:root {
        --primary: #003366;
        --accent: #10a100;
        --dark: #262626;
        --light: #f4f4f4;
        --white: #ffffff;
    }
    body { font-family: Arial, sans-serif; margin: 0; color: var(--dark); line-height: 1.6; }
    header, footer { background: var(--white); padding: 1rem; border-bottom: 2px solid var(--light); }
    .wrapper { max-width: 1200px; margin: auto; padding: 0 1rem; }
    .page-header { display: flex; justify-content: space-between; align-items: center; }
    .logo-box { font-weight: bold; font-size: 24px; color: var(--primary); text-decoration: none; }
    .nav-primary { display: flex; list-style: none; gap: 15px; padding: 0; }
    .nav-primary a { text-decoration: none; color: var(--dark); font-weight: bold; }
    .products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; list-style: none; padding: 0; }
    .item { border: 1px solid #eee; padding: 10px; text-align: center; }
    .product-image { display: flex; align-items: center; justify-content: center; height: 200px; background: #eee; color: #888; text-decoration: none; font-size: 12px; }
    .product-name { display: block; margin: 10px 0; font-weight: bold; font-size: 0.9rem; height: 3em; overflow: hidden; }
    .price { color: var(--accent); font-weight: bold; }
    .btn-cart { background: var(--primary); color: white; border: none; padding: 8px 15px; cursor: pointer; width: 100%; }
    footer { text-align: center; margin-top: 40px; border-top: 1px solid #ddd; padding: 2rem; }

    @media (min-width: 768px) { .products-grid { grid-template-columns: repeat(4, 1fr); } }