diff --git a/CHANGELOG.md b/CHANGELOG.md
index efce211b2..0bbc08bd9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# 2.3.1
+
+2015-01-28
+
+ - Fix depends option (regression in 2.3.0)
+ - Support parent selector (`&`) used in sub element expression (e.g. `:not(.c_&)`)
+
 # 2.3.0
 
 2015-01-27
diff --git a/bower.json b/bower.json
index a17d29512..73ceb2fc5 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "less",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "main": "dist/less.js",
   "ignore": [
     "**/.*",
diff --git a/dist/less.js b/dist/less.js
index a3ec0f82c..e6027884a 100644
--- a/dist/less.js
+++ b/dist/less.js
@@ -1,5 +1,5 @@
 /*!
- * Less - Leaner CSS v2.3.0
+ * Less - Leaner CSS v2.3.1
  * http://lesscss.org
  *
  * Copyright (c) 2009-2015, Alexis Sellier <self@cloudhead.net>
@@ -788,11 +788,11 @@ module.exports = function(less, options) {
 module.exports = {
     extractId: function(href) {
         return href.replace(/^[a-z-]+:\/+?[^\/]+/, '' )  // Remove protocol & domain
-            .replace(/[\?\&]livereload=\w+/,'' )  // Remove LiveReload cachebuster
-            .replace(/^\//,                 '' )  // Remove root /
-            .replace(/\.[a-zA-Z]+$/,        '' )  // Remove simple extension
-            .replace(/[^\.\w-]+/g,          '-')  // Replace illegal characters
-            .replace(/\./g,                 ':'); // Replace dots with colons(for valid id)
+            .replace(/[\?\&]livereload=\w+/, '' )  // Remove LiveReload cachebuster
+            .replace(/^\//,                  '' )  // Remove root /
+            .replace(/\.[a-zA-Z]+$/,         '' )  // Remove simple extension
+            .replace(/[^\.\w-]+/g,           '-')  // Replace illegal characters
+            .replace(/\./g,                  ':'); // Replace dots with colons(for valid id)
     },
     addDataAttr: function(options, tag) {
         for (var opt in tag.dataset) {
@@ -1095,9 +1095,9 @@ module.exports = {
         'ms': 0.001
     },
     angle: {
-        'rad': 1/(2*Math.PI),
-        'deg': 1/360,
-        'grad': 1/400,
+        'rad': 1 / (2 * Math.PI),
+        'deg': 1 / 360,
+        'grad': 1 / 400,
         'turn': 1
     }
 };
@@ -1157,10 +1157,10 @@ abstractFileManager.prototype.pathDiff = function pathDiff(url, baseUrl) {
     }
     baseUrlDirectories = baseUrlParts.directories.slice(i);
     urlDirectories = urlParts.directories.slice(i);
-    for(i = 0; i < baseUrlDirectories.length-1; i++) {
+    for(i = 0; i < baseUrlDirectories.length - 1; i++) {
         diff += "../";
     }
-    for(i = 0; i < urlDirectories.length-1; i++) {
+    for(i = 0; i < urlDirectories.length - 1; i++) {
         diff += urlDirectories[i] + "/";
     }
     return diff;
@@ -1185,7 +1185,7 @@ abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, ba
     if (baseUrl && (!urlParts[1] || urlParts[2])) {
         baseUrlParts = baseUrl.match(urlPartsRegex);
         if (!baseUrlParts) {
-            throw new Error("Could not parse page url - '"+baseUrl+"'");
+            throw new Error("Could not parse page url - '" + baseUrl + "'");
         }
         urlParts[1] = urlParts[1] || baseUrlParts[1] || "";
         if (!urlParts[2]) {
@@ -1206,7 +1206,7 @@ abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, ba
 
         for(i = 0; i < directories.length; i++) {
             if (directories[i] === ".." && i > 0) {
-                directories.splice(i-1, 2);
+                directories.splice(i - 1, 2);
                 i -= 2;
             }
         }
@@ -1311,9 +1311,9 @@ var colorBlendModeFunctions = {
     },
     overlay: function(cb, cs) {
         cb *= 2;
-        return (cb <= 1)
-            ? colorBlendModeFunctions.multiply(cb, cs)
-            : colorBlendModeFunctions.screen(cb - 1, cs);
+        return (cb <= 1) ?
+            colorBlendModeFunctions.multiply(cb, cs) :
+            colorBlendModeFunctions.screen(cb - 1, cs);
     },
     softlight: function(cb, cs) {
         var d = 1, e = cb;
@@ -1401,7 +1401,7 @@ colorFunctions = {
             h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h);
             if      (h * 6 < 1) { return m1 + (m2 - m1) * h * 6; }
             else if (h * 2 < 1) { return m2; }
-            else if (h * 3 < 2) { return m1 + (m2 - m1) * (2/3 - h) * 6; }
+            else if (h * 3 < 2) { return m1 + (m2 - m1) * (2 / 3 - h) * 6; }
             else                { return m1; }
         }
 
@@ -1411,9 +1411,9 @@ colorFunctions = {
         var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
         var m1 = l * 2 - m2;
 
-        return colorFunctions.rgba(hue(h + 1/3) * 255,
+        return colorFunctions.rgba(hue(h + 1 / 3) * 255,
             hue(h)       * 255,
-            hue(h - 1/3) * 255,
+            hue(h - 1 / 3) * 255,
             a);
     },
 
@@ -1481,9 +1481,9 @@ colorFunctions = {
     },
     luminance: function (color) {
         var luminance =
-            (0.2126 * color.rgb[0] / 255)
-                + (0.7152 * color.rgb[1] / 255)
-                + (0.0722 * color.rgb[2] / 255);
+            (0.2126 * color.rgb[0] / 255) +
+                (0.7152 * color.rgb[1] / 255) +
+                (0.0722 * color.rgb[2] / 255);
 
         return new Dimension(luminance * color.alpha * 100, '%');
     },
@@ -1622,7 +1622,7 @@ colorFunctions = {
         };
     },
     tint: function(color, amount) {
-        return colorFunctions.mix(colorFunctions.rgb(255,255,255), color, amount);
+        return colorFunctions.mix(colorFunctions.rgb(255, 255, 255), color, amount);
     },
     shade: function(color, amount) {
         return colorFunctions.mix(colorFunctions.rgb(0, 0, 0), color, amount);
@@ -1655,7 +1655,7 @@ module.exports = function(environment) {
 
         var fragmentStart = filePath.indexOf('#');
         var fragment = '';
-        if (fragmentStart!==-1) {
+        if (fragmentStart !== -1) {
             fragment = filePath.slice(fragmentStart);
             filePath = filePath.slice(0, fragmentStart);
         }
@@ -1706,7 +1706,8 @@ module.exports = function(environment) {
         if (uri.length >= DATA_URI_MAX) {
 
             if (this.context.ieCompat !== false) {
-                logger.warn("Skipped data-uri embedding of " + filePath + " because its size (" + uri.length + " characters) exceeds IE8-safe " + DATA_URI_MAX + " characters!");
+                logger.warn("Skipped data-uri embedding of " + filePath + " because its size (" + uri.length +
+                    " characters) exceeds IE8-safe " + DATA_URI_MAX + " characters!");
 
                 return fallback(this, filePathNode || mimetypeNode);
             }
@@ -1937,7 +1938,9 @@ functionRegistry.addMultiple({
         return new Anonymous(str instanceof JavaScript ? str.evaluated : str.value);
     },
     escape: function (str) {
-        return new Anonymous(encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B").replace(/\(/g, "%28").replace(/\)/g, "%29"));
+        return new Anonymous(
+            encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B")
+                .replace(/\(/g, "%28").replace(/\)/g, "%29"));
     },
     replace: function (string, pattern, replacement, flags) {
         var result = string.value;
@@ -1973,7 +1976,9 @@ module.exports = function(environment) {
     functionRegistry.add("svg-gradient", function(direction) {
 
         function throwArgumentDescriptor() {
-            throw { type: "Argument", message: "svg-gradient expects direction, start_color [start_position], [color position,]..., end_color [end_position]" };
+            throw { type: "Argument",
+                message: "svg-gradient expects direction, start_color [start_position], [color position,]...," +
+                    " end_color [end_position]" };
         }
 
         if (arguments.length < 3) {
@@ -2008,7 +2013,8 @@ module.exports = function(environment) {
                 rectangleDimension = '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'" };
+                throw { type: "Argument", message: "svg-gradient direction must be 'to bottom', 'to right'," +
+                    " 'to bottom right', 'to top right' or 'ellipse at center'" };
         }
         returner = '<?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">' +
@@ -2023,7 +2029,7 @@ module.exports = function(environment) {
                 position = undefined;
             }
 
-            if (!(color instanceof Color) || (!((i === 0 || i+1 === stops.length) && position === undefined) && !(position instanceof Dimension))) {
+            if (!(color instanceof Color) || (!((i === 0 || i + 1 === stops.length) && position === undefined) && !(position instanceof Dimension))) {
                 throwArgumentDescriptor();
             }
             positionValue = position ? position.toCSS(renderEnv) : i === 0 ? "0%" : "100%";
@@ -2095,7 +2101,9 @@ functionRegistry.addMultiple({
     isunit: isunit,
     unit: function (val, unit) {
         if(!(val instanceof Dimension)) {
-            throw { type: "Argument", message: "the first argument to unit must be a number" + (val instanceof Operation ? ". Have you forgotten parenthesis?" : "") };
+            throw { type: "Argument",
+                message: "the first argument to unit must be a number" +
+                    (val instanceof Operation ? ". Have you forgotten parenthesis?" : "") };
         }
         if (unit) {
             if (unit instanceof Keyword) {
@@ -2209,7 +2217,10 @@ module.exports = function(environment) {
             //   then rootpath should become 'less/../'
             newFileInfo.currentDirectory = fileManager.getPath(resolvedFilename);
             if(newFileInfo.relativeUrls) {
-                newFileInfo.rootpath = fileManager.join((importManager.context.rootpath || ""), fileManager.pathDiff(newFileInfo.currentDirectory, newFileInfo.entryPath));
+                newFileInfo.rootpath = fileManager.join(
+                    (importManager.context.rootpath || ""),
+                    fileManager.pathDiff(newFileInfo.currentDirectory, newFileInfo.entryPath));
+
                 if (!fileManager.isPathAbsolute(newFileInfo.rootpath) && fileManager.alwaysMakePathsAbsolute()) {
                     newFileInfo.rootpath = fileManager.join(newFileInfo.entryPath, newFileInfo.rootpath);
                 }
@@ -2254,7 +2265,7 @@ module.exports = function(environment, fileManagers) {
     var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
 
     var less = {
-        version: [2, 3, 0],
+        version: [2, 3, 1],
         data: require('./data'),
         tree: require('./tree'),
         Environment: (Environment = require("./environment/environment")),
@@ -3070,7 +3081,7 @@ var Parser = function Parser(context, imports, fileInfo) {
         //     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]]]))
+        //         Rule ("width",  Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
         //         Ruleset (Selector [Element '>', '.child'], [...])
         //     ])
         //
@@ -3320,7 +3331,9 @@ var Parser = function Parser(context, imports, fileInfo) {
                     var rgb;
 
                     if (parserInput.currentChar() === '#' && (rgb = parserInput.$re(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))) {
-                        var colorCandidateString = rgb.input.match(/^#([\w]+).*/); // strip colons, brackets, whitespaces and other characters that should not definitely be part of color string
+                        // strip colons, brackets, whitespaces and other characters that should not
+                        // definitely be part of color string
+                        var colorCandidateString = rgb.input.match(/^#([\w]+).*/);
                         colorCandidateString = colorCandidateString[1];
                         if (!colorCandidateString.match(/^[A-Fa-f0-9]+$/)) { // verify if candidate consists only of allowed HEX characters
                             error("Invalid HEX color code");
@@ -3416,8 +3429,9 @@ var Parser = function Parser(context, imports, fileInfo) {
                     }
 
                     option = option && option[1];
-                    if (!elements)
+                    if (!elements) {
                         error("Missing target selector for :extend().");
+                    }
                     extend = new(tree.Extend)(new(tree.Selector)(elements), option, index);
                     if (extendList) { extendList.push(extend); } else { extendList = [ extend ]; }
 
@@ -3727,8 +3741,10 @@ var Parser = function Parser(context, imports, fileInfo) {
 
                 c = this.combinator();
 
-                e = parserInput.$re(/^(?:\d+\.\d+|\d+)%/) || parserInput.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/) ||
-                    parserInput.$char('*') || parserInput.$char('&') || this.attribute() || parserInput.$re(/^\([^()@]+\)/) || parserInput.$re(/^[\.#:](?=@)/) ||
+                e = parserInput.$re(/^(?:\d+\.\d+|\d+)%/) ||
+                    parserInput.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/) ||
+                    parserInput.$char('*') || parserInput.$char('&') || this.attribute() ||
+                    parserInput.$re(/^\([^&()@]+\)/) ||  parserInput.$re(/^[\.#:](?=@)/) ||
                     this.entities.variableCurly();
 
                 if (! e) {
@@ -4472,8 +4488,8 @@ Parser.serializeVars = function(vars) {
     for (var name in vars) {
         if (Object.hasOwnProperty.call(vars, name)) {
             var value = vars[name];
-            s += ((name[0] === '@') ? '' : '@') + name +': '+ value +
-                ((('' + value).slice(-1) === ';') ? '' : ';');
+            s += ((name[0] === '@') ? '' : '@') + name + ': ' + value +
+                ((String(value).slice(-1) === ';') ? '' : ';');
         }
     }
 
@@ -4696,7 +4712,7 @@ module.exports = function (environment) {
         }
         if (options.sourceMapRootpath) {
             this._sourceMapRootpath = options.sourceMapRootpath.replace(/\\/g, '/');
-            if (this._sourceMapRootpath.charAt(this._sourceMapRootpath.length-1) !== '/') {
+            if (this._sourceMapRootpath.charAt(this._sourceMapRootpath.length - 1) !== '/') {
                 this._sourceMapRootpath += '/';
             }
         } else {
@@ -4747,11 +4763,11 @@ module.exports = function (environment) {
             }
             inputSource = inputSource.substring(0, index);
             sourceLines = inputSource.split("\n");
-            sourceColumns = sourceLines[sourceLines.length-1];
+            sourceColumns = sourceLines[sourceLines.length - 1];
         }
 
         lines = chunk.split("\n");
-        columns = lines[lines.length-1];
+        columns = lines[lines.length - 1];
 
         if (fileInfo) {
             if (!mapLines) {
@@ -4867,7 +4883,7 @@ module.exports = function(root, options) {
 
     if (options.pluginManager) {
         var pluginVisitors = options.pluginManager.getVisitors();
-        for(i =0; i < pluginVisitors.length; i++) {
+        for(i = 0; i < pluginVisitors.length; i++) {
             var pluginVisitor = pluginVisitors[i];
             if (pluginVisitor.isPreEvalVisitor) {
                 preEvalVisitors.push(pluginVisitor);
@@ -5344,7 +5360,7 @@ Condition.prototype.eval = function (context) {
                         default: return false;
                 }
         }
-    }) (this.op, this.lvalue.eval(context), this.rvalue.eval(context));
+    })(this.op, this.lvalue.eval(context), this.rvalue.eval(context));
 
     return this.negate ? !result : result;
 };
@@ -5352,7 +5368,7 @@ module.exports = Condition;
 
 },{"./node":67}],51:[function(require,module,exports){
 var debugInfo = function(context, ctx, lineSeparator) {
-    var result="";
+    var result = "";
     if (context.dumpLineNumbers && !context.compress) {
         switch(context.dumpLineNumbers) {
             case 'comments':
@@ -5374,8 +5390,12 @@ debugInfo.asComment = function(ctx) {
 };
 
 debugInfo.asMediaQuery = function(ctx) {
+    var filenameWithProtocol = ctx.debugInfo.fileName;
+    if (!/^[a-z]+:\/\//i.test(filenameWithProtocol)) {
+        filenameWithProtocol = 'file://' + filenameWithProtocol;
+    }
     return '@media -sass-debug-info{filename{font-family:' +
-        ('file://' + ctx.debugInfo.fileName).replace(/([.:\/\\])/g, function (a) {
+        filenameWithProtocol.replace(/([.:\/\\])/g, function (a) {
             if (a == '\\') {
                 a = '\/';
             }
@@ -5437,7 +5457,7 @@ Dimension.prototype.toColor = function () {
 };
 Dimension.prototype.genCSS = function (context, output) {
     if ((context && context.strictUnits) && !this.unit.isSingular()) {
-        throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: "+this.unit.toString());
+        throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: " + this.unit.toString());
     }
 
     var value = this.fround(context, this.value),
@@ -5628,9 +5648,21 @@ Directive.prototype.eval = function (context) {
     return new Directive(this.name, value, rules,
         this.index, this.currentFileInfo, this.debugInfo, this.isReferenced);
 };
-Directive.prototype.variable = function (name) { if (this.rules) return Ruleset.prototype.variable.call(this.rules, name); };
-Directive.prototype.find = function () { if (this.rules) return Ruleset.prototype.find.apply(this.rules, arguments); };
-Directive.prototype.rulesets = function () { if (this.rules) return Ruleset.prototype.rulesets.apply(this.rules); };
+Directive.prototype.variable = function (name) {
+    if (this.rules) {
+        return Ruleset.prototype.variable.call(this.rules, name);
+    }
+};
+Directive.prototype.find = function () {
+    if (this.rules) {
+        return Ruleset.prototype.find.apply(this.rules, arguments);
+    }
+};
+Directive.prototype.rulesets = function () {
+    if (this.rules) {
+        return Ruleset.prototype.rulesets.apply(this.rules);
+    }
+};
 Directive.prototype.markReferenced = function () {
     var i, rules;
     this.isReferenced = true;
@@ -5948,7 +5980,7 @@ Import.prototype.evalPath = function (context) {
             var pathValue = path.value;
             // Add the base path if the import is relative
             if (pathValue && context.isPathRelative(pathValue)) {
-                path.value = rootpath +pathValue;
+                path.value = rootpath + pathValue;
             }
         }
         path.value = context.normalizePath(path.value);
@@ -6296,8 +6328,9 @@ Media.prototype.permute = function (arr) {
   }
 };
 Media.prototype.bubbleSelectors = function (selectors) {
-  if (!selectors)
-    return;
+  if (!selectors) {
+      return;
+  }
   this.rules = [new Ruleset(selectors.slice(0), [this.rules[0]])];
 };
 module.exports = Media;
@@ -6327,7 +6360,7 @@ MixinCall.prototype.accept = function (visitor) {
 };
 MixinCall.prototype.eval = function (context) {
     var mixins, mixin, mixinPath, args, rules = [], match = false, i, m, f, isRecursive, isOneFound, rule,
-        candidates = [], candidate, conditionResult = [], defaultResult, defFalseEitherCase=-1,
+        candidates = [], candidate, conditionResult = [], defaultResult, defFalseEitherCase = -1,
         defNone = 0, defTrue = 1, defFalse = 2, count, originalRuleset, noArgumentsFilter;
 
     function calcDefGroup(mixin, mixinPath) {
@@ -6389,7 +6422,7 @@ MixinCall.prototype.eval = function (context) {
                 if (mixin.matchArgs(args, context)) {
                     candidate = {mixin: mixin, group: calcDefGroup(mixin, mixinPath)};
 
-                    if (candidate.group!==defFalseEitherCase) {
+                    if (candidate.group !== defFalseEitherCase) {
                         candidates.push(candidate);
                     }
 
@@ -6410,8 +6443,7 @@ MixinCall.prototype.eval = function (context) {
                 defaultResult = defTrue;
                 if ((count[defTrue] + count[defFalse]) > 1) {
                     throw { type: 'Runtime',
-                        message: 'Ambiguous use of `default()` found when matching for `'
-                            + this.format(args) + '`',
+                        message: 'Ambiguous use of `default()` found when matching for `' + this.format(args) + '`',
                         index: this.index, filename: this.currentFileInfo.filename };
                 }
             }
@@ -6609,9 +6641,10 @@ 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, new contexts.Eval(context, this.frames ? this.frames.concat(context.frames) : context.frames), args, [])] // the parameter variables
-                .concat(this.frames) // the parent namespace/mixin frames
-                .concat(context.frames)))) { // the current environment frames
+            [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
         return false;
     }
     return true;
@@ -6845,7 +6878,7 @@ Quoted.prototype.eval = function (context) {
         do {
           value = evaluatedValue;
           evaluatedValue = value.replace(regexp, replacementFnc);
-        } while  (value!==evaluatedValue);
+        } while  (value !== evaluatedValue);
         return evaluatedValue;
     }
     value = iterativeReplace(value, /`([^`]+)`/g, javascriptReplacement);
@@ -6907,9 +6940,8 @@ Rule.prototype.eval = function (context) {
     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);
+        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) {
@@ -6980,6 +7012,7 @@ var Node = require("./node"),
     Rule = require("./rule"),
     Selector = require("./selector"),
     Element = require("./element"),
+    Paren = require("./paren"),
     contexts = require("../contexts"),
     defaultFunc = require("../functions/default"),
     getDebugInfo = require("./debug-info");
@@ -7085,7 +7118,7 @@ Ruleset.prototype.eval = function (context) {
             });
             rsRules.splice.apply(rsRules, [i, 1].concat(rules));
             rsRuleCnt += rules.length - 1;
-            i += rules.length-1;
+            i += rules.length - 1;
             ruleset.resetCache();
         } else if (rsRules[i].type === "RulesetCall") {
             /*jshint loopfunc:true */
@@ -7098,7 +7131,7 @@ Ruleset.prototype.eval = function (context) {
             });
             rsRules.splice.apply(rsRules, [i, 1].concat(rules));
             rsRuleCnt += rules.length - 1;
-            i += rules.length-1;
+            i += rules.length - 1;
             ruleset.resetCache();
         }
     }
@@ -7151,7 +7184,7 @@ Ruleset.prototype.evalImports = function(context) {
             importRules = rules[i].eval(context);
             if (importRules && importRules.length) {
                 rules.splice.apply(rules, [i, 1].concat(importRules));
-                i+= importRules.length-1;
+                i+= importRules.length - 1;
             } else {
                 rules.splice(i, 1, importRules);
             }
@@ -7173,7 +7206,7 @@ Ruleset.prototype.makeImportant = function() {
 };
 // lets you call a css selector with a guard
 Ruleset.prototype.matchCondition = function (args, context) {
-    var lastSelector = this.selectors[this.selectors.length-1];
+    var lastSelector = this.selectors[this.selectors.length - 1];
     if (!lastSelector.evaldCondition) {
         return false;
     }
@@ -7401,8 +7434,9 @@ Ruleset.prototype.markReferenced = function () {
 
     if (this.rules) {
         for (s = 0; s < this.rules.length; s++) {
-            if (this.rules[s].markReferenced)
+            if (this.rules[s].markReferenced) {
                 this.rules[s].markReferenced();
+            }
         }
     }
 };
@@ -7410,20 +7444,22 @@ Ruleset.prototype.getIsReferenced = function() {
     var i, j, path, selector;
 
     if (this.paths) {
-        for (i=0; i<this.paths.length; i++) {
+        for (i = 0; i < this.paths.length; i++) {
             path = this.paths[i];
-            for (j=0; j<path.length; j++) {
-                if (path[j].getIsReferenced && path[j].getIsReferenced())
+            for (j = 0; j < path.length; j++) {
+                if (path[j].getIsReferenced && path[j].getIsReferenced()) {
                     return true;
+                }
             }
         }
     }
 
     if (this.selectors) {
-        for (i=0;i<this.selectors.length;i++) {
+        for (i = 0; i < this.selectors.length; i++) {
             selector = this.selectors[i];
-            if (selector.getIsReferenced && selector.getIsReferenced())
+            if (selector.getIsReferenced && selector.getIsReferenced()) {
                 return true;
+            }
         }
     }
     return false;
@@ -7437,180 +7473,250 @@ Ruleset.prototype.joinSelectors = function (paths, context, selectors) {
 
 Ruleset.prototype.joinSelector = function (paths, context, selector) {
 
-    var i, j, k,
-        hasParentSelector, newSelectors, el, sel, parentSel,
-        newSelectorPath, afterParentJoin, newJoinedSelector,
-        newJoinedSelectorEmpty, lastSelector, currentElements,
-        selectorsMultiplied;
-
-    for (i = 0; i < selector.elements.length; i++) {
-        el = selector.elements[i];
-        if (el.value === '&') {
-            hasParentSelector = true;
-        }
-    }
+    function createParenthesis(elementsToPak, originalElement) {
+        var replacementParen, j;
+        if (elementsToPak.length === 0) {
+            replacementParen = new Paren(elementsToPak[0]);
+        } else {
+            var insideParent = [];
+            for (j = 0; j < elementsToPak.length; j++) {
+                insideParent.push(new Element(null, elementsToPak[j], originalElement.index, originalElement.currentFileInfo));
+            }
+            replacementParen = new Paren(new Selector(insideParent));
+        }
+        return replacementParen;
+    }
+
+    function createSelector(containedElement, originalElement) {
+        var element, selector;
+        element = new Element(null, containedElement, originalElement.index, originalElement.currentFileInfo);
+        selector = new Selector([element]);
+        return selector;
+    }
+
+    // replace all parent selectors inside `inSelector` by content of `context` array
+    // resulting selectors are returned inside `paths` array
+    // returns true if `inSelector` contained at least one parent selector
+    function replaceParentSelector(paths, context, inSelector) {
+        // The paths are [[Selector]]
+        // The first list is a list of comma separated selectors
+        // The inner list is a list of inheritance separated selectors
+        // e.g.
+        // .a, .b {
+        //   .c {
+        //   }
+        // }
+        // == [[.a] [.c]] [[.b] [.c]]
+        //
+        var i, j, k, currentElements, newSelectors, selectorsMultiplied, sel, el, hadParentSelector = false;
+        function findNestedSelector(element) {
+            var maybeSelector;
+            if (element.value.type !== 'Paren') {
+                return null;
+            }
 
-    if (!hasParentSelector) {
-        if (context.length > 0) {
-            for (i = 0; i < context.length; i++) {
-                paths.push(context[i].concat(selector));
+            maybeSelector = element.value.value;
+            if (maybeSelector.type !== 'Selector') {
+                return null;
             }
+
+            return maybeSelector;
         }
-        else {
-            paths.push([selector]);
-        }
-        return;
-    }
 
-    // The paths are [[Selector]]
-    // The first list is a list of comma separated selectors
-    // The inner list is a list of inheritance separated selectors
-    // e.g.
-    // .a, .b {
-    //   .c {
-    //   }
-    // }
-    // == [[.a] [.c]] [[.b] [.c]]
-    //
+        // the elements from the current selector so far
+        currentElements = [];
+        // the current list of new selectors to add to the path.
+        // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
+        // by the parents
+        newSelectors = [
+            []
+        ];
 
-    // the elements from the current selector so far
-    currentElements = [];
-    // the current list of new selectors to add to the path.
-    // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
-    // by the parents
-    newSelectors = [[]];
-
-    for (i = 0; i < selector.elements.length; i++) {
-        el = selector.elements[i];
-        // non parent reference elements just get added
-        if (el.value !== "&") {
-            currentElements.push(el);
-        } else {
-            // the new list of selectors to add
-            selectorsMultiplied = [];
-
-            // merge the current list of non parent selector elements
-            // on to the current list of selectors to add
-            if (currentElements.length > 0) {
-                this.mergeElementsOnToSelectors(currentElements, newSelectors);
-            }
-
-            // loop through our current selectors
-            for (j = 0; j < newSelectors.length; j++) {
-                sel = newSelectors[j];
-                // if we don't have any parent paths, the & might be in a mixin so that it can be used
-                // whether there are parents or not
-                if (context.length === 0) {
-                    // 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 = sel[0].elements.slice(0);
-                        sel[0].elements.push(new Element(el.combinator, '', el.index, el.currentFileInfo));
+        for (i = 0; i < inSelector.elements.length; i++) {
+            el = inSelector.elements[i];
+            // non parent reference elements just get added
+            if (el.value !== "&") {
+                var nestedSelector = findNestedSelector(el);
+                if (nestedSelector != null) {
+                    // merge the current list of non parent selector elements
+                    // on to the current list of selectors to add
+                    mergeElementsOnToSelectors(currentElements, newSelectors);
+
+                    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
+                    for (k = 0; k < nestedPaths.length; k++) {
+                        var replacementSelector = createSelector(createParenthesis(nestedPaths[k], el), el);
+                        addAllReplacementsIntoPath(newSelectors, [replacementSelector], el, inSelector, replacedNewSelectors);
                     }
-                    selectorsMultiplied.push(sel);
+                    newSelectors = replacedNewSelectors;
+                    currentElements = [];
+
+                } else {
+                    currentElements.push(el);
                 }
-                else {
-                    // and the parent selectors
-                    for (k = 0; k < context.length; k++) {
-                        parentSel = context[k];
-                        // We need to put the current selectors
-                        // then join the last selector's elements on to the parents selectors
-
-                        // our new selector path
-                        newSelectorPath = [];
-                        // selectors from the parent after the join
-                        afterParentJoin = [];
-                        newJoinedSelectorEmpty = true;
-
-                        //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
+
+            } else {
+                hadParentSelector = true;
+                // the new list of selectors to add
+                selectorsMultiplied = [];
+
+                // merge the current list of non parent selector elements
+                // on to the current list of selectors to add
+                mergeElementsOnToSelectors(currentElements, newSelectors);
+
+                // loop through our current selectors
+                for (j = 0; j < newSelectors.length; j++) {
+                    sel = newSelectors[j];
+                    // if we don't have any parent paths, the & might be in a mixin so that it can be used
+                    // whether there are parents or not
+                    if (context.length === 0) {
+                        // the combinator used on el should now be applied to the next element instead so that
+                        // it is not lost
                         if (sel.length > 0) {
-                            newSelectorPath = sel.slice(0);
-                            lastSelector = newSelectorPath.pop();
-                            newJoinedSelector = selector.createDerived(lastSelector.elements.slice(0));
-                            newJoinedSelectorEmpty = false;
+                            sel[0].elements.push(new Element(el.combinator, '', el.index, el.currentFileInfo));
                         }
-                        else {
-                            newJoinedSelector = selector.createDerived([]);
+                        selectorsMultiplied.push(sel);
+                    }
+                    else {
+                        // and the parent selectors
+                        for (k = 0; k < context.length; k++) {
+                            // We need to put the current selectors
+                            // then join the last selector's elements on to the parents selectors
+                            var newSelectorPath = addReplacementIntoPath(sel, context[k], el, inSelector);
+                            // add that to our new set of selectors
+                            selectorsMultiplied.push(newSelectorPath);
                         }
+                    }
+                }
 
-                        //put together the parent selectors after the join
-                        if (parentSel.length > 1) {
-                            afterParentJoin = afterParentJoin.concat(parentSel.slice(1));
-                        }
+                // our new selectors has been multiplied, so reset the state
+                newSelectors = selectorsMultiplied;
+                currentElements = [];
+            }
+        }
 
-                        if (parentSel.length > 0) {
-                            newJoinedSelectorEmpty = false;
-
-                            // /deep/ is a combinator that is valid without anything in front of it
-                            // so if the & does not have a combinator that is "" or " " then
-                            // and there is a combinator on the parent, then grab that.
-                            // this also allows + a { & .b { .a & { ... though not sure why you would want to do that
-                            var combinator = el.combinator,
-                                parentEl = parentSel[0].elements[0];
-                            if (combinator.emptyOrWhitespace && !parentEl.combinator.emptyOrWhitespace) {
-                                combinator = parentEl.combinator;
-                            }
-                            // join the elements so far with the first part of the parent
-                            newJoinedSelector.elements.push(new Element(combinator, parentEl.value, el.index, el.currentFileInfo));
-                            newJoinedSelector.elements = newJoinedSelector.elements.concat(parentSel[0].elements.slice(1));
-                        }
+        // if we have any elements left over (e.g. .a& .b == .b)
+        // add them on to all the current selectors
+        mergeElementsOnToSelectors(currentElements, newSelectors);
 
-                        if (!newJoinedSelectorEmpty) {
-                            // now add the joined selector
-                            newSelectorPath.push(newJoinedSelector);
-                        }
+        for (i = 0; i < newSelectors.length; i++) {
+            if (newSelectors[i].length > 0) {
+                paths.push(newSelectors[i]);
+            }
+        }
 
-                        // and the rest of the parent
-                        newSelectorPath = newSelectorPath.concat(afterParentJoin);
+        return hadParentSelector;
+    }
 
-                        // add that to our new set of selectors
-                        selectorsMultiplied.push(newSelectorPath);
-                    }
-                }
+    // joins selector path from `beginningPath` with selector path in `addPath`
+    // `replacedElement` contains element that is being replaced by `addPath`
+    // returns concatenated path
+    function addReplacementIntoPath(beginningPath, addPath, replacedElement, originalSelector) {
+        var newSelectorPath, lastSelector, newJoinedSelector;
+        // our new selector path
+        newSelectorPath = [];
+
+        //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);
+            lastSelector = newSelectorPath.pop();
+            newJoinedSelector = originalSelector.createDerived(lastSelector.elements.slice(0));
+        }
+        else {
+            newJoinedSelector = originalSelector.createDerived([]);
+        }
+
+        if (addPath.length > 0) {
+            // /deep/ is a combinator that is valid without anything in front of it
+            // so if the & does not have a combinator that is "" or " " then
+            // and there is a combinator on the parent, then grab that.
+            // this also allows + a { & .b { .a & { ... though not sure why you would want to do that
+            var combinator = replacedElement.combinator, parentEl = addPath[0].elements[0];
+            if (combinator.emptyOrWhitespace && !parentEl.combinator.emptyOrWhitespace) {
+                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 = newJoinedSelector.elements.concat(addPath[0].elements.slice(1));
+        }
 
-            // our new selectors has been multiplied, so reset the state
-            newSelectors = selectorsMultiplied;
-            currentElements = [];
+        // now add the joined selector - but only if it is not empty
+        if (newJoinedSelector.elements.length !== 0) {
+            newSelectorPath.push(newJoinedSelector);
         }
-    }
 
-    // if we have any elements left over (e.g. .a& .b == .b)
-    // add them on to all the current selectors
-    if (currentElements.length > 0) {
-        this.mergeElementsOnToSelectors(currentElements, newSelectors);
+        //put together the parent selectors after the join (e.g. the rest of the parent)
+        if (addPath.length > 1) {
+            newSelectorPath = newSelectorPath.concat(addPath.slice(1));
+        }
+        return newSelectorPath;
     }
 
-    for (i = 0; i < newSelectors.length; i++) {
-        if (newSelectors[i].length > 0) {
-            paths.push(newSelectors[i]);
+    // joins selector path from `beginningPath` with every selector path in `addPaths` array
+    // `replacedElement` contains element that is being replaced by `addPath`
+    // returns array with all concatenated paths
+    function addAllReplacementsIntoPath( beginningPath, addPaths, replacedElement, originalSelector, result) {
+        var j;
+        for (j = 0; j < beginningPath.length; j++) {
+            var newSelectorPath = addReplacementIntoPath(beginningPath[j], addPaths, replacedElement, originalSelector);
+            result.push(newSelectorPath);
         }
+        return result;
     }
-};
-Ruleset.prototype.mergeElementsOnToSelectors = function(elements, selectors) {
-    var i, sel;
 
-    if (selectors.length === 0) {
-        selectors.push([ new Selector(elements) ]);
-        return;
+    function mergeElementsOnToSelectors(elements, selectors) {
+        var i, sel;
+
+        if (elements.length === 0) {
+            return ;
+        }
+        if (selectors.length === 0) {
+            selectors.push([ new Selector(elements) ]);
+            return;
+        }
+
+        for (i = 0; i < selectors.length; i++) {
+            sel = selectors[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));
+            }
+            else {
+                sel.push(new Selector(elements));
+            }
+        }
     }
 
-    for (i = 0; i < selectors.length; i++) {
-        sel = selectors[i];
+    // joinSelector code follows
+    var i, newPaths, hadParentSelector;
+
+    newPaths = [];
+    hadParentSelector = replaceParentSelector(newPaths, context, selector);
 
-        // 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));
+    if (!hadParentSelector) {
+        if (context.length > 0) {
+            newPaths = [];
+            for (i = 0; i < context.length; i++) {
+                newPaths.push(context[i].concat(selector));
+            }
         }
         else {
-            sel.push(new Selector(elements));
+            newPaths = [[selector]];
         }
     }
+
+    for (i = 0; i < newPaths.length; i++) {
+        paths.push(newPaths[i]);
+    }
+
 };
 module.exports = Ruleset;
 
-},{"../contexts":10,"../functions/default":19,"./debug-info":51,"./element":55,"./node":67,"./rule":71,"./selector":74}],74:[function(require,module,exports){
+},{"../contexts":10,"../functions/default":19,"./debug-info":51,"./element":55,"./node":67,"./paren":69,"./rule":71,"./selector":74}],74:[function(require,module,exports){
 var Node = require("./node");
 
 var Selector = function (elements, extendList, condition, index, currentFileInfo, isReferenced) {
@@ -7664,8 +7770,9 @@ Selector.prototype.match = function (other) {
     return olen; // return number of matched elements
 };
 Selector.prototype.CacheElements = function() {
-    if (this._elements)
+    if (this._elements) {
         return;
+    }
 
     var elements = this.elements.map( function(v) {
         return v.combinator.value + (v.value.value || v.value);
@@ -7882,7 +7989,7 @@ URL.prototype.eval = function (context) {
             context.isPathRelative(val.value)) {
 
             if (!val.quote) {
-                rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\"+match; });
+                rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\" + match; });
             }
             val.value = rootpath + val.value;
         }
@@ -7936,7 +8043,7 @@ Value.prototype.genCSS = function (context, output) {
     var i;
     for(i = 0; i < this.value.length; i++) {
         this.value[i].genCSS(context, output);
-        if (i+1 < this.value.length) {
+        if (i + 1 < this.value.length) {
             output.add((context && context.compress) ? ',' : ', ');
         }
     }
@@ -7973,7 +8080,7 @@ Variable.prototype.eval = function (context) {
         var v = frame.variable(name);
         if (v) {
             if (v.important) {
-                var importantScope = context.importantScope[context.importantScope.length-1];
+                var importantScope = context.importantScope[context.importantScope.length - 1];
                 importantScope.important = v.important;
             }
             return v.value.eval(context);
@@ -8084,7 +8191,7 @@ ExtendFinderVisitor.prototype = {
                 extend.findSelfSelectors(selectorPath);
                 extend.ruleset = rulesetNode;
                 if (j === 0) { extend.firstExtendOnThisSelectorPath = true; }
-                this.allExtendsStack[this.allExtendsStack.length-1].push(extend);
+                this.allExtendsStack[this.allExtendsStack.length - 1].push(extend);
             }
         }
 
@@ -8139,21 +8246,22 @@ ProcessExtendsVisitor.prototype = {
 
                 if(!indicies[extend.index + ' ' + selector]) {
                     indicies[extend.index + ' ' + selector] = true;
-                    logger.warn("extend '"+selector+"' has no matches");
+                    logger.warn("extend '" + selector + "' has no matches");
                 }
             });
     },
     doExtendChaining: function (extendsList, extendsListTarget, iterationCount) {
         //
-        // chaining is different from normal extension.. if we extend an extend then we are not just copying, altering and pasting
-        // the selector we would do normally, but we are also adding an extend with the same target selector
+        // chaining is different from normal extension.. if we extend an extend then we are not just copying, altering
+        // and pasting the selector we would do normally, but we are also adding an extend with the same target selector
         // this means this new extend can then go and alter other extends
         //
         // this method deals with all the chaining work - without it, extend is flat and doesn't work on other extend selectors
-        // this is also the most expensive.. and a match on one selector can cause an extension of a selector we had already processed if
-        // we look at each selector at a time, as is done in visitRuleset
+        // this is also the most expensive.. and a match on one selector can cause an extension of a selector we had already
+        // processed if we look at each selector at a time, as is done in visitRuleset
 
-        var extendIndex, targetExtendIndex, matches, extendsToAdd = [], newSelector, extendVisitor = this, selectorPath, extend, targetExtend, newExtend;
+        var extendIndex, targetExtendIndex, matches, extendsToAdd = [], newSelector, extendVisitor = this, selectorPath,
+            extend, targetExtend, newExtend;
 
         iterationCount = iterationCount || 0;
 
@@ -8191,7 +8299,7 @@ ProcessExtendsVisitor.prototype = {
                         newExtend.selfSelectors = newSelector;
 
                         // add the extend onto the list of extends for that selector
-                        newSelector[newSelector.length-1].extendList = [newExtend];
+                        newSelector[newSelector.length - 1].extendList = [newExtend];
 
                         // record that we need to add it.
                         extendsToAdd.push(newExtend);
@@ -8225,11 +8333,13 @@ ProcessExtendsVisitor.prototype = {
                     selectorTwo = extendsToAdd[0].selector.toCSS();
                 }
                 catch(e) {}
-                throw {message: "extend circular reference detected. One of the circular extends is currently:"+selectorOne+":extend(" + selectorTwo+")"};
+                throw { message: "extend circular reference detected. One of the circular extends is currently:" +
+                    selectorOne + ":extend(" + selectorTwo + ")"};
             }
 
-            // now process the new extends on the existing rules so that we can handle a extending b extending c ectending d extending e...
-            return extendsToAdd.concat(extendVisitor.doExtendChaining(extendsToAdd, extendsListTarget, iterationCount+1));
+            // now process the new extends on the existing rules so that we can handle a extending b extending c extending
+            // d extending e...
+            return extendsToAdd.concat(extendVisitor.doExtendChaining(extendsToAdd, extendsListTarget, iterationCount + 1));
         } else {
             return extendsToAdd;
         }
@@ -8247,7 +8357,8 @@ ProcessExtendsVisitor.prototype = {
         if (rulesetNode.root) {
             return;
         }
-        var matches, pathIndex, extendIndex, allExtends = this.allExtendsStack[this.allExtendsStack.length-1], selectorsToAdd = [], extendVisitor = this, selectorPath;
+        var matches, pathIndex, extendIndex, allExtends = this.allExtendsStack[this.allExtendsStack.length - 1],
+            selectorsToAdd = [], extendVisitor = this, selectorPath;
 
         // look at each selector path in the ruleset, find any extend matches and then copy, find and replace
 
@@ -8257,7 +8368,7 @@ ProcessExtendsVisitor.prototype = {
 
                 // extending extends happens initially, before the main pass
                 if (rulesetNode.extendOnEveryPath) { continue; }
-                var extendList = selectorPath[selectorPath.length-1].extendList;
+                var extendList = selectorPath[selectorPath.length - 1].extendList;
                 if (extendList && extendList.length) { continue; }
 
                 matches = this.findMatch(allExtends[extendIndex], selectorPath);
@@ -8294,15 +8405,16 @@ ProcessExtendsVisitor.prototype = {
 
                 // if we allow elements before our match we can add a potential match every time. otherwise only at the first element.
                 if (extend.allowBefore || (haystackSelectorIndex === 0 && hackstackElementIndex === 0)) {
-                    potentialMatches.push({pathIndex: haystackSelectorIndex, index: hackstackElementIndex, matched: 0, initialCombinator: haystackElement.combinator});
+                    potentialMatches.push({pathIndex: haystackSelectorIndex, index: hackstackElementIndex, matched: 0,
+                        initialCombinator: haystackElement.combinator});
                 }
 
                 for(i = 0; i < potentialMatches.length; i++) {
                     potentialMatch = potentialMatches[i];
 
                     // selectors add " " onto the first element. When we use & it joins the selectors together, but if we don't
-                    // then each selector in haystackSelectorPath has a space before it added in the toCSS phase. so we need to work out
-                    // what the resulting combinator will be
+                    // then each selector in haystackSelectorPath has a space before it added in the toCSS phase. so we need to
+                    // work out what the resulting combinator will be
                     targetCombinator = haystackElement.combinator.value;
                     if (targetCombinator === '' && hackstackElementIndex === 0) {
                         targetCombinator = ' ';
@@ -8320,7 +8432,8 @@ ProcessExtendsVisitor.prototype = {
                     if (potentialMatch) {
                         potentialMatch.finished = potentialMatch.matched === needleElements.length;
                         if (potentialMatch.finished &&
-                            (!extend.allowAfter && (hackstackElementIndex+1 < hackstackSelector.elements.length || haystackSelectorIndex+1 < haystackSelectorPath.length))) {
+                            (!extend.allowAfter &&
+                                (hackstackElementIndex + 1 < hackstackSelector.elements.length || haystackSelectorIndex + 1 < haystackSelectorPath.length))) {
                             potentialMatch = null;
                         }
                     }
@@ -8366,7 +8479,7 @@ ProcessExtendsVisitor.prototype = {
             if (!(elementValue2 instanceof tree.Selector) || elementValue1.elements.length !== elementValue2.elements.length) {
                 return false;
             }
-            for(var i = 0; i <elementValue1.elements.length; i++) {
+            for(var i = 0; i  < elementValue1.elements.length; i++) {
                 if (elementValue1.elements[i].combinator.value !== elementValue2.elements[i].combinator.value) {
                     if (i !== 0 || (elementValue1.elements[i].combinator.value || ' ') !== (elementValue2.elements[i].combinator.value || ' ')) {
                         return false;
@@ -8404,7 +8517,8 @@ ProcessExtendsVisitor.prototype = {
             );
 
             if (match.pathIndex > currentSelectorPathIndex && currentSelectorPathElementIndex > 0) {
-                path[path.length - 1].elements = path[path.length - 1].elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
+                path[path.length - 1].elements = path[path.length - 1]
+                    .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
                 currentSelectorPathElementIndex = 0;
                 currentSelectorPathIndex++;
             }
@@ -8433,7 +8547,8 @@ ProcessExtendsVisitor.prototype = {
         }
 
         if (currentSelectorPathIndex < selectorPath.length && currentSelectorPathElementIndex > 0) {
-            path[path.length - 1].elements = path[path.length - 1].elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
+            path[path.length - 1].elements = path[path.length - 1]
+                .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
             currentSelectorPathIndex++;
         }
 
@@ -8444,7 +8559,7 @@ ProcessExtendsVisitor.prototype = {
     visitRulesetOut: function (rulesetNode) {
     },
     visitMedia: function (mediaNode, visitArgs) {
-        var newAllExtends = mediaNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);
+        var newAllExtends = mediaNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
         newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, mediaNode.allExtends));
         this.allExtendsStack.push(newAllExtends);
     },
@@ -8454,7 +8569,7 @@ ProcessExtendsVisitor.prototype = {
         this.allExtendsStack.length = lastIndex;
     },
     visitDirective: function (directiveNode, visitArgs) {
-        var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]);
+        var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
         newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, directiveNode.allExtends));
         this.allExtendsStack.push(newAllExtends);
     },
@@ -8610,7 +8725,8 @@ ImportVisitor.prototype = {
             var onImported = this.onImported.bind(this, evaldImportNode, context),
                 sequencedOnImported = this._sequencer.addImport(onImported);
 
-            this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.currentFileInfo, evaldImportNode.options, sequencedOnImported);
+            this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.currentFileInfo,
+                evaldImportNode.options, sequencedOnImported);
         } else {
             this.importCount--;
             if (this.isFinished) {
@@ -8814,7 +8930,7 @@ ToCSSVisitor.prototype = {
             // 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");
+                    var comment = new tree.Comment("/* " + directiveNode.toCSS(this._context).replace(/\n/g, "") + " */\n");
                     comment.debugInfo = directiveNode.debugInfo;
                     return this._visitor.visit(comment);
                 }
@@ -8838,7 +8954,7 @@ ToCSSVisitor.prototype = {
             }
 
             //the directive was not directly referenced
-            for (var r = 0; r<directiveNode.rules.rules.length; r++) {
+            for (var r = 0; r < directiveNode.rules.rules.length; r++) {
                 var rule = directiveNode.rules.rules[r];
                 if (rule.getIsReferenced && rule.getIsReferenced()) {
                     //the directive contains something that was referenced (likely by extend)
@@ -8853,8 +8969,9 @@ ToCSSVisitor.prototype = {
             //was referenced. Therefore it must not be shown in output.
             return ;
         } else {
-            if (!directiveNode.getIsReferenced())
+            if (!directiveNode.getIsReferenced()) {
                 return;
+            }
         }
         return directiveNode;
     },
@@ -9015,7 +9132,7 @@ ToCSSVisitor.prototype = {
                 var spacedGroups = [];
                 var lastSpacedGroup = [];
                 parts.map(function (p) {
-                if (p.merge==="+") {
+                if (p.merge === "+") {
                     if (lastSpacedGroup.length > 0) {
                             spacedGroups.push(toExpression(lastSpacedGroup));
                         }
diff --git a/dist/less.min.js b/dist/less.min.js
index fa5dd8b8a..7a2e68480 100644
--- a/dist/less.min.js
+++ b/dist/less.min.js
@@ -1,5 +1,5 @@
 /*!
- * Less - Leaner CSS v2.3.0
+ * Less - Leaner CSS v2.3.1
  * http://lesscss.org
  *
  * Copyright (c) 2009-2015, Alexis Sellier <self@cloudhead.net>
@@ -11,7 +11,7 @@
  */
 
 !function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;"undefined"!=typeof window?b=window:"undefined"!=typeof global?b=global:"undefined"!=typeof self&&(b=self),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;d.length>g;g++)e(d[g]);return e}({1:[function(a,b){var c=a("./utils").addDataAttr,d=a("./browser");b.exports=function(a,b){c(b,d.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 e=/!dumpLineNumbers:(comments|mediaquery|all)/.exec(a.location.hash);e&&(b.dumpLineNumbers=e[1]),void 0===b.useFileCache&&(b.useFileCache=!0),void 0===b.onReady&&(b.onReady=!0)}},{"./browser":3,"./utils":9}],2:[function(a,b){a("promise/polyfill.js");var c=window.less||{};a("./add-default-options")(window,c);var d=b.exports=a("./index")(window,c);c.onReady&&(/!watch/.test(window.location.hash)&&d.watch(),d.pageLoadFinished=d.registerStylesheets().then(function(){return d.refresh("development"===d.env)}))},{"./add-default-options":1,"./index":7,"promise/polyfill.js":void 0}],3:[function(a,b){var c=a("./utils");b.exports={createCSS:function(a,b,d){var e=d.href||"",f="less:"+(d.title||c.extractId(e)),g=a.getElementById(f),h=!1,i=a.createElement("style");i.setAttribute("type","text/css"),d.media&&i.setAttribute("media",d.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=d&&d.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":9}],4:[function(a,b){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){if(d){c.info("saving "+a+" to cache.");try{d.setItem(a,e),d.setItem(a+":timestamp",b)}catch(f){c.error('failed to save "'+a+'" to local storage for caching.')}}},getCSS:function(a,b){var c=d&&d.getItem(a),e=d&&d.getItem(a+":timestamp");return e&&b.lastModified&&new Date(b.lastModified).valueOf()===new Date(e).valueOf()?c:void 0}}}},{}],5:[function(a,b){var c=a("./utils"),d=a("./browser");b.exports=function(a,b,e){function f(b,f){var g,h,i="less-error-message:"+c.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||e.logLevel>=4)&&(h+="<br/>Stack Trace</br />"+b.stack.split("\n").slice(1).join("<br/>")),k.innerHTML=h,d.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"===e.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(a,b){e.errorReporting&&"html"!==e.errorReporting?"console"===e.errorReporting?k(a,b):"function"==typeof e.errorReporting&&e.errorReporting("add",a,b):f(a,b)}function h(b){var d=a.document.getElementById("less-error-message:"+c.extractId(b));d&&d.parentNode.removeChild(d)}function i(){}function j(a){e.errorReporting&&"html"!==e.errorReporting?"console"===e.errorReporting?i(a):"function"==typeof e.errorReporting&&e.errorReporting("remove",a):h(a)}function k(a,c){var d="{line} {content}",f=a.filename||c,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(d.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||e.logLevel>=4)&&(h+="\nStack Trace\n"+a.stack),b.logger.error(h)}return{add:g,remove:j}}},{"./browser":3,"./utils":9}],6:[function(a,b){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&&300>b.status?c(b.responseText,b.getResponseHeader("Last-Modified")):"function"==typeof d&&d(b.status,a)}var i=d(),j=b.isFileProtocol?b.fileAsync:b.async;"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&&300>i.status?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(){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":14}],7:[function(a,b){var c=a("./utils").addDataAttr,d=a("./browser");b.exports=function(e,f){function g(a){return f.postProcessor&&"function"==typeof f.postProcessor&&(a=f.postProcessor.call(a,a)||a),a}function h(a){var b={};for(var c in a)a.hasOwnProperty(c)&&(b[c]=a[c]);return b}function i(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 j(a){for(var b,c=n.getElementsByTagName("style"),d=0;c.length>d;d++)if(b=c[d],b.type.match(u)){var e=h(f);e.modifyVars=a;var g=b.innerHTML||"";e.filename=n.location.href.replace(/#.*$/,""),o.render(g,e,i(function(a,b,c){b?s.add(b,"inline"):(a.type="text/css",a.styleSheet?a.styleSheet.cssText=c.css:a.innerHTML=c.css)},null,b))}}function k(a,b,d,e,i){function j(c){var f=c.contents,h=c.filename,i=c.webInfo,j={currentDirectory:r.getPath(h),filename:h,rootFilename:h,relativeUrls:k.relativeUrls};if(j.entryPath=j.currentDirectory,j.rootpath=k.rootpath||j.currentDirectory,i&&(i.remaining=e,!k.modifyVars)){var l=t.getCSS(h,i);if(!d&&l)return i.local=!0,void b(null,l,f,a,i,h)}s.remove(h),k.rootFileInfo=j,o.render(f,k,function(c,d){c?(c.href=h,b(c)):(d.css=g(d.css),k.modifyVars||t.setCSS(a.href,i.lastModified,d.css),b(null,d.css,f,a,i,h))})}var k=h(f);c(k,a),k.mime=a.type,i&&(k.modifyVars=i),r.loadFile(a.href,null,k,p,function(a,c){return a?void b(a):void j(c)})}function l(a,b,c){for(var d=0;o.sheets.length>d;d++)k(o.sheets[d],a,b,o.sheets.length-(d+1),c)}function m(){"development"===o.env&&(o.watchTimer=setInterval(function(){o.watchMode&&(r.clearFileCache(),l(function(a,b,c,f){a?s.add(a,a.href||f.href):b&&d.createCSS(e.document,b,f)}))},f.poll))}var n=e.document,o=a("../less")();b.exports=o,o.options=f;var p=o.environment,q=a("./file-manager")(f,o.logger),r=new q;p.addFileManager(r),o.FileManager=q,a("./log-listener")(o,f);var s=a("./error-reporting")(e,o,f),t=o.cache=f.cache||a("./cache")(e,f,o.logger);f.functions&&o.functions.functionRegistry.addMultiple(f.functions);var u=/^text\/(x-)?less$/;return o.watch=function(){return o.watchMode||(o.env="development",m()),this.watchMode=!0,!0},o.unwatch=function(){return clearInterval(o.watchTimer),this.watchMode=!1,!1},o.registerStylesheets=function(){return new Promise(function(a){var b=n.getElementsByTagName("link");o.sheets=[];for(var c=0;b.length>c;c++)("stylesheet/less"===b[c].rel||b[c].rel.match(/stylesheet/)&&b[c].type.match(u))&&o.sheets.push(b[c]);a()})},o.modifyVars=function(a){return o.refresh(!0,a,!1)},o.refresh=function(a,b,c){return(a||c)&&c!==!1&&r.clearFileCache(),new Promise(function(c,f){var g,h,i;g=h=new Date,l(function(a,b,j,k,l){return a?(s.add(a,a.href||k.href),void f(a)):(o.logger.info(l.local?"loading "+k.href+" from cache.":"rendered "+k.href+" successfully."),d.createCSS(e.document,b,k),o.logger.info("css for "+k.href+" generated in "+(new Date-h)+"ms"),0===l.remaining&&(i=new Date-g,o.logger.info("less has finished. css generated in "+i+"ms"),c({startTime:g,endTime:h,totalMilliseconds:i,sheets:o.sheets.length})),void(h=new Date))},a,b),j(b)})},o.refreshStyles=j,o}},{"../less":29,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./log-listener":8,"./utils":9}],8:[function(a,b){b.exports=function(a,b){var c=4,d=3,e=2,f=1;b.logLevel="undefined"!=typeof b.logLevel?b.logLevel:"development"===b.env?d:f,b.loggers||(b.loggers=[{debug:function(a){b.logLevel>=c&&console.log(a)},info:function(a){b.logLevel>=d&&console.log(a)},warn:function(a){b.logLevel>=e&&console.warn(a)},error:function(a){b.logLevel>=f&&console.error(a)}}]);for(var g=0;b.loggers.length>g;g++)a.logger.addListener(b.loggers[g])}},{}],9:[function(a,b){b.exports={extractId:function(a){return a.replace(/^[a-z-]+:\/+?[^\/]+/,"").replace(/[\?\&]livereload=\w+/,"").replace(/^\//,"").replace(/\.[a-zA-Z]+$/,"").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){}}}},{}],10:[function(a,b){var c={};b.exports=c;var d=function(a,b,c){if(a)for(var d=0;c.length>d;d++)a.hasOwnProperty(c[d])&&(b[c[d]]=a[c[d]])},e=["paths","relativeUrls","rootpath","strictImports","insecure","dumpLineNumbers","compress","syncImport","chunkInput","mime","useFileCache","processImports","reference","pluginManager"];c.Parse=function(a){d(a,this,e),"string"==typeof this.paths&&(this.paths=[this.paths])};var f=["paths","compress","ieCompat","strictMath","strictUnits","sourceMap","importMultiple","urlArgs","javascriptEnabled","pluginManager","importantScope"];c.Eval=function(a,b){d(a,this,f),this.frames=b||[],this.importantScope=this.importantScope||[]},c.Eval.prototype.inParenthesis=function(){this.parensStack||(this.parensStack=[]),this.parensStack.push(!0)},c.Eval.prototype.outOfParenthesis=function(){this.parensStack.pop()},c.Eval.prototype.isMathOn=function(){return this.strictMath?this.parensStack&&this.parensStack.length:!0},c.Eval.prototype.isPathRelative=function(a){return!/^(?:[a-z-]+:|\/)/i.test(a)},c.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("/")}},{}],11:[function(a,b){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"}},{}],12:[function(a,b){b.exports={colors:a("./colors"),unitConversions:a("./unit-conversions")}},{"./colors":11,"./unit-conversions":13}],13:[function(a,b){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}}},{}],14:[function(a,b){var c=function(){};c.prototype.getPath=function(a){var b=a.lastIndexOf("?");return b>0&&(a=a.slice(0,b)),b=a.lastIndexOf("/"),0>b&&(b=a.lastIndexOf("\\")),0>b?"":a.slice(0,b+1)},c.prototype.tryAppendLessExtension=function(a){return/(\.[a-z]*$)|([\?;].*)$/.test(a)?a:a+".less"},c.prototype.supportsSync=function(){return!1},c.prototype.alwaysMakePathsAbsolute=function(){return!1},c.prototype.isPathAbsolute=function(a){return/^(?:[a-z-]+:|\/|\\)/i.test(a)},c.prototype.join=function(a,b){return a?a+b:b},c.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;d>c&&h.directories[c]===g.directories[c];c++);for(f=h.directories.slice(c),e=g.directories.slice(c),c=0;f.length-1>c;c++)i+="../";for(c=0;e.length-1>c;c++)i+=e[c]+"/";return i},c.prototype.extractUrlParts=function(a,b){var c,d,e=/^((?:[a-z-]+:)?\/+?(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/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;h.length>c;c++)"."===h[c]&&(h.splice(c,1),c-=1);for(c=0;h.length>c;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=c},{}],15:[function(a,b){var c=a("../logger"),d=function(a,b){this.fileManagers=b||[],a=a||{};for(var c=["encodeBase64","mimeLookup","charsetLookup","getSourceMapGenerator"],d=[],e=d.concat(c),f=0;e.length>f;f++){var g=e[f],h=a[g];h?this[g]=h.bind(a):d.length>f&&this.warn("missing required function in environment - 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Please report this issue. continuing."),null==b&&c.warn("getFileManager called with null directory.. 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b=0;a.length>b;b++)this.addPlugin(a[b])},c.prototype.addPlugin=function(a){this.installedPlugins.push(a),a.install(this.less,this)},c.prototype.addVisitor=function(a){this.visitors.push(a)},c.prototype.addPostProcessor=function(a,b){var c;for(c=0;this.postProcessors.length>c&&!(this.postProcessors[c].priority>=b);c++);this.postProcessors.splice(c,0,{postProcessor:a,priority:b})},c.prototype.addFileManager=function(a){this.fileManagers.push(a)},c.prototype.getPostProcessors=function(){for(var a=[],b=0;this.postProcessors.length>b;b++)a.push(this.postProcessors[b].postProcessor);return a},c.prototype.getVisitors=function(){return this.visitors},c.prototype.getFileManagers=function(){return this.fileManagers},b.exports=c},{}],38:[function(a,b){var c="undefined"==typeof Promise?a("promise"):Promise;b.exports=function(a,b){var d=function(a,e,f){if("function"==typeof e&&(f=e,e={}),!f){var g=this;return new 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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;return this.options.sourceMapFileInline&&(a="data:application/json;base64,"+b.encodeBase64(this.sourceMap)),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}},{}],40:[function(a,b){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],0>c&&(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;e.length>i;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}},{}],41:[function(a,b){var c=a("./contexts"),d=a("./visitors"),e=a("./tree");b.exports=function(a,b){b=b||{};var f,g=b.variables,h=new c.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof e.Value||(b instanceof e.Expression||(b=new e.Expression([b])),b=new e.Value([b])),new e.Rule("@"+a,b,!1,null,0)}),h.frames=[new e.Ruleset(null,g)]);var i,j=[],k=[new d.JoinSelectorVisitor,new d.ExtendVisitor,new d.ToCSSVisitor({compress:Boolean(b.compress)})];if(b.pluginManager){var l=b.pluginManager.getVisitors();for(i=0;l.length>i;i++){var m=l[i];m.isPreEvalVisitor?j.push(m):m.isPreVisitor?k.splice(0,0,m):k.push(m)}}for(i=0;j.length>i;i++)j[i].run(a);for(f=a.eval(h),i=0;k.length>i;i++)k[i].run(f);return f}},{"./contexts":10,"./tree":59,"./visitors":84}],42:[function(a,b){var c=a("./node"),d=function(a){this.value=a};d.prototype=new c,d.prototype.type="Alpha",d.prototype.accept=function(a){this.value=a.visit(this.value)
-},d.prototype.eval=function(a){return this.value.eval?new d(this.value.eval(a)):this},d.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=d},{"./node":67}],43:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e){this.value=a,this.index=b,this.mapLines=d,this.currentFileInfo=c,this.rulesetLike="undefined"==typeof e?!1:e};d.prototype=new c,d.prototype.type="Anonymous",d.prototype.eval=function(){return new d(this.value,this.index,this.currentFileInfo,this.mapLines,this.rulesetLike)},d.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},d.prototype.isRulesetLike=function(){return this.rulesetLike},d.prototype.genCSS=function(a,b){b.add(this.value,this.currentFileInfo,this.index,this.mapLines)},b.exports=d},{"./node":67}],44:[function(a,b){var c=a("./node"),d=function(a,b){this.key=a,this.value=b};d.prototype=new c,d.prototype.type="Assignment",d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.eval=function(a){return this.value.eval?new d(this.key,this.value.eval(a)):this},d.prototype.genCSS=function(a,b){b.add(this.key+"="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value)},b.exports=d},{"./node":67}],45:[function(a,b){var c=a("./node"),d=function(a,b,c){this.key=a,this.op=b,this.value=c};d.prototype=new c,d.prototype.type="Attribute",d.prototype.eval=function(a){return new d(this.key.eval?this.key.eval(a):this.key,this.op,this.value&&this.value.eval?this.value.eval(a):this.value)},d.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},d.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=d},{"./node":67}],46:[function(a,b){var c=a("./node"),d=a("../functions/function-caller"),e=function(a,b,c,d){this.name=a,this.args=b,this.index=c,this.currentFileInfo=d};e.prototype=new c,e.prototype.type="Call",e.prototype.accept=function(a){this.args&&(this.args=a.visitArray(this.args))},e.prototype.eval=function(a){var b,c=this.args.map(function(b){return b.eval(a)}),f=new d(this.name,a,this.index,this.currentFileInfo);if(f.isValid())try{if(b=f.call(c),null!=b)return b}catch(g){throw{type:g.type||"Runtime",message:"error evaluating function `"+this.name+"`"+(g.message?": "+g.message:""),index:this.index,filename:this.currentFileInfo.filename}}return new e(this.name,c,this.index,this.currentFileInfo)},e.prototype.genCSS=function(a,b){b.add(this.name+"(",this.currentFileInfo,this.index);for(var c=0;this.args.length>c;c++)this.args[c].genCSS(a,b),this.args.length>c+1&&b.add(", ");b.add(")")},b.exports=e},{"../functions/function-caller":20,"./node":67}],47:[function(a,b){function c(a,b){return Math.min(Math.max(a,0),b)}function d(a){return"#"+a.map(function(a){return a=c(Math.round(a),255),(16>a?"0":"")+a.toString(16)}).join("")}var e=a("./node"),f=a("../data/colors"),g=function(a,b){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};g.prototype=new e,g.prototype.type="Color",g.prototype.luma=function(){var a=this.rgb[0]/255,b=this.rgb[1]/255,c=this.rgb[2]/255;return a=.03928>=a?a/12.92:Math.pow((a+.055)/1.055,2.4),b=.03928>=b?b/12.92:Math.pow((b+.055)/1.055,2.4),c=.03928>=c?c/12.92:Math.pow((c+.055)/1.055,2.4),.2126*a+.7152*b+.0722*c},g.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},g.prototype.toCSS=function(a,b){var d,e,f=a&&a.compress&&!b;if(this.value)return this.value;if(e=this.fround(a,this.alpha),1>e)return"rgba("+this.rgb.map(function(a){return c(Math.round(a),255)}).concat(c(e,1)).join(","+(f?"":" "))+")";if(d=this.toRGB(),f){var g=d.split("");g[1]===g[2]&&g[3]===g[4]&&g[5]===g[6]&&(d="#"+g[1]+g[3]+g[5])}return d},g.prototype.operate=function(a,b,c){for(var d=[],e=this.alpha*(1-c.alpha)+c.alpha,f=0;3>f;f++)d[f]=this._operate(a,b,this.rgb[f],c.rgb[f]);return new g(d,e)},g.prototype.toRGB=function(){return d(this.rgb)},g.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+(e>d?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}},g.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+(e>d?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}},g.prototype.toARGB=function(){return d([255*this.alpha].concat(this.rgb))},g.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},g.fromKeyword=function(a){var b,c=a.toLowerCase();return f.hasOwnProperty(c)?b=new g(f[c].slice(1)):"transparent"===c&&(b=new g([0,0,0],0)),b?(b.value=a,b):void 0},b.exports=g},{"../data/colors":11,"./node":67}],48:[function(a,b){var c=a("./node"),d=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};d.prototype=new c,d.prototype.type="Combinator";var e={"":!0," ":!0,"|":!0};d.prototype.genCSS=function(a,b){var c=a.compress||e[this.value]?"":" ";b.add(c+this.value+c)},b.exports=d},{"./node":67}],49:[function(a,b){var c=a("./node"),d=a("./debug-info"),e=function(a,b,c,d){this.value=a,this.isLineComment=b,this.currentFileInfo=d};e.prototype=new c,e.prototype.type="Comment",e.prototype.genCSS=function(a,b){this.debugInfo&&b.add(d(a,this),this.currentFileInfo,this.index),b.add(this.value)},e.prototype.isSilent=function(a){var b=this.currentFileInfo&&this.currentFileInfo.reference&&!this.isReferenced,c=a.compress&&"!"!==this.value[2];return this.isLineComment||b||c},e.prototype.markReferenced=function(){this.isReferenced=!0},e.prototype.isRulesetLike=function(a){return Boolean(a)},b.exports=e},{"./debug-info":51,"./node":67}],50:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e){this.op=a.trim(),this.lvalue=b,this.rvalue=c,this.index=d,this.negate=e};d.prototype=new c,d.prototype.type="Condition",d.prototype.accept=function(a){this.lvalue=a.visit(this.lvalue),this.rvalue=a.visit(this.rvalue)},d.prototype.eval=function(a){var b=function(a,b,d){switch(a){case"and":return b&&d;case"or":return b||d;default:switch(c.compare(b,d)){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=d},{"./node":67}],51:[function(a,b){var c=function(a,b,d){var e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=c.asComment(b);break;case"mediaquery":e=c.asMediaQuery(b);break;case"all":e=c.asComment(b)+(d||"")+c.asMediaQuery(b)}return e};c.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},c.asMediaQuery=function(a){return"@media -sass-debug-info{filename{font-family:"+("file://"+a.debugInfo.fileName).replace(/([.:\/\\])/g,function(a){return"\\"==a&&(a="/"),"\\"+a})+"}line{font-family:\\00003"+a.debugInfo.lineNumber+"}}\n"},b.exports=c},{}],52:[function(a,b){var c=a("./node"),d=a("../contexts"),e=function(a,b){this.ruleset=a,this.frames=b};e.prototype=new c,e.prototype.type="DetachedRuleset",e.prototype.evalFirst=!0,e.prototype.accept=function(a){this.ruleset=a.visit(this.ruleset)},e.prototype.eval=function(a){var b=this.frames||a.frames.slice(0);return new e(this.ruleset,b)},e.prototype.callEval=function(a){return this.ruleset.eval(this.frames?new d.Eval(a,this.frames.concat(a.frames)):a)},b.exports=e},{"../contexts":10,"./node":67}],53:[function(a,b){var c=a("./node"),d=a("../data/unit-conversions"),e=a("./unit"),f=a("./color"),g=function(a,b){this.value=parseFloat(a),this.unit=b&&b instanceof e?b:new e(b?[b]:void 0)};g.prototype=new c,g.prototype.type="Dimension",g.prototype.accept=function(a){this.unit=a.visit(this.unit)},g.prototype.eval=function(){return this},g.prototype.toColor=function(){return new f([this.value,this.value,this.value])},g.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&&1e-6>c&&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&&1>c&&(d=d.substr(1))}b.add(d),this.unit.genCSS(a,b)},g.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.numerator=c.unit.numerator.slice(0),e.denominator=c.unit.denominator.slice(0);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 g(d,e)},g.prototype.compare=function(a){var b,d;if(!(a instanceof g))return void 0;if(this.unit.isEmpty()||a.unit.isEmpty())b=this,d=a;else if(b=this.unify(),d=a.unify(),0!==b.unit.compare(d.unit))return void 0;return c.numericCompare(b.value,d.value)},g.prototype.unify=function(){return this.convertTo({length:"px",duration:"s",angle:"rad"})},g.prototype.convertTo=function(a){var b,c,e,f,h,i=this.value,j=this.unit.clone(),k={};if("string"==typeof a){for(b in d)d[b].hasOwnProperty(a)&&(k={},k[b]=a);a=k}h=function(a,b){return e.hasOwnProperty(a)?(b?i/=e[a]/e[f]:i*=e[a]/e[f],f):a};for(c in a)a.hasOwnProperty(c)&&(f=a[c],e=d[c],j.map(h));return j.cancel(),new g(i,j)},b.exports=g},{"../data/unit-conversions":13,"./color":47,"./node":67,"./unit":76}],54:[function(a,b){var c=a("./node"),d=a("./ruleset"),e=function(a,b,c,d,e,f,g){this.name=a,this.value=b,c&&(this.rules=c,this.rules.allowImports=!0),this.index=d,this.currentFileInfo=e,this.debugInfo=f,this.isReferenced=g};e.prototype=new c,e.prototype.type="Directive",e.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visit(c)),b&&(this.value=a.visit(b))},e.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},e.prototype.isCharset=function(){return"@charset"===this.name},e.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?("Ruleset"===d.type&&(d=[d]),this.outputRuleset(a,b,d)):b.add(";")},e.prototype.eval=function(a){var b=this.value,c=this.rules;return b&&(b=b.eval(a)),c&&(c=c.eval(a),c.root=!0),new e(this.name,b,c,this.index,this.currentFileInfo,this.debugInfo,this.isReferenced)},e.prototype.variable=function(a){return this.rules?d.prototype.variable.call(this.rules,a):void 0},e.prototype.find=function(){return this.rules?d.prototype.find.apply(this.rules,arguments):void 0},e.prototype.rulesets=function(){return this.rules?d.prototype.rulesets.apply(this.rules):void 0},e.prototype.markReferenced=function(){var a,b;if(this.isReferenced=!0,this.rules)for(b=this.rules.rules,a=0;b.length>a;a++)b[a].markReferenced&&b[a].markReferenced()},e.prototype.getIsReferenced=function(){return!this.currentFileInfo||!this.currentFileInfo.reference||this.isReferenced},e.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;e>d;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;e>d;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=e},{"./node":67,"./ruleset":73}],55:[function(a,b){var c=a("./node"),d=a("./paren"),e=a("./combinator"),f=function(a,b,c,d){this.combinator=a instanceof e?a:new e(a),this.value="string"==typeof b?b.trim():b?b:"",this.index=c,this.currentFileInfo=d};f.prototype=new c,f.prototype.type="Element",f.prototype.accept=function(a){var b=this.value;this.combinator=a.visit(this.combinator),"object"==typeof b&&(this.value=a.visit(b))},f.prototype.eval=function(a){return new f(this.combinator,this.value.eval?this.value.eval(a):this.value,this.index,this.currentFileInfo)},f.prototype.genCSS=function(a,b){b.add(this.toCSS(a),this.currentFileInfo,this.index)},f.prototype.toCSS=function(a){a=a||{};var b=this.value,c=a.firstSelector;return b instanceof d&&(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=f},{"./combinator":48,"./node":67,"./paren":69}],56:[function(a,b){var c=a("./node"),d=a("./paren"),e=a("./comment"),f=function(a){if(this.value=a,!a)throw new Error("Expression requires an array parameter")};f.prototype=new c,f.prototype.type="Expression",f.prototype.accept=function(a){this.value=a.visitArray(this.value)},f.prototype.eval=function(a){var b,c=this.parens&&!this.parensInOp,e=!1;return c&&a.inParenthesis(),this.value.length>1?b=new f(this.value.map(function(b){return b.eval(a)})):1===this.value.length?(this.value[0].parens&&!this.value[0].parensInOp&&(e=!0),b=this.value[0].eval(a)):b=this,c&&a.outOfParenthesis(),this.parens&&this.parensInOp&&!a.isMathOn()&&!e&&(b=new d(b)),b},f.prototype.genCSS=function(a,b){for(var c=0;this.value.length>c;c++)this.value[c].genCSS(a,b),this.value.length>c+1&&b.add(" 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e?this.path.value.value:null},i.prototype.isVariableImport=function(){var a=this.path;return a instanceof e&&(a=a.value),a instanceof f?a.containsVariables():!0},i.prototype.evalForImport=function(a){var b=this.path;return b instanceof e&&(b=b.value),new i(b.eval(a),this.features,this.options,this.index,this.currentFileInfo)},i.prototype.evalPath=function(a){var b=this.path.eval(a),c=this.currentFileInfo&&this.currentFileInfo.rootpath;if(!(b instanceof e)){if(c){var d=b.value;d&&a.isPathRelative(d)&&(b.value=c+d)}b.value=a.normalizePath(b.value)}return b},i.prototype.eval=function(a){var b,c=this.features&&this.features.eval(a);if(this.skip&&("function"==typeof this.skip&&(this.skip=this.skip()),this.skip))return[];if(this.options.inline){var e=new h(this.root,0,{filename:this.importedFilename},!0,!0);return this.features?new d([e],this.features.value):[e]}if(this.css){var f=new i(this.evalPath(a),c,this.options,this.index);if(!f.css&&this.error)throw this.error;return f}return b=new g(null,this.root.rules.slice(0)),b.evalImports(a),this.features?new d(b.rules,this.features.value):b.rules},b.exports=i},{"./anonymous":43,"./media":63,"./node":67,"./quoted":70,"./ruleset":73,"./url":77}],59:[function(a,b){var c={};c.Node=a("./node"),c.Alpha=a("./alpha"),c.Color=a("./color"),c.Directive=a("./directive"),c.DetachedRuleset=a("./detached-ruleset"),c.Operation=a("./operation"),c.Dimension=a("./dimension"),c.Unit=a("./unit"),c.Keyword=a("./keyword"),c.Variable=a("./variable"),c.Ruleset=a("./ruleset"),c.Element=a("./element"),c.Attribute=a("./attribute"),c.Combinator=a("./combinator"),c.Selector=a("./selector"),c.Quoted=a("./quoted"),c.Expression=a("./expression"),c.Rule=a("./rule"),c.Call=a("./call"),c.URL=a("./url"),c.Import=a("./import"),c.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},c.Comment=a("./comment"),c.Anonymous=a("./anonymous"),c.Value=a("./value"),c.JavaScript=a("./javascript"),c.Assignment=a("./assignment"),c.Condition=a("./condition"),c.Paren=a("./paren"),c.Media=a("./media"),c.UnicodeDescriptor=a("./unicode-descriptor"),c.Negative=a("./negative"),c.Extend=a("./extend"),c.RulesetCall=a("./ruleset-call"),b.exports=c},{"./alpha":42,"./anonymous":43,"./assignment":44,"./attribute":45,"./call":46,"./color":47,"./combinator":48,"./comment":49,"./condition":50,"./detached-ruleset":52,"./dimension":53,"./directive":54,"./element":55,"./expression":56,"./extend":57,"./import":58,"./javascript":60,"./keyword":62,"./media":63,"./mixin-call":64,"./mixin-definition":65,"./negative":66,"./node":67,"./operation":68,"./paren":69,"./quoted":70,"./rule":71,"./ruleset":73,"./ruleset-call":72,"./selector":74,"./unicode-descriptor":75,"./unit":76,"./url":77,"./value":78,"./variable":79}],60:[function(a,b){var c=a("./js-eval-node"),d=a("./dimension"),e=a("./quoted"),f=a("./anonymous"),g=function(a,b,c,d){this.escaped=b,this.expression=a,this.index=c,this.currentFileInfo=d};g.prototype=new c,g.prototype.type="JavaScript",g.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a);return"number"==typeof b?new d(b):"string"==typeof b?new e('"'+b+'"',b,this.escaped,this.index):new f(Array.isArray(b)?b.join(", "):b)},b.exports=g},{"./anonymous":43,"./dimension":53,"./js-eval-node":61,"./quoted":70}],61:[function(a,b){var c=a("./node"),d=a("./variable"),e=function(){};e.prototype=new c,e.prototype.evaluateJavaScript=function(a,b){var c,e=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 e.jsify(new d("@"+c,e.index,e.currentFileInfo).eval(b))});try{a=new Function("return 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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),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.variable=function(a){return c.prototype.variable.call(this.rules[0],a)},j.prototype.find=function(){return c.prototype.find.apply(this.rules[0],arguments)},j.prototype.rulesets=function(){return c.prototype.rulesets.apply(this.rules[0])},j.prototype.emptySelectors=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},j.prototype.markReferenced=function(){var a,b=this.rules[0].rules;for(this.rules[0].markReferenced(),this.isReferenced=!0,a=0;b.length>a;a++)b[a].markReferenced&&b[a].markReferenced()},j.prototype.evalTop=function(a){var b=this;if(a.mediaBlocks.length>1){var d=this.emptySelectors();b=new c(d,a.mediaBlocks),b.multiMedia=!0}return delete a.mediaBlocks,delete a.mediaPath,b},j.prototype.evalNested=function(a){var b,e,f=a.mediaPath.concat([this]);for(b=0;f.length>b;b++)e=f[b].features instanceof d?f[b].features.value:f[b].features,f[b]=Array.isArray(e)?e:[e];return this.features=new d(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 c([],[])},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;c.length>d;d++)for(var e=0;a[0].length>e;e++)b.push([a[0][e]].concat(c[d]));return b},j.prototype.bubbleSelectors=function(a){a&&(this.rules=[new c(a.slice(0),[this.rules[0]])])},b.exports=j},{"./anonymous":43,"./directive":54,"./element":55,"./expression":56,"./ruleset":73,"./selector":74,"./value":78}],64:[function(a,b){var c=a("./node"),d=a("./selector"),e=a("./mixin-definition"),f=a("../functions/default"),g=function(a,b,c,e,f){this.selector=new d(a),this.arguments=b&&b.length?b:null,this.index=c,this.currentFileInfo=e,this.important=f};g.prototype=new c,g.prototype.type="MixinCall",g.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments&&(this.arguments=a.visitArray(this.arguments))},g.prototype.eval=function(a){function b(b,c){var d,e;for(k=0;2>k;k++){for(w[k]=!0,f.value(k),d=0;c.length>d&&w[k];d++)e=c[d],e.matchCondition&&(w[k]=w[k]&&e.matchCondition(null,a));b.matchCondition&&(w[k]=w[k]&&b.matchCondition(h,a))}return w[0]||w[1]?w[0]!=w[1]?w[1]?z:A:y:x}var c,d,g,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=!1,v=[],w=[],x=-1,y=0,z=1,A=2;for(h=this.arguments&&this.arguments.map(function(b){return{name:b.name,value:b.value.eval(a)}}),s=function(b){return 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c=a("./selector"),d=a("./element"),e=a("./ruleset"),f=a("./rule"),g=a("./expression"),h=a("../contexts"),i=function(a,b,e,f,g,h){this.name=a,this.selectors=[new c([new d(null,a,this.index,this.currentFileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=e,this._lookups={},this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:a},0),this.frames=h};i.prototype=new e,i.prototype.type="MixinDefinition",i.prototype.evalFirst=!0,i.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))},i.prototype.evalParams=function(a,b,c,d){var i,j,k,l,m,n,o,p,q=new e(null,null),r=this.params.slice(0),s=0;if(b=new h.Eval(b,[q].concat(b.frames)),c)for(c=c.slice(0),s=c.length,k=0;s>k;k++)if(j=c[k],n=j&&j.name){for(o=!1,l=0;r.length>l;l++)if(!d[l]&&n===r[l].name){d[l]=j.value.eval(a),q.prependRule(new 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e(null,d),i.originalRuleset=this,i=i.eval(new h.Eval(a,[this,l].concat(k))),c&&(i=this.makeImportant.apply(i)),i},i.prototype.matchCondition=function(a,b){return this.condition&&!this.condition.eval(new h.Eval(b,[this.evalParams(b,new h.Eval(b,this.frames?this.frames.concat(b.frames):b.frames),a,[])].concat(this.frames).concat(b.frames)))?!1:!0},i.prototype.matchArgs=function(a,b){var c,d=a&&a.length||0;if(this.variadic){if(this.required-1>d)return!1}else{if(this.required>d)return!1;if(d>this.params.length)return!1}c=Math.min(d,this.arity);for(var e=0;c>e;e++)if(!this.params[e].name&&!this.params[e].variadic&&a[e].value.eval(b).toCSS()!=this.params[e].value.eval(b).toCSS())return!1;return!0},b.exports=i},{"../contexts":10,"./element":55,"./expression":56,"./rule":71,"./ruleset":73,"./selector":74}],66:[function(a,b){var c=a("./node"),d=a("./operation"),e=a("./dimension"),f=function(a){this.value=a};f.prototype=new 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void 0;if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length!==b.length)return void 0;for(var d=0;a.length>d;d++)if(0!==c.compare(a[d],b[d]))return void 0;return 0},c.numericCompare=function(a,b){return b>a?-1:a===b?0:a>b?1:void 0},b.exports=c},{}],68:[function(a,b){var c=a("./node"),d=a("./color"),e=a("./dimension"),f=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};f.prototype=new c,f.prototype.type="Operation",f.prototype.accept=function(a){this.operands=a.visit(this.operands)},f.prototype.eval=function(a){var b=this.operands[0].eval(a),c=this.operands[1].eval(a);if(a.isMathOn()){if(b instanceof e&&c instanceof d&&(b=b.toColor()),c instanceof e&&b instanceof d&&(c=c.toColor()),!b.operate)throw{type:"Operation",message:"Operation on an invalid type"};return b.operate(a,this.op,c)}return new f(this.op,[b,c],this.isSpaced)},f.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" 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c=this,d=this.value,g=function(b,d){return String(c.evaluateJavaScript(d,a))},h=function(b,d){var g=new e("@"+d,c.index,c.currentFileInfo).eval(a,!0);
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g(e,b,i,this.merge,this.index,this.currentFileInfo,this.inline,h)}catch(k){throw"number"!=typeof k.index&&(k.index=this.index,k.filename=this.currentFileInfo.filename),k}finally{d&&(a.strictMath=!1)}},g.prototype.makeImportant=function(){return new g(this.name,this.value,"!important",this.merge,this.index,this.currentFileInfo,this.inline)},b.exports=g},{"./keyword":62,"./node":67,"./value":78}],72:[function(a,b){var c=a("./node"),d=a("./variable"),e=function(a){this.variable=a};e.prototype=new c,e.prototype.type="RulesetCall",e.prototype.eval=function(a){var b=new d(this.variable).eval(a);return b.callEval(a)},b.exports=e},{"./node":67,"./variable":79}],73:[function(a,b){var c=a("./node"),d=a("./rule"),e=a("./selector"),f=a("./element"),g=a("../contexts"),h=a("../functions/default"),i=a("./debug-info"),j=function(a,b,c){this.selectors=a,this.rules=b,this._lookups={},this.strictImports=c};j.prototype=new c,j.prototype.type="Ruleset",j.prototype.isRuleset=!0,j.prototype.isRulesetLike=!0,j.prototype.accept=function(a){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))},j.prototype.eval=function(a){var b,c,e,f,g=this.selectors,i=!1;if(g&&(c=g.length)){for(b=[],h.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),f=0;c>f;f++)e=g[f].eval(a),b.push(e),e.evaldCondition&&(i=!0);h.reset()}else i=!0;var k,l,m=this.rules?this.rules.slice(0):null,n=new j(b,m,this.strictImports);n.originalRuleset=this,n.root=this.root,n.firstRoot=this.firstRoot,n.allowImports=this.allowImports,this.debugInfo&&(n.debugInfo=this.debugInfo),i||(m.length=0);var o=a.frames;o.unshift(n);var p=a.selectors;p||(a.selectors=p=[]),p.unshift(this.selectors),(n.root||n.allowImports||!n.strictImports)&&n.evalImports(a);var q=n.rules,r=q?q.length:0;for(f=0;r>f;f++)q[f].evalFirst&&(q[f]=q[f].eval(a));var s=a.mediaBlocks&&a.mediaBlocks.length||0;for(f=0;r>f;f++)"MixinCall"===q[f].type?(m=q[f].eval(a).filter(function(a){return a instanceof d&&a.variable?!n.variable(a.name):!0}),q.splice.apply(q,[f,1].concat(m)),r+=m.length-1,f+=m.length-1,n.resetCache()):"RulesetCall"===q[f].type&&(m=q[f].eval(a).rules.filter(function(a){return a instanceof d&&a.variable?!1:!0}),q.splice.apply(q,[f,1].concat(m)),r+=m.length-1,f+=m.length-1,n.resetCache());for(f=0;q.length>f;f++)k=q[f],k.evalFirst||(q[f]=k=k.eval?k.eval(a):k);for(f=0;q.length>f;f++)if(k=q[f],k instanceof j&&k.selectors&&1===k.selectors.length&&k.selectors[0].isJustParentSelector()){q.splice(f--,1);for(var t=0;k.rules.length>t;t++)l=k.rules[t],l instanceof d&&l.variable||q.splice(++f,0,l)}if(o.shift(),p.shift(),a.mediaBlocks)for(f=s;a.mediaBlocks.length>f;f++)a.mediaBlocks[f].bubbleSelectors(b);return n},j.prototype.evalImports=function(a){var b,c,d=this.rules;if(d)for(b=0;d.length>b;b++)"Import"===d[b].type&&(c=d[b].eval(a),c&&c.length?(d.splice.apply(d,[b,1].concat(c)),b+=c.length-1):d.splice(b,1,c),this.resetCache())},j.prototype.makeImportant=function(){return this.rules=this.rules.map(function(a){return a.makeImportant?a.makeImportant():a}),this},j.prototype.matchArgs=function(a){return!a||0===a.length},j.prototype.matchCondition=function(a,b){var c=this.selectors[this.selectors.length-1];return c.evaldCondition?c.condition&&!c.condition.eval(new g.Eval(b,b.frames))?!1:!0:!1},j.prototype.resetCache=function(){this._rulesets=null,this._variables=null,this._lookups={}},j.prototype.variables=function(){return this._variables||(this._variables=this.rules?this.rules.reduce(function(a,b){if(b instanceof d&&b.variable===!0&&(a[b.name]=b),"Import"===b.type&&b.root&&b.root.variables){var c=b.root.variables();for(var e in c)c.hasOwnProperty(e)&&(a[e]=c[e])}return a},{}):{}),this._variables},j.prototype.variable=function(a){return this.variables()[a]},j.prototype.rulesets=function(){if(!this.rules)return null;var a,b,c=[],d=this.rules,e=d.length;for(a=0;e>a;a++)b=d[a],b.isRuleset&&c.push(b);return c},j.prototype.prependRule=function(a){var b=this.rules;b?b.unshift(a):this.rules=[a]},j.prototype.find=function(a,b,c){b=b||this;var d,f,g=[],h=a.toCSS();return h in this._lookups?this._lookups[h]:(this.rulesets().forEach(function(h){if(h!==b)for(var i=0;h.selectors.length>i;i++)if(d=a.match(h.selectors[i])){if(a.elements.length>d){if(!c||c(h)){f=h.find(new e(a.elements.slice(d)),b,c);for(var j=0;f.length>j;++j)f[j].path.push(h);Array.prototype.push.apply(g,f)}}else g.push({rule:h,path:[]});break}}),this._lookups[h]=g,g)},j.prototype.genCSS=function(a,b){function c(a,b){return"boolean"==typeof a.isRulesetLike?a.isRulesetLike:"function"==typeof a.isRulesetLike?a.isRulesetLike(b):!1}var d,e,f,g,h,j,k=[],l=[],m=[];a.tabLevel=a.tabLevel||0,this.root||a.tabLevel++;var n,o=a.compress?"":Array(a.tabLevel+1).join("  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a;if(this.selectors)for(a=0;this.selectors.length>a;a++)this.selectors[a].markReferenced();if(this.rules)for(a=0;this.rules.length>a;a++)this.rules[a].markReferenced&&this.rules[a].markReferenced()},j.prototype.getIsReferenced=function(){var a,b,c,d;if(this.paths)for(a=0;this.paths.length>a;a++)for(c=this.paths[a],b=0;c.length>b;b++)if(c[b].getIsReferenced&&c[b].getIsReferenced())return!0;if(this.selectors)for(a=0;this.selectors.length>a;a++)if(d=this.selectors[a],d.getIsReferenced&&d.getIsReferenced())return!0;return!1},j.prototype.joinSelectors=function(a,b,c){for(var d=0;c.length>d;d++)this.joinSelector(a,b,c[d])},j.prototype.joinSelector=function(a,b,c){var d,e,g,h,i,j,k,l,m,n,o,p,q,r,s;for(d=0;c.elements.length>d;d++)j=c.elements[d],"&"===j.value&&(h=!0);if(h){for(r=[],i=[[]],d=0;c.elements.length>d;d++)if(j=c.elements[d],"&"!==j.value)r.push(j);else{for(s=[],r.length>0&&this.mergeElementsOnToSelectors(r,i),e=0;i.length>e;e++)if(k=i[e],0===b.length)k.length>0&&(k[0].elements=k[0].elements.slice(0),k[0].elements.push(new f(j.combinator,"",j.index,j.currentFileInfo))),s.push(k);else for(g=0;b.length>g;g++){if(l=b[g],m=[],n=[],p=!0,k.length>0?(m=k.slice(0),q=m.pop(),o=c.createDerived(q.elements.slice(0)),p=!1):o=c.createDerived([]),l.length>1&&(n=n.concat(l.slice(1))),l.length>0){p=!1;var t=j.combinator,u=l[0].elements[0];t.emptyOrWhitespace&&!u.combinator.emptyOrWhitespace&&(t=u.combinator),o.elements.push(new f(t,u.value,j.index,j.currentFileInfo)),o.elements=o.elements.concat(l[0].elements.slice(1))}p||m.push(o),m=m.concat(n),s.push(m)}i=s,r=[]}for(r.length>0&&this.mergeElementsOnToSelectors(r,i),d=0;i.length>d;d++)i[d].length>0&&a.push(i[d])}else if(b.length>0)for(d=0;b.length>d;d++)a.push(b[d].concat(c));else a.push([c])},j.prototype.mergeElementsOnToSelectors=function(a,b){var c,d;if(0===b.length)return void b.push([new e(a)]);for(c=0;b.length>c;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 e(a))},b.exports=j},{"../contexts":10,"../functions/default":19,"./debug-info":51,"./element":55,"./node":67,"./rule":71,"./selector":74}],74:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e,f){this.elements=a,this.extendList=b,this.condition=c,this.currentFileInfo=e||{},this.isReferenced=f,c||(this.evaldCondition=!0)};d.prototype=new c,d.prototype.type="Selector",d.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))},d.prototype.createDerived=function(a,b,c){c=null!=c?c:this.evaldCondition;var e=new d(a,b||this.extendList,null,this.index,this.currentFileInfo,this.isReferenced);return e.evaldCondition=c,e.mediaEmpty=this.mediaEmpty,e},d.prototype.match=function(a){var b,c,d=this.elements,e=d.length;if(a.CacheElements(),b=a._elements.length,0===b||b>e)return 0;for(c=0;b>c;c++)if(d[c].value!==a._elements[c])return 0;return b},d.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}},d.prototype.isJustParentSelector=function(){return!this.mediaEmpty&&1===this.elements.length&&"&"===this.elements[0].value&&(" "===this.elements[0].combinator.value||""===this.elements[0].combinator.value)},d.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)},d.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;this.elements.length>c;c++)d=this.elements[c],d.genCSS(a,b)},d.prototype.markReferenced=function(){this.isReferenced=!0},d.prototype.getIsReferenced=function(){return!this.currentFileInfo.reference||this.isReferenced},d.prototype.getIsOutput=function(){return this.evaldCondition},b.exports=d},{"./node":67}],75:[function(a,b){var c=a("./node"),d=function(a){this.value=a};d.prototype=new c,d.prototype.type="UnicodeDescriptor",b.exports=d},{"./node":67}],76:[function(a,b){var c=a("./node"),d=a("../data/unit-conversions"),e=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])};e.prototype=new c,e.prototype.type="Unit",e.prototype.clone=function(){return new e(this.numerator.slice(0),this.denominator.slice(0),this.backupUnit)},e.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)},e.prototype.toString=function(){var a,b=this.numerator.join("*");for(a=0;this.denominator.length>a;a++)b+="/"+this.denominator[a];return b},e.prototype.compare=function(a){return this.is(a.toString())?0:void 0},e.prototype.is=function(a){return this.toString().toUpperCase()===a.toUpperCase()},e.prototype.isLength=function(){return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/))},e.prototype.isEmpty=function(){return 0===this.numerator.length&&0===this.denominator.length},e.prototype.isSingular=function(){return 1>=this.numerator.length&&0===this.denominator.length},e.prototype.map=function(a){var b;for(b=0;this.numerator.length>b;b++)this.numerator[b]=a(this.numerator[b],!1);for(b=0;this.denominator.length>b;b++)this.denominator[b]=a(this.denominator[b],!0)},e.prototype.usedUnits=function(){var a,b,c={};b=function(b){return a.hasOwnProperty(b)&&!c[e]&&(c[e]=b),b};for(var e in d)d.hasOwnProperty(e)&&(a=d[e],this.map(b));return c},e.prototype.cancel=function(){var a,b,c={};for(b=0;this.numerator.length>b;b++)a=this.numerator[b],c[a]=(c[a]||0)+1;for(b=0;this.denominator.length>b;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;d>b;b++)this.numerator.push(a);else if(0>d)for(b=0;-d>b;b++)this.denominator.push(a)}this.numerator.sort(),this.denominator.sort()},b.exports=e},{"../data/unit-conversions":13,"./node":67}],77:[function(a,b){var c=a("./node"),d=function(a,b,c,d){this.value=a,this.currentFileInfo=c,this.index=b,this.isEvald=d};d.prototype=new c,d.prototype.type="Url",d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.genCSS=function(a,b){b.add("url("),this.value.genCSS(a,b),b.add(")")},d.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 e=-1===c.value.indexOf("?")?"?":"&",f=e+a.urlArgs;-1!==c.value.indexOf("#")?c.value=c.value.replace("#",f+"#"):c.value+=f}return new d(c,this.index,this.currentFileInfo,!0)},b.exports=d},{"./node":67}],78:[function(a,b){var c=a("./node"),d=function(a){if(this.value=a,!a)throw new Error("Value requires an array argument")};d.prototype=new c,d.prototype.type="Value",d.prototype.accept=function(a){this.value&&(this.value=a.visitArray(this.value))},d.prototype.eval=function(a){return 1===this.value.length?this.value[0].eval(a):new d(this.value.map(function(b){return b.eval(a)}))},d.prototype.genCSS=function(a,b){var c;for(c=0;this.value.length>c;c++)this.value[c].genCSS(a,b),this.value.length>c+1&&b.add(a&&a.compress?",":", ")},b.exports=d},{"./node":67}],79:[function(a,b){var c=a("./node"),d=function(a,b,c){this.name=a,this.index=b,this.currentFileInfo=c||{}};d.prototype=new c,d.prototype.type="Variable",d.prototype.eval=function(a){var b,c=this.name;if(0===c.indexOf("@@")&&(c="@"+new d(c.slice(1),this.index,this.currentFileInfo).eval(a).value),this.evaluating)throw{type:"Name",message:"Recursive variable definition 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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){if(!a.root){var b,d,e,f,g=[],h=a.rules,i=h?h.length:0;for(b=0;i>b;b++)a.rules[b]instanceof c.Extend&&(g.push(h[b]),a.extendOnEveryPath=!0);var j=a.paths;for(b=0;j.length>b;b++){var k=j[b],l=k[k.length-1],m=l.extendList;for(f=m?m.slice(0).concat(g):g,f&&(f=f.map(function(a){return a.clone()})),d=0;f.length>d;d++)this.foundExtends=!0,e=f[d],e.findSelfSelectors(k),e.ruleset=a,0===d&&(e.firstExtendOnThisSelectorPath=!0),this.allExtendsStack[this.allExtendsStack.length-1].push(e)}this.contexts.push(a.selectors)}},visitRulesetOut:function(a){a.root||(this.contexts.length=this.contexts.length-1)},visitMedia:function(a){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitMediaOut:function(){this.allExtendsStack.length=this.allExtendsStack.length-1},visitDirective:function(a){a.allExtends=[],this.allExtendsStack.push(a.allExtends)},visitDirectiveOut:function(){this.allExtendsStack.length=this.allExtendsStack.length-1}};var g=function(){this._visitor=new d(this)};g.prototype={run:function(a){var b=new f;if(this.extendIndicies={},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 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b=0;a.length>b;b++)this.addPlugin(a[b])},c.prototype.addPlugin=function(a){this.installedPlugins.push(a),a.install(this.less,this)},c.prototype.addVisitor=function(a){this.visitors.push(a)},c.prototype.addPostProcessor=function(a,b){var c;for(c=0;this.postProcessors.length>c&&!(this.postProcessors[c].priority>=b);c++);this.postProcessors.splice(c,0,{postProcessor:a,priority:b})},c.prototype.addFileManager=function(a){this.fileManagers.push(a)},c.prototype.getPostProcessors=function(){for(var a=[],b=0;this.postProcessors.length>b;b++)a.push(this.postProcessors[b].postProcessor);return a},c.prototype.getVisitors=function(){return this.visitors},c.prototype.getFileManagers=function(){return this.fileManagers},b.exports=c},{}],38:[function(a,b){var c="undefined"==typeof Promise?a("promise"):Promise;b.exports=function(a,b){var d=function(a,e,f){if("function"==typeof e&&(f=e,e={}),!f){var g=this;return new 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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],0>c&&(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;e.length>i;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}},{}],41:[function(a,b){var c=a("./contexts"),d=a("./visitors"),e=a("./tree");b.exports=function(a,b){b=b||{};var f,g=b.variables,h=new c.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof e.Value||(b instanceof e.Expression||(b=new e.Expression([b])),b=new e.Value([b])),new e.Rule("@"+a,b,!1,null,0)}),h.frames=[new e.Ruleset(null,g)]);var i,j=[],k=[new d.JoinSelectorVisitor,new d.ExtendVisitor,new d.ToCSSVisitor({compress:Boolean(b.compress)})];if(b.pluginManager){var l=b.pluginManager.getVisitors();for(i=0;l.length>i;i++){var m=l[i];m.isPreEvalVisitor?j.push(m):m.isPreVisitor?k.splice(0,0,m):k.push(m)}}for(i=0;j.length>i;i++)j[i].run(a);for(f=a.eval(h),i=0;k.length>i;i++)k[i].run(f);return f}},{"./contexts":10,"./tree":59,"./visitors":84}],42:[function(a,b){var c=a("./node"),d=function(a){this.value=a};d.prototype=new c,d.prototype.type="Alpha",d.prototype.accept=function(a){this.value=a.visit(this.value)
+},d.prototype.eval=function(a){return this.value.eval?new d(this.value.eval(a)):this},d.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=d},{"./node":67}],43:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e){this.value=a,this.index=b,this.mapLines=d,this.currentFileInfo=c,this.rulesetLike="undefined"==typeof e?!1:e};d.prototype=new c,d.prototype.type="Anonymous",d.prototype.eval=function(){return new d(this.value,this.index,this.currentFileInfo,this.mapLines,this.rulesetLike)},d.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},d.prototype.isRulesetLike=function(){return this.rulesetLike},d.prototype.genCSS=function(a,b){b.add(this.value,this.currentFileInfo,this.index,this.mapLines)},b.exports=d},{"./node":67}],44:[function(a,b){var c=a("./node"),d=function(a,b){this.key=a,this.value=b};d.prototype=new 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c=a("./node"),d=a("../functions/function-caller"),e=function(a,b,c,d){this.name=a,this.args=b,this.index=c,this.currentFileInfo=d};e.prototype=new c,e.prototype.type="Call",e.prototype.accept=function(a){this.args&&(this.args=a.visitArray(this.args))},e.prototype.eval=function(a){var b,c=this.args.map(function(b){return b.eval(a)}),f=new d(this.name,a,this.index,this.currentFileInfo);if(f.isValid())try{if(b=f.call(c),null!=b)return b}catch(g){throw{type:g.type||"Runtime",message:"error evaluating function `"+this.name+"`"+(g.message?": "+g.message:""),index:this.index,filename:this.currentFileInfo.filename}}return new e(this.name,c,this.index,this.currentFileInfo)},e.prototype.genCSS=function(a,b){b.add(this.name+"(",this.currentFileInfo,this.index);for(var c=0;this.args.length>c;c++)this.args[c].genCSS(a,b),this.args.length>c+1&&b.add(", ");b.add(")")},b.exports=e},{"../functions/function-caller":20,"./node":67}],47:[function(a,b){function c(a,b){return Math.min(Math.max(a,0),b)}function d(a){return"#"+a.map(function(a){return a=c(Math.round(a),255),(16>a?"0":"")+a.toString(16)}).join("")}var e=a("./node"),f=a("../data/colors"),g=function(a,b){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};g.prototype=new e,g.prototype.type="Color",g.prototype.luma=function(){var a=this.rgb[0]/255,b=this.rgb[1]/255,c=this.rgb[2]/255;return a=.03928>=a?a/12.92:Math.pow((a+.055)/1.055,2.4),b=.03928>=b?b/12.92:Math.pow((b+.055)/1.055,2.4),c=.03928>=c?c/12.92:Math.pow((c+.055)/1.055,2.4),.2126*a+.7152*b+.0722*c},g.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},g.prototype.toCSS=function(a,b){var d,e,f=a&&a.compress&&!b;if(this.value)return this.value;if(e=this.fround(a,this.alpha),1>e)return"rgba("+this.rgb.map(function(a){return c(Math.round(a),255)}).concat(c(e,1)).join(","+(f?"":" 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d([255*this.alpha].concat(this.rgb))},g.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},g.fromKeyword=function(a){var b,c=a.toLowerCase();return f.hasOwnProperty(c)?b=new g(f[c].slice(1)):"transparent"===c&&(b=new g([0,0,0],0)),b?(b.value=a,b):void 0},b.exports=g},{"../data/colors":11,"./node":67}],48:[function(a,b){var c=a("./node"),d=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};d.prototype=new c,d.prototype.type="Combinator";var e={"":!0," ":!0,"|":!0};d.prototype.genCSS=function(a,b){var c=a.compress||e[this.value]?"":" ";b.add(c+this.value+c)},b.exports=d},{"./node":67}],49:[function(a,b){var c=a("./node"),d=a("./debug-info"),e=function(a,b,c,d){this.value=a,this.isLineComment=b,this.currentFileInfo=d};e.prototype=new c,e.prototype.type="Comment",e.prototype.genCSS=function(a,b){this.debugInfo&&b.add(d(a,this),this.currentFileInfo,this.index),b.add(this.value)},e.prototype.isSilent=function(a){var b=this.currentFileInfo&&this.currentFileInfo.reference&&!this.isReferenced,c=a.compress&&"!"!==this.value[2];return this.isLineComment||b||c},e.prototype.markReferenced=function(){this.isReferenced=!0},e.prototype.isRulesetLike=function(a){return Boolean(a)},b.exports=e},{"./debug-info":51,"./node":67}],50:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e){this.op=a.trim(),this.lvalue=b,this.rvalue=c,this.index=d,this.negate=e};d.prototype=new c,d.prototype.type="Condition",d.prototype.accept=function(a){this.lvalue=a.visit(this.lvalue),this.rvalue=a.visit(this.rvalue)},d.prototype.eval=function(a){var b=function(a,b,d){switch(a){case"and":return b&&d;case"or":return b||d;default:switch(c.compare(b,d)){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=d},{"./node":67}],51:[function(a,b){var c=function(a,b,d){var e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=c.asComment(b);break;case"mediaquery":e=c.asMediaQuery(b);break;case"all":e=c.asComment(b)+(d||"")+c.asMediaQuery(b)}return e};c.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},c.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=c},{}],52:[function(a,b){var c=a("./node"),d=a("../contexts"),e=function(a,b){this.ruleset=a,this.frames=b};e.prototype=new c,e.prototype.type="DetachedRuleset",e.prototype.evalFirst=!0,e.prototype.accept=function(a){this.ruleset=a.visit(this.ruleset)},e.prototype.eval=function(a){var b=this.frames||a.frames.slice(0);return new e(this.ruleset,b)},e.prototype.callEval=function(a){return this.ruleset.eval(this.frames?new d.Eval(a,this.frames.concat(a.frames)):a)},b.exports=e},{"../contexts":10,"./node":67}],53:[function(a,b){var c=a("./node"),d=a("../data/unit-conversions"),e=a("./unit"),f=a("./color"),g=function(a,b){this.value=parseFloat(a),this.unit=b&&b instanceof e?b:new e(b?[b]:void 0)};g.prototype=new c,g.prototype.type="Dimension",g.prototype.accept=function(a){this.unit=a.visit(this.unit)},g.prototype.eval=function(){return this},g.prototype.toColor=function(){return new f([this.value,this.value,this.value])},g.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&&1e-6>c&&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&&1>c&&(d=d.substr(1))}b.add(d),this.unit.genCSS(a,b)},g.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.numerator=c.unit.numerator.slice(0),e.denominator=c.unit.denominator.slice(0);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 g(d,e)},g.prototype.compare=function(a){var b,d;if(!(a instanceof g))return void 0;if(this.unit.isEmpty()||a.unit.isEmpty())b=this,d=a;else if(b=this.unify(),d=a.unify(),0!==b.unit.compare(d.unit))return void 0;return c.numericCompare(b.value,d.value)},g.prototype.unify=function(){return this.convertTo({length:"px",duration:"s",angle:"rad"})},g.prototype.convertTo=function(a){var b,c,e,f,h,i=this.value,j=this.unit.clone(),k={};if("string"==typeof a){for(b in d)d[b].hasOwnProperty(a)&&(k={},k[b]=a);a=k}h=function(a,b){return e.hasOwnProperty(a)?(b?i/=e[a]/e[f]:i*=e[a]/e[f],f):a};for(c in a)a.hasOwnProperty(c)&&(f=a[c],e=d[c],j.map(h));return j.cancel(),new g(i,j)},b.exports=g},{"../data/unit-conversions":13,"./color":47,"./node":67,"./unit":76}],54:[function(a,b){var c=a("./node"),d=a("./ruleset"),e=function(a,b,c,d,e,f,g){this.name=a,this.value=b,c&&(this.rules=c,this.rules.allowImports=!0),this.index=d,this.currentFileInfo=e,this.debugInfo=f,this.isReferenced=g};e.prototype=new c,e.prototype.type="Directive",e.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visit(c)),b&&(this.value=a.visit(b))},e.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},e.prototype.isCharset=function(){return"@charset"===this.name},e.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?("Ruleset"===d.type&&(d=[d]),this.outputRuleset(a,b,d)):b.add(";")},e.prototype.eval=function(a){var b=this.value,c=this.rules;return b&&(b=b.eval(a)),c&&(c=c.eval(a),c.root=!0),new e(this.name,b,c,this.index,this.currentFileInfo,this.debugInfo,this.isReferenced)},e.prototype.variable=function(a){return this.rules?d.prototype.variable.call(this.rules,a):void 0},e.prototype.find=function(){return this.rules?d.prototype.find.apply(this.rules,arguments):void 0},e.prototype.rulesets=function(){return this.rules?d.prototype.rulesets.apply(this.rules):void 0},e.prototype.markReferenced=function(){var a,b;if(this.isReferenced=!0,this.rules)for(b=this.rules.rules,a=0;b.length>a;a++)b[a].markReferenced&&b[a].markReferenced()},e.prototype.getIsReferenced=function(){return!this.currentFileInfo||!this.currentFileInfo.reference||this.isReferenced},e.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;e>d;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;e>d;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=e},{"./node":67,"./ruleset":73}],55:[function(a,b){var c=a("./node"),d=a("./paren"),e=a("./combinator"),f=function(a,b,c,d){this.combinator=a instanceof e?a:new e(a),this.value="string"==typeof b?b.trim():b?b:"",this.index=c,this.currentFileInfo=d};f.prototype=new c,f.prototype.type="Element",f.prototype.accept=function(a){var b=this.value;this.combinator=a.visit(this.combinator),"object"==typeof b&&(this.value=a.visit(b))},f.prototype.eval=function(a){return new f(this.combinator,this.value.eval?this.value.eval(a):this.value,this.index,this.currentFileInfo)},f.prototype.genCSS=function(a,b){b.add(this.toCSS(a),this.currentFileInfo,this.index)},f.prototype.toCSS=function(a){a=a||{};var b=this.value,c=a.firstSelector;return b instanceof d&&(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=f},{"./combinator":48,"./node":67,"./paren":69}],56:[function(a,b){var c=a("./node"),d=a("./paren"),e=a("./comment"),f=function(a){if(this.value=a,!a)throw new Error("Expression requires an array parameter")};f.prototype=new c,f.prototype.type="Expression",f.prototype.accept=function(a){this.value=a.visitArray(this.value)},f.prototype.eval=function(a){var b,c=this.parens&&!this.parensInOp,e=!1;return c&&a.inParenthesis(),this.value.length>1?b=new f(this.value.map(function(b){return b.eval(a)})):1===this.value.length?(this.value[0].parens&&!this.value[0].parensInOp&&(e=!0),b=this.value[0].eval(a)):b=this,c&&a.outOfParenthesis(),this.parens&&this.parensInOp&&!a.isMathOn()&&!e&&(b=new d(b)),b},f.prototype.genCSS=function(a,b){for(var c=0;this.value.length>c;c++)this.value[c].genCSS(a,b),this.value.length>c+1&&b.add(" 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c={};c.Node=a("./node"),c.Alpha=a("./alpha"),c.Color=a("./color"),c.Directive=a("./directive"),c.DetachedRuleset=a("./detached-ruleset"),c.Operation=a("./operation"),c.Dimension=a("./dimension"),c.Unit=a("./unit"),c.Keyword=a("./keyword"),c.Variable=a("./variable"),c.Ruleset=a("./ruleset"),c.Element=a("./element"),c.Attribute=a("./attribute"),c.Combinator=a("./combinator"),c.Selector=a("./selector"),c.Quoted=a("./quoted"),c.Expression=a("./expression"),c.Rule=a("./rule"),c.Call=a("./call"),c.URL=a("./url"),c.Import=a("./import"),c.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},c.Comment=a("./comment"),c.Anonymous=a("./anonymous"),c.Value=a("./value"),c.JavaScript=a("./javascript"),c.Assignment=a("./assignment"),c.Condition=a("./condition"),c.Paren=a("./paren"),c.Media=a("./media"),c.UnicodeDescriptor=a("./unicode-descriptor"),c.Negative=a("./negative"),c.Extend=a("./extend"),c.RulesetCall=a("./ruleset-call"),b.exports=c},{"./alpha":42,"./anonymous":43,"./assignment":44,"./attribute":45,"./call":46,"./color":47,"./combinator":48,"./comment":49,"./condition":50,"./detached-ruleset":52,"./dimension":53,"./directive":54,"./element":55,"./expression":56,"./extend":57,"./import":58,"./javascript":60,"./keyword":62,"./media":63,"./mixin-call":64,"./mixin-definition":65,"./negative":66,"./node":67,"./operation":68,"./paren":69,"./quoted":70,"./rule":71,"./ruleset":73,"./ruleset-call":72,"./selector":74,"./unicode-descriptor":75,"./unit":76,"./url":77,"./value":78,"./variable":79}],60:[function(a,b){var c=a("./js-eval-node"),d=a("./dimension"),e=a("./quoted"),f=a("./anonymous"),g=function(a,b,c,d){this.escaped=b,this.expression=a,this.index=c,this.currentFileInfo=d};g.prototype=new c,g.prototype.type="JavaScript",g.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a);return"number"==typeof b?new d(b):"string"==typeof b?new e('"'+b+'"',b,this.escaped,this.index):new f(Array.isArray(b)?b.join(", "):b)},b.exports=g},{"./anonymous":43,"./dimension":53,"./js-eval-node":61,"./quoted":70}],61:[function(a,b){var c=a("./node"),d=a("./variable"),e=function(){};e.prototype=new c,e.prototype.evaluateJavaScript=function(a,b){var c,e=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 e.jsify(new d("@"+c,e.index,e.currentFileInfo).eval(b))});try{a=new Function("return 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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),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.variable=function(a){return c.prototype.variable.call(this.rules[0],a)},j.prototype.find=function(){return c.prototype.find.apply(this.rules[0],arguments)},j.prototype.rulesets=function(){return c.prototype.rulesets.apply(this.rules[0])},j.prototype.emptySelectors=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},j.prototype.markReferenced=function(){var a,b=this.rules[0].rules;for(this.rules[0].markReferenced(),this.isReferenced=!0,a=0;b.length>a;a++)b[a].markReferenced&&b[a].markReferenced()},j.prototype.evalTop=function(a){var b=this;if(a.mediaBlocks.length>1){var d=this.emptySelectors();b=new c(d,a.mediaBlocks),b.multiMedia=!0}return delete a.mediaBlocks,delete a.mediaPath,b},j.prototype.evalNested=function(a){var b,e,f=a.mediaPath.concat([this]);for(b=0;f.length>b;b++)e=f[b].features instanceof d?f[b].features.value:f[b].features,f[b]=Array.isArray(e)?e:[e];return this.features=new d(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 c([],[])},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;c.length>d;d++)for(var e=0;a[0].length>e;e++)b.push([a[0][e]].concat(c[d]));return b},j.prototype.bubbleSelectors=function(a){a&&(this.rules=[new c(a.slice(0),[this.rules[0]])])},b.exports=j},{"./anonymous":43,"./directive":54,"./element":55,"./expression":56,"./ruleset":73,"./selector":74,"./value":78}],64:[function(a,b){var c=a("./node"),d=a("./selector"),e=a("./mixin-definition"),f=a("../functions/default"),g=function(a,b,c,e,f){this.selector=new d(a),this.arguments=b&&b.length?b:null,this.index=c,this.currentFileInfo=e,this.important=f};g.prototype=new c,g.prototype.type="MixinCall",g.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments&&(this.arguments=a.visitArray(this.arguments))},g.prototype.eval=function(a){function b(b,c){var d,e;for(k=0;2>k;k++){for(w[k]=!0,f.value(k),d=0;c.length>d&&w[k];d++)e=c[d],e.matchCondition&&(w[k]=w[k]&&e.matchCondition(null,a));b.matchCondition&&(w[k]=w[k]&&b.matchCondition(h,a))}return w[0]||w[1]?w[0]!=w[1]?w[1]?z:A:y:x}var c,d,g,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=!1,v=[],w=[],x=-1,y=0,z=1,A=2;for(h=this.arguments&&this.arguments.map(function(b){return{name:b.name,value:b.value.eval(a)}}),s=function(b){return 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c=a("./selector"),d=a("./element"),e=a("./ruleset"),f=a("./rule"),g=a("./expression"),h=a("../contexts"),i=function(a,b,e,f,g,h){this.name=a,this.selectors=[new c([new d(null,a,this.index,this.currentFileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=e,this._lookups={},this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:a},0),this.frames=h};i.prototype=new e,i.prototype.type="MixinDefinition",i.prototype.evalFirst=!0,i.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))},i.prototype.evalParams=function(a,b,c,d){var i,j,k,l,m,n,o,p,q=new e(null,null),r=this.params.slice(0),s=0;if(b=new h.Eval(b,[q].concat(b.frames)),c)for(c=c.slice(0),s=c.length,k=0;s>k;k++)if(j=c[k],n=j&&j.name){for(o=!1,l=0;r.length>l;l++)if(!d[l]&&n===r[l].name){d[l]=j.value.eval(a),q.prependRule(new 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void 0;if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length!==b.length)return void 0;for(var d=0;a.length>d;d++)if(0!==c.compare(a[d],b[d]))return void 0;return 0},c.numericCompare=function(a,b){return b>a?-1:a===b?0:a>b?1:void 0},b.exports=c},{}],68:[function(a,b){var c=a("./node"),d=a("./color"),e=a("./dimension"),f=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};f.prototype=new c,f.prototype.type="Operation",f.prototype.accept=function(a){this.operands=a.visit(this.operands)},f.prototype.eval=function(a){var b=this.operands[0].eval(a),c=this.operands[1].eval(a);if(a.isMathOn()){if(b instanceof e&&c instanceof d&&(b=b.toColor()),c instanceof e&&b instanceof d&&(c=c.toColor()),!b.operate)throw{type:"Operation",message:"Operation on an invalid type"};return b.operate(a,this.op,c)}return new f(this.op,[b,c],this.isSpaced)},f.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" 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c=this,d=this.value,g=function(b,d){return String(c.evaluateJavaScript(d,a))},h=function(b,d){var g=new e("@"+d,c.index,c.currentFileInfo).eval(a,!0);
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g(e,b,i,this.merge,this.index,this.currentFileInfo,this.inline,h)}catch(k){throw"number"!=typeof k.index&&(k.index=this.index,k.filename=this.currentFileInfo.filename),k}finally{d&&(a.strictMath=!1)}},g.prototype.makeImportant=function(){return new g(this.name,this.value,"!important",this.merge,this.index,this.currentFileInfo,this.inline)},b.exports=g},{"./keyword":62,"./node":67,"./value":78}],72:[function(a,b){var c=a("./node"),d=a("./variable"),e=function(a){this.variable=a};e.prototype=new c,e.prototype.type="RulesetCall",e.prototype.eval=function(a){var b=new d(this.variable).eval(a);return b.callEval(a)},b.exports=e},{"./node":67,"./variable":79}],73:[function(a,b){var c=a("./node"),d=a("./rule"),e=a("./selector"),f=a("./element"),g=a("./paren"),h=a("../contexts"),i=a("../functions/default"),j=a("./debug-info"),k=function(a,b,c){this.selectors=a,this.rules=b,this._lookups={},this.strictImports=c};k.prototype=new c,k.prototype.type="Ruleset",k.prototype.isRuleset=!0,k.prototype.isRulesetLike=!0,k.prototype.accept=function(a){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))},k.prototype.eval=function(a){var b,c,e,f,g=this.selectors,h=!1;if(g&&(c=g.length)){for(b=[],i.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),f=0;c>f;f++)e=g[f].eval(a),b.push(e),e.evaldCondition&&(h=!0);i.reset()}else h=!0;var j,l,m=this.rules?this.rules.slice(0):null,n=new k(b,m,this.strictImports);n.originalRuleset=this,n.root=this.root,n.firstRoot=this.firstRoot,n.allowImports=this.allowImports,this.debugInfo&&(n.debugInfo=this.debugInfo),h||(m.length=0);var o=a.frames;o.unshift(n);var p=a.selectors;p||(a.selectors=p=[]),p.unshift(this.selectors),(n.root||n.allowImports||!n.strictImports)&&n.evalImports(a);var 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a;if(this.selectors)for(a=0;this.selectors.length>a;a++)this.selectors[a].markReferenced();if(this.rules)for(a=0;this.rules.length>a;a++)this.rules[a].markReferenced&&this.rules[a].markReferenced()},k.prototype.getIsReferenced=function(){var a,b,c,d;if(this.paths)for(a=0;this.paths.length>a;a++)for(c=this.paths[a],b=0;c.length>b;b++)if(c[b].getIsReferenced&&c[b].getIsReferenced())return!0;if(this.selectors)for(a=0;this.selectors.length>a;a++)if(d=this.selectors[a],d.getIsReferenced&&d.getIsReferenced())return!0;return!1},k.prototype.joinSelectors=function(a,b,c){for(var d=0;c.length>d;d++)this.joinSelector(a,b,c[d])},k.prototype.joinSelector=function(a,b,c){function d(a,b){var c,d;if(0===a.length)c=new g(a[0]);else{var h=[];for(d=0;a.length>d;d++)h.push(new f(null,a[d],b.index,b.currentFileInfo));c=new g(new e(h))}return c}function h(a,b){var c,d;return c=new f(null,a,b.index,b.currentFileInfo),d=new e([c])}function i(a,b,c){function e(a){var 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f(i,j.value,c.index,c.currentFileInfo)),h.elements=h.elements.concat(b[0].elements.slice(1))}return 0!==h.elements.length&&e.push(h),b.length>1&&(e=e.concat(b.slice(1))),e}function k(a,b,c,d,e){var f;for(f=0;a.length>f;f++){var g=j(a[f],b,c,d);e.push(g)}return e}function l(a,b){var c,d;if(0!==a.length){if(0===b.length)return void b.push([new e(a)]);for(c=0;b.length>c;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 e(a))}}var m,n,o;if(n=[],o=i(n,b,c),!o)if(b.length>0)for(n=[],m=0;b.length>m;m++)n.push(b[m].concat(c));else n=[[c]];for(m=0;n.length>m;m++)a.push(n[m])},b.exports=k},{"../contexts":10,"../functions/default":19,"./debug-info":51,"./element":55,"./node":67,"./paren":69,"./rule":71,"./selector":74}],74:[function(a,b){var c=a("./node"),d=function(a,b,c,d,e,f){this.elements=a,this.extendList=b,this.condition=c,this.currentFileInfo=e||{},this.isReferenced=f,c||(this.evaldCondition=!0)};d.prototype=new 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a.combinator.value+(a.value.value||a.value)}).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);a?"&"===a[0]&&a.shift():a=[],this._elements=a}},d.prototype.isJustParentSelector=function(){return!this.mediaEmpty&&1===this.elements.length&&"&"===this.elements[0].value&&(" "===this.elements[0].combinator.value||""===this.elements[0].combinator.value)},d.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)},d.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;this.elements.length>c;c++)d=this.elements[c],d.genCSS(a,b)},d.prototype.markReferenced=function(){this.isReferenced=!0},d.prototype.getIsReferenced=function(){return!this.currentFileInfo.reference||this.isReferenced},d.prototype.getIsOutput=function(){return 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d=c[a];if(d>0)for(b=0;d>b;b++)this.numerator.push(a);else if(0>d)for(b=0;-d>b;b++)this.denominator.push(a)}this.numerator.sort(),this.denominator.sort()},b.exports=e},{"../data/unit-conversions":13,"./node":67}],77:[function(a,b){var c=a("./node"),d=function(a,b,c,d){this.value=a,this.currentFileInfo=c,this.index=b,this.isEvald=d};d.prototype=new c,d.prototype.type="Url",d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.genCSS=function(a,b){b.add("url("),this.value.genCSS(a,b),b.add(")")},d.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 e=-1===c.value.indexOf("?")?"?":"&",f=e+a.urlArgs;-1!==c.value.indexOf("#")?c.value=c.value.replace("#",f+"#"):c.value+=f}return new 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\ No newline at end of file
diff --git a/lib/less/index.js b/lib/less/index.js
index 1b40fcc0c..d645e7ac8 100644
--- a/lib/less/index.js
+++ b/lib/less/index.js
@@ -2,7 +2,7 @@ module.exports = function(environment, fileManagers) {
     var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
 
     var less = {
-        version: [2, 3, 0],
+        version: [2, 3, 1],
         data: require('./data'),
         tree: require('./tree'),
         Environment: (Environment = require("./environment/environment")),
diff --git a/package.json b/package.json
index 1c9b06b44..e2da2c8e4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "less",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "description": "Leaner CSS",
   "homepage": "http://lesscss.org",
   "author": {