/* Modern CSS Reset & Variables */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --accent: #10b981;
            --cta: #f97316;
            --cta-hover: #ea580c;
            --bg-light: #f8fafc;
            --white: #ffffff;
            --border: #e2e8f0;
            --text-dark: #334155;
            --text-muted: #64748b;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: var(--white);
            line-height: 1.5;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header Navigation */
        .top-navbar {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .nav-logo {
            text-decoration: none;
            color: var(--primary);
            font-weight: 800;
            font-size: 20px;
            display: flex;
            flex-direction: column;
        }

        .nav-logo-sub {
            font-size: 11px;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-weight: 700;
            margin-top: -2px;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 24px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        /* Responsive Navbar for Tablet & Mobile */
        @media (max-width: 1024px) {
            .nav-links {
                display: none; /* Hide navigation links on smaller screens for cleaner UI */
            }
        }

        /* Buttons & CTAs */
        .primary-cta-btn, .secondary-cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            text-decoration: none;
            transition: all 0.2s ease;
            text-align: center;
        }

        .primary-cta-btn {
            background-color: var(--cta);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.2);
        }

        .primary-cta-btn:hover {
            background-color: var(--cta-hover);
            transform: translateY(-2px);
        }

        .secondary-cta-btn {
            background-color: transparent;
            border: 1px solid var(--border);
            color: var(--text-dark);
        }

        .secondary-cta-btn:hover {
            background-color: var(--bg-light);
            border-color: var(--text-muted);
        }

        /* Hero / Showcase Section (Redesigned) */
        .hero-section {
            padding: 60px 0;
            background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        /* Professional Single Hero Image */
        .hero-image-showcase {
            width: 100%;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
            border: 1px solid var(--border);
            background: var(--white);
            display: flex;
        }

        .hero-image-showcase img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }

        /* B2B Conversion Panel */
        .product-info-panel {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .b2b-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .badge-b2b {
            font-size: 11px;
            font-weight: 700;
            padding: 6px 12px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 30px;
            color: var(--text-dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .badge-b2b.factory {
            background: rgba(16, 185, 129, 0.1);
            color: var(--accent);
            border-color: rgba(16, 185, 129, 0.2);
        }

        .product-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
        }

        .b2b-sub-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .b2b-highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .highlight-item {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: 8px;
        }

        .highlight-label {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .highlight-value {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
        }

        .cta-btn-container {
            display: flex;
            gap: 16px;
            margin-top: 8px;
        }

        /* Hero Responsive Breakpoints */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .product-title {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .cta-btn-container {
                flex-direction: column;
            }
            .product-title {
                font-size: 24px;
            }
        }

        /* Certifications Bar */
        .certifications-bar {
            background: var(--primary);
            color: var(--white);
            padding: 20px 0;
            overflow: hidden;
        }

        .cert-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .cert-item {
            font-size: 12px;
            font-weight: 600;
            color: #94a3b8;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        @media (max-width: 768px) {
            .cert-wrapper {
                justify-content: center;
            }
            .cert-item {
                font-size: 11px;
            }
        }

        /* Section Global Typography */
        .section-title {
            font-size: 28px;
            font-weight: 800;
            text-align: center;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 15px;
            text-align: center;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto 50px auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                margin-bottom: 35px;
            }
        }

        /* Technical Features Block */
        #features {
            padding: 80px 0;
            background: var(--white);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 12px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px rgba(15, 23, 42, 0.05);
        }

        .feature-icon-wrapper {
            width: 48px;
            height: 48px;
            background: rgba(16, 185, 129, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .feature-icon-wrapper svg {
            width: 24px;
            height: 24px;
            fill: var(--accent);
        }

        .feature-card h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Factory Production Section */
        .factory-section {
            padding: 80px 0;
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .factory-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 30px 24px;
            border-radius: 12px;
            text-align: center;
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .stat-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 1024px) {
            .factory-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 580px) {
            .factory-stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Target Scenarios Block */
        .scenarios-section {
            padding: 80px 0;
            background: var(--white);
        }

        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-box {
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 8px;
            background: var(--white);
            transition: box-shadow 0.2s ease;
        }

        .scenario-box:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }

        .scenario-box h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .scenario-box p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Detailed Tech Specifications Table */
        .specs-section {
            padding: 80px 0;
            background: var(--bg-light);
            border-top: 1px solid var(--border);
        }

        .table-container {
            width: 100%;
            overflow-x: auto;
            background: var(--white);
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            margin-bottom: 40px;
            -webkit-overflow-scrolling: touch;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        th, td {
            padding: 16px 20px;
            font-size: 14px;
        }

        th {
            background-color: var(--primary-light);
            color: var(--white);
            font-weight: 600;
            text-transform: uppercase;
            font-size: 12px;
            letter-spacing: 0.5px;
        }

        tr {
            border-bottom: 1px solid var(--border);
        }

        tr:last-child {
            border-bottom: none;
        }

        tr:nth-child(even) td {
            background-color: #fafbfc;
        }

        .highlight-col {
            background-color: rgba(16, 185, 129, 0.03);
            font-weight: 700;
            color: var(--accent);
        }

        th.highlight-col {
            background-color: var(--accent);
            color: var(--white);
        }

        /* Customization & Accessories Block */
        .oem-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 30px;
        }

        .oem-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 12px;
        }

        .oem-card h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 15px;
            border-bottom: 2px solid var(--border);
            padding-bottom: 8px;
        }

        .oem-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .oem-list li {
            font-size: 14px;
            color: var(--text-dark);
            position: relative;
            padding-left: 20px;
        }

        .oem-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: 800;
            position: absolute;
            left: 0;
        }

        @media (max-width: 768px) {
            .oem-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0;
            background-color: var(--white);
            border-top: 1px solid var(--border);
        }

        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        details {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 16px;
            transition: background 0.2s ease;
        }

        details[open] {
            background: var(--white);
        }

        summary {
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            color: var(--primary);
            outline: none;
            user-select: none;
        }

        .faq-answer {
            margin-top: 12px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.6;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        /* Contact Action Section */
        .contact-section {
            padding: 80px 0;
            background: var(--primary);
            color: var(--white);
            text-align: center;
        }

        .contact-wrapper {
            max-width: 650px;
            margin: 0 auto;
        }

        .contact-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .contact-subtitle {
            font-size: 15px;
            color: #94a3b8;
            margin-bottom: 35px;
            line-height: 1.6;
        }

        .contact-buttons-stack {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        @media (max-width: 480px) {
            .contact-buttons-stack {
                flex-direction: column;
                gap: 12px;
            }
        }

        .btn-direct {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 16px 30px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.2s ease;
        }

        .btn-email {
            background-color: var(--cta);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }

        .btn-email:hover {
            background-color: #ea580c;
            transform: translateY(-2px);
        }

        .btn-whatsapp {
            background-color: #25d366;
            color: var(--white);
            box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
        }

        .btn-whatsapp:hover {
            background-color: #1e874b;
            transform: translateY(-2px);
        }

        .response-guarantee {
            margin-top: 25px;
            font-size: 13px;
            color: #94a3b8;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }