/* ============================================
           CSS VARIABLES & RESET
           ============================================ */
        :root {
            --primary: #0F172A;
            --primary-light: #1E293B;
            --primary-lighter: #334155;
            --secondary: #F59E0B;
            --secondary-dark: #D97706;
            --secondary-light: #FCD34D;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --text: #334155;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --text-inverse: #F8FAFC;
            --border: #E2E8F0;
            --border-dark: #CBD5E1;
            --shadow-sm: 0 1px 2px rgba(15,23,42,0.05);
            --shadow: 0 1px 3px rgba(15,23,42,0.1), 0 1px 2px rgba(15,23,42,0.06);
            --shadow-md: 0 4px 6px -1px rgba(15,23,42,0.1), 0 2px 4px -1px rgba(15,23,42,0.06);
            --shadow-lg: 0 10px 15px -3px rgba(15,23,42,0.1), 0 4px 6px -2px rgba(15,23,42,0.05);
            --shadow-xl: 0 20px 25px -5px rgba(15,23,42,0.1), 0 10px 10px -5px rgba(15,23,42,0.04);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul, ol { list-style: none; }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button { cursor: pointer; }

        /* ============================================
           TYPOGRAPHY
           ============================================ */
        h1, h2, h3, h4, h5, h6 {
            color: var(--primary);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
        }

        h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
        h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
        h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
        h4 { font-size: 1.125rem; }

        p { line-height: 1.7; }

        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            color: var(--secondary);
            margin-bottom: 0.75rem;
        }

        .section-title {
            margin-bottom: 1rem;
        }

        .section-desc {
            color: var(--text-light);
            max-width: 600px;
            font-size: 1.05rem;
        }

        .section-desc.centered { margin: 0 auto; }

        /* ============================================
           UTILITY / LAYOUT
           ============================================ */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .flex { display: flex; }
        .flex-col { flex-direction: column; }
        .items-center { align-items: center; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        .gap-8 { gap: 8px; }
        .gap-16 { gap: 16px; }
        .gap-24 { gap: 24px; }
        .gap-32 { gap: 32px; }
        .gap-48 { gap: 48px; }

        .text-center { text-align: center; }
        .text-secondary { color: var(--secondary); }

        /* ============================================
           BUTTONS
           ============================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-weight: 600;
            font-size: 0.9375rem;
            border-radius: var(--radius);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--secondary);
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
        }

        .btn-primary:hover {
            background-color: var(--secondary-dark);
            box-shadow: 0 6px 20px rgba(245,158,11,0.45);
            transform: translateY(-2px);
        }

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

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

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

        .btn-outline-dark:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 0.875rem;
        }

        .btn svg {
            width: 18px;
            height: 18px;
            transition: transform var(--transition);
        }

        .btn:hover svg {
            transform: translateX(3px);
        }

        /* ============================================
           HEADER / NAVBAR
           ============================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-accent {
            height: 3px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light), var(--secondary));
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.03em;
            cursor: pointer;
        }

        .logo img {
            height: 56px;
            width: auto;
            object-fit: contain;
            mix-blend-mode: multiply;
            transition: var(--transition);
        }

        .logo:hover img {
            transform: scale(1.05);
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--secondary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 900;
            font-size: 1.1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            padding: 8px 18px;
            font-weight: 500;
            font-size: 0.9375rem;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--bg);
        }

        .nav-link.active {
            color: var(--secondary-dark);
            background: rgba(245,158,11,0.08);
        }

        .nav-cta {
            margin-left: 12px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .hamburger:hover {
            background: var(--bg);
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 2px;
            transition: all 0.35s ease;
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5.5px, -5.5px);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 75px;
            left: 0;
            right: 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            transition: all 0.35s ease;
        }

        .mobile-menu.open {
            display: block;
            transform: translateY(0);
            opacity: 1;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 1rem;
            border-radius: var(--radius);
        }

        .mobile-menu .nav-link:hover,
        .mobile-menu .nav-link.active {
            background: rgba(245,158,11,0.08);
        }

        .mobile-menu .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ============================================
           PAGE SYSTEM
           ============================================ */
        [data-page] {
            display: none;
            animation: pageIn 0.5s ease forwards;
        }

        [data-page].active-page {
            display: block;
        }

        @keyframes pageIn {
            from { opacity: 0; transform: translateY(16px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        /* ============================================
           HERO SECTION
           ============================================ */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--primary);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('../assets/background/hero-bg.png') center/cover no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.78) 50%, rgba(15,23,42,0.65) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 120px 0 80px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245,158,11,0.12);
            border: 1px solid rgba(245,158,11,0.25);
            color: var(--secondary-light);
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.8125rem;
            font-weight: 600;
            margin-bottom: 28px;
            letter-spacing: 0.04em;
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--secondary);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }

        .hero h1 {
            color: var(--text-inverse);
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero h1 .highlight {
            color: var(--secondary);
        }

        .hero-desc {
            color: var(--text-lighter);
            font-size: 1.125rem;
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 560px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid rgba(248,250,252,0.1);
        }

        .hero-stat-value {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--secondary);
        }

        .hero-stat-label {
            font-size: 0.8125rem;
            color: var(--text-lighter);
            margin-top: 2px;
        }

        /* Decorative shapes */
        .hero-decor {
            position: absolute;
            right: -5%;
            top: 50%;
            transform: translateY(-50%);
            width: 500px;
            height: 500px;
            border: 1px solid rgba(245,158,11,0.08);
            border-radius: 50%;
            z-index: 1;
        }

        .hero-decor::before {
            content: '';
            position: absolute;
            inset: 40px;
            border: 1px solid rgba(245,158,11,0.06);
            border-radius: 50%;
        }

        .hero-decor::after {
            content: '';
            position: absolute;
            inset: 80px;
            border: 1px solid rgba(245,158,11,0.04);
            border-radius: 50%;
        }

        /* ============================================
           FEATURES GRID
           ============================================ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--secondary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            background: rgba(245,158,11,0.08);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--secondary);
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--secondary);
            color: var(--primary);
        }

        .feature-icon svg {
            width: 26px;
            height: 26px;
        }

        .feature-card h4 {
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 0.9375rem;
            line-height: 1.65;
        }

        /* ============================================
           POPULAR CATEGORIES
           ============================================ */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            cursor: pointer;
            aspect-ratio: 4/3;
        }

        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .category-card:hover img {
            transform: scale(1.1);
        }

        .category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.2) 60%, transparent 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 28px;
            transition: var(--transition);
        }

        .category-card:hover .category-overlay {
            background: linear-gradient(to top, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.4) 60%, rgba(15,23,42,0.1) 100%);
        }

        .category-overlay h3 {
            color: var(--text-inverse);
            font-size: 1.25rem;
            margin-bottom: 4px;
        }

        .category-overlay p {
            color: var(--text-lighter);
            font-size: 0.875rem;
        }

        .category-arrow {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            background: rgba(245,158,11,0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            opacity: 0;
            transform: translateY(8px);
            transition: all var(--transition);
        }

        .category-card:hover .category-arrow {
            opacity: 1;
            transform: translateY(0);
        }

        /* ============================================
           STATS COUNTER
           ============================================ */
        .stats-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            border: 1px solid rgba(245,158,11,0.06);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 48px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            padding: 24px;
        }

        .stat-value {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-label {
            color: var(--text-lighter);
            font-size: 1rem;
            font-weight: 400;
        }

        .stat-divider {
            width: 40px;
            height: 3px;
            background: rgba(245,158,11,0.3);
            margin: 16px auto 0;
            border-radius: 2px;
        }

        /* ============================================
           PRODUCTS PAGE
           ============================================ */
        .page-header {
            background: var(--primary);
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            border: 1px solid rgba(245,158,11,0.06);
            border-radius: 50%;
        }

        .page-header h1 {
            color: var(--text-inverse);
            margin-bottom: 12px;
        }

        .page-header p {
            color: var(--text-lighter);
            font-size: 1.1rem;
            max-width: 500px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 0.875rem;
        }

        .breadcrumb a {
            color: var(--text-lighter);
        }

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

        .breadcrumb span {
            color: var(--text-lighter);
        }

        .breadcrumb .current {
            color: var(--secondary);
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 32px;
            display: flex;
            align-items: flex-end;
            gap: 20px;
            flex-wrap: wrap;
        }

        .filter-group {
            flex: 1;
            min-width: 180px;
        }

        .filter-group label {
            display: block;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .filter-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--bg);
            color: var(--text);
            font-size: 0.9375rem;
            cursor: pointer;
            transition: var(--transition);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 40px;
        }

        .filter-group select:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
        }

        .filter-reset {
            padding: 12px 24px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            color: var(--text-light);
            font-weight: 500;
            transition: var(--transition);
        }

        .filter-reset:hover {
            border-color: var(--secondary);
            color: var(--secondary);
        }

        /* Product Grid */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .product-card.hidden {
            display: none;
        }

        .product-image {
            height: 220px;
            overflow: hidden;
            background: var(--bg);
        }

        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .product-card:hover .product-image img {
            transform: scale(1.06);
        }

        .product-info {
            padding: 24px;
        }

        .product-category-tag {
            display: inline-block;
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--secondary-dark);
            background: rgba(245,158,11,0.08);
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .product-info h4 {
            margin-bottom: 8px;
            font-size: 1.0625rem;
        }

        .product-info p {
            color: var(--text-light);
            font-size: 0.875rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .product-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        .product-meta span {
            font-size: 0.8125rem;
            color: var(--text-light);
        }

        .product-meta strong {
            color: var(--primary);
            font-weight: 600;
        }

        .no-results {
            grid-column: 1 / -1;
            text-align: center;
            padding: 80px 24px;
            color: var(--text-light);
        }

        .no-results svg {
            width: 64px;
            height: 64px;
            color: var(--text-lighter);
            margin: 0 auto 16px;
        }

        /* ============================================
           ABOUT PAGE
           ============================================ */
        /* Timeline */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 0 48px 60px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            top: 6px;
            width: 16px;
            height: 16px;
            background: var(--secondary);
            border: 3px solid var(--surface);
            border-radius: 50%;
            box-shadow: 0 0 0 3px rgba(245,158,11,0.2);
            z-index: 1;
        }

        .timeline-item:nth-child(odd)::before {
            right: -8px;
        }

        .timeline-item:nth-child(even)::before {
            left: -8px;
        }

        .timeline-year {
            font-size: 0.8125rem;
            font-weight: 700;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 8px;
        }

        .timeline-item h3 {
            font-size: 1.125rem;
            margin-bottom: 8px;
        }

        .timeline-item p {
            color: var(--text-light);
            font-size: 0.9375rem;
            line-height: 1.65;
        }

        /* Manufacturing Process */
        .process-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }

        .process-row:last-child {
            margin-bottom: 0;
        }

        .process-row.reverse {
            flex-direction: row-reverse;
        }

        .process-image {
            flex: 1;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .process-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .process-text {
            flex: 1;
        }

        .process-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--secondary);
            color: var(--primary);
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9375rem;
            margin-bottom: 16px;
        }

        .process-text h3 {
            margin-bottom: 12px;
        }

        .process-text p {
            color: var(--text-light);
            line-height: 1.75;
        }

        /* Certifications */
        .cert-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .cert-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .cert-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--secondary);
        }

        .cert-icon {
            width: 64px;
            height: 64px;
            background: var(--bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--secondary);
        }

        .cert-icon svg {
            width: 28px;
            height: 28px;
        }

        .cert-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .cert-card p {
            font-size: 0.8125rem;
            color: var(--text-light);
        }

        /* ============================================
           CONTACT PAGE
           ============================================ */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .contact-info-card {
            background: var(--primary);
            border-radius: var(--radius-md);
            padding: 40px;
            color: var(--text-inverse);
        }

        .contact-info-card h3 {
            color: var(--text-inverse);
            margin-bottom: 8px;
        }

        .contact-info-card > p {
            color: var(--text-lighter);
            font-size: 0.9375rem;
            margin-bottom: 32px;
        }

        .contact-detail {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 28px;
        }

        .contact-detail:last-of-type {
            margin-bottom: 36px;
        }

        .contact-detail-icon {
            width: 44px;
            height: 44px;
            background: rgba(245,158,11,0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            flex-shrink: 0;
        }

        .contact-detail-icon svg {
            width: 20px;
            height: 20px;
        }

        .contact-detail h4 {
            color: var(--text-inverse);
            font-size: 0.9375rem;
            margin-bottom: 4px;
        }

        .contact-detail p {
            color: var(--text-lighter);
            font-size: 0.875rem;
            line-height: 1.6;
        }

        .map-container {
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 220px;
            background: var(--primary-light);
            position: relative;
        }

        .map-container iframe {
            width: 100%;
            height: 100%;
            border: 0;
            filter: grayscale(0.8) contrast(1.1);
        }

        .map-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: var(--text-lighter);
        }

        .map-placeholder svg {
            width: 40px;
            height: 40px;
            color: var(--secondary);
        }

        /* Contact Form */
        .contact-form-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 40px;
        }

        .contact-form-card h3 {
            margin-bottom: 8px;
        }

        .contact-form-card > p {
            color: var(--text-light);
            font-size: 0.9375rem;
            margin-bottom: 32px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .form-group label .required {
            color: #EF4444;
        }

        .form-input,
        .form-textarea {
            width: 100%;
            padding: 13px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--bg);
            color: var(--text);
            font-size: 0.9375rem;
            transition: all var(--transition);
        }

        .form-input:focus,
        .form-textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
            background: var(--surface);
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: var(--text-lighter);
        }

        .form-textarea {
            min-height: 130px;
            resize: vertical;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .form-submit {
            width: 100%;
            margin-top: 8px;
        }

        /* Success message */
        .form-success {
            display: none;
            text-align: center;
            padding: 48px 24px;
        }

        .form-success.show {
            display: block;
            animation: pageIn 0.5s ease forwards;
        }

        .form-success svg {
            width: 64px;
            height: 64px;
            color: #22C55E;
            margin: 0 auto 20px;
        }

        .form-success h3 {
            color: #22C55E;
            margin-bottom: 8px;
        }

        .form-success p {
            color: var(--text-light);
        }

        /* ============================================
           FOOTER
           ============================================ */
        .site-footer {
            background: var(--primary);
            color: var(--text-lighter);
            padding: 80px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 48px;
            padding-bottom: 60px;
            border-bottom: 1px solid rgba(248,250,252,0.08);
        }

        .footer-about .logo {
            color: var(--text-inverse);
            margin-bottom: 16px;
        }

        .footer-about .logo .logo-icon {
            background: var(--secondary);
        }

        .footer-about p {
            font-size: 0.9375rem;
            line-height: 1.7;
            color: var(--text-lighter);
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border: 1px solid rgba(248,250,252,0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-lighter);
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--secondary);
            border-color: var(--secondary);
            color: var(--primary);
        }

        .footer-social a svg {
            width: 16px;
            height: 16px;
        }

        .footer-col h4 {
            color: var(--text-inverse);
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 0.9375rem;
            color: var(--text-lighter);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-contact-item svg {
            width: 18px;
            height: 18px;
            color: var(--secondary);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .footer-contact-item p {
            font-size: 0.9375rem;
            line-height: 1.6;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8125rem;
        }

        .footer-bottom a {
            color: var(--text-lighter);
        }

        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ============================================
           SCROLL ANIMATIONS
           ============================================ */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .fade-in-up.delay-1 { transition-delay: 0.1s; }
        .fade-in-up.delay-2 { transition-delay: 0.2s; }
        .fade-in-up.delay-3 { transition-delay: 0.3s; }
        .fade-in-up.delay-4 { transition-delay: 0.4s; }

        /* ============================================
           RESPONSIVE
           ============================================ */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cert-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links, .nav-cta { display: none; }
            .hamburger { display: flex; }

            .hero-content { padding: 100px 0 60px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-decor { display: none; }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .categories-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .product-grid {
                grid-template-columns: 1fr;
            }

            .filter-bar {
                flex-direction: column;
            }

            .filter-group {
                width: 100%;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                left: 0 !important;
                text-align: left !important;
                padding-left: 56px;
                padding-right: 0;
            }

            .timeline-item::before {
                left: 12px !important;
                right: auto !important;
            }

            .process-row,
            .process-row.reverse {
                flex-direction: column;
                gap: 32px;
            }

            .process-image img {
                height: 240px;
            }

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

            .contact-grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .section {
                padding: 60px 0;
            }

            .page-header {
                padding: 120px 0 60px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .cert-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Dropdown System */
        .nav-item {
            position: relative;
        }

        .nav-link.has-dropdown {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link.has-dropdown svg {
            width: 14px;
            height: 14px;
            transition: transform 0.3s ease;
            opacity: 0.6;
            margin-top: 1px;
        }

        .nav-item:hover .nav-link.has-dropdown svg {
            transform: rotate(180deg);
        }

        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            min-width: 220px;
            padding: 10px;
            box-shadow: var(--shadow-xl);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1001;
            margin-top: 5px;
        }

        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .dropdown-menu::before {
            content: '';
            position: absolute;
            top: -10px;
            left: 0;
            right: 0;
            height: 10px;
            background: transparent;
        }

        .dropdown-link {
            display: block;
            padding: 10px 16px;
            font-weight: 500;
            font-size: 0.875rem;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .dropdown-link:hover {
            color: var(--primary);
            background: rgba(15, 23, 42, 0.04);
            padding-left: 20px;
        }

        .dropdown-link.active {
            color: var(--secondary-dark);
            background: rgba(245, 158, 11, 0.08);
        }

        /* Project Reveal Animations */
        .reveal-card {
            opacity: 0;
            transform: translateY(30px) scale(0.95);
            filter: blur(10px);
            transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
        }

        .reveal-card.visible {
            opacity: 1;
            transform: translateY(0) scale(1);
            filter: blur(0);
        }

        /* Hover Zoom Effect for Projects */
        .product-card {
            overflow: hidden;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
        }

        .product-image {
            overflow: hidden;
        }

        .product-image img {
            transition: transform 0.6s cubic-bezier(0.2, 1, 0.3, 1);
        }

        .product-card:hover .product-image img {
            transform: scale(1.1);
        }

        /* Staggered Delay Utilities */
        .delay-1 { transition-delay: 0.1s; }
        .delay-2 { transition-delay: 0.2s; }
        .delay-3 { transition-delay: 0.3s; }

        /* Premium Scrollbar */
        ::-webkit-scrollbar {
            width: 10px;
        }

        ::-webkit-scrollbar-track {
            background: rgba(15, 23, 42, 0.05);
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(to bottom, var(--secondary-light), var(--secondary));
            border-radius: 100px;
            border: 2px solid transparent;
            background-clip: content-box;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
            background-clip: content-box;
        }