body{font-family:Arial;background:#071122;color:#e6eef6;margin:0}.header{padding:12px;background:#071d2b;color:#fff}.container{max-width:1100px;margin:20px auto}.card{background:#0b1722;padding:12px;border-radius:8px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.btn{background:#1d9bf0;color:#fff;padding:8px;border-radius:6px}