diff --git a/dist/less.js b/dist/less.js
index 80de02044..da87e31c8 100644
--- a/dist/less.js
+++ b/dist/less.js
@@ -1,5 +1,5 @@
 /*!
- * Less - Leaner CSS v3.6.0
+ * Less - Leaner CSS v3.7.0
  * http://lesscss.org
  *
  * Copyright (c) 2009-2018, Alexis Sellier <self@cloudhead.net>
@@ -55,10 +55,6 @@ module.exports = function(window, options) {
     if (options.onReady === undefined) {
         options.onReady = true;
     }
-
-    // TODO: deprecate and remove 'inlineJavaScript' thing - where it came from at all?
-    options.javascriptEnabled = (options.javascriptEnabled || options.inlineJavaScript) ? true : false;
-
 };
 
 },{"./browser":3,"./utils":11}],2:[function(require,module,exports){
@@ -130,7 +126,7 @@ if (options.onReady) {
     less.pageLoadFinished = less.refresh(less.env === 'development').then(resolveOrReject, resolveOrReject);
 }
 
-},{"../less/default-options":16,"./add-default-options":1,"./index":8,"promise/polyfill":101}],3:[function(require,module,exports){
+},{"../less/default-options":16,"./add-default-options":1,"./index":8,"promise/polyfill":103}],3:[function(require,module,exports){
 var utils = require('./utils');
 module.exports = {
     createCSS: function (document, styles, sheet) {
@@ -831,7 +827,7 @@ module.exports = function(window, options) {
     return less;
 };
 
-},{"../less":35,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],9:[function(require,module,exports){
+},{"../less":36,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],9:[function(require,module,exports){
 module.exports = function(less, options) {
 
     var logLevel_debug = 4,
@@ -931,6 +927,7 @@ module.exports = {
 },{}],12:[function(require,module,exports){
 var contexts = {};
 module.exports = contexts;
+var MATH = require('./math-constants');
 
 var copyFromOriginal = function copyFromOriginal(original, destination, propertiesToCopy) {
     if (!original) { return; }
@@ -974,7 +971,7 @@ var evalCopyProperties = [
     'paths',             // additional include paths
     'compress',          // whether to compress
     'ieCompat',          // whether to enforce IE compatibility (IE8 data-uri)
-    'strictMath',        // whether math has to be within parenthesis
+    'math',              // whether math has to be within parenthesis
     'strictUnits',       // whether units need to evaluate correctly
     'sourceMap',         // whether to output a source map
     'importMultiple',    // whether we are currently importing multiple copies
@@ -1021,11 +1018,17 @@ contexts.Eval.prototype.outOfParenthesis = function () {
 
 contexts.Eval.prototype.inCalc = false;
 contexts.Eval.prototype.mathOn = true;
-contexts.Eval.prototype.isMathOn = function () {
+contexts.Eval.prototype.isMathOn = function (op) {
     if (!this.mathOn) {
         return false;
     }
-    return this.strictMath ? (this.parensStack && this.parensStack.length) : true;
+    if (op === '/' && this.math !== MATH.ALWAYS && (!this.parensStack || !this.parensStack.length)) {
+        return false;
+    }
+    if (this.math > MATH.PARENS_DIVISION) {
+        return this.parensStack && this.parensStack.length;
+    }
+    return true;
 };
 
 contexts.Eval.prototype.isPathRelative = function (path) {
@@ -1061,7 +1064,7 @@ contexts.Eval.prototype.normalizePath = function( path ) {
 
 // todo - do the same for the toCSS ?
 
-},{}],13:[function(require,module,exports){
+},{"./math-constants":39}],13:[function(require,module,exports){
 module.exports = {
     'aliceblue':'#f0f8ff',
     'antiquewhite':'#faebd7',
@@ -1244,10 +1247,13 @@ module.exports = {
 // Export a new default each time
 module.exports = function() {
     return {
+        /* Inline Javascript - @plugin still allowed */
+        javascriptEnabled: false,
+
         /* Outputs a makefile import dependency list to stdout. */
         depends: false,
 
-        /* Compress using less built-in compression. 
+        /* (DEPRECATED) Compress using less built-in compression. 
          * This does an okay job but does not utilise all the tricks of 
          * dedicated css compression. */
         compress: false,
@@ -1287,8 +1293,13 @@ module.exports = function() {
         /* Compatibility with IE8. Used for limiting data-uri length */
         ieCompat: false,  // true until 3.0
 
-        /* Without this option on, Less will try and process all math in your css */
-        strictMath: false,
+        /* How to process math 
+         *   0 always           - eagerly try to solve all operations
+         *   1 parens-division  - require parens for division "/"
+         *   2 parens | strict  - require parens for all operations
+         *   3 strict-legacy    - legacy strict behavior (super-strict)
+         */
+        math: 0,
 
         /* Without this option, less attempts to guess at the output unit when it does maths. */
         strictUnits: false,
@@ -1622,7 +1633,7 @@ AbstractPluginLoader.prototype.printUsage = function(plugins) {
 module.exports = AbstractPluginLoader;
 
 
-},{"../functions/function-registry":26,"../less-error":36}],19:[function(require,module,exports){
+},{"../functions/function-registry":26,"../less-error":37}],19:[function(require,module,exports){
 /**
  * @todo Document why this abstraction exists, and the relationship between
  *       environment, file managers, and plugin manager
@@ -1680,7 +1691,7 @@ environment.prototype.clearFileManagers = function () {
 
 module.exports = environment;
 
-},{"../logger":37}],20:[function(require,module,exports){
+},{"../logger":38}],20:[function(require,module,exports){
 
 var functionRegistry = require('./function-registry'),
     Anonymous = require('../tree/anonymous'),
@@ -1697,7 +1708,7 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":48,"../tree/keyword":68,"./function-registry":26}],21:[function(require,module,exports){
+},{"../tree/anonymous":50,"../tree/keyword":70,"./function-registry":26}],21:[function(require,module,exports){
 var Color = require('../tree/color'),
     functionRegistry = require('./function-registry');
 
@@ -1773,7 +1784,7 @@ for (var f in colorBlendModeFunctions) {
 
 functionRegistry.addMultiple(colorBlend);
 
-},{"../tree/color":53,"./function-registry":26}],22:[function(require,module,exports){
+},{"../tree/color":55,"./function-registry":26}],22:[function(require,module,exports){
 var Dimension = require('../tree/dimension'),
     Color = require('../tree/color'),
     Quoted = require('../tree/quoted'),
@@ -2135,7 +2146,7 @@ colorFunctions = {
 };
 functionRegistry.addMultiple(colorFunctions);
 
-},{"../tree/anonymous":48,"../tree/color":53,"../tree/dimension":60,"../tree/quoted":78,"./function-registry":26}],23:[function(require,module,exports){
+},{"../tree/anonymous":50,"../tree/color":55,"../tree/dimension":62,"../tree/quoted":80,"./function-registry":26}],23:[function(require,module,exports){
 module.exports = function(environment) {
     var Quoted = require('../tree/quoted'),
         URL = require('../tree/url'),
@@ -2225,7 +2236,7 @@ module.exports = function(environment) {
     });
 };
 
-},{"../logger":37,"../tree/quoted":78,"../tree/url":83,"../utils":87,"./function-registry":26}],24:[function(require,module,exports){
+},{"../logger":38,"../tree/quoted":80,"../tree/url":85,"../utils":89,"./function-registry":26}],24:[function(require,module,exports){
 var Keyword = require('../tree/keyword'),
     functionRegistry = require('./function-registry');
 
@@ -2254,7 +2265,7 @@ functionRegistry.add('default', defaultFunc.eval.bind(defaultFunc));
 
 module.exports = defaultFunc;
 
-},{"../tree/keyword":68,"./function-registry":26}],25:[function(require,module,exports){
+},{"../tree/keyword":70,"./function-registry":26}],25:[function(require,module,exports){
 var Expression = require('../tree/expression');
 
 var functionCaller = function(name, context, index, currentFileInfo) {
@@ -2302,7 +2313,7 @@ functionCaller.prototype.call = function(args) {
 
 module.exports = functionCaller;
 
-},{"../tree/expression":62}],26:[function(require,module,exports){
+},{"../tree/expression":64}],26:[function(require,module,exports){
 function makeRegistry( base ) {
     return {
         _data: {},
@@ -2351,6 +2362,7 @@ module.exports = function(environment) {
     require('./color');
     require('./color-blending');
     require('./data-uri')(environment);
+    require('./list');
     require('./math');
     require('./number');
     require('./string');
@@ -2360,7 +2372,110 @@ module.exports = function(environment) {
     return functions;
 };
 
-},{"./boolean":20,"./color":22,"./color-blending":21,"./data-uri":23,"./default":24,"./function-caller":25,"./function-registry":26,"./math":29,"./number":30,"./string":31,"./svg":32,"./types":33}],28:[function(require,module,exports){
+},{"./boolean":20,"./color":22,"./color-blending":21,"./data-uri":23,"./default":24,"./function-caller":25,"./function-registry":26,"./list":28,"./math":30,"./number":31,"./string":32,"./svg":33,"./types":34}],28:[function(require,module,exports){
+var Dimension = require('../tree/dimension'),
+    Declaration = require('../tree/declaration'),
+    Ruleset = require('../tree/ruleset'),
+    Selector = require('../tree/selector'),
+    Element = require('../tree/element'),
+    functionRegistry = require('./function-registry');
+
+var getItemsFromNode = function(node) {
+    // handle non-array values as an array of length 1
+    // return 'undefined' if index is invalid
+    var items = Array.isArray(node.value) ?
+        node.value : Array(node);
+
+    return items;
+};
+
+functionRegistry.addMultiple({
+    _SELF: function(n) {
+        return n;
+    },
+    extract: function(values, index) {
+        index = index.value - 1; // (1-based index)
+
+        return getItemsFromNode(values)[index];
+    },
+    length: function(values) {
+        return new Dimension(getItemsFromNode(values).length);
+    },
+    each: function(list, rs) {
+        var i = 0, rules = [], newRules, iterator;
+
+        if (list.value) {
+            if (Array.isArray(list.value)) {
+                iterator = list.value;
+            } else {
+                iterator = [list.value];
+            }
+        } else if (list.ruleset) {
+            iterator = list.ruleset.rules;
+        } else if (Array.isArray(list)) {
+            iterator = list;
+        } else {
+            iterator = [list];
+        }
+
+        var valueName = '@value',
+            keyName = '@key',
+            indexName = '@index';
+
+        if (rs.params) {
+            valueName = rs.params[0] && rs.params[0].name;
+            keyName = rs.params[1] && rs.params[1].name;
+            indexName = rs.params[2] && rs.params[2].name;
+            rs = rs.rules;
+        } else {
+            rs = rs.ruleset;
+        }
+        
+        iterator.forEach(function(item) {
+            i = i + 1;
+            var key, value;
+            if (item instanceof Declaration) {
+                key = typeof item.name === 'string' ? item.name : item.name[0].value;
+                value = item.value;
+            } else {
+                key = new Dimension(i);
+                value = item;
+            }
+
+            newRules = rs.rules.slice(0);
+            if (valueName) {
+                newRules.push(new Declaration(valueName,
+                    value,
+                    false, false, this.index, this.currentFileInfo));
+            }
+            if (indexName) {
+                newRules.push(new Declaration(indexName,
+                    new Dimension(i),
+                    false, false, this.index, this.currentFileInfo));
+            }
+            if (keyName) {
+                newRules.push(new Declaration(keyName,
+                    key,
+                    false, false, this.index, this.currentFileInfo));
+            }
+        
+            rules.push(new Ruleset([ new(Selector)([ new Element("", '&') ]) ],
+                newRules,
+                rs.strictImports,
+                rs.visibilityInfo()
+            ));
+        });
+
+        return new Ruleset([ new(Selector)([ new Element("", '&') ]) ],
+                rules,
+                rs.strictImports,
+                rs.visibilityInfo()
+            ).eval(this.context);
+
+    }
+});
+
+},{"../tree/declaration":60,"../tree/dimension":62,"../tree/element":63,"../tree/ruleset":81,"../tree/selector":82,"./function-registry":26}],29:[function(require,module,exports){
 var Dimension = require('../tree/dimension');
 
 var MathHelper = function() {
@@ -2377,7 +2492,7 @@ MathHelper._math = function (fn, unit, n) {
     return new Dimension(fn(parseFloat(n.value)), unit);
 };
 module.exports = MathHelper;
-},{"../tree/dimension":60}],29:[function(require,module,exports){
+},{"../tree/dimension":62}],30:[function(require,module,exports){
 var functionRegistry = require('./function-registry'),
     mathHelper = require('./math-helper.js');
 
@@ -2408,7 +2523,7 @@ mathFunctions.round = function (n, f) {
 
 functionRegistry.addMultiple(mathFunctions);
 
-},{"./function-registry":26,"./math-helper.js":28}],30:[function(require,module,exports){
+},{"./function-registry":26,"./math-helper.js":29}],31:[function(require,module,exports){
 var Dimension = require('../tree/dimension'),
     Anonymous = require('../tree/anonymous'),
     functionRegistry = require('./function-registry'),
@@ -2491,7 +2606,7 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":48,"../tree/dimension":60,"./function-registry":26,"./math-helper.js":28}],31:[function(require,module,exports){
+},{"../tree/anonymous":50,"../tree/dimension":62,"./function-registry":26,"./math-helper.js":29}],32:[function(require,module,exports){
 var Quoted = require('../tree/quoted'),
     Anonymous = require('../tree/anonymous'),
     JavaScript = require('../tree/javascript'),
@@ -2530,7 +2645,7 @@ functionRegistry.addMultiple({
     }
 });
 
-},{"../tree/anonymous":48,"../tree/javascript":66,"../tree/quoted":78,"./function-registry":26}],32:[function(require,module,exports){
+},{"../tree/anonymous":50,"../tree/javascript":68,"../tree/quoted":80,"./function-registry":26}],33:[function(require,module,exports){
 module.exports = function(environment) {
     var Dimension = require('../tree/dimension'),
         Color = require('../tree/color'),
@@ -2619,7 +2734,7 @@ module.exports = function(environment) {
     });
 };
 
-},{"../tree/color":53,"../tree/dimension":60,"../tree/expression":62,"../tree/quoted":78,"../tree/url":83,"./function-registry":26}],33:[function(require,module,exports){
+},{"../tree/color":55,"../tree/dimension":62,"../tree/expression":64,"../tree/quoted":80,"../tree/url":85,"./function-registry":26}],34:[function(require,module,exports){
 var Keyword = require('../tree/keyword'),
     DetachedRuleset = require('../tree/detached-ruleset'),
     Dimension = require('../tree/dimension'),
@@ -2642,15 +2757,8 @@ var isa = function (n, Type) {
             throw { type: 'Argument', message: 'Second argument to isunit should be a unit or a string.' };
         }
         return (n instanceof Dimension) && n.unit.is(unit) ? Keyword.True : Keyword.False;
-    },
-    getItemsFromNode = function(node) {
-        // handle non-array values as an array of length 1
-        // return 'undefined' if index is invalid
-        var items = Array.isArray(node.value) ?
-            node.value : Array(node);
-
-        return items;
     };
+
 functionRegistry.addMultiple({
     isruleset: function (n) {
         return isa(n, DetachedRuleset);
@@ -2699,21 +2807,10 @@ functionRegistry.addMultiple({
     },
     'get-unit': function (n) {
         return new Anonymous(n.unit);
-    },
-    extract: function(values, index) {
-        index = index.value - 1; // (1-based index)
-
-        return getItemsFromNode(values)[index];
-    },
-    length: function(values) {
-        return new Dimension(getItemsFromNode(values).length);
-    },
-    _SELF: function(n) {
-        return n;
     }
 });
 
-},{"../tree/anonymous":48,"../tree/color":53,"../tree/detached-ruleset":59,"../tree/dimension":60,"../tree/keyword":68,"../tree/operation":75,"../tree/quoted":78,"../tree/url":83,"./function-registry":26}],34:[function(require,module,exports){
+},{"../tree/anonymous":50,"../tree/color":55,"../tree/detached-ruleset":61,"../tree/dimension":62,"../tree/keyword":70,"../tree/operation":77,"../tree/quoted":80,"../tree/url":85,"./function-registry":26}],35:[function(require,module,exports){
 var contexts = require('./contexts'),
     Parser = require('./parser/parser'),
     LessError = require('./less-error'),
@@ -2882,12 +2979,12 @@ module.exports = function(environment) {
     return ImportManager;
 };
 
-},{"./contexts":12,"./less-error":36,"./logger":37,"./parser/parser":42,"./utils":87,"promise":undefined}],35:[function(require,module,exports){
+},{"./contexts":12,"./less-error":37,"./logger":38,"./parser/parser":44,"./utils":89,"promise":undefined}],36:[function(require,module,exports){
 module.exports = function(environment, fileManagers) {
     var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
 
     var initial = {
-        version: [3, 6, 0],
+        version: [3, 7, 0],
         data: require('./data'),
         tree: require('./tree'),
         Environment: (Environment = require('./environment/environment')),
@@ -2939,7 +3036,7 @@ module.exports = function(environment, fileManagers) {
     return api;
 };
 
-},{"./contexts":12,"./data":14,"./environment/abstract-file-manager":17,"./environment/abstract-plugin-loader":18,"./environment/environment":19,"./functions":27,"./import-manager":34,"./less-error":36,"./logger":37,"./parse":39,"./parse-tree":38,"./parser/parser":42,"./plugin-manager":43,"./render":44,"./source-map-builder":45,"./source-map-output":46,"./transform-tree":47,"./tree":65,"./utils":87,"./visitors":91}],36:[function(require,module,exports){
+},{"./contexts":12,"./data":14,"./environment/abstract-file-manager":17,"./environment/abstract-plugin-loader":18,"./environment/environment":19,"./functions":27,"./import-manager":35,"./less-error":37,"./logger":38,"./parse":41,"./parse-tree":40,"./parser/parser":44,"./plugin-manager":45,"./render":46,"./source-map-builder":47,"./source-map-output":48,"./transform-tree":49,"./tree":67,"./utils":89,"./visitors":93}],37:[function(require,module,exports){
 var utils = require('./utils');
 /**
  * This is a centralized class of any error that could be thrown internally (mostly by the parser).
@@ -3082,7 +3179,7 @@ LessError.prototype.toString = function(options) {
     return message;
 };
 
-},{"./utils":87}],37:[function(require,module,exports){
+},{"./utils":89}],38:[function(require,module,exports){
 module.exports = {
     error: function(msg) {
         this._fireEvent('error', msg);
@@ -3118,7 +3215,14 @@ module.exports = {
     _listeners: []
 };
 
-},{}],38:[function(require,module,exports){
+},{}],39:[function(require,module,exports){
+module.exports = {
+    ALWAYS: 0,
+    PARENS_DIVISION: 1,
+    PARENS: 2,
+    STRICT_LEGACY: 3
+};
+},{}],40:[function(require,module,exports){
 var LessError = require('./less-error'),
     transformTree = require('./transform-tree'),
     logger = require('./logger');
@@ -3180,7 +3284,7 @@ module.exports = function(SourceMapBuilder) {
     return ParseTree;
 };
 
-},{"./less-error":36,"./logger":37,"./transform-tree":47}],39:[function(require,module,exports){
+},{"./less-error":37,"./logger":38,"./transform-tree":49}],41:[function(require,module,exports){
 var PromiseConstructor,
     contexts = require('./contexts'),
     Parser = require('./parser/parser'),
@@ -3193,10 +3297,10 @@ module.exports = function(environment, ParseTree, ImportManager) {
 
         if (typeof options === 'function') {
             callback = options;
-            options = utils.defaults(this.options, {});
+            options = utils.copyOptions(this.options, {});
         }
         else {
-            options = utils.defaults(this.options, options || {});
+            options = utils.copyOptions(this.options, options || {});
         }
 
         if (!callback) {
@@ -3273,7 +3377,7 @@ module.exports = function(environment, ParseTree, ImportManager) {
     return parse;
 };
 
-},{"./contexts":12,"./less-error":36,"./parser/parser":42,"./plugin-manager":43,"./utils":87,"promise":undefined}],40:[function(require,module,exports){
+},{"./contexts":12,"./less-error":37,"./parser/parser":44,"./plugin-manager":45,"./utils":89,"promise":undefined}],42:[function(require,module,exports){
 // Split the input into chunks.
 module.exports = function (input, fail) {
     var len = input.length, level = 0, parenLevel = 0,
@@ -3387,7 +3491,7 @@ module.exports = function (input, fail) {
     return chunks;
 };
 
-},{}],41:[function(require,module,exports){
+},{}],43:[function(require,module,exports){
 var chunker = require('./chunker');
 
 module.exports = function() {
@@ -3772,7 +3876,7 @@ module.exports = function() {
     return parserInput;
 };
 
-},{"./chunker":40}],42:[function(require,module,exports){
+},{"./chunker":42}],44:[function(require,module,exports){
 var LessError = require('../less-error'),
     tree = require('../tree'),
     visitors = require('../visitors'),
@@ -4706,7 +4810,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                         returner = { args:null, variadic: false },
                         expressions = [], argsSemiColon = [], argsComma = [],
                         isSemiColonSeparated, expressionContainsNamed, name, nameLoop,
-                        value, arg, expand;
+                        value, arg, expand, hasSep = true; 
 
                     parserInput.save();
 
@@ -4727,7 +4831,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                             arg = entities.variable() || entities.property() || entities.literal() || entities.keyword() || this.call(true);
                         }
 
-                        if (!arg) {
+                        if (!arg || !hasSep) {
                             break;
                         }
 
@@ -4793,10 +4897,12 @@ var Parser = function Parser(context, imports, fileInfo) {
                         argsComma.push({ name:nameLoop, value:value, expand:expand });
 
                         if (parserInput.$char(',')) {
+                            hasSep = true;
                             continue;
                         }
+                        hasSep = parserInput.$char(';') === ';';
 
-                        if (parserInput.$char(';') || isSemiColonSeparated) {
+                        if (hasSep || isSemiColonSeparated) {
 
                             if (expressionContainsNamed) {
                                 error('Cannot mix ; and , as delimiter types');
@@ -5152,10 +5258,33 @@ var Parser = function Parser(context, imports, fileInfo) {
             },
 
             detachedRuleset: function() {
+                var argInfo, params, variadic;
+
+                parserInput.save();
+                if (parserInput.$re(/^[.#]\(/)) {
+                    /**
+                     * DR args currently only implemented for each() function, and not 
+                     * yet settable as `@dr: #(@arg) {}`
+                     * This should be done when DRs are merged with mixins.
+                     * See: https://github.com/less/less-meta/issues/16
+                     */
+                    argInfo = this.mixin.args(false);
+                    params = argInfo.args;
+                    variadic = argInfo.variadic;
+                    if (!parserInput.$char(')')) {
+                        parserInput.restore();
+                        return;
+                    }
+                }
                 var blockRuleset = this.blockRuleset();
                 if (blockRuleset) {
+                    parserInput.forget();
+                    if (params) {
+                        return new tree.mixin.Definition(null, params, blockRuleset, null, variadic);
+                    }
                     return new tree.DetachedRuleset(blockRuleset);
                 }
+                parserInput.restore();
             },
 
             //
@@ -5697,7 +5826,7 @@ var Parser = function Parser(context, imports, fileInfo) {
 
                         parserInput.save();
 
-                        op = parserInput.$char('/') || parserInput.$char('*');
+                        op = parserInput.$char('/') || parserInput.$char('*') || parserInput.$str('./');
 
                         if (!op) { parserInput.forget(); break; }
 
@@ -6032,7 +6161,7 @@ Parser.serializeVars = function(vars) {
 
 module.exports = Parser;
 
-},{"../functions/function-registry":26,"../less-error":36,"../tree":65,"../utils":87,"../visitors":91,"./parser-input":41}],43:[function(require,module,exports){
+},{"../functions/function-registry":26,"../less-error":37,"../tree":67,"../utils":89,"../visitors":93,"./parser-input":43}],45:[function(require,module,exports){
 /**
  * Plugin Manager
  */
@@ -6189,7 +6318,7 @@ PluginManager.prototype.getFileManagers = function() {
 //
 module.exports = PluginManagerFactory;
 
-},{}],44:[function(require,module,exports){
+},{}],46:[function(require,module,exports){
 var PromiseConstructor,
     utils = require('./utils');
 
@@ -6197,10 +6326,10 @@ module.exports = function(environment, ParseTree, ImportManager) {
     var render = function (input, options, callback) {
         if (typeof options === 'function') {
             callback = options;
-            options = utils.defaults(this.options, {});
+            options = utils.copyOptions(this.options, {});
         }
         else {
-            options = utils.defaults(this.options, options || {});
+            options = utils.copyOptions(this.options, options || {});
         }
 
         if (!callback) {
@@ -6236,7 +6365,7 @@ module.exports = function(environment, ParseTree, ImportManager) {
     return render;
 };
 
-},{"./utils":87,"promise":undefined}],45:[function(require,module,exports){
+},{"./utils":89,"promise":undefined}],47:[function(require,module,exports){
 module.exports = function (SourceMapOutput, environment) {
 
     var SourceMapBuilder = function (options) {
@@ -6310,7 +6439,7 @@ module.exports = function (SourceMapOutput, environment) {
     return SourceMapBuilder;
 };
 
-},{}],46:[function(require,module,exports){
+},{}],48:[function(require,module,exports){
 module.exports = function (environment) {
 
     var SourceMapOutput = function (options) {
@@ -6455,7 +6584,7 @@ module.exports = function (environment) {
     return SourceMapOutput;
 };
 
-},{}],47:[function(require,module,exports){
+},{}],49:[function(require,module,exports){
 var contexts = require('./contexts'),
     visitor = require('./visitors'),
     tree = require('./tree');
@@ -6550,7 +6679,7 @@ module.exports = function(root, options) {
     return evaldRoot;
 };
 
-},{"./contexts":12,"./tree":65,"./visitors":91}],48:[function(require,module,exports){
+},{"./contexts":12,"./tree":67,"./visitors":93}],50:[function(require,module,exports){
 var Node = require('./node');
 
 var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike, visibilityInfo) {
@@ -6581,7 +6710,7 @@ Anonymous.prototype.genCSS = function (context, output) {
 };
 module.exports = Anonymous;
 
-},{"./node":74}],49:[function(require,module,exports){
+},{"./node":76}],51:[function(require,module,exports){
 var Node = require('./node');
 
 var Assignment = function (key, val) {
@@ -6610,7 +6739,7 @@ Assignment.prototype.genCSS = function (context, output) {
 };
 module.exports = Assignment;
 
-},{"./node":74}],50:[function(require,module,exports){
+},{"./node":76}],52:[function(require,module,exports){
 var Node = require('./node'),
     Selector = require('./selector'),
     Ruleset = require('./ruleset'),
@@ -6748,7 +6877,7 @@ AtRule.prototype.outputRuleset = function (context, output, rules) {
 };
 module.exports = AtRule;
 
-},{"./anonymous":48,"./node":74,"./ruleset":79,"./selector":80}],51:[function(require,module,exports){
+},{"./anonymous":50,"./node":76,"./ruleset":81,"./selector":82}],53:[function(require,module,exports){
 var Node = require('./node');
 
 var Attribute = function (key, op, value) {
@@ -6777,7 +6906,7 @@ Attribute.prototype.toCSS = function (context) {
 };
 module.exports = Attribute;
 
-},{"./node":74}],52:[function(require,module,exports){
+},{"./node":76}],54:[function(require,module,exports){
 var Node = require('./node'),
     Anonymous = require('./anonymous'),
     FunctionCaller = require('../functions/function-caller');
@@ -6876,7 +7005,7 @@ Call.prototype.genCSS = function (context, output) {
 };
 module.exports = Call;
 
-},{"../functions/function-caller":25,"./anonymous":48,"./node":74}],53:[function(require,module,exports){
+},{"../functions/function-caller":25,"./anonymous":50,"./node":76}],55:[function(require,module,exports){
 var Node = require('./node'),
     colors = require('../data/colors');
 
@@ -7067,7 +7196,7 @@ Color.fromKeyword = function(keyword) {
 };
 module.exports = Color;
 
-},{"../data/colors":13,"./node":74}],54:[function(require,module,exports){
+},{"../data/colors":13,"./node":76}],56:[function(require,module,exports){
 var Node = require('./node');
 
 var Combinator = function (value) {
@@ -7092,7 +7221,7 @@ Combinator.prototype.genCSS = function (context, output) {
 };
 module.exports = Combinator;
 
-},{"./node":74}],55:[function(require,module,exports){
+},{"./node":76}],57:[function(require,module,exports){
 var Node = require('./node'),
     getDebugInfo = require('./debug-info');
 
@@ -7117,7 +7246,7 @@ Comment.prototype.isSilent = function(context) {
 };
 module.exports = Comment;
 
-},{"./debug-info":57,"./node":74}],56:[function(require,module,exports){
+},{"./debug-info":59,"./node":76}],58:[function(require,module,exports){
 var Node = require('./node');
 
 var Condition = function (op, l, r, i, negate) {
@@ -7156,7 +7285,7 @@ Condition.prototype.eval = function (context) {
 };
 module.exports = Condition;
 
-},{"./node":74}],57:[function(require,module,exports){
+},{"./node":76}],59:[function(require,module,exports){
 var debugInfo = function(context, ctx, lineSeparator) {
     var result = '';
     if (context.dumpLineNumbers && !context.compress) {
@@ -7196,11 +7325,12 @@ debugInfo.asMediaQuery = function(ctx) {
 
 module.exports = debugInfo;
 
-},{}],58:[function(require,module,exports){
+},{}],60:[function(require,module,exports){
 var Node = require('./node'),
     Value = require('./value'),
     Keyword = require('./keyword'),
-    Anonymous = require('./anonymous');
+    Anonymous = require('./anonymous'),
+    MATH = require('../math-constants');
 
 var Declaration = function (name, value, important, merge, index, currentFileInfo, inline, variable) {
     this.name = name;
@@ -7240,7 +7370,7 @@ Declaration.prototype.genCSS = function (context, output) {
     output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? '' : ';'), this._fileInfo, this._index);
 };
 Declaration.prototype.eval = function (context) {
-    var strictMathBypass = false, name = this.name, evaldValue, variable = this.variable;
+    var mathBypass = false, prevMath, name = this.name, evaldValue, variable = this.variable;
     if (typeof name !== 'string') {
         // expand 'primitive' name directly to get
         // things faster (~10% for benchmark.less):
@@ -7248,9 +7378,12 @@ Declaration.prototype.eval = function (context) {
                 name[0].value : evalName(context, name);
         variable = false; // never treat expanded interpolation as new variable name
     }
-    if (name === 'font' && !context.strictMath) {
-        strictMathBypass = true;
-        context.strictMath = true;
+
+    // @todo remove when parens-division is default
+    if (name === 'font' && context.math === MATH.ALWAYS) {
+        mathBypass = true;
+        prevMath = context.math;
+        context.math = MATH.PARENS_DIVISION;
     }
     try {
         context.importantScope.push({});
@@ -7281,8 +7414,8 @@ Declaration.prototype.eval = function (context) {
         throw e;
     }
     finally {
-        if (strictMathBypass) {
-            context.strictMath = false;
+        if (mathBypass) {
+            context.math = prevMath;
         }
     }
 };
@@ -7295,7 +7428,7 @@ Declaration.prototype.makeImportant = function () {
 };
 
 module.exports = Declaration;
-},{"./anonymous":48,"./keyword":68,"./node":74,"./value":84}],59:[function(require,module,exports){
+},{"../math-constants":39,"./anonymous":50,"./keyword":70,"./node":76,"./value":86}],61:[function(require,module,exports){
 var Node = require('./node'),
     contexts = require('../contexts'),
     utils = require('../utils');
@@ -7320,7 +7453,7 @@ DetachedRuleset.prototype.callEval = function (context) {
 };
 module.exports = DetachedRuleset;
 
-},{"../contexts":12,"../utils":87,"./node":74}],60:[function(require,module,exports){
+},{"../contexts":12,"../utils":89,"./node":76}],62:[function(require,module,exports){
 var Node = require('./node'),
     unitConversions = require('../data/unit-conversions'),
     Unit = require('./unit'),
@@ -7483,7 +7616,7 @@ Dimension.prototype.convertTo = function (conversions) {
 };
 module.exports = Dimension;
 
-},{"../data/unit-conversions":15,"./color":53,"./node":74,"./unit":82}],61:[function(require,module,exports){
+},{"../data/unit-conversions":15,"./color":55,"./node":76,"./unit":84}],63:[function(require,module,exports){
 var Node = require('./node'),
     Paren = require('./paren'),
     Combinator = require('./combinator');
@@ -7549,10 +7682,12 @@ Element.prototype.toCSS = function (context) {
 };
 module.exports = Element;
 
-},{"./combinator":54,"./node":74,"./paren":76}],62:[function(require,module,exports){
+},{"./combinator":56,"./node":76,"./paren":78}],64:[function(require,module,exports){
 var Node = require('./node'),
     Paren = require('./paren'),
-    Comment = require('./comment');
+    Comment = require('./comment'),
+    Dimension = require('./dimension'),
+    MATH = require('../math-constants');
 
 var Expression = function (value, noSpacing) {
     this.value = value;
@@ -7569,7 +7704,8 @@ Expression.prototype.accept = function (visitor) {
 Expression.prototype.eval = function (context) {
     var returnValue,
         mathOn = context.isMathOn(),
-        inParenthesis = this.parens && !this.parensInOp,
+        inParenthesis = this.parens && 
+            (context.math !== MATH.STRICT_LEGACY || !this.parensInOp),
         doubleParen = false;
     if (inParenthesis) {
         context.inParenthesis();
@@ -7592,7 +7728,8 @@ Expression.prototype.eval = function (context) {
     if (inParenthesis) {
         context.outOfParenthesis();
     }
-    if (this.parens && this.parensInOp && !mathOn && !doubleParen) {
+    if (this.parens && this.parensInOp && !mathOn && !doubleParen 
+        && (!(returnValue instanceof Dimension))) {
         returnValue = new Paren(returnValue);
     }
     return returnValue;
@@ -7612,7 +7749,7 @@ Expression.prototype.throwAwayComments = function () {
 };
 module.exports = Expression;
 
-},{"./comment":55,"./node":74,"./paren":76}],63:[function(require,module,exports){
+},{"../math-constants":39,"./comment":57,"./dimension":62,"./node":76,"./paren":78}],65:[function(require,module,exports){
 var Node = require('./node'),
     Selector = require('./selector');
 
@@ -7672,7 +7809,7 @@ Extend.prototype.findSelfSelectors = function (selectors) {
 };
 module.exports = Extend;
 
-},{"./node":74,"./selector":80}],64:[function(require,module,exports){
+},{"./node":76,"./selector":82}],66:[function(require,module,exports){
 var Node = require('./node'),
     Media = require('./media'),
     URL = require('./url'),
@@ -7854,7 +7991,7 @@ Import.prototype.doEval = function (context) {
 };
 module.exports = Import;
 
-},{"../less-error":36,"../utils":87,"./anonymous":48,"./media":69,"./node":74,"./quoted":78,"./ruleset":79,"./url":83}],65:[function(require,module,exports){
+},{"../less-error":37,"../utils":89,"./anonymous":50,"./media":71,"./node":76,"./quoted":80,"./ruleset":81,"./url":85}],67:[function(require,module,exports){
 var tree = Object.create(null);
 
 tree.Node = require('./node');
@@ -7898,7 +8035,7 @@ tree.NamespaceValue = require('./namespace-value');
 
 module.exports = tree;
 
-},{"./anonymous":48,"./assignment":49,"./atrule":50,"./attribute":51,"./call":52,"./color":53,"./combinator":54,"./comment":55,"./condition":56,"./declaration":58,"./detached-ruleset":59,"./dimension":60,"./element":61,"./expression":62,"./extend":63,"./import":64,"./javascript":66,"./keyword":68,"./media":69,"./mixin-call":70,"./mixin-definition":71,"./namespace-value":72,"./negative":73,"./node":74,"./operation":75,"./paren":76,"./property":77,"./quoted":78,"./ruleset":79,"./selector":80,"./unicode-descriptor":81,"./unit":82,"./url":83,"./value":84,"./variable":86,"./variable-call":85}],66:[function(require,module,exports){
+},{"./anonymous":50,"./assignment":51,"./atrule":52,"./attribute":53,"./call":54,"./color":55,"./combinator":56,"./comment":57,"./condition":58,"./declaration":60,"./detached-ruleset":61,"./dimension":62,"./element":63,"./expression":64,"./extend":65,"./import":66,"./javascript":68,"./keyword":70,"./media":71,"./mixin-call":72,"./mixin-definition":73,"./namespace-value":74,"./negative":75,"./node":76,"./operation":77,"./paren":78,"./property":79,"./quoted":80,"./ruleset":81,"./selector":82,"./unicode-descriptor":83,"./unit":84,"./url":85,"./value":86,"./variable":88,"./variable-call":87}],68:[function(require,module,exports){
 var JsEvalNode = require('./js-eval-node'),
     Dimension = require('./dimension'),
     Quoted = require('./quoted'),
@@ -7929,7 +8066,7 @@ JavaScript.prototype.eval = function(context) {
 
 module.exports = JavaScript;
 
-},{"./anonymous":48,"./dimension":60,"./js-eval-node":67,"./quoted":78}],67:[function(require,module,exports){
+},{"./anonymous":50,"./dimension":62,"./js-eval-node":69,"./quoted":80}],69:[function(require,module,exports){
 var Node = require('./node'),
     Variable = require('./variable');
 
@@ -7992,7 +8129,7 @@ JsEvalNode.prototype.jsify = function (obj) {
 
 module.exports = JsEvalNode;
 
-},{"./node":74,"./variable":86}],68:[function(require,module,exports){
+},{"./node":76,"./variable":88}],70:[function(require,module,exports){
 var Node = require('./node');
 
 var Keyword = function (value) { this.value = value; };
@@ -8008,7 +8145,7 @@ Keyword.False = new Keyword('false');
 
 module.exports = Keyword;
 
-},{"./node":74}],69:[function(require,module,exports){
+},{"./node":76}],71:[function(require,module,exports){
 var Ruleset = require('./ruleset'),
     Value = require('./value'),
     Selector = require('./selector'),
@@ -8151,7 +8288,7 @@ Media.prototype.bubbleSelectors = function (selectors) {
 };
 module.exports = Media;
 
-},{"../utils":87,"./anonymous":48,"./atrule":50,"./expression":62,"./ruleset":79,"./selector":80,"./value":84}],70:[function(require,module,exports){
+},{"../utils":89,"./anonymous":50,"./atrule":52,"./expression":64,"./ruleset":81,"./selector":82,"./value":86}],72:[function(require,module,exports){
 var Node = require('./node'),
     Selector = require('./selector'),
     MixinDefinition = require('./mixin-definition'),
@@ -8339,7 +8476,7 @@ MixinCall.prototype.format = function (args) {
 };
 module.exports = MixinCall;
 
-},{"../functions/default":24,"./mixin-definition":71,"./node":74,"./selector":80}],71:[function(require,module,exports){
+},{"../functions/default":24,"./mixin-definition":73,"./node":76,"./selector":82}],73:[function(require,module,exports){
 var Selector = require('./selector'),
     Element = require('./element'),
     Ruleset = require('./ruleset'),
@@ -8350,7 +8487,7 @@ var Selector = require('./selector'),
     utils = require('../utils');
 
 var Definition = function (name, params, rules, condition, variadic, frames, visibilityInfo) {
-    this.name = name;
+    this.name = name || 'anonymous mixin';
     this.selectors = [new Selector([new Element(null, name, false, this._index, this._fileInfo)])];
     this.params = params;
     this.condition = condition;
@@ -8550,7 +8687,7 @@ Definition.prototype.matchArgs = function (args, context) {
 };
 module.exports = Definition;
 
-},{"../contexts":12,"../utils":87,"./declaration":58,"./detached-ruleset":59,"./element":61,"./expression":62,"./ruleset":79,"./selector":80}],72:[function(require,module,exports){
+},{"../contexts":12,"../utils":89,"./declaration":60,"./detached-ruleset":61,"./element":63,"./expression":64,"./ruleset":81,"./selector":82}],74:[function(require,module,exports){
 var Node = require('./node'),
     Variable = require('./variable'),
     Ruleset = require('./ruleset'),
@@ -8631,7 +8768,7 @@ NamespaceValue.prototype.eval = function (context) {
 };
 module.exports = NamespaceValue;
 
-},{"./node":74,"./ruleset":79,"./selector":80,"./variable":86}],73:[function(require,module,exports){
+},{"./node":76,"./ruleset":81,"./selector":82,"./variable":88}],75:[function(require,module,exports){
 var Node = require('./node'),
     Operation = require('./operation'),
     Dimension = require('./dimension');
@@ -8653,7 +8790,7 @@ Negative.prototype.eval = function (context) {
 };
 module.exports = Negative;
 
-},{"./dimension":60,"./node":74,"./operation":75}],74:[function(require,module,exports){
+},{"./dimension":62,"./node":76,"./operation":77}],76:[function(require,module,exports){
 var Node = function() {
     this.parent = null;
     this.visibilityBlocks = undefined;
@@ -8812,10 +8949,11 @@ Node.prototype.copyVisibilityInfo = function(info) {
 };
 module.exports = Node;
 
-},{}],75:[function(require,module,exports){
+},{}],77:[function(require,module,exports){
 var Node = require('./node'),
     Color = require('./color'),
-    Dimension = require('./dimension');
+    Dimension = require('./dimension'),
+    MATH = require('../math-constants');
 
 var Operation = function (op, operands, isSpaced) {
     this.op = op.trim();
@@ -8829,9 +8967,11 @@ Operation.prototype.accept = function (visitor) {
 };
 Operation.prototype.eval = function (context) {
     var a = this.operands[0].eval(context),
-        b = this.operands[1].eval(context);
+        b = this.operands[1].eval(context),
+        op;
 
-    if (context.isMathOn()) {
+    if (context.isMathOn(this.op)) {
+        op = this.op === './' ? '/' : this.op;
         if (a instanceof Dimension && b instanceof Color) {
             a = a.toColor();
         }
@@ -8839,11 +8979,14 @@ Operation.prototype.eval = function (context) {
             b = b.toColor();
         }
         if (!a.operate) {
+            if (a instanceof Operation && a.op === '/' && context.math === MATH.PARENS_DIVISION) {
+                return new Operation(this.op, [a, b], this.isSpaced);
+            }
             throw { type: 'Operation',
                 message: 'Operation on an invalid type' };
         }
 
-        return a.operate(context, this.op, b);
+        return a.operate(context, op, b);
     } else {
         return new Operation(this.op, [a, b], this.isSpaced);
     }
@@ -8862,7 +9005,7 @@ Operation.prototype.genCSS = function (context, output) {
 
 module.exports = Operation;
 
-},{"./color":53,"./dimension":60,"./node":74}],76:[function(require,module,exports){
+},{"../math-constants":39,"./color":55,"./dimension":62,"./node":76}],78:[function(require,module,exports){
 var Node = require('./node');
 
 var Paren = function (node) {
@@ -8880,7 +9023,7 @@ Paren.prototype.eval = function (context) {
 };
 module.exports = Paren;
 
-},{"./node":74}],77:[function(require,module,exports){
+},{"./node":76}],79:[function(require,module,exports){
 var Node = require('./node'),
     Declaration = require('./declaration');
 
@@ -8952,7 +9095,7 @@ Property.prototype.find = function (obj, fun) {
 };
 module.exports = Property;
 
-},{"./declaration":58,"./node":74}],78:[function(require,module,exports){
+},{"./declaration":60,"./node":76}],80:[function(require,module,exports){
 var Node = require('./node'),
     Variable = require('./variable'),
     Property = require('./property');
@@ -9012,7 +9155,7 @@ Quoted.prototype.compare = function (other) {
 };
 module.exports = Quoted;
 
-},{"./node":74,"./property":77,"./variable":86}],79:[function(require,module,exports){
+},{"./node":76,"./property":79,"./variable":88}],81:[function(require,module,exports){
 var Node = require('./node'),
     Declaration = require('./declaration'),
     Keyword = require('./keyword'),
@@ -9822,7 +9965,7 @@ Ruleset.prototype.joinSelector = function (paths, context, selector) {
 };
 module.exports = Ruleset;
 
-},{"../contexts":12,"../functions/default":24,"../functions/function-registry":26,"../utils":87,"./anonymous":48,"./comment":55,"./debug-info":57,"./declaration":58,"./element":61,"./keyword":68,"./node":74,"./paren":76,"./selector":80}],80:[function(require,module,exports){
+},{"../contexts":12,"../functions/default":24,"../functions/function-registry":26,"../utils":89,"./anonymous":50,"./comment":57,"./debug-info":59,"./declaration":60,"./element":63,"./keyword":70,"./node":76,"./paren":78,"./selector":82}],82:[function(require,module,exports){
 var Node = require('./node'),
     Element = require('./element'),
     LessError = require('../less-error');
@@ -9955,7 +10098,7 @@ Selector.prototype.getIsOutput = function() {
 };
 module.exports = Selector;
 
-},{"../less-error":36,"./element":61,"./node":74}],81:[function(require,module,exports){
+},{"../less-error":37,"./element":63,"./node":76}],83:[function(require,module,exports){
 var Node = require('./node');
 
 var UnicodeDescriptor = function (value) {
@@ -9966,7 +10109,7 @@ UnicodeDescriptor.prototype.type = 'UnicodeDescriptor';
 
 module.exports = UnicodeDescriptor;
 
-},{"./node":74}],82:[function(require,module,exports){
+},{"./node":76}],84:[function(require,module,exports){
 var Node = require('./node'),
     unitConversions = require('../data/unit-conversions'),
     utils = require('../utils');
@@ -10089,7 +10232,7 @@ Unit.prototype.cancel = function () {
 };
 module.exports = Unit;
 
-},{"../data/unit-conversions":15,"../utils":87,"./node":74}],83:[function(require,module,exports){
+},{"../data/unit-conversions":15,"../utils":89,"./node":76}],85:[function(require,module,exports){
 var Node = require('./node');
 
 var URL = function (val, index, currentFileInfo, isEvald) {
@@ -10145,7 +10288,7 @@ URL.prototype.eval = function (context) {
 };
 module.exports = URL;
 
-},{"./node":74}],84:[function(require,module,exports){
+},{"./node":76}],86:[function(require,module,exports){
 var Node = require('./node');
 
 var Value = function (value) {
@@ -10186,7 +10329,7 @@ Value.prototype.genCSS = function (context, output) {
 };
 module.exports = Value;
 
-},{"./node":74}],85:[function(require,module,exports){
+},{"./node":76}],87:[function(require,module,exports){
 var Node = require('./node'),
     Variable = require('./variable'),
     Ruleset = require('./ruleset'),
@@ -10224,7 +10367,7 @@ VariableCall.prototype.eval = function (context) {
 };
 module.exports = VariableCall;
 
-},{"../less-error":36,"./detached-ruleset":59,"./node":74,"./ruleset":79,"./variable":86}],86:[function(require,module,exports){
+},{"../less-error":37,"./detached-ruleset":61,"./node":76,"./ruleset":81,"./variable":88}],88:[function(require,module,exports){
 var Node = require('./node'),
     Call = require('./call');
 
@@ -10286,8 +10429,10 @@ Variable.prototype.find = function (obj, fun) {
 };
 module.exports = Variable;
 
-},{"./call":52,"./node":74}],87:[function(require,module,exports){
+},{"./call":54,"./node":76}],89:[function(require,module,exports){
 /* jshint proto: true */
+var MATH = require('./math-constants');
+
 var utils = {
     getLocation: function(index, inputStream) {
         var n = index + 1,
@@ -10325,6 +10470,29 @@ var utils = {
         }
         return cloned;
     },
+    copyOptions: function(obj1, obj2) {
+        var opts = utils.defaults(obj1, obj2);
+        if (opts.strictMath) {
+            opts.math = MATH.STRICT_LEGACY;
+        }
+        if (opts.hasOwnProperty('math') && typeof opts.math === 'string') {
+            switch (opts.math.toLowerCase()) {
+                case 'always':
+                    opts.math = MATH.ALWAYS;
+                    break;
+                case 'parens-division':
+                    opts.math = MATH.PARENS_DIVISION;
+                    break;
+                case 'strict':
+                case 'parens':
+                    opts.math = MATH.PARENS;
+                    break;
+                case 'strict-legacy':
+                    opts.math = MATH.STRICT_LEGACY;
+            }
+        }
+        return opts;
+    },
     defaults: function(obj1, obj2) {
         if (!obj2._defaults || obj2._defaults !== obj1) {
             for (var prop in obj1) {
@@ -10372,7 +10540,7 @@ var utils = {
 };
 
 module.exports = utils;
-},{}],88:[function(require,module,exports){
+},{"./math-constants":39}],90:[function(require,module,exports){
 var tree = require('../tree'),
     Visitor = require('./visitor'),
     logger = require('../logger'),
@@ -10836,7 +11004,7 @@ ProcessExtendsVisitor.prototype = {
 
 module.exports = ProcessExtendsVisitor;
 
-},{"../logger":37,"../tree":65,"../utils":87,"./visitor":95}],89:[function(require,module,exports){
+},{"../logger":38,"../tree":67,"../utils":89,"./visitor":97}],91:[function(require,module,exports){
 function ImportSequencer(onSequencerEmpty) {
     this.imports = [];
     this.variableImports = [];
@@ -10892,7 +11060,7 @@ ImportSequencer.prototype.tryRun = function() {
 
 module.exports = ImportSequencer;
 
-},{}],90:[function(require,module,exports){
+},{}],92:[function(require,module,exports){
 var contexts = require('../contexts'),
     Visitor = require('./visitor'),
     ImportSequencer = require('./import-sequencer'),
@@ -11084,7 +11252,7 @@ ImportVisitor.prototype = {
 };
 module.exports = ImportVisitor;
 
-},{"../contexts":12,"../utils":87,"./import-sequencer":89,"./visitor":95}],91:[function(require,module,exports){
+},{"../contexts":12,"../utils":89,"./import-sequencer":91,"./visitor":97}],93:[function(require,module,exports){
 var visitors = {
     Visitor: require('./visitor'),
     ImportVisitor: require('./import-visitor'),
@@ -11096,7 +11264,7 @@ var visitors = {
 
 module.exports = visitors;
 
-},{"./extend-visitor":88,"./import-visitor":90,"./join-selector-visitor":92,"./set-tree-visibility-visitor":93,"./to-css-visitor":94,"./visitor":95}],92:[function(require,module,exports){
+},{"./extend-visitor":90,"./import-visitor":92,"./join-selector-visitor":94,"./set-tree-visibility-visitor":95,"./to-css-visitor":96,"./visitor":97}],94:[function(require,module,exports){
 var Visitor = require('./visitor');
 
 var JoinSelectorVisitor = function() {
@@ -11149,7 +11317,7 @@ JoinSelectorVisitor.prototype = {
 
 module.exports = JoinSelectorVisitor;
 
-},{"./visitor":95}],93:[function(require,module,exports){
+},{"./visitor":97}],95:[function(require,module,exports){
 var SetTreeVisibilityVisitor = function(visible) {
     this.visible = visible;
 };
@@ -11188,7 +11356,7 @@ SetTreeVisibilityVisitor.prototype.visit = function(node) {
     return node;
 };
 module.exports = SetTreeVisibilityVisitor;
-},{}],94:[function(require,module,exports){
+},{}],96:[function(require,module,exports){
 var tree = require('../tree'),
     Visitor = require('./visitor');
 
@@ -11550,7 +11718,7 @@ ToCSSVisitor.prototype = {
 
 module.exports = ToCSSVisitor;
 
-},{"../tree":65,"./visitor":95}],95:[function(require,module,exports){
+},{"../tree":67,"./visitor":97}],97:[function(require,module,exports){
 var tree = require('../tree');
 
 var _visitArgs = { visitDeeper: true },
@@ -11706,7 +11874,7 @@ Visitor.prototype = {
 };
 module.exports = Visitor;
 
-},{"../tree":65}],96:[function(require,module,exports){
+},{"../tree":67}],98:[function(require,module,exports){
 "use strict";
 
 // rawAsap provides everything we need except exception management.
@@ -11774,7 +11942,7 @@ RawTask.prototype.call = function () {
     }
 };
 
-},{"./raw":97}],97:[function(require,module,exports){
+},{"./raw":99}],99:[function(require,module,exports){
 (function (global){
 "use strict";
 
@@ -12001,7 +12169,7 @@ rawAsap.makeRequestCallFromTimer = makeRequestCallFromTimer;
 // https://github.com/tildeio/rsvp.js/blob/cddf7232546a9cf858524b75cde6f9edf72620a7/lib/rsvp/asap.js
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],98:[function(require,module,exports){
+},{}],100:[function(require,module,exports){
 'use strict';
 
 var asap = require('asap/raw');
@@ -12216,7 +12384,7 @@ function doResolve(fn, promise) {
   }
 }
 
-},{"asap/raw":97}],99:[function(require,module,exports){
+},{"asap/raw":99}],101:[function(require,module,exports){
 'use strict';
 
 //This file contains the ES6 extensions to the core Promises/A+ API
@@ -12325,7 +12493,7 @@ Promise.prototype['catch'] = function (onRejected) {
   return this.then(null, onRejected);
 };
 
-},{"./core.js":98}],100:[function(require,module,exports){
+},{"./core.js":100}],102:[function(require,module,exports){
 // should work in any browser without browserify
 
 if (typeof Promise.prototype.done !== 'function') {
@@ -12338,7 +12506,7 @@ if (typeof Promise.prototype.done !== 'function') {
     })
   }
 }
-},{}],101:[function(require,module,exports){
+},{}],103:[function(require,module,exports){
 // not "use strict" so we can declare global "Promise"
 
 var asap = require('asap');
@@ -12350,5 +12518,5 @@ if (typeof Promise === 'undefined') {
 
 require('./polyfill-done.js');
 
-},{"./lib/core.js":98,"./lib/es6-extensions.js":99,"./polyfill-done.js":100,"asap":96}]},{},[2])(2)
+},{"./lib/core.js":100,"./lib/es6-extensions.js":101,"./polyfill-done.js":102,"asap":98}]},{},[2])(2)
 });
\ No newline at end of file
diff --git a/dist/less.min.js b/dist/less.min.js
index 707af3315..862c4ac28 100644
--- a/dist/less.min.js
+++ b/dist/less.min.js
@@ -1,5 +1,5 @@
 /*!
- * Less - Leaner CSS v3.6.0
+ * Less - Leaner CSS v3.7.0
  * http://lesscss.org
  *
  * Copyright (c) 2009-2018, Alexis Sellier <self@cloudhead.net>
@@ -10,9 +10,9 @@
  /** * @license Apache-2.0
  */
 
-!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,b.less=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(a,b){d(b,e.currentScript(a)),void 0===b.isFileProtocol&&(b.isFileProtocol=/^(file|(chrome|safari)(-extension)?|resource|qrc|app):/.test(a.location.protocol)),b.async=b.async||!1,b.fileAsync=b.fileAsync||!1,b.poll=b.poll||(b.isFileProtocol?1e3:1500),b.env=b.env||("127.0.0.1"==a.location.hostname||"0.0.0.0"==a.location.hostname||"localhost"==a.location.hostname||a.location.port&&a.location.port.length>0||b.isFileProtocol?"development":"production");var c=/!dumpLineNumbers:(comments|mediaquery|all)/.exec(a.location.hash);c&&(b.dumpLineNumbers=c[1]),void 0===b.useFileCache&&(b.useFileCache=!0),void 0===b.onReady&&(b.onReady=!0),b.javascriptEnabled=!(!b.javascriptEnabled&&!b.inlineJavaScript)}},{"./browser":3,"./utils":11}],2:[function(a,b,c){function d(a){a.filename&&console.warn(a),e.async||h.removeChild(i)}a("promise/polyfill");var e=a("../less/default-options")();if(window.less)for(key in window.less)window.less.hasOwnProperty(key)&&(e[key]=window.less[key]);a("./add-default-options")(window,e),e.plugins=e.plugins||[],window.LESS_PLUGINS&&(e.plugins=e.plugins.concat(window.LESS_PLUGINS));var f=b.exports=a("./index")(window,e);window.less=f;var g,h,i;e.onReady&&(/!watch/.test(window.location.hash)&&f.watch(),e.async||(g="body { display: none !important }",h=document.head||document.getElementsByTagName("head")[0],i=document.createElement("style"),i.type="text/css",i.styleSheet?i.styleSheet.cssText=g:i.appendChild(document.createTextNode(g)),h.appendChild(i)),f.registerStylesheetsImmediately(),f.pageLoadFinished=f.refresh("development"===f.env).then(d,d))},{"../less/default-options":16,"./add-default-options":1,"./index":8,"promise/polyfill":101}],3:[function(a,b,c){var d=a("./utils");b.exports={createCSS:function(a,b,c){var e=c.href||"",f="less:"+(c.title||d.extractId(e)),g=a.getElementById(f),h=!1,i=a.createElement("style");i.setAttribute("type","text/css"),c.media&&i.setAttribute("media",c.media),i.id=f,i.styleSheet||(i.appendChild(a.createTextNode(b)),h=null!==g&&g.childNodes.length>0&&i.childNodes.length>0&&g.firstChild.nodeValue===i.firstChild.nodeValue);var j=a.getElementsByTagName("head")[0];if(null===g||h===!1){var k=c&&c.nextSibling||null;k?k.parentNode.insertBefore(i,k):j.appendChild(i)}if(g&&h===!1&&g.parentNode.removeChild(g),i.styleSheet)try{i.styleSheet.cssText=b}catch(l){throw new Error("Couldn't reassign styleSheet.cssText.")}},currentScript:function(a){var b=a.document;return b.currentScript||function(){var a=b.getElementsByTagName("script");return a[a.length-1]}()}}},{"./utils":11}],4:[function(a,b,c){b.exports=function(a,b,c){var d=null;if("development"!==b.env)try{d="undefined"==typeof a.localStorage?null:a.localStorage}catch(e){}return{setCSS:function(a,b,e,f){if(d){c.info("saving "+a+" to cache.");try{d.setItem(a,f),d.setItem(a+":timestamp",b),e&&d.setItem(a+":vars",JSON.stringify(e))}catch(g){c.error('failed to save "'+a+'" to local storage for caching.')}}},getCSS:function(a,b,c){var e=d&&d.getItem(a),f=d&&d.getItem(a+":timestamp"),g=d&&d.getItem(a+":vars");if(c=c||{},g=g||"{}",f&&b.lastModified&&new Date(b.lastModified).valueOf()===new Date(f).valueOf()&&JSON.stringify(c)===g)return e}}}},{}],5:[function(a,b,c){var d=a("./utils"),e=a("./browser");b.exports=function(a,b,c){function f(b,f){var g,h,i="less-error-message:"+d.extractId(f||""),j='<li><label>{line}</label><pre class="{class}">{content}</pre></li>',k=a.document.createElement("div"),l=[],m=b.filename||f,n=m.match(/([^\/]+(\?.*)?)$/)[1];k.id=i,k.className="less-error-message",h="<h3>"+(b.type||"Syntax")+"Error: "+(b.message||"There is an error in your .less file")+'</h3><p>in <a href="'+m+'">'+n+"</a> ";var o=function(a,b,c){void 0!==a.extract[b]&&l.push(j.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};b.line&&(o(b,0,""),o(b,1,"line"),o(b,2,""),h+="on line "+b.line+", column "+(b.column+1)+":</p><ul>"+l.join("")+"</ul>"),b.stack&&(b.extract||c.logLevel>=4)&&(h+="<br/>Stack Trace</br />"+b.stack.split("\n").slice(1).join("<br/>")),k.innerHTML=h,e.createCSS(a.document,[".less-error-message ul, .less-error-message li {","list-style-type: none;","margin-right: 15px;","padding: 4px 0;","margin: 0;","}",".less-error-message label {","font-size: 12px;","margin-right: 15px;","padding: 4px 0;","color: #cc7777;","}",".less-error-message pre {","color: #dd6666;","padding: 4px 0;","margin: 0;","display: inline-block;","}",".less-error-message pre.line {","color: #ff0000;","}",".less-error-message h3 {","font-size: 20px;","font-weight: bold;","padding: 15px 0 5px 0;","margin: 0;","}",".less-error-message a {","color: #10a","}",".less-error-message .error {","color: red;","font-weight: bold;","padding-bottom: 2px;","border-bottom: 1px dashed red;","}"].join("\n"),{title:"error-message"}),k.style.cssText=["font-family: Arial, sans-serif","border: 1px solid #e00","background-color: #eee","border-radius: 5px","-webkit-border-radius: 5px","-moz-border-radius: 5px","color: #e00","padding: 15px","margin-bottom: 15px"].join(";"),"development"===c.env&&(g=setInterval(function(){var b=a.document,c=b.body;c&&(b.getElementById(i)?c.replaceChild(k,b.getElementById(i)):c.insertBefore(k,c.firstChild),clearInterval(g))},10))}function g(b){var c=a.document.getElementById("less-error-message:"+d.extractId(b));c&&c.parentNode.removeChild(c)}function h(a){}function i(a){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?h(a):"function"==typeof c.errorReporting&&c.errorReporting("remove",a):g(a)}function j(a,d){var e="{line} {content}",f=a.filename||d,g=[],h=(a.type||"Syntax")+"Error: "+(a.message||"There is an error in your .less file")+" in "+f,i=function(a,b,c){void 0!==a.extract[b]&&g.push(e.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};a.line&&(i(a,0,""),i(a,1,"line"),i(a,2,""),h+=" on line "+a.line+", column "+(a.column+1)+":\n"+g.join("\n")),a.stack&&(a.extract||c.logLevel>=4)&&(h+="\nStack Trace\n"+a.stack),b.logger.error(h)}function k(a,b){c.errorReporting&&"html"!==c.errorReporting?"console"===c.errorReporting?j(a,b):"function"==typeof c.errorReporting&&c.errorReporting("add",a,b):f(a,b)}return{add:k,remove:i}}},{"./browser":3,"./utils":11}],6:[function(a,b,c){b.exports=function(b,c){var d=a("../less/environment/abstract-file-manager.js"),e={},f=function(){};return f.prototype=new d,f.prototype.alwaysMakePathsAbsolute=function(){return!0},f.prototype.join=function(a,b){return a?this.extractUrlParts(b,a).path:b},f.prototype.doXHR=function(a,d,e,f){function g(b,c,d){b.status>=200&&b.status<300?c(b.responseText,b.getResponseHeader("Last-Modified")):"function"==typeof d&&d(b.status,a)}var h=new XMLHttpRequest,i=!b.isFileProtocol||b.fileAsync;"function"==typeof h.overrideMimeType&&h.overrideMimeType("text/css"),c.debug("XHR: Getting '"+a+"'"),h.open("GET",a,i),h.setRequestHeader("Accept",d||"text/x-less, text/css; q=0.9, */*; q=0.5"),h.send(null),b.isFileProtocol&&!b.fileAsync?0===h.status||h.status>=200&&h.status<300?e(h.responseText):f(h.status,a):i?h.onreadystatechange=function(){4==h.readyState&&g(h,e,f)}:g(h,e,f)},f.prototype.supports=function(a,b,c,d){return!0},f.prototype.clearFileCache=function(){e={}},f.prototype.loadFile=function(a,b,c,d){b&&!this.isPathAbsolute(a)&&(a=b+a),a=c.ext?this.tryAppendExtension(a,c.ext):a,c=c||{};var f=this.extractUrlParts(a,window.location.href),g=f.url,h=this;return new Promise(function(a,b){if(c.useFileCache&&e[g])try{var d=e[g];return a({contents:d,filename:g,webInfo:{lastModified:new Date}})}catch(f){return b({filename:g,message:"Error loading file "+g+" error was "+f.message})}h.doXHR(g,c.mime,function(b,c){e[g]=b,a({contents:b,filename:g,webInfo:{lastModified:c}})},function(a,c){b({type:"File",message:"'"+c+"' wasn't found ("+a+")",href:g})})})},f}},{"../less/environment/abstract-file-manager.js":17}],7:[function(a,b,c){b.exports=function(){function b(){throw{type:"Runtime",message:"Image size functions are not supported in browser version of less"}}var c=a("./../less/functions/function-registry"),d={"image-size":function(a){return b(this,a),-1},"image-width":function(a){return b(this,a),-1},"image-height":function(a){return b(this,a),-1}};c.addMultiple(d)}},{"./../less/functions/function-registry":26}],8:[function(a,b,c){var d=a("./utils").addDataAttr,e=a("./browser");b.exports=function(b,c){function f(a){return JSON.parse(JSON.stringify(a||{}))}function g(a,b){var c=Array.prototype.slice.call(arguments,2);return function(){var d=c.concat(Array.prototype.slice.call(arguments,0));return a.apply(b,d)}}function h(a){for(var b,d=l.getElementsByTagName("style"),e=0;e<d.length;e++)if(b=d[e],b.type.match(s)){var h=f(c);h.modifyVars=a;var i=b.innerHTML||"";h.filename=l.location.href.replace(/#.*$/,""),m.render(i,h,g(function(a,b,c){b?q.add(b,"inline"):(a.type="text/css",a.styleSheet?a.styleSheet.cssText=c.css:a.innerHTML=c.css)},null,b))}}function i(a,b,e,g,h){function i(c){var d=c.contents,f=c.filename,h=c.webInfo,i={currentDirectory:p.getPath(f),filename:f,rootFilename:f,relativeUrls:j.relativeUrls};if(i.entryPath=i.currentDirectory,i.rootpath=j.rootpath||i.currentDirectory,h){h.remaining=g;var k=r.getCSS(f,h,j.modifyVars);if(!e&&k)return h.local=!0,void b(null,k,d,a,h,f)}q.remove(f),j.rootFileInfo=i,m.render(d,j,function(c,e){c?(c.href=f,b(c)):(r.setCSS(a.href,h.lastModified,j.modifyVars,e.css),b(null,e.css,d,a,h,f))})}var j=f(c);d(j,a),j.mime=a.type,h&&(j.modifyVars=h),p.loadFile(a.href,null,j,n).then(function(a){i(a)})["catch"](function(a){console.log(a),b(a)})}function j(a,b,c){for(var d=0;d<m.sheets.length;d++)i(m.sheets[d],a,b,m.sheets.length-(d+1),c)}function k(){"development"===m.env&&(m.watchTimer=setInterval(function(){m.watchMode&&(p.clearFileCache(),j(function(a,c,d,f,g){a?q.add(a,a.href||f.href):c&&e.createCSS(b.document,c,f)}))},c.poll))}var l=b.document,m=a("../less")();m.options=c;var n=m.environment,o=a("./file-manager")(c,m.logger),p=new o;n.addFileManager(p),m.FileManager=o,m.PluginLoader=a("./plugin-loader"),a("./log-listener")(m,c);var q=a("./error-reporting")(b,m,c),r=m.cache=c.cache||a("./cache")(b,c,m.logger);a("./image-size")(m.environment),c.functions&&m.functions.functionRegistry.addMultiple(c.functions);var s=/^text\/(x-)?less$/;return m.watch=function(){return m.watchMode||(m.env="development",k()),this.watchMode=!0,!0},m.unwatch=function(){return clearInterval(m.watchTimer),this.watchMode=!1,!1},m.registerStylesheetsImmediately=function(){var a=l.getElementsByTagName("link");m.sheets=[];for(var b=0;b<a.length;b++)("stylesheet/less"===a[b].rel||a[b].rel.match(/stylesheet/)&&a[b].type.match(s))&&m.sheets.push(a[b])},m.registerStylesheets=function(){return new Promise(function(a,b){m.registerStylesheetsImmediately(),a()})},m.modifyVars=function(a){return m.refresh(!0,a,!1)},m.refresh=function(a,c,d){return(a||d)&&d!==!1&&p.clearFileCache(),new Promise(function(d,f){var g,i,k,l;g=i=new Date,l=m.sheets.length,0===l?(i=new Date,k=i-g,m.logger.info("Less has finished and no sheets were loaded."),d({startTime:g,endTime:i,totalMilliseconds:k,sheets:m.sheets.length})):j(function(a,c,h,j,n){return a?(q.add(a,a.href||j.href),void f(a)):(m.logger.info(n.local?"Loading "+j.href+" from cache.":"Rendered "+j.href+" successfully."),e.createCSS(b.document,c,j),m.logger.info("CSS for "+j.href+" generated in "+(new Date-i)+"ms"),l--,0===l&&(k=new Date-g,m.logger.info("Less has finished. CSS generated in "+k+"ms"),d({startTime:g,endTime:i,totalMilliseconds:k,sheets:m.sheets.length})),void(i=new Date))},a,c),h(c)})},m.refreshStyles=h,m}},{"../less":35,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],9:[function(a,b,c){b.exports=function(a,b){var c=4,d=3,e=2,f=1;b.logLevel="undefined"!=typeof b.logLevel?b.logLevel:"development"===b.env?d:f,b.loggers||(b.loggers=[{debug:function(a){b.logLevel>=c&&console.log(a)},info:function(a){b.logLevel>=d&&console.log(a)},warn:function(a){b.logLevel>=e&&console.warn(a)},error:function(a){b.logLevel>=f&&console.error(a)}}]);for(var g=0;g<b.loggers.length;g++)a.logger.addListener(b.loggers[g])}},{}],10:[function(a,b,c){var d=a("../less/environment/abstract-plugin-loader.js"),e=function(a){this.less=a};e.prototype=new d,e.prototype.loadPlugin=function(a,b,c,d,e){return new Promise(function(f,g){e.loadFile(a,b,c,d).then(f)["catch"](g)})},b.exports=e},{"../less/environment/abstract-plugin-loader.js":18}],11:[function(a,b,c){b.exports={extractId:function(a){return a.replace(/^[a-z-]+:\/+?[^\/]+/,"").replace(/[\?\&]livereload=\w+/,"").replace(/^\//,"").replace(/\.[a-zA-Z]+$/,"").replace(/[^\.\w-]+/g,"-").replace(/\./g,":")},addDataAttr:function(a,b){for(var c in b.dataset)if(b.dataset.hasOwnProperty(c))if("env"===c||"dumpLineNumbers"===c||"rootpath"===c||"errorReporting"===c)a[c]=b.dataset[c];else try{a[c]=JSON.parse(b.dataset[c])}catch(d){}}}},{}],12:[function(a,b,c){var d={};b.exports=d;var e=function(a,b,c){if(a)for(var d=0;d<c.length;d++)a.hasOwnProperty(c[d])&&(b[c[d]]=a[c[d]])},f=["paths","relativeUrls","rootpath","strictImports","insecure","dumpLineNumbers","compress","syncImport","chunkInput","mime","useFileCache","processImports","pluginManager"];d.Parse=function(a){e(a,this,f),"string"==typeof this.paths&&(this.paths=[this.paths])};var g=["paths","compress","ieCompat","strictMath","strictUnits","sourceMap","importMultiple","urlArgs","javascriptEnabled","pluginManager","importantScope"];d.Eval=function(a,b){e(a,this,g),"string"==typeof this.paths&&(this.paths=[this.paths]),this.frames=b||[],this.importantScope=this.importantScope||[]},d.Eval.prototype.enterCalc=function(){this.calcStack||(this.calcStack=[]),this.calcStack.push(!0),this.inCalc=!0},d.Eval.prototype.exitCalc=function(){this.calcStack.pop(),this.calcStack||(this.inCalc=!1)},d.Eval.prototype.inParenthesis=function(){this.parensStack||(this.parensStack=[]),this.parensStack.push(!0)},d.Eval.prototype.outOfParenthesis=function(){this.parensStack.pop()},d.Eval.prototype.inCalc=!1,d.Eval.prototype.mathOn=!0,d.Eval.prototype.isMathOn=function(){return!!this.mathOn&&(!this.strictMath||this.parensStack&&this.parensStack.length)},d.Eval.prototype.isPathRelative=function(a){return!/^(?:[a-z-]+:|\/|#)/i.test(a)},d.Eval.prototype.normalizePath=function(a){var b,c=a.split("/").reverse();for(a=[];0!==c.length;)switch(b=c.pop()){case".":break;case"..":0===a.length||".."===a[a.length-1]?a.push(b):a.pop();break;default:a.push(b)}return 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if(a=b.variable()||b.mixinLookup(),a&&(c.push(a),!q.$char(",")))break;while(a);return c.length>0?c:null},media:function(){var b,d,f,g,h=q.i;return a.dumpLineNumbers&&(g=n(h)),q.save(),q.$str("@media")?(b=this.mediaFeatures(),d=this.block(),d||j("media definitions require block statements after any features"),q.forget(),f=new e.Media(d,b,h,c),a.dumpLineNumbers&&(f.debugInfo=g),f):void q.restore()},plugin:function(){var a,b,d,f=q.i,g=q.$re(/^@plugin?\s+/);if(g){if(b=this.pluginArgs(),d=b?{pluginArgs:b,isPlugin:!0}:{isPlugin:!0},a=this.entities.quoted()||this.entities.url())return q.$char(";")||(q.i=f,j("missing semi-colon on @plugin")),new e.Import(a,null,d,f,c);q.i=f,j("malformed @plugin statement")}},pluginArgs:function(){if(q.save(),!q.$char("("))return q.restore(),null;var a=q.$re(/^\s*([^\);]+)\)\s*/);return a[1]?(q.forget(),a[1].trim()):(q.restore(),null)},atrule:function(){var b,d,f,g,h,i,k,l=q.i,m=!0,o=!0;if("@"===q.currentChar()){if(d=this["import"]()||this.plugin()||this.media())return d;if(q.save(),b=q.$re(/^@[a-z-]+/)){switch(g=b,"-"==b.charAt(1)&&b.indexOf("-",2)>0&&(g="@"+b.slice(b.indexOf("-",2)+1)),g){case"@charset":h=!0,m=!1;break;case"@namespace":i=!0,m=!1;break;case"@keyframes":case"@counter-style":h=!0;break;case"@document":case"@supports":k=!0,o=!1;break;default:k=!0}return q.commentStore.length=0,h?(d=this.entity(),d||j("expected "+b+" identifier")):i?(d=this.expression(),d||j("expected "+b+" expression")):k&&(d=this.permissiveValue(/^[{;]/),m="{"===q.currentChar(),d?d.value||(d=null):m||";"===q.currentChar()||j(b+" rule is missing block or ending semi-colon")),m&&(f=this.blockRuleset()),f||!m&&d&&q.$char(";")?(q.forget(),new e.AtRule(b,d,f,l,c,a.dumpLineNumbers?n(l):null,o)):void q.restore("at-rule options not recognised")}}},value:function(){var a,b=[],c=q.i;do if(a=this.expression(),a&&(b.push(a),!q.$char(",")))break;while(a);if(b.length>0)return new e.Value(b,c)},important:function(){if("!"===q.currentChar())return q.$re(/^! *important/)},sub:function(){var a,b;return q.save(),q.$char("(")?(a=this.addition(),a&&q.$char(")")?(q.forget(),b=new e.Expression([a]),b.parens=!0,b):void q.restore("Expected ')'")):void q.restore()},multiplication:function(){var a,b,c,d,f;if(a=this.operand()){for(f=q.isWhitespace(-1);;){if(q.peek(/^\/[*\/]/))break;if(q.save(),c=q.$char("/")||q.$char("*"),!c){q.forget();break}if(b=this.operand(),!b){q.restore();break}q.forget(),a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=q.isWhitespace(-1)}return d||a}},addition:function(){var a,b,c,d,f;if(a=this.multiplication()){for(f=q.isWhitespace(-1);;){if(c=q.$re(/^[-+]\s+/)||!f&&(q.$char("+")||q.$char("-")),!c)break;if(b=this.multiplication(),!b)break;a.parensInOp=!0,b.parensInOp=!0,d=new e.Operation(c,[d||a,b],f),f=q.isWhitespace(-1)}return 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q.save(),q.$str("(")?(c=b(this))?(q.forget(),c):(c=this.atomicCondition(a))?q.$char(")")?(q.forget(),c):void q.restore("expected ')' got '"+q.currentChar()+"'"):void q.restore():void q.restore()},atomicCondition:function(a){function b(){return this.addition()||h.keyword()||h.quoted()||h.mixinLookup()}var c,d,f,g,h=this.entities,i=q.i;if(b=b.bind(this),c=b())return q.$char(">")?g=q.$char("=")?">=":">":q.$char("<")?g=q.$char("=")?"<=":"<":q.$char("=")&&(g=q.$char(">")?"=>":q.$char("<")?"=<":"="),g?(d=b(),d?f=new e.Condition(g,c,d,i,(!1)):j("expected expression")):f=new e.Condition("=",c,new e.Keyword("true"),i,(!1)),f},operand:function(){var a,b=this.entities;q.peek(/^-[@\$\(]/)&&(a=q.$char("-"));var c=this.sub()||b.dimension()||b.color()||b.variable()||b.property()||b.call()||b.quoted(!0)||b.colorKeyword()||b.mixinLookup();return a&&(c.parensInOp=!0,c=new e.Negative(c)),c},expression:function(){var a,b,c=[],d=q.i;do 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a({contentsIgnoredCharsMap:d.contentsIgnoredChars,rootNode:b,contentsMap:d.contents,sourceMapFilename:this.options.sourceMapFilename,sourceMapURL:this.options.sourceMapURL,outputFilename:this.options.sourceMapOutputFilename,sourceMapBasepath:this.options.sourceMapBasepath,sourceMapRootpath:this.options.sourceMapRootpath,outputSourceFiles:this.options.outputSourceFiles,sourceMapGenerator:this.options.sourceMapGenerator,sourceMapFileInline:this.options.sourceMapFileInline}),f=e.toCSS(c);return this.sourceMap=e.sourceMap,this.sourceMapURL=e.sourceMapURL,this.options.sourceMapInputFilename&&(this.sourceMapInputFilename=e.normalizeFilename(this.options.sourceMapInputFilename)),void 0!==this.options.sourceMapBasepath&&void 0!==this.sourceMapURL&&(this.sourceMapURL=e.removeBasepath(this.sourceMapURL)),f+this.getCSSAppendage()},c.prototype.getCSSAppendage=function(){var a=this.sourceMapURL;if(this.options.sourceMapFileInline){if(void 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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.removeBasepath=function(a){return this._sourceMapBasepath&&0===a.indexOf(this._sourceMapBasepath)&&(a=a.substring(this._sourceMapBasepath.length),"\\"!==a.charAt(0)&&"/"!==a.charAt(0)||(a=a.substring(1))),a},b.prototype.normalizeFilename=function(a){return a=a.replace(/\\/g,"/"),a=this.removeBasepath(a),(this._sourceMapRootpath||"")+a},b.prototype.add=function(a,b,c,d){if(a){var e,f,g,h,i;if(b){var j=this._contentsMap[b.filename];this._contentsIgnoredCharsMap[b.filename]&&(c-=this._contentsIgnoredCharsMap[b.filename],c<0&&(c=0),j=j.slice(this._contentsIgnoredCharsMap[b.filename])),j=j.substring(0,c),f=j.split("\n"),h=f[f.length-1]}if(e=a.split("\n"),g=e[e.length-1],b)if(d)for(i=0;i<e.length;i++)this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+i+1,column:0===i?this._column:0},original:{line:f.length+i,column:0===i?h.length:0},source:this.normalizeFilename(b.filename)});else this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+1,column:this._column},original:{line:f.length,column:h.length},source:this.normalizeFilename(b.filename)});1===e.length?this._column+=g.length:(this._lineNumber+=e.length-1,this._column=g.length),this._css.push(a)}},b.prototype.isEmpty=function(){return 0===this._css.length},b.prototype.toCSS=function(a){if(this._sourceMapGenerator=new this._sourceMapGeneratorConstructor({file:this._outputFilename,sourceRoot:null}),this._outputSourceFiles)for(var b in this._contentsMap)if(this._contentsMap.hasOwnProperty(b)){var c=this._contentsMap[b];this._contentsIgnoredCharsMap[b]&&(c=c.slice(this._contentsIgnoredCharsMap[b])),this._sourceMapGenerator.setSourceContent(this.normalizeFilename(b),c)}if(this._rootNode.genCSS(a,this),this._css.length>0){var d,e=JSON.stringify(this._sourceMapGenerator.toJSON());this.sourceMapURL?d=this.sourceMapURL:this._sourceMapFilename&&(d=this._sourceMapFilename),this.sourceMapURL=d,this.sourceMap=e}return this._css.join("")},b}},{}],47:[function(a,b,c){var d=a("./contexts"),e=a("./visitors"),f=a("./tree");b.exports=function(a,b){b=b||{};var c,g=b.variables,h=new d.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof f.Value||(b instanceof f.Expression||(b=new f.Expression([b])),b=new f.Value([b])),new f.Declaration("@"+a,b,(!1),null,0)}),h.frames=[new f.Ruleset(null,g)]);var i,j,k=[new e.JoinSelectorVisitor,new e.MarkVisibleSelectorsVisitor((!0)),new e.ExtendVisitor,new e.ToCSSVisitor({compress:Boolean(b.compress)})],l=[];if(b.pluginManager){j=b.pluginManager.visitor();for(var m=0;m<2;m++)for(j.first();i=j.get();)i.isPreEvalVisitor?0!==m&&l.indexOf(i)!==-1||(l.push(i),i.run(a)):0!==m&&k.indexOf(i)!==-1||(i.isPreVisitor?k.unshift(i):k.push(i))}c=a.eval(h);for(var m=0;m<k.length;m++)k[m].run(c);if(b.pluginManager)for(j.first();i=j.get();)k.indexOf(i)===-1&&l.indexOf(i)===-1&&i.run(c);return c}},{"./contexts":12,"./tree":65,"./visitors":91}],48:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e,f){this.value=a,this._index=b,this._fileInfo=c,this.mapLines=d,this.rulesetLike="undefined"!=typeof e&&e,this.allowRoot=!0,this.copyVisibilityInfo(f)};e.prototype=new d,e.prototype.type="Anonymous",e.prototype.eval=function(){return new e(this.value,this._index,this._fileInfo,this.mapLines,this.rulesetLike,this.visibilityInfo())},e.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},e.prototype.isRulesetLike=function(){return this.rulesetLike},e.prototype.genCSS=function(a,b){this.nodeVisible=Boolean(this.value),this.nodeVisible&&b.add(this.value,this._fileInfo,this._index,this.mapLines)},b.exports=e},{"./node":74}],49:[function(a,b,c){var d=a("./node"),e=function(a,b){this.key=a,this.value=b};e.prototype=new d,e.prototype.type="Assignment",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.eval=function(a){return this.value.eval?new e(this.key,this.value.eval(a)):this},e.prototype.genCSS=function(a,b){b.add(this.key+"="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value)},b.exports=e},{"./node":74}],50:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./ruleset"),g=a("./anonymous"),h=function(a,b,c,f,h,i,j,k){var l;if(this.name=a,this.value=b instanceof d?b:b?new g(b):b,c){for(Array.isArray(c)?this.rules=c:(this.rules=[c],this.rules[0].selectors=new e([],null,null,f,h).createEmptySelectors()),l=0;l<this.rules.length;l++)this.rules[l].allowImports=!0;this.setParent(this.rules,this)}this._index=f,this._fileInfo=h,this.debugInfo=i,this.isRooted=j||!1,this.copyVisibilityInfo(k),this.allowRoot=!0};h.prototype=new d,h.prototype.type="AtRule",h.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visitArray(c)),b&&(this.value=a.visit(b))},h.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},h.prototype.isCharset=function(){return"@charset"===this.name},h.prototype.genCSS=function(a,b){var c=this.value,d=this.rules;b.add(this.name,this.fileInfo(),this.getIndex()),c&&(b.add(" "),c.genCSS(a,b)),d?this.outputRuleset(a,b,d):b.add(";")},h.prototype.eval=function(a){var b,c,d=this.value,e=this.rules;return b=a.mediaPath,c=a.mediaBlocks,a.mediaPath=[],a.mediaBlocks=[],d&&(d=d.eval(a)),e&&(e=[e[0].eval(a)],e[0].root=!0),a.mediaPath=b,a.mediaBlocks=c,new h(this.name,d,e,this.getIndex(),this.fileInfo(),this.debugInfo,this.isRooted,this.visibilityInfo())},h.prototype.variable=function(a){if(this.rules)return f.prototype.variable.call(this.rules[0],a)},h.prototype.find=function(){if(this.rules)return f.prototype.find.apply(this.rules[0],arguments)},h.prototype.rulesets=function(){if(this.rules)return f.prototype.rulesets.apply(this.rules[0])},h.prototype.outputRuleset=function(a,b,c){var d,e=c.length;if(a.tabLevel=(0|a.tabLevel)+1,a.compress){for(b.add("{"),d=0;d<e;d++)c[d].genCSS(a,b);return b.add("}"),void a.tabLevel--}var f="\n"+Array(a.tabLevel).join("  "),g=f+"  ";if(e){for(b.add(" {"+g),c[0].genCSS(a,b),d=1;d<e;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=h},{"./anonymous":48,"./node":74,"./ruleset":79,"./selector":80}],51:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.key=a,this.op=b,this.value=c};e.prototype=new 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c},h.prototype.operate=function(a,b,c){for(var d=new Array(3),e=this.alpha*(1-c.alpha)+c.alpha,f=0;f<3;f++)d[f]=this._operate(a,b,this.rgb[f],c.rgb[f]);return new h(d,e)},h.prototype.toRGB=function(){return e(this.rgb)},h.prototype.toHSL=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=(g+h)/2,j=g-h;if(g===h)a=b=0;else{switch(b=i>.5?j/(2-g-h):j/(g+h),g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,l:i,a:f}},h.prototype.toHSV=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=g,j=g-h;if(b=0===g?0:j/g,g===h)a=0;else{switch(g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,v:i,a:f}},h.prototype.toARGB=function(){return e([255*this.alpha].concat(this.rgb))},h.prototype.compare=function(a){return a.rgb&&a.rgb[0]===this.rgb[0]&&a.rgb[1]===this.rgb[1]&&a.rgb[2]===this.rgb[2]&&a.alpha===this.alpha?0:void 0},h.fromKeyword=function(a){var b,c=a.toLowerCase();if(g.hasOwnProperty(c)?b=new h(g[c].slice(1)):"transparent"===c&&(b=new h([0,0,0],0)),b)return b.value=a,b},b.exports=h},{"../data/colors":13,"./node":74}],54:[function(a,b,c){var d=a("./node"),e=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};e.prototype=new d,e.prototype.type="Combinator";var f={"":!0," ":!0,"|":!0};e.prototype.genCSS=function(a,b){var c=a.compress||f[this.value]?"":" ";b.add(c+this.value+c)},b.exports=e},{"./node":74}],55:[function(a,b,c){var d=a("./node"),e=a("./debug-info"),f=function(a,b,c,d){this.value=a,this.isLineComment=b,this._index=c,this._fileInfo=d,this.allowRoot=!0};f.prototype=new 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e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=d.asComment(b);break;case"mediaquery":e=d.asMediaQuery(b);break;case"all":e=d.asComment(b)+(c||"")+d.asMediaQuery(b)}return e};d.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},d.asMediaQuery=function(a){var b=a.debugInfo.fileName;return/^[a-z]+:\/\//i.test(b)||(b="file://"+b),"@media -sass-debug-info{filename{font-family:"+b.replace(/([.:\/\\])/g,function(a){return"\\"==a&&(a="/"),"\\"+a})+"}line{font-family:\\00003"+a.debugInfo.lineNumber+"}}\n"},b.exports=d},{}],58:[function(a,b,c){function d(a,b){var c,d="",e=b.length,f={add:function(a){d+=a}};for(c=0;c<e;c++)b[c].eval(a).genCSS(a,f);return d}var e=a("./node"),f=a("./value"),g=a("./keyword"),h=a("./anonymous"),i=function(a,b,c,d,g,i,j,k){this.name=a,this.value=b instanceof e?b:new f([b?new h(b):null]),this.important=c?" 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"),d=d.concat(a[b].elements);this.selfSelectors=[new e(d)],this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo())},b.exports=f},{"./node":74,"./selector":80}],64:[function(a,b,c){var d=a("./node"),e=a("./media"),f=a("./url"),g=a("./quoted"),h=a("./ruleset"),i=a("./anonymous"),j=a("../utils"),k=a("../less-error"),l=function(a,b,c,d,e,f){if(this.options=c,this._index=d,this._fileInfo=e,this.path=a,this.features=b,this.allowRoot=!0,void 0!==this.options.less||this.options.inline)this.css=!this.options.less||this.options.inline;else{var g=this.getPath();g&&/[#\.\&\?]css([\?;].*)?$/.test(g)&&(this.css=!0)}this.copyVisibilityInfo(f),this.setParent(this.features,this),this.setParent(this.path,this)};l.prototype=new d,l.prototype.type="Import",l.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.path=a.visit(this.path),this.options.isPlugin||this.options.inline||!this.root||(this.root=a.visit(this.root))},l.prototype.genCSS=function(a,b){this.css&&void 0===this.path._fileInfo.reference&&(b.add("@import ",this._fileInfo,this._index),this.path.genCSS(a,b),this.features&&(b.add(" "),this.features.genCSS(a,b)),b.add(";"))},l.prototype.getPath=function(){return this.path instanceof f?this.path.value.value:this.path.value},l.prototype.isVariableImport=function(){var a=this.path;return a instanceof f&&(a=a.value),!(a instanceof g)||a.containsVariables()},l.prototype.evalForImport=function(a){var b=this.path;return b instanceof f&&(b=b.value),new l(b.eval(a),this.features,this.options,this._index,this._fileInfo,this.visibilityInfo())},l.prototype.evalPath=function(a){var b=this.path.eval(a),c=this._fileInfo&&this._fileInfo.rootpath;if(!(b instanceof f)){if(c){var d=b.value;d&&a.isPathRelative(d)&&(b.value=c+d)}b.value=a.normalizePath(b.value)}return b},l.prototype.eval=function(a){var b=this.doEval(a);return(this.options.reference||this.blocksVisibility())&&(b.length||0===b.length?b.forEach(function(a){a.addVisibilityBlock()}):b.addVisibilityBlock()),b},l.prototype.doEval=function(a){var b,c,d=this.features&&this.features.eval(a);if(this.options.isPlugin){if(this.root&&this.root.eval)try{this.root.eval(a)}catch(f){throw f.message="Plugin error during evaluation",new k(f,this.root.imports,this.root.filename)}return c=a.frames[0]&&a.frames[0].functionRegistry,c&&this.root&&this.root.functions&&c.addMultiple(this.root.functions),[]}if(this.skip&&("function"==typeof this.skip&&(this.skip=this.skip()),this.skip))return[];if(this.options.inline){var g=new i(this.root,0,{filename:this.importedFilename,reference:this.path._fileInfo&&this.path._fileInfo.reference},(!0),(!0));return this.features?new e([g],this.features.value):[g]}if(this.css){var m=new l(this.evalPath(a),d,this.options,this._index);if(!m.css&&this.error)throw this.error;return m}return b=new h(null,j.copyArray(this.root.rules)),b.evalImports(a),this.features?new e(b.rules,this.features.value):b.rules},b.exports=l},{"../less-error":36,"../utils":87,"./anonymous":48,"./media":69,"./node":74,"./quoted":78,"./ruleset":79,"./url":83}],65:[function(a,b,c){var d=Object.create(null);d.Node=a("./node"),d.Color=a("./color"),d.AtRule=a("./atrule"),d.DetachedRuleset=a("./detached-ruleset"),d.Operation=a("./operation"),d.Dimension=a("./dimension"),d.Unit=a("./unit"),d.Keyword=a("./keyword"),d.Variable=a("./variable"),d.Property=a("./property"),d.Ruleset=a("./ruleset"),d.Element=a("./element"),d.Attribute=a("./attribute"),d.Combinator=a("./combinator"),d.Selector=a("./selector"),d.Quoted=a("./quoted"),d.Expression=a("./expression"),d.Declaration=a("./declaration"),d.Call=a("./call"),d.URL=a("./url"),d.Import=a("./import"),d.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},d.Comment=a("./comment"),d.Anonymous=a("./anonymous"),d.Value=a("./value"),d.JavaScript=a("./javascript"),d.Assignment=a("./assignment"),d.Condition=a("./condition"),d.Paren=a("./paren"),d.Media=a("./media"),d.UnicodeDescriptor=a("./unicode-descriptor"),d.Negative=a("./negative"),d.Extend=a("./extend"),d.VariableCall=a("./variable-call"),d.NamespaceValue=a("./namespace-value"),b.exports=d},{"./anonymous":48,"./assignment":49,"./atrule":50,"./attribute":51,"./call":52,"./color":53,"./combinator":54,"./comment":55,"./condition":56,"./declaration":58,"./detached-ruleset":59,"./dimension":60,"./element":61,"./expression":62,"./extend":63,"./import":64,"./javascript":66,"./keyword":68,"./media":69,"./mixin-call":70,"./mixin-definition":71,"./namespace-value":72,"./negative":73,"./node":74,"./operation":75,"./paren":76,"./property":77,"./quoted":78,"./ruleset":79,"./selector":80,"./unicode-descriptor":81,"./unit":82,"./url":83,"./value":84,"./variable":86,"./variable-call":85}],66:[function(a,b,c){var d=a("./js-eval-node"),e=a("./dimension"),f=a("./quoted"),g=a("./anonymous"),h=function(a,b,c,d){this.escaped=b,this.expression=a,this._index=c,this._fileInfo=d};h.prototype=new d,h.prototype.type="JavaScript",h.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a),c=typeof b;return"number"!==c||isNaN(b)?"string"===c?new f('"'+b+'"',b,this.escaped,this._index):new g(Array.isArray(b)?b.join(", "):b):new e(b)},b.exports=h},{"./anonymous":48,"./dimension":60,"./js-eval-node":67,"./quoted":78}],67:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(){};f.prototype=new d,f.prototype.evaluateJavaScript=function(a,b){var c,d=this,f={};if(!b.javascriptEnabled)throw{message:"Inline JavaScript is not enabled. Is it set in your options?",filename:this.fileInfo().filename,index:this.getIndex()};a=a.replace(/@\{([\w-]+)\}/g,function(a,c){return d.jsify(new e("@"+c,d.getIndex(),d.fileInfo()).eval(b))});try{a=new Function("return ("+a+")")}catch(g){throw{message:"JavaScript evaluation error: "+g.message+" from `"+a+"`",filename:this.fileInfo().filename,index:this.getIndex()}}var h=b.frames[0].variables();for(var i in h)h.hasOwnProperty(i)&&(f[i.slice(1)]={value:h[i].value,toJS:function(){return this.value.eval(b).toCSS()}});try{c=a.call(f)}catch(g){throw{message:"JavaScript evaluation error: '"+g.name+": "+g.message.replace(/["]/g,"'")+"'",filename:this.fileInfo().filename,index:this.getIndex()}}return c},f.prototype.jsify=function(a){return Array.isArray(a.value)&&a.value.length>1?"["+a.value.map(function(a){return a.toCSS()}).join(", ")+"]":a.toCSS()},b.exports=f},{"./node":74,"./variable":86}],68:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new 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b,c,f=a.mediaPath.concat([this]);for(b=0;b<f.length;b++)c=f[b].features instanceof e?f[b].features.value:f[b].features,f[b]=Array.isArray(c)?c:[c];return this.features=new e(this.permute(f).map(function(a){for(a=a.map(function(a){return a.toCSS?a:new g(a)}),b=a.length-1;b>0;b--)a.splice(b,0,new g("and"));return new h(a)})),this.setParent(this.features,this),new d([],[])},k.prototype.permute=function(a){if(0===a.length)return[];if(1===a.length)return a[0];for(var b=[],c=this.permute(a.slice(1)),d=0;d<c.length;d++)for(var e=0;e<a[0].length;e++)b.push([a[0][e]].concat(c[d]));return b},k.prototype.bubbleSelectors=function(a){a&&(this.rules=[new d(j.copyArray(a),[this.rules[0]])],this.setParent(this.rules,this))},b.exports=k},{"../utils":87,"./anonymous":48,"./atrule":50,"./expression":62,"./ruleset":79,"./selector":80,"./value":84}],70:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./mixin-definition"),g=a("../functions/default"),h=function(a,b,c,d,f){this.selector=new e(a),this.arguments=b||[],this._index=c,this._fileInfo=d,this.important=f,this.allowRoot=!0,this.setParent(this.selector,this)};h.prototype=new d,h.prototype.type="MixinCall",h.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments.length&&(this.arguments=a.visitArray(this.arguments))},h.prototype.eval=function(a){function b(b,c){var d,e,f;for(d=0;d<2;d++){for(x[d]=!0,g.value(d),e=0;e<c.length&&x[d];e++)f=c[e],f.matchCondition&&(x[d]=x[d]&&f.matchCondition(null,a));b.matchCondition&&(x[d]=x[d]&&b.matchCondition(t,a))}return x[0]||x[1]?x[0]!=x[1]?x[1]?A:B:z:y}var c,d,e,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=[],v=!1,w=[],x=[],y=-1,z=0,A=1,B=2;for(this.selector=this.selector.eval(a),j=0;j<this.arguments.length;j++)if(h=this.arguments[j],i=h.value.eval(a),h.expand&&Array.isArray(i.value))for(i=i.value,k=0;k<i.length;k++)t.push({value:i[k]});else t.push({name:h.name,value:i});for(s=function(b){return b.matchArgs(null,a)},j=0;j<a.frames.length;j++)if((c=a.frames[j].find(this.selector,null,s)).length>0){for(n=!0,k=0;k<c.length;k++){for(d=c[k].rule,e=c[k].path,m=!1,l=0;l<a.frames.length;l++)if(!(d instanceof f)&&d===(a.frames[l].originalRuleset||a.frames[l])){m=!0;break}m||d.matchArgs(t,a)&&(o={mixin:d,group:b(d,e)},o.group!==y&&w.push(o),v=!0)}for(g.reset(),q=[0,0,0],k=0;k<w.length;k++)q[w[k].group]++;if(q[z]>0)p=B;else if(p=A,q[A]+q[B]>1)throw{type:"Runtime",message:"Ambiguous use of `default()` found when matching for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename};for(k=0;k<w.length;k++)if(o=w[k].group,o===z||o===p)try{d=w[k].mixin,d instanceof f||(r=d.originalRuleset||d,d=new f("",[],d.rules,null,(!1),null,r.visibilityInfo()),d.originalRuleset=r);var C=d.evalCall(a,t,this.important).rules;this._setVisibilityToReplacement(C),Array.prototype.push.apply(u,C)}catch(D){throw{message:D.message,index:this.getIndex(),filename:this.fileInfo().filename,stack:D.stack}}if(v)return u}throw n?{type:"Runtime",message:"No matching definition was found for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename}:{type:"Name",message:this.selector.toCSS().trim()+" is undefined",index:this.getIndex(),filename:this.fileInfo().filename}},h.prototype._setVisibilityToReplacement=function(a){var b,c;if(this.blocksVisibility())for(b=0;b<a.length;b++)c=a[b],c.addVisibilityBlock()},h.prototype.format=function(a){return this.selector.toCSS().trim()+"("+(a?a.map(function(a){var b="";return a.name&&(b+=a.name+":"),b+=a.value.toCSS?a.value.toCSS():"???"}).join(", "):"")+")"},b.exports=h},{"../functions/default":24,"./mixin-definition":71,"./node":74,"./selector":80}],71:[function(a,b,c){var d=a("./selector"),e=a("./element"),f=a("./ruleset"),g=a("./declaration"),h=a("./detached-ruleset"),i=a("./expression"),j=a("../contexts"),k=a("../utils"),l=function(a,b,c,f,g,h,i){this.name=a,this.selectors=[new d([new e(null,a,(!1),this._index,this._fileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=c,this._lookups={};var j=[];this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:(j.push(b.name),a)},0),this.optionalParameters=j,this.frames=h,this.copyVisibilityInfo(i),this.allowRoot=!0};l.prototype=new f,l.prototype.type="MixinDefinition",l.prototype.evalFirst=!0,l.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))},l.prototype.evalParams=function(a,b,c,d){var e,l,m,n,o,p,q,r,s=new f(null,null),t=k.copyArray(this.params),u=0;if(b.frames&&b.frames[0]&&b.frames[0].functionRegistry&&(s.functionRegistry=b.frames[0].functionRegistry.inherit()),b=new j.Eval(b,[s].concat(b.frames)),c)for(c=k.copyArray(c),u=c.length,m=0;m<u;m++)if(l=c[m],p=l&&l.name){for(q=!1,n=0;n<t.length;n++)if(!d[n]&&p===t[n].name){d[n]=l.value.eval(a),s.prependRule(new g(p,l.value.eval(a))),q=!0;break}if(q){c.splice(m,1),m--;continue}throw{type:"Runtime",message:"Named argument for "+this.name+" "+c[m].name+" not found"}}for(r=0,m=0;m<t.length;m++)if(!d[m]){if(l=c&&c[r],p=t[m].name)if(t[m].variadic){for(e=[],n=r;n<u;n++)e.push(c[n].value.eval(a));s.prependRule(new g(p,new i(e).eval(a)))}else{if(o=l&&l.value)o=Array.isArray(o)?new h(new f("",o)):o.eval(a);else{if(!t[m].value)throw{type:"Runtime",message:"wrong number of arguments for "+this.name+" ("+u+" for "+this.arity+")"};o=t[m].value.eval(b),s.resetCache()}s.prependRule(new g(p,o)),d[m]=o}if(t[m].variadic&&c)for(n=r;n<u;n++)d[n]=c[n].value.eval(a);r++}return s},l.prototype.makeImportant=function(){var a=this.rules?this.rules.map(function(a){return a.makeImportant?a.makeImportant(!0):a}):this.rules,b=new l(this.name,this.params,a,this.condition,this.variadic,this.frames);return b},l.prototype.eval=function(a){return new l(this.name,this.params,this.rules,this.condition,this.variadic,this.frames||k.copyArray(a.frames))},l.prototype.evalCall=function(a,b,c){var d,e,h=[],l=this.frames?this.frames.concat(a.frames):a.frames,m=this.evalParams(a,new j.Eval(a,l),b,h);return m.prependRule(new g("@arguments",new i(h).eval(a))),d=k.copyArray(this.rules),e=new f(null,d),e.originalRuleset=this,e=e.eval(new j.Eval(a,[this,m].concat(l))),c&&(e=e.makeImportant()),e},l.prototype.matchCondition=function(a,b){return!(this.condition&&!this.condition.eval(new j.Eval(b,[this.evalParams(b,new j.Eval(b,this.frames?this.frames.concat(b.frames):b.frames),a,[])].concat(this.frames||[]).concat(b.frames))))},l.prototype.matchArgs=function(a,b){var c,d=a&&a.length||0,e=this.optionalParameters,f=a?a.reduce(function(a,b){return e.indexOf(b.name)<0?a+1:a},0):0;if(this.variadic){if(f<this.required-1)return!1}else{if(f<this.required)return!1;if(d>this.params.length)return!1}c=Math.min(f,this.arity);for(var g=0;g<c;g++)if(!this.params[g].name&&!this.params[g].variadic&&a[g].value.eval(b).toCSS()!=this.params[g].value.eval(b).toCSS())return!1;return!0},b.exports=l},{"../contexts":12,"../utils":87,"./declaration":58,"./detached-ruleset":59,"./element":61,"./expression":62,"./ruleset":79,"./selector":80}],72:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=a("./ruleset"),g=a("./selector"),h=function(a,b,c,d,e){this.value=a,this.lookups=b,this.important=c,this._index=d,this._fileInfo=e};h.prototype=new d,h.prototype.type="NamespaceValue",h.prototype.eval=function(a){var b,c,d=this.value.eval(a);for(b=0;b<this.lookups.length;b++){if(c=this.lookups[b],Array.isArray(d)&&(d=new f([new g],d)),""===c)d=d.lastDeclaration();else if("@"===c.charAt(0)){if("@"===c.charAt(1)&&(c="@"+new e(c.substr(1)).eval(a).value),d.variables&&(d=d.variable(c)),!d)throw{type:"Name",message:"variable "+c+" not found",filename:this.fileInfo().filename,index:this.getIndex()}}else{if(c="$@"===c.substring(0,2)?"$"+new e(c.substr(1)).eval(a).value:"$"===c.charAt(0)?c:"$"+c,d.properties&&(d=d.property(c)),!d)throw{type:"Name",message:'property "'+c.substr(1)+'" not found',filename:this.fileInfo().filename,index:this.getIndex()};d=d[d.length-1]}d.value&&(d=d.eval(a).value),d.ruleset&&(d=d.ruleset.eval(a))}return d},b.exports=h},{"./node":74,"./ruleset":79,"./selector":80,"./variable":86}],73:[function(a,b,c){var d=a("./node"),e=a("./operation"),f=a("./dimension"),g=function(a){this.value=a};g.prototype=new d,g.prototype.type="Negative",g.prototype.genCSS=function(a,b){b.add("-"),this.value.genCSS(a,b)},g.prototype.eval=function(a){return a.isMathOn()?new e("*",[new f((-1)),this.value]).eval(a):new g(this.value.eval(a))},b.exports=g},{"./dimension":60,"./node":74,"./operation":75}],74:[function(a,b,c){var d=function(){this.parent=null,this.visibilityBlocks=void 0,this.nodeVisible=void 0,this.rootNode=null,this.parsed=null;var a=this;Object.defineProperty(this,"currentFileInfo",{get:function(){return a.fileInfo()}}),Object.defineProperty(this,"index",{get:function(){return a.getIndex()}})};d.prototype.setParent=function(a,b){function c(a){a&&a instanceof d&&(a.parent=b)}Array.isArray(a)?a.forEach(c):c(a)},d.prototype.getIndex=function(){return this._index||this.parent&&this.parent.getIndex()||0},d.prototype.fileInfo=function(){return this._fileInfo||this.parent&&this.parent.fileInfo()||{}},d.prototype.isRulesetLike=function(){return!1},d.prototype.toCSS=function(a){var b=[];return this.genCSS(a,{add:function(a,c,d){b.push(a)},isEmpty:function(){return 0===b.length}}),b.join("")},d.prototype.genCSS=function(a,b){b.add(this.value)},d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.eval=function(){return this},d.prototype._operate=function(a,b,c,d){switch(b){case"+":return c+d;case"-":return c-d;case"*":return c*d;case"/":return c/d}},d.prototype.fround=function(a,b){var c=a&&a.numPrecision;return c?Number((b+2e-16).toFixed(c)):b},d.compare=function(a,b){if(a.compare&&"Quoted"!==b.type&&"Anonymous"!==b.type)return a.compare(b);if(b.compare)return-b.compare(a);if(a.type===b.type){if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length===b.length){for(var c=0;c<a.length;c++)if(0!==d.compare(a[c],b[c]))return;return 0}}},d.numericCompare=function(a,b){return a<b?-1:a===b?0:a>b?1:void 0},d.prototype.blocksVisibility=function(){return null==this.visibilityBlocks&&(this.visibilityBlocks=0),0!==this.visibilityBlocks},d.prototype.addVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks+1},d.prototype.removeVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks-1},d.prototype.ensureVisibility=function(){this.nodeVisible=!0},d.prototype.ensureInvisibility=function(){this.nodeVisible=!1},d.prototype.isVisible=function(){return this.nodeVisible},d.prototype.visibilityInfo=function(){return{visibilityBlocks:this.visibilityBlocks,nodeVisible:this.nodeVisible}},d.prototype.copyVisibilityInfo=function(a){a&&(this.visibilityBlocks=a.visibilityBlocks,this.nodeVisible=a.nodeVisible)},b.exports=d},{}],75:[function(a,b,c){var d=a("./node"),e=a("./color"),f=a("./dimension"),g=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};g.prototype=new d,g.prototype.type="Operation",g.prototype.accept=function(a){this.operands=a.visit(this.operands)},g.prototype.eval=function(a){var b=this.operands[0].eval(a),c=this.operands[1].eval(a);if(a.isMathOn()){if(b instanceof f&&c instanceof e&&(b=b.toColor()),c instanceof f&&b instanceof e&&(c=c.toColor()),!b.operate)throw{type:"Operation",message:"Operation on an invalid type"};return b.operate(a,this.op,c)}return new g(this.op,[b,c],this.isSpaced)},g.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" "),this.operands[1].genCSS(a,b)},b.exports=g},{"./color":53,"./dimension":60,"./node":74}],76:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Paren",e.prototype.genCSS=function(a,b){b.add("("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){return new e(this.value.eval(a))},b.exports=e},{"./node":74}],77:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=function(a,b,c){this.name=a,this._index=b,this._fileInfo=c};f.prototype=new d,f.prototype.type="Property",f.prototype.eval=function(a){var b,c=this.name,d=a.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;if(this.evaluating)throw{type:"Name",message:"Recursive property reference for "+c,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,b=this.find(a.frames,function(b){var f,g=b.property(c);if(g){for(var h=0;h<g.length;h++)f=g[h],g[h]=new e(f.name,f.value,f.important,f.merge,f.index,f.currentFileInfo,f.inline,f.variable);if(d(g),f=g[g.length-1],f.important){var i=a.importantScope[a.importantScope.length-1];i.important=f.important}return f=f.value.eval(a)}}))return this.evaluating=!1,b;throw{type:"Name",message:"Property '"+c+"' is undefined",filename:this.currentFileInfo.filename,index:this.index}},f.prototype.find=function(a,b){for(var c,d=0;d<a.length;d++)if(c=b.call(a,a[d]))return c;return null},b.exports=f},{"./declaration":58,"./node":74}],78:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=a("./property"),g=function(a,b,c,d,e){this.escaped=null==c||c,this.value=b||"",this.quote=a.charAt(0),this._index=d,this._fileInfo=e,this.variableRegex=/@\{([\w-]+)\}/g,this.propRegex=/\$\{([\w-]+)\}/g};g.prototype=new d,g.prototype.type="Quoted",g.prototype.genCSS=function(a,b){this.escaped||b.add(this.quote,this.fileInfo(),this.getIndex()),b.add(this.value),this.escaped||b.add(this.quote)},g.prototype.containsVariables=function(){return this.value.match(this.variableRegex)},g.prototype.eval=function(a){function b(a,b,c){var d=a;do a=d,d=a.replace(b,c);while(a!==d);return d}var c=this,d=this.value,h=function(b,d){var f=new e("@"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return f instanceof g?f.value:f.toCSS()},i=function(b,d){var e=new f("$"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return e instanceof g?e.value:e.toCSS()};return d=b(d,this.variableRegex,h),d=b(d,this.propRegex,i),new g(this.quote+d+this.quote,d,this.escaped,this.getIndex(),this.fileInfo())},g.prototype.compare=function(a){return"Quoted"!==a.type||this.escaped||a.escaped?a.toCSS&&this.toCSS()===a.toCSS()?0:void 0:d.numericCompare(this.value,a.value)},b.exports=g},{"./node":74,"./property":77,"./variable":86}],79:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=a("./keyword"),g=a("./comment"),h=a("./paren"),i=a("./selector"),j=a("./element"),k=a("./anonymous"),l=a("../contexts"),m=a("../functions/function-registry"),n=a("../functions/default"),o=a("./debug-info"),p=a("../utils"),q=function(a,b,c,d){this.selectors=a,this.rules=b,this._lookups={},this._variables=null,this._properties=null,this.strictImports=c,this.copyVisibilityInfo(d),this.allowRoot=!0,this.setParent(this.selectors,this),this.setParent(this.rules,this)};q.prototype=new d,q.prototype.type="Ruleset",q.prototype.isRuleset=!0,q.prototype.isRulesetLike=function(){return!0},q.prototype.accept=function(a){this.paths?this.paths=a.visitArray(this.paths,!0):this.selectors&&(this.selectors=a.visitArray(this.selectors)),this.rules&&this.rules.length&&(this.rules=a.visitArray(this.rules))},q.prototype.eval=function(a){var b,c,f,g,h,i=!1;if(this.selectors&&(c=this.selectors.length)){for(b=new Array(c),n.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),g=0;g<c;g++){f=this.selectors[g].eval(a);for(var j=0;j<f.elements.length;j++)if(f.elements[j].isVariable){h=!0;break}b[g]=f,f.evaldCondition&&(i=!0)}if(h){var k=new Array(c);for(g=0;g<c;g++)f=b[g],k[g]=f.toCSS(a);this.parse.parseNode(k.join(","),["selectors"],b[0].getIndex(),b[0].fileInfo(),function(a,c){c&&(b=p.flattenArray(c))})}n.reset()}else i=!0;var l,o,r=this.rules?p.copyArray(this.rules):null,s=new q(b,r,this.strictImports,this.visibilityInfo());s.originalRuleset=this,s.root=this.root,s.firstRoot=this.firstRoot,s.allowImports=this.allowImports,this.debugInfo&&(s.debugInfo=this.debugInfo),i||(r.length=0),s.functionRegistry=function(a){for(var b,c=0,d=a.length;c!==d;++c)if(b=a[c].functionRegistry)return b;return m}(a.frames).inherit();var t=a.frames;t.unshift(s);var u=a.selectors;u||(a.selectors=u=[]),u.unshift(this.selectors),(s.root||s.allowImports||!s.strictImports)&&s.evalImports(a);var v=s.rules;for(g=0;l=v[g];g++)l.evalFirst&&(v[g]=l.eval(a));var w=a.mediaBlocks&&a.mediaBlocks.length||0;for(g=0;l=v[g];g++)"MixinCall"===l.type?(r=l.eval(a).filter(function(a){return!(a instanceof e&&a.variable)||!s.variable(a.name)}),v.splice.apply(v,[g,1].concat(r)),g+=r.length-1,s.resetCache()):"VariableCall"===l.type&&(r=l.eval(a).rules.filter(function(a){return!(a instanceof e&&a.variable)}),v.splice.apply(v,[g,1].concat(r)),g+=r.length-1,s.resetCache());for(g=0;l=v[g];g++)l.evalFirst||(v[g]=l=l.eval?l.eval(a):l);for(g=0;l=v[g];g++)if(l instanceof q&&l.selectors&&1===l.selectors.length&&l.selectors[0]&&l.selectors[0].isJustParentSelector()){v.splice(g--,1);for(var j=0;o=l.rules[j];j++)o instanceof d&&(o.copyVisibilityInfo(l.visibilityInfo()),o instanceof e&&o.variable||v.splice(++g,0,o))}if(t.shift(),u.shift(),a.mediaBlocks)for(g=w;g<a.mediaBlocks.length;g++)a.mediaBlocks[g].bubbleSelectors(b);return s},q.prototype.evalImports=function(a){var b,c,d=this.rules;if(d)for(b=0;b<d.length;b++)"Import"===d[b].type&&(c=d[b].eval(a),c&&(c.length||0===c.length)?(d.splice.apply(d,[b,1].concat(c)),b+=c.length-1):d.splice(b,1,c),this.resetCache())},q.prototype.makeImportant=function(){var a=new q(this.selectors,this.rules.map(function(a){return a.makeImportant?a.makeImportant():a}),this.strictImports,this.visibilityInfo());return a},q.prototype.matchArgs=function(a){return!a||0===a.length},q.prototype.matchCondition=function(a,b){var c=this.selectors[this.selectors.length-1];return!!c.evaldCondition&&!(c.condition&&!c.condition.eval(new l.Eval(b,b.frames)))},q.prototype.resetCache=function(){this._rulesets=null,this._variables=null,this._properties=null,this._lookups={}},q.prototype.variables=function(){return this._variables||(this._variables=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable===!0&&(a[b.name]=b),"Import"===b.type&&b.root&&b.root.variables){var c=b.root.variables();for(var d in c)c.hasOwnProperty(d)&&(a[d]=b.root.variable(d))}return a},{}):{}),this._variables},q.prototype.properties=function(){return this._properties||(this._properties=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable!==!0){var c=1===b.name.length&&b.name[0]instanceof f?b.name[0].value:b.name;a["$"+c]?a["$"+c].push(b):a["$"+c]=[b]}return a},{}):{}),this._properties},q.prototype.variable=function(a){var b=this.variables()[a];if(b)return this.parseValue(b)},q.prototype.property=function(a){var b=this.properties()[a];if(b)return this.parseValue(b)},q.prototype.lastDeclaration=function(){for(var a=this.rules.length;a>0;a--){var b=this.rules[a-1];if(b instanceof e)return this.parseValue(b)}},q.prototype.parseValue=function(a){function b(a){return a.value instanceof k&&!a.parsed?("string"==typeof a.value.value?this.parse.parseNode(a.value.value,["value","important"],a.value.getIndex(),a.fileInfo(),function(b,c){b&&(a.parsed=!0),c&&(a.value=c[0],a.important=c[1]||"",a.parsed=!0)}):a.parsed=!0,a):a}var c=this;if(Array.isArray(a)){var d=[];return a.forEach(function(a){d.push(b.call(c,a))}),d}return b.call(c,a)},q.prototype.rulesets=function(){if(!this.rules)return[];var a,b,c=[],d=this.rules;for(a=0;b=d[a];a++)b.isRuleset&&c.push(b);return c},q.prototype.prependRule=function(a){var b=this.rules;b?b.unshift(a):this.rules=[a],this.setParent(a,this)},q.prototype.find=function(a,b,c){b=b||this;var d,e,f=[],g=a.toCSS();return g in this._lookups?this._lookups[g]:(this.rulesets().forEach(function(g){if(g!==b)for(var h=0;h<g.selectors.length;h++)if(d=a.match(g.selectors[h])){if(a.elements.length>d){if(!c||c(g)){e=g.find(new i(a.elements.slice(d)),b,c);for(var j=0;j<e.length;++j)e[j].path.push(g);Array.prototype.push.apply(f,e)}}else f.push({rule:g,path:[]});break}}),this._lookups[g]=f,f)},q.prototype.genCSS=function(a,b){var c,d,e,f,h,i=[],j=[];a.tabLevel=a.tabLevel||0,this.root||a.tabLevel++;var k,l=a.compress?"":Array(a.tabLevel+1).join("  "),m=a.compress?"":Array(a.tabLevel).join("  "),n=0,p=0;for(c=0;f=this.rules[c];c++)f instanceof g?(p===c&&p++,j.push(f)):f.isCharset&&f.isCharset()?(j.splice(n,0,f),n++,p++):"Import"===f.type?(j.splice(p,0,f),p++):j.push(f);if(j=i.concat(j),!this.root){e=o(a,this,m),e&&(b.add(e),b.add(m));var q,r=this.paths,s=r.length;for(k=a.compress?",":",\n"+m,c=0;c<s;c++)if(h=r[c],q=h.length)for(c>0&&b.add(k),a.firstSelector=!0,h[0].genCSS(a,b),a.firstSelector=!1,d=1;d<q;d++)h[d].genCSS(a,b);b.add((a.compress?"{":" {\n")+l)}for(c=0;f=j[c];c++){c+1===j.length&&(a.lastRule=!0);var t=a.lastRule;f.isRulesetLike(f)&&(a.lastRule=!1),f.genCSS?f.genCSS(a,b):f.value&&b.add(f.value.toString()),a.lastRule=t,!a.lastRule&&f.isVisible()?b.add(a.compress?"":"\n"+l):a.lastRule=!1}this.root||(b.add(a.compress?"}":"\n"+m+"}"),a.tabLevel--),b.isEmpty()||a.compress||!this.firstRoot||b.add("\n")},q.prototype.joinSelectors=function(a,b,c){for(var d=0;d<c.length;d++)this.joinSelector(a,b,c[d])},q.prototype.joinSelector=function(a,b,c){function d(a,b){var c,d;if(0===a.length)c=new h(a[0]);else{var e=new Array(a.length);for(d=0;d<a.length;d++)e[d]=new j(null,a[d],b.isVariable,b._index,b._fileInfo);c=new h(new i(e))}return c}function e(a,b){var c,d;return c=new j(null,a,b.isVariable,b._index,b._fileInfo),
-d=new i([c])}function f(a,b,c,d){var e,f,g;if(e=[],a.length>0?(e=p.copyArray(a),f=e.pop(),g=d.createDerived(p.copyArray(f.elements))):g=d.createDerived([]),b.length>0){var h=c.combinator,i=b[0].elements[0];h.emptyOrWhitespace&&!i.combinator.emptyOrWhitespace&&(h=i.combinator),g.elements.push(new j(h,i.value,c.isVariable,c._index,c._fileInfo)),g.elements=g.elements.concat(b[0].elements.slice(1))}if(0!==g.elements.length&&e.push(g),b.length>1){var k=b.slice(1);k=k.map(function(a){return a.createDerived(a.elements,[])}),e=e.concat(k)}return e}function g(a,b,c,d,e){var g;for(g=0;g<a.length;g++){var h=f(a[g],b,c,d);e.push(h)}return e}function k(a,b){var c,d;if(0!==a.length){if(0===b.length)return void b.push([new i(a)]);for(c=0;d=b[c];c++)d.length>0?d[d.length-1]=d[d.length-1].createDerived(d[d.length-1].elements.concat(a)):d.push(new i(a))}}function l(a,b,c){function m(a){var b;return a.value instanceof h?(b=a.value.value,b instanceof i?b:null):null}var n,o,p,q,r,s,t,u,v,w,x=!1;for(q=[],r=[[]],n=0;u=c.elements[n];n++)if("&"!==u.value){var y=m(u);if(null!=y){k(q,r);var z,A=[],B=[];for(z=l(A,b,y),x=x||z,p=0;p<A.length;p++){var C=e(d(A[p],u),u);g(r,[C],u,c,B)}r=B,q=[]}else q.push(u)}else{for(x=!0,s=[],k(q,r),o=0;o<r.length;o++)if(t=r[o],0===b.length)t.length>0&&t[0].elements.push(new j(u.combinator,"",u.isVariable,u._index,u._fileInfo)),s.push(t);else for(p=0;p<b.length;p++){var D=f(t,b[p],u,c);s.push(D)}r=s,q=[]}for(k(q,r),n=0;n<r.length;n++)v=r[n].length,v>0&&(a.push(r[n]),w=r[n][v-1],r[n][v-1]=w.createDerived(w.elements,c.extendList));return x}function m(a,b){var c=b.createDerived(b.elements,b.extendList,b.evaldCondition);return c.copyVisibilityInfo(a),c}var n,o,q;if(o=[],q=l(o,b,c),!q)if(b.length>0)for(o=[],n=0;n<b.length;n++){var r=b[n].map(m.bind(this,c.visibilityInfo()));r.push(c),o.push(r)}else o=[[c]];for(n=0;n<o.length;n++)a.push(o[n])},b.exports=q},{"../contexts":12,"../functions/default":24,"../functions/function-registry":26,"../utils":87,"./anonymous":48,"./comment":55,"./debug-info":57,"./declaration":58,"./element":61,"./keyword":68,"./node":74,"./paren":76,"./selector":80}],80:[function(a,b,c){var d=a("./node"),e=a("./element"),f=a("../less-error"),g=function(a,b,c,d,e,f){this.extendList=b,this.condition=c,this.evaldCondition=!c,this._index=d,this._fileInfo=e,this.elements=this.getElements(a),this.mixinElements_=void 0,this.copyVisibilityInfo(f),this.setParent(this.elements,this)};g.prototype=new d,g.prototype.type="Selector",g.prototype.accept=function(a){this.elements&&(this.elements=a.visitArray(this.elements)),this.extendList&&(this.extendList=a.visitArray(this.extendList)),this.condition&&(this.condition=a.visit(this.condition))},g.prototype.createDerived=function(a,b,c){a=this.getElements(a);var d=new g(a,b||this.extendList,null,this.getIndex(),this.fileInfo(),this.visibilityInfo());return d.evaldCondition=null!=c?c:this.evaldCondition,d.mediaEmpty=this.mediaEmpty,d},g.prototype.getElements=function(a){return a?("string"==typeof a&&this.parse.parseNode(a,["selector"],this._index,this._fileInfo,function(b,c){if(b)throw new f({index:b.index,message:b.message},this.parse.imports,this._fileInfo.filename);a=c[0].elements}),a):[new e("","&",(!1),this._index,this._fileInfo)]},g.prototype.createEmptySelectors=function(){var a=new e("","&",(!1),this._index,this._fileInfo),b=[new g([a],null,null,this._index,this._fileInfo)];return b[0].mediaEmpty=!0,b},g.prototype.match=function(a){var b,c,d=this.elements,e=d.length;if(a=a.mixinElements(),b=a.length,0===b||e<b)return 0;for(c=0;c<b;c++)if(d[c].value!==a[c])return 0;return b},g.prototype.mixinElements=function(){if(this.mixinElements_)return this.mixinElements_;var a=this.elements.map(function(a){return a.combinator.value+(a.value.value||a.value)}).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);return a?"&"===a[0]&&a.shift():a=[],this.mixinElements_=a},g.prototype.isJustParentSelector=function(){return!this.mediaEmpty&&1===this.elements.length&&"&"===this.elements[0].value&&(" "===this.elements[0].combinator.value||""===this.elements[0].combinator.value)},g.prototype.eval=function(a){var b=this.condition&&this.condition.eval(a),c=this.elements,d=this.extendList;return c=c&&c.map(function(b){return b.eval(a)}),d=d&&d.map(function(b){return b.eval(a)}),this.createDerived(c,d,b)},g.prototype.genCSS=function(a,b){var c,d;for(a&&a.firstSelector||""!==this.elements[0].combinator.value||b.add(" ",this.fileInfo(),this.getIndex()),c=0;c<this.elements.length;c++)d=this.elements[c],d.genCSS(a,b)},g.prototype.getIsOutput=function(){return this.evaldCondition},b.exports=g},{"../less-error":36,"./element":61,"./node":74}],81:[function(a,b,c){var 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a(a){var b=q.i,c=q.$re(a);if(c)return g.push(b),f.push(c[1])}var b,d,f=[],g=[];q.save();var h=q.$re(/^([_a-zA-Z0-9-]+)\s*:/);if(h)return f=[new e.Keyword(h[1])],q.forget(),f;for(a(/^(\*?)/);;)if(!a(/^((?:[\w-]+)|(?:[@\$]\{[\w-]+\}))/))break;if(f.length>1&&a(/^((?:\+_|\+)?)\s*:/)){for(q.forget(),""===f[0]&&(f.shift(),g.shift()),d=0;d<f.length;d++)b=f[d],f[d]="@"!==b.charAt(0)&&"$"!==b.charAt(0)?new e.Keyword(b):"@"===b.charAt(0)?new e.Variable("@"+b.slice(2,-1),g[d],c):new e.Property("$"+b.slice(2,-1),g[d],c);return f}q.restore()}}}};j.serializeVars=function(a){var b="";for(var c in a)if(Object.hasOwnProperty.call(a,c)){var d=a[c];b+=("@"===c[0]?"":"@")+c+": "+d+(";"===String(d).slice(-1)?"":";")}return b},b.exports=j},{"../functions/function-registry":26,"../less-error":37,"../tree":67,"../utils":89,"../visitors":93,"./parser-input":43}],45:[function(a,b,c){var d,e=function(a){this.less=a,this.visitors=[],this.preProcessors=[],this.postProcessors=[],this.installedPlugins=[],this.fileManagers=[],this.iterator=-1,this.pluginCache={},this.Loader=new a.PluginLoader(a)},f=function(a,b){return!b&&d||(d=new e(a)),d};e.prototype.addPlugins=function(a){if(a)for(var b=0;b<a.length;b++)this.addPlugin(a[b])},e.prototype.addPlugin=function(a,b,c){this.installedPlugins.push(a),b&&(this.pluginCache[b]=a),a.install&&a.install(this.less,this,c||this.less.functions.functionRegistry)},e.prototype.get=function(a){return this.pluginCache[a]},e.prototype.addVisitor=function(a){this.visitors.push(a)},e.prototype.addPreProcessor=function(a,b){var c;for(c=0;c<this.preProcessors.length&&!(this.preProcessors[c].priority>=b);c++);this.preProcessors.splice(c,0,{preProcessor:a,priority:b})},e.prototype.addPostProcessor=function(a,b){var c;for(c=0;c<this.postProcessors.length&&!(this.postProcessors[c].priority>=b);c++);this.postProcessors.splice(c,0,{postProcessor:a,priority:b})},e.prototype.addFileManager=function(a){this.fileManagers.push(a)},e.prototype.getPreProcessors=function(){for(var a=[],b=0;b<this.preProcessors.length;b++)a.push(this.preProcessors[b].preProcessor);return a},e.prototype.getPostProcessors=function(){for(var a=[],b=0;b<this.postProcessors.length;b++)a.push(this.postProcessors[b].postProcessor);return a},e.prototype.getVisitors=function(){return this.visitors},e.prototype.visitor=function(){var a=this;return{first:function(){return a.iterator=-1,a.visitors[a.iterator]},get:function(){return a.iterator+=1,a.visitors[a.iterator]}}},e.prototype.getFileManagers=function(){return this.fileManagers},b.exports=f},{}],46:[function(a,b,c){var d,e=a("./utils");b.exports=function(b,c,f){var g=function(b,f,h){if("function"==typeof f?(h=f,f=e.copyOptions(this.options,{})):f=e.copyOptions(this.options,f||{}),!h){d||(d="undefined"==typeof Promise?a("promise"):Promise);var i=this;return new d(function(a,c){g.call(i,b,f,function(b,d){b?c(b):a(d)})})}this.parse(b,f,function(a,b,d,e){if(a)return h(a);var f;try{var g=new c(b,d);f=g.toCSS(e)}catch(a){return h(a)}h(null,f)})};return g}},{"./utils":89,promise:void 0}],47:[function(a,b,c){b.exports=function(a,b){var c=function(a){this.options=a};return c.prototype.toCSS=function(b,c,d){var e=new a({contentsIgnoredCharsMap:d.contentsIgnoredChars,rootNode:b,contentsMap:d.contents,sourceMapFilename:this.options.sourceMapFilename,sourceMapURL:this.options.sourceMapURL,outputFilename:this.options.sourceMapOutputFilename,sourceMapBasepath:this.options.sourceMapBasepath,sourceMapRootpath:this.options.sourceMapRootpath,outputSourceFiles:this.options.outputSourceFiles,sourceMapGenerator:this.options.sourceMapGenerator,sourceMapFileInline:this.options.sourceMapFileInline}),f=e.toCSS(c);return this.sourceMap=e.sourceMap,this.sourceMapURL=e.sourceMapURL,this.options.sourceMapInputFilename&&(this.sourceMapInputFilename=e.normalizeFilename(this.options.sourceMapInputFilename)),void 0!==this.options.sourceMapBasepath&&void 0!==this.sourceMapURL&&(this.sourceMapURL=e.removeBasepath(this.sourceMapURL)),f+this.getCSSAppendage()},c.prototype.getCSSAppendage=function(){var a=this.sourceMapURL;if(this.options.sourceMapFileInline){if(void 0===this.sourceMap)return"";a="data:application/json;base64,"+b.encodeBase64(this.sourceMap)}return a?"/*# sourceMappingURL="+a+" */":""},c.prototype.getExternalSourceMap=function(){return this.sourceMap},c.prototype.setExternalSourceMap=function(a){this.sourceMap=a},c.prototype.isInline=function(){return this.options.sourceMapFileInline},c.prototype.getSourceMapURL=function(){return this.sourceMapURL},c.prototype.getOutputFilename=function(){return this.options.sourceMapOutputFilename},c.prototype.getInputFilename=function(){return this.sourceMapInputFilename},c}},{}],48:[function(a,b,c){b.exports=function(a){var b=function(b){this._css=[],this._rootNode=b.rootNode,this._contentsMap=b.contentsMap,this._contentsIgnoredCharsMap=b.contentsIgnoredCharsMap,b.sourceMapFilename&&(this._sourceMapFilename=b.sourceMapFilename.replace(/\\/g,"/")),this._outputFilename=b.outputFilename,this.sourceMapURL=b.sourceMapURL,b.sourceMapBasepath&&(this._sourceMapBasepath=b.sourceMapBasepath.replace(/\\/g,"/")),b.sourceMapRootpath?(this._sourceMapRootpath=b.sourceMapRootpath.replace(/\\/g,"/"),"/"!==this._sourceMapRootpath.charAt(this._sourceMapRootpath.length-1)&&(this._sourceMapRootpath+="/")):this._sourceMapRootpath="",this._outputSourceFiles=b.outputSourceFiles,this._sourceMapGeneratorConstructor=a.getSourceMapGenerator(),this._lineNumber=0,this._column=0};return b.prototype.removeBasepath=function(a){return this._sourceMapBasepath&&0===a.indexOf(this._sourceMapBasepath)&&(a=a.substring(this._sourceMapBasepath.length),"\\"!==a.charAt(0)&&"/"!==a.charAt(0)||(a=a.substring(1))),a},b.prototype.normalizeFilename=function(a){return a=a.replace(/\\/g,"/"),a=this.removeBasepath(a),(this._sourceMapRootpath||"")+a},b.prototype.add=function(a,b,c,d){if(a){var e,f,g,h,i;if(b){var j=this._contentsMap[b.filename];this._contentsIgnoredCharsMap[b.filename]&&(c-=this._contentsIgnoredCharsMap[b.filename],c<0&&(c=0),j=j.slice(this._contentsIgnoredCharsMap[b.filename])),j=j.substring(0,c),f=j.split("\n"),h=f[f.length-1]}if(e=a.split("\n"),g=e[e.length-1],b)if(d)for(i=0;i<e.length;i++)this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+i+1,column:0===i?this._column:0},original:{line:f.length+i,column:0===i?h.length:0},source:this.normalizeFilename(b.filename)});else this._sourceMapGenerator.addMapping({generated:{line:this._lineNumber+1,column:this._column},original:{line:f.length,column:h.length},source:this.normalizeFilename(b.filename)});1===e.length?this._column+=g.length:(this._lineNumber+=e.length-1,this._column=g.length),this._css.push(a)}},b.prototype.isEmpty=function(){return 0===this._css.length},b.prototype.toCSS=function(a){if(this._sourceMapGenerator=new this._sourceMapGeneratorConstructor({file:this._outputFilename,sourceRoot:null}),this._outputSourceFiles)for(var b in this._contentsMap)if(this._contentsMap.hasOwnProperty(b)){var c=this._contentsMap[b];this._contentsIgnoredCharsMap[b]&&(c=c.slice(this._contentsIgnoredCharsMap[b])),this._sourceMapGenerator.setSourceContent(this.normalizeFilename(b),c)}if(this._rootNode.genCSS(a,this),this._css.length>0){var d,e=JSON.stringify(this._sourceMapGenerator.toJSON());this.sourceMapURL?d=this.sourceMapURL:this._sourceMapFilename&&(d=this._sourceMapFilename),this.sourceMapURL=d,this.sourceMap=e}return this._css.join("")},b}},{}],49:[function(a,b,c){var d=a("./contexts"),e=a("./visitors"),f=a("./tree");b.exports=function(a,b){b=b||{};var c,g=b.variables,h=new d.Eval(b);"object"!=typeof g||Array.isArray(g)||(g=Object.keys(g).map(function(a){var b=g[a];return b instanceof f.Value||(b instanceof f.Expression||(b=new f.Expression([b])),b=new f.Value([b])),new f.Declaration("@"+a,b,(!1),null,0)}),h.frames=[new f.Ruleset(null,g)]);var i,j,k=[new e.JoinSelectorVisitor,new e.MarkVisibleSelectorsVisitor((!0)),new e.ExtendVisitor,new e.ToCSSVisitor({compress:Boolean(b.compress)})],l=[];if(b.pluginManager){j=b.pluginManager.visitor();for(var m=0;m<2;m++)for(j.first();i=j.get();)i.isPreEvalVisitor?0!==m&&l.indexOf(i)!==-1||(l.push(i),i.run(a)):0!==m&&k.indexOf(i)!==-1||(i.isPreVisitor?k.unshift(i):k.push(i))}c=a.eval(h);for(var m=0;m<k.length;m++)k[m].run(c);if(b.pluginManager)for(j.first();i=j.get();)k.indexOf(i)===-1&&l.indexOf(i)===-1&&i.run(c);return c}},{"./contexts":12,"./tree":67,"./visitors":93}],50:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e,f){this.value=a,this._index=b,this._fileInfo=c,this.mapLines=d,this.rulesetLike="undefined"!=typeof e&&e,this.allowRoot=!0,this.copyVisibilityInfo(f)};e.prototype=new d,e.prototype.type="Anonymous",e.prototype.eval=function(){return new e(this.value,this._index,this._fileInfo,this.mapLines,this.rulesetLike,this.visibilityInfo())},e.prototype.compare=function(a){return a.toCSS&&this.toCSS()===a.toCSS()?0:void 0},e.prototype.isRulesetLike=function(){return this.rulesetLike},e.prototype.genCSS=function(a,b){this.nodeVisible=Boolean(this.value),this.nodeVisible&&b.add(this.value,this._fileInfo,this._index,this.mapLines)},b.exports=e},{"./node":76}],51:[function(a,b,c){var d=a("./node"),e=function(a,b){this.key=a,this.value=b};e.prototype=new d,e.prototype.type="Assignment",e.prototype.accept=function(a){this.value=a.visit(this.value)},e.prototype.eval=function(a){return this.value.eval?new e(this.key,this.value.eval(a)):this},e.prototype.genCSS=function(a,b){b.add(this.key+"="),this.value.genCSS?this.value.genCSS(a,b):b.add(this.value)},b.exports=e},{"./node":76}],52:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./ruleset"),g=a("./anonymous"),h=function(a,b,c,f,h,i,j,k){var l;if(this.name=a,this.value=b instanceof d?b:b?new g(b):b,c){for(Array.isArray(c)?this.rules=c:(this.rules=[c],this.rules[0].selectors=new e([],null,null,f,h).createEmptySelectors()),l=0;l<this.rules.length;l++)this.rules[l].allowImports=!0;this.setParent(this.rules,this)}this._index=f,this._fileInfo=h,this.debugInfo=i,this.isRooted=j||!1,this.copyVisibilityInfo(k),this.allowRoot=!0};h.prototype=new d,h.prototype.type="AtRule",h.prototype.accept=function(a){var b=this.value,c=this.rules;c&&(this.rules=a.visitArray(c)),b&&(this.value=a.visit(b))},h.prototype.isRulesetLike=function(){return this.rules||!this.isCharset()},h.prototype.isCharset=function(){return"@charset"===this.name},h.prototype.genCSS=function(a,b){var c=this.value,d=this.rules;b.add(this.name,this.fileInfo(),this.getIndex()),c&&(b.add(" "),c.genCSS(a,b)),d?this.outputRuleset(a,b,d):b.add(";")},h.prototype.eval=function(a){var b,c,d=this.value,e=this.rules;return b=a.mediaPath,c=a.mediaBlocks,a.mediaPath=[],a.mediaBlocks=[],d&&(d=d.eval(a)),e&&(e=[e[0].eval(a)],e[0].root=!0),a.mediaPath=b,a.mediaBlocks=c,new h(this.name,d,e,this.getIndex(),this.fileInfo(),this.debugInfo,this.isRooted,this.visibilityInfo())},h.prototype.variable=function(a){if(this.rules)return f.prototype.variable.call(this.rules[0],a)},h.prototype.find=function(){if(this.rules)return f.prototype.find.apply(this.rules[0],arguments)},h.prototype.rulesets=function(){if(this.rules)return f.prototype.rulesets.apply(this.rules[0])},h.prototype.outputRuleset=function(a,b,c){var d,e=c.length;if(a.tabLevel=(0|a.tabLevel)+1,a.compress){for(b.add("{"),d=0;d<e;d++)c[d].genCSS(a,b);return b.add("}"),void a.tabLevel--}var f="\n"+Array(a.tabLevel).join("  "),g=f+"  ";if(e){for(b.add(" {"+g),c[0].genCSS(a,b),d=1;d<e;d++)b.add(g),c[d].genCSS(a,b);b.add(f+"}")}else b.add(" {"+f+"}");a.tabLevel--},b.exports=h},{"./anonymous":50,"./node":76,"./ruleset":81,"./selector":82}],53:[function(a,b,c){var d=a("./node"),e=function(a,b,c){this.key=a,this.op=b,this.value=c};e.prototype=new d,e.prototype.type="Attribute",e.prototype.eval=function(a){return new e(this.key.eval?this.key.eval(a):this.key,this.op,this.value&&this.value.eval?this.value.eval(a):this.value)},e.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},e.prototype.toCSS=function(a){var b=this.key.toCSS?this.key.toCSS(a):this.key;return this.op&&(b+=this.op,b+=this.value.toCSS?this.value.toCSS(a):this.value),"["+b+"]"},b.exports=e},{"./node":76}],54:[function(a,b,c){var d=a("./node"),e=a("./anonymous"),f=a("../functions/function-caller"),g=function(a,b,c,d){this.name=a,this.args=b,this.calc="calc"===a,this._index=c,this._fileInfo=d};g.prototype=new d,g.prototype.type="Call",g.prototype.accept=function(a){this.args&&(this.args=a.visitArray(this.args))},g.prototype.eval=function(a){var b=a.mathOn;a.mathOn=!this.calc,(this.calc||a.inCalc)&&a.enterCalc();var c=this.args.map(function(b){return b.eval(a)});(this.calc||a.inCalc)&&a.exitCalc(),a.mathOn=b;var h,i=new f(this.name,a,this.getIndex(),this.fileInfo());if(i.isValid()){try{h=i.call(c)}catch(j){throw{type:j.type||"Runtime",message:"error evaluating function `"+this.name+"`"+(j.message?": "+j.message:""),index:this.getIndex(),filename:this.fileInfo().filename,line:j.lineNumber,column:j.columnNumber}}if(null!==h&&void 0!==h)return h instanceof d||(h=new e(h&&h!==!0?h.toString():null)),h._index=this._index,h._fileInfo=this._fileInfo,h}return new g(this.name,c,this.getIndex(),this.fileInfo())},g.prototype.genCSS=function(a,b){b.add(this.name+"(",this.fileInfo(),this.getIndex());for(var c=0;c<this.args.length;c++)this.args[c].genCSS(a,b),c+1<this.args.length&&b.add(", ");b.add(")")},b.exports=g},{"../functions/function-caller":25,"./anonymous":50,"./node":76}],55:[function(a,b,c){function d(a,b){return Math.min(Math.max(a,0),b)}function e(a){return"#"+a.map(function(a){return a=d(Math.round(a),255),(a<16?"0":"")+a.toString(16)}).join("")}var f=a("./node"),g=a("../data/colors"),h=function(a,b,c){this.rgb=Array.isArray(a)?a:6==a.length?a.match(/.{2}/g).map(function(a){return parseInt(a,16)}):a.split("").map(function(a){return parseInt(a+a,16)}),this.alpha="number"==typeof b?b:1,"undefined"!=typeof c&&(this.value=c)};h.prototype=new f,h.prototype.type="Color",h.prototype.luma=function(){var a=this.rgb[0]/255,b=this.rgb[1]/255,c=this.rgb[2]/255;return a=a<=.03928?a/12.92:Math.pow((a+.055)/1.055,2.4),b=b<=.03928?b/12.92:Math.pow((b+.055)/1.055,2.4),c=c<=.03928?c/12.92:Math.pow((c+.055)/1.055,2.4),.2126*a+.7152*b+.0722*c},h.prototype.genCSS=function(a,b){b.add(this.toCSS(a))},h.prototype.toCSS=function(a,b){var c,e,f=a&&a.compress&&!b;if(this.value)return this.value;if(e=this.fround(a,this.alpha),e<1)return"rgba("+this.rgb.map(function(a){return d(Math.round(a),255)}).concat(d(e,1)).join(","+(f?"":" "))+")";if(c=this.toRGB(),f){var g=c.split("");g[1]===g[2]&&g[3]===g[4]&&g[5]===g[6]&&(c="#"+g[1]+g[3]+g[5])}return c},h.prototype.operate=function(a,b,c){for(var d=new Array(3),e=this.alpha*(1-c.alpha)+c.alpha,f=0;f<3;f++)d[f]=this._operate(a,b,this.rgb[f],c.rgb[f]);return new h(d,e)},h.prototype.toRGB=function(){return e(this.rgb)},h.prototype.toHSL=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=(g+h)/2,j=g-h;if(g===h)a=b=0;else{switch(b=i>.5?j/(2-g-h):j/(g+h),g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,l:i,a:f}},h.prototype.toHSV=function(){var a,b,c=this.rgb[0]/255,d=this.rgb[1]/255,e=this.rgb[2]/255,f=this.alpha,g=Math.max(c,d,e),h=Math.min(c,d,e),i=g,j=g-h;if(b=0===g?0:j/g,g===h)a=0;else{switch(g){case c:a=(d-e)/j+(d<e?6:0);break;case d:a=(e-c)/j+2;break;case e:a=(c-d)/j+4}a/=6}return{h:360*a,s:b,v:i,a:f}},h.prototype.toARGB=function(){return e([255*this.alpha].concat(this.rgb))},h.prototype.compare=function(a){return a.rgb&&a.rgb[0]===this.rgb[0]&&a.rgb[1]===this.rgb[1]&&a.rgb[2]===this.rgb[2]&&a.alpha===this.alpha?0:void 0},h.fromKeyword=function(a){var b,c=a.toLowerCase();if(g.hasOwnProperty(c)?b=new h(g[c].slice(1)):"transparent"===c&&(b=new h([0,0,0],0)),b)return b.value=a,b},b.exports=h},{"../data/colors":13,"./node":76}],56:[function(a,b,c){var d=a("./node"),e=function(a){" "===a?(this.value=" ",this.emptyOrWhitespace=!0):(this.value=a?a.trim():"",this.emptyOrWhitespace=""===this.value)};e.prototype=new d,e.prototype.type="Combinator";var f={"":!0," ":!0,"|":!0};e.prototype.genCSS=function(a,b){var c=a.compress||f[this.value]?"":" ";b.add(c+this.value+c)},b.exports=e},{"./node":76}],57:[function(a,b,c){var d=a("./node"),e=a("./debug-info"),f=function(a,b,c,d){this.value=a,this.isLineComment=b,this._index=c,this._fileInfo=d,this.allowRoot=!0};f.prototype=new d,f.prototype.type="Comment",f.prototype.genCSS=function(a,b){this.debugInfo&&b.add(e(a,this),this.fileInfo(),this.getIndex()),b.add(this.value)},f.prototype.isSilent=function(a){var b=a.compress&&"!"!==this.value[2];return this.isLineComment||b},b.exports=f},{"./debug-info":59,"./node":76}],58:[function(a,b,c){var d=a("./node"),e=function(a,b,c,d,e){this.op=a.trim(),this.lvalue=b,this.rvalue=c,this._index=d,this.negate=e};e.prototype=new d,e.prototype.type="Condition",e.prototype.accept=function(a){this.lvalue=a.visit(this.lvalue),this.rvalue=a.visit(this.rvalue)},e.prototype.eval=function(a){var b=function(a,b,c){switch(a){case"and":return b&&c;case"or":return b||c;default:switch(d.compare(b,c)){case-1:return"<"===a||"=<"===a||"<="===a;case 0:return"="===a||">="===a||"=<"===a||"<="===a;case 1:return">"===a||">="===a;default:return!1}}}(this.op,this.lvalue.eval(a),this.rvalue.eval(a));return this.negate?!b:b},b.exports=e},{"./node":76}],59:[function(a,b,c){var d=function(a,b,c){var e="";if(a.dumpLineNumbers&&!a.compress)switch(a.dumpLineNumbers){case"comments":e=d.asComment(b);break;case"mediaquery":e=d.asMediaQuery(b);break;case"all":e=d.asComment(b)+(c||"")+d.asMediaQuery(b)}return e};d.asComment=function(a){return"/* line "+a.debugInfo.lineNumber+", "+a.debugInfo.fileName+" */\n"},d.asMediaQuery=function(a){var b=a.debugInfo.fileName;return/^[a-z]+:\/\//i.test(b)||(b="file://"+b),"@media -sass-debug-info{filename{font-family:"+b.replace(/([.:\/\\])/g,function(a){return"\\"==a&&(a="/"),"\\"+a})+"}line{font-family:\\00003"+a.debugInfo.lineNumber+"}}\n"},b.exports=d},{}],60:[function(a,b,c){function d(a,b){var c,d="",e=b.length,f={add:function(a){d+=a}};for(c=0;c<e;c++)b[c].eval(a).genCSS(a,f);return d}var e=a("./node"),f=a("./value"),g=a("./keyword"),h=a("./anonymous"),i=a("../math-constants"),j=function(a,b,c,d,g,i,j,k){this.name=a,this.value=b instanceof e?b:new f([b?new h(b):null]),this.important=c?" 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g(this.combinator,this.value.eval?this.value.eval(a):this.value,this.isVariable,this.getIndex(),this.fileInfo(),this.visibilityInfo())},g.prototype.clone=function(){return new g(this.combinator,this.value,this.isVariable,this.getIndex(),this.fileInfo(),this.visibilityInfo())},g.prototype.genCSS=function(a,b){b.add(this.toCSS(a),this.fileInfo(),this.getIndex())},g.prototype.toCSS=function(a){a=a||{};var b=this.value,c=a.firstSelector;return b instanceof e&&(a.firstSelector=!0),b=b.toCSS?b.toCSS(a):b,a.firstSelector=c,""===b&&"&"===this.combinator.value.charAt(0)?"":this.combinator.toCSS(a)+b},b.exports=g},{"./combinator":56,"./node":76,"./paren":78}],64:[function(a,b,c){var d=a("./node"),e=a("./paren"),f=a("./comment"),g=a("./dimension"),h=a("../math-constants"),i=function(a,b){if(this.value=a,this.noSpacing=b,!a)throw new Error("Expression requires an array parameter")};i.prototype=new d,i.prototype.type="Expression",i.prototype.accept=function(a){this.value=a.visitArray(this.value)},i.prototype.eval=function(a){var b,c=a.isMathOn(),d=this.parens&&(a.math!==h.STRICT_LEGACY||!this.parensInOp),f=!1;return d&&a.inParenthesis(),this.value.length>1?b=new i(this.value.map(function(b){return b.eval?b.eval(a):b}),this.noSpacing):1===this.value.length?(!this.value[0].parens||this.value[0].parensInOp||a.inCalc||(f=!0),b=this.value[0].eval(a)):b=this,d&&a.outOfParenthesis(),!this.parens||!this.parensInOp||c||f||b instanceof g||(b=new e(b)),b},i.prototype.genCSS=function(a,b){for(var c=0;c<this.value.length;c++)this.value[c].genCSS(a,b),!this.noSpacing&&c+1<this.value.length&&b.add(" ")},i.prototype.throwAwayComments=function(){this.value=this.value.filter(function(a){return!(a instanceof f)})},b.exports=i},{"../math-constants":39,"./comment":57,"./dimension":62,"./node":76,"./paren":78}],65:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=function g(a,b,c,d,e){switch(this.selector=a,this.option=b,this.object_id=g.next_id++,this.parent_ids=[this.object_id],this._index=c,this._fileInfo=d,this.copyVisibilityInfo(e),this.allowRoot=!0,b){case"all":this.allowBefore=!0,this.allowAfter=!0;break;default:this.allowBefore=!1,this.allowAfter=!1}this.setParent(this.selector,this)};f.next_id=0,f.prototype=new d,f.prototype.type="Extend",f.prototype.accept=function(a){this.selector=a.visit(this.selector)},f.prototype.eval=function(a){return new f(this.selector.eval(a),this.option,this.getIndex(),this.fileInfo(),this.visibilityInfo())},f.prototype.clone=function(a){return new f(this.selector,this.option,this.getIndex(),this.fileInfo(),this.visibilityInfo())},f.prototype.findSelfSelectors=function(a){var b,c,d=[];for(b=0;b<a.length;b++)c=a[b].elements,b>0&&c.length&&""===c[0].combinator.value&&(c[0].combinator.value=" "),d=d.concat(a[b].elements);this.selfSelectors=[new e(d)],this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo())},b.exports=f},{"./node":76,"./selector":82}],66:[function(a,b,c){var d=a("./node"),e=a("./media"),f=a("./url"),g=a("./quoted"),h=a("./ruleset"),i=a("./anonymous"),j=a("../utils"),k=a("../less-error"),l=function(a,b,c,d,e,f){if(this.options=c,this._index=d,this._fileInfo=e,this.path=a,this.features=b,this.allowRoot=!0,void 0!==this.options.less||this.options.inline)this.css=!this.options.less||this.options.inline;else{var g=this.getPath();g&&/[#\.\&\?]css([\?;].*)?$/.test(g)&&(this.css=!0)}this.copyVisibilityInfo(f),this.setParent(this.features,this),this.setParent(this.path,this)};l.prototype=new d,l.prototype.type="Import",l.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.path=a.visit(this.path),this.options.isPlugin||this.options.inline||!this.root||(this.root=a.visit(this.root))},l.prototype.genCSS=function(a,b){this.css&&void 0===this.path._fileInfo.reference&&(b.add("@import ",this._fileInfo,this._index),this.path.genCSS(a,b),this.features&&(b.add(" "),this.features.genCSS(a,b)),b.add(";"))},l.prototype.getPath=function(){return this.path instanceof f?this.path.value.value:this.path.value},l.prototype.isVariableImport=function(){var a=this.path;return a instanceof f&&(a=a.value),!(a instanceof g)||a.containsVariables()},l.prototype.evalForImport=function(a){var b=this.path;return b instanceof f&&(b=b.value),new l(b.eval(a),this.features,this.options,this._index,this._fileInfo,this.visibilityInfo())},l.prototype.evalPath=function(a){var b=this.path.eval(a),c=this._fileInfo&&this._fileInfo.rootpath;if(!(b instanceof f)){if(c){var d=b.value;d&&a.isPathRelative(d)&&(b.value=c+d)}b.value=a.normalizePath(b.value)}return b},l.prototype.eval=function(a){var b=this.doEval(a);return(this.options.reference||this.blocksVisibility())&&(b.length||0===b.length?b.forEach(function(a){a.addVisibilityBlock()}):b.addVisibilityBlock()),b},l.prototype.doEval=function(a){var b,c,d=this.features&&this.features.eval(a);if(this.options.isPlugin){if(this.root&&this.root.eval)try{this.root.eval(a)}catch(f){throw f.message="Plugin error during evaluation",new k(f,this.root.imports,this.root.filename)}return c=a.frames[0]&&a.frames[0].functionRegistry,c&&this.root&&this.root.functions&&c.addMultiple(this.root.functions),[]}if(this.skip&&("function"==typeof this.skip&&(this.skip=this.skip()),this.skip))return[];if(this.options.inline){var g=new i(this.root,0,{filename:this.importedFilename,reference:this.path._fileInfo&&this.path._fileInfo.reference},(!0),(!0));return this.features?new e([g],this.features.value):[g]}if(this.css){var m=new l(this.evalPath(a),d,this.options,this._index);if(!m.css&&this.error)throw this.error;return m}return b=new h(null,j.copyArray(this.root.rules)),b.evalImports(a),this.features?new e(b.rules,this.features.value):b.rules},b.exports=l},{"../less-error":37,"../utils":89,"./anonymous":50,"./media":71,"./node":76,"./quoted":80,"./ruleset":81,"./url":85}],67:[function(a,b,c){var d=Object.create(null);d.Node=a("./node"),d.Color=a("./color"),d.AtRule=a("./atrule"),d.DetachedRuleset=a("./detached-ruleset"),d.Operation=a("./operation"),d.Dimension=a("./dimension"),d.Unit=a("./unit"),d.Keyword=a("./keyword"),d.Variable=a("./variable"),d.Property=a("./property"),d.Ruleset=a("./ruleset"),d.Element=a("./element"),d.Attribute=a("./attribute"),d.Combinator=a("./combinator"),d.Selector=a("./selector"),d.Quoted=a("./quoted"),d.Expression=a("./expression"),d.Declaration=a("./declaration"),d.Call=a("./call"),d.URL=a("./url"),d.Import=a("./import"),d.mixin={Call:a("./mixin-call"),Definition:a("./mixin-definition")},d.Comment=a("./comment"),d.Anonymous=a("./anonymous"),d.Value=a("./value"),d.JavaScript=a("./javascript"),d.Assignment=a("./assignment"),d.Condition=a("./condition"),d.Paren=a("./paren"),d.Media=a("./media"),d.UnicodeDescriptor=a("./unicode-descriptor"),d.Negative=a("./negative"),d.Extend=a("./extend"),d.VariableCall=a("./variable-call"),d.NamespaceValue=a("./namespace-value"),b.exports=d},{"./anonymous":50,"./assignment":51,"./atrule":52,"./attribute":53,"./call":54,"./color":55,"./combinator":56,"./comment":57,"./condition":58,"./declaration":60,"./detached-ruleset":61,"./dimension":62,"./element":63,"./expression":64,"./extend":65,"./import":66,"./javascript":68,"./keyword":70,"./media":71,"./mixin-call":72,"./mixin-definition":73,"./namespace-value":74,"./negative":75,"./node":76,"./operation":77,"./paren":78,"./property":79,"./quoted":80,"./ruleset":81,"./selector":82,"./unicode-descriptor":83,"./unit":84,"./url":85,"./value":86,"./variable":88,"./variable-call":87}],68:[function(a,b,c){var d=a("./js-eval-node"),e=a("./dimension"),f=a("./quoted"),g=a("./anonymous"),h=function(a,b,c,d){this.escaped=b,this.expression=a,this._index=c,this._fileInfo=d};h.prototype=new d,h.prototype.type="JavaScript",h.prototype.eval=function(a){var b=this.evaluateJavaScript(this.expression,a),c=typeof b;return"number"!==c||isNaN(b)?"string"===c?new f('"'+b+'"',b,this.escaped,this._index):new g(Array.isArray(b)?b.join(", "):b):new e(b)},b.exports=h},{"./anonymous":50,"./dimension":62,"./js-eval-node":69,"./quoted":80}],69:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=function(){};f.prototype=new d,f.prototype.evaluateJavaScript=function(a,b){var c,d=this,f={};if(!b.javascriptEnabled)throw{message:"Inline JavaScript is not enabled. Is it set in your options?",filename:this.fileInfo().filename,index:this.getIndex()};a=a.replace(/@\{([\w-]+)\}/g,function(a,c){return d.jsify(new e("@"+c,d.getIndex(),d.fileInfo()).eval(b))});try{a=new Function("return ("+a+")")}catch(g){throw{message:"JavaScript evaluation error: "+g.message+" from `"+a+"`",filename:this.fileInfo().filename,index:this.getIndex()}}var h=b.frames[0].variables();for(var i in h)h.hasOwnProperty(i)&&(f[i.slice(1)]={value:h[i].value,toJS:function(){return this.value.eval(b).toCSS()}});try{c=a.call(f)}catch(g){throw{message:"JavaScript evaluation error: '"+g.name+": "+g.message.replace(/["]/g,"'")+"'",filename:this.fileInfo().filename,index:this.getIndex()}}return c},f.prototype.jsify=function(a){return Array.isArray(a.value)&&a.value.length>1?"["+a.value.map(function(a){return a.toCSS()}).join(", ")+"]":a.toCSS()},b.exports=f},{"./node":76,"./variable":88}],70:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Keyword",e.prototype.genCSS=function(a,b){if("%"===this.value)throw{type:"Syntax",message:"Invalid % without number"};b.add(this.value)},e.True=new e("true"),e.False=new e("false"),b.exports=e},{"./node":76}],71:[function(a,b,c){var d=a("./ruleset"),e=a("./value"),f=a("./selector"),g=a("./anonymous"),h=a("./expression"),i=a("./atrule"),j=a("../utils"),k=function(a,b,c,g,h){this._index=c,this._fileInfo=g;var i=new f([],null,null,this._index,this._fileInfo).createEmptySelectors();this.features=new e(b),this.rules=[new d(i,a)],this.rules[0].allowImports=!0,this.copyVisibilityInfo(h),this.allowRoot=!0,this.setParent(i,this),this.setParent(this.features,this),this.setParent(this.rules,this)};k.prototype=new i,k.prototype.type="Media",k.prototype.isRulesetLike=function(){return!0},k.prototype.accept=function(a){this.features&&(this.features=a.visit(this.features)),this.rules&&(this.rules=a.visitArray(this.rules))},k.prototype.genCSS=function(a,b){b.add("@media ",this._fileInfo,this._index),this.features.genCSS(a,b),this.outputRuleset(a,b,this.rules)},k.prototype.eval=function(a){a.mediaBlocks||(a.mediaBlocks=[],a.mediaPath=[]);var b=new k(null,[],this._index,this._fileInfo,this.visibilityInfo());return this.debugInfo&&(this.rules[0].debugInfo=this.debugInfo,b.debugInfo=this.debugInfo),b.features=this.features.eval(a),a.mediaPath.push(b),a.mediaBlocks.push(b),this.rules[0].functionRegistry=a.frames[0].functionRegistry.inherit(),a.frames.unshift(this.rules[0]),b.rules=[this.rules[0].eval(a)],a.frames.shift(),a.mediaPath.pop(),0===a.mediaPath.length?b.evalTop(a):b.evalNested(a)},k.prototype.evalTop=function(a){var b=this;if(a.mediaBlocks.length>1){var c=new f([],null,null,this.getIndex(),this.fileInfo()).createEmptySelectors();b=new d(c,a.mediaBlocks),b.multiMedia=!0,b.copyVisibilityInfo(this.visibilityInfo()),this.setParent(b,this)}return delete a.mediaBlocks,delete a.mediaPath,b},k.prototype.evalNested=function(a){var b,c,f=a.mediaPath.concat([this]);for(b=0;b<f.length;b++)c=f[b].features instanceof e?f[b].features.value:f[b].features,f[b]=Array.isArray(c)?c:[c];return this.features=new e(this.permute(f).map(function(a){for(a=a.map(function(a){return a.toCSS?a:new g(a)}),b=a.length-1;b>0;b--)a.splice(b,0,new g("and"));return new h(a)})),this.setParent(this.features,this),new d([],[])},k.prototype.permute=function(a){if(0===a.length)return[];if(1===a.length)return a[0];for(var b=[],c=this.permute(a.slice(1)),d=0;d<c.length;d++)for(var e=0;e<a[0].length;e++)b.push([a[0][e]].concat(c[d]));return b},k.prototype.bubbleSelectors=function(a){a&&(this.rules=[new d(j.copyArray(a),[this.rules[0]])],this.setParent(this.rules,this))},b.exports=k},{"../utils":89,"./anonymous":50,"./atrule":52,"./expression":64,"./ruleset":81,"./selector":82,"./value":86}],72:[function(a,b,c){var d=a("./node"),e=a("./selector"),f=a("./mixin-definition"),g=a("../functions/default"),h=function(a,b,c,d,f){this.selector=new e(a),this.arguments=b||[],this._index=c,this._fileInfo=d,this.important=f,this.allowRoot=!0,this.setParent(this.selector,this)};h.prototype=new d,h.prototype.type="MixinCall",h.prototype.accept=function(a){this.selector&&(this.selector=a.visit(this.selector)),this.arguments.length&&(this.arguments=a.visitArray(this.arguments))},h.prototype.eval=function(a){function b(b,c){var d,e,f;for(d=0;d<2;d++){for(x[d]=!0,g.value(d),e=0;e<c.length&&x[d];e++)f=c[e],f.matchCondition&&(x[d]=x[d]&&f.matchCondition(null,a));b.matchCondition&&(x[d]=x[d]&&b.matchCondition(t,a))}return x[0]||x[1]?x[0]!=x[1]?x[1]?A:B:z:y}var c,d,e,h,i,j,k,l,m,n,o,p,q,r,s,t=[],u=[],v=!1,w=[],x=[],y=-1,z=0,A=1,B=2;for(this.selector=this.selector.eval(a),j=0;j<this.arguments.length;j++)if(h=this.arguments[j],i=h.value.eval(a),h.expand&&Array.isArray(i.value))for(i=i.value,k=0;k<i.length;k++)t.push({value:i[k]});else t.push({name:h.name,value:i});for(s=function(b){return b.matchArgs(null,a)},j=0;j<a.frames.length;j++)if((c=a.frames[j].find(this.selector,null,s)).length>0){for(n=!0,k=0;k<c.length;k++){for(d=c[k].rule,e=c[k].path,m=!1,l=0;l<a.frames.length;l++)if(!(d instanceof f)&&d===(a.frames[l].originalRuleset||a.frames[l])){m=!0;break}m||d.matchArgs(t,a)&&(o={mixin:d,group:b(d,e)},o.group!==y&&w.push(o),v=!0)}for(g.reset(),q=[0,0,0],k=0;k<w.length;k++)q[w[k].group]++;if(q[z]>0)p=B;else if(p=A,q[A]+q[B]>1)throw{type:"Runtime",message:"Ambiguous use of `default()` found when matching for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename};for(k=0;k<w.length;k++)if(o=w[k].group,o===z||o===p)try{d=w[k].mixin,d instanceof f||(r=d.originalRuleset||d,d=new f("",[],d.rules,null,(!1),null,r.visibilityInfo()),d.originalRuleset=r);var C=d.evalCall(a,t,this.important).rules;this._setVisibilityToReplacement(C),Array.prototype.push.apply(u,C)}catch(D){throw{message:D.message,index:this.getIndex(),filename:this.fileInfo().filename,stack:D.stack}}if(v)return u}throw n?{type:"Runtime",message:"No matching definition was found for `"+this.format(t)+"`",index:this.getIndex(),filename:this.fileInfo().filename}:{type:"Name",message:this.selector.toCSS().trim()+" is undefined",index:this.getIndex(),filename:this.fileInfo().filename}},h.prototype._setVisibilityToReplacement=function(a){var b,c;if(this.blocksVisibility())for(b=0;b<a.length;b++)c=a[b],c.addVisibilityBlock()},h.prototype.format=function(a){return this.selector.toCSS().trim()+"("+(a?a.map(function(a){var b="";return a.name&&(b+=a.name+":"),b+=a.value.toCSS?a.value.toCSS():"???"}).join(", "):"")+")"},b.exports=h},{"../functions/default":24,"./mixin-definition":73,"./node":76,"./selector":82}],73:[function(a,b,c){var d=a("./selector"),e=a("./element"),f=a("./ruleset"),g=a("./declaration"),h=a("./detached-ruleset"),i=a("./expression"),j=a("../contexts"),k=a("../utils"),l=function(a,b,c,f,g,h,i){this.name=a||"anonymous mixin",this.selectors=[new d([new e(null,a,(!1),this._index,this._fileInfo)])],this.params=b,this.condition=f,this.variadic=g,this.arity=b.length,this.rules=c,this._lookups={};var j=[];this.required=b.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:(j.push(b.name),a)},0),this.optionalParameters=j,this.frames=h,this.copyVisibilityInfo(i),this.allowRoot=!0};l.prototype=new f,l.prototype.type="MixinDefinition",l.prototype.evalFirst=!0,l.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))},l.prototype.evalParams=function(a,b,c,d){var e,l,m,n,o,p,q,r,s=new f(null,null),t=k.copyArray(this.params),u=0;if(b.frames&&b.frames[0]&&b.frames[0].functionRegistry&&(s.functionRegistry=b.frames[0].functionRegistry.inherit()),b=new j.Eval(b,[s].concat(b.frames)),c)for(c=k.copyArray(c),u=c.length,m=0;m<u;m++)if(l=c[m],p=l&&l.name){for(q=!1,n=0;n<t.length;n++)if(!d[n]&&p===t[n].name){d[n]=l.value.eval(a),s.prependRule(new g(p,l.value.eval(a))),q=!0;break}if(q){c.splice(m,1),m--;continue}throw{type:"Runtime",message:"Named argument for "+this.name+" "+c[m].name+" not found"}}for(r=0,m=0;m<t.length;m++)if(!d[m]){if(l=c&&c[r],p=t[m].name)if(t[m].variadic){for(e=[],n=r;n<u;n++)e.push(c[n].value.eval(a));s.prependRule(new g(p,new i(e).eval(a)))}else{if(o=l&&l.value)o=Array.isArray(o)?new h(new f("",o)):o.eval(a);else{if(!t[m].value)throw{type:"Runtime",message:"wrong number of arguments for "+this.name+" ("+u+" for "+this.arity+")"};o=t[m].value.eval(b),s.resetCache()}s.prependRule(new g(p,o)),d[m]=o}if(t[m].variadic&&c)for(n=r;n<u;n++)d[n]=c[n].value.eval(a);r++}return s},l.prototype.makeImportant=function(){var a=this.rules?this.rules.map(function(a){return a.makeImportant?a.makeImportant(!0):a}):this.rules,b=new l(this.name,this.params,a,this.condition,this.variadic,this.frames);return b},l.prototype.eval=function(a){return new l(this.name,this.params,this.rules,this.condition,this.variadic,this.frames||k.copyArray(a.frames))},l.prototype.evalCall=function(a,b,c){var d,e,h=[],l=this.frames?this.frames.concat(a.frames):a.frames,m=this.evalParams(a,new j.Eval(a,l),b,h);return m.prependRule(new g("@arguments",new i(h).eval(a))),d=k.copyArray(this.rules),e=new f(null,d),e.originalRuleset=this,e=e.eval(new j.Eval(a,[this,m].concat(l))),c&&(e=e.makeImportant()),e},l.prototype.matchCondition=function(a,b){return!(this.condition&&!this.condition.eval(new j.Eval(b,[this.evalParams(b,new j.Eval(b,this.frames?this.frames.concat(b.frames):b.frames),a,[])].concat(this.frames||[]).concat(b.frames))))},l.prototype.matchArgs=function(a,b){var c,d=a&&a.length||0,e=this.optionalParameters,f=a?a.reduce(function(a,b){return e.indexOf(b.name)<0?a+1:a},0):0;if(this.variadic){if(f<this.required-1)return!1}else{if(f<this.required)return!1;if(d>this.params.length)return!1}c=Math.min(f,this.arity);for(var g=0;g<c;g++)if(!this.params[g].name&&!this.params[g].variadic&&a[g].value.eval(b).toCSS()!=this.params[g].value.eval(b).toCSS())return!1;return!0},b.exports=l},{"../contexts":12,"../utils":89,"./declaration":60,"./detached-ruleset":61,"./element":63,"./expression":64,"./ruleset":81,"./selector":82}],74:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=a("./ruleset"),g=a("./selector"),h=function(a,b,c,d,e){this.value=a,this.lookups=b,this.important=c,this._index=d,this._fileInfo=e};h.prototype=new d,h.prototype.type="NamespaceValue",h.prototype.eval=function(a){var b,c,d=this.value.eval(a);for(b=0;b<this.lookups.length;b++){if(c=this.lookups[b],Array.isArray(d)&&(d=new f([new g],d)),""===c)d=d.lastDeclaration();else if("@"===c.charAt(0)){if("@"===c.charAt(1)&&(c="@"+new e(c.substr(1)).eval(a).value),d.variables&&(d=d.variable(c)),!d)throw{type:"Name",message:"variable "+c+" not found",filename:this.fileInfo().filename,index:this.getIndex()}}else{if(c="$@"===c.substring(0,2)?"$"+new e(c.substr(1)).eval(a).value:"$"===c.charAt(0)?c:"$"+c,d.properties&&(d=d.property(c)),!d)throw{type:"Name",message:'property "'+c.substr(1)+'" not found',filename:this.fileInfo().filename,index:this.getIndex()};d=d[d.length-1]}d.value&&(d=d.eval(a).value),d.ruleset&&(d=d.ruleset.eval(a))}return d},b.exports=h},{"./node":76,"./ruleset":81,"./selector":82,"./variable":88}],75:[function(a,b,c){var d=a("./node"),e=a("./operation"),f=a("./dimension"),g=function(a){this.value=a};g.prototype=new d,g.prototype.type="Negative",g.prototype.genCSS=function(a,b){b.add("-"),this.value.genCSS(a,b)},g.prototype.eval=function(a){return a.isMathOn()?new e("*",[new f((-1)),this.value]).eval(a):new g(this.value.eval(a))},b.exports=g},{"./dimension":62,"./node":76,"./operation":77}],76:[function(a,b,c){var d=function(){this.parent=null,this.visibilityBlocks=void 0,this.nodeVisible=void 0,this.rootNode=null,this.parsed=null;var a=this;Object.defineProperty(this,"currentFileInfo",{get:function(){return a.fileInfo()}}),Object.defineProperty(this,"index",{get:function(){return a.getIndex()}})};d.prototype.setParent=function(a,b){function c(a){a&&a instanceof d&&(a.parent=b)}Array.isArray(a)?a.forEach(c):c(a)},d.prototype.getIndex=function(){return this._index||this.parent&&this.parent.getIndex()||0},d.prototype.fileInfo=function(){return this._fileInfo||this.parent&&this.parent.fileInfo()||{}},d.prototype.isRulesetLike=function(){return!1},d.prototype.toCSS=function(a){var b=[];return this.genCSS(a,{add:function(a,c,d){b.push(a)},isEmpty:function(){return 0===b.length}}),b.join("")},d.prototype.genCSS=function(a,b){b.add(this.value)},d.prototype.accept=function(a){this.value=a.visit(this.value)},d.prototype.eval=function(){return this},d.prototype._operate=function(a,b,c,d){switch(b){case"+":return c+d;case"-":return c-d;case"*":return c*d;case"/":return c/d}},d.prototype.fround=function(a,b){var c=a&&a.numPrecision;return c?Number((b+2e-16).toFixed(c)):b},d.compare=function(a,b){if(a.compare&&"Quoted"!==b.type&&"Anonymous"!==b.type)return a.compare(b);if(b.compare)return-b.compare(a);if(a.type===b.type){if(a=a.value,b=b.value,!Array.isArray(a))return a===b?0:void 0;if(a.length===b.length){for(var c=0;c<a.length;c++)if(0!==d.compare(a[c],b[c]))return;return 0}}},d.numericCompare=function(a,b){return a<b?-1:a===b?0:a>b?1:void 0},d.prototype.blocksVisibility=function(){return null==this.visibilityBlocks&&(this.visibilityBlocks=0),0!==this.visibilityBlocks},d.prototype.addVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks+1},d.prototype.removeVisibilityBlock=function(){null==this.visibilityBlocks&&(this.visibilityBlocks=0),this.visibilityBlocks=this.visibilityBlocks-1},d.prototype.ensureVisibility=function(){this.nodeVisible=!0},d.prototype.ensureInvisibility=function(){this.nodeVisible=!1},d.prototype.isVisible=function(){return this.nodeVisible},d.prototype.visibilityInfo=function(){return{visibilityBlocks:this.visibilityBlocks,nodeVisible:this.nodeVisible}},d.prototype.copyVisibilityInfo=function(a){a&&(this.visibilityBlocks=a.visibilityBlocks,this.nodeVisible=a.nodeVisible)},b.exports=d},{}],77:[function(a,b,c){var d=a("./node"),e=a("./color"),f=a("./dimension"),g=a("../math-constants"),h=function(a,b,c){this.op=a.trim(),this.operands=b,this.isSpaced=c};h.prototype=new d,h.prototype.type="Operation",h.prototype.accept=function(a){this.operands=a.visit(this.operands)},h.prototype.eval=function(a){var b,c=this.operands[0].eval(a),d=this.operands[1].eval(a);if(a.isMathOn(this.op)){if(b="./"===this.op?"/":this.op,c instanceof f&&d instanceof e&&(c=c.toColor()),d instanceof f&&c instanceof e&&(d=d.toColor()),!c.operate){if(c instanceof h&&"/"===c.op&&a.math===g.PARENS_DIVISION)return new h(this.op,[c,d],this.isSpaced);throw{type:"Operation",message:"Operation on an invalid type"}}return c.operate(a,b,d)}return new h(this.op,[c,d],this.isSpaced)},h.prototype.genCSS=function(a,b){this.operands[0].genCSS(a,b),this.isSpaced&&b.add(" "),b.add(this.op),this.isSpaced&&b.add(" "),this.operands[1].genCSS(a,b)},b.exports=h},{"../math-constants":39,"./color":55,"./dimension":62,"./node":76}],78:[function(a,b,c){var d=a("./node"),e=function(a){this.value=a};e.prototype=new d,e.prototype.type="Paren",e.prototype.genCSS=function(a,b){b.add("("),this.value.genCSS(a,b),b.add(")")},e.prototype.eval=function(a){return new e(this.value.eval(a))},b.exports=e},{"./node":76}],79:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=function(a,b,c){this.name=a,this._index=b,this._fileInfo=c};f.prototype=new d,f.prototype.type="Property",f.prototype.eval=function(a){var b,c=this.name,d=a.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;if(this.evaluating)throw{type:"Name",message:"Recursive property reference for "+c,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,b=this.find(a.frames,function(b){var f,g=b.property(c);if(g){for(var h=0;h<g.length;h++)f=g[h],g[h]=new e(f.name,f.value,f.important,f.merge,f.index,f.currentFileInfo,f.inline,f.variable);if(d(g),f=g[g.length-1],f.important){var i=a.importantScope[a.importantScope.length-1];i.important=f.important}return f=f.value.eval(a)}}))return this.evaluating=!1,b;throw{type:"Name",message:"Property '"+c+"' is undefined",filename:this.currentFileInfo.filename,index:this.index}},f.prototype.find=function(a,b){for(var c,d=0;d<a.length;d++)if(c=b.call(a,a[d]))return c;return null},b.exports=f},{"./declaration":60,"./node":76}],80:[function(a,b,c){var d=a("./node"),e=a("./variable"),f=a("./property"),g=function(a,b,c,d,e){this.escaped=null==c||c,this.value=b||"",this.quote=a.charAt(0),this._index=d,this._fileInfo=e,this.variableRegex=/@\{([\w-]+)\}/g,this.propRegex=/\$\{([\w-]+)\}/g};g.prototype=new d,g.prototype.type="Quoted",g.prototype.genCSS=function(a,b){this.escaped||b.add(this.quote,this.fileInfo(),this.getIndex()),b.add(this.value),this.escaped||b.add(this.quote)},g.prototype.containsVariables=function(){return this.value.match(this.variableRegex)},g.prototype.eval=function(a){function b(a,b,c){var d=a;do a=d,d=a.replace(b,c);while(a!==d);return d}var c=this,d=this.value,h=function(b,d){var f=new e("@"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return f instanceof g?f.value:f.toCSS()},i=function(b,d){var e=new f("$"+d,c.getIndex(),c.fileInfo()).eval(a,!0);return e instanceof g?e.value:e.toCSS()};return d=b(d,this.variableRegex,h),d=b(d,this.propRegex,i),new g(this.quote+d+this.quote,d,this.escaped,this.getIndex(),this.fileInfo())},g.prototype.compare=function(a){return"Quoted"!==a.type||this.escaped||a.escaped?a.toCSS&&this.toCSS()===a.toCSS()?0:void 0:d.numericCompare(this.value,a.value)},b.exports=g},{"./node":76,"./property":79,"./variable":88}],81:[function(a,b,c){var d=a("./node"),e=a("./declaration"),f=a("./keyword"),g=a("./comment"),h=a("./paren"),i=a("./selector"),j=a("./element"),k=a("./anonymous"),l=a("../contexts"),m=a("../functions/function-registry"),n=a("../functions/default"),o=a("./debug-info"),p=a("../utils"),q=function(a,b,c,d){this.selectors=a,this.rules=b,this._lookups={},this._variables=null,this._properties=null,this.strictImports=c,this.copyVisibilityInfo(d),this.allowRoot=!0,this.setParent(this.selectors,this),this.setParent(this.rules,this)};q.prototype=new d,q.prototype.type="Ruleset",q.prototype.isRuleset=!0,q.prototype.isRulesetLike=function(){return!0},q.prototype.accept=function(a){this.paths?this.paths=a.visitArray(this.paths,!0):this.selectors&&(this.selectors=a.visitArray(this.selectors)),this.rules&&this.rules.length&&(this.rules=a.visitArray(this.rules))},q.prototype.eval=function(a){var b,c,f,g,h,i=!1;if(this.selectors&&(c=this.selectors.length)){for(b=new Array(c),n.error({type:"Syntax",message:"it is currently only allowed in parametric mixin guards,"}),g=0;g<c;g++){f=this.selectors[g].eval(a);for(var j=0;j<f.elements.length;j++)if(f.elements[j].isVariable){h=!0;break}b[g]=f,f.evaldCondition&&(i=!0)}if(h){var k=new Array(c);for(g=0;g<c;g++)f=b[g],k[g]=f.toCSS(a);this.parse.parseNode(k.join(","),["selectors"],b[0].getIndex(),b[0].fileInfo(),function(a,c){c&&(b=p.flattenArray(c))})}n.reset()}else i=!0;var l,o,r=this.rules?p.copyArray(this.rules):null,s=new q(b,r,this.strictImports,this.visibilityInfo());s.originalRuleset=this,s.root=this.root,s.firstRoot=this.firstRoot,s.allowImports=this.allowImports,this.debugInfo&&(s.debugInfo=this.debugInfo),i||(r.length=0),s.functionRegistry=function(a){for(var b,c=0,d=a.length;c!==d;++c)if(b=a[c].functionRegistry)return b;return m}(a.frames).inherit();var t=a.frames;t.unshift(s);var u=a.selectors;u||(a.selectors=u=[]),u.unshift(this.selectors),(s.root||s.allowImports||!s.strictImports)&&s.evalImports(a);var v=s.rules;for(g=0;l=v[g];g++)l.evalFirst&&(v[g]=l.eval(a));var w=a.mediaBlocks&&a.mediaBlocks.length||0;for(g=0;l=v[g];g++)"MixinCall"===l.type?(r=l.eval(a).filter(function(a){return!(a instanceof e&&a.variable)||!s.variable(a.name)}),v.splice.apply(v,[g,1].concat(r)),g+=r.length-1,s.resetCache()):"VariableCall"===l.type&&(r=l.eval(a).rules.filter(function(a){return!(a instanceof e&&a.variable)}),v.splice.apply(v,[g,1].concat(r)),g+=r.length-1,s.resetCache());for(g=0;l=v[g];g++)l.evalFirst||(v[g]=l=l.eval?l.eval(a):l);for(g=0;l=v[g];g++)if(l instanceof q&&l.selectors&&1===l.selectors.length&&l.selectors[0]&&l.selectors[0].isJustParentSelector()){v.splice(g--,1);for(var j=0;o=l.rules[j];j++)o instanceof d&&(o.copyVisibilityInfo(l.visibilityInfo()),o instanceof e&&o.variable||v.splice(++g,0,o))}if(t.shift(),u.shift(),a.mediaBlocks)for(g=w;g<a.mediaBlocks.length;g++)a.mediaBlocks[g].bubbleSelectors(b);return s},q.prototype.evalImports=function(a){var b,c,d=this.rules;if(d)for(b=0;b<d.length;b++)"Import"===d[b].type&&(c=d[b].eval(a),c&&(c.length||0===c.length)?(d.splice.apply(d,[b,1].concat(c)),b+=c.length-1):d.splice(b,1,c),this.resetCache())},q.prototype.makeImportant=function(){var a=new q(this.selectors,this.rules.map(function(a){return a.makeImportant?a.makeImportant():a}),this.strictImports,this.visibilityInfo());return a},q.prototype.matchArgs=function(a){return!a||0===a.length},q.prototype.matchCondition=function(a,b){var c=this.selectors[this.selectors.length-1];return!!c.evaldCondition&&!(c.condition&&!c.condition.eval(new l.Eval(b,b.frames)))},q.prototype.resetCache=function(){this._rulesets=null,this._variables=null,this._properties=null,this._lookups={}},q.prototype.variables=function(){return this._variables||(this._variables=this.rules?this.rules.reduce(function(a,b){if(b instanceof e&&b.variable===!0&&(a[b.name]=b),"Import"===b.type&&b.root&&b.root.variables){var c=b.root.variables();for(var d in 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diff --git a/lib/less/index.js b/lib/less/index.js
index 5d00c3fb6..e73535a0e 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 initial = {
-        version: [3, 6, 0],
+        version: [3, 7, 0],
         data: require('./data'),
         tree: require('./tree'),
         Environment: (Environment = require('./environment/environment')),
diff --git a/package.json b/package.json
index 37f380795..84ef4644d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "less",
-  "version": "3.6.0",
+  "version": "3.7.0",
   "description": "Leaner CSS",
   "homepage": "http://lesscss.org",
   "author": {