:root{--bg:#0f172a;--card:#0b1220;--accent:#7c3aed;--muted:#94a3b8}*{box-sizing:border-box}body,html,#root{height:100%;margin:0}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,var(--bg),#020617);color:#e6eef8}.container{padding:24px}.card{background:linear-gradient(180deg,#ffffff08,#ffffff03);padding:36px;border-radius:12px;max-width:520px;text-align:center;box-shadow:0 10px 30px #02061799}h1{margin:0 0 8px;font-size:32px}p{color:var(--muted);margin:8px 0}.btn{display:inline-block;margin-top:16px;padding:10px 18px;border-radius:8px;background:var(--accent);color:#fff;text-decoration:none}