@charset "utf-8";

.topb{position:fixed; top: 0px; left:0; right:0; z-index:9990; width:100%; background:#FFF}
.shadow{width:100%;height:7px;font-size:0;overflow:hidden;background:url(../images/nav_shadow.png) repeat-x;}
.nav li{ position:relative;}
.gy{width:870px;margin:0 auto;overflow:hidden;}
.top-head{height:75px;width:100%; }
.nav{width:870px; margin:0 auto}
.nav ul{width:870px;}
.nav li{width:96px;margin:0 3px 0 6px;float:left;text-align:center;/* position:relative;*/}
.nav a{width:96px;height:75px;padding-top:28px;display:block;font-size:1.2rem;/*overflow:hidden;*/}
.nav li a:after{content: "";display: block;position: absolute;left: 50%;right: 50%;bottom: -1px;height: 3px;opacity: 0;background-color: #ebcda7;-webkit-transition: all .5s;-o-transition: all .5s;-ms-transition: all .5s;transition: all .5s;}
.nav li a:hover:after{left: 1%;right: 1%;opacity: 1;-webkit-transition: all .5s;-o-transition: all .5s;-ms-transition: all .5s;transition: all .5s;color:#f3782a;}

.nav a#sel{border-bottom:3px solid #ebcda7;color:#ebcda7;}
.nav a#sel:hover:after{opacity: 0;}

.nav .sub{display:none;width:100%;padding:0;position:fixed;top:78px;overflow:hidden;text-align:left;z-index:110;left:0px; background: rgba(207, 207, 207, 0.9);}
.nav .sub .nav_xiao{width:1200px;overflow:hidden;padding-top:5px;margin:0 auto;padding-bottom:50px;}


.nav .sub .nav_xiao .xiao_three{width:1000px;float:right;overflow:hidden;}
.nav .sub .nav_xiao .xiao_three ul{width:1000px;}
.nav .sub .nav_xiao .xiao_three ul li{float:left;display:inline;width:172px;height:190px;overflow:hidden;margin-right:15px;text-align:center;position:inherit;line-height:46px;margin-left:0px;}
.nav .sub .nav_xiao .xiao_three ul li img{width:100%;height:138px;display:block;}
.nav .sub .nav_xiao .xiao_three ul li a{color:#686868;width:100%;font-size:14px;height:100%;padding-top:17px;}
.nav .sub .nav_xiao .xiao_three ul li a:hover{color:#f3782a;}
.nav .sub .nav_xiao .xiao_three ul li:hover img{opacity: 0.8;filter: alpha(opacity=80);}
.nav .sub .nav_xiao .xiao_three ul.nav_wechat li{width:195px;}
.nav .sub .nav_xiao .xiao_three ul.nav_wechat li img{width:195px;height:138px;}