:root{--bg:#0b1020;--surface:#121a33;--border:#2a3555;--text:#e8eefc;--muted:#98a8c7;--accent:#4f7cff;--success:#22c55e;--danger:#ff7a7a;--radius:12px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:var(--bg);color:var(--text)}.checkout{max-width:720px;margin:0 auto;padding:2rem 1rem 4rem}.steps{display:flex;gap:.5rem;margin-bottom:2rem;flex-wrap:wrap}.step-pill{padding:.35rem .75rem;border-radius:999px;font-size:.75rem;border:1px solid var(--border);color:var(--muted)}.step-pill.active{background:var(--accent);border-color:var(--accent);color:#fff}.step-pill.done{border-color:var(--success);color:var(--success)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:1rem}input,select,textarea{width:100%;padding:.65rem .75rem;margin-top:.35rem;border-radius:8px;border:1px solid var(--border);background:#0f1528;color:var(--text)}.btn{padding:.75rem 1rem;border:0;border-radius:8px;font-weight:600;cursor:pointer;color:#fff;background:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-success{background:var(--success)}.error{color:var(--danger);margin-bottom:1rem}.wallet-box{background:#0a0f1c;border:1px dashed var(--border);border-radius:8px;padding:1rem;word-break:break-all;font-family:ui-monospace,monospace;font-size:.85rem}.countdown{text-align:center;padding:3rem 1rem}.countdown-num{font-size:4rem;font-weight:700;color:var(--accent)}.poll-status{font-size:.85rem;color:var(--muted);margin-top:.75rem}