;case"mediaquery":e=d.asMediaQuery(b);break;case"all":e=d.asComment(b)+(c||"")+d.asMediaQuery(b)}return e};d.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},d.asMediaQuery=function(a){var b=a.debugInfo.fileName;return/^[a-z]+:\/\//i.test(b)||(b="file://"+b),"@media -sass-debug-info{filename{font-family:"+b.replace(/([.:\/\\])/g,function(a){return"\\"==a&&(a="/"),"\\"+a})+"}line{font-family:\\00003"+a.debugInfo.lineNumber+"}}\n"},b.exports=d},{}],55:[function(a,b,c){var d=a("./node"),e=a("../contexts"),f=function(a,b){this.ruleset=a,this.frames=b};f.prototype=new d,f.prototype.type="DetachedRuleset",f.prototype.evalFirst=!0,f.prototype.accept=function(a){this.ruleset=a.visit(this.ruleset)},f.prototype.eval=function(a){var b=this.frames||a.frames.slice(0);return new f(this.ruleset,b)},f.prototype.callEval=function(a){return this.ruleset.eval(this.frames?new e.Eval(a,this.frames.concat(a.frames)):a)},b.exports=f},{"../contexts":11,"./node":70}],56:[function(a,b,c){var d=a("./node"),e=a("../data/unit-conversions"),f=a("./unit"),g=a("./color"),h=function(a,b){this.value=parseFloat(a),this.unit=b&&b instanceof f?b:new f(b?[b]:void 0)};h.prototype=new d,h.prototype.type="Dimension",h.prototype.accept=function(a){this.unit=a.visit(this.unit)},h.prototype.eval=function(a){return this},h.prototype.toColor=function(){return new g([this.value,this.value,this.value])},h.prototype.genCSS=function(a,b){if(a&&a.strictUnits&&!this.unit.isSingular())throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: "+this.unit.toString());var c=this.fround(a,this.value),d=String(c);if(0!==c&&c<1e-6&&c>-1e-6&&(d=c.toFixed(20).replace(/0+$/,"")),a&&a.compress){if(0===c&&this.unit.isLength())return void b.add(d);c>0&&c<1&&(d=d.substr(1))}b.add(d),this.unit.genCSS(a,b)},h.prototype.operate=function(a,b,c){var d=this._operate(a,b,this.value,c.value),e=this.unit.clone();if("+"===b||"-"===b)if(0===e.numerator.length&&0===e.denominator.length)e=c.unit.clone(),this.unit.backupUnit&&(e.backupUnit=this.unit.backupUnit);else if(0===c.unit.numerator.length&&0===e.denominator.length);else{if(c=c.convertTo(this.unit.usedUnits()),a.strictUnits&&c.unit.toString()!==e.toString())throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '"+e.toString()+"' and '"+c.unit.toString()+"'.");d=this._operate(a,b,this.value,c.value)}else"*"===b?(e.numerator=e.numerator.concat(c.unit.numerator).sort(),e.denominator=e.denominator.concat(c.unit.denominator).sort(),e.cancel()):"/"===b&&(e.numerator=e.numerator.concat(c.unit.denominator).sort(),e.denominator=e.denominator.concat(c.unit.numerator).sort(),e.cancel());return new h(d,e)},h.prototype.compare=function(a){var b,c;if(a instanceof h){if(this.unit.isEmpty()||a.unit.isEmpty())b=this,c=a;else if(b=this.unify(),c=a.unify(),0!==b.unit.compare(c.unit))return;return d.numericCompare(b.value,c.value)}},h.prototype.unify=function(){return this.convertTo({length:"px",duration:"s",angle:"rad"})},h.prototype.convertTo=function(a){var b,c,d,f,g,i=this.value,j=this.unit.clone(),k={};if("string"==typeof a){for(b in e)e[b].hasOwnProperty(a)&&(k={},k[b]=a);a=k}g=function(a,b){return d.hasOwnProperty(a)?(b?i/=d[a]/d[f]:i*=d[a]/d[f],f):a};for(c in a)a.hasOwnProperty(c)&&(f=a[c],d=e[c],j.map(g));return j.cancel(),new h(i,j)},b.exports=h},{"../data/unit-conversions":14,"./color":50,"./node":70,"./unit":79}],57:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./ruleset"),g=function(a,b,c,d,f,g,h,i){var j;if(this.name=a,this.value=b,c)for(Array.isArray(c)?this.rules=c:(this.rules=[c],this.rules[0].selectors=new e([],null,null,this.index,f).createEmptySelectors()),j=0;j<this.rules.length;j++)this.rules[j].allowImports=!0;this.index=d,this.currentFileInfo=f,this.debugInfo=g,this.isRooted=h||!1,this.copyVisibilityInfo(i),this.allowRoot=!0};g.prototype=new d,g.prototype.type="Directive",g.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visitArray(c)),b&&(this.value=a.visit(b))},g.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},g.prototype.isCharset=function(){return"@charset"===this.name},g.prototype.genCSS=function(a,b){var c=this.value,d=this.rules;b.add(this.name,this.currentFileInfo,this.index),c&&(b.add(" "),c.genCSS(a,b)),d?this.outputRuleset(a,b,d):b.add(";")},g.prototype.eval=function(a){var b,c,d=this.value,e=this.rules;return b=a.mediaPath,c=a.mediaBlocks,a.mediaPath=[],a.mediaBlocks=[],d&&(d=d.eval(a)),e&&(e=[e[0].eval(a)],e[0].root=!0),a.mediaPath=b,a.mediaBlocks=c,new g(this.name,d,e,this.index,this.currentFileInfo,this.debugInfo,this.isRooted,this.visibilityInfo())},g.prototype.variable=function(a){if(this.rules)return f.prototype.variable.call(this.rules[0],a)},g.prototype.find=function(){if(this.rules)return f.prototype.find.apply(this.rules[0],arguments)},g.prototype.rulesets=function(){if(this.rules)return f.prototype.rulesets.apply(this.rules[0])},g.prototype.outputRuleset=function(a,b,c){var d,e=c.length;if(a.tabLevel=(0|a.tabLevel)+1,a.compress){for(b.add("{"),d=0;d<e;d++)c[d].genCSS(a,b);return b.add("}"),void a.tabLevel--}var f="\n"+Array(a.tabLevel).join("  "),g=f+"  ";if(e){for(b.add(" {"+g),c[0].genCSS(a,b),d=1;d<e;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=g},{"./node":70,"./ruleset":76,"./selector":77}],58:[function(a,b,c){var d=a("./node"),e=a("./paren"),f=a("./combinator"),g=function(a,b,c,d,e){this.combinator=a instanceof f?a:new f(a),this.value="string"==typeof b?b.trim():b?b:"",this.index=c,this.currentFileInfo=d,this.copyVisibilityInfo(e)};g.prototype=new d,g.prototype.type="Element",g.prototype.accept=function(a){var b=this.value;this.combinator=a.visit(this.combinator),"object"==typeof b&&(this.value=a.visit(b))},g.prototype.eval=function(a){return new g(this.combinator,this.value.eval?this.value.eval(a):this.value,this.index,this.currentFileInfo,this.visibilityInfo())},g.prototype.clone=function(){return new g(this.combinator,this.value,this.index,this.currentFileInfo,this.visibilityInfo())},g.prototype.genCSS=function(a,b){b.add(this.toCSS(a),this.currentFileInfo,this.index)},g.prototype.toCSS=function(a){a=a||{};var b=this.value,c=a.firstSelector;return b instanceof e&&(a.firstSelector=!0),b=b.toCSS?b.toCSS(a):b,a.firstSelector=c,""===b&&"&"===this.combinator.value.charAt(0)?"":this.combinator.toCSS(a)+b},b.exports=g},{"./combinator":51,"./node":70,"./paren":72}],59:[function(a,b,c){var d=a("./node"),e=a("./paren"),f=a("./comment"),g=function(a){if(this.value=a,!a)throw new Error("Expression requires an array parameter")};g.prototype=new d,g.prototype.type="Expression",g.prototype.accept=function(a){this.value=a.visitArray(this.value)},g.prototype.eval=function(a){var b,c=this.parens&&!this.parensInOp,d=!1;return c&&a.inParenthesis(),this.value.length>1?b=new g(this.value.map(function(b){return b.eval(a)})):1===this.value.length?(this.value[0].parens&&!this.value[0].parensInOp&&(d=!0),b=this.value[0].eval(a)):b=this,c&&a.outOfParenthesis(),this.parens&&this.parensInOp&&!a.isMathOn()&&!d&&(b=new e(b)),b},g.prototype.genCSS=function(a,b){for(var c=0;c<this.value.length;c++)this.value[c].genCSS(a,b),c+1<this.value.length&&b.add(" ")},g.prototype.throwAwayComments=function(){this.value=this.value.filter(function(a){return!(a instanceof f)})},b.exports=g},{"./comment":52,"./node":70,"./paren":72}],60:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=function g(a,b,c,d,e){switch(this.selector=a,this.option=b,this.index=c,this.object_id=g.next_id++,this.parent_ids=[this.object_id],this.currentFileInfo=d||{},this.copyVisibilityInfo(e),this.allowRoot=!0,b){case"all":this.allowBefore=!0,this.allowAfter=!0;break;default:this.allowBefore=!1,this.allowAfter=!1}};f.next_id=0,f.prototype=new d,f.prototype.type="Extend",f.prototype.accept=function(a){this.selector=a.visit(this.selector)},f.prototype.eval=function(a){return new f(this.selector.eval(a),this.option,this.index,this.currentFileInfo,this.visibilityInfo())},f.prototype.clone=function(a){return new f(this.selector,this.option,this.index,this.currentFileInfo,this.visibilityInfo())},f.prototype.findSelfSelectors=function(a){var b,c,d=[];for(b=0;b<a.length;b++)c=a[b].elements,b>0&&c.length&&""===c[0].combinator.value&&(c[0].combinator.value=" "),d=d.concat(a[b].elements);this.selfSelectors=[new e(d)],this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo())},b.exports=f},{"./node":70,"./selector":77}],61:[function(a,b,c){var d=a("./node"),e=a("./media"),f=a("./url"),g=a("./quoted"),h=a("./ruleset"),i=a("./anonymous"),j=function(a,b,c,d,e,f){if(this.options=c,this.index=d,this.path=a,this.features=b,this.currentFileInfo=e,this.allowRoot=!0,void 0!==this.options.less||this.options.inline)this.css=!this.options.less||this.options.inline;else{var g=this.getPath();g&&/[#\.\&\?\/]css([\?;].*)?$/.test(g)&&(this.css=!0)}this.copyVisibilityInfo(f)};j.prototype=new d,j.prototype.type="Import",j.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.path=a.visit(this.path),this.options.plugin||this.options.inline||!this.root||(this.root=a.visit(this.root))},j.prototype.genCSS=function(a,b){this.css&&void 0===this.path.currentFileInfo.reference&&(b.add("@import ",this.currentFileInfo,this.index),this.path.genCSS(a,b),this.features&&(b.add(" "),this.features.genCSS(a,b)),b.add(";"))},j.prototype.getPath=function(){return this.path instanceof f?this.path.value.value:this.path.value},j.prototype.isVariableImport=function(){var a=this.path;return a instanceof f&&(a=a.value),!(a instanceof g)||a.containsVariables()},j.prototype.evalForImport=function(a){var b=this.path;return b instanceof f&&(b=b.value),new j(b.eval(a),this.features,this.options,this.index,this.currentFileInfo,this.visibilityInfo())},j.prototype.evalPath=function(a){var b=this.path.eval(a),c=this.currentFileInfo&&this.currentFileInfo.rootpath;if(!(b instanceof f)){if(c){var d=b.value;d&&a.isPathRelative(d)&&(b.value=c+d)}b.value=a.normalizePath(b.value)}return b},j.prototype.eval=function(a){var b=this.doEval(a);return(this.options.reference||this.blocksVisibility())&&(b.length||0===b.length?b.forEach(function(a){a.addVisibilityBlock()}):b.addVisibilityBlock()),b},j.prototype.doEval=function(a){var b,c,d=this.features&&this.features.eval(a);if(this.options.plugin)return c=a.frames[0]&&a.frames[0].functionRegistry,c&&this.root&&this.root.functions&&c.addMultiple(this.root.functions),[];if(this.skip&&("function"==typeof this.skip&&(this.skip=this.skip()),this.skip))return[];if(this.options.inline){var f=new i(this.root,0,{filename:this.importedFilename,reference:this.path.currentFileInfo&&this.path.currentFileInfo.reference},(!0),(!0));return this.features?new e([f],this.features.value):[f]}if(this.css){var g=new j(this.evalPath(a),d,this.options,this.index);if(!g.css&&this.error)throw this.error;return g}return b=new h(null,this.root.rules.slice(0)),b.evalImports(a),this.features?new e(b.rules,this.features.value):b.rules},b.exports=j},{"./anonymous":46,"./media":66,"./node":70,"./quoted":73,"./ruleset":76,"./url":80}],62:[function(a,b,c){var d={};d.Node=a("./node"),d.Alpha=a("./alpha"),d.Color=a("./color"),d.Directive=a("./directive"),d.DetachedRuleset=a("./detached-ruleset"),d.Operation=a("./operation"),d.Dimension=a("./dimension"),d.Unit=a("./unit"),d.Keyword=a("./keyword"),d.Variable=a("./variable"),d.Ruleset=a("./ruleset"),d.Element=a("./element"),d.Attribute=a("./attribute"),d.Combinator=a("./combinator"),d.Selector=a("./selector"),d.Quoted=a("./quoted"),d.Expression=a("./expression"),d.Rule=a("./rule"),d.Call=a("./call"),d.URL=a("./url"),d.Import=a("./import"),d.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},d.Comment=a("./comment"),d.Anonymous=a("./anonymous"),d.Value=a("./value"),d.JavaScript=a("./javascript"),d.Assignment=a("./assignment"),d.Condition=a("./condition"),d.Paren=a("./paren"),d.Media=a("./media"),d.UnicodeDescriptor=a("./unicode-descriptor"),d.Negative=a("./negative"),d.Extend=a("./extend"),d.RulesetCall=a("./ruleset-call"),b.exports=d},{"./alpha":45,"./anonymous":46,"./assignment":47,"./attribute":48,"./call":49,"./color":50,"./combinator":51,"./comment":52,"./condition":53,"./detached-ruleset":55,"./dimension":56,"./directive":57,"./element":58,"./expression":59,"./extend":60,"./import":61,"./javascript":63,"./keyword":65,"./media":66,"./mixin-call":67,"./mixin-definition":68,"./negative":69,"./node":70,"./operation":71,"./paren":72,"./quoted":73,"./rule":74,"./ruleset":76,"./ruleset-call":75,"./selector":77,"./unicode-descriptor":78,"./unit":79,"./url":80,"./value":81,"./variable":82}],63:[function(a,b,c){var d=a("./js-eval-node"),e=a("./dimension"),f=a("./quoted"),g=a("./anonymous"),h=function(a,b,c,d){this.escaped=b,this.expression=a,this.index=c,this.currentFileInfo=d};h.prototype=new d,h.prototype.type="JavaScript",h.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a);return"number"==typeof b?new e(b):"string"==typeof b?new f('"'+b+'"',b,this.escaped,this.index):new g(Array.isArray(b)?b.join(", "):b)},b.exports=h},{"./anonymous":46,"./dimension":56,"./js-eval-node":64,"./quoted":73}],64:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(){};f.prototype=new d,f.prototype.evaluateJavaScript=function(a,b){var c,d=this,f={};if(void 0!==b.javascriptEnabled&&!b.javascriptEnabled)throw{message:"You are using JavaScript, which has been disabled.",filename:this.currentFileInfo.filename,index:this.index};a=a.replace(/@\{([\w-]+)\}/g,function(a,c){return d.jsify(new e("@"+c,d.index,d.currentFileInfo).eval(b))});try{a=new Function("return ("+a+")")}catch(g){throw{message:"JavaScript evaluation error: "+g.message+" from `"+a+"`",filename:this.currentFileInfo.filename,index:this.index}}var h=b.frames[0].variables();for(var i in h)h.hasOwnProperty(i)&&(f[i.slice(1)]={value:h[i].value,toJS:function(){return this.value.eval(b).toCSS()}});try{c=a.call(f)}catch(g){throw{message:"JavaScript evaluation error: '"+g.name+": "+g.message.replace(/["]/g,"'")+"'",filename:this.currentFileInfo.filename,index:this.index}}return c},f.prototype.jsify=function(a){return Array.isArray(a.value)&&a.value.length>1?"["+a.value.map(function(a){return a.toCSS()}).join(", ")+"]":a.toCSS()},b.exports=f},{"./node":70,"./variable":82}],65:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Keyword",e.prototype.genCSS=function(a,b){if("%"===this.value)throw{type:"Syntax",message:"Invalid % without number"};b.add(this.value)},e.True=new e("true"),e.False=new e("false"),b.exports=e},{"./node":70}],66:[function(a,b,c){var d=a("./ruleset"),e=a("./value"),f=a("./selector"),g=a("./anonymous"),h=a("./expression"),i=a("./directive"),j=function(a,b,c,g,h){this.index=c,this.currentFileInfo=g;var i=new f([],null,null,this.index,this.currentFileInfo).createEmptySelectors();this.features=new e(b),this.rules=[new d(i,a)],this.rules[0].allowImports=!0,this.copyVisibilityInfo(h),this.allowRoot=!0};j.prototype=new i,j.prototype.type="Media",j.prototype.isRulesetLike=!0,j.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.rules&&(this.rules=a.visitArray(this.rules))},j.prototype.genCSS=function(a,b){b.add("@media ",this.currentFileInfo,this.index),this.features.genCSS(a,b),this.outputRuleset(a,b,this.rules)},j.prototype.eval=function(a){a.mediaBlocks||(a.mediaBlocks=[],a.mediaPath=[]);var b=new j(null,[],this.index,this.currentFileInfo,this.visibilityInfo());this.debugInfo&&(this.rules[0].debugInfo=this.debugInfo,b.debugInfo=this.debugInfo);var c=!1;a.strictMath||(c=!0,a.strictMath=!0);try{b.features=this.features.eval(a)}finally{c&&(a.strictMath=!1)}return a.mediaPath.push(b),a.mediaBlocks.push(b),this.rules[0].functionRegistry=a.frames[0].functionRegistry.inherit(),a.frames.unshift(this.rules[0]),b.rules=[this.rules[0].eval(a)],a.frames.shift(),a.mediaPath.pop(),0===a.mediaPath.length?b.evalTop(a):b.evalNested(a)},j.prototype.evalTop=function(a){var b=this;if(a.mediaBlocks.length>1){var c=new f([],null,null,this.index,this.currentFileInfo).createEmptySelectors();b=new d(c,a.mediaBlocks),b.multiMedia=!0,b.copyVisibilityInfo(this.visibilityInfo())}return delete a.mediaBlocks,delete a.mediaPath,b},j.prototype.evalNested=function(a){var b,c,f=a.mediaPath.concat([this]);for(b=0;b<f.length;b++)c=f[b].features instanceof e?f[b].features.value:f[b].features,f[b]=Array.isArray(c)?c:[c];return this.features=new e(this.permute(f).map(function(a){for(a=a.map(function(a){return a.toCSS?a:new g(a)}),b=a.length-1;b>0;b--)a.splice(b,0,new g("and"));return new h(a)})),new d([],[])},j.prototype.permute=function(a){if(0===a.length)return[];if(1===a.length)return a[0];for(var b=[],c=this.permute(a.slice(1)),d=0;d<c.length;d++)for(var e=0;e<a[0].length;e++)b.push([a[0][e]].concat(c[d]));return b},j.prototype.bubbleSelectors=function(a){a&&(this.rules=[new d(a.slice(0),[this.rules[0]])])},b.exports=j},{"./anonymous":46,"./directive":57,"./expression":59,"./ruleset":76,"./selector":77,"./value":81}],67:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./mixin-definition"),g=a("../functions/default"),h=function(a,b,c,d,f){this.selector=new e(a),this.arguments=b||[],this.index=c,this.currentFileInfo=d,this.important=f,this.allowRoot=!0};h.prototype=new d,h.prototype.type="MixinCall",h.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments.length&&(this.arguments=a.visitArray(this.arguments))},h.prototype.eval=function(a){function b(b,c){var d,e,f;for(d=0;d<2;d++){for(x[d]=!0,g.value(d),e=0;e<c.length&&x[d];e++)f=c[e],f.matchCondition&&(x[d]=x[d]&&f.matchCondition(null,a));b.matchCondition&&(x[d]=x[d]&&b.matchCondition(t,a))}return x[0]||x[1]?x[0]!=x[1]?x[1]?A:B:z:y}var c,d,e,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=[],v=!1,w=[],x=[],y=-1,z=0,A=1,B=2;for(j=0;j<this.arguments.length;j++)if(h=this.arguments[j],i=h.value.eval(a),h.expand&&Array.isArray(i.value))for(i=i.value,k=0;k<i.length;k++)t.push({value:i[k]});else t.push({name:h.name,value:i});for(s=function(b){return b.matchArgs(null,a)},j=0;j<a.frames.length;j++)if((c=a.frames[j].find(this.selector,null,s)).length>0){for(n=!0,k=0;k<c.length;k++){for(d=c[k].rule,e=c[k].path,m=!1,l=0;l<a.frames.length;l++)if(!(d instanceof f)&&d===(a.frames[l].originalRuleset||a.frames[l])){m=!0;break}m||d.matchArgs(t,a)&&(o={mixin:d,group:b(d,e)},o.group!==y&&w.push(o),v=!0)}for(g.reset(),q=[0,0,0],k=0;k<w.length;k++)q[w[k].group]++;if(q[z]>0)p=B;else if(p=A,q[A]+q[B]>1)throw{type:"Runtime",message:"Ambiguous use of `default()` found when matching for `"+this.format(t)+"`",index:this.index,filename:this.currentFileInfo.filename};for(k=0;k<w.length;k++)if(o=w[k].group,o===z||o===p)try{d=w[k].mixin,d instanceof f||(r=d.originalRuleset||d,d=new f("",[],d.rules,null,(!1),null,r.visibilityInfo()),d.originalRuleset=r);var C=d.evalCall(a,t,this.important).rules;this._setVisibilityToReplacement(C),Array.prototype.push.apply(u,C)}catch(D){throw{message:D.message,index:this.index,filename:this.currentFileInfo.filename,
-stack:D.stack}}if(v)return u}throw n?{type:"Runtime",message:"No matching definition was found for `"+this.format(t)+"`",index:this.index,filename:this.currentFileInfo.filename}:{type:"Name",message:this.selector.toCSS().trim()+" is undefined",index:this.index,filename:this.currentFileInfo.filename}},h.prototype._setVisibilityToReplacement=function(a){var b,c;if(this.blocksVisibility())for(b=0;b<a.length;b++)c=a[b],c.addVisibilityBlock()},h.prototype.format=function(a){return this.selector.toCSS().trim()+"("+(a?a.map(function(a){var b="";return a.name&&(b+=a.name+":"),b+=a.value.toCSS?a.value.toCSS():"???"}).join(", "):"")+")"},b.exports=h},{"../functions/default":20,"./mixin-definition":68,"./node":70,"./selector":77}],68:[function(a,b,c){var d=a("./selector"),e=a("./element"),f=a("./ruleset"),g=a("./rule"),h=a("./expression"),i=a("../contexts"),j=function(a,b,c,f,g,h,i){this.name=a,this.selectors=[new d([new e(null,a,this.index,this.currentFileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=c,this._lookups={};var j=[];this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:(j.push(b.name),a)},0),this.optionalParameters=j,this.frames=h,this.copyVisibilityInfo(i),this.allowRoot=!0};j.prototype=new f,j.prototype.type="MixinDefinition",j.prototype.evalFirst=!0,j.prototype.accept=function(a){this.params&&this.params.length&&(this.params=a.visitArray(this.params)),this.rules=a.visitArray(this.rules),this.condition&&(this.condition=a.visit(this.condition))},j.prototype.evalParams=function(a,b,c,d){var e,j,k,l,m,n,o,p,q=new f(null,null),r=this.params.slice(0),s=0;if(b.frames&&b.frames[0]&&b.frames[0].functionRegistry&&(q.functionRegistry=b.frames[0].functionRegistry.inherit()),b=new i.Eval(b,[q].concat(b.frames)),c)for(c=c.slice(0),s=c.length,k=0;k<s;k++)if(j=c[k],n=j&&j.name){for(o=!1,l=0;l<r.length;l++)if(!d[l]&&n===r[l].name){d[l]=j.value.eval(a),q.prependRule(new g(n,j.value.eval(a))),o=!0;break}if(o){c.splice(k,1),k--;continue}throw{type:"Runtime",message:"Named argument for "+this.name+" "+c[k].name+" not found"}}for(p=0,k=0;k<r.length;k++)if(!d[k]){if(j=c&&c[p],n=r[k].name)if(r[k].variadic){for(e=[],l=p;l<s;l++)e.push(c[l].value.eval(a));q.prependRule(new g(n,new h(e).eval(a)))}else{if(m=j&&j.value)m=m.eval(a);else{if(!r[k].value)throw{type:"Runtime",message:"wrong number of arguments for "+this.name+" ("+s+" for "+this.arity+")"};m=r[k].value.eval(b),q.resetCache()}q.prependRule(new g(n,m)),d[k]=m}if(r[k].variadic&&c)for(l=p;l<s;l++)d[l]=c[l].value.eval(a);p++}return q},j.prototype.makeImportant=function(){var a=this.rules?this.rules.map(function(a){return a.makeImportant?a.makeImportant(!0):a}):this.rules,b=new j(this.name,this.params,a,this.condition,this.variadic,this.frames);return b},j.prototype.eval=function(a){return new j(this.name,this.params,this.rules,this.condition,this.variadic,this.frames||a.frames.slice(0))},j.prototype.evalCall=function(a,b,c){var d,e,j=[],k=this.frames?this.frames.concat(a.frames):a.frames,l=this.evalParams(a,new i.Eval(a,k),b,j);return l.prependRule(new g("@arguments",new h(j).eval(a))),d=this.rules.slice(0),e=new f(null,d),e.originalRuleset=this,e=e.eval(new i.Eval(a,[this,l].concat(k))),c&&(e=e.makeImportant()),e},j.prototype.matchCondition=function(a,b){return!(this.condition&&!this.condition.eval(new i.Eval(b,[this.evalParams(b,new i.Eval(b,this.frames?this.frames.concat(b.frames):b.frames),a,[])].concat(this.frames||[]).concat(b.frames))))},j.prototype.matchArgs=function(a,b){var c,d=a&&a.length||0,e=this.optionalParameters,f=a?a.reduce(function(a,b){return e.indexOf(b.name)<0?a+1:a},0):0;if(this.variadic){if(f<this.required-1)return!1}else{if(f<this.required)return!1;if(d>this.params.length)return!1}c=Math.min(f,this.arity);for(var g=0;g<c;g++)if(!this.params[g].name&&!this.params[g].variadic&&a[g].value.eval(b).toCSS()!=this.params[g].value.eval(b).toCSS())return!1;return!0},b.exports=j},{"../contexts":11,"./element":58,"./expression":59,"./rule":74,"./ruleset":76,"./selector":77}],69:[function(a,b,c){var d=a("./node"),e=a("./operation"),f=a("./dimension"),g=function(a){this.value=a};g.prototype=new d,g.prototype.type="Negative",g.prototype.genCSS=function(a,b){b.add("-"),this.value.genCSS(a,b)},g.prototype.eval=function(a){return a.isMathOn()?new e("*",[new f((-1)),this.value]).eval(a):new g(this.value.eval(a))},b.exports=g},{"./dimension":56,"./node":70,"./operation":71}],70:[function(a,b,c){var d=function(){};d.prototype.toCSS=function(a){var b=[];return this.genCSS(a,{add:function(a,c,d){b.push(a)},isEmpty:function(){return 0===b.length}}),b.join("")},d.prototype.genCSS=function(a,b){b.add(this.value)},d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.eval=function(){return this},d.prototype._operate=function(a,b,c,d){switch(b){case"+":return c+d;case"-":return c-d;case"*":return c*d;case"/":return c/d}},d.prototype.fround=function(a,b){var c=a&&a.numPrecision;return null==c?b:Number((b+2e-16).toFixed(c))},d.compare=function(a,b){if(a.compare&&"Quoted"!==b.type&&"Anonymous"!==b.type)return a.compare(b);if(b.compare)return-b.compare(a);if(a.type===b.type){if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length===b.length){for(var c=0;c<a.length;c++)if(0!==d.compare(a[c],b[c]))return;return 0}}},d.numericCompare=function(a,b){return a<b?-1:a===b?0:a>b?1:void 0},d.prototype.blocksVisibility=function(){return null==this.visibilityBlocks&&(this.visibilityBlocks=0),0!==this.visibilityBlocks},d.prototype.addVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks+1},d.prototype.removeVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks-1},d.prototype.ensureVisibility=function(){this.nodeVisible=!0},d.prototype.ensureInvisibility=function(){this.nodeVisible=!1},d.prototype.isVisible=function(){return this.nodeVisible},d.prototype.visibilityInfo=function(){return{visibilityBlocks:this.visibilityBlocks,nodeVisible:this.nodeVisible}},d.prototype.copyVisibilityInfo=function(a){a&&(this.visibilityBlocks=a.visibilityBlocks,this.nodeVisible=a.nodeVisible)},b.exports=d},{}],71:[function(a,b,c){var d=a("./node"),e=a("./color"),f=a("./dimension"),g=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};g.prototype=new d,g.prototype.type="Operation",g.prototype.accept=function(a){this.operands=a.visit(this.operands)},g.prototype.eval=function(a){var b=this.operands[0].eval(a),c=this.operands[1].eval(a);if(a.isMathOn()){if(b instanceof f&&c instanceof e&&(b=b.toColor()),c instanceof f&&b instanceof e&&(c=c.toColor()),!b.operate)throw{type:"Operation",message:"Operation on an invalid type"};return b.operate(a,this.op,c)}return new g(this.op,[b,c],this.isSpaced)},g.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" "),this.operands[1].genCSS(a,b)},b.exports=g},{"./color":50,"./dimension":56,"./node":70}],72:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Paren",e.prototype.genCSS=function(a,b){b.add("("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){return new e(this.value.eval(a))},b.exports=e},{"./node":70}],73:[function(a,b,c){var d=a("./node"),e=a("./js-eval-node"),f=a("./variable"),g=function(a,b,c,d,e){this.escaped=null==c||c,this.value=b||"",this.quote=a.charAt(0),this.index=d,this.currentFileInfo=e};g.prototype=new e,g.prototype.type="Quoted",g.prototype.genCSS=function(a,b){this.escaped||b.add(this.quote,this.currentFileInfo,this.index),b.add(this.value),this.escaped||b.add(this.quote)},g.prototype.containsVariables=function(){return this.value.match(/(`([^`]+)`)|@\{([\w-]+)\}/)},g.prototype.eval=function(a){function b(a,b,c){var d=a;do a=d,d=a.replace(b,c);while(a!==d);return d}var c=this,d=this.value,e=function(b,d){return String(c.evaluateJavaScript(d,a))},h=function(b,d){var e=new f("@"+d,c.index,c.currentFileInfo).eval(a,!0);return e instanceof g?e.value:e.toCSS()};return d=b(d,/`([^`]+)`/g,e),d=b(d,/@\{([\w-]+)\}/g,h),new g(this.quote+d+this.quote,d,this.escaped,this.index,this.currentFileInfo)},g.prototype.compare=function(a){return"Quoted"!==a.type||this.escaped||a.escaped?a.toCSS&&this.toCSS()===a.toCSS()?0:void 0:d.numericCompare(this.value,a.value)},b.exports=g},{"./js-eval-node":64,"./node":70,"./variable":82}],74:[function(a,b,c){function d(a,b){var c,d="",e=b.length,f={add:function(a){d+=a}};for(c=0;c<e;c++)b[c].eval(a).genCSS(a,f);return d}var e=a("./node"),f=a("./value"),g=a("./keyword"),h=function(a,b,c,d,g,h,i,j){this.name=a,this.value=b instanceof e?b:new f([b]),this.important=c?" "+c.trim():"",this.merge=d,this.index=g,this.currentFileInfo=h,this.inline=i||!1,this.variable=void 0!==j?j:a.charAt&&"@"===a.charAt(0),this.allowRoot=!0};h.prototype=new e,h.prototype.type="Rule",h.prototype.genCSS=function(a,b){b.add(this.name+(a.compress?":":": "),this.currentFileInfo,this.index);try{this.value.genCSS(a,b)}catch(c){throw c.index=this.index,c.filename=this.currentFileInfo.filename,c}b.add(this.important+(this.inline||a.lastRule&&a.compress?"":";"),this.currentFileInfo,this.index)},h.prototype.eval=function(a){var b,c=!1,e=this.name,f=this.variable;"string"!=typeof e&&(e=1===e.length&&e[0]instanceof g?e[0].value:d(a,e),f=!1),"font"!==e||a.strictMath||(c=!0,a.strictMath=!0);try{if(a.importantScope.push({}),b=this.value.eval(a),!this.variable&&"DetachedRuleset"===b.type)throw{message:"Rulesets cannot be evaluated on a property.",index:this.index,filename:this.currentFileInfo.filename};var i=this.important,j=a.importantScope.pop();return!i&&j.important&&(i=j.important),new h(e,b,i,this.merge,this.index,this.currentFileInfo,this.inline,f)}catch(k){throw"number"!=typeof k.index&&(k.index=this.index,k.filename=this.currentFileInfo.filename),k}finally{c&&(a.strictMath=!1)}},h.prototype.makeImportant=function(){return new h(this.name,this.value,"!important",this.merge,this.index,this.currentFileInfo,this.inline)},b.exports=h},{"./keyword":65,"./node":70,"./value":81}],75:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(a){this.variable=a,this.allowRoot=!0};f.prototype=new d,f.prototype.type="RulesetCall",f.prototype.eval=function(a){var b=new e(this.variable).eval(a);return b.callEval(a)},b.exports=f},{"./node":70,"./variable":82}],76:[function(a,b,c){var d=a("./node"),e=a("./rule"),f=a("./selector"),g=a("./element"),h=a("./paren"),i=a("../contexts"),j=a("../functions/function-registry"),k=a("../functions/default"),l=a("./debug-info"),m=function(a,b,c,d){this.selectors=a,this.rules=b,this._lookups={},this.strictImports=c,this.copyVisibilityInfo(d),this.allowRoot=!0};m.prototype=new d,m.prototype.type="Ruleset",m.prototype.isRuleset=!0,m.prototype.isRulesetLike=!0,m.prototype.accept=function(a){this.paths?this.paths=a.visitArray(this.paths,!0):this.selectors&&(this.selectors=a.visitArray(this.selectors)),this.rules&&this.rules.length&&(this.rules=a.visitArray(this.rules))},m.prototype.eval=function(a){var b,c,d,f,g=this.selectors,h=!1;if(g&&(c=g.length)){for(b=[],k.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),f=0;f<c;f++)d=g[f].eval(a),b.push(d),d.evaldCondition&&(h=!0);k.reset()}else h=!0;var i,l,n=this.rules?this.rules.slice(0):null,o=new m(b,n,this.strictImports,this.visibilityInfo());o.originalRuleset=this,o.root=this.root,o.firstRoot=this.firstRoot,o.allowImports=this.allowImports,this.debugInfo&&(o.debugInfo=this.debugInfo),h||(n.length=0),o.functionRegistry=function(a){for(var b,c=0,d=a.length;c!==d;++c)if(b=a[c].functionRegistry)return b;return j}(a.frames).inherit();var p=a.frames;p.unshift(o);var q=a.selectors;q||(a.selectors=q=[]),q.unshift(this.selectors),(o.root||o.allowImports||!o.strictImports)&&o.evalImports(a);var r=o.rules,s=r?r.length:0;for(f=0;f<s;f++)r[f].evalFirst&&(r[f]=r[f].eval(a));var t=a.mediaBlocks&&a.mediaBlocks.length||0;for(f=0;f<s;f++)"MixinCall"===r[f].type?(n=r[f].eval(a).filter(function(a){return!(a instanceof e&&a.variable)||!o.variable(a.name)}),r.splice.apply(r,[f,1].concat(n)),s+=n.length-1,f+=n.length-1,o.resetCache()):"RulesetCall"===r[f].type&&(n=r[f].eval(a).rules.filter(function(a){return!(a instanceof e&&a.variable)}),r.splice.apply(r,[f,1].concat(n)),s+=n.length-1,f+=n.length-1,o.resetCache());for(f=0;f<r.length;f++)i=r[f],i.evalFirst||(r[f]=i=i.eval?i.eval(a):i);for(f=0;f<r.length;f++)if(i=r[f],i instanceof m&&i.selectors&&1===i.selectors.length&&i.selectors[0].isJustParentSelector()){r.splice(f--,1);for(var u=0;u<i.rules.length;u++)l=i.rules[u],l.copyVisibilityInfo(i.visibilityInfo()),l instanceof e&&l.variable||r.splice(++f,0,l)}if(p.shift(),q.shift(),a.mediaBlocks)for(f=t;f<a.mediaBlocks.length;f++)a.mediaBlocks[f].bubbleSelectors(b);return o},m.prototype.evalImports=function(a){var b,c,d=this.rules;if(d)for(b=0;b<d.length;b++)"Import"===d[b].type&&(c=d[b].eval(a),c&&(c.length||0===c.length)?(d.splice.apply(d,[b,1].concat(c)),b+=c.length-1):d.splice(b,1,c),this.resetCache())},m.prototype.makeImportant=function(){var a=new m(this.selectors,this.rules.map(function(a){return a.makeImportant?a.makeImportant():a}),this.strictImports,this.visibilityInfo());return a},m.prototype.matchArgs=function(a){return!a||0===a.length},m.prototype.matchCondition=function(a,b){var c=this.selectors[this.selectors.length-1];return!!c.evaldCondition&&!(c.condition&&!c.condition.eval(new i.Eval(b,b.frames)))},m.prototype.resetCache=function(){this._rulesets=null,this._variables=null,this._lookups={}},m.prototype.variables=function(){return this._variables||(this._variables=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable===!0&&(a[b.name]=b),"Import"===b.type&&b.root&&b.root.variables){var c=b.root.variables();for(var d in c)c.hasOwnProperty(d)&&(a[d]=c[d])}return a},{}):{}),this._variables},m.prototype.variable=function(a){return this.variables()[a]},m.prototype.rulesets=function(){if(!this.rules)return[];var a,b,c=[],d=this.rules,e=d.length;for(a=0;a<e;a++)b=d[a],b.isRuleset&&c.push(b);return c},m.prototype.prependRule=function(a){var b=this.rules;b?b.unshift(a):this.rules=[a]},m.prototype.find=function(a,b,c){b=b||this;var d,e,g=[],h=a.toCSS();return h in this._lookups?this._lookups[h]:(this.rulesets().forEach(function(h){if(h!==b)for(var i=0;i<h.selectors.length;i++)if(d=a.match(h.selectors[i])){if(a.elements.length>d){if(!c||c(h)){e=h.find(new f(a.elements.slice(d)),b,c);for(var j=0;j<e.length;++j)e[j].path.push(h);Array.prototype.push.apply(g,e)}}else g.push({rule:h,path:[]});break}}),this._lookups[h]=g,g)},m.prototype.genCSS=function(a,b){function c(a){return"boolean"==typeof a.isRulesetLike?a.isRulesetLike:"function"==typeof a.isRulesetLike&&a.isRulesetLike()}var d,e,f,g,h,i=[],j=[];a.tabLevel=a.tabLevel||0,this.root||a.tabLevel++;var k,m=a.compress?"":Array(a.tabLevel+1).join("  "),n=a.compress?"":Array(a.tabLevel).join("  "),o=0,p=0;for(d=0;d<this.rules.length;d++)g=this.rules[d],"Comment"===g.type?(p===d&&p++,j.push(g)):g.isCharset&&g.isCharset()?(j.splice(o,0,g),o++,p++):"Import"===g.type?(j.splice(p,0,g),p++):j.push(g);if(j=i.concat(j),!this.root){f=l(a,this,n),f&&(b.add(f),b.add(n));var q,r=this.paths,s=r.length;for(k=a.compress?",":",\n"+n,d=0;d<s;d++)if(h=r[d],q=h.length)for(d>0&&b.add(k),a.firstSelector=!0,h[0].genCSS(a,b),a.firstSelector=!1,e=1;e<q;e++)h[e].genCSS(a,b);b.add((a.compress?"{":" {\n")+m)}for(d=0;d<j.length;d++){g=j[d],d+1===j.length&&(a.lastRule=!0);var t=a.lastRule;c(g)&&(a.lastRule=!1),g.genCSS?g.genCSS(a,b):g.value&&b.add(g.value.toString()),a.lastRule=t,a.lastRule?a.lastRule=!1:b.add(a.compress?"":"\n"+m)}this.root||(b.add(a.compress?"}":"\n"+n+"}"),a.tabLevel--),b.isEmpty()||a.compress||!this.firstRoot||b.add("\n")},m.prototype.joinSelectors=function(a,b,c){for(var d=0;d<c.length;d++)this.joinSelector(a,b,c[d])},m.prototype.joinSelector=function(a,b,c){function d(a,b){var c,d;if(0===a.length)c=new h(a[0]);else{var e=[];for(d=0;d<a.length;d++)e.push(new g(null,a[d],b.index,b.currentFileInfo));c=new h(new f(e))}return c}function e(a,b){var c,d;return c=new g(null,a,b.index,b.currentFileInfo),d=new f([c])}function i(a,b,c,d){var e,f,h;if(e=[],a.length>0?(e=a.slice(0),f=e.pop(),h=d.createDerived(f.elements.slice(0))):h=d.createDerived([]),b.length>0){var i=c.combinator,j=b[0].elements[0];i.emptyOrWhitespace&&!j.combinator.emptyOrWhitespace&&(i=j.combinator),h.elements.push(new g(i,j.value,c.index,c.currentFileInfo)),h.elements=h.elements.concat(b[0].elements.slice(1))}if(0!==h.elements.length&&e.push(h),b.length>1){var k=b.slice(1);k=k.map(function(a){return a.createDerived(a.elements,[])}),e=e.concat(k)}return e}function j(a,b,c,d,e){var f;for(f=0;f<a.length;f++){var g=i(a[f],b,c,d);e.push(g)}return e}function k(a,b){var c,d;if(0!==a.length){if(0===b.length)return void b.push([new f(a)]);for(c=0;c<b.length;c++)d=b[c],d.length>0?d[d.length-1]=d[d.length-1].createDerived(d[d.length-1].elements.concat(a)):d.push(new f(a))}}function l(a,b,c){function f(a){var b;return"Paren"!==a.value.type?null:(b=a.value.value,"Selector"!==b.type?null:b)}var h,m,n,o,p,q,r,s,t,u,v=!1;for(o=[],p=[[]],h=0;h<c.elements.length;h++)if(s=c.elements[h],"&"!==s.value){var w=f(s);if(null!=w){k(o,p);var x,y=[],z=[];for(x=l(y,b,w),v=v||x,n=0;n<y.length;n++){var A=e(d(y[n],s),s);j(p,[A],s,c,z)}p=z,o=[]}else o.push(s)}else{for(v=!0,q=[],k(o,p),m=0;m<p.length;m++)if(r=p[m],0===b.length)r.length>0&&r[0].elements.push(new g(s.combinator,"",s.index,s.currentFileInfo)),q.push(r);else for(n=0;n<b.length;n++){var B=i(r,b[n],s,c);q.push(B)}p=q,o=[]}for(k(o,p),h=0;h<p.length;h++)t=p[h].length,t>0&&(a.push(p[h]),u=p[h][t-1],p[h][t-1]=u.createDerived(u.elements,c.extendList));return v}function m(a,b){var c=b.createDerived(b.elements,b.extendList,b.evaldCondition);return c.copyVisibilityInfo(a),c}var n,o,p;if(o=[],p=l(o,b,c),!p)if(b.length>0)for(o=[],n=0;n<b.length;n++){var q=b[n].map(m.bind(this,c.visibilityInfo()));q.push(c),o.push(q)}else o=[[c]];for(n=0;n<o.length;n++)a.push(o[n])},b.exports=m},{"../contexts":11,"../functions/default":20,"../functions/function-registry":22,"./debug-info":54,"./element":58,"./node":70,"./paren":72,"./rule":74,"./selector":77}],77:[function(a,b,c){var d=a("./node"),e=a("./element"),f=function(a,b,c,d,e,f){this.elements=a,this.extendList=b,this.condition=c,this.currentFileInfo=e||{},c||(this.evaldCondition=!0),this.copyVisibilityInfo(f)};f.prototype=new d,f.prototype.type="Selector",f.prototype.accept=function(a){this.elements&&(this.elements=a.visitArray(this.elements)),this.extendList&&(this.extendList=a.visitArray(this.extendList)),this.condition&&(this.condition=a.visit(this.condition))},f.prototype.createDerived=function(a,b,c){var d=this.visibilityInfo();c=null!=c?c:this.evaldCondition;var e=new f(a,b||this.extendList,null,this.index,this.currentFileInfo,d);return e.evaldCondition=c,e.mediaEmpty=this.mediaEmpty,e},f.prototype.createEmptySelectors=function(){var a=new e("","&",this.index,this.currentFileInfo),b=[new f([a],null,null,this.index,this.currentFileInfo)];return b[0].mediaEmpty=!0,b},f.prototype.match=function(a){var b,c,d=this.elements,e=d.length;if(a.CacheElements(),b=a._elements.length,0===b||e<b)return 0;for(c=0;c<b;c++)if(d[c].value!==a._elements[c])return 0;return b},f.prototype.CacheElements=function(){if(!this._elements){var a=this.elements.map(function(a){return a.combinator.value+(a.value.value||a.value)}).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);a?"&"===a[0]&&a.shift():a=[],this._elements=a}},f.prototype.isJustParentSelector=function(){return!this.mediaEmpty&&1===this.elements.length&&"&"===this.elements[0].value&&(" "===this.elements[0].combinator.value||""===this.elements[0].combinator.value)},f.prototype.eval=function(a){var b=this.condition&&this.condition.eval(a),c=this.elements,d=this.extendList;return c=c&&c.map(function(b){return b.eval(a)}),d=d&&d.map(function(b){return b.eval(a)}),this.createDerived(c,d,b)},f.prototype.genCSS=function(a,b){var c,d;if(a&&a.firstSelector||""!==this.elements[0].combinator.value||b.add(" ",this.currentFileInfo,this.index),!this._css)for(c=0;c<this.elements.length;c++)d=this.elements[c],d.genCSS(a,b)},f.prototype.getIsOutput=function(){return this.evaldCondition},b.exports=f},{"./element":58,"./node":70}],78:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="UnicodeDescriptor",b.exports=e},{"./node":70}],79:[function(a,b,c){var d=a("./node"),e=a("../data/unit-conversions"),f=function(a,b,c){this.numerator=a?a.slice(0).sort():[],this.denominator=b?b.slice(0).sort():[],c?this.backupUnit=c:a&&a.length&&(this.backupUnit=a[0])};f.prototype=new d,f.prototype.type="Unit",f.prototype.clone=function(){return new f(this.numerator.slice(0),this.denominator.slice(0),this.backupUnit)},f.prototype.genCSS=function(a,b){var c=a&&a.strictUnits;1===this.numerator.length?b.add(this.numerator[0]):!c&&this.backupUnit?b.add(this.backupUnit):!c&&this.denominator.length&&b.add(this.denominator[0])},f.prototype.toString=function(){var a,b=this.numerator.join("*");for(a=0;a<this.denominator.length;a++)b+="/"+this.denominator[a];return b},f.prototype.compare=function(a){return this.is(a.toString())?0:void 0},f.prototype.is=function(a){return this.toString().toUpperCase()===a.toUpperCase()},f.prototype.isLength=function(){return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/))},f.prototype.isEmpty=function(){return 0===this.numerator.length&&0===this.denominator.length},f.prototype.isSingular=function(){return this.numerator.length<=1&&0===this.denominator.length},f.prototype.map=function(a){var b;for(b=0;b<this.numerator.length;b++)this.numerator[b]=a(this.numerator[b],!1);for(b=0;b<this.denominator.length;b++)this.denominator[b]=a(this.denominator[b],!0)},f.prototype.usedUnits=function(){var a,b,c,d={};b=function(b){return a.hasOwnProperty(b)&&!d[c]&&(d[c]=b),b};for(c in e)e.hasOwnProperty(c)&&(a=e[c],this.map(b));return d},f.prototype.cancel=function(){var a,b,c={};for(b=0;b<this.numerator.length;b++)a=this.numerator[b],c[a]=(c[a]||0)+1;for(b=0;b<this.denominator.length;b++)a=this.denominator[b],c[a]=(c[a]||0)-1;this.numerator=[],this.denominator=[];for(a in c)if(c.hasOwnProperty(a)){var d=c[a];if(d>0)for(b=0;b<d;b++)this.numerator.push(a);else if(d<0)for(b=0;b<-d;b++)this.denominator.push(a)}this.numerator.sort(),this.denominator.sort()},b.exports=f},{"../data/unit-conversions":14,"./node":70}],80:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d){this.value=a,this.currentFileInfo=c,this.index=b,this.isEvald=d};e.prototype=new d,e.prototype.type="Url",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.genCSS=function(a,b){b.add("url("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){var b,c=this.value.eval(a);if(!this.isEvald&&(b=this.currentFileInfo&&this.currentFileInfo.rootpath,b&&"string"==typeof c.value&&a.isPathRelative(c.value)&&(c.quote||(b=b.replace(/[\(\)'"\s]/g,function(a){return"\\"+a})),c.value=b+c.value),c.value=a.normalizePath(c.value),a.urlArgs&&!c.value.match(/^\s*data:/))){var d=c.value.indexOf("?")===-1?"?":"&",f=d+a.urlArgs;c.value.indexOf("#")!==-1?c.value=c.value.replace("#",f+"#"):c.value+=f}return new e(c,this.index,this.currentFileInfo,(!0))},b.exports=e},{"./node":70}],81:[function(a,b,c){var d=a("./node"),e=function(a){if(this.value=a,!a)throw new Error("Value requires an array argument")};e.prototype=new d,e.prototype.type="Value",e.prototype.accept=function(a){this.value&&(this.value=a.visitArray(this.value))},e.prototype.eval=function(a){return 1===this.value.length?this.value[0].eval(a):new e(this.value.map(function(b){return b.eval(a)}))},e.prototype.genCSS=function(a,b){var c;for(c=0;c<this.value.length;c++)this.value[c].genCSS(a,b),c+1<this.value.length&&b.add(a&&a.compress?",":", ")},b.exports=e},{"./node":70}],82:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.name=a,this.index=b,this.currentFileInfo=c||{}};e.prototype=new d,e.prototype.type="Variable",e.prototype.eval=function(a){var b,c=this.name;if(0===c.indexOf("@@")&&(c="@"+new e(c.slice(1),this.index,this.currentFileInfo).eval(a).value),this.evaluating)throw{type:"Name",message:"Recursive variable definition for "+c,filename:this.currentFileInfo.filename,index:this.index};if(this.evaluating=!0,b=this.find(a.frames,function(b){var d=b.variable(c);if(d){if(d.important){var e=a.importantScope[a.importantScope.length-1];e.important=d.important}return d.value.eval(a)}}))return this.evaluating=!1,b;throw{type:"Name",message:"variable "+c+" is undefined",filename:this.currentFileInfo.filename,index:this.index}},e.prototype.find=function(a,b){for(var c,d=0;d<a.length;d++)if(c=b.call(a,a[d]))return c;return null},b.exports=e},{"./node":70}],83:[function(a,b,c){b.exports={getLocation:function(a,b){for(var c=a+1,d=null,e=-1;--c>=0&&"\n"!==b.charAt(c);)e++;return"number"==typeof a&&(d=(b.slice(0,a).match(/\n/g)||"").length),{line:d,column:e}}}},{}],84:[function(a,b,c){var d=a("../tree"),e=a("./visitor"),f=a("../logger"),g=function(){this._visitor=new e(this),this.contexts=[],this.allExtendsStack=[[]]};g.prototype={run:function(a){return a=this._visitor.visit(a),a.allExtends=this.allExtendsStack[0],a},visitRule:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){if(!a.root){var c,e,f,g,h=[],i=a.rules,j=i?i.length:0;for(c=0;c<j;c++)a.rules[c]instanceof d.Extend&&(h.push(i[c]),a.extendOnEveryPath=!0);var k=a.paths;for(c=0;c<k.length;c++){var l=k[c],m=l[l.length-1],n=m.extendList;for(g=n?n.slice(0).concat(h):h,g&&(g=g.map(function(a){return a.clone()})),e=0;e<g.length;e++)this.foundExtends=!0,f=g[e],f.findSelfSelectors(l),f.ruleset=a,0===e&&(f.firstExtendOnThisSelectorPath=!0),this.allExtendsStack[this.allExtendsStack.length-1].push(f)}this.contexts.push(a.selectors)}},visitRulesetOut:function(a){a.root||(this.contexts.length=this.contexts.length-1)},visitMedia:function(a,b){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitMediaOut:function(a){this.allExtendsStack.length=this.allExtendsStack.length-1},visitDirective:function(a,b){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitDirectiveOut:function(a){this.allExtendsStack.length=this.allExtendsStack.length-1}};var h=function(){this._visitor=new e(this)};h.prototype={run:function(a){var b=new g;if(this.extendIndices={},b.run(a),!b.foundExtends)return a;a.allExtends=a.allExtends.concat(this.doExtendChaining(a.allExtends,a.allExtends)),this.allExtendsStack=[a.allExtends];var c=this._visitor.visit(a);return this.checkExtendsForNonMatched(a.allExtends),c},checkExtendsForNonMatched:function(a){var b=this.extendIndices;a.filter(function(a){return!a.hasFoundMatches&&1==a.parent_ids.length}).forEach(function(a){var c="_unknown_";try{c=a.selector.toCSS({})}catch(d){}b[a.index+" "+c]||(b[a.index+" "+c]=!0,f.warn("extend '"+c+"' has no matches"))})},doExtendChaining:function(a,b,c){var e,f,g,h,i,j,k,l,m=[],n=this;for(c=c||0,e=0;e<a.length;e++)for(f=0;f<b.length;f++)j=a[e],k=b[f],j.parent_ids.indexOf(k.object_id)>=0||(i=[k.selfSelectors[0]],g=n.findMatch(j,i),g.length&&(j.hasFoundMatches=!0,j.selfSelectors.forEach(function(a){var b=k.visibilityInfo();h=n.extendSelector(g,i,a,j.isVisible()),l=new d.Extend(k.selector,k.option,0,k.currentFileInfo,b),l.selfSelectors=h,h[h.length-1].extendList=[l],m.push(l),l.ruleset=k.ruleset,l.parent_ids=l.parent_ids.concat(k.parent_ids,j.parent_ids),k.firstExtendOnThisSelectorPath&&(l.firstExtendOnThisSelectorPath=!0,k.ruleset.paths.push(h))})));if(m.length){if(this.extendChainCount++,c>100){var o="{unable to calculate}",p="{unable to calculate}";try{o=m[0].selfSelectors[0].toCSS(),p=m[0].selector.toCSS()}catch(q){}throw{message:"extend circular reference detected. One of the circular extends is currently:"+o+":extend("+p+")"}}return m.concat(n.doExtendChaining(m,b,c+1))}return m},visitRule:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitSelector:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){if(!a.root){var c,d,e,f,g=this.allExtendsStack[this.allExtendsStack.length-1],h=[],i=this;for(e=0;e<g.length;e++)for(d=0;d<a.paths.length;d++)if(f=a.paths[d],!a.extendOnEveryPath){var j=f[f.length-1].extendList;j&&j.length||(c=this.findMatch(g[e],f),c.length&&(g[e].hasFoundMatches=!0,g[e].selfSelectors.forEach(function(a){var b;b=i.extendSelector(c,f,a,g[e].isVisible()),h.push(b)})))}a.paths=a.paths.concat(h)}},findMatch:function(a,b){var c,d,e,f,g,h,i,j=this,k=a.selector.elements,l=[],m=[];for(c=0;c<b.length;c++)for(d=b[c],e=0;e<d.elements.length;e++)for(f=d.elements[e],(a.allowBefore||0===c&&0===e)&&l.push({pathIndex:c,index:e,matched:0,initialCombinator:f.combinator}),h=0;h<l.length;h++)i=l[h],g=f.combinator.value,""===g&&0===e&&(g=" "),!j.isElementValuesEqual(k[i.matched].value,f.value)||i.matched>0&&k[i.matched].combinator.value!==g?i=null:i.matched++,i&&(i.finished=i.matched===k.length,i.finished&&!a.allowAfter&&(e+1<d.elements.length||c+1<b.length)&&(i=null)),i?i.finished&&(i.length=k.length,i.endPathIndex=c,i.endPathElementIndex=e+1,l.length=0,m.push(i)):(l.splice(h,1),h--);return m},isElementValuesEqual:function(a,b){if("string"==typeof a||"string"==typeof b)return a===b;if(a instanceof d.Attribute)return a.op===b.op&&a.key===b.key&&(a.value&&b.value?(a=a.value.value||a.value,b=b.value.value||b.value,a===b):!a.value&&!b.value);if(a=a.value,b=b.value,a instanceof d.Selector){if(!(b instanceof d.Selector)||a.elements.length!==b.elements.length)return!1;for(var c=0;c<a.elements.length;c++){if(a.elements[c].combinator.value!==b.elements[c].combinator.value&&(0!==c||(a.elements[c].combinator.value||" ")!==(b.elements[c].combinator.value||" ")))return!1;if(!this.isElementValuesEqual(a.elements[c].value,b.elements[c].value))return!1}return!0}return!1},extendSelector:function(a,b,c,e){var f,g,h,i,j,k=0,l=0,m=[];for(f=0;f<a.length;f++)i=a[f],g=b[i.pathIndex],h=new d.Element(i.initialCombinator,c.elements[0].value,c.elements[0].index,c.elements[0].currentFileInfo),i.pathIndex>k&&l>0&&(m[m.length-1].elements=m[m.length-1].elements.concat(b[k].elements.slice(l)),l=0,k++),j=g.elements.slice(l,i.index).concat([h]).concat(c.elements.slice(1)),k===i.pathIndex&&f>0?m[m.length-1].elements=m[m.length-1].elements.concat(j):(m=m.concat(b.slice(k,i.pathIndex)),m.push(new d.Selector(j))),k=i.endPathIndex,l=i.endPathElementIndex,l>=b[k].elements.length&&(l=0,k++);return k<b.length&&l>0&&(m[m.length-1].elements=m[m.length-1].elements.concat(b[k].elements.slice(l)),k++),m=m.concat(b.slice(k,b.length)),m=m.map(function(a){var b=a.createDerived(a.elements);return e?b.ensureVisibility():b.ensureInvisibility(),b})},visitMedia:function(a,b){var c=a.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);c=c.concat(this.doExtendChaining(c,a.allExtends)),this.allExtendsStack.push(c)},visitMediaOut:function(a){var b=this.allExtendsStack.length-1;this.allExtendsStack.length=b},visitDirective:function(a,b){var c=a.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);c=c.concat(this.doExtendChaining(c,a.allExtends)),this.allExtendsStack.push(c)},visitDirectiveOut:function(a){var b=this.allExtendsStack.length-1;this.allExtendsStack.length=b}},b.exports=h},{"../logger":33,"../tree":62,"./visitor":91}],85:[function(a,b,c){function d(a){this.imports=[],this.variableImports=[],this._onSequencerEmpty=a,this._currentDepth=0}d.prototype.addImport=function(a){var b=this,c={callback:a,args:null,isReady:!1};return this.imports.push(c),function(){c.args=Array.prototype.slice.call(arguments,0),c.isReady=!0,b.tryRun()}},d.prototype.addVariableImport=function(a){this.variableImports.push(a)},d.prototype.tryRun=function(){this._currentDepth++;try{for(;;){for(;this.imports.length>0;){var a=this.imports[0];if(!a.isReady)return;
-this.imports=this.imports.slice(1),a.callback.apply(null,a.args)}if(0===this.variableImports.length)break;var b=this.variableImports[0];this.variableImports=this.variableImports.slice(1),b()}}finally{this._currentDepth--}0===this._currentDepth&&this._onSequencerEmpty&&this._onSequencerEmpty()},b.exports=d},{}],86:[function(a,b,c){var d=a("../contexts"),e=a("./visitor"),f=a("./import-sequencer"),g=function(a,b){this._visitor=new e(this),this._importer=a,this._finish=b,this.context=new d.Eval,this.importCount=0,this.onceFileDetectionMap={},this.recursionDetector={},this._sequencer=new f(this._onSequencerEmpty.bind(this))};g.prototype={isReplacing:!1,run:function(a){try{this._visitor.visit(a)}catch(b){this.error=b}this.isFinished=!0,this._sequencer.tryRun()},_onSequencerEmpty:function(){this.isFinished&&this._finish(this.error)},visitImport:function(a,b){var c=a.options.inline;if(!a.css||c){var e=new d.Eval(this.context,this.context.frames.slice(0)),f=e.frames[0];this.importCount++,a.isVariableImport()?this._sequencer.addVariableImport(this.processImportNode.bind(this,a,e,f)):this.processImportNode(a,e,f)}b.visitDeeper=!1},processImportNode:function(a,b,c){var d,e=a.options.inline;try{d=a.evalForImport(b)}catch(f){f.filename||(f.index=a.index,f.filename=a.currentFileInfo.filename),a.css=!0,a.error=f}if(!d||d.css&&!e)this.importCount--,this.isFinished&&this._sequencer.tryRun();else{d.options.multiple&&(b.importMultiple=!0);for(var g=void 0===d.css,h=0;h<c.rules.length;h++)if(c.rules[h]===a){c.rules[h]=d;break}var i=this.onImported.bind(this,d,b),j=this._sequencer.addImport(i);this._importer.push(d.getPath(),g,d.currentFileInfo,d.options,j)}},onImported:function(a,b,c,d,e,f){c&&(c.filename||(c.index=a.index,c.filename=a.currentFileInfo.filename),this.error=c);var g=this,h=a.options.inline,i=a.options.plugin,j=a.options.optional,k=e||f in g.recursionDetector;if(b.importMultiple||(a.skip=!!k||function(){return f in g.onceFileDetectionMap||(g.onceFileDetectionMap[f]=!0,!1)}),!f&&j&&(a.skip=!0),d&&(a.root=d,a.importedFilename=f,!h&&!i&&(b.importMultiple||!k))){g.recursionDetector[f]=!0;var l=this.context;this.context=b;try{this._visitor.visit(d)}catch(c){this.error=c}this.context=l}g.importCount--,g.isFinished&&g._sequencer.tryRun()},visitRule:function(a,b){"DetachedRuleset"===a.value.type?this.context.frames.unshift(a):b.visitDeeper=!1},visitRuleOut:function(a){"DetachedRuleset"===a.value.type&&this.context.frames.shift()},visitDirective:function(a,b){this.context.frames.unshift(a)},visitDirectiveOut:function(a){this.context.frames.shift()},visitMixinDefinition:function(a,b){this.context.frames.unshift(a)},visitMixinDefinitionOut:function(a){this.context.frames.shift()},visitRuleset:function(a,b){this.context.frames.unshift(a)},visitRulesetOut:function(a){this.context.frames.shift()},visitMedia:function(a,b){this.context.frames.unshift(a.rules[0])},visitMediaOut:function(a){this.context.frames.shift()}},b.exports=g},{"../contexts":11,"./import-sequencer":85,"./visitor":91}],87:[function(a,b,c){var d={Visitor:a("./visitor"),ImportVisitor:a("./import-visitor"),MarkVisibleSelectorsVisitor:a("./set-tree-visibility-visitor"),ExtendVisitor:a("./extend-visitor"),JoinSelectorVisitor:a("./join-selector-visitor"),ToCSSVisitor:a("./to-css-visitor")};b.exports=d},{"./extend-visitor":84,"./import-visitor":86,"./join-selector-visitor":88,"./set-tree-visibility-visitor":89,"./to-css-visitor":90,"./visitor":91}],88:[function(a,b,c){var d=a("./visitor"),e=function(){this.contexts=[[]],this._visitor=new d(this)};e.prototype={run:function(a){return this._visitor.visit(a)},visitRule:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){var c,d=this.contexts[this.contexts.length-1],e=[];this.contexts.push(e),a.root||(c=a.selectors,c&&(c=c.filter(function(a){return a.getIsOutput()}),a.selectors=c.length?c:c=null,c&&a.joinSelectors(e,d,c)),c||(a.rules=null),a.paths=e)},visitRulesetOut:function(a){this.contexts.length=this.contexts.length-1},visitMedia:function(a,b){var c=this.contexts[this.contexts.length-1];a.rules[0].root=0===c.length||c[0].multiMedia},visitDirective:function(a,b){var c=this.contexts[this.contexts.length-1];a.rules&&a.rules.length&&(a.rules[0].root=a.isRooted||0===c.length||null)}},b.exports=e},{"./visitor":91}],89:[function(a,b,c){var d=function(a){this.visible=a};d.prototype.run=function(a){this.visit(a)},d.prototype.visitArray=function(a){if(!a)return a;var b,c=a.length;for(b=0;b<c;b++)this.visit(a[b]);return a},d.prototype.visit=function(a){return a?a.constructor===Array?this.visitArray(a):!a.blocksVisibility||a.blocksVisibility()?a:(this.visible?a.ensureVisibility():a.ensureInvisibility(),a.accept(this),a):a},b.exports=d},{}],90:[function(a,b,c){var d=a("../tree"),e=a("./visitor"),f=function(a){this._visitor=new e(this),this._context=a};f.prototype={containsSilentNonBlockedChild:function(a){var b;if(null==a)return!1;for(var c=0;c<a.length;c++)if(b=a[c],b.isSilent&&b.isSilent(this._context)&&!b.blocksVisibility())return!0;return!1},keepOnlyVisibleChilds:function(a){null!=a&&null!=a.rules&&(a.rules=a.rules.filter(function(a){return a.isVisible()}))},isEmpty:function(a){return null==a||null==a.rules||0===a.rules.length},hasVisibleSelector:function(a){return null!=a&&null!=a.paths&&a.paths.length>0},resolveVisibility:function(a,b){if(!a.blocksVisibility()){if(this.isEmpty(a)&&!this.containsSilentNonBlockedChild(b))return;return a}var c=a.rules[0];if(this.keepOnlyVisibleChilds(c),!this.isEmpty(c))return a.ensureVisibility(),a.removeVisibilityBlock(),a},isVisibleRuleset:function(a){return!!a.firstRoot||!this.isEmpty(a)&&!(!a.root&&!this.hasVisibleSelector(a))}};var g=function(a){this._visitor=new e(this),this._context=a,this.utils=new f(a)};g.prototype={isReplacing:!0,run:function(a){return this._visitor.visit(a)},visitRule:function(a,b){if(!a.blocksVisibility()&&!a.variable)return a},visitMixinDefinition:function(a,b){a.frames=[]},visitExtend:function(a,b){},visitComment:function(a,b){if(!a.blocksVisibility()&&!a.isSilent(this._context))return a},visitMedia:function(a,b){var c=a.rules[0].rules;return a.accept(this._visitor),b.visitDeeper=!1,this.utils.resolveVisibility(a,c)},visitImport:function(a,b){if(!a.blocksVisibility())return a},visitDirective:function(a,b){return a.rules&&a.rules.length?this.visitDirectiveWithBody(a,b):this.visitDirectiveWithoutBody(a,b)},visitDirectiveWithBody:function(a,b){function c(a){var b=a.rules;return 1===b.length&&(!b[0].paths||0===b[0].paths.length)}function d(a){var b=a.rules;return c(a)?b[0].rules:b}var e=d(a);return a.accept(this._visitor),b.visitDeeper=!1,this.utils.isEmpty(a)||this._mergeRules(a.rules[0].rules),this.utils.resolveVisibility(a,e)},visitDirectiveWithoutBody:function(a,b){if(!a.blocksVisibility()){if("@charset"===a.name){if(this.charset){if(a.debugInfo){var c=new d.Comment("/* "+a.toCSS(this._context).replace(/\n/g,"")+" */\n");return c.debugInfo=a.debugInfo,this._visitor.visit(c)}return}this.charset=!0}return a}},checkValidNodes:function(a,b){if(a)for(var c=0;c<a.length;c++){var e=a[c];if(b&&e instanceof d.Rule&&!e.variable)throw{message:"Properties must be inside selector blocks. They cannot be in the root",index:e.index,filename:e.currentFileInfo&&e.currentFileInfo.filename};if(e instanceof d.Call)throw{message:"Function '"+e.name+"' is undefined",index:e.index,filename:e.currentFileInfo&&e.currentFileInfo.filename};if(e.type&&!e.allowRoot)throw{message:e.type+" node returned by a function is not valid here",index:e.index,filename:e.currentFileInfo&&e.currentFileInfo.filename}}},visitRuleset:function(a,b){var c,d=[];if(this.checkValidNodes(a.rules,a.firstRoot),a.root)a.accept(this._visitor),b.visitDeeper=!1;else{this._compileRulesetPaths(a);for(var e=a.rules,f=e?e.length:0,g=0;g<f;)c=e[g],c&&c.rules?(d.push(this._visitor.visit(c)),e.splice(g,1),f--):g++;f>0?a.accept(this._visitor):a.rules=null,b.visitDeeper=!1}return a.rules&&(this._mergeRules(a.rules),this._removeDuplicateRules(a.rules)),this.utils.isVisibleRuleset(a)&&(a.ensureVisibility(),d.splice(0,0,a)),1===d.length?d[0]:d},_compileRulesetPaths:function(a){a.paths&&(a.paths=a.paths.filter(function(a){var b;for(" "===a[0].elements[0].combinator.value&&(a[0].elements[0].combinator=new d.Combinator("")),b=0;b<a.length;b++)if(a[b].isVisible()&&a[b].getIsOutput())return!0;return!1}))},_removeDuplicateRules:function(a){if(a){var b,c,e,f={};for(e=a.length-1;e>=0;e--)if(c=a[e],c instanceof d.Rule)if(f[c.name]){b=f[c.name],b instanceof d.Rule&&(b=f[c.name]=[f[c.name].toCSS(this._context)]);var g=c.toCSS(this._context);b.indexOf(g)!==-1?a.splice(e,1):b.push(g)}else f[c.name]=c}},_mergeRules:function(a){if(a){for(var b,c,e,f={},g=0;g<a.length;g++)c=a[g],c instanceof d.Rule&&c.merge&&(e=[c.name,c.important?"!":""].join(","),f[e]?a.splice(g--,1):f[e]=[],f[e].push(c));Object.keys(f).map(function(a){function e(a){return new d.Expression(a.map(function(a){return a.value}))}function g(a){return new d.Value(a.map(function(a){return a}))}if(b=f[a],b.length>1){c=b[0];var h=[],i=[];b.map(function(a){"+"===a.merge&&(i.length>0&&h.push(e(i)),i=[]),i.push(a)}),h.push(e(i)),c.value=g(h)}})}},visitAnonymous:function(a,b){if(!a.blocksVisibility())return a.accept(this._visitor),a}},b.exports=g},{"../tree":62,"./visitor":91}],91:[function(a,b,c){function d(a){return a}function e(a,b){var c,d;for(c in a)if(a.hasOwnProperty(c))switch(d=a[c],typeof d){case"function":d.prototype&&d.prototype.type&&(d.prototype.typeIndex=b++);break;case"object":b=e(d,b)}return b}var f=a("../tree"),g={visitDeeper:!0},h=!1,i=function(a){this._implementation=a,this._visitFnCache=[],h||(e(f,1),h=!0)};i.prototype={visit:function(a){if(!a)return a;var b=a.typeIndex;if(!b)return a;var c,e=this._visitFnCache,f=this._implementation,h=b<<1,i=1|h,j=e[h],k=e[i],l=g;if(l.visitDeeper=!0,j||(c="visit"+a.type,j=f[c]||d,k=f[c+"Out"]||d,e[h]=j,e[i]=k),j!==d){var m=j.call(f,a,l);f.isReplacing&&(a=m)}return l.visitDeeper&&a&&a.accept&&a.accept(this),k!=d&&k.call(f,a),a},visitArray:function(a,b){if(!a)return a;var c,d=a.length;if(b||!this._implementation.isReplacing){for(c=0;c<d;c++)this.visit(a[c]);return a}var e=[];for(c=0;c<d;c++){var f=this.visit(a[c]);void 0!==f&&(f.splice?f.length&&this.flatten(f,e):e.push(f))}return e},flatten:function(a,b){b||(b=[]);var c,d,e,f,g,h;for(d=0,c=a.length;d<c;d++)if(e=a[d],void 0!==e)if(e.splice)for(g=0,f=e.length;g<f;g++)h=e[g],void 0!==h&&(h.splice?h.length&&this.flatten(h,b):b.push(h));else b.push(e);return b}},b.exports=i},{"../tree":62}],92:[function(a,b,c){"use strict";function d(){if(i.length)throw i.shift()}function e(a){var b;b=h.length?h.pop():new f,b.task=a,g(b)}function f(){this.task=null}var g=a("./raw"),h=[],i=[],j=g.makeRequestCallFromTimer(d);b.exports=e,f.prototype.call=function(){try{this.task.call()}catch(a){e.onerror?e.onerror(a):(i.push(a),j())}finally{this.task=null,h[h.length]=this}}},{"./raw":93}],93:[function(a,b,c){(function(a){"use strict";function c(a){h.length||(g(),i=!0),h[h.length]=a}function d(){for(;j<h.length;){var a=j;if(j+=1,h[a].call(),j>k){for(var b=0,c=h.length-j;b<c;b++)h[b]=h[b+j];h.length-=j,j=0}}h.length=0,j=0,i=!1}function e(a){var b=1,c=new m(a),d=document.createTextNode("");return c.observe(d,{characterData:!0}),function(){b=-b,d.data=b}}function f(a){return function(){function b(){clearTimeout(c),clearInterval(d),a()}var c=setTimeout(b,0),d=setInterval(b,50)}}b.exports=c;var g,h=[],i=!1,j=0,k=1024,l="undefined"!=typeof a?a:self,m=l.MutationObserver||l.WebKitMutationObserver;g="function"==typeof m?e(d):f(d),c.requestFlush=g,c.makeRequestCallFromTimer=f}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],94:[function(a,b,c){"use strict";function d(){}function e(a){try{return a.then}catch(b){return r=b,s}}function f(a,b){try{return a(b)}catch(c){return r=c,s}}function g(a,b,c){try{a(b,c)}catch(d){return r=d,s}}function h(a){if("object"!=typeof this)throw new TypeError("Promises must be constructed via new");if("function"!=typeof a)throw new TypeError("Promise constructor's argument is not a function");this._40=0,this._65=0,this._55=null,this._72=null,a!==d&&p(a,this)}function i(a,b,c){return new a.constructor(function(e,f){var g=new h(d);g.then(e,f),j(a,new o(b,c,g))})}function j(a,b){for(;3===a._65;)a=a._55;return h._37&&h._37(a),0===a._65?0===a._40?(a._40=1,void(a._72=b)):1===a._40?(a._40=2,void(a._72=[a._72,b])):void a._72.push(b):void k(a,b)}function k(a,b){q(function(){var c=1===a._65?b.onFulfilled:b.onRejected;if(null===c)return void(1===a._65?l(b.promise,a._55):m(b.promise,a._55));var d=f(c,a._55);d===s?m(b.promise,r):l(b.promise,d)})}function l(a,b){if(b===a)return m(a,new TypeError("A promise cannot be resolved with itself."));if(b&&("object"==typeof b||"function"==typeof b)){var c=e(b);if(c===s)return m(a,r);if(c===a.then&&b instanceof h)return a._65=3,a._55=b,void n(a);if("function"==typeof c)return void p(c.bind(b),a)}a._65=1,a._55=b,n(a)}function m(a,b){a._65=2,a._55=b,h._87&&h._87(a,b),n(a)}function n(a){if(1===a._40&&(j(a,a._72),a._72=null),2===a._40){for(var b=0;b<a._72.length;b++)j(a,a._72[b]);a._72=null}}function o(a,b,c){this.onFulfilled="function"==typeof a?a:null,this.onRejected="function"==typeof b?b:null,this.promise=c}function p(a,b){var c=!1,d=g(a,function(a){c||(c=!0,l(b,a))},function(a){c||(c=!0,m(b,a))});c||d!==s||(c=!0,m(b,r))}var q=a("asap/raw"),r=null,s={};b.exports=h,h._37=null,h._87=null,h._61=d,h.prototype.then=function(a,b){if(this.constructor!==h)return i(this,a,b);var c=new h(d);return j(this,new o(a,b,c)),c}},{"asap/raw":93}],95:[function(a,b,c){"use strict";function d(a){var b=new e(e._61);return b._65=1,b._55=a,b}var e=a("./core.js");b.exports=e;var f=d(!0),g=d(!1),h=d(null),i=d(void 0),j=d(0),k=d("");e.resolve=function(a){if(a instanceof e)return a;if(null===a)return h;if(void 0===a)return i;if(a===!0)return f;if(a===!1)return g;if(0===a)return j;if(""===a)return k;if("object"==typeof a||"function"==typeof a)try{var b=a.then;if("function"==typeof b)return new e(b.bind(a))}catch(c){return new e(function(a,b){b(c)})}return d(a)},e.all=function(a){var b=Array.prototype.slice.call(a);return new e(function(a,c){function d(g,h){if(h&&("object"==typeof h||"function"==typeof h)){if(h instanceof e&&h.then===e.prototype.then){for(;3===h._65;)h=h._55;return 1===h._65?d(g,h._55):(2===h._65&&c(h._55),void h.then(function(a){d(g,a)},c))}var i=h.then;if("function"==typeof i){var j=new e(i.bind(h));return void j.then(function(a){d(g,a)},c)}}b[g]=h,0===--f&&a(b)}if(0===b.length)return a([]);for(var f=b.length,g=0;g<b.length;g++)d(g,b[g])})},e.reject=function(a){return new e(function(b,c){c(a)})},e.race=function(a){return new e(function(b,c){a.forEach(function(a){e.resolve(a).then(b,c)})})},e.prototype["catch"]=function(a){return this.then(null,a)}},{"./core.js":94}],96:[function(a,b,c){"function"!=typeof Promise.prototype.done&&(Promise.prototype.done=function(a,b){var c=arguments.length?this.then.apply(this,arguments):this;c.then(null,function(a){setTimeout(function(){throw a},0)})})},{}],97:[function(a,b,c){a("asap");"undefined"==typeof Promise&&(Promise=a("./lib/core.js"),a("./lib/es6-extensions.js")),a("./polyfill-done.js")},{"./lib/core.js":94,"./lib/es6-extensions.js":95,"./polyfill-done.js":96,asap:92}]},{},[2])(2)});
\ No newline at end of file
+!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,b.less=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(a,b){d(b,e.currentScript(a)),void 0===b.isFileProtocol&&(b.isFileProtocol=/^(file|(chrome|safari)(-extension)?|resource|qrc|app):/.test(a.location.protocol)),b.async=b.async||!1,b.fileAsync=b.fileAsync||!1,b.poll=b.poll||(b.isFileProtocol?1e3:1500),b.env=b.env||("127.0.0.1"==a.location.hostname||"0.0.0.0"==a.location.hostname||"localhost"==a.location.hostname||a.location.port&&a.location.port.length>0||b.isFileProtocol?"development":"production");var c=/!dumpLineNumbers:(comments|mediaquery|all)/.exec(a.location.hash);c&&(b.dumpLineNumbers=c[1]),void 0===b.useFileCache&&(b.useFileCache=!0),void 0===b.onReady&&(b.onReady=!0),b.javascriptEnabled=!(!b.javascriptEnabled&&!b.inlineJavaScript)}},{"./browser":3,"./utils":11}],2:[function(a,b,c){function d(a){a.filename&&console.warn(a),e.async||h.removeChild(i)}a("promise/polyfill");var e=a("../less/default-options")();if(window.less)for(key in window.less)window.less.hasOwnProperty(key)&&(e[key]=window.less[key]);a("./add-default-options")(window,e),e.plugins=e.plugins||[],window.LESS_PLUGINS&&(e.plugins=e.plugins.concat(window.LESS_PLUGINS));var f=b.exports=a("./index")(window,e);window.less=f;var g,h,i;e.onReady&&(/!watch/.test(window.location.hash)&&f.watch(),e.async||(g="body { display: none !important }",h=document.head||document.getElementsByTagName("head")[0],i=document.createElement("style"),i.type="text/css",i.styleSheet?i.styleSheet.cssText=g:i.appendChild(document.createTextNode(g)),h.appendChild(i)),f.registerStylesheetsImmediately(),f.pageLoadFinished=f.refresh("development"===f.env).then(d,d))},{"../less/default-options":16,"./add-default-options":1,"./index":8,"promise/polyfill":100}],3:[function(a,b,c){var d=a("./utils");b.exports={createCSS:function(a,b,c){var e=c.href||"",f="less:"+(c.title||d.extractId(e)),g=a.getElementById(f),h=!1,i=a.createElement("style");i.setAttribute("type","text/css"),c.media&&i.setAttribute("media",c.media),i.id=f,i.styleSheet||(i.appendChild(a.createTextNode(b)),h=null!==g&&g.childNodes.length>0&&i.childNodes.length>0&&g.firstChild.nodeValue===i.firstChild.nodeValue);var j=a.getElementsByTagName("head")[0];if(null===g||h===!1){var k=c&&c.nextSibling||null;k?k.parentNode.insertBefore(i,k):j.appendChild(i)}if(g&&h===!1&&g.parentNode.removeChild(g),i.styleSheet)try{i.styleSheet.cssText=b}catch(l){throw new Error("Couldn't reassign styleSheet.cssText.")}},currentScript:function(a){var b=a.document;return b.currentScript||function(){var a=b.getElementsByTagName("script");return a[a.length-1]}()}}},{"./utils":11}],4:[function(a,b,c){b.exports=function(a,b,c){var d=null;if("development"!==b.env)try{d="undefined"==typeof a.localStorage?null:a.localStorage}catch(e){}return{setCSS:function(a,b,e,f){if(d){c.info("saving "+a+" to cache.");try{d.setItem(a,f),d.setItem(a+":timestamp",b),e&&d.setItem(a+":vars",JSON.stringify(e))}catch(g){c.error('failed to save "'+a+'" to local storage for caching.')}}},getCSS:function(a,b,c){var e=d&&d.getItem(a),f=d&&d.getItem(a+":timestamp"),g=d&&d.getItem(a+":vars");if(c=c||{},f&&b.lastModified&&new Date(b.lastModified).valueOf()===new Date(f).valueOf()&&(!c&&!g||JSON.stringify(c)===g))return e}}}},{}],5:[function(a,b,c){var d=a("./utils"),e=a("./browser");b.exports=function(a,b,c){function f(b,f){var g,h,i="less-error-message:"+d.extractId(f||""),j='<li><label>{line}</label><pre class="{class}">{content}</pre></li>',k=a.document.createElement("div"),l=[],m=b.filename||f,n=m.match(/([^\/]+(\?.*)?)$/)[1];k.id=i,k.className="less-error-message",h="<h3>"+(b.type||"Syntax")+"Error: "+(b.message||"There is an error in your .less file")+'</h3><p>in <a href="'+m+'">'+n+"</a> ";var o=function(a,b,c){void 0!==a.extract[b]&&l.push(j.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};b.line&&(o(b,0,""),o(b,1,"line"),o(b,2,""),h+="on line "+b.line+", column "+(b.column+1)+":</p><ul>"+l.join("")+"</ul>"),b.stack&&(b.extract||c.logLevel>=4)&&(h+="<br/>Stack Trace</br />"+b.stack.split("\n").slice(1).join("<br/>")),k.innerHTML=h,e.createCSS(a.document,[".less-error-message ul, .less-error-message li {","list-style-type: none;","margin-right: 15px;","padding: 4px 0;","margin: 0;","}",".less-error-message label {","font-size: 12px;","margin-right: 15px;","padding: 4px 0;","color: #cc7777;","}",".less-error-message pre {","color: #dd6666;","padding: 4px 0;","margin: 0;","display: inline-block;","}",".less-error-message pre.line {","color: #ff0000;","}",".less-error-message h3 {","font-size: 20px;","font-weight: bold;","padding: 15px 0 5px 0;","margin: 0;","}",".less-error-message a {","color: #10a","}",".less-error-message .error {","color: red;","font-weight: bold;","padding-bottom: 2px;","border-bottom: 1px dashed red;","}"].join("\n"),{title:"error-message"}),k.style.cssText=["font-family: Arial, sans-serif","border: 1px solid #e00","background-color: #eee","border-radius: 5px","-webkit-border-radius: 5px","-moz-border-radius: 5px","color: #e00","padding: 15px","margin-bottom: 15px"].join(";"),"development"===c.env&&(g=setInterval(function(){var b=a.document,c=b.body;c&&(b.getElementById(i)?c.replaceChild(k,b.getElementById(i)):c.insertBefore(k,c.firstChild),clearInterval(g))},10))}function g(b){var c=a.document.getElementById("less-error-message:"+d.extractId(b));c&&c.parentNode.removeChild(c)}function h(a){}function i(a){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?h(a):"function"==typeof c.errorReporting&&c.errorReporting("remove",a):g(a)}function j(a,d){var e="{line} {content}",f=a.filename||d,g=[],h=(a.type||"Syntax")+"Error: "+(a.message||"There is an error in your .less file")+" in "+f,i=function(a,b,c){void 0!==a.extract[b]&&g.push(e.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};a.line&&(i(a,0,""),i(a,1,"line"),i(a,2,""),h+=" on line "+a.line+", column "+(a.column+1)+":\n"+g.join("\n")),a.stack&&(a.extract||c.logLevel>=4)&&(h+="\nStack Trace\n"+a.stack),b.logger.error(h)}function k(a,b){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?j(a,b):"function"==typeof c.errorReporting&&c.errorReporting("add",a,b):f(a,b)}return{add:k,remove:i}}},{"./browser":3,"./utils":11}],6:[function(a,b,c){b.exports=function(b,c){var d=a("../less/environment/abstract-file-manager.js"),e={},f=function(){};return f.prototype=new d,f.prototype.alwaysMakePathsAbsolute=function(){return!0},f.prototype.join=function(a,b){return a?this.extractUrlParts(b,a).path:b},f.prototype.doXHR=function(a,d,e,f){function g(b,c,d){b.status>=200&&b.status<300?c(b.responseText,b.getResponseHeader("Last-Modified")):"function"==typeof d&&d(b.status,a)}var h=new XMLHttpRequest,i=!b.isFileProtocol||b.fileAsync;"function"==typeof h.overrideMimeType&&h.overrideMimeType("text/css"),c.debug("XHR: Getting '"+a+"'"),h.open("GET",a,i),h.setRequestHeader("Accept",d||"text/x-less, text/css; q=0.9, */*; q=0.5"),h.send(null),b.isFileProtocol&&!b.fileAsync?0===h.status||h.status>=200&&h.status<300?e(h.responseText):f(h.status,a):i?h.onreadystatechange=function(){4==h.readyState&&g(h,e,f)}:g(h,e,f)},f.prototype.supports=function(a,b,c,d){return!0},f.prototype.clearFileCache=function(){e={}},f.prototype.loadFile=function(a,b,c,d){b&&!this.isPathAbsolute(a)&&(a=b+a),a=c.ext?this.tryAppendExtension(a,c.ext):a,c=c||{};var f=this.extractUrlParts(a,window.location.href),g=f.url,h=this;return new Promise(function(a,b){if(c.useFileCache&&e[g])try{var d=e[g];return a({contents:d,filename:g,webInfo:{lastModified:new Date}})}catch(f){return b({filename:g,message:"Error loading file "+g+" error was "+f.message})}h.doXHR(g,c.mime,function(b,c){e[g]=b,a({contents:b,filename:g,webInfo:{lastModified:c}})},function(a,c){b({type:"File",message:"'"+c+"' wasn't found ("+a+")",href:g})})})},f}},{"../less/environment/abstract-file-manager.js":17}],7:[function(a,b,c){b.exports=function(){function b(){throw{type:"Runtime",message:"Image size functions are not supported in browser version of less"}}var c=a("./../less/functions/function-registry"),d={"image-size":function(a){return b(this,a),-1},"image-width":function(a){return b(this,a),-1},"image-height":function(a){return b(this,a),-1}};c.addMultiple(d)}},{"./../less/functions/function-registry":26}],8:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(b,c){function f(a){return JSON.parse(JSON.stringify(a||{}))}function g(a,b){var c=Array.prototype.slice.call(arguments,2);return function(){var d=c.concat(Array.prototype.slice.call(arguments,0));return a.apply(b,d)}}function h(a){for(var b,d=l.getElementsByTagName("style"),e=0;e<d.length;e++)if(b=d[e],b.type.match(s)){var h=f(c);h.modifyVars=a;var i=b.innerHTML||"";h.filename=l.location.href.replace(/#.*$/,""),m.render(i,h,g(function(a,b,c){b?q.add(b,"inline"):(a.type="text/css",a.styleSheet?a.styleSheet.cssText=c.css:a.innerHTML=c.css)},null,b))}}function i(a,b,e,g,h){function i(c){var d=c.contents,f=c.filename,h=c.webInfo,i={currentDirectory:p.getPath(f),filename:f,rootFilename:f,relativeUrls:j.relativeUrls};if(i.entryPath=i.currentDirectory,i.rootpath=j.rootpath||i.currentDirectory,h){h.remaining=g;var k=r.getCSS(f,h,j.modifyVars);if(!e&&k)return h.local=!0,void b(null,k,d,a,h,f)}q.remove(f),j.rootFileInfo=i,m.render(d,j,function(c,e){c?(c.href=f,b(c)):(r.setCSS(a.href,h.lastModified,j.modifyVars,e.css),b(null,e.css,d,a,h,f))})}var j=f(c);d(j,a),j.mime=a.type,h&&(j.modifyVars=h),p.loadFile(a.href,null,j,n).then(function(a){i(a)})["catch"](function(a){console.log(a),b(a)})}function j(a,b,c){for(var d=0;d<m.sheets.length;d++)i(m.sheets[d],a,b,m.sheets.length-(d+1),c)}function k(){"development"===m.env&&(m.watchTimer=setInterval(function(){m.watchMode&&(p.clearFileCache(),j(function(a,c,d,f,g){a?q.add(a,a.href||f.href):c&&e.createCSS(b.document,c,f)}))},c.poll))}var l=b.document,m=a("../less")();m.options=c;var n=m.environment,o=a("./file-manager")(c,m.logger),p=new o;n.addFileManager(p),m.FileManager=o,m.PluginLoader=a("./plugin-loader"),a("./log-listener")(m,c);var q=a("./error-reporting")(b,m,c),r=m.cache=c.cache||a("./cache")(b,c,m.logger);a("./image-size")(m.environment),c.functions&&m.functions.functionRegistry.addMultiple(c.functions);var s=/^text\/(x-)?less$/;return m.watch=function(){return m.watchMode||(m.env="development",k()),this.watchMode=!0,!0},m.unwatch=function(){return clearInterval(m.watchTimer),this.watchMode=!1,!1},m.registerStylesheetsImmediately=function(){var a=l.getElementsByTagName("link");m.sheets=[];for(var b=0;b<a.length;b++)("stylesheet/less"===a[b].rel||a[b].rel.match(/stylesheet/)&&a[b].type.match(s))&&m.sheets.push(a[b])},m.registerStylesheets=function(){return new Promise(function(a,b){m.registerStylesheetsImmediately(),a()})},m.modifyVars=function(a){return m.refresh(!0,a,!1)},m.refresh=function(a,c,d){return(a||d)&&d!==!1&&p.clearFileCache(),new Promise(function(d,f){var g,i,k,l;g=i=new Date,l=m.sheets.length,0===l?(i=new Date,k=i-g,m.logger.info("Less has finished and no sheets were loaded."),d({startTime:g,endTime:i,totalMilliseconds:k,sheets:m.sheets.length})):j(function(a,c,h,j,n){return a?(q.add(a,a.href||j.href),void f(a)):(m.logger.info(n.local?"Loading "+j.href+" from cache.":"Rendered "+j.href+" successfully."),e.createCSS(b.document,c,j),m.logger.info("CSS for "+j.href+" generated in "+(new Date-i)+"ms"),l--,0===l&&(k=new Date-g,m.logger.info("Less has finished. CSS generated in "+k+"ms"),d({startTime:g,endTime:i,totalMilliseconds:k,sheets:m.sheets.length})),void(i=new Date))},a,c),h(c)})},m.refreshStyles=h,m}},{"../less":35,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],9:[function(a,b,c){b.exports=function(a,b){var c=4,d=3,e=2,f=1;b.logLevel="undefined"!=typeof b.logLevel?b.logLevel:"development"===b.env?d:f,b.loggers||(b.loggers=[{debug:function(a){b.logLevel>=c&&console.log(a)},info:function(a){b.logLevel>=d&&console.log(a)},warn:function(a){b.logLevel>=e&&console.warn(a)},error:function(a){b.logLevel>=f&&console.error(a)}}]);for(var g=0;g<b.loggers.length;g++)a.logger.addListener(b.loggers[g])}},{}],10:[function(a,b,c){var d=a("../less/environment/abstract-plugin-loader.js"),e=function(b){this.less=b,this.require=a};e.prototype=new d,e.prototype.loadPlugin=function(a,b,c,d,e){return new Promise(function(f,g){e.loadFile(a,b,c,d).then(f)["catch"](g)})},b.exports=e},{"../less/environment/abstract-plugin-loader.js":18}],11:[function(a,b,c){b.exports={extractId:function(a){return a.replace(/^[a-z-]+:\/+?[^\/]+/,"").replace(/[\?\&]livereload=\w+/,"").replace(/^\//,"").replace(/\.[a-zA-Z]+$/,"").replace(/[^\.\w-]+/g,"-").replace(/\./g,":")},addDataAttr:function(a,b){for(var c in b.dataset)if(b.dataset.hasOwnProperty(c))if("env"===c||"dumpLineNumbers"===c||"rootpath"===c||"errorReporting"===c)a[c]=b.dataset[c];else try{a[c]=JSON.parse(b.dataset[c])}catch(d){}}}},{}],12:[function(a,b,c){var d={};b.exports=d;var e=function(a,b,c){if(a)for(var d=0;d<c.length;d++)a.hasOwnProperty(c[d])&&(b[c[d]]=a[c[d]])},f=["paths","relativeUrls","rootpath","strictImports","insecure","dumpLineNumbers","compress","syncImport","chunkInput","mime","useFileCache","processImports","pluginManager"];d.Parse=function(a){e(a,this,f),"string"==typeof this.paths&&(this.paths=[this.paths])};var g=["paths","compress","ieCompat","strictMath","strictUnits","sourceMap","importMultiple","urlArgs","javascriptEnabled","pluginManager","importantScope"];d.Eval=function(a,b){e(a,this,g),"string"==typeof this.paths&&(this.paths=[this.paths]),this.frames=b||[],this.importantScope=this.importantScope||[]},d.Eval.prototype.inParenthesis=function(){this.parensStack||(this.parensStack=[]),this.parensStack.push(!0)},d.Eval.prototype.outOfParenthesis=function(){this.parensStack.pop()},d.Eval.prototype.mathOn=!0,d.Eval.prototype.isMathOn=function(){return!!this.mathOn&&(!this.strictMath||this.parensStack&&this.parensStack.length)},d.Eval.prototype.isPathRelative=function(a){return!/^(?:[a-z-]+:|\/|#)/i.test(a)},d.Eval.prototype.normalizePath=function(a){var b,c=a.split("/").reverse();for(a=[];0!==c.length;)switch(b=c.pop()){case".":break;case"..":0===a.length||".."===a[a.length-1]?a.push(b):a.pop();break;default:a.push(b)}return a.join("/")}},{}],13:[function(a,b,c){b.exports={aliceblue:"#f0f8ff",antiquewhite:"#faebd7",aqua:"#00ffff",aquamarine:"#7fffd4",azure:"#f0ffff",beige:"#f5f5dc",bisque:"#ffe4c4",black:"#000000",blanchedalmond:"#ffebcd",blue:"#0000ff",blueviolet:"#8a2be2",brown:"#a52a2a",burlywood:"#deb887",cadetblue:"#5f9ea0",chartreuse:"#7fff00",chocolate:"#d2691e",coral:"#ff7f50",cornflowerblue:"#6495ed",cornsilk:"#fff8dc",crimson:"#dc143c",cyan:"#00ffff",darkblue:"#00008b",darkcyan:"#008b8b",darkgoldenrod:"#b8860b",darkgray:"#a9a9a9",darkgrey:"#a9a9a9",darkgreen:"#006400",darkkhaki:"#bdb76b",darkmagenta:"#8b008b",darkolivegreen:"#556b2f",darkorange:"#ff8c00",darkorchid:"#9932cc",darkred:"#8b0000",darksalmon:"#e9967a",darkseagreen:"#8fbc8f",darkslateblue:"#483d8b",darkslategray:"#2f4f4f",darkslategrey:"#2f4f4f",darkturquoise:"#00ced1",darkviolet:"#9400d3",deeppink:"#ff1493",deepskyblue:"#00bfff",dimgray:"#696969",dimgrey:"#696969",dodgerblue:"#1e90ff",firebrick:"#b22222",floralwhite:"#fffaf0",forestgreen:"#228b22",fuchsia:"#ff00ff",gainsboro:"#dcdcdc",ghostwhite:"#f8f8ff",gold:"#ffd700",goldenrod:"#daa520",gray:"#808080",grey:"#808080",green:"#008000",greenyellow:"#adff2f",honeydew:"#f0fff0",hotpink:"#ff69b4",indianred:"#cd5c5c",indigo:"#4b0082",ivory:"#fffff0",khaki:"#f0e68c",lavender:"#e6e6fa",lavenderblush:"#fff0f5",lawngreen:"#7cfc00",lemonchiffon:"#fffacd",lightblue:"#add8e6",lightcoral:"#f08080",lightcyan:"#e0ffff",lightgoldenrodyellow:"#fafad2",lightgray:"#d3d3d3",lightgrey:"#d3d3d3",lightgreen:"#90ee90",lightpink:"#ffb6c1",lightsalmon:"#ffa07a",lightseagreen:"#20b2aa",lightskyblue:"#87cefa",lightslategray:"#778899",lightslategrey:"#778899",lightsteelblue:"#b0c4de",lightyellow:"#ffffe0",lime:"#00ff00",limegreen:"#32cd32",linen:"#faf0e6",magenta:"#ff00ff",maroon:"#800000",mediumaquamarine:"#66cdaa",mediumblue:"#0000cd",mediumorchid:"#ba55d3",mediumpurple:"#9370d8",mediumseagreen:"#3cb371",mediumslateblue:"#7b68ee",mediumspringgreen:"#00fa9a",mediumturquoise:"#48d1cc",mediumvioletred:"#c71585",midnightblue:"#191970",mintcream:"#f5fffa",mistyrose:"#ffe4e1",moccasin:"#ffe4b5",navajowhite:"#ffdead",navy:"#000080",oldlace:"#fdf5e6",olive:"#808000",olivedrab:"#6b8e23",orange:"#ffa500",orangered:"#ff4500",orchid:"#da70d6",palegoldenrod:"#eee8aa",palegreen:"#98fb98",paleturquoise:"#afeeee",palevioletred:"#d87093",papayawhip:"#ffefd5",peachpuff:"#ffdab9",peru:"#cd853f",pink:"#ffc0cb",plum:"#dda0dd",powderblue:"#b0e0e6",purple:"#800080",rebeccapurple:"#663399",red:"#ff0000",rosybrown:"#bc8f8f",royalblue:"#4169e1",saddlebrown:"#8b4513",salmon:"#fa8072",sandybrown:"#f4a460",seagreen:"#2e8b57",seashell:"#fff5ee",sienna:"#a0522d",silver:"#c0c0c0",skyblue:"#87ceeb",slateblue:"#6a5acd",slategray:"#708090",slategrey:"#708090",snow:"#fffafa",springgreen:"#00ff7f",steelblue:"#4682b4",tan:"#d2b48c",teal:"#008080",thistle:"#d8bfd8",tomato:"#ff6347",turquoise:"#40e0d0",violet:"#ee82ee",wheat:"#f5deb3",white:"#ffffff",whitesmoke:"#f5f5f5",yellow:"#ffff00",yellowgreen:"#9acd32"}},{}],14:[function(a,b,c){b.exports={colors:a("./colors"),unitConversions:a("./unit-conversions")}},{"./colors":13,"./unit-conversions":15}],15:[function(a,b,c){b.exports={length:{m:1,cm:.01,mm:.001,"in":.0254,px:.0254/96,pt:.0254/72,pc:.0254/72*12},duration:{s:1,ms:.001},angle:{rad:1/(2*Math.PI),deg:1/360,grad:.0025,turn:1}}},{}],16:[function(a,b,c){b.exports=function(){return{depends:!1,compress:!1,lint:!1,paths:[],color:!0,strictImports:!1,insecure:!1,rootpath:"",relativeUrls:!1,ieCompat:!1,strictMath:!1,strictUnits:!1,globalVars:null,modifyVars:null,urlArgs:""}}},{}],17:[function(a,b,c){var d=function(){};d.prototype.getPath=function(a){var b=a.lastIndexOf("?");return b>0&&(a=a.slice(0,b)),b=a.lastIndexOf("/"),b<0&&(b=a.lastIndexOf("\\")),b<0?"":a.slice(0,b+1)},d.prototype.tryAppendExtension=function(a,b){return/(\.[a-z]*$)|([\?;].*)$/.test(a)?a:a+b},d.prototype.tryAppendLessExtension=function(a){return this.tryAppendExtension(a,".less")},d.prototype.supportsSync=function(){return!1},d.prototype.alwaysMakePathsAbsolute=function(){return!1},d.prototype.isPathAbsolute=function(a){return/^(?:[a-z-]+:|\/|\\|#)/i.test(a)},d.prototype.join=function(a,b){return a?a+b:b},d.prototype.pathDiff=function(a,b){var c,d,e,f,g=this.extractUrlParts(a),h=this.extractUrlParts(b),i="";if(g.hostPart!==h.hostPart)return"";for(d=Math.max(h.directories.length,g.directories.length),c=0;c<d&&h.directories[c]===g.directories[c];c++);for(f=h.directories.slice(c),e=g.directories.slice(c),c=0;c<f.length-1;c++)i+="../";for(c=0;c<e.length-1;c++)i+=e[c]+"/";return i},d.prototype.extractUrlParts=function(a,b){var c,d,e=/^((?:[a-z-]+:)?\/{2}(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i,f=a.match(e),g={},h=[],i=[];if(!f)throw new Error("Could not parse sheet href - '"+a+"'");if(b&&(!f[1]||f[2])){if(d=b.match(e),!d)throw new Error("Could not parse page url - '"+b+"'");f[1]=f[1]||d[1]||"",f[2]||(f[3]=d[3]+f[3])}if(f[3])for(h=f[3].replace(/\\/g,"/").split("/"),c=0;c<h.length;c++)".."===h[c]?i.pop():"."!==h[c]&&i.push(h[c]);return g.hostPart=f[1],g.directories=i,g.rawPath=(f[1]||"")+h.join("/"),g.path=(f[1]||"")+i.join("/"),g.filename=f[4],g.fileUrl=g.path+(f[4]||""),g.url=g.fileUrl+(f[5]||""),g},b.exports=d},{}],18:[function(a,b,c){function d(a,b){throw new f({type:b||"Syntax",message:a})}var e=a("../functions/function-registry"),f=a("../less-error"),g=function(){};g.prototype.evalPlugin=function(a,b,c,d,f){var g,h,i,j,k,l;k=b.pluginManager,f&&(l="string"==typeof f?f:f.filename);var m=(new this.less.FileManager).extractUrlParts(l).filename;if(l&&(i=k.get(l))){this.trySetOptions(i,l,m,d);try{i.use&&i.use.call(this.context,i)}catch(n){return n.message="Error during @plugin call",new this.less.LessError(n,c,l)}return i}j={exports:{},pluginManager:k,fileInfo:f},h=e.create();var o=function(a){i=a};try{g=new Function("module","require","registerPlugin","functions","tree","less","fileInfo",a),g(j,this.require,o,h,this.less.tree,this.less,f)}catch(n){return new this.less.LessError(n,c,l)}if(i||(i=j.exports),i=this.validatePlugin(i,l,m),!i)return new this.less.LessError({message:"Not a valid plugin"});k.addPlugin(i,f.filename,h),i.functions=h.getLocalFunctions(),i.imports=c,i.filename=l,this.trySetOptions(i,l,m,d);try{i.use&&i.use.call(this.context,i)}catch(n){return n.message="Error during @plugin call",new this.less.LessError(n,c,l)}return i},g.prototype.trySetOptions=function(a,b,c,e){if(e){if(!a.setOptions)return d("Options have been provided but the plugin "+c+" does not support any options."),null;try{a.setOptions(e)}catch(f){return d("Error setting options on plugin "+c+"\n"+f.message),null}}},g.prototype.validatePlugin=function(a,b,c){return a?("function"==typeof a&&(a=new a),a.minVersion&&this.compareVersion(a.minVersion,this.less.version)<0?(d("Plugin "+c+" requires version "+this.versionToString(a.minVersion)),null):a):null},g.prototype.compareVersion=function(a,b){"string"==typeof a&&(a=a.match(/^(\d+)\.?(\d+)?\.?(\d+)?/),a.shift());for(var c=0;c<a.length;c++)if(a[c]!==b[c])return parseInt(a[c])>parseInt(b[c])?-1:1;return 0},g.prototype.versionToString=function(a){for(var b="",c=0;c<a.length;c++)b+=(b?".":"")+a[c];return b},g.prototype.printUsage=function(a){for(var b=0;b<a.length;b++){var c=a[b];c.printUsage&&c.printUsage()}},b.exports=g},{"../functions/function-registry":26,"../less-error":36}],19:[function(a,b,c){var d=a("../logger"),e=function(a,b){this.fileManagers=b||[],a=a||{};for(var c=["encodeBase64","mimeLookup","charsetLookup","getSourceMapGenerator"],d=[],e=d.concat(c),f=0;f<e.length;f++){var g=e[f],h=a[g];h?this[g]=h.bind(a):f<d.length&&this.warn("missing required function in environment - "+g)}};e.prototype.getFileManager=function(a,b,c,e,f){a||d.warn("getFileManager called with no filename.. Please report this issue. continuing."),null==b&&d.warn("getFileManager called with null directory.. Please report this issue. continuing.");var g=this.fileManagers;c.pluginManager&&(g=[].concat(g).concat(c.pluginManager.getFileManagers()));for(var h=g.length-1;h>=0;h--){var i=g[h];if(i[f?"supportsSync":"supports"](a,b,c,e))return i}return null},e.prototype.addFileManager=function(a){this.fileManagers.push(a)},e.prototype.clearFileManagers=function(){this.fileManagers=[]},b.exports=e},{"../logger":37}],20:[function(a,b,c){var d=a("./function-registry"),e=a("../tree/anonymous"),f=a("../tree/keyword");d.addMultiple({"boolean":function(a){return a?f.True:f.False},"if":function(a,b,c){return a?b:c||new e}})},{"../tree/anonymous":48,"../tree/keyword":68,"./function-registry":26}],21:[function(a,b,c){function d(a,b,c){var d,f,g,h,i=b.alpha,j=c.alpha,k=[];g=j+i*(1-j);for(var l=0;l<3;l++)d=b.rgb[l]/255,f=c.rgb[l]/255,h=a(d,f),g&&(h=(j*f+i*(d-j*(d+f-h)))/g),k[l]=255*h;return new e(k,g)}var e=a("../tree/color"),f=a("./function-registry"),g={multiply:function(a,b){return a*b},screen:function(a,b){return a+b-a*b},overlay:function(a,b){return a*=2,a<=1?g.multiply(a,b):g.screen(a-1,b)},softlight:function(a,b){var c=1,d=a;return b>.5&&(d=1,c=a>.25?Math.sqrt(a):((16*a-12)*a+4)*a),a-(1-2*b)*d*(c-a)},hardlight:function(a,b){return g.overlay(b,a)},difference:function(a,b){return Math.abs(a-b)},exclusion:function(a,b){return a+b-2*a*b},average:function(a,b){return(a+b)/2},negation:function(a,b){return 1-Math.abs(a+b-1)}};for(var h in g)g.hasOwnProperty(h)&&(d[h]=d.bind(null,g[h]));f.addMultiple(d)},{"../tree/color":53,"./function-registry":26}],22:[function(a,b,c){function d(a){return Math.min(1,Math.max(0,a))}function e(a){return h.hsla(a.h,a.s,a.l,a.a)}function f(a){if(a instanceof i)return parseFloat(a.unit.is("%")?a.value/100:a.value);if("number"==typeof a)return a;throw{type:"Argument",message:"color functions take numbers as parameters"}}function g(a,b){return a instanceof i&&a.unit.is("%")?parseFloat(a.value*b/100):f(a)}var h,i=a("../tree/dimension"),j=a("../tree/color"),k=a("../tree/quoted"),l=a("../tree/anonymous"),m=a("./function-registry");h={rgb:function(a,b,c){return h.rgba(a,b,c,1)},rgba:function(a,b,c,d){var e=[a,b,c].map(function(a){return g(a,255)});return d=f(d),new j(e,d)},hsl:function(a,b,c){return h.hsla(a,b,c,1)},hsla:function(a,b,c,e){function g(a){return a=a<0?a+1:a>1?a-1:a,6*a<1?i+(j-i)*a*6:2*a<1?j:3*a<2?i+(j-i)*(2/3-a)*6:i}var i,j;return a=f(a)%360/360,b=d(f(b)),c=d(f(c)),e=d(f(e)),j=c<=.5?c*(b+1):c+b-c*b,i=2*c-j,h.rgba(255*g(a+1/3),255*g(a),255*g(a-1/3),e)},hsv:function(a,b,c){return h.hsva(a,b,c,1)},hsva:function(a,b,c,d){a=f(a)%360/360*360,b=f(b),c=f(c),d=f(d);var e,g;e=Math.floor(a/60%6),g=a/60-e;var i=[c,c*(1-b),c*(1-g*b),c*(1-(1-g)*b)],j=[[0,3,1],[2,0,1],[1,0,3],[1,2,0],[3,1,0],[0,1,2]];return h.rgba(255*i[j[e][0]],255*i[j[e][1]],255*i[j[e][2]],d)},hue:function(a){return new i(a.toHSL().h)},saturation:function(a){return new i(100*a.toHSL().s,"%")},lightness:function(a){return new i(100*a.toHSL().l,"%")},hsvhue:function(a){return new i(a.toHSV().h)},hsvsaturation:function(a){return new i(100*a.toHSV().s,"%")},hsvvalue:function(a){return new i(100*a.toHSV().v,"%")},red:function(a){return new i(a.rgb[0])},green:function(a){return new i(a.rgb[1])},blue:function(a){return new i(a.rgb[2])},alpha:function(a){return new i(a.toHSL().a)},luma:function(a){return new i(a.luma()*a.alpha*100,"%")},luminance:function(a){var b=.2126*a.rgb[0]/255+.7152*a.rgb[1]/255+.0722*a.rgb[2]/255;return new i(b*a.alpha*100,"%")},saturate:function(a,b,c){if(!a.rgb)return null;var f=a.toHSL();return f.s+="undefined"!=typeof c&&"relative"===c.value?f.s*b.value/100:b.value/100,f.s=d(f.s),e(f)},desaturate:function(a,b,c){var f=a.toHSL();return f.s-="undefined"!=typeof c&&"relative"===c.value?f.s*b.value/100:b.value/100,f.s=d(f.s),e(f)},lighten:function(a,b,c){var f=a.toHSL();return f.l+="undefined"!=typeof c&&"relative"===c.value?f.l*b.value/100:b.value/100,f.l=d(f.l),e(f)},darken:function(a,b,c){var f=a.toHSL();return f.l-="undefined"!=typeof c&&"relative"===c.value?f.l*b.value/100:b.value/100,f.l=d(f.l),e(f)},fadein:function(a,b,c){var f=a.toHSL();return f.a+="undefined"!=typeof c&&"relative"===c.value?f.a*b.value/100:b.value/100,f.a=d(f.a),e(f)},fadeout:function(a,b,c){var f=a.toHSL();return f.a-="undefined"!=typeof c&&"relative"===c.value?f.a*b.value/100:b.value/100,f.a=d(f.a),e(f)},fade:function(a,b){var c=a.toHSL();return c.a=b.value/100,c.a=d(c.a),e(c)},spin:function(a,b){var c=a.toHSL(),d=(c.h+b.value)%360;return c.h=d<0?360+d:d,e(c)},mix:function(a,b,c){a.toHSL&&b.toHSL||(console.log(b.type),console.dir(b)),c||(c=new i(50));var d=c.value/100,e=2*d-1,f=a.toHSL().a-b.toHSL().a,g=((e*f==-1?e:(e+f)/(1+e*f))+1)/2,h=1-g,k=[a.rgb[0]*g+b.rgb[0]*h,a.rgb[1]*g+b.rgb[1]*h,a.rgb[2]*g+b.rgb[2]*h],l=a.alpha*d+b.alpha*(1-d);return new j(k,l)},greyscale:function(a){return h.desaturate(a,new i(100))},contrast:function(a,b,c,d){if(!a.rgb)return null;if("undefined"==typeof c&&(c=h.rgba(255,255,255,1)),"undefined"==typeof b&&(b=h.rgba(0,0,0,1)),b.luma()>c.luma()){var e=c;c=b,b=e}return d="undefined"==typeof d?.43:f(d),a.luma()<d?c:b},argb:function(a){return new l(a.toARGB())},color:function(a){if(a instanceof k&&/^#([a-f0-9]{6}|[a-f0-9]{3})$/i.test(a.value))return new j(a.value.slice(1));if(a instanceof j||(a=j.fromKeyword(a.value)))return a.value=void 0,a;throw{type:"Argument",message:"argument must be a color keyword or 3/6 digit hex e.g. #FFF"}},tint:function(a,b){return h.mix(h.rgb(255,255,255),a,b)},shade:function(a,b){return h.mix(h.rgb(0,0,0),a,b)}},m.addMultiple(h)},{"../tree/anonymous":48,"../tree/color":53,"../tree/dimension":60,"../tree/quoted":77,"./function-registry":26}],23:[function(a,b,c){b.exports=function(b){var c=a("../tree/quoted"),d=a("../tree/url"),e=a("../utils"),f=a("./function-registry"),g=function(a,b){return new d(b,a.index,a.currentFileInfo).eval(a.context)},h=a("../logger");f.add("data-uri",function(a,f){f||(f=a,a=null);var i=a&&a.value,j=f.value,k=this.currentFileInfo,l=k.relativeUrls?k.currentDirectory:k.entryPath,m=j.indexOf("#"),n="";m!==-1&&(n=j.slice(m),j=j.slice(0,m));var o=e.clone(this.context);o.rawBuffer=!0;var p=b.getFileManager(j,l,o,b,!0);if(!p)return g(this,f);var q=!1;if(a)q=/;base64$/.test(i);else{if(i=b.mimeLookup(j),"image/svg+xml"===i)q=!1;else{var r=b.charsetLookup(i);q=["US-ASCII","UTF-8"].indexOf(r)<0}q&&(i+=";base64")}var s=p.loadFileSync(j,l,o,b);if(!s.contents)return h.warn("Skipped data-uri embedding of "+j+" because file not found"),g(this,f||a);var t=s.contents;if(q&&!b.encodeBase64)return g(this,f);t=q?b.encodeBase64(t):encodeURIComponent(t);var u="data:"+i+","+t+n,v=32768;return u.length>=v&&this.context.ieCompat!==!1?(h.warn("Skipped data-uri embedding of "+j+" because its size ("+u.length+" characters) exceeds IE8-safe "+v+" characters!"),g(this,f||a)):new d(new c('"'+u+'"',u,(!1),this.index,this.currentFileInfo),this.index,this.currentFileInfo)})}},{"../logger":37,"../tree/quoted":77,"../tree/url":82,"../utils":86,"./function-registry":26}],24:[function(a,b,c){var d=a("../tree/keyword"),e=a("./function-registry"),f={eval:function(){var a=this.value_,b=this.error_;if(b)throw b;if(null!=a)return a?d.True:d.False},value:function(a){this.value_=a},error:function(a){this.error_=a},reset:function(){this.value_=this.error_=null}};e.add("default",f.eval.bind(f)),b.exports=f},{"../tree/keyword":68,"./function-registry":26}],25:[function(a,b,c){var d=a("../tree/expression"),e=function(a,b,c,d){this.name=a.toLowerCase(),this.index=c,this.context=b,this.currentFileInfo=d,this.func=b.frames[0].functionRegistry.get(this.name)};e.prototype.isValid=function(){return Boolean(this.func)},e.prototype.call=function(a){return Array.isArray(a)&&(a=a.filter(function(a){return"Comment"!==a.type}).map(function(a){if("Expression"===a.type){var b=a.value.filter(function(a){return"Comment"!==a.type});return 1===b.length?b[0]:new d(b)}return a})),this.func.apply(this,a)},b.exports=e},{"../tree/expression":62}],26:[function(a,b,c){function d(a){return{_data:{},add:function(a,b){a=a.toLowerCase(),this._data.hasOwnProperty(a),this._data[a]=b},addMultiple:function(a){Object.keys(a).forEach(function(b){this.add(b,a[b])}.bind(this))},get:function(b){return this._data[b]||a&&a.get(b)},getLocalFunctions:function(){return this._data},inherit:function(){return d(this)},create:function(a){return d(a)}}}b.exports=d(null)},{}],27:[function(a,b,c){b.exports=function(b){var c={functionRegistry:a("./function-registry"),functionCaller:a("./function-caller")};return a("./boolean"),a("./default"),a("./color"),a("./color-blending"),a("./data-uri")(b),a("./math"),a("./number"),a("./string"),a("./svg")(b),a("./types"),c}},{"./boolean":20,"./color":22,"./color-blending":21,"./data-uri":23,"./default":24,"./function-caller":25,"./function-registry":26,"./math":29,"./number":30,"./string":31,"./svg":32,"./types":33}],28:[function(a,b,c){var d=a("../tree/dimension"),e=function(){};e._math=function(a,b,c){if(!(c instanceof d))throw{
+type:"Argument",message:"argument must be a number"};return null==b?b=c.unit:c=c.unify(),new d(a(parseFloat(c.value)),b)},b.exports=e},{"../tree/dimension":60}],29:[function(a,b,c){var d=a("./function-registry"),e=a("./math-helper.js"),f={ceil:null,floor:null,sqrt:null,abs:null,tan:"",sin:"",cos:"",atan:"rad",asin:"rad",acos:"rad"};for(var g in f)f.hasOwnProperty(g)&&(f[g]=e._math.bind(null,Math[g],f[g]));f.round=function(a,b){var c="undefined"==typeof b?0:b.value;return e._math(function(a){return a.toFixed(c)},null,a)},d.addMultiple(f)},{"./function-registry":26,"./math-helper.js":28}],30:[function(a,b,c){var d=a("../tree/dimension"),e=a("../tree/anonymous"),f=a("./function-registry"),g=a("./math-helper.js"),h=function(a,b){switch(b=Array.prototype.slice.call(b),b.length){case 0:throw{type:"Argument",message:"one or more arguments required"}}var c,f,g,h,i,j,k,l,m=[],n={};for(c=0;c<b.length;c++)if(g=b[c],g instanceof d)if(h=""===g.unit.toString()&&void 0!==l?new d(g.value,l).unify():g.unify(),j=""===h.unit.toString()&&void 0!==k?k:h.unit.toString(),k=""!==j&&void 0===k||""!==j&&""===m[0].unify().unit.toString()?j:k,l=""!==j&&void 0===l?g.unit.toString():l,f=void 0!==n[""]&&""!==j&&j===k?n[""]:n[j],void 0!==f)i=""===m[f].unit.toString()&&void 0!==l?new d(m[f].value,l).unify():m[f].unify(),(a&&h.value<i.value||!a&&h.value>i.value)&&(m[f]=g);else{if(void 0!==k&&j!==k)throw{type:"Argument",message:"incompatible types"};n[j]=m.length,m.push(g)}else Array.isArray(b[c].value)&&Array.prototype.push.apply(b,Array.prototype.slice.call(b[c].value));return 1==m.length?m[0]:(b=m.map(function(a){return a.toCSS(this.context)}).join(this.context.compress?",":", "),new e((a?"min":"max")+"("+b+")"))};f.addMultiple({min:function(){return h(!0,arguments)},max:function(){return h(!1,arguments)},convert:function(a,b){return a.convertTo(b.value)},pi:function(){return new d(Math.PI)},mod:function(a,b){return new d(a.value%b.value,a.unit)},pow:function(a,b){if("number"==typeof a&&"number"==typeof b)a=new d(a),b=new d(b);else if(!(a instanceof d&&b instanceof d))throw{type:"Argument",message:"arguments must be numbers"};return new d(Math.pow(a.value,b.value),a.unit)},percentage:function(a){var b=g._math(function(a){return 100*a},"%",a);return b}})},{"../tree/anonymous":48,"../tree/dimension":60,"./function-registry":26,"./math-helper.js":28}],31:[function(a,b,c){var d=a("../tree/quoted"),e=a("../tree/anonymous"),f=a("../tree/javascript"),g=a("./function-registry");g.addMultiple({e:function(a){return new e(a instanceof f?a.evaluated:a.value)},escape:function(a){return new e(encodeURI(a.value).replace(/=/g,"%3D").replace(/:/g,"%3A").replace(/#/g,"%23").replace(/;/g,"%3B").replace(/\(/g,"%28").replace(/\)/g,"%29"))},replace:function(a,b,c,e){var f=a.value;return c="Quoted"===c.type?c.value:c.toCSS(),f=f.replace(new RegExp(b.value,e?e.value:""),c),new d(a.quote||"",f,a.escaped)},"%":function(a){for(var b=Array.prototype.slice.call(arguments,1),c=a.value,e=0;e<b.length;e++)c=c.replace(/%[sda]/i,function(a){var c="Quoted"===b[e].type&&a.match(/s/i)?b[e].value:b[e].toCSS();return a.match(/[A-Z]$/)?encodeURIComponent(c):c});return c=c.replace(/%%/g,"%"),new d(a.quote||"",c,a.escaped)}})},{"../tree/anonymous":48,"../tree/javascript":66,"../tree/quoted":77,"./function-registry":26}],32:[function(a,b,c){b.exports=function(b){var c=a("../tree/dimension"),d=a("../tree/color"),e=a("../tree/expression"),f=a("../tree/quoted"),g=a("../tree/url"),h=a("./function-registry");h.add("svg-gradient",function(a){function b(){throw{type:"Argument",message:"svg-gradient expects direction, start_color [start_position], [color position,]..., end_color [end_position] or direction, color list"}}var h,i,j,k,l,m,n,o,p="linear",q='x="0" y="0" width="1" height="1"',r={compress:!1},s=a.toCSS(r);switch(2==arguments.length?(arguments[1].value.length<2&&b(),h=arguments[1].value):arguments.length<3?b():h=Array.prototype.slice.call(arguments,1),s){case"to bottom":i='x1="0%" y1="0%" x2="0%" y2="100%"';break;case"to right":i='x1="0%" y1="0%" x2="100%" y2="0%"';break;case"to bottom right":i='x1="0%" y1="0%" x2="100%" y2="100%"';break;case"to top right":i='x1="0%" y1="100%" x2="100%" y2="0%"';break;case"ellipse":case"ellipse at center":p="radial",i='cx="50%" cy="50%" r="75%"',q='x="-50" y="-50" width="101" height="101"';break;default:throw{type:"Argument",message:"svg-gradient direction must be 'to bottom', 'to right', 'to bottom right', 'to top right' or 'ellipse at center'"}}for(j='<?xml version="1.0" ?><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none"><'+p+'Gradient id="gradient" gradientUnits="userSpaceOnUse" '+i+">",k=0;k<h.length;k+=1)h[k]instanceof e?(l=h[k].value[0],m=h[k].value[1]):(l=h[k],m=void 0),l instanceof d&&((0===k||k+1===h.length)&&void 0===m||m instanceof c)||b(),n=m?m.toCSS(r):0===k?"0%":"100%",o=l.alpha,j+='<stop offset="'+n+'" stop-color="'+l.toRGB()+'"'+(o<1?' stop-opacity="'+o+'"':"")+"/>";return j+="</"+p+"Gradient><rect "+q+' fill="url(#gradient)" /></svg>',j=encodeURIComponent(j),j="data:image/svg+xml,"+j,new g(new f("'"+j+"'",j,(!1),this.index,this.currentFileInfo),this.index,this.currentFileInfo)})}},{"../tree/color":53,"../tree/dimension":60,"../tree/expression":62,"../tree/quoted":77,"../tree/url":82,"./function-registry":26}],33:[function(a,b,c){var d=a("../tree/keyword"),e=a("../tree/detached-ruleset"),f=a("../tree/dimension"),g=a("../tree/color"),h=a("../tree/quoted"),i=a("../tree/anonymous"),j=a("../tree/url"),k=a("../tree/operation"),l=a("./function-registry"),m=function(a,b){return a instanceof b?d.True:d.False},n=function(a,b){if(void 0===b)throw{type:"Argument",message:"missing the required second argument to isunit."};if(b="string"==typeof b.value?b.value:b,"string"!=typeof b)throw{type:"Argument",message:"Second argument to isunit should be a unit or a string."};return a instanceof f&&a.unit.is(b)?d.True:d.False},o=function(a){var b=Array.isArray(a.value)?a.value:Array(a);return b};l.addMultiple({isruleset:function(a){return m(a,e)},iscolor:function(a){return m(a,g)},isnumber:function(a){return m(a,f)},isstring:function(a){return m(a,h)},iskeyword:function(a){return m(a,d)},isurl:function(a){return m(a,j)},ispixel:function(a){return n(a,"px")},ispercentage:function(a){return n(a,"%")},isem:function(a){return n(a,"em")},isunit:n,unit:function(a,b){if(!(a instanceof f))throw{type:"Argument",message:"the first argument to unit must be a number"+(a instanceof k?". Have you forgotten parenthesis?":"")};return b=b?b instanceof d?b.value:b.toCSS():"",new f(a.value,b)},"get-unit":function(a){return new i(a.unit)},extract:function(a,b){return b=b.value-1,o(a)[b]},length:function(a){return new f(o(a).length)}})},{"../tree/anonymous":48,"../tree/color":53,"../tree/detached-ruleset":59,"../tree/dimension":60,"../tree/keyword":68,"../tree/operation":74,"../tree/quoted":77,"../tree/url":82,"./function-registry":26}],34:[function(a,b,c){var d=a("./contexts"),e=a("./parser/parser"),f=a("./less-error"),g=a("./utils");"undefined"==typeof Promise?a("promise"):Promise;b.exports=function(a){var b=function(a,b,c){this.less=a,this.rootFilename=c.filename,this.paths=b.paths||[],this.contents={},this.contentsIgnoredChars={},this.mime=b.mime,this.error=null,this.context=b,this.queue=[],this.files={}};return b.prototype.push=function(b,c,h,i,j){var k=this,l=this.context.pluginManager.Loader;this.queue.push(b);var m=function(a,c,d){k.queue.splice(k.queue.indexOf(b),1);var e=d===k.rootFilename;i.optional&&a?j(null,{rules:[]},!1,null):(k.files[d]||(k.files[d]={root:c,options:i}),a&&!k.error&&(k.error=a),j(a,c,e,d))},n={relativeUrls:this.context.relativeUrls,entryPath:h.entryPath,rootpath:h.rootpath,rootFilename:h.rootFilename},o=a.getFileManager(b,h.currentDirectory,this.context,a);if(!o)return void m({message:"Could not find a file-manager for "+b});var p,q=function(a){var b,c=a.filename,g=a.contents.replace(/^\uFEFF/,"");n.currentDirectory=o.getPath(c),n.relativeUrls&&(n.rootpath=o.join(k.context.rootpath||"",o.pathDiff(n.currentDirectory,n.entryPath)),!o.isPathAbsolute(n.rootpath)&&o.alwaysMakePathsAbsolute()&&(n.rootpath=o.join(n.entryPath,n.rootpath))),n.filename=c;var j=new d.Parse(k.context);j.processImports=!1,k.contents[c]=g,(h.reference||i.reference)&&(n.reference=!0),i.isPlugin?(b=l.evalPlugin(g,j,k,i.pluginArgs,n),b instanceof f?m(b,null,c):m(null,b,c)):i.inline?m(null,g,c):!k.files[c]||k.files[c].options.multiple||i.multiple?new e(j,k,n).parse(g,function(a,b){m(a,b,c)}):m(null,k.files[c].root,c)},r=g.clone(this.context);c&&(r.ext=i.isPlugin?".js":".less"),p=i.isPlugin?l.loadPlugin(b,h.currentDirectory,r,a,o):o.loadFile(b,h.currentDirectory,r,a,function(a,b){a?m(a):q(b)}),p&&p.then(q,m)},b}},{"./contexts":12,"./less-error":36,"./parser/parser":42,"./utils":86,promise:void 0}],35:[function(a,b,c){b.exports=function(b,c){var d,e,f,g,h,i,j={version:[3,0,0],data:a("./data"),tree:a("./tree"),Environment:h=a("./environment/environment"),AbstractFileManager:a("./environment/abstract-file-manager"),AbstractPluginLoader:a("./environment/abstract-plugin-loader"),environment:b=new h(b,c),visitors:a("./visitors"),Parser:a("./parser/parser"),functions:a("./functions")(b),contexts:a("./contexts"),SourceMapOutput:d=a("./source-map-output")(b),SourceMapBuilder:e=a("./source-map-builder")(d,b),ParseTree:f=a("./parse-tree")(e),ImportManager:g=a("./import-manager")(b),render:a("./render")(b,f,g),parse:a("./parse")(b,f,g),LessError:a("./less-error"),transformTree:a("./transform-tree"),utils:a("./utils"),PluginManager:a("./plugin-manager"),logger:a("./logger")},k=function(a){return function(){var b=Object.create(a.prototype);return a.apply(b,Array.prototype.slice.call(arguments,0)),b}},l=Object.create(j);for(var m in j.tree)if(i=j.tree[m],"function"==typeof i)l[m.toLowerCase()]=k(i);else{l[m]=Object.create(null);for(var n in i)l[m][n.toLowerCase()]=k(i[n])}return l}},{"./contexts":12,"./data":14,"./environment/abstract-file-manager":17,"./environment/abstract-plugin-loader":18,"./environment/environment":19,"./functions":27,"./import-manager":34,"./less-error":36,"./logger":37,"./parse":39,"./parse-tree":38,"./parser/parser":42,"./plugin-manager":43,"./render":44,"./source-map-builder":45,"./source-map-output":46,"./transform-tree":47,"./tree":65,"./utils":86,"./visitors":90}],36:[function(a,b,c){var d=a("./utils"),e=b.exports=function(a,b,c){Error.call(this);var e=a.filename||c;if(this.message=a.message,this.stack=a.stack,b&&e){var f=b.contents[e],g=d.getLocation(a.index,f),h=g.line,i=g.column,j=a.call&&d.getLocation(a.call,f).line,k=f.split("\n");if(this.type=a.type||"Syntax",this.filename=e,this.index=a.index,this.line="number"==typeof h?h+1:null,this.column=i,!this.line&&this.stack){var l=this.stack.match(/(<anonymous>|Function):(\d+):(\d+)/);l&&(l[2]&&(this.line=parseInt(l[2])-2),l[3]&&(this.column=parseInt(l[3])))}this.callLine=j+1,this.callExtract=k[j],this.extract=[k[this.line-2],k[this.line-1],k[this.line]]}};if("undefined"==typeof Object.create){var f=function(){};f.prototype=Error.prototype,e.prototype=new f}else e.prototype=Object.create(Error.prototype);e.prototype.constructor=e,e.prototype.toString=function(a){a=a||{};var b="",c=this.extract||[],d=[],e=function(a){return a};if(a.stylize){var f=typeof a.stylize;if("function"!==f)throw Error("options.stylize should be a function, got a "+f+"!");e=a.stylize}if(null!==this.line){if("string"==typeof c[0]&&d.push(e(this.line-1+" "+c[0],"grey")),"string"==typeof c[1]){var g=this.line+" ";c[1]&&(g+=c[1].slice(0,this.column)+e(e(e(c[1].substr(this.column,1),"bold")+c[1].slice(this.column+1),"red"),"inverse")),d.push(g)}"string"==typeof c[2]&&d.push(e(this.line+1+" "+c[2],"grey")),d=d.join("\n")+e("","reset")+"\n"}return b+=e(this.type+"Error: "+this.message,"red"),this.filename&&(b+=e(" in ","red")+this.filename),this.line&&(b+=e(" on line "+this.line+", column "+(this.column+1)+":","grey")),b+="\n"+d,this.callLine&&(b+=e("from ","red")+(this.filename||"")+"/n",b+=e(this.callLine,"grey")+" "+this.callExtract+"/n"),b}},{"./utils":86}],37:[function(a,b,c){b.exports={error:function(a){this._fireEvent("error",a)},warn:function(a){this._fireEvent("warn",a)},info:function(a){this._fireEvent("info",a)},debug:function(a){this._fireEvent("debug",a)},addListener:function(a){this._listeners.push(a)},removeListener:function(a){for(var b=0;b<this._listeners.length;b++)if(this._listeners[b]===a)return void this._listeners.splice(b,1)},_fireEvent:function(a,b){for(var c=0;c<this._listeners.length;c++){var d=this._listeners[c][a];d&&d(b)}},_listeners:[]}},{}],38:[function(a,b,c){var d=a("./less-error"),e=a("./transform-tree"),f=a("./logger");b.exports=function(a){var b=function(a,b){this.root=a,this.imports=b};return b.prototype.toCSS=function(b){var c,g,h={};try{c=e(this.root,b)}catch(i){throw new d(i,this.imports)}try{var j=Boolean(b.compress);j&&f.warn("The compress option has been deprecated. We recommend you use a dedicated css minifier, for instance see less-plugin-clean-css.");var k={compress:j,dumpLineNumbers:b.dumpLineNumbers,strictUnits:Boolean(b.strictUnits),numPrecision:8};b.sourceMap?(g=new a(b.sourceMap),h.css=g.toCSS(c,k,this.imports)):h.css=c.toCSS(k)}catch(i){throw new d(i,this.imports)}if(b.pluginManager)for(var l=b.pluginManager.getPostProcessors(),m=0;m<l.length;m++)h.css=l[m].process(h.css,{sourceMap:g,options:b,imports:this.imports});b.sourceMap&&(h.map=g.getExternalSourceMap()),h.imports=[];for(var n in this.imports.files)this.imports.files.hasOwnProperty(n)&&n!==this.imports.rootFilename&&h.imports.push(n);return h},b}},{"./less-error":36,"./logger":37,"./transform-tree":47}],39:[function(a,b,c){var d,e=a("./contexts"),f=a("./parser/parser"),g=a("./plugin-manager"),h=a("./less-error"),i=a("./utils");b.exports=function(b,c,j){var k=function(b,c,l){if("function"==typeof c?(l=c,c=i.defaults(this.options,{})):c=i.defaults(this.options,c||{}),!l){d||(d="undefined"==typeof Promise?a("promise"):Promise);var m=this;return new d(function(a,d){k.call(m,b,c,function(b,c){b?d(b):a(c)})})}var n,o,p=new g(this,(!0));if(c.pluginManager=p,n=new e.Parse(c),c.rootFileInfo)o=c.rootFileInfo;else{var q=c.filename||"input",r=q.replace(/[^\/\\]*$/,"");o={filename:q,relativeUrls:n.relativeUrls,rootpath:n.rootpath||"",currentDirectory:r,entryPath:r,rootFilename:q},o.rootpath&&"/"!==o.rootpath.slice(-1)&&(o.rootpath+="/")}var s=new j(this,n,o);this.importManager=s,c.plugins&&c.plugins.forEach(function(a){var b,c;if(a.fileContent){if(c=a.fileContent.replace(/^\uFEFF/,""),b=p.Loader.evalPlugin(c,n,s,a.options,a.filename),b instanceof h)return l(b)}else p.addPlugin(a)}),new f(n,s,o).parse(b,function(a,b){return a?l(a):void l(null,b,s,c)},c)};return k}},{"./contexts":12,"./less-error":36,"./parser/parser":42,"./plugin-manager":43,"./utils":86,promise:void 0}],40:[function(a,b,c){b.exports=function(a,b){function c(b){var c=h-q;c<512&&!b||!c||(p.push(a.slice(q,h+1)),q=h+1)}var d,e,f,g,h,i,j,k,l,m=a.length,n=0,o=0,p=[],q=0;for(h=0;h<m;h++)if(j=a.charCodeAt(h),!(j>=97&&j<=122||j<34))switch(j){case 40:o++,e=h;continue;case 41:if(--o<0)return b("missing opening `(`",h);continue;case 59:o||c();continue;case 123:n++,d=h;continue;case 125:if(--n<0)return b("missing opening `{`",h);n||o||c();continue;case 92:if(h<m-1){h++;continue}return b("unescaped `\\`",h);case 34:case 39:case 96:for(l=0,i=h,h+=1;h<m;h++)if(k=a.charCodeAt(h),!(k>96)){if(k==j){l=1;break}if(92==k){if(h==m-1)return b("unescaped `\\`",h);h++}}if(l)continue;return b("unmatched `"+String.fromCharCode(j)+"`",i);case 47:if(o||h==m-1)continue;if(k=a.charCodeAt(h+1),47==k)for(h+=2;h<m&&(k=a.charCodeAt(h),!(k<=13)||10!=k&&13!=k);h++);else if(42==k){for(f=i=h,h+=2;h<m-1&&(k=a.charCodeAt(h),125==k&&(g=h),42!=k||47!=a.charCodeAt(h+1));h++);if(h==m-1)return b("missing closing `*/`",i);h++}continue;case 42:if(h<m-1&&47==a.charCodeAt(h+1))return b("unmatched `/*`",h);continue}return 0!==n?f>d&&g>f?b("missing closing `}` or `*/`",d):b("missing closing `}`",d):0!==o?b("missing closing `)`",e):(c(!0),p)}},{}],41:[function(a,b,c){var d=a("./chunker");b.exports=function(){function a(d){for(var e,f,j,p=k.i,q=c,s=k.i-i,t=k.i+h.length-s,u=k.i+=d,v=b;k.i<t;k.i++){if(e=v.charCodeAt(k.i),k.autoCommentAbsorb&&e===r){if(f=v.charAt(k.i+1),"/"===f){j={index:k.i,isLineComment:!0};var w=v.indexOf("\n",k.i+2);w<0&&(w=t),k.i=w,j.text=v.substr(j.index,k.i-j.index),k.commentStore.push(j);continue}if("*"===f){var x=v.indexOf("*/",k.i+2);if(x>=0){j={index:k.i,text:v.substr(k.i,x+2-k.i),isLineComment:!1},k.i+=j.text.length-1,k.commentStore.push(j);continue}}break}if(e!==l&&e!==n&&e!==m&&e!==o)break}if(h=h.slice(d+k.i-u+s),i=k.i,!h.length){if(c<g.length-1)return h=g[++c],a(0),!0;k.finished=!0}return p!==k.i||q!==c}var b,c,e,f,g,h,i,j=[],k={},l=32,m=9,n=10,o=13,p=43,q=44,r=47,s=57;return k.save=function(){i=k.i,j.push({current:h,i:k.i,j:c})},k.restore=function(a){(k.i>e||k.i===e&&a&&!f)&&(e=k.i,f=a);var b=j.pop();h=b.current,i=k.i=b.i,c=b.j},k.forget=function(){j.pop()},k.isWhitespace=function(a){var c=k.i+(a||0),d=b.charCodeAt(c);return d===l||d===o||d===m||d===n},k.$re=function(b){k.i>i&&(h=h.slice(k.i-i),i=k.i);var c=b.exec(h);return c?(a(c[0].length),"string"==typeof c?c:1===c.length?c[0]:c):null},k.$char=function(c){return b.charAt(k.i)!==c?null:(a(1),c)},k.$str=function(c){for(var d=c.length,e=0;e<d;e++)if(b.charAt(k.i+e)!==c.charAt(e))return null;return a(d),c},k.$quoted=function(){var c=b.charAt(k.i);if("'"===c||'"'===c){for(var d=b.length,e=k.i,f=1;f+e<d;f++){var g=b.charAt(f+e);switch(g){case"\\":f++;continue;case"\r":case"\n":break;case c:var h=b.substr(e,f+1);return a(f+1),h}}return null}},k.autoCommentAbsorb=!0,k.commentStore=[],k.finished=!1,k.peek=function(a){if("string"==typeof a){for(var c=0;c<a.length;c++)if(b.charAt(k.i+c)!==a.charAt(c))return!1;return!0}return a.test(h)},k.peekChar=function(a){return b.charAt(k.i)===a},k.currentChar=function(){return b.charAt(k.i)},k.getInput=function(){return b},k.peekNotNumeric=function(){var a=b.charCodeAt(k.i);return a>s||a<p||a===r||a===q},k.start=function(f,j,l){b=f,k.i=c=i=e=0,g=j?d(f,l):[f],h=g[0],a(0)},k.end=function(){var a,c=k.i>=b.length;return k.i<e&&(a=f,k.i=e),{isFinished:c,furthest:k.i,furthestPossibleErrorMessage:a,furthestReachedEnd:k.i>=b.length-1,furthestChar:b[k.i]}},k}},{"./chunker":40}],42:[function(a,b,c){var d=a("../less-error"),e=a("../tree"),f=a("../visitors"),g=a("./parser-input"),h=a("../utils"),i=a("../functions/function-registry"),j=function k(a,b,c){function j(a,e){throw new d({index:q.i,filename:c.filename,type:e||"Syntax",message:a},b)}function l(a,b,c){var d=a instanceof Function?a.call(p):q.$re(a);return d?d:void j(b||("string"==typeof a?"expected '"+a+"' got '"+q.currentChar()+"'":"unexpected token"))}function m(a,b){return q.$char(a)?a:void j(b||"expected '"+a+"' got '"+q.currentChar()+"'")}function n(a){var b=c.filename;return{lineNumber:h.getLocation(a,q.getInput()).line+1,fileName:b}}function o(a,c,e,f,g){var h,i=[],j=q;try{j.start(a,!1,function(a,b){g({message:a,index:b+e})});for(var k,l,m=0;k=c[m];m++)l=j.i,h=p[k](),h?(h._index=l+e,h._fileInfo=f,i.push(h)):i.push(null);var n=j.end();n.isFinished?g(null,i):g(!0,null)}catch(o){throw new d({index:o.index+e,message:o.message},b,f.filename)}}var p,q=g();return{parserInput:q,imports:b,fileInfo:c,parseNode:o,parse:function(g,h,j){var l,m,n,o,p=null,r="";if(m=j&&j.globalVars?k.serializeVars(j.globalVars)+"\n":"",n=j&&j.modifyVars?"\n"+k.serializeVars(j.modifyVars):"",a.pluginManager)for(var s=a.pluginManager.getPreProcessors(),t=0;t<s.length;t++)g=s[t].process(g,{context:a,imports:b,fileInfo:c});(m||j&&j.banner)&&(r=(j&&j.banner?j.banner:"")+m,o=b.contentsIgnoredChars,o[c.filename]=o[c.filename]||0,o[c.filename]+=r.length),g=g.replace(/\r\n?/g,"\n"),g=r+g.replace(/^\uFEFF/,"")+n,b.contents[c.filename]=g;try{q.start(g,a.chunkInput,function(a,e){throw new d({index:e,type:"Parse",message:a,filename:c.filename},b)}),e.Node.prototype.parse=this,l=new e.Ruleset(null,this.parsers.primary()),e.Node.prototype.rootNode=l,l.root=!0,l.firstRoot=!0,l.functionRegistry=i.inherit()}catch(u){return h(new d(u,b,c.filename))}var v=q.end();if(!v.isFinished){var w=v.furthestPossibleErrorMessage;w||(w="Unrecognised input","}"===v.furthestChar?w+=". Possibly missing opening '{'":")"===v.furthestChar?w+=". Possibly missing opening '('":v.furthestReachedEnd&&(w+=". Possibly missing something")),p=new d({type:"Parse",message:w,index:v.furthest,filename:c.filename},b)}var x=function(a){return a=p||a||b.error,a?(a instanceof d||(a=new d(a,b,c.filename)),h(a)):h(null,l)};return a.processImports===!1?x():void new f.ImportVisitor(b,x).run(l)},parsers:p={primary:function(){for(var a,b=this.mixin,c=[];;){for(;;){if(a=this.comment(),!a)break;c.push(a)}if(q.finished)break;if(q.peek("}"))break;if(a=this.extendRule())c=c.concat(a);else if(a=b.definition()||this.declaration()||this.ruleset()||b.call()||this.variableCall()||this.entities.call()||this.atrule())c.push(a);else{for(var d=!1;q.$char(";");)d=!0;if(!d)break}}return c},comment:function(){if(q.commentStore.length){var a=q.commentStore.shift();return new e.Comment(a.text,a.isLineComment,a.index,c)}},entities:{quoted:function(){var a,b=q.i,d=!1;return q.save(),q.$char("~")&&(d=!0),(a=q.$quoted())?(q.forget(),new e.Quoted(a.charAt(0),a.substr(1,a.length-2),d,b,c)):void q.restore()},keyword:function(){var a=q.$char("%")||q.$re(/^\[?[_A-Za-z-][_A-Za-z0-9-]*\]?/);if(a)return e.Color.fromKeyword(a)||new e.Keyword(a)},call:function(){var a,b,d,f=q.i;if(!q.peek(/^url\(/i))return q.save(),(a=q.$re(/^([\w-]+|%|progid:[\w\.]+)\(/))?(a=a[1],d=this.customFuncCall(a),d&&(b=d.parse(),b&&d.stop)?(q.forget(),b):(b=this.arguments(b),q.$char(")")?(q.forget(),new e.Call(a,b,f,c)):void q.restore("Could not parse call arguments or missing ')'"))):void q.forget()},customFuncCall:function(a){function b(a,b){return{parse:a,stop:b}}function c(){return[l(p.condition,"expected condition")]}return{alpha:b(p.ieAlpha,!0),"boolean":b(c),"if":b(c)}[a.toLowerCase()]},arguments:function(a){var b,c,d=a||[],f=[];for(q.save();;){if(a)a=!1;else{if(c=p.detachedRuleset()||this.assignment()||p.expression(),!c)break;c.value&&1==c.value.length&&(c=c.value[0]),d.push(c)}q.$char(",")||(q.$char(";")||b)&&(b=!0,c=d.length<1?d[0]:new e.Value(d),f.push(c),d=[])}return q.forget(),b?f:d},literal:function(){return this.dimension()||this.color()||this.quoted()||this.unicodeDescriptor()},assignment:function(){var a,b;return q.save(),(a=q.$re(/^\w+(?=\s?=)/i))&&q.$char("=")&&(b=p.entity())?(q.forget(),new e.Assignment(a,b)):void q.restore()},url:function(){var a,b=q.i;return q.autoCommentAbsorb=!1,q.$str("url(")?(a=this.quoted()||this.variable()||this.property()||q.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/)||"",q.autoCommentAbsorb=!0,m(")"),new e.URL(null!=a.value||a instanceof e.Variable||a instanceof e.Property?a:new e.Anonymous(a,b),b,c)):void(q.autoCommentAbsorb=!0)},variable:function(){var a,b=q.i;if("@"===q.currentChar()&&(a=q.$re(/^@@?[\w-]+/)))return new e.Variable(a,b,c)},variableCurly:function(){var a,b=q.i;if("@"===q.currentChar()&&(a=q.$re(/^@\{([\w-]+)\}/)))return new e.Variable("@"+a[1],b,c)},property:function(){var a,b=q.i;if("$"===q.currentChar()&&(a=q.$re(/^\$[\w-]+/)))return new e.Property(a,b,c)},propertyCurly:function(){var a,b=q.i;if("$"===q.currentChar()&&(a=q.$re(/^\$\{([\w-]+)\}/)))return new e.Property("$"+a[1],b,c)},color:function(){var a;if("#"===q.currentChar()&&(a=q.$re(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))){var b=a.input.match(/^#([\w]+).*/);return b=b[1],b.match(/^[A-Fa-f0-9]+$/)||j("Invalid HEX color code"),new e.Color(a[1],(void 0),"#"+b)}},colorKeyword:function(){q.save();var a=q.autoCommentAbsorb;q.autoCommentAbsorb=!1;var b=q.$re(/^[_A-Za-z-][_A-Za-z0-9-]+/);if(q.autoCommentAbsorb=a,!b)return void q.forget();q.restore();var c=e.Color.fromKeyword(b);return c?(q.$str(b),c):void 0},dimension:function(){if(!q.peekNotNumeric()){var a=q.$re(/^([+-]?\d*\.?\d+)(%|[a-z_]+)?/i);return a?new e.Dimension(a[1],a[2]):void 0}},unicodeDescriptor:function(){var a;if(a=q.$re(/^U\+[0-9a-fA-F?]+(\-[0-9a-fA-F?]+)?/))return new e.UnicodeDescriptor(a[0])},javascript:function(){var a,b=q.i;q.save();var d=q.$char("~"),f=q.$char("`");return f?(a=q.$re(/^[^`]*`/))?(q.forget(),new e.JavaScript(a.substr(0,a.length-1),Boolean(d),b,c)):void q.restore("invalid javascript definition"):void q.restore()}},variable:function(){var a;if("@"===q.currentChar()&&(a=q.$re(/^(@[\w-]+)\s*:/)))return a[1]},variableCall:function(){var a;if("@"===q.currentChar()&&(a=q.$re(/^(@[\w-]+)\(\s*\)/))&&p.end())return new e.VariableCall(a[1])},extend:function(a){var b,d,f,g,h,i=q.i;if(q.$str(a?"&:extend(":":extend(")){do{for(f=null,b=null;!(f=q.$re(/^(all)(?=\s*(\)|,))/))&&(d=this.element());)b?b.push(d):b=[d];f=f&&f[1],b||j("Missing target selector for :extend()."),h=new e.Extend(new e.Selector(b),f,i,c),g?g.push(h):g=[h]}while(q.$char(","));return l(/^\)/),a&&l(/^;/),g}},extendRule:function(){return this.extend(!0)},mixin:{call:function(){var a,b,d,f,g,h,i=q.currentChar(),j=!1,k=q.i;if("."===i||"#"===i){for(q.save();;){if(a=q.i,f=q.$re(/^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/),!f)break;d=new e.Element(g,f,a,c),b?b.push(d):b=[d],g=q.$char(">")}return b&&(q.$char("(")&&(h=this.args(!0).args,m(")")),p.important()&&(j=!0),p.end())?(q.forget(),new e.mixin.Call(b,h,k,c,j)):void q.restore()}},args:function(a){var b,c,d,f,g,h,i,k=p.entities,l={args:null,variadic:!1},m=[],n=[],o=[];for(q.save();;){if(a)h=p.detachedRuleset()||p.expression();else{if(q.commentStore.length=0,q.$str("...")){l.variadic=!0,q.$char(";")&&!b&&(b=!0),(b?n:o).push({variadic:!0});break}h=k.variable()||k.property()||k.literal()||k.keyword()}if(!h)break;f=null,h.throwAwayComments&&h.throwAwayComments(),g=h;var r=null;if(a?h.value&&1==h.value.length&&(r=h.value[0]):r=h,r&&(r instanceof e.Variable||r instanceof e.Property))if(q.$char(":")){if(m.length>0&&(b&&j("Cannot mix ; and , as delimiter types"),c=!0),g=p.detachedRuleset()||p.expression(),!g){if(!a)return q.restore(),l.args=[],l;j("could not understand value for named argument")}f=d=r.name}else if(q.$str("...")){if(!a){l.variadic=!0,q.$char(";")&&!b&&(b=!0),(b?n:o).push({name:h.name,variadic:!0});break}i=!0}else a||(d=f=r.name,g=null);g&&m.push(g),o.push({name:f,value:g,expand:i}),q.$char(",")||(q.$char(";")||b)&&(c&&j("Cannot mix ; and , as delimiter types"),b=!0,m.length>1&&(g=new e.Value(m)),n.push({name:d,value:g,expand:i}),d=null,m=[],c=!1)}return q.forget(),l.args=b?n:o,l},definition:function(){var a,b,c,d,f=[],g=!1;if(!("."!==q.currentChar()&&"#"!==q.currentChar()||q.peek(/^[^{]*\}/)))if(q.save(),b=q.$re(/^([#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+)\s*\(/)){a=b[1];var h=this.args(!1);if(f=h.args,g=h.variadic,!q.$char(")"))return void q.restore("Missing closing ')'");if(q.commentStore.length=0,q.$str("when")&&(d=l(p.conditions,"expected condition")),c=p.block())return q.forget(),new e.mixin.Definition(a,f,c,d,g);q.restore()}else q.forget()}},entity:function(){var a=this.entities;return this.comment()||a.literal()||a.variable()||a.url()||a.property()||a.call()||a.keyword()||a.javascript()},end:function(){return q.$char(";")||q.peek("}")},ieAlpha:function(){var a;if(q.$re(/^opacity=/i))return a=q.$re(/^\d+/),a||(a=l(p.entities.variable,"Could not parse alpha"),a="@{"+a.name.slice(1)+"}"),m(")"),new e.Quoted("","alpha(opacity="+a+")")},element:function(){var a,b,d,f=q.i;if(b=this.combinator(),a=q.$re(/^(?:\d+\.\d+|\d+)%/)||q.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/)||q.$char("*")||q.$char("&")||this.attribute()||q.$re(/^\([^&()@]+\)/)||q.$re(/^[\.#:](?=@)/)||this.entities.variableCurly(),a||(q.save(),q.$char("(")?(d=this.selector(!1))&&q.$char(")")?(a=new e.Paren(d),q.forget()):q.restore("Missing closing ')'"):q.forget()),a)return new e.Element(b,a,f,c)},combinator:function(){var a=q.currentChar();if("/"===a){q.save();var b=q.$re(/^\/[a-z]+\//i);if(b)return q.forget(),new e.Combinator(b);q.restore()}if(">"===a||"+"===a||"~"===a||"|"===a||"^"===a){for(q.i++,"^"===a&&"^"===q.currentChar()&&(a="^^",q.i++);q.isWhitespace();)q.i++;return new e.Combinator(a)}return new e.Combinator(q.isWhitespace(-1)?" ":null)},selector:function(a){var b,d,f,g,h,i,k,m=q.i;for(a=a!==!1;(a&&(d=this.extend())||a&&(i=q.$str("when"))||(g=this.element()))&&(i?k=l(this.conditions,"expected condition"):k?j("CSS guard can only be used at the end of selector"):d?h=h?h.concat(d):d:(h&&j("Extend can only be used at the end of selector"),f=q.currentChar(),b?b.push(g):b=[g],g=null),"{"!==f&&"}"!==f&&";"!==f&&","!==f&&")"!==f););return b?new e.Selector(b,h,k,m,c):void(h&&j("Extend must be used to extend a selector, it cannot be used on its own"))},attribute:function(){if(q.$char("[")){var a,b,c,d=this.entities;return(a=d.variableCurly())||(a=l(/^(?:[_A-Za-z0-9-\*]*\|)?(?:[_A-Za-z0-9-]|\\.)+/)),c=q.$re(/^[|~*$^]?=/),c&&(b=d.quoted()||q.$re(/^[0-9]+%/)||q.$re(/^[\w-]+/)||d.variableCurly()),m("]"),new e.Attribute(a,c,b)}},block:function(){var a;if(q.$char("{")&&(a=this.primary())&&q.$char("}"))return a},blockRuleset:function(){var a=this.block();return a&&(a=new e.Ruleset(null,a)),a},detachedRuleset:function(){var a=this.blockRuleset();if(a)return new e.DetachedRuleset(a)},ruleset:function(){var b,c,d,f;for(q.save(),a.dumpLineNumbers&&(f=n(q.i));;){if(c=this.selector(),!c)break;if(b?b.push(c):b=[c],q.commentStore.length=0,c.condition&&b.length>1&&j("Guards are only currently allowed on a single selector."),!q.$char(","))break;c.condition&&j("Guards are only currently allowed on a single selector."),q.commentStore.length=0}if(b&&(d=this.block())){q.forget();var g=new e.Ruleset(b,d,a.strictImports);return a.dumpLineNumbers&&(g.debugInfo=f),g}q.restore()},declaration:function(){var a,b,d,f,g,h=q.i,i=q.currentChar();if("."!==i&&"#"!==i&&"&"!==i&&":"!==i)if(q.save(),a=this.variable()||this.ruleProperty()){if(g="string"==typeof a,g&&(b=this.detachedRuleset()),q.commentStore.length=0,!b){if(f=!g&&a.length>1&&a.pop().value,b=this.anonymousValue())return q.forget(),new e.Declaration(a,b,(!1),f,h,c);b||(b=this.value()),d=this.important()}if(b&&this.end())return q.forget(),new e.Declaration(a,b,d,f,h,c);q.restore()}else q.restore()},anonymousValue:function(){var a=q.i,b=q.$re(/^([^@\$+\/'"*`(;{}-]*);/);if(b)return new e.Anonymous(b[1],a)},"import":function(){var a,b,d=q.i,f=q.$re(/^@import?\s+/);if(f){var g=(f?this.importOptions():null)||{};if(a=this.entities.quoted()||this.entities.url())return b=this.mediaFeatures(),q.$char(";")||(q.i=d,j("missing semi-colon or unrecognised media features on import")),b=b&&new e.Value(b),new e.Import(a,b,g,d,c);q.i=d,j("malformed import statement")}},importOptions:function(){var a,b,c,d={};if(!q.$char("("))return null;do if(a=this.importOption()){switch(b=a,c=!0,b){case"css":b="less",c=!1;break;case"once":b="multiple",c=!1}if(d[b]=c,!q.$char(","))break}while(a);return m(")"),d},importOption:function(){var a=q.$re(/^(less|css|multiple|once|inline|reference|optional)/);if(a)return a[1]},mediaFeature:function(){var a,b,d=this.entities,f=[];q.save();do a=d.keyword()||d.variable(),a?f.push(a):q.$char("(")&&(b=this.property(),a=this.value(),q.$char(")")?b&&a?f.push(new e.Paren(new e.Declaration(b,a,null,null,q.i,c,(!0)))):a?f.push(new e.Paren(a)):j("badly formed media feature definition"):j("Missing closing ')'","Parse"));while(a);if(q.forget(),f.length>0)return new e.Expression(f)},mediaFeatures:function(){var a,b=this.entities,c=[];do if(a=this.mediaFeature()){if(c.push(a),!q.$char(","))break}else if(a=b.variable(),a&&(c.push(a),!q.$char(",")))break;while(a);return c.length>0?c:null},media:function(){var b,d,f,g,h=q.i;return a.dumpLineNumbers&&(g=n(h)),q.save(),q.$str("@media")?(b=this.mediaFeatures(),d=this.block(),d||j("media definitions require block statements after any features"),q.forget(),f=new e.Media(d,b,h,c),a.dumpLineNumbers&&(f.debugInfo=g),f):void q.restore()},plugin:function(){
+var a,b,d,f=q.i,g=q.$re(/^@plugin?\s+/);if(g){if(b=this.pluginArgs(),d=b?{pluginArgs:b,isPlugin:!0}:{isPlugin:!0},a=this.entities.quoted()||this.entities.url())return q.$char(";")||(q.i=f,j("missing semi-colon on @plugin")),new e.Import(a,null,d,f,c);q.i=f,j("malformed @plugin statement")}},pluginArgs:function(){if(q.save(),!q.$char("("))return q.restore(),null;var a=q.$re(/^\s*([^\);]+)\)\s*/);return a[1]?(q.forget(),a[1].trim()):(q.restore(),null)},atrule:function(){var b,d,f,g,h,i,k,l=q.i,m=!0,o=!0;if("@"===q.currentChar()){if(d=this["import"]()||this.plugin()||this.media())return d;if(q.save(),b=q.$re(/^@[a-z-]+/)){switch(g=b,"-"==b.charAt(1)&&b.indexOf("-",2)>0&&(g="@"+b.slice(b.indexOf("-",2)+1)),g){case"@charset":h=!0,m=!1;break;case"@namespace":i=!0,m=!1;break;case"@keyframes":case"@counter-style":h=!0;break;case"@document":case"@supports":k=!0,o=!1;break;default:k=!0}return q.commentStore.length=0,h?(d=this.entity(),d||j("expected "+b+" identifier")):i?(d=this.expression(),d||j("expected "+b+" expression")):k&&(d=(q.$re(/^[^{;]+/)||"").trim(),m="{"==q.currentChar(),d&&(d=new e.Anonymous(d))),m&&(f=this.blockRuleset()),f||!m&&d&&q.$char(";")?(q.forget(),new e.AtRule(b,d,f,l,c,a.dumpLineNumbers?n(l):null,o)):void q.restore("at-rule options not recognised")}}},value:function(){var a,b=[],c=q.i;do if(a=this.expression(),a&&(b.push(a),!q.$char(",")))break;while(a);if(b.length>0)return new e.Value(b,c)},important:function(){if("!"===q.currentChar())return q.$re(/^! *important/)},sub:function(){var a,b;return q.save(),q.$char("(")?(a=this.addition(),a&&q.$char(")")?(q.forget(),b=new e.Expression([a]),b.parens=!0,b):void q.restore("Expected ')'")):void q.restore()},multiplication:function(){var a,b,c,d,f;if(a=this.operand()){for(f=q.isWhitespace(-1);;){if(q.peek(/^\/[*\/]/))break;if(q.save(),c=q.$char("/")||q.$char("*"),!c){q.forget();break}if(b=this.operand(),!b){q.restore();break}q.forget(),a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=q.isWhitespace(-1)}return d||a}},addition:function(){var a,b,c,d,f;if(a=this.multiplication()){for(f=q.isWhitespace(-1);;){if(c=q.$re(/^[-+]\s+/)||!f&&(q.$char("+")||q.$char("-")),!c)break;if(b=this.multiplication(),!b)break;a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=q.isWhitespace(-1)}return d||a}},conditions:function(){var a,b,c,d=q.i;if(a=this.condition()){for(;;){if(!q.peek(/^,\s*(not\s*)?\(/)||!q.$char(","))break;if(b=this.condition(),!b)break;c=new e.Condition("or",c||a,b,d)}return c||a}},condition:function(){function a(){return q.$str("or")}var b,c,d;if(b=this.conditionAnd(this)){if(c=a()){if(d=this.condition(),!d)return;b=new e.Condition(c,b,d)}return b}},conditionAnd:function(){function a(a){return a.negatedCondition()||a.parenthesisCondition()}function b(){return q.$str("and")}var c,d,f;if(c=a(this)){if(d=b()){if(f=this.conditionAnd(),!f)return;c=new e.Condition(d,c,f)}return c}},negatedCondition:function(){if(q.$str("not")){var a=this.parenthesisCondition();return a&&(a.negate=!a.negate),a}},parenthesisCondition:function(){function a(a){var b;return q.save(),(b=a.condition())&&q.$char(")")?(q.forget(),b):void q.restore()}var b;return q.save(),q.$str("(")?(b=a(this))?(q.forget(),b):(b=this.atomicCondition())?q.$char(")")?(q.forget(),b):void q.restore("expected ')' got '"+q.currentChar()+"'"):void q.restore():void q.restore()},atomicCondition:function(){var a,b,c,d,f=this.entities,g=q.i;if(a=this.addition()||f.keyword()||f.quoted())return q.$char(">")?d=q.$char("=")?">=":">":q.$char("<")?d=q.$char("=")?"<=":"<":q.$char("=")&&(d=q.$char(">")?"=>":q.$char("<")?"=<":"="),d?(b=this.addition()||f.keyword()||f.quoted(),b?c=new e.Condition(d,a,b,g,(!1)):j("expected expression")):c=new e.Condition("=",a,new e.Keyword("true"),g,(!1)),c},operand:function(){var a,b=this.entities;q.peek(/^-[@\$\(]/)&&(a=q.$char("-"));var c=this.sub()||b.dimension()||b.color()||b.variable()||b.property()||b.call()||b.colorKeyword();return a&&(c.parensInOp=!0,c=new e.Negative(c)),c},expression:function(){var a,b,c=[],d=q.i;do a=this.comment(),a?c.push(a):(a=this.addition()||this.entity(),a&&(c.push(a),q.peek(/^\/[\/*]/)||(b=q.$char("/"),b&&c.push(new e.Anonymous(b,d)))));while(a);if(c.length>0)return new e.Expression(c)},property:function(){var a=q.$re(/^(\*?-?[_a-zA-Z0-9-]+)\s*:/);if(a)return a[1]},ruleProperty:function(){function a(a){var b=q.i,c=q.$re(a);if(c)return g.push(b),f.push(c[1])}var b,d,f=[],g=[];q.save();var h=q.$re(/^([_a-zA-Z0-9-]+)\s*:/);if(h)return f=[new e.Keyword(h[1])],q.forget(),f;for(a(/^(\*?)/);;)if(!a(/^((?:[\w-]+)|(?:[@\$]\{[\w-]+\}))/))break;if(f.length>1&&a(/^((?:\+_|\+)?)\s*:/)){for(q.forget(),""===f[0]&&(f.shift(),g.shift()),d=0;d<f.length;d++)b=f[d],f[d]="@"!==b.charAt(0)&&"$"!==b.charAt(0)?new e.Keyword(b):"@"===b.charAt(0)?new e.Variable("@"+b.slice(2,-1),g[d],c):new e.Property("$"+b.slice(2,-1),g[d],c);return f}q.restore()}}}};j.serializeVars=function(a){var b="";for(var c in a)if(Object.hasOwnProperty.call(a,c)){var d=a[c];b+=("@"===c[0]?"":"@")+c+": "+d+(";"===String(d).slice(-1)?"":";")}return b},b.exports=j},{"../functions/function-registry":26,"../less-error":36,"../tree":65,"../utils":86,"../visitors":90,"./parser-input":41}],43:[function(a,b,c){var d,e=function(a){this.less=a,this.visitors=[],this.preProcessors=[],this.postProcessors=[],this.installedPlugins=[],this.fileManagers=[],this.iterator=-1,this.pluginCache={},this.Loader=new a.PluginLoader(a)},f=function(a,b){return!b&&d||(d=new e(a)),d};e.prototype.addPlugins=function(a){if(a)for(var b=0;b<a.length;b++)this.addPlugin(a[b])},e.prototype.addPlugin=function(a,b,c){this.installedPlugins.push(a),b&&(this.pluginCache[b]=a),a.install&&a.install(this.less,this,c||this.less.functions.functionRegistry)},e.prototype.get=function(a){return this.pluginCache[a]},e.prototype.addVisitor=function(a){this.visitors.push(a)},e.prototype.addPreProcessor=function(a,b){var c;for(c=0;c<this.preProcessors.length&&!(this.preProcessors[c].priority>=b);c++);this.preProcessors.splice(c,0,{preProcessor:a,priority:b})},e.prototype.addPostProcessor=function(a,b){var c;for(c=0;c<this.postProcessors.length&&!(this.postProcessors[c].priority>=b);c++);this.postProcessors.splice(c,0,{postProcessor:a,priority:b})},e.prototype.addFileManager=function(a){this.fileManagers.push(a)},e.prototype.getPreProcessors=function(){for(var a=[],b=0;b<this.preProcessors.length;b++)a.push(this.preProcessors[b].preProcessor);return a},e.prototype.getPostProcessors=function(){for(var a=[],b=0;b<this.postProcessors.length;b++)a.push(this.postProcessors[b].postProcessor);return a},e.prototype.getVisitors=function(){return this.visitors},e.prototype.visitor=function(){var a=this;return{first:function(){return a.iterator=-1,a.visitors[a.iterator]},get:function(){return a.iterator+=1,a.visitors[a.iterator]}}},e.prototype.getFileManagers=function(){return this.fileManagers},b.exports=f},{}],44:[function(a,b,c){var d,e=a("./utils");b.exports=function(b,c,f){var g=function(b,f,h){if("function"==typeof f?(h=f,f=e.defaults(this.options,{})):f=e.defaults(this.options,f||{}),!h){d||(d="undefined"==typeof Promise?a("promise"):Promise);var i=this;return new d(function(a,c){g.call(i,b,f,function(b,d){b?c(b):a(d)})})}this.parse(b,f,function(a,b,d,e){if(a)return h(a);var f;try{var g=new c(b,d);f=g.toCSS(e)}catch(a){return h(a)}h(null,f)})};return g}},{"./utils":86,promise:void 0}],45:[function(a,b,c){b.exports=function(a,b){var c=function(a){this.options=a};return c.prototype.toCSS=function(b,c,d){var e=new a({contentsIgnoredCharsMap:d.contentsIgnoredChars,rootNode:b,contentsMap:d.contents,sourceMapFilename:this.options.sourceMapFilename,sourceMapURL:this.options.sourceMapURL,outputFilename:this.options.sourceMapOutputFilename,sourceMapBasepath:this.options.sourceMapBasepath,sourceMapRootpath:this.options.sourceMapRootpath,outputSourceFiles:this.options.outputSourceFiles,sourceMapGenerator:this.options.sourceMapGenerator,sourceMapFileInline:this.options.sourceMapFileInline}),f=e.toCSS(c);return this.sourceMap=e.sourceMap,this.sourceMapURL=e.sourceMapURL,this.options.sourceMapInputFilename&&(this.sourceMapInputFilename=e.normalizeFilename(this.options.sourceMapInputFilename)),void 0!==this.options.sourceMapBasepath&&void 0!==this.sourceMapURL&&(this.sourceMapURL=e.removeBasepath(this.sourceMapURL)),f+this.getCSSAppendage()},c.prototype.getCSSAppendage=function(){var a=this.sourceMapURL;if(this.options.sourceMapFileInline){if(void 0===this.sourceMap)return"";a="data:application/json;base64,"+b.encodeBase64(this.sourceMap)}return a?"/*# sourceMappingURL="+a+" */":""},c.prototype.getExternalSourceMap=function(){return this.sourceMap},c.prototype.setExternalSourceMap=function(a){this.sourceMap=a},c.prototype.isInline=function(){return this.options.sourceMapFileInline},c.prototype.getSourceMapURL=function(){return this.sourceMapURL},c.prototype.getOutputFilename=function(){return this.options.sourceMapOutputFilename},c.prototype.getInputFilename=function(){return this.sourceMapInputFilename},c}},{}],46:[function(a,b,c){b.exports=function(a){var b=function(b){this._css=[],this._rootNode=b.rootNode,this._contentsMap=b.contentsMap,this._contentsIgnoredCharsMap=b.contentsIgnoredCharsMap,b.sourceMapFilename&&(this._sourceMapFilename=b.sourceMapFilename.replace(/\\/g,"/")),this._outputFilename=b.outputFilename,this.sourceMapURL=b.sourceMapURL,b.sourceMapBasepath&&(this._sourceMapBasepath=b.sourceMapBasepath.replace(/\\/g,"/")),b.sourceMapRootpath?(this._sourceMapRootpath=b.sourceMapRootpath.replace(/\\/g,"/"),"/"!==this._sourceMapRootpath.charAt(this._sourceMapRootpath.length-1)&&(this._sourceMapRootpath+="/")):this._sourceMapRootpath="",this._outputSourceFiles=b.outputSourceFiles,this._sourceMapGeneratorConstructor=a.getSourceMapGenerator(),this._lineNumber=0,this._column=0};return b.prototype.removeBasepath=function(a){return this._sourceMapBasepath&&0===a.indexOf(this._sourceMapBasepath)&&(a=a.substring(this._sourceMapBasepath.length),"\\"!==a.charAt(0)&&"/"!==a.charAt(0)||(a=a.substring(1))),a},b.prototype.normalizeFilename=function(a){return a=a.replace(/\\/g,"/"),a=this.removeBasepath(a),(this._sourceMapRootpath||"")+a},b.prototype.add=function(a,b,c,d){if(a){var e,f,g,h,i;if(b){var j=this._contentsMap[b.filename];this._contentsIgnoredCharsMap[b.filename]&&(c-=this._contentsIgnoredCharsMap[b.filename],c<0&&(c=0),j=j.slice(this._contentsIgnoredCharsMap[b.filename])),j=j.substring(0,c),f=j.split("\n"),h=f[f.length-1]}if(e=a.split("\n"),g=e[e.length-1],b)if(d)for(i=0;i<e.length;i++)this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+i+1,column:0===i?this._column:0},original:{line:f.length+i,column:0===i?h.length:0},source:this.normalizeFilename(b.filename)});else this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+1,column:this._column},original:{line:f.length,column:h.length},source:this.normalizeFilename(b.filename)});1===e.length?this._column+=g.length:(this._lineNumber+=e.length-1,this._column=g.length),this._css.push(a)}},b.prototype.isEmpty=function(){return 0===this._css.length},b.prototype.toCSS=function(a){if(this._sourceMapGenerator=new this._sourceMapGeneratorConstructor({file:this._outputFilename,sourceRoot:null}),this._outputSourceFiles)for(var b in this._contentsMap)if(this._contentsMap.hasOwnProperty(b)){var c=this._contentsMap[b];this._contentsIgnoredCharsMap[b]&&(c=c.slice(this._contentsIgnoredCharsMap[b])),this._sourceMapGenerator.setSourceContent(this.normalizeFilename(b),c)}if(this._rootNode.genCSS(a,this),this._css.length>0){var d,e=JSON.stringify(this._sourceMapGenerator.toJSON());this.sourceMapURL?d=this.sourceMapURL:this._sourceMapFilename&&(d=this._sourceMapFilename),this.sourceMapURL=d,this.sourceMap=e}return this._css.join("")},b}},{}],47:[function(a,b,c){var d=a("./contexts"),e=a("./visitors"),f=a("./tree");b.exports=function(a,b){b=b||{};var c,g=b.variables,h=new d.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof f.Value||(b instanceof f.Expression||(b=new f.Expression([b])),b=new f.Value([b])),new f.Declaration("@"+a,b,(!1),null,0)}),h.frames=[new f.Ruleset(null,g)]);var i,j,k=[new e.JoinSelectorVisitor,new e.MarkVisibleSelectorsVisitor((!0)),new e.ExtendVisitor,new e.ToCSSVisitor({compress:Boolean(b.compress)})];if(b.pluginManager)for(j=b.pluginManager.visitor(),j.first();i=j.get();)i.isPreEvalVisitor&&i.run(a);c=a.eval(h);for(var l=0;l<k.length;l++)k[l].run(c);if(b.pluginManager)for(j.first();i=j.get();)i.isPreEvalVisitor||i.run(c);return c}},{"./contexts":12,"./tree":65,"./visitors":90}],48:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e,f){this.value=a,this._index=b,this._fileInfo=c,this.mapLines=d,this.rulesetLike="undefined"!=typeof e&&e,this.allowRoot=!0,this.copyVisibilityInfo(f)};e.prototype=new d,e.prototype.type="Anonymous",e.prototype.eval=function(){return new e(this.value,this._index,this._fileInfo,this.mapLines,this.rulesetLike,this.visibilityInfo())},e.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},e.prototype.isRulesetLike=function(){return this.rulesetLike},e.prototype.genCSS=function(a,b){this.nodeVisible=Boolean(this.value),this.nodeVisible&&b.add(this.value,this._fileInfo,this._index,this.mapLines)},b.exports=e},{"./node":73}],49:[function(a,b,c){var d=a("./node"),e=function(a,b){this.key=a,this.value=b};e.prototype=new d,e.prototype.type="Assignment",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.eval=function(a){return this.value.eval?new e(this.key,this.value.eval(a)):this},e.prototype.genCSS=function(a,b){b.add(this.key+"="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value)},b.exports=e},{"./node":73}],50:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./ruleset"),g=a("./anonymous"),h=function(a,b,c,f,h,i,j,k){var l;if(this.name=a,this.value=b instanceof d?b:b?new g(b):b,c){for(Array.isArray(c)?this.rules=c:(this.rules=[c],this.rules[0].selectors=new e([],null,null,f,h).createEmptySelectors()),l=0;l<this.rules.length;l++)this.rules[l].allowImports=!0;this.setParent(this.rules,this)}this._index=f,this._fileInfo=h,this.debugInfo=i,this.isRooted=j||!1,this.copyVisibilityInfo(k),this.allowRoot=!0};h.prototype=new d,h.prototype.type="AtRule",h.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visitArray(c)),b&&(this.value=a.visit(b))},h.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},h.prototype.isCharset=function(){return"@charset"===this.name},h.prototype.genCSS=function(a,b){var c=this.value,d=this.rules;b.add(this.name,this.fileInfo(),this.getIndex()),c&&(b.add(" "),c.genCSS(a,b)),d?this.outputRuleset(a,b,d):b.add(";")},h.prototype.eval=function(a){var b,c,d=this.value,e=this.rules;return b=a.mediaPath,c=a.mediaBlocks,a.mediaPath=[],a.mediaBlocks=[],d&&(d=d.eval(a)),e&&(e=[e[0].eval(a)],e[0].root=!0),a.mediaPath=b,a.mediaBlocks=c,new h(this.name,d,e,this.getIndex(),this.fileInfo(),this.debugInfo,this.isRooted,this.visibilityInfo())},h.prototype.variable=function(a){if(this.rules)return f.prototype.variable.call(this.rules[0],a)},h.prototype.find=function(){if(this.rules)return f.prototype.find.apply(this.rules[0],arguments)},h.prototype.rulesets=function(){if(this.rules)return f.prototype.rulesets.apply(this.rules[0])},h.prototype.outputRuleset=function(a,b,c){var d,e=c.length;if(a.tabLevel=(0|a.tabLevel)+1,a.compress){for(b.add("{"),d=0;d<e;d++)c[d].genCSS(a,b);return b.add("}"),void a.tabLevel--}var f="\n"+Array(a.tabLevel).join("  "),g=f+"  ";if(e){for(b.add(" {"+g),c[0].genCSS(a,b),d=1;d<e;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=h},{"./anonymous":48,"./node":73,"./ruleset":78,"./selector":79}],51:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.key=a,this.op=b,this.value=c};e.prototype=new d,e.prototype.type="Attribute",e.prototype.eval=function(a){return new e(this.key.eval?this.key.eval(a):this.key,this.op,this.value&&this.value.eval?this.value.eval(a):this.value)},e.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},e.prototype.toCSS=function(a){var b=this.key.toCSS?this.key.toCSS(a):this.key;return this.op&&(b+=this.op,b+=this.value.toCSS?this.value.toCSS(a):this.value),"["+b+"]"},b.exports=e},{"./node":73}],52:[function(a,b,c){var d=a("./node"),e=a("./anonymous"),f=a("../functions/function-caller"),g=function(a,b,c,d){this.name=a,this.args=b,this.mathOn="calc"!==a,this._index=c,this._fileInfo=d};g.prototype=new d,g.prototype.type="Call",g.prototype.accept=function(a){this.args&&(this.args=a.visitArray(this.args))},g.prototype.eval=function(a){var b=a.mathOn;a.mathOn=this.mathOn;var c=this.args.map(function(b){return b.eval(a)});a.mathOn=b;var h,i=new f(this.name,a,this.getIndex(),this.fileInfo());if(i.isValid()){try{h=i.call(c)}catch(j){throw{type:j.type||"Runtime",message:"error evaluating function `"+this.name+"`"+(j.message?": "+j.message:""),index:this.getIndex(),filename:this.fileInfo().filename,line:j.lineNumber,column:j.columnNumber}}if(null!==h&&void 0!==h)return h instanceof d||(h=new e(h&&h!==!0?h.toString():null)),h._index=this._index,h._fileInfo=this._fileInfo,h}return new g(this.name,c,this.getIndex(),this.fileInfo())},g.prototype.genCSS=function(a,b){b.add(this.name+"(",this.fileInfo(),this.getIndex());for(var c=0;c<this.args.length;c++)this.args[c].genCSS(a,b),c+1<this.args.length&&b.add(", ");b.add(")")},b.exports=g},{"../functions/function-caller":25,"./anonymous":48,"./node":73}],53:[function(a,b,c){function d(a,b){return Math.min(Math.max(a,0),b)}function e(a){return"#"+a.map(function(a){return a=d(Math.round(a),255),(a<16?"0":"")+a.toString(16)}).join("")}var f=a("./node"),g=a("../data/colors"),h=function(a,b,c){this.rgb=Array.isArray(a)?a:6==a.length?a.match(/.{2}/g).map(function(a){return parseInt(a,16)}):a.split("").map(function(a){return parseInt(a+a,16)}),this.alpha="number"==typeof b?b:1,"undefined"!=typeof c&&(this.value=c)};h.prototype=new f,h.prototype.type="Color",h.prototype.luma=function(){var a=this.rgb[0]/255,b=this.rgb[1]/255,c=this.rgb[2]/255;return a=a<=.03928?a/12.92:Math.pow((a+.055)/1.055,2.4),b=b<=.03928?b/12.92:Math.pow((b+.055)/1.055,2.4),c=c<=.03928?c/12.92:Math.pow((c+.055)/1.055,2.4),.2126*a+.7152*b+.0722*c},h.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},h.prototype.toCSS=function(a,b){var c,e,f=a&&a.compress&&!b;if(this.value)return this.value;if(e=this.fround(a,this.alpha),e<1)return"rgba("+this.rgb.map(function(a){return d(Math.round(a),255)}).concat(d(e,1)).join(","+(f?"":" "))+")";if(c=this.toRGB(),f){var g=c.split("");g[1]===g[2]&&g[3]===g[4]&&g[5]===g[6]&&(c="#"+g[1]+g[3]+g[5])}return c},h.prototype.operate=function(a,b,c){for(var d=new Array(3),e=this.alpha*(1-c.alpha)+c.alpha,f=0;f<3;f++)d[f]=this._operate(a,b,this.rgb[f],c.rgb[f]);return new h(d,e)},h.prototype.toRGB=function(){return e(this.rgb)},h.prototype.toHSL=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=(g+h)/2,j=g-h;if(g===h)a=b=0;else{switch(b=i>.5?j/(2-g-h):j/(g+h),g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,l:i,a:f}},h.prototype.toHSV=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=g,j=g-h;if(b=0===g?0:j/g,g===h)a=0;else{switch(g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,v:i,a:f}},h.prototype.toARGB=function(){return e([255*this.alpha].concat(this.rgb))},h.prototype.compare=function(a){return a.rgb&&a.rgb[0]===this.rgb[0]&&a.rgb[1]===this.rgb[1]&&a.rgb[2]===this.rgb[2]&&a.alpha===this.alpha?0:void 0},h.fromKeyword=function(a){var b,c=a.toLowerCase();if(g.hasOwnProperty(c)?b=new h(g[c].slice(1)):"transparent"===c&&(b=new h([0,0,0],0)),b)return b.value=a,b},b.exports=h},{"../data/colors":13,"./node":73}],54:[function(a,b,c){var d=a("./node"),e=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};e.prototype=new d,e.prototype.type="Combinator";var f={"":!0," ":!0,"|":!0};e.prototype.genCSS=function(a,b){var c=a.compress||f[this.value]?"":" ";b.add(c+this.value+c)},b.exports=e},{"./node":73}],55:[function(a,b,c){var d=a("./node"),e=a("./debug-info"),f=function(a,b,c,d){this.value=a,this.isLineComment=b,this._index=c,this._fileInfo=d,this.allowRoot=!0};f.prototype=new d,f.prototype.type="Comment",f.prototype.genCSS=function(a,b){this.debugInfo&&b.add(e(a,this),this.fileInfo(),this.getIndex()),b.add(this.value)},f.prototype.isSilent=function(a){var b=a.compress&&"!"!==this.value[2];return this.isLineComment||b},b.exports=f},{"./debug-info":57,"./node":73}],56:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e){this.op=a.trim(),this.lvalue=b,this.rvalue=c,this._index=d,this.negate=e};e.prototype=new d,e.prototype.type="Condition",e.prototype.accept=function(a){this.lvalue=a.visit(this.lvalue),this.rvalue=a.visit(this.rvalue)},e.prototype.eval=function(a){var b=function(a,b,c){switch(a){case"and":return b&&c;case"or":return b||c;default:switch(d.compare(b,c)){case-1:return"<"===a||"=<"===a||"<="===a;case 0:return"="===a||">="===a||"=<"===a||"<="===a;case 1:return">"===a||">="===a;default:return!1}}}(this.op,this.lvalue.eval(a),this.rvalue.eval(a));return this.negate?!b:b},b.exports=e},{"./node":73}],57:[function(a,b,c){var d=function(a,b,c){var e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=d.asComment(b);break;case"mediaquery":e=d.asMediaQuery(b);break;case"all":e=d.asComment(b)+(c||"")+d.asMediaQuery(b)}return e};d.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},d.asMediaQuery=function(a){var b=a.debugInfo.fileName;return/^[a-z]+:\/\//i.test(b)||(b="file://"+b),"@media -sass-debug-info{filename{font-family:"+b.replace(/([.:\/\\])/g,function(a){return"\\"==a&&(a="/"),"\\"+a})+"}line{font-family:\\00003"+a.debugInfo.lineNumber+"}}\n"},b.exports=d},{}],58:[function(a,b,c){function d(a,b){var c,d="",e=b.length,f={add:function(a){d+=a}};for(c=0;c<e;c++)b[c].eval(a).genCSS(a,f);return d}var e=a("./node"),f=a("./value"),g=a("./keyword"),h=a("./anonymous"),i=function(a,b,c,d,g,i,j,k){this.name=a,this.value=b instanceof e?b:new f([b?new h(b):null]),this.important=c?" "+c.trim():"",this.merge=d,this._index=g,this._fileInfo=i,this.inline=j||!1,this.variable=void 0!==k?k:a.charAt&&"@"===a.charAt(0),this.allowRoot=!0,this.setParent(this.value,this)};i.prototype=new e,i.prototype.type="Declaration",i.prototype.genCSS=function(a,b){b.add(this.name+(a.compress?":":": "),this.fileInfo(),this.getIndex());try{this.value.genCSS(a,b)}catch(c){throw c.index=this._index,c.filename=this._fileInfo.filename,c}b.add(this.important+(this.inline||a.lastRule&&a.compress?"":";"),this._fileInfo,this._index)},i.prototype.eval=function(a){var b,c=!1,e=this.name,f=this.variable;"string"!=typeof e&&(e=1===e.length&&e[0]instanceof g?e[0].value:d(a,e),f=!1),"font"!==e||a.strictMath||(c=!0,a.strictMath=!0);try{if(a.importantScope.push({}),b=this.value.eval(a),!this.variable&&"DetachedRuleset"===b.type)throw{message:"Rulesets cannot be evaluated on a property.",index:this.getIndex(),filename:this.fileInfo().filename};var h=this.important,j=a.importantScope.pop();return!h&&j.important&&(h=j.important),new i(e,b,h,this.merge,this.getIndex(),this.fileInfo(),this.inline,f)}catch(k){throw"number"!=typeof k.index&&(k.index=this.getIndex(),k.filename=this.fileInfo().filename),k}finally{c&&(a.strictMath=!1)}},i.prototype.makeImportant=function(){return new i(this.name,this.value,"!important",this.merge,this.getIndex(),this.fileInfo(),this.inline)},b.exports=i},{"./anonymous":48,"./keyword":68,"./node":73,"./value":83}],59:[function(a,b,c){var d=a("./node"),e=a("../contexts"),f=a("../utils"),g=function(a,b){this.ruleset=a,this.frames=b,this.setParent(this.ruleset,this)};g.prototype=new d,g.prototype.type="DetachedRuleset",g.prototype.evalFirst=!0,g.prototype.accept=function(a){this.ruleset=a.visit(this.ruleset)},g.prototype.eval=function(a){var b=this.frames||f.copyArray(a.frames);return new g(this.ruleset,b)},g.prototype.callEval=function(a){return this.ruleset.eval(this.frames?new e.Eval(a,this.frames.concat(a.frames)):a)},b.exports=g},{"../contexts":12,"../utils":86,"./node":73}],60:[function(a,b,c){var d=a("./node"),e=a("../data/unit-conversions"),f=a("./unit"),g=a("./color"),h=function(a,b){if(this.value=parseFloat(a),isNaN(this.value))throw new Error("Dimension is not a number.");this.unit=b&&b instanceof f?b:new f(b?[b]:void 0),this.setParent(this.unit,this)};h.prototype=new d,h.prototype.type="Dimension",h.prototype.accept=function(a){this.unit=a.visit(this.unit)},h.prototype.eval=function(a){return this},h.prototype.toColor=function(){return new g([this.value,this.value,this.value])},h.prototype.genCSS=function(a,b){if(a&&a.strictUnits&&!this.unit.isSingular())throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: "+this.unit.toString());var c=this.fround(a,this.value),d=String(c);if(0!==c&&c<1e-6&&c>-1e-6&&(d=c.toFixed(20).replace(/0+$/,"")),a&&a.compress){if(0===c&&this.unit.isLength())return void b.add(d);c>0&&c<1&&(d=d.substr(1))}b.add(d),this.unit.genCSS(a,b)},h.prototype.operate=function(a,b,c){var d=this._operate(a,b,this.value,c.value),e=this.unit.clone();if("+"===b||"-"===b)if(0===e.numerator.length&&0===e.denominator.length)e=c.unit.clone(),this.unit.backupUnit&&(e.backupUnit=this.unit.backupUnit);else if(0===c.unit.numerator.length&&0===e.denominator.length);else{if(c=c.convertTo(this.unit.usedUnits()),a.strictUnits&&c.unit.toString()!==e.toString())throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '"+e.toString()+"' and '"+c.unit.toString()+"'.");d=this._operate(a,b,this.value,c.value)}else"*"===b?(e.numerator=e.numerator.concat(c.unit.numerator).sort(),e.denominator=e.denominator.concat(c.unit.denominator).sort(),e.cancel()):"/"===b&&(e.numerator=e.numerator.concat(c.unit.denominator).sort(),e.denominator=e.denominator.concat(c.unit.numerator).sort(),e.cancel());return new h(d,e)},h.prototype.compare=function(a){var b,c;if(a instanceof h){if(this.unit.isEmpty()||a.unit.isEmpty())b=this,c=a;else if(b=this.unify(),c=a.unify(),0!==b.unit.compare(c.unit))return;return d.numericCompare(b.value,c.value)}},h.prototype.unify=function(){return this.convertTo({length:"px",duration:"s",angle:"rad"})},h.prototype.convertTo=function(a){var b,c,d,f,g,i=this.value,j=this.unit.clone(),k={};if("string"==typeof a){for(b in e)e[b].hasOwnProperty(a)&&(k={},k[b]=a);a=k}g=function(a,b){return d.hasOwnProperty(a)?(b?i/=d[a]/d[f]:i*=d[a]/d[f],f):a};for(c in a)a.hasOwnProperty(c)&&(f=a[c],d=e[c],j.map(g));return j.cancel(),new h(i,j)},b.exports=h},{"../data/unit-conversions":15,"./color":53,"./node":73,"./unit":81}],61:[function(a,b,c){var d=a("./node"),e=a("./paren"),f=a("./combinator"),g=function(a,b,c,d,e){this.combinator=a instanceof f?a:new f(a),this.value="string"==typeof b?b.trim():b?b:"",this._index=c,this._fileInfo=d,this.copyVisibilityInfo(e),this.setParent(this.combinator,this)};g.prototype=new d,g.prototype.type="Element",g.prototype.accept=function(a){var b=this.value;this.combinator=a.visit(this.combinator),"object"==typeof b&&(this.value=a.visit(b))},g.prototype.eval=function(a){return new g(this.combinator,this.value.eval?this.value.eval(a):this.value,this.getIndex(),this.fileInfo(),this.visibilityInfo())},g.prototype.clone=function(){return new g(this.combinator,this.value,this.getIndex(),this.fileInfo(),this.visibilityInfo())},g.prototype.genCSS=function(a,b){b.add(this.toCSS(a),this.fileInfo(),this.getIndex())},g.prototype.toCSS=function(a){a=a||{};var b=this.value,c=a.firstSelector;return b instanceof e&&(a.firstSelector=!0),b=b.toCSS?b.toCSS(a):b,a.firstSelector=c,""===b&&"&"===this.combinator.value.charAt(0)?"":this.combinator.toCSS(a)+b},b.exports=g},{"./combinator":54,"./node":73,"./paren":75}],62:[function(a,b,c){var d=a("./node"),e=a("./paren"),f=a("./comment"),g=function(a){if(this.value=a,!a)throw new Error("Expression requires an array parameter")};g.prototype=new d,g.prototype.type="Expression",g.prototype.accept=function(a){this.value=a.visitArray(this.value)},g.prototype.eval=function(a){var b,c=this.parens&&!this.parensInOp,d=!1;return c&&a.inParenthesis(),this.value.length>1?b=new g(this.value.map(function(b){return b.eval(a)})):1===this.value.length?(this.value[0].parens&&!this.value[0].parensInOp&&(d=!0),b=this.value[0].eval(a)):b=this,c&&a.outOfParenthesis(),this.parens&&this.parensInOp&&!a.isMathOn()&&!d&&(b=new e(b)),b},g.prototype.genCSS=function(a,b){for(var c=0;c<this.value.length;c++)this.value[c].genCSS(a,b),c+1<this.value.length&&b.add(" ")},g.prototype.throwAwayComments=function(){this.value=this.value.filter(function(a){return!(a instanceof f)})},b.exports=g},{"./comment":55,"./node":73,"./paren":75}],63:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=function g(a,b,c,d,e){switch(this.selector=a,this.option=b,this.object_id=g.next_id++,this.parent_ids=[this.object_id],this._index=c,this._fileInfo=d,this.copyVisibilityInfo(e),this.allowRoot=!0,b){case"all":this.allowBefore=!0,this.allowAfter=!0;break;default:this.allowBefore=!1,this.allowAfter=!1}this.setParent(this.selector,this)};f.next_id=0,f.prototype=new d,f.prototype.type="Extend",f.prototype.accept=function(a){this.selector=a.visit(this.selector)},f.prototype.eval=function(a){return new f(this.selector.eval(a),this.option,this.getIndex(),this.fileInfo(),this.visibilityInfo())},f.prototype.clone=function(a){return new f(this.selector,this.option,this.getIndex(),this.fileInfo(),this.visibilityInfo())},f.prototype.findSelfSelectors=function(a){var b,c,d=[];for(b=0;b<a.length;b++)c=a[b].elements,b>0&&c.length&&""===c[0].combinator.value&&(c[0].combinator.value=" "),d=d.concat(a[b].elements);this.selfSelectors=[new e(d)],this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo())},b.exports=f},{"./node":73,"./selector":79}],64:[function(a,b,c){var d=a("./node"),e=a("./media"),f=a("./url"),g=a("./quoted"),h=a("./ruleset"),i=a("./anonymous"),j=a("../utils"),k=a("../less-error"),l=function(a,b,c,d,e,f){if(this.options=c,this._index=d,this._fileInfo=e,this.path=a,this.features=b,this.allowRoot=!0,void 0!==this.options.less||this.options.inline)this.css=!this.options.less||this.options.inline;else{var g=this.getPath();g&&/[#\.\&\?]css([\?;].*)?$/.test(g)&&(this.css=!0)}this.copyVisibilityInfo(f),this.setParent(this.features,this),this.setParent(this.path,this)};l.prototype=new d,l.prototype.type="Import",l.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.path=a.visit(this.path),this.options.isPlugin||this.options.inline||!this.root||(this.root=a.visit(this.root))},l.prototype.genCSS=function(a,b){this.css&&void 0===this.path._fileInfo.reference&&(b.add("@import ",this._fileInfo,this._index),this.path.genCSS(a,b),this.features&&(b.add(" "),this.features.genCSS(a,b)),b.add(";"))},l.prototype.getPath=function(){return this.path instanceof f?this.path.value.value:this.path.value},l.prototype.isVariableImport=function(){var a=this.path;return a instanceof f&&(a=a.value),!(a instanceof g)||a.containsVariables()},l.prototype.evalForImport=function(a){var b=this.path;return b instanceof f&&(b=b.value),new l(b.eval(a),this.features,this.options,this._index,this._fileInfo,this.visibilityInfo())},l.prototype.evalPath=function(a){var b=this.path.eval(a),c=this._fileInfo&&this._fileInfo.rootpath;if(!(b instanceof f)){if(c){var d=b.value;d&&a.isPathRelative(d)&&(b.value=c+d)}b.value=a.normalizePath(b.value)}return b},l.prototype.eval=function(a){var b=this.doEval(a);return(this.options.reference||this.blocksVisibility())&&(b.length||0===b.length?b.forEach(function(a){
+a.addVisibilityBlock()}):b.addVisibilityBlock()),b},l.prototype.doEval=function(a){var b,c,d=this.features&&this.features.eval(a);if(this.options.isPlugin){if(this.root&&this.root.eval)try{this.root.eval(a)}catch(f){throw f.message="Plugin error during evaluation",new k(f,this.root.imports,this.root.filename)}return c=a.frames[0]&&a.frames[0].functionRegistry,c&&this.root&&this.root.functions&&c.addMultiple(this.root.functions),[]}if(this.skip&&("function"==typeof this.skip&&(this.skip=this.skip()),this.skip))return[];if(this.options.inline){var g=new i(this.root,0,{filename:this.importedFilename,reference:this.path._fileInfo&&this.path._fileInfo.reference},(!0),(!0));return this.features?new e([g],this.features.value):[g]}if(this.css){var m=new l(this.evalPath(a),d,this.options,this._index);if(!m.css&&this.error)throw this.error;return m}return b=new h(null,j.copyArray(this.root.rules)),b.evalImports(a),this.features?new e(b.rules,this.features.value):b.rules},b.exports=l},{"../less-error":36,"../utils":86,"./anonymous":48,"./media":69,"./node":73,"./quoted":77,"./ruleset":78,"./url":82}],65:[function(a,b,c){var d=Object.create(null);d.Node=a("./node"),d.Color=a("./color"),d.AtRule=a("./atrule"),d.DetachedRuleset=a("./detached-ruleset"),d.Operation=a("./operation"),d.Dimension=a("./dimension"),d.Unit=a("./unit"),d.Keyword=a("./keyword"),d.Variable=a("./variable"),d.Property=a("./property"),d.Ruleset=a("./ruleset"),d.Element=a("./element"),d.Attribute=a("./attribute"),d.Combinator=a("./combinator"),d.Selector=a("./selector"),d.Quoted=a("./quoted"),d.Expression=a("./expression"),d.Declaration=a("./declaration"),d.Call=a("./call"),d.URL=a("./url"),d.Import=a("./import"),d.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},d.Comment=a("./comment"),d.Anonymous=a("./anonymous"),d.Value=a("./value"),d.JavaScript=a("./javascript"),d.Assignment=a("./assignment"),d.Condition=a("./condition"),d.Paren=a("./paren"),d.Media=a("./media"),d.UnicodeDescriptor=a("./unicode-descriptor"),d.Negative=a("./negative"),d.Extend=a("./extend"),d.VariableCall=a("./variable-call"),b.exports=d},{"./anonymous":48,"./assignment":49,"./atrule":50,"./attribute":51,"./call":52,"./color":53,"./combinator":54,"./comment":55,"./condition":56,"./declaration":58,"./detached-ruleset":59,"./dimension":60,"./element":61,"./expression":62,"./extend":63,"./import":64,"./javascript":66,"./keyword":68,"./media":69,"./mixin-call":70,"./mixin-definition":71,"./negative":72,"./node":73,"./operation":74,"./paren":75,"./property":76,"./quoted":77,"./ruleset":78,"./selector":79,"./unicode-descriptor":80,"./unit":81,"./url":82,"./value":83,"./variable":85,"./variable-call":84}],66:[function(a,b,c){var d=a("./js-eval-node"),e=a("./dimension"),f=a("./quoted"),g=a("./anonymous"),h=function(a,b,c,d){this.escaped=b,this.expression=a,this._index=c,this._fileInfo=d};h.prototype=new d,h.prototype.type="JavaScript",h.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a);return"number"==typeof b?new e(b):"string"==typeof b?new f('"'+b+'"',b,this.escaped,this._index):new g(Array.isArray(b)?b.join(", "):b)},b.exports=h},{"./anonymous":48,"./dimension":60,"./js-eval-node":67,"./quoted":77}],67:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(){};f.prototype=new d,f.prototype.evaluateJavaScript=function(a,b){var c,d=this,f={};if(!b.javascriptEnabled)throw{message:"Inline JavaScript is not enabled. Is it set in your options?",filename:this.fileInfo().filename,index:this.getIndex()};a=a.replace(/@\{([\w-]+)\}/g,function(a,c){return d.jsify(new e("@"+c,d.getIndex(),d.fileInfo()).eval(b))});try{a=new Function("return ("+a+")")}catch(g){throw{message:"JavaScript evaluation error: "+g.message+" from `"+a+"`",filename:this.fileInfo().filename,index:this.getIndex()}}var h=b.frames[0].variables();for(var i in h)h.hasOwnProperty(i)&&(f[i.slice(1)]={value:h[i].value,toJS:function(){return this.value.eval(b).toCSS()}});try{c=a.call(f)}catch(g){throw{message:"JavaScript evaluation error: '"+g.name+": "+g.message.replace(/["]/g,"'")+"'",filename:this.fileInfo().filename,index:this.getIndex()}}return c},f.prototype.jsify=function(a){return Array.isArray(a.value)&&a.value.length>1?"["+a.value.map(function(a){return a.toCSS()}).join(", ")+"]":a.toCSS()},b.exports=f},{"./node":73,"./variable":85}],68:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Keyword",e.prototype.genCSS=function(a,b){if("%"===this.value)throw{type:"Syntax",message:"Invalid % without number"};b.add(this.value)},e.True=new e("true"),e.False=new e("false"),b.exports=e},{"./node":73}],69:[function(a,b,c){var d=a("./ruleset"),e=a("./value"),f=a("./selector"),g=a("./anonymous"),h=a("./expression"),i=a("./atrule"),j=a("../utils"),k=function(a,b,c,g,h){this._index=c,this._fileInfo=g;var i=new f([],null,null,this._index,this._fileInfo).createEmptySelectors();this.features=new e(b),this.rules=[new d(i,a)],this.rules[0].allowImports=!0,this.copyVisibilityInfo(h),this.allowRoot=!0,this.setParent(i,this),this.setParent(this.features,this),this.setParent(this.rules,this)};k.prototype=new i,k.prototype.type="Media",k.prototype.isRulesetLike=function(){return!0},k.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.rules&&(this.rules=a.visitArray(this.rules))},k.prototype.genCSS=function(a,b){b.add("@media ",this._fileInfo,this._index),this.features.genCSS(a,b),this.outputRuleset(a,b,this.rules)},k.prototype.eval=function(a){a.mediaBlocks||(a.mediaBlocks=[],a.mediaPath=[]);var b=new k(null,[],this._index,this._fileInfo,this.visibilityInfo());return this.debugInfo&&(this.rules[0].debugInfo=this.debugInfo,b.debugInfo=this.debugInfo),b.features=this.features.eval(a),a.mediaPath.push(b),a.mediaBlocks.push(b),this.rules[0].functionRegistry=a.frames[0].functionRegistry.inherit(),a.frames.unshift(this.rules[0]),b.rules=[this.rules[0].eval(a)],a.frames.shift(),a.mediaPath.pop(),0===a.mediaPath.length?b.evalTop(a):b.evalNested(a)},k.prototype.evalTop=function(a){var b=this;if(a.mediaBlocks.length>1){var c=new f([],null,null,this.getIndex(),this.fileInfo()).createEmptySelectors();b=new d(c,a.mediaBlocks),b.multiMedia=!0,b.copyVisibilityInfo(this.visibilityInfo()),this.setParent(b,this)}return delete a.mediaBlocks,delete a.mediaPath,b},k.prototype.evalNested=function(a){var b,c,f=a.mediaPath.concat([this]);for(b=0;b<f.length;b++)c=f[b].features instanceof e?f[b].features.value:f[b].features,f[b]=Array.isArray(c)?c:[c];return this.features=new e(this.permute(f).map(function(a){for(a=a.map(function(a){return a.toCSS?a:new g(a)}),b=a.length-1;b>0;b--)a.splice(b,0,new g("and"));return new h(a)})),this.setParent(this.features,this),new d([],[])},k.prototype.permute=function(a){if(0===a.length)return[];if(1===a.length)return a[0];for(var b=[],c=this.permute(a.slice(1)),d=0;d<c.length;d++)for(var e=0;e<a[0].length;e++)b.push([a[0][e]].concat(c[d]));return b},k.prototype.bubbleSelectors=function(a){a&&(this.rules=[new d(j.copyArray(a),[this.rules[0]])],this.setParent(this.rules,this))},b.exports=k},{"../utils":86,"./anonymous":48,"./atrule":50,"./expression":62,"./ruleset":78,"./selector":79,"./value":83}],70:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./mixin-definition"),g=a("../functions/default"),h=function(a,b,c,d,f){this.selector=new e(a),this.arguments=b||[],this._index=c,this._fileInfo=d,this.important=f,this.allowRoot=!0,this.setParent(this.selector,this)};h.prototype=new d,h.prototype.type="MixinCall",h.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments.length&&(this.arguments=a.visitArray(this.arguments))},h.prototype.eval=function(a){function b(b,c){var d,e,f;for(d=0;d<2;d++){for(x[d]=!0,g.value(d),e=0;e<c.length&&x[d];e++)f=c[e],f.matchCondition&&(x[d]=x[d]&&f.matchCondition(null,a));b.matchCondition&&(x[d]=x[d]&&b.matchCondition(t,a))}return x[0]||x[1]?x[0]!=x[1]?x[1]?A:B:z:y}var c,d,e,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=[],v=!1,w=[],x=[],y=-1,z=0,A=1,B=2;for(j=0;j<this.arguments.length;j++)if(h=this.arguments[j],i=h.value.eval(a),h.expand&&Array.isArray(i.value))for(i=i.value,k=0;k<i.length;k++)t.push({value:i[k]});else t.push({name:h.name,value:i});for(s=function(b){return b.matchArgs(null,a)},j=0;j<a.frames.length;j++)if((c=a.frames[j].find(this.selector,null,s)).length>0){for(n=!0,k=0;k<c.length;k++){for(d=c[k].rule,e=c[k].path,m=!1,l=0;l<a.frames.length;l++)if(!(d instanceof f)&&d===(a.frames[l].originalRuleset||a.frames[l])){m=!0;break}m||d.matchArgs(t,a)&&(o={mixin:d,group:b(d,e)},o.group!==y&&w.push(o),v=!0)}for(g.reset(),q=[0,0,0],k=0;k<w.length;k++)q[w[k].group]++;if(q[z]>0)p=B;else if(p=A,q[A]+q[B]>1)throw{type:"Runtime",message:"Ambiguous use of `default()` found when matching for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename};for(k=0;k<w.length;k++)if(o=w[k].group,o===z||o===p)try{d=w[k].mixin,d instanceof f||(r=d.originalRuleset||d,d=new f("",[],d.rules,null,(!1),null,r.visibilityInfo()),d.originalRuleset=r);var C=d.evalCall(a,t,this.important).rules;this._setVisibilityToReplacement(C),Array.prototype.push.apply(u,C)}catch(D){throw{message:D.message,index:this.getIndex(),filename:this.fileInfo().filename,stack:D.stack}}if(v)return u}throw n?{type:"Runtime",message:"No matching definition was found for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename}:{type:"Name",message:this.selector.toCSS().trim()+" is undefined",index:this.getIndex(),filename:this.fileInfo().filename}},h.prototype._setVisibilityToReplacement=function(a){var b,c;if(this.blocksVisibility())for(b=0;b<a.length;b++)c=a[b],c.addVisibilityBlock()},h.prototype.format=function(a){return this.selector.toCSS().trim()+"("+(a?a.map(function(a){var b="";return a.name&&(b+=a.name+":"),b+=a.value.toCSS?a.value.toCSS():"???"}).join(", "):"")+")"},b.exports=h},{"../functions/default":24,"./mixin-definition":71,"./node":73,"./selector":79}],71:[function(a,b,c){var d=a("./selector"),e=a("./element"),f=a("./ruleset"),g=a("./declaration"),h=a("./expression"),i=a("../contexts"),j=a("../utils"),k=function(a,b,c,f,g,h,i){this.name=a,this.selectors=[new d([new e(null,a,this._index,this._fileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=c,this._lookups={};var j=[];this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:(j.push(b.name),a)},0),this.optionalParameters=j,this.frames=h,this.copyVisibilityInfo(i),this.allowRoot=!0};k.prototype=new f,k.prototype.type="MixinDefinition",k.prototype.evalFirst=!0,k.prototype.accept=function(a){this.params&&this.params.length&&(this.params=a.visitArray(this.params)),this.rules=a.visitArray(this.rules),this.condition&&(this.condition=a.visit(this.condition))},k.prototype.evalParams=function(a,b,c,d){var e,k,l,m,n,o,p,q,r=new f(null,null),s=j.copyArray(this.params),t=0;if(b.frames&&b.frames[0]&&b.frames[0].functionRegistry&&(r.functionRegistry=b.frames[0].functionRegistry.inherit()),b=new i.Eval(b,[r].concat(b.frames)),c)for(c=j.copyArray(c),t=c.length,l=0;l<t;l++)if(k=c[l],o=k&&k.name){for(p=!1,m=0;m<s.length;m++)if(!d[m]&&o===s[m].name){d[m]=k.value.eval(a),r.prependRule(new g(o,k.value.eval(a))),p=!0;break}if(p){c.splice(l,1),l--;continue}throw{type:"Runtime",message:"Named argument for "+this.name+" "+c[l].name+" not found"}}for(q=0,l=0;l<s.length;l++)if(!d[l]){if(k=c&&c[q],o=s[l].name)if(s[l].variadic){for(e=[],m=q;m<t;m++)e.push(c[m].value.eval(a));r.prependRule(new g(o,new h(e).eval(a)))}else{if(n=k&&k.value)n=n.eval(a);else{if(!s[l].value)throw{type:"Runtime",message:"wrong number of arguments for "+this.name+" ("+t+" for "+this.arity+")"};n=s[l].value.eval(b),r.resetCache()}r.prependRule(new g(o,n)),d[l]=n}if(s[l].variadic&&c)for(m=q;m<t;m++)d[m]=c[m].value.eval(a);q++}return r},k.prototype.makeImportant=function(){var a=this.rules?this.rules.map(function(a){return a.makeImportant?a.makeImportant(!0):a}):this.rules,b=new k(this.name,this.params,a,this.condition,this.variadic,this.frames);return b},k.prototype.eval=function(a){return new k(this.name,this.params,this.rules,this.condition,this.variadic,this.frames||j.copyArray(a.frames))},k.prototype.evalCall=function(a,b,c){var d,e,k=[],l=this.frames?this.frames.concat(a.frames):a.frames,m=this.evalParams(a,new i.Eval(a,l),b,k);return m.prependRule(new g("@arguments",new h(k).eval(a))),d=j.copyArray(this.rules),e=new f(null,d),e.originalRuleset=this,e=e.eval(new i.Eval(a,[this,m].concat(l))),c&&(e=e.makeImportant()),e},k.prototype.matchCondition=function(a,b){return!(this.condition&&!this.condition.eval(new i.Eval(b,[this.evalParams(b,new i.Eval(b,this.frames?this.frames.concat(b.frames):b.frames),a,[])].concat(this.frames||[]).concat(b.frames))))},k.prototype.matchArgs=function(a,b){var c,d=a&&a.length||0,e=this.optionalParameters,f=a?a.reduce(function(a,b){return e.indexOf(b.name)<0?a+1:a},0):0;if(this.variadic){if(f<this.required-1)return!1}else{if(f<this.required)return!1;if(d>this.params.length)return!1}c=Math.min(f,this.arity);for(var g=0;g<c;g++)if(!this.params[g].name&&!this.params[g].variadic&&a[g].value.eval(b).toCSS()!=this.params[g].value.eval(b).toCSS())return!1;return!0},b.exports=k},{"../contexts":12,"../utils":86,"./declaration":58,"./element":61,"./expression":62,"./ruleset":78,"./selector":79}],72:[function(a,b,c){var d=a("./node"),e=a("./operation"),f=a("./dimension"),g=function(a){this.value=a};g.prototype=new d,g.prototype.type="Negative",g.prototype.genCSS=function(a,b){b.add("-"),this.value.genCSS(a,b)},g.prototype.eval=function(a){return a.isMathOn()?new e("*",[new f((-1)),this.value]).eval(a):new g(this.value.eval(a))},b.exports=g},{"./dimension":60,"./node":73,"./operation":74}],73:[function(a,b,c){var d=function(){this.parent=null,this.visibilityBlocks=void 0,this.nodeVisible=void 0,this.rootNode=null,this.parsed=null;var a=this;Object.defineProperty(this,"currentFileInfo",{get:function(){return a.fileInfo()}}),Object.defineProperty(this,"index",{get:function(){return a.getIndex()}})};d.prototype.setParent=function(a,b){function c(a){a&&a instanceof d&&(a.parent=b)}Array.isArray(a)?a.forEach(c):c(a)},d.prototype.getIndex=function(){return this._index||this.parent&&this.parent.getIndex()||0},d.prototype.fileInfo=function(){return this._fileInfo||this.parent&&this.parent.fileInfo()||{}},d.prototype.isRulesetLike=function(){return!1},d.prototype.toCSS=function(a){var b=[];return this.genCSS(a,{add:function(a,c,d){b.push(a)},isEmpty:function(){return 0===b.length}}),b.join("")},d.prototype.genCSS=function(a,b){b.add(this.value)},d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.eval=function(){return this},d.prototype._operate=function(a,b,c,d){switch(b){case"+":return c+d;case"-":return c-d;case"*":return c*d;case"/":return c/d}},d.prototype.fround=function(a,b){var c=a&&a.numPrecision;return c?Number((b+2e-16).toFixed(c)):b},d.compare=function(a,b){if(a.compare&&"Quoted"!==b.type&&"Anonymous"!==b.type)return a.compare(b);if(b.compare)return-b.compare(a);if(a.type===b.type){if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length===b.length){for(var c=0;c<a.length;c++)if(0!==d.compare(a[c],b[c]))return;return 0}}},d.numericCompare=function(a,b){return a<b?-1:a===b?0:a>b?1:void 0},d.prototype.blocksVisibility=function(){return null==this.visibilityBlocks&&(this.visibilityBlocks=0),0!==this.visibilityBlocks},d.prototype.addVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks+1},d.prototype.removeVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks-1},d.prototype.ensureVisibility=function(){this.nodeVisible=!0},d.prototype.ensureInvisibility=function(){this.nodeVisible=!1},d.prototype.isVisible=function(){return this.nodeVisible},d.prototype.visibilityInfo=function(){return{visibilityBlocks:this.visibilityBlocks,nodeVisible:this.nodeVisible}},d.prototype.copyVisibilityInfo=function(a){a&&(this.visibilityBlocks=a.visibilityBlocks,this.nodeVisible=a.nodeVisible)},b.exports=d},{}],74:[function(a,b,c){var d=a("./node"),e=a("./color"),f=a("./dimension"),g=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};g.prototype=new d,g.prototype.type="Operation",g.prototype.accept=function(a){this.operands=a.visit(this.operands)},g.prototype.eval=function(a){var b=this.operands[0].eval(a),c=this.operands[1].eval(a);if(a.isMathOn()){if(b instanceof f&&c instanceof e&&(b=b.toColor()),c instanceof f&&b instanceof e&&(c=c.toColor()),!b.operate)throw{type:"Operation",message:"Operation on an invalid type"};return b.operate(a,this.op,c)}return new g(this.op,[b,c],this.isSpaced)},g.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" "),this.operands[1].genCSS(a,b)},b.exports=g},{"./color":53,"./dimension":60,"./node":73}],75:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Paren",e.prototype.genCSS=function(a,b){b.add("("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){return new e(this.value.eval(a))},b.exports=e},{"./node":73}],76:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=function(a,b,c){this.name=a,this._index=b,this._fileInfo=c};f.prototype=new d,f.prototype.type="Property",f.prototype.eval=function(a){var b,c=this.name,d=a.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;if(this.evaluating)throw{type:"Name",message:"Recursive property reference for "+c,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,b=this.find(a.frames,function(b){var f,g=b.property(c);if(g){for(var h=0;h<g.length;h++)f=g[h],g[h]=new e(f.name,f.value,f.important,f.merge,f.index,f.currentFileInfo,f.inline,f.variable);if(d(g),f=g[g.length-1],f.important){var i=a.importantScope[a.importantScope.length-1];i.important=f.important}return f=f.value.eval(a)}}))return this.evaluating=!1,b;throw{type:"Name",message:"Property '"+c+"' is undefined",filename:this.currentFileInfo.filename,index:this.index}},f.prototype.find=function(a,b){for(var c,d=0;d<a.length;d++)if(c=b.call(a,a[d]))return c;return null},b.exports=f},{"./declaration":58,"./node":73}],77:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=a("./property"),g=function(a,b,c,d,e){this.escaped=null==c||c,this.value=b||"",this.quote=a.charAt(0),this._index=d,this._fileInfo=e};g.prototype=new d,g.prototype.type="Quoted",g.prototype.genCSS=function(a,b){this.escaped||b.add(this.quote,this.fileInfo(),this.getIndex()),b.add(this.value),this.escaped||b.add(this.quote)},g.prototype.containsVariables=function(){return this.value.match(/@\{([\w-]+)\}/)},g.prototype.eval=function(a){function b(a,b,c){var d=a;do a=d,d=a.replace(b,c);while(a!==d);return d}var c=this,d=this.value,h=function(b,d){var f=new e("@"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return f instanceof g?f.value:f.toCSS()},i=function(b,d){var e=new f("$"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return e instanceof g?e.value:e.toCSS()};return d=b(d,/@\{([\w-]+)\}/g,h),d=b(d,/\$\{([\w-]+)\}/g,i),new g(this.quote+d+this.quote,d,this.escaped,this.getIndex(),this.fileInfo())},g.prototype.compare=function(a){return"Quoted"!==a.type||this.escaped||a.escaped?a.toCSS&&this.toCSS()===a.toCSS()?0:void 0:d.numericCompare(this.value,a.value)},b.exports=g},{"./node":73,"./property":76,"./variable":85}],78:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=a("./keyword"),g=a("./comment"),h=a("./paren"),i=a("./selector"),j=a("./element"),k=a("./anonymous"),l=a("../contexts"),m=a("../functions/function-registry"),n=a("../functions/default"),o=a("./debug-info"),p=a("../utils"),q=function(a,b,c,d){this.selectors=a,this.rules=b,this._lookups={},this._variables=null,this._properties=null,this.strictImports=c,this.copyVisibilityInfo(d),this.allowRoot=!0,this.setParent(this.selectors,this),this.setParent(this.rules,this)};q.prototype=new d,q.prototype.type="Ruleset",q.prototype.isRuleset=!0,q.prototype.isRulesetLike=function(){return!0},q.prototype.accept=function(a){this.paths?this.paths=a.visitArray(this.paths,!0):this.selectors&&(this.selectors=a.visitArray(this.selectors)),this.rules&&this.rules.length&&(this.rules=a.visitArray(this.rules))},q.prototype.eval=function(a){var b,c,f,g,h=this.selectors,i=!1;if(h&&(c=h.length)){for(b=new Array(c),n.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),g=0;g<c;g++)f=h[g].eval(a),b[g]=f,f.evaldCondition&&(i=!0);n.reset()}else i=!0;var j,k,l=this.rules?p.copyArray(this.rules):null,o=new q(b,l,this.strictImports,this.visibilityInfo());o.originalRuleset=this,o.root=this.root,o.firstRoot=this.firstRoot,o.allowImports=this.allowImports,this.debugInfo&&(o.debugInfo=this.debugInfo),i||(l.length=0),o.functionRegistry=function(a){for(var b,c=0,d=a.length;c!==d;++c)if(b=a[c].functionRegistry)return b;return m}(a.frames).inherit();var r=a.frames;r.unshift(o);var s=a.selectors;s||(a.selectors=s=[]),s.unshift(this.selectors),(o.root||o.allowImports||!o.strictImports)&&o.evalImports(a);var t=o.rules;for(g=0;j=t[g];g++)j.evalFirst&&(t[g]=j.eval(a));var u=a.mediaBlocks&&a.mediaBlocks.length||0;for(g=0;j=t[g];g++)"MixinCall"===j.type?(l=j.eval(a).filter(function(a){return!(a instanceof e&&a.variable)||!o.variable(a.name)}),t.splice.apply(t,[g,1].concat(l)),g+=l.length-1,o.resetCache()):"VariableCall"===j.type&&(l=j.eval(a).rules.filter(function(a){return!(a instanceof e&&a.variable)}),t.splice.apply(t,[g,1].concat(l)),g+=l.length-1,o.resetCache());for(g=0;j=t[g];g++)j.evalFirst||(t[g]=j=j.eval?j.eval(a):j);for(g=0;j=t[g];g++)if(j instanceof q&&j.selectors&&1===j.selectors.length&&j.selectors[0].isJustParentSelector()){t.splice(g--,1);for(var v=0;k=j.rules[v];v++)k instanceof d&&(k.copyVisibilityInfo(j.visibilityInfo()),k instanceof e&&k.variable||t.splice(++g,0,k))}if(r.shift(),s.shift(),a.mediaBlocks)for(g=u;g<a.mediaBlocks.length;g++)a.mediaBlocks[g].bubbleSelectors(b);return o},q.prototype.evalImports=function(a){var b,c,d=this.rules;if(d)for(b=0;b<d.length;b++)"Import"===d[b].type&&(c=d[b].eval(a),c&&(c.length||0===c.length)?(d.splice.apply(d,[b,1].concat(c)),b+=c.length-1):d.splice(b,1,c),this.resetCache())},q.prototype.makeImportant=function(){var a=new q(this.selectors,this.rules.map(function(a){return a.makeImportant?a.makeImportant():a}),this.strictImports,this.visibilityInfo());return a},q.prototype.matchArgs=function(a){return!a||0===a.length},q.prototype.matchCondition=function(a,b){var c=this.selectors[this.selectors.length-1];return!!c.evaldCondition&&!(c.condition&&!c.condition.eval(new l.Eval(b,b.frames)))},q.prototype.resetCache=function(){this._rulesets=null,this._variables=null,this._properties=null,this._lookups={}},q.prototype.variables=function(){return this._variables||(this._variables=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable===!0&&(a[b.name]=b),"Import"===b.type&&b.root&&b.root.variables){var c=b.root.variables();for(var d in c)c.hasOwnProperty(d)&&(a[d]=c[d])}return a},{}):{}),this._variables},q.prototype.properties=function(){return this._properties||(this._properties=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable!==!0){var c=1===b.name.length&&b.name[0]instanceof f?b.name[0].value:b.name;a["$"+c]?a["$"+c].push(b):a["$"+c]=[b]}return a},{}):{}),this._properties},q.prototype.variable=function(a){var b=this.variables()[a];if(b)return this.parseValue(b)},q.prototype.property=function(a){var b=this.properties()[a];if(b)return this.parseValue(b)},q.prototype.parseValue=function(a){function b(a){return a.value instanceof k&&!a.parsed?(this.parse.parseNode(a.value.value,["value","important"],a.value.getIndex(),a.fileInfo(),function(b,c){b&&(a.parsed=!0),c&&(a.value=c[0],a.important=c[1]||"",a.parsed=!0)}),a):a}var c=this;if(Array.isArray(a)){var d=[];return a.forEach(function(a){d.push(b.call(c,a))}),d}return b.call(c,a)},q.prototype.rulesets=function(){if(!this.rules)return[];var a,b,c=[],d=this.rules;for(a=0;b=d[a];a++)b.isRuleset&&c.push(b);return c},q.prototype.prependRule=function(a){var b=this.rules;b?b.unshift(a):this.rules=[a],this.setParent(a,this)},q.prototype.find=function(a,b,c){b=b||this;var d,e,f=[],g=a.toCSS();return g in this._lookups?this._lookups[g]:(this.rulesets().forEach(function(g){if(g!==b)for(var h=0;h<g.selectors.length;h++)if(d=a.match(g.selectors[h])){if(a.elements.length>d){if(!c||c(g)){e=g.find(new i(a.elements.slice(d)),b,c);for(var j=0;j<e.length;++j)e[j].path.push(g);Array.prototype.push.apply(f,e)}}else f.push({rule:g,path:[]});break}}),this._lookups[g]=f,f)},q.prototype.genCSS=function(a,b){var c,d,e,f,h,i=[],j=[];a.tabLevel=a.tabLevel||0,this.root||a.tabLevel++;var k,l=a.compress?"":Array(a.tabLevel+1).join("  "),m=a.compress?"":Array(a.tabLevel).join("  "),n=0,p=0;for(c=0;f=this.rules[c];c++)f instanceof g?(p===c&&p++,j.push(f)):f.isCharset&&f.isCharset()?(j.splice(n,0,f),n++,p++):"Import"===f.type?(j.splice(p,0,f),p++):j.push(f);if(j=i.concat(j),!this.root){e=o(a,this,m),e&&(b.add(e),b.add(m));var q,r=this.paths,s=r.length;for(k=a.compress?",":",\n"+m,c=0;c<s;c++)if(h=r[c],q=h.length)for(c>0&&b.add(k),a.firstSelector=!0,h[0].genCSS(a,b),a.firstSelector=!1,d=1;d<q;d++)h[d].genCSS(a,b);b.add((a.compress?"{":" {\n")+l)}for(c=0;f=j[c];c++){c+1===j.length&&(a.lastRule=!0);var t=a.lastRule;f.isRulesetLike(f)&&(a.lastRule=!1),f.genCSS?f.genCSS(a,b):f.value&&b.add(f.value.toString()),a.lastRule=t,!a.lastRule&&f.isVisible()?b.add(a.compress?"":"\n"+l):a.lastRule=!1}this.root||(b.add(a.compress?"}":"\n"+m+"}"),a.tabLevel--),b.isEmpty()||a.compress||!this.firstRoot||b.add("\n")},q.prototype.joinSelectors=function(a,b,c){for(var d=0;d<c.length;d++)this.joinSelector(a,b,c[d])},q.prototype.joinSelector=function(a,b,c){function d(a,b){var c,d;if(0===a.length)c=new h(a[0]);else{var e=new Array(a.length);for(d=0;d<a.length;d++)e[d]=new j(null,a[d],b._index,b._fileInfo);c=new h(new i(e))}return c}function e(a,b){var c,d;return c=new j(null,a,b._index,b._fileInfo),d=new i([c])}function f(a,b,c,d){var e,f,g;if(e=[],a.length>0?(e=p.copyArray(a),f=e.pop(),g=d.createDerived(p.copyArray(f.elements))):g=d.createDerived([]),b.length>0){var h=c.combinator,i=b[0].elements[0];h.emptyOrWhitespace&&!i.combinator.emptyOrWhitespace&&(h=i.combinator),g.elements.push(new j(h,i.value,c._index,c._fileInfo)),g.elements=g.elements.concat(b[0].elements.slice(1))}if(0!==g.elements.length&&e.push(g),b.length>1){var k=b.slice(1);k=k.map(function(a){return a.createDerived(a.elements,[])}),e=e.concat(k)}return e}function g(a,b,c,d,e){var g;for(g=0;g<a.length;g++){var h=f(a[g],b,c,d);e.push(h)}return e}function k(a,b){var c,d;if(0!==a.length){if(0===b.length)return void b.push([new i(a)]);for(c=0;d=b[c];c++)d.length>0?d[d.length-1]=d[d.length-1].createDerived(d[d.length-1].elements.concat(a)):d.push(new i(a))}}function l(a,b,c){function m(a){var b;return a.value instanceof h?(b=a.value.value,b instanceof i?b:null):null}var n,o,p,q,r,s,t,u,v,w,x=!1;for(q=[],r=[[]],n=0;u=c.elements[n];n++)if("&"!==u.value){var y=m(u);if(null!=y){k(q,r);var z,A=[],B=[];for(z=l(A,b,y),x=x||z,p=0;p<A.length;p++){var C=e(d(A[p],u),u);g(r,[C],u,c,B)}r=B,q=[]}else q.push(u)}else{for(x=!0,s=[],k(q,r),o=0;o<r.length;o++)if(t=r[o],0===b.length)t.length>0&&t[0].elements.push(new j(u.combinator,"",u._index,u._fileInfo)),s.push(t);else for(p=0;p<b.length;p++){var D=f(t,b[p],u,c);s.push(D)}r=s,q=[]}for(k(q,r),n=0;n<r.length;n++)v=r[n].length,v>0&&(a.push(r[n]),w=r[n][v-1],r[n][v-1]=w.createDerived(w.elements,c.extendList));return x}function m(a,b){var c=b.createDerived(b.elements,b.extendList,b.evaldCondition);return c.copyVisibilityInfo(a),c}var n,o,q;if(o=[],q=l(o,b,c),!q)if(b.length>0)for(o=[],n=0;n<b.length;n++){var r=b[n].map(m.bind(this,c.visibilityInfo()));r.push(c),o.push(r)}else o=[[c]];for(n=0;n<o.length;n++)a.push(o[n])},b.exports=q},{"../contexts":12,"../functions/default":24,"../functions/function-registry":26,"../utils":86,"./anonymous":48,"./comment":55,"./debug-info":57,"./declaration":58,"./element":61,"./keyword":68,"./node":73,"./paren":75,"./selector":79}],79:[function(a,b,c){var d=a("./node"),e=a("./element"),f=a("../less-error"),g=function(a,b,c,d,e,f){this.extendList=b,this.condition=c,this.evaldCondition=!c,this._index=d,this._fileInfo=e,this.elements=this.getElements(a),this.mixinElements_=void 0,this.copyVisibilityInfo(f),this.setParent(this.elements,this)};g.prototype=new d,g.prototype.type="Selector",g.prototype.accept=function(a){this.elements&&(this.elements=a.visitArray(this.elements)),this.extendList&&(this.extendList=a.visitArray(this.extendList)),this.condition&&(this.condition=a.visit(this.condition))},g.prototype.createDerived=function(a,b,c){a=this.getElements(a);var d=new g(a,b||this.extendList,null,this.getIndex(),this.fileInfo(),this.visibilityInfo());return d.evaldCondition=null!=c?c:this.evaldCondition,d.mediaEmpty=this.mediaEmpty,d},g.prototype.getElements=function(a){return"string"==typeof a&&this.parse.parseNode(a,["selector"],this._index,this._fileInfo,function(b,c){if(b)throw new f({index:b.index,message:b.message},this.parse.imports,this._fileInfo.filename);a=c[0].elements}),a},g.prototype.createEmptySelectors=function(){var a=new e("","&",this._index,this._fileInfo),b=[new g([a],null,null,this._index,this._fileInfo)];return b[0].mediaEmpty=!0,b},g.prototype.match=function(a){var b,c,d=this.elements,e=d.length;if(a=a.mixinElements(),b=a.length,0===b||e<b)return 0;for(c=0;c<b;c++)if(d[c].value!==a[c])return 0;return b},g.prototype.mixinElements=function(){if(this.mixinElements_)return this.mixinElements_;var a=this.elements.map(function(a){return a.combinator.value+(a.value.value||a.value)}).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);return a?"&"===a[0]&&a.shift():a=[],this.mixinElements_=a},g.prototype.isJustParentSelector=function(){return!this.mediaEmpty&&1===this.elements.length&&"&"===this.elements[0].value&&(" "===this.elements[0].combinator.value||""===this.elements[0].combinator.value)},g.prototype.eval=function(a){var b=this.condition&&this.condition.eval(a),c=this.elements,d=this.extendList;return c=c&&c.map(function(b){return b.eval(a)}),d=d&&d.map(function(b){return b.eval(a)}),this.createDerived(c,d,b)},g.prototype.genCSS=function(a,b){var c,d;for(a&&a.firstSelector||""!==this.elements[0].combinator.value||b.add(" ",this.fileInfo(),this.getIndex()),c=0;c<this.elements.length;c++)d=this.elements[c],d.genCSS(a,b)},g.prototype.getIsOutput=function(){return this.evaldCondition},b.exports=g},{"../less-error":36,"./element":61,"./node":73}],80:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="UnicodeDescriptor",b.exports=e},{"./node":73}],81:[function(a,b,c){var d=a("./node"),e=a("../data/unit-conversions"),f=a("../utils"),g=function(a,b,c){this.numerator=a?f.copyArray(a).sort():[],this.denominator=b?f.copyArray(b).sort():[],c?this.backupUnit=c:a&&a.length&&(this.backupUnit=a[0])};g.prototype=new d,g.prototype.type="Unit",g.prototype.clone=function(){return new g(f.copyArray(this.numerator),f.copyArray(this.denominator),this.backupUnit)},g.prototype.genCSS=function(a,b){var c=a&&a.strictUnits;1===this.numerator.length?b.add(this.numerator[0]):!c&&this.backupUnit?b.add(this.backupUnit):!c&&this.denominator.length&&b.add(this.denominator[0])},g.prototype.toString=function(){var a,b=this.numerator.join("*");for(a=0;a<this.denominator.length;a++)b+="/"+this.denominator[a];return b},g.prototype.compare=function(a){return this.is(a.toString())?0:void 0},g.prototype.is=function(a){return this.toString().toUpperCase()===a.toUpperCase()},g.prototype.isLength=function(){return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/))},g.prototype.isEmpty=function(){return 0===this.numerator.length&&0===this.denominator.length;
+},g.prototype.isSingular=function(){return this.numerator.length<=1&&0===this.denominator.length},g.prototype.map=function(a){var b;for(b=0;b<this.numerator.length;b++)this.numerator[b]=a(this.numerator[b],!1);for(b=0;b<this.denominator.length;b++)this.denominator[b]=a(this.denominator[b],!0)},g.prototype.usedUnits=function(){var a,b,c,d={};b=function(b){return a.hasOwnProperty(b)&&!d[c]&&(d[c]=b),b};for(c in e)e.hasOwnProperty(c)&&(a=e[c],this.map(b));return d},g.prototype.cancel=function(){var a,b,c={};for(b=0;b<this.numerator.length;b++)a=this.numerator[b],c[a]=(c[a]||0)+1;for(b=0;b<this.denominator.length;b++)a=this.denominator[b],c[a]=(c[a]||0)-1;this.numerator=[],this.denominator=[];for(a in c)if(c.hasOwnProperty(a)){var d=c[a];if(d>0)for(b=0;b<d;b++)this.numerator.push(a);else if(d<0)for(b=0;b<-d;b++)this.denominator.push(a)}this.numerator.sort(),this.denominator.sort()},b.exports=g},{"../data/unit-conversions":15,"../utils":86,"./node":73}],82:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d){this.value=a,this._index=b,this._fileInfo=c,this.isEvald=d};e.prototype=new d,e.prototype.type="Url",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.genCSS=function(a,b){b.add("url("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){var b,c=this.value.eval(a);if(!this.isEvald&&(b=this.fileInfo()&&this.fileInfo().rootpath,b&&"string"==typeof c.value&&a.isPathRelative(c.value)&&(c.quote||(b=b.replace(/[\(\)'"\s]/g,function(a){return"\\"+a})),c.value=b+c.value),c.value=a.normalizePath(c.value),a.urlArgs&&!c.value.match(/^\s*data:/))){var d=c.value.indexOf("?")===-1?"?":"&",f=d+a.urlArgs;c.value.indexOf("#")!==-1?c.value=c.value.replace("#",f+"#"):c.value+=f}return new e(c,this.getIndex(),this.fileInfo(),(!0))},b.exports=e},{"./node":73}],83:[function(a,b,c){var d=a("./node"),e=function(a){if(!a)throw new Error("Value requires an array argument");this.value=Array.isArray(a)?a:[a]};e.prototype=new d,e.prototype.type="Value",e.prototype.accept=function(a){this.value&&(this.value=a.visitArray(this.value))},e.prototype.eval=function(a){return 1===this.value.length?this.value[0].eval(a):new e(this.value.map(function(b){return b.eval(a)}))},e.prototype.genCSS=function(a,b){var c;for(c=0;c<this.value.length;c++)this.value[c].genCSS(a,b),c+1<this.value.length&&b.add(a&&a.compress?",":", ")},b.exports=e},{"./node":73}],84:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(a){this.variable=a,this.allowRoot=!0};f.prototype=new d,f.prototype.type="VariableCall",f.prototype.eval=function(a){var b=new e(this.variable).eval(a);return b.callEval(a)},b.exports=f},{"./node":73,"./variable":85}],85:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.name=a,this._index=b,this._fileInfo=c};e.prototype=new d,e.prototype.type="Variable",e.prototype.eval=function(a){var b,c=this.name;if(0===c.indexOf("@@")&&(c="@"+new e(c.slice(1),this.getIndex(),this.fileInfo()).eval(a).value),this.evaluating)throw{type:"Name",message:"Recursive variable definition for "+c,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,b=this.find(a.frames,function(b){var d=b.variable(c);if(d){if(d.important){var e=a.importantScope[a.importantScope.length-1];e.important=d.important}return d.value.eval(a)}}))return this.evaluating=!1,b;throw{type:"Name",message:"variable "+c+" is undefined",filename:this.fileInfo().filename,index:this.getIndex()}},e.prototype.find=function(a,b){for(var c,d=0;d<a.length;d++)if(c=b.call(a,a[d]))return c;return null},b.exports=e},{"./node":73}],86:[function(a,b,c){b.exports={getLocation:function(a,b){for(var c=a+1,d=null,e=-1;--c>=0&&"\n"!==b.charAt(c);)e++;return"number"==typeof a&&(d=(b.slice(0,a).match(/\n/g)||"").length),{line:d,column:e}},copyArray:function(a){var b,c=a.length,d=new Array(c);for(b=0;b<c;b++)d[b]=a[b];return d},clone:function(a){var b={};for(var c in a)a.hasOwnProperty(c)&&(b[c]=a[c]);return b},defaults:function(a,b){if(!b._defaults||b._defaults!==a)for(var c in a)a.hasOwnProperty(c)&&(b.hasOwnProperty(c)?Array.isArray(a[c])&&Array.isArray(b[c])&&a[c].forEach(function(a){b[c].indexOf(a)===-1&&b[c].push(a)}):b[c]=a[c]);return b._defaults=a,b},merge:function(a,b){for(var c in b)b.hasOwnProperty(c)&&(a[c]=b[c]);return a}}},{}],87:[function(a,b,c){var d=a("../tree"),e=a("./visitor"),f=a("../logger"),g=a("../utils"),h=function(){this._visitor=new e(this),this.contexts=[],this.allExtendsStack=[[]]};h.prototype={run:function(a){return a=this._visitor.visit(a),a.allExtends=this.allExtendsStack[0],a},visitDeclaration:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){if(!a.root){var c,e,f,h,i=[],j=a.rules,k=j?j.length:0;for(c=0;c<k;c++)a.rules[c]instanceof d.Extend&&(i.push(j[c]),a.extendOnEveryPath=!0);var l=a.paths;for(c=0;c<l.length;c++){var m=l[c],n=m[m.length-1],o=n.extendList;for(h=o?g.copyArray(o).concat(i):i,h&&(h=h.map(function(a){return a.clone()})),e=0;e<h.length;e++)this.foundExtends=!0,f=h[e],f.findSelfSelectors(m),f.ruleset=a,0===e&&(f.firstExtendOnThisSelectorPath=!0),this.allExtendsStack[this.allExtendsStack.length-1].push(f)}this.contexts.push(a.selectors)}},visitRulesetOut:function(a){a.root||(this.contexts.length=this.contexts.length-1)},visitMedia:function(a,b){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitMediaOut:function(a){this.allExtendsStack.length=this.allExtendsStack.length-1},visitAtRule:function(a,b){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitAtRuleOut:function(a){this.allExtendsStack.length=this.allExtendsStack.length-1}};var i=function(){this._visitor=new e(this)};i.prototype={run:function(a){var b=new h;if(this.extendIndices={},b.run(a),!b.foundExtends)return a;a.allExtends=a.allExtends.concat(this.doExtendChaining(a.allExtends,a.allExtends)),this.allExtendsStack=[a.allExtends];var c=this._visitor.visit(a);return this.checkExtendsForNonMatched(a.allExtends),c},checkExtendsForNonMatched:function(a){var b=this.extendIndices;a.filter(function(a){return!a.hasFoundMatches&&1==a.parent_ids.length}).forEach(function(a){var c="_unknown_";try{c=a.selector.toCSS({})}catch(d){}b[a.index+" "+c]||(b[a.index+" "+c]=!0,f.warn("extend '"+c+"' has no matches"))})},doExtendChaining:function(a,b,c){var e,f,g,h,i,j,k,l,m=[],n=this;for(c=c||0,e=0;e<a.length;e++)for(f=0;f<b.length;f++)j=a[e],k=b[f],j.parent_ids.indexOf(k.object_id)>=0||(i=[k.selfSelectors[0]],g=n.findMatch(j,i),g.length&&(j.hasFoundMatches=!0,j.selfSelectors.forEach(function(a){var b=k.visibilityInfo();h=n.extendSelector(g,i,a,j.isVisible()),l=new d.Extend(k.selector,k.option,0,k.fileInfo(),b),l.selfSelectors=h,h[h.length-1].extendList=[l],m.push(l),l.ruleset=k.ruleset,l.parent_ids=l.parent_ids.concat(k.parent_ids,j.parent_ids),k.firstExtendOnThisSelectorPath&&(l.firstExtendOnThisSelectorPath=!0,k.ruleset.paths.push(h))})));if(m.length){if(this.extendChainCount++,c>100){var o="{unable to calculate}",p="{unable to calculate}";try{o=m[0].selfSelectors[0].toCSS(),p=m[0].selector.toCSS()}catch(q){}throw{message:"extend circular reference detected. One of the circular extends is currently:"+o+":extend("+p+")"}}return m.concat(n.doExtendChaining(m,b,c+1))}return m},visitDeclaration:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitSelector:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){if(!a.root){var c,d,e,f,g=this.allExtendsStack[this.allExtendsStack.length-1],h=[],i=this;for(e=0;e<g.length;e++)for(d=0;d<a.paths.length;d++)if(f=a.paths[d],!a.extendOnEveryPath){var j=f[f.length-1].extendList;j&&j.length||(c=this.findMatch(g[e],f),c.length&&(g[e].hasFoundMatches=!0,g[e].selfSelectors.forEach(function(a){var b;b=i.extendSelector(c,f,a,g[e].isVisible()),h.push(b)})))}a.paths=a.paths.concat(h)}},findMatch:function(a,b){var c,d,e,f,g,h,i,j=this,k=a.selector.elements,l=[],m=[];for(c=0;c<b.length;c++)for(d=b[c],e=0;e<d.elements.length;e++)for(f=d.elements[e],(a.allowBefore||0===c&&0===e)&&l.push({pathIndex:c,index:e,matched:0,initialCombinator:f.combinator}),h=0;h<l.length;h++)i=l[h],g=f.combinator.value,""===g&&0===e&&(g=" "),!j.isElementValuesEqual(k[i.matched].value,f.value)||i.matched>0&&k[i.matched].combinator.value!==g?i=null:i.matched++,i&&(i.finished=i.matched===k.length,i.finished&&!a.allowAfter&&(e+1<d.elements.length||c+1<b.length)&&(i=null)),i?i.finished&&(i.length=k.length,i.endPathIndex=c,i.endPathElementIndex=e+1,l.length=0,m.push(i)):(l.splice(h,1),h--);return m},isElementValuesEqual:function(a,b){if("string"==typeof a||"string"==typeof b)return a===b;if(a instanceof d.Attribute)return a.op===b.op&&a.key===b.key&&(a.value&&b.value?(a=a.value.value||a.value,b=b.value.value||b.value,a===b):!a.value&&!b.value);if(a=a.value,b=b.value,a instanceof d.Selector){if(!(b instanceof d.Selector)||a.elements.length!==b.elements.length)return!1;for(var c=0;c<a.elements.length;c++){if(a.elements[c].combinator.value!==b.elements[c].combinator.value&&(0!==c||(a.elements[c].combinator.value||" ")!==(b.elements[c].combinator.value||" ")))return!1;if(!this.isElementValuesEqual(a.elements[c].value,b.elements[c].value))return!1}return!0}return!1},extendSelector:function(a,b,c,e){var f,g,h,i,j,k=0,l=0,m=[];for(f=0;f<a.length;f++)i=a[f],g=b[i.pathIndex],h=new d.Element(i.initialCombinator,c.elements[0].value,c.elements[0].getIndex(),c.elements[0].fileInfo()),i.pathIndex>k&&l>0&&(m[m.length-1].elements=m[m.length-1].elements.concat(b[k].elements.slice(l)),l=0,k++),j=g.elements.slice(l,i.index).concat([h]).concat(c.elements.slice(1)),k===i.pathIndex&&f>0?m[m.length-1].elements=m[m.length-1].elements.concat(j):(m=m.concat(b.slice(k,i.pathIndex)),m.push(new d.Selector(j))),k=i.endPathIndex,l=i.endPathElementIndex,l>=b[k].elements.length&&(l=0,k++);return k<b.length&&l>0&&(m[m.length-1].elements=m[m.length-1].elements.concat(b[k].elements.slice(l)),k++),m=m.concat(b.slice(k,b.length)),m=m.map(function(a){var b=a.createDerived(a.elements);return e?b.ensureVisibility():b.ensureInvisibility(),b})},visitMedia:function(a,b){var c=a.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);c=c.concat(this.doExtendChaining(c,a.allExtends)),this.allExtendsStack.push(c)},visitMediaOut:function(a){var b=this.allExtendsStack.length-1;this.allExtendsStack.length=b},visitAtRule:function(a,b){var c=a.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);c=c.concat(this.doExtendChaining(c,a.allExtends)),this.allExtendsStack.push(c)},visitAtRuleOut:function(a){var b=this.allExtendsStack.length-1;this.allExtendsStack.length=b}},b.exports=i},{"../logger":37,"../tree":65,"../utils":86,"./visitor":94}],88:[function(a,b,c){function d(a){this.imports=[],this.variableImports=[],this._onSequencerEmpty=a,this._currentDepth=0}d.prototype.addImport=function(a){var b=this,c={callback:a,args:null,isReady:!1};return this.imports.push(c),function(){c.args=Array.prototype.slice.call(arguments,0),c.isReady=!0,b.tryRun()}},d.prototype.addVariableImport=function(a){this.variableImports.push(a)},d.prototype.tryRun=function(){this._currentDepth++;try{for(;;){for(;this.imports.length>0;){var a=this.imports[0];if(!a.isReady)return;this.imports=this.imports.slice(1),a.callback.apply(null,a.args)}if(0===this.variableImports.length)break;var b=this.variableImports[0];this.variableImports=this.variableImports.slice(1),b()}}finally{this._currentDepth--}0===this._currentDepth&&this._onSequencerEmpty&&this._onSequencerEmpty()},b.exports=d},{}],89:[function(a,b,c){var d=a("../contexts"),e=a("./visitor"),f=a("./import-sequencer"),g=a("../utils"),h=function(a,b){this._visitor=new e(this),this._importer=a,this._finish=b,this.context=new d.Eval,this.importCount=0,this.onceFileDetectionMap={},this.recursionDetector={},this._sequencer=new f(this._onSequencerEmpty.bind(this))};h.prototype={isReplacing:!1,run:function(a){try{this._visitor.visit(a)}catch(b){this.error=b}this.isFinished=!0,this._sequencer.tryRun()},_onSequencerEmpty:function(){this.isFinished&&this._finish(this.error)},visitImport:function(a,b){var c=a.options.inline;if(!a.css||c){var e=new d.Eval(this.context,g.copyArray(this.context.frames)),f=e.frames[0];this.importCount++,a.isVariableImport()?this._sequencer.addVariableImport(this.processImportNode.bind(this,a,e,f)):this.processImportNode(a,e,f)}b.visitDeeper=!1},processImportNode:function(a,b,c){var d,e=a.options.inline;try{d=a.evalForImport(b)}catch(f){f.filename||(f.index=a.getIndex(),f.filename=a.fileInfo().filename),a.css=!0,a.error=f}if(!d||d.css&&!e)this.importCount--,this.isFinished&&this._sequencer.tryRun();else{d.options.multiple&&(b.importMultiple=!0);for(var g=void 0===d.css,h=0;h<c.rules.length;h++)if(c.rules[h]===a){c.rules[h]=d;break}var i=this.onImported.bind(this,d,b),j=this._sequencer.addImport(i);this._importer.push(d.getPath(),g,d.fileInfo(),d.options,j)}},onImported:function(a,b,c,d,e,f){c&&(c.filename||(c.index=a.getIndex(),c.filename=a.fileInfo().filename),this.error=c);var g=this,h=a.options.inline,i=a.options.isPlugin,j=a.options.optional,k=e||f in g.recursionDetector;if(b.importMultiple||(a.skip=!!k||function(){return f in g.onceFileDetectionMap||(g.onceFileDetectionMap[f]=!0,!1)}),!f&&j&&(a.skip=!0),d&&(a.root=d,a.importedFilename=f,!h&&!i&&(b.importMultiple||!k))){g.recursionDetector[f]=!0;var l=this.context;this.context=b;try{this._visitor.visit(d)}catch(c){this.error=c}this.context=l}g.importCount--,g.isFinished&&g._sequencer.tryRun()},visitDeclaration:function(a,b){"DetachedRuleset"===a.value.type?this.context.frames.unshift(a):b.visitDeeper=!1},visitDeclarationOut:function(a){"DetachedRuleset"===a.value.type&&this.context.frames.shift()},visitAtRule:function(a,b){this.context.frames.unshift(a)},visitAtRuleOut:function(a){this.context.frames.shift()},visitMixinDefinition:function(a,b){this.context.frames.unshift(a)},visitMixinDefinitionOut:function(a){this.context.frames.shift()},visitRuleset:function(a,b){this.context.frames.unshift(a)},visitRulesetOut:function(a){this.context.frames.shift()},visitMedia:function(a,b){this.context.frames.unshift(a.rules[0])},visitMediaOut:function(a){this.context.frames.shift()}},b.exports=h},{"../contexts":12,"../utils":86,"./import-sequencer":88,"./visitor":94}],90:[function(a,b,c){var d={Visitor:a("./visitor"),ImportVisitor:a("./import-visitor"),MarkVisibleSelectorsVisitor:a("./set-tree-visibility-visitor"),ExtendVisitor:a("./extend-visitor"),JoinSelectorVisitor:a("./join-selector-visitor"),ToCSSVisitor:a("./to-css-visitor")};b.exports=d},{"./extend-visitor":87,"./import-visitor":89,"./join-selector-visitor":91,"./set-tree-visibility-visitor":92,"./to-css-visitor":93,"./visitor":94}],91:[function(a,b,c){var d=a("./visitor"),e=function(){this.contexts=[[]],this._visitor=new d(this)};e.prototype={run:function(a){return this._visitor.visit(a)},visitDeclaration:function(a,b){b.visitDeeper=!1},visitMixinDefinition:function(a,b){b.visitDeeper=!1},visitRuleset:function(a,b){var c,d=this.contexts[this.contexts.length-1],e=[];this.contexts.push(e),a.root||(c=a.selectors,c&&(c=c.filter(function(a){return a.getIsOutput()}),a.selectors=c.length?c:c=null,c&&a.joinSelectors(e,d,c)),c||(a.rules=null),a.paths=e)},visitRulesetOut:function(a){this.contexts.length=this.contexts.length-1},visitMedia:function(a,b){var c=this.contexts[this.contexts.length-1];a.rules[0].root=0===c.length||c[0].multiMedia},visitAtRule:function(a,b){var c=this.contexts[this.contexts.length-1];a.rules&&a.rules.length&&(a.rules[0].root=a.isRooted||0===c.length||null)}},b.exports=e},{"./visitor":94}],92:[function(a,b,c){var d=function(a){this.visible=a};d.prototype.run=function(a){this.visit(a)},d.prototype.visitArray=function(a){if(!a)return a;var b,c=a.length;for(b=0;b<c;b++)this.visit(a[b]);return a},d.prototype.visit=function(a){return a?a.constructor===Array?this.visitArray(a):!a.blocksVisibility||a.blocksVisibility()?a:(this.visible?a.ensureVisibility():a.ensureInvisibility(),a.accept(this),a):a},b.exports=d},{}],93:[function(a,b,c){var d=a("../tree"),e=a("./visitor"),f=function(a){this._visitor=new e(this),this._context=a};f.prototype={containsSilentNonBlockedChild:function(a){var b;if(!a)return!1;for(var c=0;c<a.length;c++)if(b=a[c],b.isSilent&&b.isSilent(this._context)&&!b.blocksVisibility())return!0;return!1},keepOnlyVisibleChilds:function(a){a&&a.rules&&(a.rules=a.rules.filter(function(a){return a.isVisible()}))},isEmpty:function(a){return!a||!a.rules||0===a.rules.length},hasVisibleSelector:function(a){return!(!a||!a.paths)&&a.paths.length>0},resolveVisibility:function(a,b){if(!a.blocksVisibility()){if(this.isEmpty(a)&&!this.containsSilentNonBlockedChild(b))return;return a}var c=a.rules[0];if(this.keepOnlyVisibleChilds(c),!this.isEmpty(c))return a.ensureVisibility(),a.removeVisibilityBlock(),a},isVisibleRuleset:function(a){return!!a.firstRoot||!this.isEmpty(a)&&!(!a.root&&!this.hasVisibleSelector(a))}};var g=function(a){this._visitor=new e(this),this._context=a,this.utils=new f(a)};g.prototype={isReplacing:!0,run:function(a){return this._visitor.visit(a)},visitDeclaration:function(a,b){if(!a.blocksVisibility()&&!a.variable)return a},visitMixinDefinition:function(a,b){a.frames=[]},visitExtend:function(a,b){},visitComment:function(a,b){if(!a.blocksVisibility()&&!a.isSilent(this._context))return a},visitMedia:function(a,b){var c=a.rules[0].rules;return a.accept(this._visitor),b.visitDeeper=!1,this.utils.resolveVisibility(a,c)},visitImport:function(a,b){if(!a.blocksVisibility())return a},visitAtRule:function(a,b){return a.rules&&a.rules.length?this.visitAtRuleWithBody(a,b):this.visitAtRuleWithoutBody(a,b)},visitAnonymous:function(a,b){if(!a.blocksVisibility())return a.accept(this._visitor),a},visitAtRuleWithBody:function(a,b){function c(a){var b=a.rules;return 1===b.length&&(!b[0].paths||0===b[0].paths.length)}function d(a){var b=a.rules;return c(a)?b[0].rules:b}var e=d(a);return a.accept(this._visitor),b.visitDeeper=!1,this.utils.isEmpty(a)||this._mergeRules(a.rules[0].rules),this.utils.resolveVisibility(a,e)},visitAtRuleWithoutBody:function(a,b){if(!a.blocksVisibility()){if("@charset"===a.name){if(this.charset){if(a.debugInfo){var c=new d.Comment("/* "+a.toCSS(this._context).replace(/\n/g,"")+" */\n");return c.debugInfo=a.debugInfo,this._visitor.visit(c)}return}this.charset=!0}return a}},checkValidNodes:function(a,b){if(a)for(var c=0;c<a.length;c++){var e=a[c];if(b&&e instanceof d.Declaration&&!e.variable)throw{message:"Properties must be inside selector blocks. They cannot be in the root",index:e.getIndex(),filename:e.fileInfo()&&e.fileInfo().filename};if(e instanceof d.Call)throw{message:"Function '"+e.name+"' is undefined",index:e.getIndex(),filename:e.fileInfo()&&e.fileInfo().filename};if(e.type&&!e.allowRoot)throw{message:e.type+" node returned by a function is not valid here",index:e.getIndex(),filename:e.fileInfo()&&e.fileInfo().filename}}},visitRuleset:function(a,b){var c,d=[];if(this.checkValidNodes(a.rules,a.firstRoot),a.root)a.accept(this._visitor),b.visitDeeper=!1;else{this._compileRulesetPaths(a);for(var e=a.rules,f=e?e.length:0,g=0;g<f;)c=e[g],c&&c.rules?(d.push(this._visitor.visit(c)),e.splice(g,1),f--):g++;f>0?a.accept(this._visitor):a.rules=null,b.visitDeeper=!1}return a.rules&&(this._mergeRules(a.rules),this._removeDuplicateRules(a.rules)),this.utils.isVisibleRuleset(a)&&(a.ensureVisibility(),d.splice(0,0,a)),1===d.length?d[0]:d},_compileRulesetPaths:function(a){a.paths&&(a.paths=a.paths.filter(function(a){var b;for(" "===a[0].elements[0].combinator.value&&(a[0].elements[0].combinator=new d.Combinator("")),b=0;b<a.length;b++)if(a[b].isVisible()&&a[b].getIsOutput())return!0;return!1}))},_removeDuplicateRules:function(a){if(a){var b,c,e,f={};for(e=a.length-1;e>=0;e--)if(c=a[e],c instanceof d.Declaration)if(f[c.name]){b=f[c.name],b instanceof d.Declaration&&(b=f[c.name]=[f[c.name].toCSS(this._context)]);var g=c.toCSS(this._context);b.indexOf(g)!==-1?a.splice(e,1):b.push(g)}else f[c.name]=c}},_mergeRules:function(a){if(a){for(var b={},c=[],e=0;e<a.length;e++){var f=a[e];if(f.merge){var g=f.name;b[g]?a.splice(e--,1):c.push(b[g]=[]),b[g].push(f)}}c.forEach(function(a){if(a.length>0){var b=a[0],c=[],e=[new d.Expression(c)];a.forEach(function(a){"+"===a.merge&&c.length>0&&e.push(new d.Expression(c=[])),c.push(a.value),b.important=b.important||a.important}),b.value=new d.Value(e)}})}}},b.exports=g},{"../tree":65,"./visitor":94}],94:[function(a,b,c){function d(a){return a}function e(a,b){var c,d;for(c in a)switch(d=a[c],typeof d){case"function":d.prototype&&d.prototype.type&&(d.prototype.typeIndex=b++);break;case"object":b=e(d,b)}return b}var f=a("../tree"),g={visitDeeper:!0},h=!1,i=function(a){this._implementation=a,this._visitFnCache=[],h||(e(f,1),h=!0)};i.prototype={visit:function(a){if(!a)return a;var b=a.typeIndex;if(!b)return a;var c,e=this._visitFnCache,f=this._implementation,h=b<<1,i=1|h,j=e[h],k=e[i],l=g;if(l.visitDeeper=!0,j||(c="visit"+a.type,j=f[c]||d,k=f[c+"Out"]||d,e[h]=j,e[i]=k),j!==d){var m=j.call(f,a,l);f.isReplacing&&(a=m)}return l.visitDeeper&&a&&a.accept&&a.accept(this),k!=d&&k.call(f,a),a},visitArray:function(a,b){if(!a)return a;var c,d=a.length;if(b||!this._implementation.isReplacing){for(c=0;c<d;c++)this.visit(a[c]);return a}var e=[];for(c=0;c<d;c++){var f=this.visit(a[c]);void 0!==f&&(f.splice?f.length&&this.flatten(f,e):e.push(f))}return e},flatten:function(a,b){b||(b=[]);var c,d,e,f,g,h;for(d=0,c=a.length;d<c;d++)if(e=a[d],void 0!==e)if(e.splice)for(g=0,f=e.length;g<f;g++)h=e[g],void 0!==h&&(h.splice?h.length&&this.flatten(h,b):b.push(h));else b.push(e);return b}},b.exports=i},{"../tree":65}],95:[function(a,b,c){"use strict";function d(){if(i.length)throw i.shift()}function e(a){var b;b=h.length?h.pop():new f,b.task=a,g(b)}function f(){this.task=null}var g=a("./raw"),h=[],i=[],j=g.makeRequestCallFromTimer(d);b.exports=e,f.prototype.call=function(){try{this.task.call()}catch(a){e.onerror?e.onerror(a):(i.push(a),j())}finally{this.task=null,h[h.length]=this}}},{"./raw":96}],96:[function(a,b,c){(function(a){"use strict";function c(a){h.length||(g(),i=!0),h[h.length]=a}function d(){for(;j<h.length;){var a=j;if(j+=1,h[a].call(),j>k){for(var b=0,c=h.length-j;b<c;b++)h[b]=h[b+j];h.length-=j,j=0}}h.length=0,j=0,i=!1}function e(a){var b=1,c=new m(a),d=document.createTextNode("");return c.observe(d,{characterData:!0}),function(){b=-b,d.data=b}}function f(a){return function(){function b(){clearTimeout(c),clearInterval(d),a()}var c=setTimeout(b,0),d=setInterval(b,50)}}b.exports=c;var g,h=[],i=!1,j=0,k=1024,l="undefined"!=typeof a?a:self,m=l.MutationObserver||l.WebKitMutationObserver;g="function"==typeof m?e(d):f(d),c.requestFlush=g,c.makeRequestCallFromTimer=f}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],97:[function(a,b,c){"use strict";function d(){}function e(a){try{return a.then}catch(b){return r=b,s}}function f(a,b){try{return a(b)}catch(c){return r=c,s}}function g(a,b,c){try{a(b,c)}catch(d){return r=d,s}}function h(a){if("object"!=typeof this)throw new TypeError("Promises must be constructed via new");if("function"!=typeof a)throw new TypeError("Promise constructor's argument is not a function");this._40=0,this._65=0,this._55=null,this._72=null,a!==d&&p(a,this)}function i(a,b,c){return new a.constructor(function(e,f){var g=new h(d);g.then(e,f),j(a,new o(b,c,g))})}function j(a,b){for(;3===a._65;)a=a._55;return h._37&&h._37(a),0===a._65?0===a._40?(a._40=1,void(a._72=b)):1===a._40?(a._40=2,void(a._72=[a._72,b])):void a._72.push(b):void k(a,b)}function k(a,b){q(function(){var c=1===a._65?b.onFulfilled:b.onRejected;if(null===c)return void(1===a._65?l(b.promise,a._55):m(b.promise,a._55));var d=f(c,a._55);d===s?m(b.promise,r):l(b.promise,d)})}function l(a,b){if(b===a)return m(a,new TypeError("A promise cannot be resolved with itself."));if(b&&("object"==typeof b||"function"==typeof b)){var c=e(b);if(c===s)return m(a,r);if(c===a.then&&b instanceof h)return a._65=3,a._55=b,void n(a);if("function"==typeof c)return void p(c.bind(b),a)}a._65=1,a._55=b,n(a)}function m(a,b){a._65=2,a._55=b,h._87&&h._87(a,b),n(a)}function n(a){if(1===a._40&&(j(a,a._72),a._72=null),2===a._40){for(var b=0;b<a._72.length;b++)j(a,a._72[b]);a._72=null}}function o(a,b,c){this.onFulfilled="function"==typeof a?a:null,this.onRejected="function"==typeof b?b:null,this.promise=c}function p(a,b){var c=!1,d=g(a,function(a){c||(c=!0,l(b,a))},function(a){c||(c=!0,m(b,a))});c||d!==s||(c=!0,m(b,r))}var q=a("asap/raw"),r=null,s={};b.exports=h,h._37=null,h._87=null,h._61=d,h.prototype.then=function(a,b){if(this.constructor!==h)return i(this,a,b);var c=new h(d);return j(this,new o(a,b,c)),c}},{"asap/raw":96}],98:[function(a,b,c){"use strict";function d(a){var b=new e(e._61);return b._65=1,b._55=a,b}var e=a("./core.js");b.exports=e;var f=d(!0),g=d(!1),h=d(null),i=d(void 0),j=d(0),k=d("");e.resolve=function(a){if(a instanceof e)return a;if(null===a)return h;if(void 0===a)return i;if(a===!0)return f;if(a===!1)return g;if(0===a)return j;if(""===a)return k;if("object"==typeof a||"function"==typeof a)try{var b=a.then;if("function"==typeof b)return new e(b.bind(a))}catch(c){return new e(function(a,b){b(c)})}return d(a)},e.all=function(a){var b=Array.prototype.slice.call(a);return new e(function(a,c){function d(g,h){if(h&&("object"==typeof h||"function"==typeof h)){if(h instanceof e&&h.then===e.prototype.then){for(;3===h._65;)h=h._55;return 1===h._65?d(g,h._55):(2===h._65&&c(h._55),void h.then(function(a){d(g,a)},c))}var i=h.then;if("function"==typeof i){var j=new e(i.bind(h));return void j.then(function(a){d(g,a)},c)}}b[g]=h,0===--f&&a(b)}if(0===b.length)return a([]);for(var f=b.length,g=0;g<b.length;g++)d(g,b[g])})},e.reject=function(a){return new e(function(b,c){c(a)})},e.race=function(a){return new e(function(b,c){a.forEach(function(a){e.resolve(a).then(b,c)})})},e.prototype["catch"]=function(a){return this.then(null,a)}},{"./core.js":97}],99:[function(a,b,c){"function"!=typeof Promise.prototype.done&&(Promise.prototype.done=function(a,b){var c=arguments.length?this.then.apply(this,arguments):this;c.then(null,function(a){setTimeout(function(){throw a},0)})})},{}],100:[function(a,b,c){a("asap");"undefined"==typeof Promise&&(Promise=a("./lib/core.js"),a("./lib/es6-extensions.js")),a("./polyfill-done.js")},{"./lib/core.js":97,"./lib/es6-extensions.js":98,"./polyfill-done.js":99,asap:95}]},{},[2])(2)});
\ No newline at end of file