.mask,body,html,#muted{
    width:100%;
    height: 100%;
}

#bgvideo,.mask,.topmask{
    top:0;
    left:0;
    position: absolute;
}
body{min-width:1200px;}
body,html{
    overflow:hidden;
}
#bgvideo{
    z-index:-3;
    background-color:#818793;
}
.mask{
    z-index:-2;
    background-color: rgba(1,7,20,.3);
}
.topmask{
    z-index:-1;
    background-color: rgba(255,255,255,.1);
    width: 100%;
}
.wrapper{
    width: 1200px;
    margin:0 auto;
}
#muted{

}
.header{
    position: relative;
}
.header,.topmask{
    height: 82px;
}

.logo{

}
.logo img{
    display:block;
    width:333px;
    height: 58px;
}
ul{
    list-style:none;
}
.nav{
    margin-top:30px;
    padding-right:30px;
}
.nav li{
    float:left;
    font-size:18px;
    border-right:1px solid #fff;
}
.nav li a{
    display: block;
    padding:0 23px;
    line-height: 20px;
    outline:0;
}
.nav li a:hover{
    color:#fc0;
}
.nav li a,.footer .doc a {
    color:#fff;
    text-decoration:none;
}
.nav li:last-child{
    border-right:none;
}
.sonnav{
    position: absolute;
    bottom:-50px;
    right:30px;
}
.sonnav li{
    float:left;
    margin-left:10px;
    font-size:16px;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    background-color: rgba(255,204,0,.6);
}
.sonnav li:hover{
    background-color: rgba(255,204,0,.95);
}
.sonnav li a{
    display: block;
    padding:0 13px;
    line-height: 24px;
    outline:0;
    color:#fff;
    text-decoration:none;
}
#muted{
    position: absolute;
    left: 10px;
    bottom: -40px;
    width: 30px;
    height: 30px;
    border-radius: 20px;
    background-position: 0 -48px;
    cursor: pointer;
}
#muted,.cnt li a{
    background-image:url(../images/sprite_img.png);
    background-repeat:no-repeat;
}
.cnt{
    padding-top:220px;
    width:1200px;
}
.cnt img{
    display:inline-block;
    width:1200px;
    height: 213px;
}
.cnt ul{
    margin: 20px auto 0;
    padding:0;
}
.cnt li{
    margin-top: 30px;
    margin-left: 30px;
    float: left;
    width: 160px;
    line-height: 45px;
    border-radius: 38px;
}
.cnt li:nth-of-type(1) a{
    background-position:0 0;
}
.cnt li:nth-of-type(2) a{
    background-position:-184px 0;
}
.cnt li:nth-of-type(3) a{
    background-position:-370px 0;
}
.cnt li a{
    display:block;
    width:100%;
    height: 100%;
    text-indent: -9999px;
    opacity: .7;
    outline:0;
}
.cnt li a:hover{
    opacity:1;
}
.footer{
    position:fixed;
    left:0;
    bottom:0;
    padding-bottom:10px;
    width:100%;
    font-size:12px;
    text-align: center;
}
.footer .doc{
    margin-bottom:10px;
    line-height: 20px;
    opacity: .8;
    filter:alpha(opacity=80);
}
.footer .doc a{
    padding-left:15px;
    padding-right:15px;
    border-right:1px solid #fff;
    outline:0;
}
.footer .doc a:last-child{
    border-right:none;
}
.footer .txt{
    margin-top:0;
    color:#fff;
    opacity: .6;
    filter:alpha(opacity=80);
    line-height: 8px;
}
@media screen and (max-height: 800px) {
    .cnt{
        padding-top:100px;
    }
}