:root {
            --primary: #006699;
            --secondary: #004a59;
            --accent: #007cba;
            --text: #333;
            --light: #f4f4f4;
            --white: #ffffff;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; line-height: 1.6; color: var(--text); }
        
        header { background: var(--white); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; border-bottom: 3px solid var(--primary); }
        .logo { width: 200px; height: 60px; background-size: contain; background-repeat: no-repeat; background-position: left center; }
        
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav a { text-decoration: none; color: var(--primary); font-weight: 600; font-size: 0.9rem; }
        
        .hero { height: 400px; background: var(--secondary) url('/assets/conocenos_banner.jpg') center/cover no-repeat; display: flex; align-items: center; justify-content: center; color: white; text-align: center; }
        .hero-content { background: rgba(0,0,0,0.5); padding: 2rem; border-radius: 10px; }

        .container { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
        
        .card { border: 1px solid #ddd; padding: 1rem; border-radius: 8px; transition: transform 0.2s; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        .card img { width: 100%; height: 200px; object-fit: cover; border-radius: 4px; }
        .card h3 { margin: 1rem 0; color: var(--primary); }
        
        footer { background: var(--secondary); color: white; text-align: center; padding: 2rem; margin-top: 3rem; }

        @media (max-width: 768px) {
            nav { display: none; }
            header { flex-direction: column; }
        }