:root {
            --primary: #0073aa;
            --secondary: #0693e3;
            --accent: #f29e1a;
            --text: #333;
            --bg: #f5f5f5;
        }
        body { font-family: 'Open Sans', Arial, sans-serif; line-height: 1.6; color: var(--text); margin: 0; }
        header { background: #fff; border-bottom: 2px solid var(--primary); padding: 1rem 0; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
        .nav { display: flex; list-style: none; padding: 0; gap: 20px; }
        .nav a { text-decoration: none; color: #000; font-weight: 600; }
        .hero { height: 400px; background: #011835; display: flex; align-items: center; justify-content: center; color: #fff; text-align: center; }
        .hero-img { width: 100%; height: 100%; object-fit: cover; opacity: 0.6; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; padding: 40px 0; }
        .card { background: #fff; border: 1px solid #ddd; border-radius: 4px; overflow: hidden; }
        .card-img { width: 100%; height: 200px; background: #eee; display: flex; align-items: center; justify-content: center; }
        .card-body { padding: 15px; }
        footer { background: #000; color: #fff; text-align: center; padding: 20px; margin-top: 40px; }
        @media (max-width: 768px) { .nav { flex-direction: column; } }