.header {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    left: 0;
    z-index: 9980;
}

.main-nav {
    position: relative;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    z-index: 9980;
    width: 100%;
    background-color: #389ee6;
}

.top-nav-wrap, .sub-nav-wrap {
    position: relative;
    z-index: 128;
    background-color: #389ee6;
    padding: 0 0.15rem;
}

.top-nav-contain {
    position: relative;
    z-index: 100;
}

.top-nav-contain::before, .top-nav-contain::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    height: 0.4rem;
    width: 0.2rem;
    z-index: 100;
    border-left: 0.04rem solid #389ee6;
    background: -webkit-linear-gradient(left, #389ee6 0, rgba(56, 158, 230, 0) 100%);
    background: linear-gradient(to right, #389ee6 0, rgba(56, 158, 230, 0) 100%);
    pointer-events: none;
    -webkit-transition: .25s;
    transition: .25s;
}

.top-nav-contain::before {
    left: -0.01rem;
}

.top-nav-contain::after {
    right: 0.13rem;
    background: -webkit-linear-gradient(left, rgba(56, 158, 230, 0) 0, #389ee6 100%);
    background: linear-gradient(to right, rgba(56, 158, 230, 0) 0, #389ee6 100%);
    border-left: 0;
    border-right: 0.04rem solid #389ee6;
}

.top-nav-scroll-wrap {
    height: 0.42rem;
    line-height: 0.42rem;
}

.top-nav-scroll-wrap.has-sub::before {
    content: " ";
    position: absolute;
    bottom: 0;
    height: 0;
    width: 100%;
    z-index: 111;
    border-bottom: 1px solid #1c598f;
}

.top-nav-list, .sub-nav-list {
    position: relative;
    overflow-x: scroll;
    overflow-y: hidden;
    color: #fff;
    font-size: 0;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    text-align: center;
    height: 100%;
}

.top-nav-list {
    padding: 0 0.15rem;
}

.top-nav-item {
    position: relative;
    display: inline-block;
    padding: 0 0.08rem;
    font-size: 0.16rem;
    text-align: center;
    opacity: 0.7;
    color: #fff;
}

.top-nav-item:last-child {
    padding-right: 0.1rem;
}

.top-nav-item:hover {
    color: #fff;
    text-decoration: none;
}

.top-nav-item.current {
    opacity: 1;
}

.top-nav-item-box {
    position: relative;
    margin: 0 auto;
    overflow: hidden;
    -webkit-transition: -webkit-transform .25s;
    transition: transform .25s;
    background-color: #389ee6;;
}

.top-nav-item.current .top-nav-item-box {
    -webkit-transform: scale(1.125);
    -ms-transform: scale(1.125);
    transform: scale(1.125);
}

.top-nav-item.has-sub.current::after {
    content: " ";
    display: block;
    position: absolute;
    height: 8px;
    width: 8px;
    bottom: -5px;
    left: 50%;
    margin-left: -2px;
    border-left: 1px solid #1c598f;
    border-top: 1px solid #1c598f;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
    z-index: 1111;
    background: #389ee6;
}

.top-nav-expand-btn {
    position: absolute;
    top: 0;
    right: 0;
    width: 0.38rem;
    height: 0.41rem;
    background: #389ee6 url(../img/arrow_big_common@2x.png) center no-repeat;
    background-size: 0.11rem;
    z-index: 9999;
}

.sub-nav-wrap {
    display: none;
    height: 0.4rem;
    line-height: 0.4rem;
    overflow: hidden;
}

.sub-nav-contain {
    display: none;
}

.sub-nav-item {
    display: inline-block;
    opacity: 0.7;
    height: 0.4rem;
    line-height: 0.4rem;
}

.sub-nav-item.current {
    opacity: 1;
}

.sub-nav-item > a {
    font-size: 0.14rem;
    display: inline-block;
    padding: 0 0.09rem;
    color: #fff;
}

.sub-nav-item > a:hover {
    color: #fff;
    text-decoration: none;
}

.sub-nav-item:not(:first-child)::before {
    content: "/";
    display: inline-block;
    font-size: 0.15rem;
    color: #286090;
}