:root {
            --primary: #0046ab;
            --accent: #00aeef;
            --dark: #000;
            --light: #f4f4f4;
            --white: #ffffff;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, Helvetica Neue, Helvetica, sans-serif; line-height: 1.6; color: #333; background: var(--light); }
        
        header { background: var(--white); padding: 1rem 5%; display: flex; align-items: center; justify-content: space-between; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        nav a { margin-left: 15px; text-decoration: none; color: var(--primary); font-weight: bold; font-size: 0.9rem; }
        
        .hero { 
            height: 400px; 
            background: url('/assets/bg-landing-page.jpeg') center/cover;
            display: flex; align-items: center; justify-content: center; color: var(--white); text-align: center;
        }
        .hero-overlay { background: rgba(0,0,0,0.5); padding: 2rem; border-radius: 10px; }
        
        .container { max-width: 1200px; margin: 2rem auto; padding: 0 20px; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
        .card { background: var(--white); padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
        .card img { max-width: 100%; border-radius: 4px; margin-bottom: 1rem; }
        
        footer { background: var(--dark); color: var(--white); text-align: center; padding: 2rem; margin-top: 3rem; }
        
        @media (max-width: 768px) {
            header { flex-direction: column; }
            nav { margin-top: 1rem; }
        }