body, div, ul, li, h1, h2, h3, h4, h5, h6, p, dl, dt, dd, ol, form, input, textarea, th, td, select {   
    margin: 0;   
    padding: 0;   
}   
* {   
    box-sizing: border-box;   
}   
table{   
    border-collapse:collapse;   
}   
body {   
    font-family: "Microsoft YaHei","Lantinghei SC","Open Sans",Arial,"Hiragino Sans GB","寰蒋闆呴粦","STHeiti","WenQuanYi Micro Hei",SimSun,sans-serif;  
}   
  
ul, li {   
    list-style: none;   
}   
  
a {   
    text-decoration: none;   
    color: #333;
    cursor: pointer;
}   
  
input, textarea {   
    outline: none;   
    box-shadow: none;   
}   
  
textarea {   
    resize: none;   
    overflow: auto;   
}   
  
.clearfix {   
    zoom: 1;   
}   
  
.clearfix:after {   
    content: ".";   
    width: 0;   
    height: 0;   
    visibility: hidden;   
    display: block;   
    clear: both;   
}   
  
.fl {   
    float: left   
}   
  
.fr {   
    float: right   
}   
  
.tl {   
    text-align: left;   
}   
  
.tc {   
    text-align: center   
}   
  
.tr {   
    text-align: right;   
}   
  
.ellipse {   
    overflow: hidden;   
    text-overflow: ellipsis;   
    white-space: nowrap;   
}
.white-space{
	white-space: nowrap;  
}
.visi{
	visibility: hidden;
}
.transtion{
	-webkit-transition: all 0.3s ease;
	-moz-transition: all 0.3s ease;
	-ms-transition: all 0.3s ease;
	transition: all 0.3s ease;
}

.main{
	background: #f7f7f7;
}
.section{
	width: auto;
	max-width: 1200px;
	min-width: 300px;
	margin: 0 auto;
	padding: 50px 0;
}
.section .sect_head{
	padding: 20px 0 50px;
	margin-bottom: 35px;
	text-align: center;
	background: url(../img/summit.png) no-repeat center center;
	background-size: auto 90px;
}
.section2 .sect_head{
	background: url(../img/hot.png) no-repeat center center;
	background-size: auto 90px;
}
.section3 .sect_head{
	background: url(../img/video.png) no-repeat center center;
	background-size: auto 90px;
}
.section h2{
	width: auto;
	display: inline-block;
	font-size: 38px;
	font-weight: 400;
	color: #565656;
	padding: 22px 0 12px;
	text-align: center;
	background: url(../img/h2-bj.png) no-repeat bottom center;
}
.section h2.off{
	color: #fff;
}
/*瀵艰埅*/
.nav_list{
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 90px;
	z-index: 1024;
}
.nav{
	max-width: 1200px;
	height: 70px;
	margin: 0 auto;
	border-bottom: 1px #d28034 solid;
}
.nav_list .logo{
	float: left;
	height: 39px;
	margin-top: 15px;
}
.nav_list .logo img{
	height: 100%;
	display: block;
}
.nav_ul{
	float: right;
}
.nav_ul li{
	float: left;
	padding: 0 15px;
}
.nav_ul li.search,
.nav_ul li.login{
	padding: 0 8px;
}
.search-border {
    width: 23%;
    float: left;
    margin-left: 12%;
    height: 33px;
    position: relative;
    padding-right: 70px;
    margin-top: 22px;
}

.search-border .text {
	width: 100%;
	height: 33px;
	line-height: 33px;
	font-size: 14px;
	padding: 0 10px;
	border: none;
	background: rgba(80,85,106,0.5);
	outline: 0;
}

.search-border .submit {
	position: absolute;
	width: 70px;
	top: 0;
	right: 0;
	height: 33px;
	background: #f28200;
	color: #fff;
	font-size: 16px;
	border: 0;
	outline: 0;
	border-top-right-radius: 20px;
    border-bottom-right-radius: 20px;
}
.nav_ul li a{
	display: block;
	height: 70px;
	line-height: 70px;
	color: #fff;
	-webkit-transition: all 0.3s ease;
	-moz-transition: all 0.3s ease;
	-ms-transition: all 0.3s ease;
	transition: all 0.3s ease;
}
.nav_ul li a.on{
	color: #d28034;
}
.nav_ul li.off a{
	color: #f08200;
	border-bottom: 1px #f08200 solid;
}
.nav_ul li.search a{
	width: 20px;
	background: url(../img/search.png) no-repeat center center;
}
.nav_ul li.login a{
	width: 17px;
	background: url(../img/login.png) no-repeat center center;
}
.nav_list .nav.active .logo{
	margin-top: 10px;
	-webkit-transition: all 0.3s ease;
	-moz-transition: all 0.3s ease;
	-ms-transition: all 0.3s ease;
	transition: all 0.3s ease;
}
.nav.active{
	height: 60px;
	width:100%;
	padding: 0 4%;
	background-color:rgb(0,0,0,0.5);
	border:none;
	-webkit-transition: all 0.3s ease;
	-moz-transition: all 0.3s ease;
	-ms-transition: all 0.3s ease;
	transition: all 0.3s ease;
}
.nav.active .nav_ul li a{
	height: 60px;
	line-height: 60px;
	-webkit-transition: all 0.3s ease;
	-moz-transition: all 0.3s ease;
	-ms-transition: all 0.3s ease;
	transition: all 0.3s ease;
}
/*banner*/
.banner{
	position: relative;
	z-index: 1;
}
.banner img{
	width: 100%;
	display: block;
}
.banner .register{
	color: #fff;
	text-align: center;
}
.banner .register h1{
	display: block;
	margin-bottom: 30px;
	font-size: 50px;
	white-space: nowrap;
	font-weight: 400;
}
/*.banner .register a{
	display: block;
	margin: 55px auto 0;
	color: #fff;
}*/
/*搴曢儴*/
.footer{
	width: 100%;
	background: #181824;
	padding: 25px 0;
	text-align: center;
	line-height: 22px;
	color: #5b5b5f;
	font-size: 12px;
}

/*澶撮儴*/
.indexHeader{
	width: 100%;
	height: 5rem;
	text-align: center;
	line-height: 5rem;
	
}

@media only screen and (min-width: 100px) and (max-width: 640px) {
	.nav_list .logo{
		height: 33px;
		margin-left: 5%;
	}
}