.video_main {
    padding-top: var(--pd120)
}

.video_main .desc {
    font-weight: 400;
    font-size: 16px;
    color: #666666;
    line-height: 30px;
    margin-top: 27px
}

.video_main .lists {
    --pd: 31px;
    --mt: 32px;
    margin-top: 32px
}

.video_main .lists .item {
    padding: 44px 37px;
    background: #ffffff;
    border-radius: 16px 16px 16px 16px
}

.video_main .lists .item:hover .img .mark {
    opacity: 1;
    visibility: visible
}

.video_main .lists .item .img {
    padding-bottom: 78%;
    border-radius: 12px 12px 12px 12px;
    z-index: 1
}

.video_main .lists .item .img .mark {
    background: rgba(0, 0, 0, 0.3);
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease
}

.video_main .lists .item .img .v_play {
    z-index: 3
}

.video_main .lists .item .title {
    font-family: Open Sans;
    font-weight: bold;
    font-size: 20px;
    color: #333333;
    margin-top: 19px
}

@media screen and (max-width:1366px) {

    .v_play {
        --v-wh: 80px
    }
}

@media screen and (max-width:950px) {
    .video_main .lists .item .title {
        font-size: 18px
    }
}