:root{color-scheme:light dark;font-family:system-ui,sans-serif}
body{margin:0;padding:24px;display:flex;justify-content:center;background:#f7f7f8;color:#222}
main{width:100%;max-width:900px}
h1{font-size:22px;margin:0 0 4px}
.meta{color:#666;font-size:14px;margin:0 0 16px}
video{width:100%;background:#000;border-radius:8px;aspect-ratio:16/9}
.erro{padding:16px;border-radius:8px;background:#fee2e2;color:#991b1b}
@media(prefers-color-scheme:dark){body{background:#171717;color:#f5f5f5}.meta{color:#aaa}}