.section4{width:100%;height:865px;background-size:100% 100%;background-repeat:no-repeat}.page-videos-box{display:flex;width:100%;height:440px;border-radius:12px}.page-videos-box .page-videos-func{display:flex;flex-wrap:wrap;width:380px;gap:20px 0}.page-videos-box .page-videos-func_item{display:flex;align-items:center;position:relative;padding:16px 20px;cursor:pointer;width:380px;height:88px;text-align:left;font-size:20px;font-weight:700;border-radius:12px;color:#ffffff;background:#2a425e}.page-videos-box .page-videos-func_item.active{padding:16px 20px 16px 50px;background:#1A75FB}.page-videos-box .page-videos-func_item.active::before{content:"";position:absolute;left:20px;top:50%;transform:translateY(-50%);width:24px;height:24px;background-size:100% 100%;background-repeat:no-repeat;background-image:url(../images/videos/icon_hv.png)}.page-videos-box .page-videos-func_item:hover{background:#1A75FB}.page-videos-box .page-videos-container{margin-right:40px;width:780px;height:440px;background:#000000}.page-videos-box .page-videos-container .page-videos-cont{display:none;position:relative;margin-right:40px;width:780px;height:440px;background:#000000}.page-videos-box .page-videos-container .page-videos-cont_btn{cursor:pointer;position:absolute;left:50%;top:50%;transform:translate(-50%, -50%);width:80px;height:80px;background-size:100% 100%;background-repeat:no-repeat;background-image:url(../images/videos/icon_video_df.png)}.page-videos-box .page-videos-container .page-videos-cont_btn:hover{background-image:url(../images/videos/icon_video_hv.png)}.page-videos-box .page-videos-container .page-videos-cont1{display:block}.page-mVideos-box{display:none}@media screen and (max-width:750px){.section4{height:8.5rem}.page-videos-box{display:none}.page-mVideos-box{position:relative;display:block;width:7.2rem;height:4.85rem}.page-mVideos-box .videos-container{position:relative}.page-mVideos-box .videos-container .videos-swiper{width:7.2rem;height:4.85rem;overflow:hidden}.page-mVideos-box .videos-container .videos-swiper__content .videos-slide-box{width:6.6rem;height:4.85rem}.page-mVideos-box .videos-container .videos-swiper__content .videos-slide-box .videos-cover{position:relative;width:6.6rem;height:3.72rem;background-size:100% 100%;background-repeat:no-repeat}.page-mVideos-box .videos-container .videos-swiper__content .videos-slide-box .videos-cover .videos-replay-btn{position:absolute;top:50%;left:50%;transform:translate(-50%, -50%);width:.8rem;height:.8rem;background-size:100% 100%;background-repeat:no-repeat;background-image:url(../images/videos/icon_video_df.png)}.page-mVideos-box .videos-container .videos-swiper__content .videos-slide-box .videos-desc{display:flex;align-items:center;justify-content:center;width:6.6rem;height:1.12rem;font-size:.28rem;color:#FFFFFF;background:#2a425e;border-radius:0 0 .16rem .16rem}.page-mVideos-box .videos-pagination{display:block;left:50%;top:inherit;bottom:-0.6rem;transform:translateX(-50%);text-align:center}.page-mVideos-box .videos-pagination .swiper-pagination-bullet{margin:0 .06rem;background:#ffffff}.page-mVideos-box .videos-pagination .swiper-pagination-bullet-active{width:.4rem;height:.12rem;border-radius:.08rem}}