.videos-list {
    margin: 0 -10px;
}
.videos-list .item {
    width: 25%;
    padding: 0 10px;
}
.videos-list .item:nth-child(4n+1) {
    clear: left;
}
.videos-list .box {
    position: relative;
    max-width: 320px;
    margin: 0 auto 25px;
    text-align: center;
}
.videos-list .box .cover{
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 5;
}
.videos-list .box.new:before {
    content: '';
    background: url('../../images/common/videos/new_tag.svg') no-repeat;
    width: 66px;
    height: 33px;
    position: absolute;
    z-index: 10;
    left: 50%;
    top: 0;
    margin-left: -33px;
}
.no-svg .videos-list .box.new:before {
    background-image: url('../../images/common/videos/new_tag.png');
}
.videos-list .pic {
    display: block;
    position: relative;
    overflow: hidden;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.videos-list .pic:before {
    content: '';
    display: block;
    background: url('../../images/common/videos/hover.png') 50% 50% no-repeat rgba(255,255,255,0.9);
    border: 1px solid #f5ae52;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    opacity: 0;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.videos-list .box:hover .pic:before {
    opacity: 1;
}
.videos-list .txt {
    position: relative;
    padding-top: 10px;
}
.videos-list .name {
    color: #000;
    font-size: 18px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    /* position: absolute; */
    /* bottom: 100%; */
    /* left: 10px; */
    /* right: 10px; */
    /* margin-bottom: 14px; */
}
.videos-list .box:hover .name {
    color: #f2951d;
}
.videos-list .description {
    color: #878787;
    font-size: 14px;
    line-height: 1.6;
    text-align: left;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 41px;
}

.videos-intro {
    margin: 0 0 30px;
}
.videos-intro .pic iframe{
    width: 100%;
    height: 480px;
    max-width: 840px;
    margin:auto;
    position:relative;
}
.videos-intro .pic{
    text-align: center;
    padding:0 20px;
    margin-bottom: 10px;
}
.videos-intro .pic .youtubecontent{
    height:auto;
    padding:0px;
}
.videos-intro .videos-name {
    background: url('../../images/common/products/title_bg.png');
    color: #fff;
    font-family: 'Lato','微軟正黑體', '文泉驛正黑', 'WenQuanYi Zen Hei', '儷黑 Pro', 'LiHei Pro',  'Microsoft JhengHei',  '微软雅黑', 'メイリオ', '맑은 고딕', sans-serif;
    font-size: 20px;
    font-weight: normal;
    line-height: 1.3;
    padding: 8px 16px 8px 36px;
    position: relative;
    margin: 0 0 35px;
}
.videos-intro .videos-name:before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #fff;
    position: absolute;
    left: 15px;
    top: 17px;
    -moz-transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}
.gallery {
    max-width: 1214px;
    margin: 0 auto 45px;
}
.stage {
    float: left;
    width: 59.31%;
    max-width: 720px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.thumbnails {
    float: right;
    width: 38.55%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.thumbnails ul {
    margin: -1.5%;
}
.thumbnails li {
    width: 50%;
    padding: 1.5%;
}
.thumbnails li a {
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}
.thumbnails li a:before {
    content: '';
    background: url('../../images/common/videos/small_hover.png') 50% 50% no-repeat rgba(255,255,255,0.9);
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    opacity: 0;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.thumbnails li a:hover:before,
.thumbnails li.active a:before {
    opacity: 1;
}

.videos-detail {
    max-width: 1214px;
    margin: 0 auto;
}

@media screen and (max-width: 1200px) {
    .videos-list {
        margin: 0 -7px;
    }
    .videos-list .item {
        width: 33.33%;
        padding: 0 7px;
    }
    .videos-list .item:nth-child(4n+1) {
        clear: none;
    }
    .videos-list .item:nth-child(3n+1) {
        clear: left;
    }
    .videos-list .box {
        margin-bottom: 40px;
    }
}
@media screen and (max-width: 767px) {
    .videos-list .item {
        width: 50%;
    }
    .videos-list .item:nth-child(3n+1) {
        clear: none;
    }
    .videos-list .item:nth-child(2n+1) {
        clear: left;
    }
    .videos-list .box {
        margin-bottom: 30px;
    }
    .videos-intro .videos-name {
        margin-bottom: 20px;
    }
    .gallery {
        margin-bottom: 30px;
    }
    .stage,
    .thumbnails {
        float: none;
        width: auto;
    }
    .thumbnails ul {
        max-width: none;
        margin: 0 -5px;
    }
    .thumbnails li {
        width: 16.66%;
        padding: 10px 5px 0;
    }
}
@media screen and (max-width: 640px) {
    .videos-intro .pic iframe{
        height: 360px;
    }
}
@media screen and (max-width: 530px) {
    .videos-list .item {
        width: 100%;
    }
    .videos-list .item:nth-child(n) {
        clear: none;
    }
}
@media screen and (max-width: 480px) {
    .thumbnails li {
        width: 33.33%;
    }
}