.header {
    background-color: #FFF;
}

.left-logo-box {
    padding-top: 25px;
    padding-top: 0.25rem;
    box-sizing: border-box;
}

.left-logo {
    display: block;
    height: 50px;
    height: 0.50rem;
    width: auto;
    width: 104px;
    width: 1.04rem;
    object-fit: contain;

}

.nav-box-outer {
    background-color: #FFFFFF;
}

.nav-box {
    background-color: #FFFFFF;
    height: 100px;
    height: 1rem;
}

.nav-box .nav-item {
    color: #666;
    font-size: 28px;
    font-size: 0.28rem;
    line-height: 100px;
    line-height: 1rem;
    text-align: center;
    /*min-width: 150px;*/
    padding: 0 32px;
    padding: 0 0.32rem;
    background-color: #FFFFFF;
    cursor: pointer;
    position: relative;
}

.nav-box .nav-item:hover {
    color: #ff7200;
}

.nav-box .nav-item.current {
    color: #ff7200;
    background-color: #fff;
    font-weight: bold;

}

.nav-box .nav-item.current:after {
    content: "";
    display: block;
    position: absolute;
    bottom: 0;
    width: 50px;
    width: 0.50rem;
    height: 0.04rem;
    background-color: #ff7200;
    left: 50%;
    transform: translateX(-50%);

}


@media only screen and (max-width: 768px) {
    .header {
        position: fixed;
        background-color: #FFFFFF;
        width: 100%;
        top: 0;
        z-index: 99;
    }

    .left-logo-box {
        padding-top: 0.16rem;
        padding-bottom: 0.16rem;
        padding-left: 0.2rem;
    }


    .left-logo {
        height: 0.4rem;
        width: auto;
    }

    .menu-btn {
        display: block;
        position: fixed;
        width: 0.4rem;
        height: 0.72rem;
        right: 0.26rem;
        top: 0rem;
        background: url("../images/bg-menu.png") no-repeat center;
        background-size: 0.4rem 0.4rem;
        z-index: 99;
    }

    .nav-box-outer {
        display: none;
        width: 100vw;
        float: none;
        position: fixed;
        top: 0.72rem;
        background: #FFFFFF;
        left: 0;
        height: auto;
        height: calc(100vh - 0.72rem);

        z-index: 999;
    }

    .nav-box-outer.show {
        display: block;
        z-index: 9;
    }

    .nav-box {
        height: auto;
    }

    .nav-box .nav-item {
        float: none;
        font-size: 0.3rem;
        line-height: 0.8rem;
    }
}