:root {
            --primary: #003399;
            --dark: #191919;
            --light: #f4f4f4;
            --accent: #660000;
            --text: #333;
        }
        * { box-sizing: border-box; }
        body { font-family: Arial, Helvetica, sans-serif; line-height: 1.6; color: var(--text); margin: 0; padding: 0; background: #fff; }
        header { background: #000; color: #fff; padding: 20px; text-align: center; }
        nav { background: var(--primary); display: flex; flex-wrap: wrap; justify-content: center; }
        nav a { color: #fff; padding: 10px 15px; font-size: 0.9em; text-decoration: none; }
        nav a:hover { background: #0011bb; }
        .hero { position: relative; width: 100%; height: 400px; background: #222; display: flex; align-items: center; justify-content: center; color: white; text-align: center; overflow: hidden; }
        .hero-img { width: 100%; height: 100%; object-fit: cover; opacity: 0.6; }
        .hero-text { position: absolute; z-index: 1; padding: 20px; }
        .container { max-width: 1024px; margin: 40px auto; padding: 0 20px; }
        section { margin-bottom: 40px; }
        h1, h2 { color: var(--primary); }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
        .card { border: 1px solid #ddd; padding: 15px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        footer { background: var(--dark); color: #fff; text-align: center; padding: 20px; margin-top: 50px; }
        @media (max-width: 768px) { nav { flex-direction: column; align-items: center; } }