.biz-video-play{height:100vh}.biz-video-play .video-player{width:100vw;height:100vh}.biz-video-play .van-swipe{height:100%}.back-btn{position:fixed;top:calc(env(safe-area-inset-top, 0px) + 12px);left:12px;z-index:9999;width:36px;height:36px;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center;border-radius:50%;background:rgba(0,0,0,.45);color:#fff;font-size:18px}.play-bg{top:0;height:100%;background-color:#000;opacity:.8}.play,.play-bg{position:absolute;left:0;width:100%}.play{opacity:1;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%)}.icon_play{position:absolute;top:50%;left:50%;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);color:#000;font-size:120px;opacity:.8}