.video-wrap {
    width: 1280px;
    margin: 0 auto;
}

.video-title-box {
    margin: 44px 0;
}

.video-title-h3 {
    font-size: 36px;
    line-height: 48px;
    margin-bottom: 12px;
    color: #004a9e;
}

.video-title-desc {
    line-height: 36px;
    font-size: 21px;
    color: #6b6b6b;
}

.video-nav {
    background: #eee;
    margin-bottom: 44px;
}

.video-nav ul {
    display: flex;
    margin: 0;
    padding: 0;
}
















.video-nav ul li.en {
    width: 260px;
}

.video-nav ul li.active {
    background: #d01322;
    color: #fff;
}

.video-nav ul li a {
    display: block;
    color: #6b6b6b;
}

.video-nav ul li:hover a {
    color: #fff;
    text-decoration: none;
}

.video-nav ul li:hover {
    background: #d01322;
}

.video-main-list {
    display: flex;
    flex-wrap: wrap;
}

.video-main-list dl {
    margin: 0 42px 0 0;
    width: 288px;
}

.video-main-list dl:nth-child(4n) {
    margin-right: 0;
}

.video-main-list dl dt {
    z-index: 1;
    position: relative;
    width: 288px;
    height: 162px;
}

.video-main-list dl dt img {
    width: 100%;
    height: 100%;
    display: block;
}

.video-main-list dl dt::before {
    content: "";
    display: block;
    height: 162px;
    background-color: rgba(0, 0, 0, 0.25);
    background-image: url('../image/video-icon-play.png');
    background-size: 100px 100px;
    background-repeat: no-repeat;
    background-position: center;
    position: absolute;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.video-main-list dl dd {
    margin: 12px 0 0 0;
    line-height: 28px;
    font-size: 18px;
    color: #6b6b6b;
    height: 96px;
    word-wrap: break-word;
}

.video-mask {
    z-index: 10009;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.5);
}

.video-play {
    width: 864px;
    height: 486px;
    z-index: 10010;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.video-play .wait-video-play {
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.7);
    background-image: url('../image/video-icon-play.png');
    background-repeat: no-repeat;
    background-position: center;
    z-index: 10001;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

@media screen and (max-width: 414px) {
    .video-wrap {
        width: 100%;
    }

    .video-title-box {
        padding: 0 20px;
    }

    .video-nav ul {
        flex-direction: column;
    }

    .video-nav ul li.en {
        width: 100%;
    }

    .video-main-list dl {
        margin: 0 auto !important;
        width: 80%;
    }

    .video-main-list dl dt {
        width: 100%;
        height: auto;
    }

    .video-play {
        width: 100%;
        height: 56.25%;
        z-index: 10010;
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
}


.product-content-wrapper.section-video {
    height: 554px;
    background-color: #000;
}

.product-content-wrapper {
    width: 100%;
    min-width: 1200px;
    position: relative;
    background-position: 50%;
    -moz-background-size: cover;
    -ms-background-size: cover;
    -webkit-background-size: cover;
    -o-background-size: cover;
    overflow: hidden;
}

.product-content-wrapper.section-video video {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -540px;
    margin-left: -960px;
}

.product-content-wrapper.section-video .section-content {
    position: static;
}

.product-content-wrapper .section-content {
    position: relative;
    width: 1200px;
    height: 100%;
    margin: 0 auto;
}

.product-content-wrapper.section-video .section-content .video-mark-tip {
    position: absolute;
    width: 100%;
    top: 214px;
    left: 0;
    font-size: 18px;
    color: #9b9b9e;
    text-align: center;
    letter-spacing: 26px;
    padding-left: 26px;
    box-sizing: border-box;
    z-index: 1;
}

.product-content-wrapper.section-video .section-content .video-mark-btn {
    width: 320px;
    height: 60px;
    position: absolute;
    top: 280px;
    left: 50%;
    margin-left: -160px;
    border: 1px solid #9b9b9e;
    border-radius: 30px;
    text-align: center;
    font-size: 18px;
    color: #9b9b9e;
    line-height: 60px;
    text-indent: 25px;
    letter-spacing: 25px;
    padding: 0 25px;
    box-sizing: border-box;
    z-index: 1;
    cursor: pointer;
}

.product-content-wrapper.section-video .section-content .video-mark-btn .play-btn-img {
    height: 22px;
    width: 22px;
    margin-right: 30px;
    vertical-align: middle;
    display: inline;
}

.product-content-wrapper.section-video .video-mark {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
}

.product-nav {
    background: #FFFFFF;
}

.product-nav ul {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: block;
    background: #fff;
}

.product-nav ul li {
    position: relative;
    float: left;
}

.product-nav ul li.en {
    width: 260px;
}

.product-nav ul li.active {
    background: #d01322;
}

.product-nav ul li.active a {
    color: #fff;
}

.product-nav ul li a {
    font-size: 15px;
    width: 100%;
    padding-top: 0;
    padding-bottom: 0;
    padding-left: 15px;
    padding-right: 15px;
    line-height: 50px;
    color: rgb(0 0 0 / 70%);
    display: block;
    transition: all ease .3s;
    position: relative;
    height: 100%;
    overflow: hidden;
    min-width: 180px;
    text-align: center;
}

.product-nav ul li:hover a {
    color: #fff;
    text-decoration: none;
}

.product-nav ul li:hover {
    background: #d01322;
}

@media screen and (max-width: 768px) {
    .product-nav ul li {
        width: 50%;
    }
}

@media screen and (max-width: 440px) {
    .product-nav ul li {
        width: 100%;
    }
}