:root {
        --primary-color: #3a86ff;
        --primary-dark: #2563eb;
        --text-color: #333;
        --text-light: #666;
        --background-light: #f8f9fa;
        --faq-bg: #e8f2ff;
        --border-color: #e0e0e0;
        --shadow: 0 4px 12px rgba(0,0,0,0.05);
        --transition: all 0.3s ease;
    }
    
    * { 
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    
    body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        margin: 0;
        background: var(--background-light);
        color: var(--text-color);
        font-size: 16px;
        line-height: 1.6;
    }
    
    .page { 
        display: flex; 
        justify-content: center; 
        padding: 1.5rem 1rem; 
    }
    
    .container {
        max-width: 1100px;
        width: 100%;
        background: #fff;
        border-radius: 12px;
        box-shadow: var(--shadow);
        overflow: hidden;
    }
    
    .hero-section {
        position: relative;
        overflow: hidden;
        text-align: center;
        padding: 2rem;
    }
    
    .hero-image { 
        width: 100%; 
        max-width: 900px;
        height: auto;
        aspect-ratio: 4 / 3;
        display: block;
        margin: 0 auto;
        transition: var(--transition);
        border-radius: 8px;
        box-shadow: var(--shadow);
        cursor: pointer;
    }
    
    .hero-title {
        font-size: 2.2rem;
        margin: 2rem 0 1rem;
        color: var(--primary-dark);
        font-weight: 700;
    }
    
    .intro-section {
        padding: 2rem 2rem 1.5rem;
        background: white;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
    }
    .intro-section h2 {
        font-size: 1.9rem;
        color: var(--primary-dark);
        margin-bottom: 1rem;
        font-weight: 600;
    }
    .intro-section p {
        max-width: 850px;
        margin: 0 auto;
        font-size: 1.05rem;
        color: var(--text-light);
        line-height: 1.7;
    }
    
    .product-showcase-section {
        padding: 3rem 2rem;
        background: white;
    }

    .gallery-container {
        position: relative;
        max-width: 100%;
        margin: 2rem auto;
        overflow: hidden;
    }

    .gallery-slider {
        overflow: hidden;
        position: relative;
    }

    .gallery-track {
        display: flex;
        transition: transform 0.5s ease;
        gap: 1rem;
    }

    .gallery-slide {
        flex: 0 0 calc(33.333% - 1rem);
        min-width: 280px;
    }

    .gallery-image {
        width: 100%;
        height: 300px;
        object-fit: cover;
        border-radius: 8px;
        box-shadow: var(--shadow);
        transition: var(--transition);
        cursor: pointer;
        aspect-ratio: 4 / 3;
    }

    .gallery-image:hover {
        transform: scale(1.05);
    }

    .gallery-nav {
        display: flex;
        justify-content: center;
        gap: 1rem;
        margin-top: 1.5rem;
    }

    .gallery-btn {
        background: var(--primary-color);
        color: white;
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .gallery-btn:hover {
        background: var(--primary-dark);
        transform: scale(1.1);
    }

    .gallery-btn:disabled {
        background: #ccc;
        cursor: not-allowed;
        transform: none;
    }
    
    .specs-section { 
        padding: 3rem 2rem; 
        background: white; 
    }
    
    .specs-table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.5rem 0;
        font-size: 0.95rem;
    }
    
    .specs-table th, .specs-table td {
        padding: 1rem;
        text-align: left;
        border: 1px solid var(--border-color);
    }
    
    .specs-table th {
        background-color: var(--faq-bg);
        font-weight: 600;
    }
    
    .specs-table tr:nth-child(even) {
        background-color: #f9f9f9;
    }
    
    .section-title {
        font-size: 1.8rem;
        text-align: center;
        margin-top: 0;
        margin-bottom: 2rem;
        font-weight: 600;
        color: var(--text-color);
        position: relative;
        padding-bottom: 0.5rem;
    }
    
    .section-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 2px;
    }
    
    .certifications-section {
        padding: 3rem 2rem;
        background: white;
    }
    
    .certs-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        margin-top: 2rem;
    }
    
    .cert-card {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.5rem;
        background: var(--background-light);
        border-radius: 8px;
        border: 1px solid var(--border-color);
        transition: var(--transition);
        cursor: pointer;
    }
    
    .cert-card:hover {
        box-shadow: var(--shadow);
        transform: translateY(-2px);
    }
    
    .cert-icon {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        background: var(--faq-bg);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary-color);
    }
    
    .cert-info h3 {
        font-size: 1.05rem;
        color: var(--primary-dark);
        margin-bottom: 0.3rem;
    }
    
    .cert-info p {
        font-size: 0.9rem;
        color: var(--text-light);
        line-height: 1.5;
    }
    
    .advantages-section {
        padding: 3rem 2rem;
        background: var(--background-light);
    }
    
    .advantages-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
        margin-top: 2rem;
    }
    
    .advantage-item {
        text-align: center;
        padding: 2rem 1.5rem;
        background: white;
        border-radius: 8px;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }
    
    .advantage-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }
    
    .advantage-icon {
        font-size: 2.5rem;
        color: var(--primary-color);
        margin-bottom: 1rem;
    }
    
    .advantage-title {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
        color: var(--primary-dark);
    }
    
    .advantage-description {
        color: var(--text-light);
        font-size: 0.95rem;
    }
    
    .thickness-section {
        padding: 3rem 2rem;
        background: white;
    }
    
    .thickness-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    
    .thickness-item {
        text-align: center;
        padding: 1.5rem;
        border-radius: 8px;
        background: var(--background-light);
        transition: var(--transition);
    }
    
    .thickness-item:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow);
    }
    
    .thickness-value {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }
    
    .thickness-inches {
        font-size: 0.95rem;
        color: var(--text-light);
    }
    
    .texture-colors-section {
        padding: 3rem 2rem;
        background: var(--background-light);
    }
    
    .texture-category {
        margin-bottom: 3rem;
    }
    
    .texture-category-title {
        font-size: 1.5rem;
        text-align: center;
        margin-bottom: 1.5rem;
        color: var(--primary-dark);
        font-weight: 600;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--primary-color);
    }
    
    .texture-colors-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 1.5rem;
        margin-top: 1rem;
    }
    
    .texture-color-item {
        text-align: center;
        transition: var(--transition);
    }
    
    .texture-color-item:hover {
        transform: translateY(-5px);
    }
    
    .texture-color-image {
        width: 120px;
        height: 120px;
        border-radius: 50%;
        object-fit: cover;
        margin: 0 auto 0.8rem;
        border: 3px solid white;
        box-shadow: var(--shadow);
        transition: var(--transition);
        cursor: pointer;
        aspect-ratio: 1 / 1;
    }
    
    .texture-color-image:hover {
        transform: scale(1.05);
        border-color: var(--primary-color);
    }
    
    .texture-color-name {
        font-size: 0.95rem;
        font-weight: 500;
    }
    
    .case-section { 
        padding: 3rem 2rem; 
        background: white; 
        text-align: center;
    }
    
    .case-carousel {
        position: relative;
        max-width: 700px;
        margin: 2rem auto 0;
        overflow: hidden;
    }
    
    .case-slides {
        display: flex;
        transition: transform 0.4s ease;
    }
    
    .case-slide {
        flex: 0 0 100%;
        padding: 1rem;
        box-sizing: border-box;
        text-align: center;
    }
    
    .case-slide img {
        width: 100%;
        max-width: 500px;
        height: 300px;
        object-fit: contain;
        border-radius: 10px;
        margin-bottom: 1.2rem;
        background: var(--background-light);
        cursor: pointer;
    }
    
    .case-slide h3 {
        font-size: 1.15rem;
        color: var(--primary-dark);
        margin-bottom: 0.5rem;
        font-weight: 600;
    }
    
    .case-slide p {
        color: var(--text-light);
        font-size: 0.95rem;
        max-width: 500px;
        margin: 0 auto 1rem;
        line-height: 1.5;
    }
    
    .case-slide a {
        display: inline-block;
        background-color: var(--primary-color);
        color: white;
        padding: 0.6rem 1.5rem;
        border-radius: 20px;
        text-decoration: none;
        font-weight: 600;
        font-size: 0.9rem;
        transition: var(--transition);
    }
    
    .case-slide a:hover {
        background-color: var(--primary-dark);
    }
    
    .case-nav {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 1rem;
        margin-top: 1rem;
    }
    
    .case-arrow {
        background: var(--primary-color);
        color: white;
        border: none;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        cursor: pointer;
        font-size: 1rem;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }
    
    .case-arrow:hover {
        background: var(--primary-dark);
    }
    
    .case-arrow:disabled {
        background: #ccc;
        cursor: not-allowed;
    }
    
    .case-dots {
        display: flex;
        gap: 0.5rem;
    }
    
    .case-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: #ccc;
        border: none;
        cursor: pointer;
        transition: var(--transition);
        padding: 0;
    }
    
    .case-dot.active {
        background: var(--primary-color);
    }
    
    .reviews-section { 
        padding: 3rem 2rem; 
        background: var(--background-light); 
    }
    
    .reviews-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1.5rem;
    }
    
    .review {
        background: #fff; 
        padding: 1.5rem;
        border-radius: 8px;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }
    
    .review:hover {
        transform: translateY(-5px);
    }
    
    .review-text { 
        font-size: 0.95rem; 
        color: var(--text-light); 
        margin-bottom: 0.8rem; 
        position: relative;
        padding-left: 1.5rem;
        text-align: left;
    }
    
    .review-text::before {
        content: "\201C";
        font-size: 3rem;
        color: var(--primary-color);
        position: absolute;
        left: 0;
        top: -0.5rem;
        opacity: 0.3;
    }
    
    .review-author { 
        font-weight: 600; 
        color: var(--primary-color); 
        display: flex;
        align-items: center;
        gap: 0.5rem;
        text-align: left;
    }
    
    .rating {
        color: #ffc107;
        margin-left: auto;
    }
    
    .ueeshop-faq-container {
        width: 100%;
        max-width: 1450px;
        margin: 0 auto;
        background: #fff;
        padding: 30px;
        box-sizing: border-box;
        border-radius: 8px;
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        counter-reset: faq-counter;
    }
    
    .faq-item {
        margin-bottom: 15px;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        overflow: hidden;
        transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        background: #fff;
    }
    
    .faq-item:hover {
        border-color: #3498db;
        box-shadow: 0 3px 10px rgba(52, 152, 219, 0.15);
    }
    
    .faq-question {
        padding: 18px 50px 18px 25px;
        background: #f8fafc;
        cursor: pointer;
        font-weight: 600;
        color: #2c3e50;
        position: relative;
        font-size: 1rem;
        transition: background 0.3s;
    }
    
    .faq-question:hover {
        background: #f0f7fd;
    }
    
    .faq-question::before {
        counter-increment: faq-counter;
        content: counter(faq-counter);
        display: inline-block;
        margin-right: 10px;
        color: #3498db;
        font-weight: bold;
    }
    
    .faq-question::after {
        content: "+";
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
        font-size: 20px;
        color: #7f8c8d;
        transition: all 0.3s;
    }
    
    .faq-item.active .faq-question::after {
        content: "\2212";
        color: #3498db;
    }
    
    .faq-answer {
        padding: 0;
        background: white;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.4s ease;
        line-height: 1.7;
    }
    
    .faq-item.active .faq-answer {
        padding: 20px 25px;
        max-height: 1000px;
        border-top: 1px solid #e0e0e0;
    }
    
    .modal {
        display: none;
        position: fixed;
        z-index: 1000;
        padding-top: 50px;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        overflow: auto;
        background-color: rgba(0,0,0,0.9);
    }
    
    .modal-content {
        margin: auto;
        display: block;
        width: 80%;
        max-width: 700px;
        animation-name: zoom;
        animation-duration: 0.3s;
    }
    
    @keyframes zoom {
        from {transform: scale(0.8)}
        to {transform: scale(1)}
    }
    
    .close {
        position: absolute;
        top: 15px;
        right: 35px;
        color: #f1f1f1;
        font-size: 40px;
        font-weight: bold;
        transition: 0.3s;
        cursor: pointer;
    }
    
    .close:hover,
    .close:focus {
        color: #bbb;
        text-decoration: none;
    }
    
    @media (max-width: 1024px) {
        .advantages-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .thickness-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .texture-colors-grid {
            grid-template-columns: repeat(4, 1fr);
        }
        
        .gallery-slide {
            flex: 0 0 calc(50% - 1rem);
        }
    }
    
    @media (max-width: 768px) {
        body {
            font-size: 15px;
        }
        
        .hero-title {
            font-size: 1.7rem;
        }
        .intro-section h2 {
            font-size: 1.5rem;
        }
        .advantages-grid {
            grid-template-columns: 1fr;
        }
        
        .reviews-container {
            grid-template-columns: 1fr;
        }
        
        .thickness-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .texture-colors-grid {
            grid-template-columns: repeat(3, 1fr);
        }
        
        .specs-table {
            font-size: 0.85rem;
        }
        
        .specs-table th, .specs-table td {
            padding: 0.75rem;
        }
        
        .faq-question {
            font-size: 0.95rem;
            padding: 15px 40px 15px 20px;
        }
        
        .faq-item.active .faq-answer {
            padding: 15px 20px;
        }
        
        .ueeshop-faq-container {
            padding: 20px 15px;
        }
        
        .modal-content {
            width: 95%;
        }
        
        .texture-color-image {
            width: 100px;
            height: 100px;
        }
        
        .gallery-slide {
            flex: 0 0 calc(100% - 1rem);
        }
        
        .gallery-image {
            height: 250px;
        }
        
        .certifications-section .certs-grid {
            grid-template-columns: 1fr;
        }
        
        .case-slide img {
            max-width: 100%;
            height: 220px;
        }
    }

    @media (max-width: 480px) {
        .texture-colors-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .texture-color-image {
            width: 80px;
            height: 80px;
        }
    }