body {
    font: 14px/2em 'Microsoft YaHei', sans-serif;
    color: #333;
}

a {
    color: #333;
}

.top_nav {
    clear: both;
    width: 100%;
    height: 80px;
    background-color: #10589a;
}

.top_nav div {
    width: 83vw;
    min-width: 1056px;
    box-sizing: border-box;
    margin: 0 auto;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.top_nav ul {
    display: flex;
    justify-content: flex-end;
    flex-wrap: nowrap;
    position: relative;
}

.top_nav li {
    font-size: 20px;
    color: #fff;
    padding: 0 .2rem;
    line-height: 80px;
    font-weight: bold;
    position: relative;
    display: flex;
    align-items: stretch;
    white-space: nowrap;
}

.top_nav li a {
    color: #fff;
    text-decoration: none;
}

.top_nav li.en {
    padding: 0;
}

.top_nav li.en span {
    padding: 0 0 0 .2rem;
    position: relative;
    border-left: .01rem solid #fff;
}

.top_nav .goEn {
    margin-top: 29px;
}

.top_nav li.en img {}

.top_nav li.search a{display:flex;align-items:center}

.top_nav li.search img{width:25px}

.top_nav .underLine {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: .07rem;
    background-color: #E4494E;
    transition: all .6s;
}

@media screen and (max-device-width: 1920px) {
    .top_nav li {
        font-size: 16px;
    }
}

@media screen and (max-device-width: 1440px) {
    .top_nav li {
        font-size: 14px;
        padding: 0 .1rem;
    }
}

@media screen and (max-device-width: 1280px) {
    .logo {
        width: 85%;
    }
}

@media screen and (max-device-width: 1024px) {
    .top_nav div {
        min-width: auto;
        width: 96vw;
    }
}