:root {
        --primary: #005b9a;
        --secondary: #222222;
        --accent: #00a8ff;
        --text: #333;
        --light: #f4f4f4;
    }
    body { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.6; color: var(--text); margin: 0; padding: 0; }
    header { background: #fff; padding: 20px; text-align: center; border-bottom: 2px solid var(--primary); }
    .logo { max-width: 200px; display: block; margin: 0 auto; }
    nav { background: var(--secondary); padding: 10px; }
    nav ul { list-style: none; padding: 0; display: flex; justify-content: center; gap: 20px; margin: 0; }
    nav a { color: #fff; text-decoration: none; font-weight: bold; }
    .hero { background: #000; padding: 60px 20px; text-align: center; color: #fff; background-size: cover; background-position: center; }
    .container { max-width: 1100px; margin: 40px auto; padding: 0 20px; }
    .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
    .card { border: 1px solid #ddd; padding: 20px; transition: 0.3s; }
    .card:hover { box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
    footer { background: var(--secondary); color: #fff; text-align: center; padding: 40px; margin-top: 50px; }
    
    @media (max-width: 768px) {
        nav ul { flex-direction: column; gap: 10px; }
    }