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.gc-video-shell{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:18px;overflow:hidden;box-shadow:0 18px 55px #07111f25}
.gc-video-shell iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.gc-watermark{position:absolute;left:4%;top:8%;z-index:3;color:#fff;background:#0007;border:1px solid #ffffff55;border-radius:8px;padding:6px 9px;font-size:11px;font-weight:800;pointer-events:none;animation:gc-wm-move 28s linear infinite}
.video-note{font-size:12px;color:var(--muted);margin-top:10px}
@keyframes gc-wm-move{0%{left:4%;top:8%}24%{left:70%;top:12%}49%{left:65%;top:78%}74%{left:8%;top:76%}100%{left:4%;top:8%}}