:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{margin:0;background:#f7f7f7}.container{max-width:980px;margin:0 auto;padding:24px}.card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 8px #0000000f;margin-bottom:16px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}input{padding:10px 12px;border:1px solid #ddd;border-radius:10px;min-width:240px}button{padding:10px 14px;border:0;border-radius:10px;cursor:pointer;background:#111827;color:#fff}button:disabled{opacity:.6;cursor:not-allowed}.muted{color:#6b7280}pre{background:#0b1020;color:#e5e7eb;padding:12px;border-radius:10px;overflow:auto}.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px}.small{font-size:12px}hr{border:0;border-top:1px solid #eee;margin:12px 0}