/*------------------------头部导航菜单---------------*/


/* nav--------------------------------------------------------------*/

.headerTop {
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 999;
    box-shadow: none;
}

.nav {
    width: 1280px;
    margin: 0 auto;
    position: relative;
}

.nav .logo {
    float: left;
    margin-top: 22px;
    display: none;
}

.nav .logo_site {
    float: left;
    margin-top: 25px;
    display: block;
}

.nav .lv1_li .lv1_tit,
.lv1_home,
.nav>span {
    color: #fff;
}

.nav .lv1_li .lv1_tit::before,
.lv1_home::before {
    display: none;
}

.nav .lv1_li::after {
    background: #fff;
}

@media screen and ( min-width:1080px) and (max-width:1440px) {
    .nav {
        width: 1000px !important;
    }
    .nav .lv1_ul {
        right: 165px;
    }
    .nav .lv1_li {
        padding: 0 20px;
    }
    .nav>span {
        margin-right: 0px;
    }
    .nav .logo {
        margin-left: 0;
        margin-top: 25px;
    }
    .nav .logo img {
        margin-left: 0;
        width: 135px;
    }
    .nav>span {
        font-size: 18px;
    }
    .nav .lv1_li .lv1_tit,
    .lv1_home {
        font-size: 14px;
    }
    .nav .lv1_li::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: 15px;
        width: 15px;
        height: 2px;
        background-color: #fff;
        transform-origin: center;
        transform: translate(-50%, 0) scaleX(0);
        transition: transform 0.3s ease-in-out;
        border-radius: 2px;
    }
    .nav .lv1_li .lv2_ul .lv2_li .lv2_tit {
        font-size: 12px;
    }
    .nav .lv1_li .lv2_ul {
        margin-left: -70px;
        width: 140px;
    }
}

@media screen and (max-width:768px) {
    .headerTop {
        position: static;
    }
    .nav .logo_site {
        display: none;
    }
    .tel_phone {
        display: block;
    }
    .tel_pc {
        display: none;
    }
    .switch_phone {
        display: block;
    }
    .nav {
        width: 100% !important;
        position: relative;
        height: 1.32rem;
    }
    .nav .lv1_ul,
    .nav .lv1_li .lv1_tit::before,
    .lv1_home::before,
    .nav .lv1_li .lv1_tit::after,
    .lv1_home::after,
    .nav .lv1_li::after {
        display: none;
    }
    .nav .logo {
        margin-top: 0;
        margin-left: 0 !important;
        display: block;
    }
    .nav .logo img {
        width: 2.5rem;
        margin: 0.28rem 0 0 0.5rem;
    }
    .nav .lv1_ul {
        width: 100%;
        background: #16171a;
        height: auto;
        right: 0 !important;
        top: 1.32rem;
        z-index: 9999;
    }
    .nav .lv1_li {
        float: none;
        position: relative;
        height: auto;
        padding: 0;
        width: 100%;
        border-bottom: #2b2b2e 1px solid;
    }
    .nav .lv1_li .lv1_tit,
    .lv1_home {
        display: block;
        color: #fff !important;
        height: 0.8rem;
        line-height: 0.8rem;
        transition: transform 0.3s ease-in-out;
        font-size: 0.2rem;
        padding: 0 0.7rem 0 0.5rem;
        width: 50%;
        font-size: 0.2rem;
    }
    .Has_Children b {
        border: 2px solid #777;
        display: block;
        width: 8px;
        height: 8px;
        margin: auto;
        position: absolute;
        top: 0.3rem;
        margin-top: -4px;
        -webkit-transform: rotate(-45deg);
        transform: rotate(-45deg);
        border-top: none;
        border-right: none;
        right: 20px;
    }
    .Has_Children b.actived {
        top: 20px;
        border-bottom: none;
        border-left: none;
        border-right: 2px solid #777;
        border-top: 2px solid #777;
    }
    .nav .lv1_li .lv2_ul {
        position: static;
        margin-left: 0;
        width: 100%;
        line-height: 0.8rem;
        border-radius: 0;
        padding: 0;
        background: #202124;
        text-align: left;
        height: auto;
    }
    .nav .lv1_li .lv2_ul .lv2_li .lv2_tit {
        font-size: 0.2rem;
        color: #fff;
        border-bottom: 1px solid #2b2b2e;
        display: block;
        padding: 0 0.5rem;
        background: none;
        border-left: none !important;
        border-right: none !important;
    }
    .lv2_ul .lv2_li:nth-child(1) a {
        border-radius: 0;
        border-top: none !important;
    }
    .lv2_ul .lv2_li:last-child a {
        border-radius: 0;
        border-bottom: none !important;
    }
    .lv2_ul .lv2_li .lv2_tit::after,
    .nav .lv1_li .lv1_tit::before,
    .lv1_home::before {
        display: none !important;
    }
}