*{margin:0;padding:0;box-sizing:border-box}body,html{width:100%;height:100%}body{font-family:system-ui,-apple-system,sans-serif;background:#f5f5f5;color:#333}main{max-width:1200px;margin:0 auto;padding:2rem}h1{font-size:2.5rem;margin-bottom:1rem;color:#000}p{font-size:1.1rem;margin-bottom:2rem;color:#666}pre{background:#fff;padding:1.5rem;border-radius:8px;overflow-x:auto;border:1px solid #ddd;font-size:.9rem}