body{font-family:Arial,sans-serif;margin:0}header,footer{background:#111;color:#fff;padding:16px}nav a{color:#d4af37;margin:0 10px;text-decoration:none}.container{max-width:1100px;margin:auto;padding:20px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}.card{border:1px solid #ddd;padding:20px;border-radius:8px}nav a.active{border-bottom:2px solid #d4af37;padding-bottom:4px}