:root {
            --primary: #2c5aa0;
            --secondary: #4CAF50;
            --accent: #ff9800;
            --light: #f5f7fa;
            --dark: #333;
            --text: #444;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            color: var(--text);
            line-height: 1.6;
            background-color: #f9f9f9;
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Product Header */
        .product-header {
            background: linear-gradient(135deg, #87CEEB, #1E90FF);
            padding: 60px 0;
            text-align: center;
            color: white;
            margin-bottom: 40px;
        }
        
        .product-code {
            font-size: 1rem;
            margin-bottom: 10px;
            opacity: 0.9;
        }
        
        .product-title {
            font-size: 2.8rem;
            margin-bottom: 15px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        
        .product-subtitle {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
            opacity: 0.95;
        }
        
        /* Product Content */
        .product-content {
            padding: 60px 0;
            background-color: white;
        }
        
        .product-details {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .product-details h2 {
            color: var(--primary);
            margin-bottom: 20px;
            font-size: 1.8rem;
            text-align: center;
        }
        
        .product-overview {
            margin-bottom: 40px;
            text-align: center;
        }
        
        .product-overview p {
            font-size: 1.1rem;
            margin-bottom: 20px;
        }
        
        .product-highlights {
            margin-bottom: 40px;
            background-color: var(--light);
            padding: 30px;
            border-radius: 10px;
            border-left: 5px solid #87CEEB;
        }
        
        .highlight {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .highlight-icon {
            width: 40px;
            height: 40px;
            background-color: #87CEEB;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: white;
            font-weight: bold;
            box-shadow: var(--shadow);
        }
        
        /* Specifications */
        .specifications {
            background-color: #f0f8ff;
            padding: 30px;
            border-radius: 10px;
            margin-bottom: 40px;
        }
        
        .spec-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        
        .spec-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed #ddd;
        }
        
        .spec-label {
            font-weight: 600;
            color: var(--primary);
        }
        
        .spec-value {
            color: var(--dark);
        }
        
        /* Product Features */
        .product-features {
            background-color: var(--light);
            padding: 80px 0;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .feature-card {
            background: white;
            border-radius: 10px;
            padding: 30px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        .feature-icon-large {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: #87CEEB;
        }
        
        .feature-card h3 {
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        /* Custom Notice */
        .custom-notice {
            background: linear-gradient(135deg, #fff8e1, #ffecb3);
            padding: 25px;
            border-radius: 10px;
            margin: 40px 0;
            border-left: 5px solid var(--accent);
        }
        
        .custom-notice h3 {
            color: #e65100;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .custom-notice h3:before {
            content: "🏭";
            margin-right: 10px;
        }
        
        /* Color Preview */
        .color-preview {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin: 30px 0;
        }
        
        .color-item {
            text-align: center;
        }
        
        .color-box {
            width: 80px;
            height: 80px;
            border-radius: 10px;
            margin-bottom: 10px;
            box-shadow: var(--shadow);
        }
        
        .color-sky-blue {
            background-color: #87CEEB;
        }
        
        .color-black {
            background-color: #333;
        }
        
        /* FAQ Section */
        .faq-section {
            background-color: white;
            padding: 80px 0;
        }
        
        .faq-item {
            margin-bottom: 20px;
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
        }
        
        .faq-question {
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-answer {
            color: #666;
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #1a3a6e);
            color: white;
            text-align: center;
            padding: 80px 0;
        }
        
        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }
        
        .cta-section p {
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 30px;
        }
        
        .cta-btn {
            display: inline-block;
            background-color: var(--accent);
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        
        .cta-btn:hover {
            background-color: #e68900;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        
        /* Simple Footer */
        .simple-footer {
            background-color: var(--dark);
            color: white;
            padding: 30px 0;
            text-align: center;
        }
        
        .simple-footer p {
            font-size: 0.9rem;
            color: #aaa;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .spec-grid {
                grid-template-columns: 1fr;
            }
            
            .product-title {
                font-size: 2rem;
            }
            
            .product-details {
                padding: 0 15px;
            }
            
            .color-preview {
                flex-direction: column;
                align-items: center;
                gap: 20px;
            }
        }