.nav_title{text-align:center; padding:50px 0; font-size:16px;}
.nav_title a{margin:0 20px; display:inline-block; border:1px solid #ccc; height:40px; line-height:40px; padding:0 20px;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px; overflow:hidden}
.nav_title .a{color:#fff; background:#ff6637;border:1px solid #ff6637;}
.content_left{width:240px; margin:50px auto}
.content_left .title{height:45px; background:#ff6637; color:#fff; padding:0 20px; line-height:45px; font-size:16px}
.content_left .title span{background:url(../images/ioc.png) no-repeat 0 center; padding-left:22px;}
.left_nav{border:1px solid #e6e6e6;/* border-top:0; */overflow:hidden;/* padding:0 0 20px 0*/}
.left_nav ul{margin-top:-1px;}
.left_nav li{padding:0 20px; border-bottom:1px dashed #cbcbcb; padding:10px 0px 10px 15px}
.left_nav li .t{line-height:25px; /*padding:0 0 0 18px; */position:relative; font-family:Arial; text-align:left;background:url(../images/ioc_l.png) no-repeat 0 center; padding-left:18px }
.left_nav li .t i{/*position:absolute; */left:0; top:0; width:18px; height:50px;cursor:pointer;}
.left_nav li .t a,.left_nav li .t.hover:hover a{color:#000; font-style:normal; font-size:16px}
.left_nav li .t:hover {background:url(../images/ioc_la.png) no-repeat 0 center;}
.left_nav li .t:hover a{color:#ff5825}
.left_nav li .t.hover {background:url(../images/ioc_b.png) no-repeat 0 center; }
.left_nav li .txt{/*padding:0 0 20px 18px; */display:none}
.left_nav li .txt p{line-height:30px; height:30px; overflow:hidden}
.left_nav .more{background:#ff6637; display:block; width:120px; height:30px; margin:0 auto; text-align:center; line-height:30px; color:#fff; cursor:pointer;border-radius:50px;-moz-border-radius:50px;-webkit-border-radius:50px; overflow:hidden}
.left_nav .more:hover{background:#ff5825}
.left_nav .more span{padding-right:18px; background:url(../images/ioc_ba.png) no-repeat right center;}
.left_nav .more.hover span{background:url(../images/ioc_t.png) no-repeat right center;}

.explain_txt{width:860px; margin:0 auto; line-height:40px; padding:0 0 200px 0; font-size:16px}