* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }
        header {
            background-color: #2c3e50;
            color: white;
            padding: 1.5rem 2rem;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        header h1 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            margin-right: 1.5rem;
            font-size: 0.95rem;
            transition: color 0.3s;
        }
        nav a:hover {
            color: #3498db;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        section {
            margin-bottom: 3rem;
        }
        section h2 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #2c3e50;
            border-bottom: 2px solid #3498db;
            padding-bottom: 0.5rem;
        }
        section p {
            margin-bottom: 1rem;
            color: #555;
        }
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .product-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        .product-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background-color: #ecf0f1;
        }
        .product-info {
            padding: 1.5rem;
        }
        .product-info h3 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: #2c3e50;
        }
        .product-info p {
            font-size: 0.9rem;
            color: #777;
            margin-bottom: 1rem;
        }
        .product-price {
            font-size: 1.3rem;
            font-weight: bold;
            color: #e74c3c;
            margin-bottom: 1rem;
        }
        .product-button {
            width: 100%;
            padding: 0.75rem;
            background-color: #3498db;
            color: white;
            border: none;
            border-radius: 4px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .product-button:hover {
            background-color: #2980b9;
        }
        footer {
            background-color: #2c3e50;
            color: white;
            padding: 2rem;
            margin-top: 3rem;
            text-align: center;
        }
        footer p {
            margin-bottom: 1rem;
        }
        footer a {
            color: #3498db;
            text-decoration: none;
            margin: 0 1rem;
        }
        footer a:hover {
            text-decoration: underline;
        }
/* ── image safety ── */
img { max-width: 100%; height: auto; display: block; }
img[style*='width:'] { max-width: 100%; }