:root {
            --primary: #0d629c;
            --dark: #1a1a1a;
            --light: #ffffff;
            --bg: #cccccc;
            --text: #333333;
        }

        body { font-family: 'Helvetica', 'Arial', sans-serif; background-color: var(--bg); color: var(--text); margin: 0; line-height: 1.6; }
        .clearfix::after { content: ""; clear: both; display: table; }
        
        /* Header & Nav */
        header { background: #fff; padding: 20px; text-align: center; border-bottom: 3px solid var(--primary); }
        .logo-text { font-size: 24px; font-weight: bold; color: var(--primary); text-decoration: none; display: block; margin: 20px 0; }
        nav .menu { list-style: none; padding: 0; display: flex; justify-content: center; gap: 20px; }
        nav a { color: var(--primary); text-decoration: none; font-weight: bold; }

        /* Layout */
        main { max-width: 1000px; margin: 20px auto; background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
        .hero { width: 100%; height: 300px; background: linear-gradient(45deg, #0d629c, #2196f3); display: flex; align-items: center; justify-content: center; color: white; border-radius: 8px; margin-bottom: 20px; }
        
        .item-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
        .item { border: 1px solid #ddd; padding: 10px; border-radius: 4px; }
        .item img { width: 100%; height: 200px; object-fit: cover; display: block; border-radius: 4px; }
        
        footer { text-align: center; padding: 40px; color: #666; font-size: 0.9em; }

        /* Responsive */
        @media (max-width: 768px) {
            .menu { flex-direction: column; }
        }