.main {
    overflow: hidden;
}

.banner {
    width: 100%;
    position: relative;
}

.banner img {
    width: 100%;
}

.banner-des {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    padding-bottom: 6.094vw;
}

.banner-title {
    font-size: 2.5vw;
    font-family: SourceHanSansCN;
    font-weight: 300;
    color: #FFFFFF;
}

.banner-nav-list {
    margin-top: 2.5vw;
    display: flex;
}

.banner-nav {
    font-size: 1.25vw;
    font-family: SourceHanSansCN;
    font-weight: 300;
    color: #FFFFFF;
    margin-right: 3.125vw;
    cursor: pointer;
}

/*  */
video::-webkit-media-controls {
    overflow: hidden !important;
}
video::-webkit-media-controls-enclosure {
    width: calc(100% + 32px);
    margin-left: auto;
}
.video-wrap {
    margin: 0 auto;
    padding: 4.01vw 0 8.854vw 0;
}

.video-title {
    width: 100%;
    margin-bottom: 1vw;
    font-size: 1.875vw;
    font-family: SourceHanSansCN;
    color: #fff;

}

.video-content {
    display: flex;
    flex-wrap: wrap;
}

.video-holder {
    width: 75%;
}

.video-player-holder {
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    background-color: #000;
}

.video-player {
    display: block;
}

.video-list-holder {
    display: flex;
    flex-grow: 1;
    flex-direction: column;
    padding-left: 1vw;
}

.video-groups {
    display: flex;
    flex-wrap: wrap;
}

.video-group {
    width: 46%;
    margin: 0 2% 4%;
    /* margin-right: 1.146vw; */
    padding: 1em 0;
    font-size: 0.838vw;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #fff;
    cursor: pointer;
    border: 0 none;
    border-radius: 3px;
    background-color: #454545;
}

.video-group.active {
    background-color: #b39c72;
    color: #fff;
}

.video-list {
    margin: 1.563vw 0.5vw;
    flex-grow: 1;
    height: auto;
    overflow: auto;
}

.video-list::-webkit-scrollbar-thumb {
    border-radius: 5px;
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, .2);
    background: #bea578;
}

.video-list::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, .2);
    border-radius: 0;
    background: #444;
}

.video-list::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

.video-link {
    font-size: 0.938vw;
    font-family: SourceHanSansCN;
    font-weight: 300;
    color: #666;
    display: flex;
    align-items: center;
    margin-bottom: 1.563vw;
    cursor: pointer;
}

.video-link:before {
    content: '';
    width: 1.302vw;
    height: 1.302vw;
    margin-right: 0.781vw;
}

.video-link.active {
    color: #fff;
}

.video-link.active:before {
    background-image: url(https://res.gwm.com.cn/tank/tanksite/assets/carvideo/images/play-active.png);
}

.des-p {
    font-size: 0.938vw;
    font-family: SourceHanSansCN;
    font-weight: 300;
    color: #999;
    line-height: 1.979vw;
    margin-top: 1vw;
}

.back-to-list {
    font-size: 0.938vw;
    font-family: SourceHanSansCN;
    font-weight: 300;
    color: #fff;
    padding: 1em 0;
    text-align: center;
    border-radius: 3px;
    background-color: #b39c72;
}



/*  */
@media only screen and (max-width: 768px) {
    .banner-des {
        width: 100%;
        padding: 6vw 5.333vw;
        padding-bottom: 14.933vw;
    }

    .banner-title {
        font-size: 6.4vw;
        font-family: SourceHanSansCN;
        font-weight: 300;
        color: #fff;
    }

    .video-wrap {
        flex-direction: column;
        padding: 8.667vw 5.333vw 15.333vw 5.333vw;
    }

    .video-title {
        width: 100%;
        font-size: 4.8vw;
        margin-bottom: 4vw;
    }

    .video-content {
        flex-direction: column;
    }

    .video-holder {
        width: 100%;
        order: 1;
    }

    .video-list-holder {
        padding: 0;
        height: auto !important;
        order: 3;
    }

    .video-groups,
    .video-list {
        display: none;
    }

    .des-p {
        font-size: 12px;
        line-height: 5.067vw;
        margin-top: 4vw;
        margin-bottom: 8vw;
        text-align: justify;
        order: 2;
    }

    .back-to-list {
        margin-top: 4vw;
        font-size: 14px;
    }
}