:root {
            --sky: #0ea5e9;
            --electric: #00f2fe;
            --light: #f8fafc;
            --gray: #94a3b8;
            --dark: #020617;
            --glass-border: rgba(255, 255, 255, 0.1);
            --gradient-primary: linear-gradient(135deg, var(--sky), var(--electric));
            --gradient-dark: linear-gradient(135deg, rgba(2, 6, 23, 0.95), rgba(2, 6, 23, 0.85));
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-full: 50%;
            --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 10px 25px rgba(14, 165, 233, 0.15);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.3);
            --transition-fast: 0.3s ease;
            --transition-normal: 0.5s ease;
        }

       
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: var(--gradient-primary);
            color: white;
            border: none;
            border-radius: var(--radius-md);
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 1rem;
            box-shadow: var(--shadow-sm);
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--sky);
            color: var(--sky);
        }

        .btn-outline:hover {
            background: rgba(14, 165, 233, 0.1);
        }

        /* BREADCRUMB */
        .breadcrumb {
            padding: 2rem 0 1rem;
            background: transparent;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.9rem;
        }

        .breadcrumb-nav a {
            color: var(--gray);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .breadcrumb-nav a:hover {
            color: var(--sky);
        }

        .breadcrumb-nav .separator {
            color: var(--gray);
            opacity: 0.5;
        }

        .breadcrumb-nav .current {
            color: var(--sky);
            font-weight: 600;
        }

        /* PRODUCT HERO */
        .product-hero {
            padding: 2rem 0 4rem;
        }

        .product-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
        }

        .product-images {
            position: sticky;
            top: 2rem;
            height: fit-content;
        }

        .main-image {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-lg);
        }

        .main-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }

        .product-badge {
            position: absolute;
            top: 1.5rem;
            left: 1.5rem;
            padding: 8px 16px;
            background: linear-gradient(135deg, #10b981, #06b6d4);
            color: white;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            z-index: 2;
        }

        .image-thumbnails {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        .thumbnail {
            border-radius: var(--radius-md);
            overflow: hidden;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all var(--transition-fast);
        }

        .thumbnail.active {
            border-color: var(--sky);
        }

        .thumbnail:hover {
            transform: translateY(-3px);
        }

        .thumbnail img {
            width: 100%;
            height: 80px;
            object-fit: cover;
            display: block;
        }

        /* PRODUCT INFO */
        .product-info {
            padding: 1rem 0;
            width: 400px;
        }

        .product-category {
            display: inline-block;
            color: var(--sky);
            font-size: 0.875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 1rem;
        }

        .product-title {
            font-family: 'Poppins', sans-serif;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--light);
        }

        .product-rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .stars {
            color: #fbbf24;
            display: flex;
            gap: 2px;
        }

        .rating-value {
            font-weight: 600;
            color: var(--light);
        }

        .review-count {
            color: var(--gray);
            font-size: 0.9rem;
        }

        .product-description {
            font-size: 1.125rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 2.5rem;
        }

        .product-highlights {
            margin-bottom: 2.5rem;
        }

        .product-highlights h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--light);
        }

        .product-highlights ul {
            list-style: none;
            padding-left: 0;
        }

        .product-highlights li {
            color: var(--gray);
            margin-bottom: 0.75rem;
            padding-left: 1.5rem;
            position: relative;
        }

        .product-highlights li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--sky);
            font-weight: bold;
        }

        /* PRICING & CTA */
        .pricing-section {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin-bottom: 2rem;
            border: 1px solid var(--glass-border);
        }

        .price-display {
            display: flex;
            align-items: baseline;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .current-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--light);
        }

        .price-period {
            color: var(--gray);
            font-size: 1rem;
        }

        .old-price {
            text-decoration: line-through;
            color: var(--gray);
            font-size: 1.25rem;
            margin-left: 1rem;
        }

        .discount-badge {
            display: inline-block;
            padding: 4px 10px;
            background: linear-gradient(135deg, #f59e0b, #f97316);
            color: white;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            margin-left: 1rem;
        }

        .pricing-options {
            margin: 2rem 0;
        }

        .pricing-options h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--light);
        }

        .pricing-tabs {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .pricing-tab {
            flex: 1;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            text-align: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .pricing-tab.active {
            background: rgba(14, 165, 233, 0.1);
            border-color: var(--sky);
        }

        .pricing-tab:hover:not(.active) {
            border-color: var(--sky);
        }

        .tab-period {
            display: block;
            font-weight: 600;
            color: var(--light);
            margin-bottom: 0.25rem;
        }

        .tab-price {
            display: block;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--sky);
        }

        .tab-savings {
            display: block;
            font-size: 0.8rem;
            color: #10b981;
            margin-top: 0.25rem;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
        }

        .cta-buttons .btn {
            flex: 1;
            justify-content: center;
        }

        /* FEATURES SECTION */
        .product-features {
            padding: 6rem 0;
            background: var(--gradient-dark);
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 4rem;
        }

        .section-subtitle {
            display: inline-block;
            color: var(--sky);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
            font-size: 0.875rem;
        }

        .section-title {
            font-family: 'Poppins', sans-serif;
            font-size: clamp(2rem, 4vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--light);
        }

        .section-description {
            font-size: 1.125rem;
            color: var(--gray);
            line-height: 1.8;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            padding: 2.5rem 2rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-normal);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            border-color: var(--sky);
            box-shadow: var(--shadow-md);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            margin-bottom: 1.5rem;
            background: var(--gradient-primary);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: white;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--light);
        }

        .feature-card p {
            color: var(--gray);
            line-height: 1.7;
            font-size: 1rem;
        }

        /* SPECIFICATIONS */
        .product-specifications {
            padding: 6rem 0;
            background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.05) 0%,
                rgba(0, 242, 254, 0.03) 100%);
        }

        .specs-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
        }

        .specs-table th {
            background: rgba(14, 165, 233, 0.1);
            padding: 1.5rem;
            text-align: left;
            font-weight: 600;
            color: var(--light);
            border-bottom: 1px solid var(--glass-border);
        }

        .specs-table td {
            padding: 1.25rem 1.5rem;
            color: var(--gray);
            border-bottom: 1px solid var(--glass-border);
        }

        .specs-table tr:last-child td {
            border-bottom: none;
        }

        .specs-table tr:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .spec-value {
            color: var(--light);
            font-weight: 500;
        }

        /* USE CASES */
        .use-cases {
            padding: 6rem 0;
            background: var(--gradient-dark);
        }

        .use-cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .use-case-card {
            padding: 2.5rem 2rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-normal);
        }

        .use-case-card:hover {
            transform: translateY(-5px);
            border-color: var(--sky);
        }

        .case-icon {
            width: 60px;
            height: 60px;
            margin-bottom: 1.5rem;
            background: rgba(14, 165, 233, 0.1);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--sky);
        }

        .use-case-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--light);
        }

        .use-case-card p {
            color: var(--gray);
            line-height: 1.7;
            font-size: 1rem;
        }

        /* TESTIMONIALS */
        .product-testimonials {
            padding: 6rem 0;
            background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.05) 0%,
                rgba(0, 242, 254, 0.03) 100%);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }

        .testimonial-card {
            padding: 2.5rem 2rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
        }

        .testimonial-text {
            font-size: 1.125rem;
            color: var(--light);
            font-style: italic;
            line-height: 1.8;
            margin-bottom: 2rem;
            position: relative;
        }

        .testimonial-text::before {
            content: '"';
            font-size: 4rem;
            color: var(--sky);
            opacity: 0.3;
            position: absolute;
            top: -20px;
            left: -10px;
            font-family: serif;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--sky);
        }

        .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .author-info h4 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--light);
            margin-bottom: 0.25rem;
        }

        .author-info p {
            color: var(--sky);
            font-size: 0.9rem;
        }

        .author-company {
            color: var(--gray);
            font-size: 0.875rem;
            margin-top: 0.25rem;
        }

        /* COMPARISON */
        .comparison-section {
            padding: 6rem 0;
            background: var(--gradient-dark);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
        }

        .comparison-table th {
            background: rgba(14, 165, 233, 0.1);
            padding: 1.5rem;
            text-align: center;
            font-weight: 600;
            color: var(--light);
            border-bottom: 1px solid var(--glass-border);
        }

        .comparison-table th:first-child {
            text-align: left;
        }

        .comparison-table td {
            padding: 1.25rem 1.5rem;
            color: var(--gray);
            border-bottom: 1px solid var(--glass-border);
            text-align: center;
        }

        .comparison-table td:first-child {
            text-align: left;
            color: var(--light);
            font-weight: 500;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .checkmark {
            color: #10b981;
            font-weight: bold;
        }

        .xmark {
            color: #ef4444;
            font-weight: bold;
        }

        /* FAQ */
        .faq-section {
            padding: 6rem 0;
            background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.05) 0%,
                rgba(0, 242, 254, 0.03) 100%);
        }

        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid var(--glass-border);
            overflow: hidden;
        }

        .faq-question {
            padding: 1.5rem;
            font-weight: 600;
            color: var(--light);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            color: var(--sky);
            transition: transform var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            color: var(--gray);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            padding: 0 1.5rem 1.5rem;
            max-height: 500px;
        }

        /* CTA SECTION */
        .cta-section {
            padding: 8rem 0;
            background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.1) 0%,
                rgba(0, 242, 254, 0.05) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-content {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-family: 'Poppins', sans-serif;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--light);
        }

        .cta-content p {
            font-size: 1.25rem;
            color: var(--gray);
            margin-bottom: 3rem;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* RESPONSIVE DESIGN */
        @media (max-width: 1024px) {
            .product-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .product-images {
                position: static;
            }

            .features-grid,
            .use-cases-grid,
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .pricing-tabs {
                flex-direction: column;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .features-grid,
            .use-cases-grid,
            .testimonials-grid {
                grid-template-columns: 1fr;
            }

            .specs-table,
            .comparison-table {
                display: block;
                overflow-x: auto;
            }

            .image-thumbnails {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .product-title {
                font-size: 2rem;
            }

            .current-price {
                font-size: 2rem;
            }

            .cta-buttons .btn {
                font-size: 0.9rem;
                padding: 12px 20px;
            }

            .section-title {
                font-size: 2rem;
            }
        }