*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#1a1a2e;background:#f8f9fa;line-height:1.6}
header{background:#1a1a2e;padding:1rem 2rem}
header nav a{color:#e0e0e0;text-decoration:none;margin-right:2rem;font-size:.95rem}
header nav a:hover{color:#fff}
main{max-width:900px;margin:3rem auto;padding:0 2rem}
h1{font-size:2rem;margin-bottom:1rem;color:#1a1a2e}
h2{font-size:1.3rem;margin:2rem 0 .5rem;color:#2d3748}
p{margin-bottom:1rem;color:#4a5568}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-top:2rem}
.card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.08)}
.card h3{margin-bottom:.5rem;color:#1a1a2e}
.card a{color:#3182ce;text-decoration:none;font-size:.9rem}
pre{background:#2d3748;color:#e2e8f0;padding:1rem;border-radius:6px;overflow-x:auto;margin:1rem 0}
code{font-family:'Courier New',monospace;font-size:.9rem}
footer{text-align:center;padding:2rem;color:#718096;font-size:.85rem;margin-top:4rem;border-top:1px solid #e2e8f0}