//圆
.circle(@rad) {
    border-radius: @rad;
    -moz-border-radius: @rad;
    -webkit-border-radius: @rad;
}

.margin-atuo(){
    margin: 0 auto;
}

// 盒子宽高  
.size(@w, @h) { width: @w; height: @h; }  
.min-size(@min-w,@h) { min-width: @min-w; height: @h;}  
  
// 最小尺寸, 兼容IE6  
.min-width(@min-w) { min-width: @min-w; _width: @min-w; }  
.min-height(@min-h) { min-height: @min-h; _height: @min-h; }  
  
// 内联块级元素, 兼容IE6  
.dib() { display: inline-block; *display: inline; *zoom: 1; }  
  
// 固定定位, 兼容IE6  
.fixed() { position: fixed; _position: absolute; *zoom: 1; }  
  
// 统一盒模型  
.border-box() {  
*, *:after, *:before { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }  
}  

//边框
.bd(@w,@c){border: @w solid @c;}
 //背景
 .bgc(@c){background-color: @c;} 
// 文字图片居中  
.center(text-x) { text-align: center; }  
.center(text-y) { display: table-cell; vertical-align: middle; }  
  
// 块级元素水平居中  
.center(auto-x) { display: block; margin-left: auto; margin-right: auto; }  
  
// 居中, 不确定尺寸, 不兼容 IE6  
.center(unknown) { position: absolute; top: 0; left: 0; right: 0; bottom: 0; margin: auto; }  
.center(unknown-x) { position: absolute; left: 0; right: 0; margin-left: auto; margin-right: auto; }  
.center(unknown-y) { position: absolute; top: 0; bottom: 0; margin-top: auto; margin-bottom: auto; }  
  
// 居中, 确定尺寸, 兼容 IE6  
.center(known, @w, @h) {  
.size(@w, @h);  
position: absolute; top: 50%; left: 50%; margin-top: -(@w / 2); margin-left: -(@h / 2);  
}  
.center(known-x, @w) {  
width: @w;  
position: absolute; left: 50%; margin-left: -(@h / 2);  
}  
.center(known-y, @h) {  
height: @h;  
position: absolute; top: 50%; margin-top: -(@w / 2);  
}  
  
// 居中, CSS3 平移方式, 兼容性不行  
.center(translate) { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }  
  
// 居中, Flex 方式, 兼容性不行  
.center(flex) { display: flex; align-items: center; justify-content: center; }  
  
// 多个子项布局  
.list(float, @w: 25%) { float: left; width: @w; }  
.list(inline, @w: 25%) { .dib(); width: @w; }  
.list(flex) { flex: 1; }  
  
// 遮罩层, 全屏遮罩、区域遮罩  
.over-screen(fixed) { .fixed(); top: 0; left: 0; right: 0; bottom: 0; }  
.over-screen(absolute) { position: absolute; top: 0; left: 0; right: 0; bottom: 0; }  
  
// 容器宽高比固定  
// 100* 1/1 = 100%  
// 100* 3/4 = 75%  
.fixed-ratio(@padding-top: 100%) {  
position: relative; width: 100%; height: 0; padding-top: @padding-top;  
img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }  
}  
  
// 扩展点击区域  
.extend-click() {  
position: relative;  
&:before { content: ''; position: absolute; top: -10px; left: -10px; right: -10px; bottom: -10px; }  
}  
  
// 定宽居中页面布局  
.layout-page(@width: 1200px) { width: @width; margin-left: auto; margin-right: auto; }  
  
// 侧边栏  
// 主要区域：overflow: hidden; margin-left: xx; margin-right: xx;  
.sidebar(left, @width) { position: absolute; top: 0; left: 0; width: @width; }  
.sidebar(right, @width) { position: absolute; top: 0; right: 0; width: @width; }  
  
/*------------------------------------- ├ 字体 ┆ └------------------------------------*/  
  
// 字体大小  
.fz(@fz) { font-size: @fz; }  
  
// 字体大小与行高  
.fz(@fz, @lh) { font-size: @fz; line-height: @lh; }  
  
// 字体大小、行高、高度  
.fz(@fz, @h, @lh: @h) { font-size: @fz; height: @h; line-height: @lh; }  
  
// 行高与高度  
.lh(@h, @lh: @h) { height: @h; line-height: @lh; }  
  
// 字体颜色, 包括链接与非链接  
.color(@color) { color: @color;}  
  
// 字体颜色 + 自身 Hover  
.color(@color, @hovercolor) {  
color: @color;  
&:hover { color: @hovercolor; }  
}  
  
// 字体颜色 + 链接 Hover  
.color(@color, @acolor, @hovercolor) {  
color: @color;  
a {  
color: @acolor;  
&:hover { color: @hovercolor; }  
}  
}  
  
// 正常字体样式  
.normal-font() { font-weight: normal; font-style: normal; }  
  
// 辅助性文字（灰色）  
.assist-font(@color: #b0b0b0, @fz: 14px) { color: @color; font-size: @fz; }  
  
// 禁止换行, 文本溢出省略号显示 (一行)  
.ellipsis() {  
white-space: normal; word-wrap: break-word; word-break: break-all;  
-o-text-overflow: ellipsis; -ms-text-overflow: ellipsis; text-overflow:ellipsis; overflow:hidden;  
}  
  
// 文本溢出省略号显示 (多行)  
// 只支持 webkit 浏览器, 解决方案：高度 = 行高*行数  
// height: 90px; line-height: 30px; -webkit-line-clamp: 3;  
.ellipsis-mult(@n: 3) {  
display: -webkit-box; -webkit-box-orient: vertical;-webkit-line-clamp: @n; word-break: break-all;  
-o-text-overflow: ellipsis; -ms-text-overflow: ellipsis; text-overflow:ellipsis; overflow: hidden;  
}  
 
  
  
// 书写模式：牌匾从右至左水平单行排版效果、文笺从右至左、从上至下排版效果  
.retext(x) { direction: rtl; unicode-bidi: bidi-override; }  
.retext(y) { writing-mode: tb-rl; writing-mode: vertical-rl; }  
  
// 文字透明  
.transparent-text() { font: 0/0 serif; text-shadow: none; color: transparent; }  
  
// 文字隐藏（常用于SEO优化）  
//  
  
  
.hidden-text() { text-indent : -9999px; overflow: hidden; text-align: left; }  
// 文字外发光效果  
.glow-text(@r: 10px, @color: gold) { text-shadow: 0 0 @r @color; }  
  
/*------------------------------------- ├ 图像 ┆ └------------------------------------*/  
  
// 用 max-width 来防止图片撑破容器  
.max-img() { display: block; max-width: 100%; height: auto; }  
  
// 2x 3x 背景图片  
.bg-image(@url) {  
background-image: url("@url + '@2x.png'");  
@media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio: 3) {  
background-image: url("@url + '@3x.png'");  
}  
}  
  
// 全屏大图背景  
.fullscreen-bg(@url) {  
width: 100vw;  
height: 100vh;  
background: url(@url) no-repeat 50% 50%;  
background-size: cover;  
}  
  
// 滤镜: 将彩色照片显示为黑白照片  
.grayscale() {  
filter: grayscale(100%);  
-webkit-filter: grayscale(100%);  
-moz-filter: grayscale(100%);  
-ms-filter: grayscale(100%);  
-o-filter: grayscale(100%);  
}  
  
/*------------------------------------- ├ 动效 ┆ └------------------------------------*/  
  
// 链接默认无下划线，hover后有下划线的样式  
.hover-link() {  
text-decoration: none;  
&:hover { text-decoration: underline; }  
}  
  
// 将链接变成默认的文字样式  
.unstyled-link() {  
color: inherit;  
cursor: inherit;  
text-decoration: inherit;  
&:active, &:focus { outline: none; }  
}  
  
// 盒子阴影  
// box-shadow: 水平阴影的位置, 垂直阴影的位置, 模糊距离, 阴影的大小, 阴影的颜色, 阴影开始方向（默认是从里往外，设置inset就是从外往里）;  
// box-shadow: h-shadow v-shadow blur spread color inset;  
.box-shadow() {  
box-shadow: 0px 14px 26px 0px rgba(0, 0, 0, 0.1);  
}  
  
  
.boxShadow(@x:0,@y:0,@blur:1px,@color:#000){
                    -moz-box-shadow: @arguments;
                    -webkit-box-shadow: @arguments;
                    box-shadow: @arguments;
                }
  
// 盒子 Hover  
.box-hover() {  
// box-shadow: 0px 1px 2px 0px rgba(84, 107, 107, .4);  
transition: all .2s linear;  
&:hover {  
box-shadow: 0 15px 30px rgba(0, 0, 0, .1);  
transform: translate3d(0, -2px, 0);  
}  
}  
  
.box-hover2() {  
transition: transform .5s ease;  
&:hover {  
transform: translateX(10px);  
}  
}  

.hover-bg(@c){
   
    &:hover {  
    background:@c;
    }  
}  
  
// 三维闪动 bug 处理  
.transform-fix() { -webkit-backface-visibility: hidden; -webkit-transform-style: preserve-3d; }  
  
// Animation  
.ani(@name, @time: 1s, @ease: ease-in-out, @fillmode: forwards) {  
animation-name: @name;  
animation-duration: @time;  
animation-timing-function: @ease;  
animation-fill-mode: @fillmode;  
}  
  
/*------------------------------------- ├ 功能 ┆ └------------------------------------*/  
  
// 浮动, 兼容 IE6  
.fl() { float: left; *display: inline; _display:inline; }  
.fr() { float: right; *display: inline; _display:inline; }  
  
// 清除浮动  
.clearfix() {  
*zoom: 1;  
&:after { display: block; clear: both; content: ''; visibility: hidden; height: 0; }  
}  
.clearfix(table) {  
*zoom: 1;  
&:before, &:after { content: " "; display: table; clear: both; }  
}  
  
// 禁止文本被选择  
.user-select() { -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; }  
  
// 隐藏鼠标手势  
.hide-cursor() { cursor: none !important; }  
  
// 鼠标禁用样式，但仍然可以触发事件  
//   
  
.disabled() { cursor: not-allowed; }  
  
// 禁用元素事件  
// 1. 阻止任何点击动作的执行  
// 2. 使链接显示为默认光标(cursor:default)  
// 3. 阻止触发hover和active状态  
// 4. 阻止JavaScript点击事件的触发  
.pointer-events() { pointer-events: none; }  
  
// 模糊  
.blur(@blur: 10px) {  
filter: blur(@blur);  
-webkit-filter: blur(@blur);  
-moz-filter: blur(@blur);  
-o-filter: blur(@blur);  
-ms-filter: blur(@blur);  
filter: progid:DXImageTransform.Microsoft.Blur(PixelRadius='@{blur}');  
*zoom: 1;  
}  
  
// 透明度, 兼容 IE8  
.opacity(@opacity: 20) { opacity: @opacity / 100; filter: alpha(opacity=@opacity); }  
  
// 用伪类来显示打印时 a 标签的链接  
.print-link() {  
@media print {  
a[href]:after { content: " (" attr(href) ") "; }  
}  
}  
  
// 隔行换色  
.zebra-lists(odd, @color) {  
&.odd {  
>li:nth-child(odd) { background-color: @color; }  
}  
}  
.zebra-lists(even, @color) {  
&.even {  
>li:nth-child(even) { background: green; }  
}  
}  
  
// 首字下沉  
.first-letter(@font-size: 6em) {  
&::first-letter{  
float: left;  
line-height: 1;  
font-size: @font-size;  
}  
}  
  
// 特殊标记段落第一行  
.first-line() {  
&::first-line{  
color: red  
}  
}  
  
// 美化选中文本  
.beauty-select() {  
&::selection{  
color: #fff;  
background-color: #6bc30d;  
text-shadow: none;  
}  
}  
  
// 美化占位符 placeholder 样式  
.beauty-placeholder(@fz, @color: #999, @align: left) {  
&:-moz-placeholder { font-size: @fz; color: @color; text-align: @align; }  
&:-ms-input-placeholder { font-size: @fz; color: @color; text-align: @align; }  
&::-webkit-input-placeholder { font-size: @fz; color: @color; text-align: @align; }  
}  
  
// 美化占位符 placeholder 样式（自定义属性和值）  
.beauty-placeholder(custom, @property, @value) {  
&:-moz-placeholder { @{property}: @value; }  
&:-ms-input-placeholder { @{property}: @value; }  
&::-webkit-input-placeholder { @{property}: @value; }  
}  
  
/*------------------------------------- ├ 图形 ┆ └------------------------------------*/  
  
// 三角形  
.triangle(@width: 4px,@color: #000) {  
display: inline-block;  
width: 0;  
height: 0;  
vertical-align: middle;  
border-top: @width solid @color;  
border-left: @width solid transparent;  
border-right: @width solid transparent;  
}  
  
// 三角形箭头气泡效果, IE6-7 无表现  
.arrow(top, @w: 10px, @color, @x: 50%) {  
position: relative;  
&:before { position: absolute; bottom: 100%; left: @x; content: " "; height: 0; width: 0; pointer-events: none; border-style: solid; border-color: transparent; border-bottom-color: @color; border-width: unit(@w, px); @margin: -@w; margin-left: unit(@margin, px); }  
}  
.arrow(right, @w: 10px, @color, @y: 50%) {  
position: relative;  
&:before { position: absolute; left: 100%; top: @y; content: " "; height: 0; width: 0; pointer-events: none; border-style: solid; border-color: transparent; border-left-color: @color; border-width: unit(@w, px); @margin: -@w; margin-top: unit(@margin, px); }  
}  
.arrow(bottom, @w: 10px, @color, @x: 50%) {  
position: relative;  
&:before { position: absolute; top: 100%; left: @x; content: " "; height: 0; width: 0; pointer-events: none; border-style: solid; border-color: transparent; border-top-color: @color; border-width: unit(@w, px); @margin: -@w; margin-left: unit(@margin, px); }  
}  
.arrow(left, @w: 10px, @color, @y: 50%) {  
position: relative;  
&:before { position: absolute; right: 100%; top: @y; content: " "; height: 0; width: 0; pointer-events: none; border-style: solid; border-color: transparent; border-right-color: @color; border-width: unit(@w, px); @margin: -@w; margin-top: unit(@margin, px); }  
}  
  
// 三角形箭头气泡效果, 带边框  
.arrow-with-border(top, @w: 10px, @color, @border-w: 1px, @border-color, @x: 50%) {  
position: relative;  
&:before, &:after { bottom: 100%; left: @x; content: " "; height: 0; width: 0; position: absolute; pointer-events: none; border-style: solid; border-color: transparent; }  
&:after { border-bottom-color: @color; border-width: unit(@w, px); @margin: -@w; margin-left: unit(@margin, px); }  
&:before { border-bottom-color: @border-color; @arrbo: @w+@border-w; border-width: unit(@arrbo, px); @margin-bo: -@arrbo; margin-left: unit(@margin-bo, px); }  
}  
.arrow-with-border(bottom, @w: 10px, @color, @border-w: 1px, @border-color, @x: 50%) {  
position: relative;  
&:before, &:after { top: 100%; left: @x; content: " "; height: 0; width: 0; position: absolute; pointer-events: none; border-style: solid; border-color: transparent; }  
&:after { border-top-color: @color; border-width: unit(@w, px); @margin: -@w; margin-left: unit(@margin, px); }  
&:before { border-top-color: @border-color; @arrbo: @w+@border-w; border-width: unit(@arrbo, px); @margin-bo: -@arrbo; margin-left: unit(@margin-bo, px); }  
}  
.arrow-with-border(left, @w: 10px, @color, @border-w: 1px, @border-color, @y: 50%) {  
position: relative;  
&:before, &:after { top: @y; right: 100%; content: " "; height: 0; width: 0; position: absolute; pointer-events: none; border-style: solid; border-color: transparent; }  
&:after { border-right-color: @color; border-width: unit(@w, px); @margin: -@w; margin-top: unit(@margin, px); }  
&:before { border-right-color: @border-color; @arrbo: @w+@border-w; border-width: unit(@arrbo, px); @margin-bo: -@arrbo; margin-top: unit(@margin-bo, px); }  
}  
.arrow-with-border(right, @w: 10px, @color, @border-w: 1px, @border-color, @y: 50%) {  
position: relative;  
&:before, &:after { top: @y; left: 100%; content: " "; height: 0; width: 0; position: absolute; pointer-events: none; border-style: solid; border-color: transparent; }  
&:after { border-left-color: @color; border-width: unit(@w, px); @margin: -@w; margin-top: unit(@margin, px); }  
&:before { border-left-color: @border-color; @arrbo: @w+@border-w; border-width: unit(@arrbo, px); @margin-bo: -@arrbo; margin-top: unit(@margin-bo, px); }  
}  
  
/*------------------------------------- ├ 组件 ┆ └------------------------------------*/  
  
// 吸顶导航  
.fix-header(@h: 70px) {  
.fixed();  
top: 0;  
left: 0;  
width: 100%;  
height: @h;  
z-index: 1000;  
// background-color: rgba(256, 256, 256, .92);  
// border-bottom: 1px solid rgba(7, 17, 27, 0.1);  
// box-shadow: 0px 0px 20px rgba(0,0,0,0.2);  
}  
  
// 吸底导航  
.fix-header(@h: 70px) {  
.fixed();  
left: 0;  
bottom: 0;  
width: 100%;  
height: @h;  
z-index: 1000;  
}  
  
// 输入框  
.input-text() {  
display: block;  
width: 100%;  
padding: 4px 8px;  
font-size: 14px;  
line-height: 1.42858;  
color: #333;  
border: 1px solid #ddd;  
background-color: #fff;  
border-radius: 3px;  
}  
  
// 分割线  
// |/-  
.separator() {  
margin: 0 10px;  
color: #999;  
font-size: 14px;  
}  
  
// 分割线 / (面包屑导航)  
.separator2() {  
&:before {  
padding: 0 5px;  
color: #ccc;  
content: "/\00a0";  
}  
}  
  
//  
  
  
// 支付宝：我也是有底线的  
.hr() {  
height: 1px;  
margin: 10px 0;  
border: 0;  
clear: both;  
background-color: #e2e2e2;  
}  
// 改装的 fieldset  
//  
  
//返璞归真  
  
.fieldset() {  
border-color: #d2d2d2;  
border-width: 1px 0 0;  
border-style: solid;  
legend {  
padding: 0 20px;  
text-align: center;  
font-size: 20px;  
font-weight: 300;  
}  
}  
// 引用区块（模仿 Layui）  
//  
  
//Lorem ipsum dolor sit amet.  
  
.blockquote() {  
margin-bottom: 10px;  
padding: 15px;  
line-height: 22px;  
border-left: 5px solid #009688;  
border-radius: 0 2px 2px 0;  
background-color: #f2f2f2;  
}  
// 徽章 (椭圆、小圆点)  
// 10  
.badge(...) {  
position: relative;  
display: inline-block;  
font-size: 12px;  
color: #fff;  
background-color: #FF5722;  
}  
.badge(ellipse) {  
min-width: 8px;  
height: 18px;  
padding: 2px 6px;  
text-align: center;  
line-height: 18px;  
border-radius: 9px;  
}  
.badge(dot) {  
width: 8px;  
height: 8px;  
border-radius: 50%;  
}  
  
// 关闭按钮  
// ×  
.close() {  
position: relative;  
-webkit-appearance: none;  
padding: 0;  
cursor: pointer;  
background: 0 0;  
border: 0;  
font-size: 20px;  
font-weight: 700;  
line-height: 1;  
color: #000;  
text-shadow: 0 1px 0 #fff;  
filter: alpha(opacity=20);  
opacity: .2;  
&:hover {  
color: #000;  
text-decoration: none;  
cursor: pointer;  
filter: alpha(opacity=50);  
opacity: .5;  
}  
&:before {  
content: '';  
position: absolute;  
top: -10px;  
left: -10px;  
right: -10px;  
bottom: -10px;  
}  
}  
  
// 1 像素边框问题  
.onepx(...) {  
position: relative;  
&:after {  
content: '';  
display: block;  
position: absolute;  
left: 0;  
width: 100%;  
border-top: 1px solid rgba(7, 17, 27, 0.1);  
transform: scaleY(0.5);  
}  
}  
.onepx(top) { &:after { top: 0; } }  
.onepx(bottom) { &:after { bottom: 0; } }  
.onepx-easy(top, @color: #ccc) { box-shadow: inset 0px -1px 1px -1px @color; }  
.onepx-easy(bottom, @color: #ccc) { box-shadow: inset 0px 1px 1px -1px @color; }