:root {
            --primary: #0056b3;
            --secondary: #007bff;
            --dark: #011e31;
            --light: #f4f7f9;
            --text: #333;
        }

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

        header {
            background: var(--dark);
            color: white;
            padding: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo-img {
            max-height: 60px;
        }

        nav a {
            color: white;
            text-decoration: none;
            margin-left: 1rem;
            font-weight: bold;
        }

        .hero {
            background-image: 
                linear-gradient(rgba(1, 30, 49, 0.7), rgba(1, 30, 49, 0.7)),
                url('/assets/167803-556035.jpg');
            background-size: cover;
            background-position: center;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
            padding: 2rem;
        }

        .container {
            max-width: 1100px;
            margin: auto;
            padding: 2rem;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .card {
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 1rem;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .card img {
            width: 100%;
            border-radius: 4px;
            margin-bottom: 1rem;
        }

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

        @media (max-width: 768px) {
            header { flex-direction: column; gap: 1rem; }
            nav { display: flex; flex-wrap: wrap; justify-content: center; }
        }