*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background:#0b1120;color:#f1f5f9}main{max-width:640px;margin:0 auto;padding:80px 24px;text-align:center}h1{font-size:2.5rem;margin-bottom:8px}p.subtitle{color:#94a3b8;margin-bottom:48px}.plans{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.plan{border:1px solid #1e293b;border-radius:12px;padding:24px;width:220px;background:#111827}.plan h2{font-size:1.1rem;margin:0 0 8px}.plan .price{font-size:1.75rem;font-weight:700;margin-bottom:16px}button{width:100%;padding:10px 16px;border-radius:8px;border:none;background:#2563eb;color:#fff;font-size:1rem;cursor:pointer}button:hover{background:#1d4ed8}button:disabled{opacity:.6;cursor:not-allowed}