body{margin:0;background:#0b1420;color:#e3edf7;font:16px system-ui}main{max-width:1100px;margin:24px auto;padding:20px}video{width:100%;aspect-ratio:16/9;background:#000;border-radius:12px}label{display:block;margin:12px 0}input:not([type=checkbox]){display:block;box-sizing:border-box;width:100%;padding:12px;border:1px solid #53677d;border-radius:6px;background:#172536;color:white}button{padding:12px 24px;margin:12px 8px 12px 0;border:0;border-radius:8px;background:#88dfca;color:#10251f;font:inherit}button:disabled{opacity:.4}p{color:#acc0d4}