body{margin:0;font-family:Arial,sans-serif;background:#f4f6f8;color:#333}header{background:#003b6f;color:#fff}nav{max-width:1200px;margin:auto;display:flex;flex-wrap:wrap;gap:18px;padding:15px}nav a{color:#fff;text-decoration:none;font-weight:bold}.hero{padding:80px 20px;text-align:center;background:linear-gradient(rgba(0,59,111,.6),rgba(0,59,111,.6)),url('https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=1600&q=80') center/cover;color:#fff}.container{max-width:1200px;margin:auto;padding:25px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.card{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.1)}footer{background:#003b6f;color:#fff;text-align:center;padding:20px;margin-top:30px}.notice{border-left:5px solid #d4a017;padding:12px;background:#fff}.placeholder{background:#fff3cd;padding:10px;border-radius:6px}h1,h2{color:#003b6f}