.avai-tv{background:#10141c!important;position:relative}
.avai-tv video{display:block;width:100%;height:100%;object-fit:contain;filter:none;pointer-events:none}
.avai-tutorial{position:relative;width:100%;margin:0 0 34px;background:#10141c;border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.25)}
.avai-tutorial video{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#10141c;filter:none}
.avai-tutorial button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:max-content;max-width:90%;padding:20px 32px;border:1px solid #fff;border-radius:999px;background:linear-gradient(90deg,#fff,#38d5ff);color:#03101a;font:800 clamp(18px,2.5vw,28px)/1.2 system-ui;cursor:pointer;box-shadow:0 8px 32px #0008;z-index:3}
.avai-tutorial button[hidden],.avai-video-note[hidden]{display:none}
.avai-video-note{margin:0;padding:12px 18px;color:white;font:400 15px/1.5 system-ui;background:#182533}
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@media(max-width:600px){.avai-tutorial button{padding:14px 20px}.avai-tutorial{border-radius:14px}}
