body{margin:0;background:#0c0c0f;color:#eee;font-family:sans-serif}section{padding:40px 20px;max-width:1200px;margin:auto}.grid{display:grid;grid-gap:20px;gap:20px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.card{background:#111;padding:20px;border-radius:8px}.btn{background:#0070f3;padding:10px 16px;color:#fff;border-radius:6px;text-decoration:none;display:inline-block}