.z1{margin-top:20px;width:377px;height:43px;background:url(https://lxy.aust.edu.cn/skin/images/top_z.png);display:block;float:left;}
.header_main .tel{margin-top: 21px;}
.h_nav a:nth-child(3) {
    background: 0 0;}
.nav_main .nav li a.aLink {
    width: auto;
    margin: auto 1.02em;}
.mobile-nav{

    position:relative;
    z-index:9999;

    background:#091c78;}

.mobile-header{

    height:60px;

    display:flex;

    align-items:center;

    justify-content:space-between;

    padding:0 20px;}

.mobile-logo{

    color:#fff;

    font-size:20px;

    font-weight:bold;}

.mobile-toggle{

    width:42px;

    height:42px;

    border:none;

    background:none;

    color:#fff;

    font-size:28px;

    cursor:pointer;}

.mobile-menu{

    display:none;

    background:#fff;

    box-shadow:0 5px 20px rgba(0,0,0,.15);}

.mobile-menu.active{

    display:block;}

.mobile-menu ul{

    list-style:none;

    margin:0;

    padding:0;}

.mobile-menu li{

    border-bottom:1px solid #eee;}

.mobile-menu a{

    display:block;

    padding:0px;

    color:#333;

    font-size:15px;}

.mobile-menu a:hover{

    color:#004391;}

.has-sub span{

    display:flex;

    justify-content:space-between;

    align-items:center;

    padding:14px 20px;

    cursor:pointer;

    font-size:15px;

    color:#333;}

.has-sub em{

    font-style:normal;

    font-size:20px;

    color:#004391;}

.mobile-sub{

    display:none;

    background:#f7f9fc;}

.mobile-sub li{

    border:none;}

.mobile-sub a{

    padding:12px 35px;

    color:#666;

    font-size:14px;}

.has-sub.active .mobile-sub{

    display:block;}

.has-sub.active em{

    transform:rotate(45deg);}
.footer{padding:0px;}