:root {
            --primary: #005a9c;
            --secondary: #77a464;
            --dark: #002939;
            --light: #f4f4f4;
            --white: #ffffff;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            margin: 0;
            padding: 0;
            color: #333;
            line-height: 1.6;
        }

        header {
            background: var(--white);
            padding: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid var(--primary);
        }

        .logo { height: 60px; }

        nav ul {
            display: flex;
            list-style: none;
            gap: 20px;
            margin: 0;
        }

        nav a {
            text-decoration: none;
            color: var(--primary);
            font-weight: bold;
            font-size: 0.9rem;
        }

        .hero {
            background: var(--dark);
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
            flex-direction: column;
        }

        .hero h1 { font-size: 3rem; margin: 0; }

        .container {
            max-width: 1100px;
            margin: 2rem auto;
            padding: 0 1rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .card {
            border: 1px solid #ddd;
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s;
        }

        .card:hover { transform: translateY(-5px); }

        .card img {
            width: 100%;
            height: 250px;
            object-fit: cover;
        }

        .card-content { padding: 1rem; }

        footer {
            background: var(--primary);
            color: white;
            padding: 2rem;
            text-align: center;
            margin-top: 3rem;
        }

        @media (max-width: 768px) {
            nav ul { flex-direction: column; align-items: center; }
            .hero { height: 250px; }
        }