body{margin:0;font-family:Arial;background:#111827;color:#fff;display:flex;justify-content:center;align-items:center;min-height:100vh}
.card{width:min(92vw,520px);background:#1f2937;padding:24px;border-radius:18px}
video{width:100%;border-radius:12px;margin:16px 0;background:#000}
.btn{display:block;text-align:center;background:#2563eb;color:#fff;padding:14px;border-radius:10px;text-decoration:none;margin:12px 0;font-weight:bold}
.secondary{background:#16a34a}.warning{background:#854d0e;padding:12px;border-radius:8px;margin:10px 0}.ad{margin-top:20px;background:#fff;color:#000;padding:30px;text-align:center;border-radius:10px}