.AppBtn {
    display: none;
    float: left;
    margin-top: 4px;
}
.AppBtn img {
    width: 32px;
    height: auto;
}
.AppBtn2 {
    display: none;
    float: right;
    margin-right: 15px;
    margin-top: 10px;
}
.AppBtn2 img {
    width: 32px;
    height: auto;
}
.PcBtn {
    display: none;
}
.pcNone {
    display: none!important;
}
.mobileNone {
    display: none;
}
@media (min-width: 768px) {
    .mobileNone {
        display: block;
    }
}
@media (max-width: 767px) {
    .pcNone {
        display: block!important;
    }
    .pcNode {
        display: none;
    }
}
a {
    text-decoration: none;
    color: #212121;
}
a:hover {
    color: #277398;
}

/*  首页头部  */
.top {
    width: 100%;
    height: 138px;
    border-top: 6px solid #2181b0;
    position: relative;
}

.top_main {
    width: 100%;
    height: 100%;
}

.top_left {
    width: 260px;
    height: 138px;
    padding-top: 42px;
    padding-left: 50px;
    box-sizing: border-box;
    color: #2181b0;
    float: left;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 10;
}

.top_left a {
    color: #2181b0;
}

.top_center{
    width: 100%;
    height: 138px;
    margin: 0 auto;
    text-align: center;
    padding-top: 30px;
    box-sizing: border-box;
}

.top_right {
    width: 330px;
    height: 138px;
    position: absolute;
    right: 0;
    top: 0;
    z-index: 10;
    padding-top: 38px;
    box-sizing: border-box;
}

.top_right .other_href_div {
    color: #2181b0;
    text-align: right;
}

.top_right .other_href_div a {
    font-weight: bold;
    color: #2181b0;
    margin-right: 40px;
}
/* top end */

/* nav start */

.nav_wrap {
    width: 100%;
    transition: top 1s;
    position: relative;
    font-size: 30px;
}

.nav_wrap .nav_main{
    height: 70px;
    background: url(./sk_nav_bg_v2022.png);
    position: relative;
    z-index: 2;
}

.nav_box {
    width: 1400px;
    height: 70px;
    margin: 0 auto;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -700px;
    line-height: 70px;
}
.nav_ul{
    float: left;
}

.nav_ul li {
    float: left;
    height: 70px;
    position: relative;
    margin-right: 15px;
}

.nav_ul li a {
    width: 100%;
    color: #FFF;
    display: block;
    box-sizing: border-box;
    line-height: 70px;
    padding: 0 29px;
}

.nav_ul li.index_active a {
    color: #FFF;
}

.nav_ul .nav_zp {
    text-indent: -6px;
}

.nav_ul li a.icon_learn {
    box-sizing: border-box;
}

.nav_ul li a.active {
    content: '';
    height: 76px;
    margin-top: -6px;
    line-height: 80px;
    background-color: #bd0d0d;
    display: block;
}

.nav_more {
    float: right;
    color: #FFF;
    font-size: 20px;
}

.nav_site_pc {
    display: none;
}

.nav_wrap .sub_xktx, .nav_wrap .sub_xktx_2, .nav_wrap .sub_xktx_3{
    height: 50px;
    line-height: 50px;
    margin-top: -50px;
    background: #dfeaf0;
    width: 100%;
    overflow: hidden;
    transition: all 0.6s;
    display: none; 
    box-shadow: 0 0 20px 0 #89b2cf;
}

.nav_wrap .sub_xktx .nav_wrapper, .nav_wrap .sub_xktx_2 .nav_wrapper, .nav_wrap .sub_xktx_3 .nav_wrapper{
    width: 1400px;
    margin: 0 auto;
}

.nav_wrap .sub_xktx a, .nav_wrap .sub_xktx_2 a, .nav_wrap .sub_xktx_3 a{
    color: #124c68;
    margin: 0 30px;
    display: inline-block;
}

.nav_wrap .sub_xktx a:hover, .nav_wrap .sub_xktx_2 a:hover , .nav_wrap .sub_xktx_3 a:hover {
    text-decoration: underline;
}

/* nav end */
/* 保留基础样式 */