/* Ленивый YouTube-фасад: превью + кнопка, плеер грузится по клику */
.yt-lite{position:relative;display:block;width:100%;height:0;padding-bottom:56.25%;
  background:#000 center/cover no-repeat;cursor:pointer;border-radius:8px;overflow:hidden}
.yt-lite>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:0;display:block}
.yt-lite__play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:68px;height:48px;background:rgba(23,23,23,.75);border-radius:14px;transition:background .2s;z-index:1}
.yt-lite:hover .yt-lite__play{background:#f00}
.yt-lite__play::after{content:"";position:absolute;top:50%;left:50%;
  transform:translate(-40%,-50%);border-style:solid;border-width:11px 0 11px 19px;
  border-color:transparent transparent transparent #fff}
.yt-lite iframe{position:absolute;inset:0;width:100%;height:100%;border:0}