@charset "UTF-8";
* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  font-family: "微软雅黑";
  min-height: 100%;
  position: relative;
}

body {
	min-height: 100%;
}

div,
ul,
li {
	margin: 0;
}

html,
body,
div {
  margin: 0;
  padding: 0;
}

img {
  border: 0;
}

header,
footer,
section,
nav {
  display: block;
}

ul {
  padding: 0;
}

li {
  list-style: none;
}

a,
a:hover {
  text-decoration: none;
}
.clearFix:after {
  content: ".";
  clear: both;
  visibility: hidden;
  height: 0;
  display: block;
}

.container {
	width: 1200px;
	margin: 0 auto;

}
header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 99;
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
  -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  padding:16px 0;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

header .container .logo {
  height: 33px;
  float: left;
}

header .container .search-border {
  width: 27%;
  float: left;
  margin-left: 5%;
  height: 33px;
  position: relative;
  padding-right: 70px;
}

header .container .search-border .text {
  width: 100%;
  height: 33px;
  line-height: 33px;
  font-size: 14px;
  padding: 0 10px;
  border: 1px solid #c9c9c9;
  outline: 0;
}

header .container .search-border .submit {
  position: absolute;
  width: 70px;
  top: 0;
  right: 0;
  height: 33px;
  background: #00a4f1;
  color: #fff;
  font-size: 16px;
  border: 0;
  outline: 0;
}

header .container nav {
  float: right;
  height: 33px;
  line-height: 33px;
}

header .container nav a {
  display: inline-block;
  font-size: 18px;
  color: #666666;
  margin: 0 1em;
}

header .container nav a.on {
  color: #00a4f1;
}

header.active {
  padding: 1em 0;
}

.video-container {
	padding-top: 30px;
	padding-bottom: 80px;
}
.category{
	border: 1px solid #e4e4e4;
	padding: 10px 10px;
	font-size: 18px;
	color: #808080;
}
.category:after{
	content: ".";
	clear: both;
	visibility: hidden;
	display: block;
	height: 0;
}
.category-left{
	float: left;
	width: 17%;
	vertical-align: top;
	padding-right: 25px;
	border-right:1px solid #e4e4e4;

}
.category-left li{
	width: 170px;
	line-height: 2em;
	margin-bottom: 10px;
	text-align: center;
	cursor: pointer;
}
.category-left li.on{
	color: #fff;
	background: #00a4f1;
}
.category-right{
	float: left;
	width: 83%;
	padding-left: 25px;
	vertical-align: top;
}
.category-right li{
	display: none;
}
.category-right li.on{
	display: block;
}
.category-right a{
	display: inline-block;
	padding-right: 45px;
	color: #808080;
	margin-bottom: 20px;
	cursor: pointer;
}
.category-right a.on{
	color: #f08300;
}
.category-right a.on:hover{
	color: #f08300;
}

.sort-wrapper{
	background:#f5f5f5;
	color: #666666;
	height: 44px;
	line-height: 44px;
	margin-top: 18px;
	border: 1px solid #e4e4e4;
}
.sort-wrapper:after{
	content:"." ;
	clear: both;
	visibility: hidden;
	height: 0;
	display: block;
}
.sort-wrapper a{
	color: #666666;
}

.sort-a,
.sort-b,
.sort-c {
	float: left;
}
.sort-wrapper ul li{
	display: inline-block;
	margin-right: 40px;
}
.sort-a{
	margin-right: 75px;
}
.sort-a a{
	display: inline-block;
	height: 43px;
	padding: 0 18px;
	cursor: pointer;
}
.sort-a a.on{
	background: #fff;
	color: #f08300;
	border-right: 1px solid #e4e4e4;
	border-left: 1px solid #e4e4e4;
	border-bottom: 1px solid #e4e4e4;
}
.sort-b li a.on{
    color: #f08300;
}
.sort-a a:nth-of-type(1).on{
	border-left: 0;
}
.radioshow{
	display: inline-block;
	border: 1px solid #6a6a6a;
	background: #f5f5f5;
	width: 13px;
	height: 13px;
	border-radius: 100%;
	position: relative;
}
.radioshow:after{
		display: none;
    content: "√";
    position: absolute;
    top: -16px;
    left: 1px;
    font-size: 10px;
    font-weight: bold;
}
input[name="sortCourse"]{
	display: none;
}
input[name="sortCourse"]:checked+.radioshow{
	border-color: #f08300;
}
input[name="sortCourse"]:checked+.radioshow:after{
	display: block;
	color:#f08300 ;
}
input[name="sortCourse"]:checked+span+span{
	color:#f08300 ;
}
.sort-b{
	margin-right: 75px;
}

.sort-b li label,
.sort-c li label {
	cursor: pointer;
}
.courseBox h3{
	text-align: center;
	font-size: 26px;
  font-weight: 400;
}
.course li {
  background: #fff;
  width: 18.6%;
  margin: 1% 0.5%;
  display: inline-block;
  vertical-align: top;
  border: 1px solid #e4e4e4;
}

.course li img {
	display: block;
	width: 100%;
	height:130px;
}

.course li .imgBox {
  position: relative;
}

.course li .imgBox:after {
  content: "";
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  background: url(../img/videoBtn1.png) no-repeat center center;
}

.course li section {
  padding: 0 1em 2em;
}

.course li section h3 {
  color: #000;
  font-size: 16px;
  font-weight: 400;
  height: 46px;
  overflow: hidden;
}

.course li section .info {
  overflow: hidden;
  color: #737778;
  font-size: 14px;
  color: #666666;
  margin-bottom: 10px;
  min-height: 37px;
}

.course li section .info p {
  margin: 0;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.course li section .priceBox {
  color: #ef810f;
  font-size: 16px;
}

.course li section .priceBox span:first-child {
  display: inline-block;
  min-width: 50px;
  margin-right: 10px;
}

.course li section .time {
  text-align: right;
  color: #999999;
  font-size: 14px;
}

.course li:hover .imgBox:after {
  background: url(../img/videoBtn2.png) no-repeat center center;
}
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
	header .container .logo{
		float: none;
	}
	.video-container{
		padding: 40px 0;
	}
	.container {
		width: 100%;
	}
	.category {
		padding: 0;
	}
	.category-left {
		width: 100%;
		padding: 0;
		border-bottom: 1px solid #e4e4e4;
	}
	.category-left li {
		width: 50%;
		float: left;
		margin: 0;
	}
	.category-right a {
		font-size: 14px;
		padding: 0;
		margin-bottom: 6px;
		margin-right: 2%;
	}
	.category-right {
		width: 100%;
		padding: 2% 4%;
	}
	.course li {
		width: 48%;
	}
	.sort-a {
		width: 100%;
		margin-right: 0;
		border-bottom: 1px solid #e4e4e4;
	}
	.sort-a a:nth-of-type(1).on {
		border-bottom: 0;
	}
	.sort-wrapper {
		height: auto;
	}
	.sort-a:after {
		content: ".";
		clear: both;
		visibility: hidden;
		height: 0;
		display: block;
	}
	.sort-a a {
		width: 25%;
		float: left;
		padding: 0 2%;
		text-align: center;
	}
	.sort-b,
	.sort-c {
		width: 50%;
		margin-right: 0;
	}
	.sort-wrapper ul li {
		width: 49%;
		text-align: center;
		margin-right: 0;
		padding: 0 1%;
	}
}

@media only screen and (min-width: 100px) and (max-width: 640px) {
	header .container .logo{
		float: none;
	}
	.video-container{
		padding: 40px 0;
	}
	.container {
		width: 100%;
	}
	.category {
		padding: 0;
	}
	.category-left {
		width: 100%;
		padding: 0;
		border-bottom: 1px solid #e4e4e4;
	}
	.category-left li {
		width: 50%;
		float: left;
		margin: 0;
	}
	.category-right a {
		font-size: 14px;
		padding: 0;
		margin-bottom: 6px;
		margin-right: 2%;
	}
	.category-right {
		width: 100%;
		padding: 2% 4%;
	}
	.course li {
		width: 48%;
	}
	.sort-a {
		width: 100%;
		margin-right: 0;
		border-bottom: 1px solid #e4e4e4;
	}
	.sort-a a:nth-of-type(1).on {
		border-bottom: 0;
	}
	.sort-wrapper {
		height: auto;
	}
	.sort-a:after {
		content: ".";
		clear: both;
		visibility: hidden;
		height: 0;
		display: block;
	}
	.sort-a a {
		width: 25%;
		float: left;
		padding: 0 2%;
		text-align: center;
	}
	.sort-b,
	.sort-c {
		width: 50%;
		margin-right: 0;
	}
	.sort-wrapper ul li {
		margin-right: 0;
		padding: 0 1%;
	}
}