@media screen and (min-width: 856px) {

    .header {
        position: absolute;
        width: 100%;
        height: 74px;
        top: 0;
        left: 0;
        z-index: 3;
        min-width: 1280px;
        display: flex;
        padding-left: 10%;
        justify-content: left;
        align-items: center;
        box-sizing: border-box;
        background: #ffffff;
    }

    .header .logo {
        width: 166px;
        height: auto;
        padding-left: 10px;
        object-fit: contain;
    }

    .header .logo1 {
        display: block;
    }

    .header .logo2 {
        display: none;
    }

    .header .nav-box {
        min-width: 540px;
        height: 100%;
        margin: 0 10px;
        display: flex;
    }

    .header .nav-box .nav_block {
        position: relative;
        width: max-content;
        padding: 0 20px;
        line-height: 74px;
        text-align: center;
        font-size: 13px;
        color: #747d80;
    }

    .header:hover .nav-box .nav_block:hover {
        color: #FFB73A;
    }

    .header .nav-box .nav_block .block {
        width: max-content;
        position: absolute;
        left: 50%;
        top: 74px;
        background: #337ab7;
        color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
        transform: translate(-50%, -10px);
        opacity: 0;
        height: 0;
        overflow: hidden;
        /* transition: all 0.4s ease 0s; */
    }

    .header .nav-box .nav_block:hover .block {
        padding: 2px 0;
        height: max-content;
        border-top: 4px solid #fbc500;
        opacity: 1;
        transform: translate(-50%, -4px);
    }

    .header .nav_block .nav_unit {
        width: 100%;
        height: max-content;
        line-height: 38px;
        display: block;
        font-size: 14px;
        cursor: pointer;
        position: relative;
    }

    .header .nav_block .nav_unit .clickbox {
        position: absolute;
        width: 100%;
        height: 100%;
        left: 0;
        top: 0;
    }

    .header .nav_block .nav_unit:hover {
        background-color: #1D98E6;
    }

    .header .nav_block .nav_unit .unit_txt {
        padding: 2px 15px;
        margin: 0;
        display: flex;
        justify-content: left;
        align-items: center;
    }

    .header .nav_block .unit_image {
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
    }

    /* nav_contact */
    .nav_contact {
        width: 210px;
        height: 28px;
        border-radius: 5px;
        padding-left: 8px;
        margin-left: 34px;
        margin-right: 10px;
    }

    .nav_contact .phoneCall {
        height: auto;
        background: #006ab9;
        line-height: 28px;
        width: 123px;
        border-top-left-radius: 4px;
        border-bottom-left-radius: 4px;
    }

    .nav_contact .phoneCall img {
        width: 16px;
        height: 16px;
        margin: 0 3px;
    }

    .nav_contact .phoneCall .phoneCall_info {
        width: max-content;
        line-height: 12px;
        color: #fff;
        vertical-align: middle;
        font-size: 13px;
    }

    .nav_contact .phoneCall .phoneCall_info:hover {
        text-decoration: underline;
        cursor: pointer;
    }

    .online_service {
        height: 100%;
        background: #fbc300;
        width: 30px;
        cursor: pointer;
    }

    .weibo {
        width: 30px;
        height: 100%;
        background: #f0f0f0;
        cursor: pointer;
    }

    .weibo .wb-img2 {
        display: none;
    }

    .weibo:hover {
        background-color: #CD2707;
    }

    .weibo:hover .wb-img1 {
        display: none;
    }

    .weibo:hover .wb-img2 {
        display: block;
    }

    .weixin {
        width: auto;
        height: 100%;
        background: #f0f0f0;
        border-bottom-right-radius: 4px;
        border-top-right-radius: 4px;
        position: relative;
    }

    .weixin .wx-img2 {
        display: none;
    }

    .weixin:hover .wx-img1 {
        display: none;
    }

    .weixin:hover .wx-img2 {
        display: block;
    }

    .qrCode_container {
        position: absolute;
        top: 40px;
        left: -45px;
        display: none;
    }

    .weixin:hover .qrCode_container {
        display: block;
    }

    .popup_container {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 380px;
        height: max-content;
        background: #fff;
    }

    #popup_title .title_logo {
        width: 51px;
        height: 50px;
        background: url(https://resource.rcclchina.com.cn/Home/pop_logo.png);
        margin: 0px auto;
    }

    #popup_content {
        padding: 3em 1.75em 1em;
        margin: 0em;
        font-family: Arial, sans-serif;
        font-size: 12px;
        background: #FFF;
        color: #000;
    }

    #popup_message {
        width: 100%;
        text-align: center;
        margin: 0px auto;
        padding: 0px 0px 20px;
    }

    #popup_panel {
        text-align: center;
        margin: 16px auto;
        text-align: center;
        height: 30px;
        width: auto;
    }

    #popup_panel #popup_ok {
        font-size: 14px;
        font-weight: bold;
        width: 100px;
        height: 30px;
        background: url(https://resource.rcclchina.com.cn/content/taste/ships/QN/1-18.png);
        margin-right: 6px;
        text-align: center;
        line-height: 30px;
        color: #041555;
        display: inline-block;
        cursor: pointer;
    }

    .needLogin {
        margin-left: 50px;
        line-height: 74px;
        cursor: pointer;
        flex: 1;
        /* text-align: right; */
        /* padding-right: 10%; */
    }

    .needLogin a {
        text-decoration: none;
        font-size: 14px;
        color: #006ab9;
    }

    .needLogin a:hover {
        text-decoration: underline;
    }
}