.bg-wrapper{
	height: 902px;
	background: url(../images/introduction-bg.png);
}
.main{
	height: 860px;
}

.main .title2{
	background:  url(../images/title-bg2.png) no-repeat center;
	padding: 0 12px;
	height: 162px;
	line-height: 162px;
	font-size: 30px;
}
.main p{
	font-size: 16px;
	line-height: 38px;
}
.introduction {
	margin-bottom: 28px;
}

/*advantage*/
.advantage{
	position: relative;
}
.advantage ul{
	width: 1100px;
	height: 90px;
	border: 1px solid #f1f1f1;
	border-right: none;
	margin: 0 auto;
	background: #fafafa;
}
.advantage li{
	float: left;
	width: 157px;
	height: 90px;
	line-height: 90px;
	text-align: center;
	padding-top: 20px;
	box-sizing: border-box;
	font-size: 14px;
	color: #999;
	position: relative;
	border-right: 1px solid #f1f1f1;
	cursor: pointer;
}
.advantage img{
	width: 33px;
	height: 35px;
	position: absolute;
	top: 10px;
	left: 61px;
}
.advantage .active{
	background: #fff;
	color: #f39800;
	border-top: 4px solid #f39800;
	top: -2px;
	left: -2px;
	width: 158px;
	height: 93px;
}
.advantageContent{
	width: 676px;
	height: 97px;
	padding-top: 27px;
	padding-left: 32px;
	padding-right: 32px;
	border: 1px solid #ededed;
	margin: 48px auto;
	text-align: center;
	font-size: 20px;
	display: none;
	color: #999;
	letter-spacing: 1px;
	line-height: 38px;
}

/*advantage end*/

.principleWrap{
	width: 100%;
	background: #f5f5f5;
}
.principle{
	width: 1200px;
	height: 480px;
	margin: 0 auto;
	color: #363636;
}
.principle .title{
	background: url(../images/title-bg.png) no-repeat center;
	padding: 0 12px;
	height: 162px;
	line-height: 162px;
	font-size: 30px;
}
.several li{
	margin: 0 80px;
}