.video-block {
    width: 100%;
}

.video-block #my-video,
.video-block #video-mask {
    width: 100%;
    height: 56vw;
}

.video-block #my-video {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.video-block .title {
    padding: 2vw 3vw;
    font-size: 4.2vw;
    line-height: 1.4;
}

.video-block .desc {
    padding: 0 3vw;
    line-height: 1.4;
    font-size: 3.2vw;
    color: #999;
    margin-bottom: 3vw;
}

.video-list .item {
    padding: 3vw;
    border-top: 1px solid #e3e5e7;
}

.video-list .item a {
    display: flex;
}

.video-list .item .thumb {
    width: 35vw;
    height: 20vw;
    border-radius: 1vw;
    overflow: hidden;
    margin-right: 2vw;
    position: relative;
}

.video-list .item .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
}

.video-list .item.active .thumb::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    background: rgba(255, 255, 255, .2);
    box-shadow: 0 0 12px rgba(0, 0, 0, .5) inset;
}

.video-list .item.active .thumb::after {
    content: '';
    width: 6vw;
    height: 6vw;
    background: url('../images/play.gif') no-repeat;
    background-size: 100% auto;
    position: absolute;
    bottom: 5%;
    left: 5%;
    z-index: 3;
}

.video-list .item .info {
    width: 0;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.video-list .item .info .title {
    font-size: 3.2vw;
    line-height: 1.4;
    color: #333;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.video-list .item .info .time {
    font-size: 2.8vw;
    color: #999;
}