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

        :root {
            --primary: #1a538f;
            --primary-light: #2e7bc4;
            --primary-dark: #0f3d6b;
            --accent: #f5a623;
            --text-dark: #333;
            --text-gray: #666;
            --text-light: #999;
            --bg-white: #fff;
            --bg-gray: #f5f7fa;
            --bg-blue: #eef4fb;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1440px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
            background: var(--bg-white);
            overflow-x: hidden;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-gray);
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 2px;
        }

        .section-title p {
            font-size: 16px;
            color: var(--text-gray);
            max-width: 800px;
            margin: 20px auto 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo img {
            height: 40px;
        }

        .logo-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: auto;
            margin-right: auto;
        }

        .nav a {
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

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

        .nav a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }

        .nav a:hover::after {
            width: 100%;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .header-cta .btn {
            padding: 10px 24px;
            font-size: 14px;
        }

        /* Banner */
        .banner {
            margin-top: 80px;
            position: relative;
            width: 100%;
            overflow: hidden;
            background: var(--bg-blue);
        }

        .banner img {
            width: 100%;
            height: auto;
            display: block;
            max-height: 600px;
            object-fit: cover;
            object-position: center;
        }

        .banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-white), transparent);
            pointer-events: none;
        }

        /* Banner Carousel */
        .banner-carousel {
            position: relative;
            width: 100%;
            height: 100%;
            overflow: hidden;
            touch-action: pan-y;
            -webkit-tap-highlight-color: transparent;
        }

        .banner-slides {
            position: relative;
            width: 100%;
            height: auto;
        }

        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            overflow: hidden;
            opacity: 0;
            transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .banner-slide:first-child {
            position: relative;
            opacity: 1;
        }

        .banner-slide.active {
            opacity: 1;
            z-index: 1;
        }

        .banner-slide img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
            -webkit-user-drag: none;
            user-select: none;
            -webkit-user-select: none;
            pointer-events: none;
        }

        .banner-dots {
            position: absolute;
            left: 50%;
            bottom: 24px;
            transform: translateX(-50%);
            display: flex;
            align-items: center;
            gap: 10px;
            z-index: 10;
            padding: 6px 10px;
        }

        .banner-dot {
            width: 10px;
            height: 10px;
            padding: 0;
            border: none;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.55);
            cursor: pointer;
            outline: none;
            transition: background-color 0.2s ease, transform 0.2s ease, width 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
            -webkit-appearance: none;
            appearance: none;
        }

        .banner-dot:hover {
            background: rgba(255, 255, 255, 0.9);
        }

        .banner-dot:focus-visible {
            box-shadow: 0 0 0 3px rgba(26, 83, 143, 0.45);
        }

        .banner-dot.active {
            background: #fff;
            width: 26px;
            border-radius: 6px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
        }

        /* Banner Slider */
        .banner-slider {
            position: relative;
            width: 100%;
            height: auto;
            touch-action: pan-y;
            -webkit-tap-highlight-color: transparent;
        }

        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            overflow: hidden;
            opacity: 0;
            transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
            will-change: opacity;
            transform: translateZ(0);
            -webkit-transform: translateZ(0);
            backface-visibility: hidden;
            -webkit-backface-visibility: hidden;
        }

        .banner-slide:first-child {
            position: relative;
            opacity: 1;
            pointer-events: auto;
        }

        .banner-slide.active {
            opacity: 1;
            pointer-events: auto;
            z-index: 1;
        }

        .banner-slide img {
            width: 100%;
            height: auto;
            display: block;
            -webkit-user-drag: none;
            user-select: none;
            -webkit-user-select: none;
        }

        .banner-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: none;
            background: rgba(0, 0, 0, 0.35);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10;
            opacity: 0;
            transition: opacity 0.3s ease, background-color 0.3s ease;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .banner:hover .banner-arrow {
            opacity: 1;
        }

        .banner-arrow:hover {
            background: rgba(0, 0, 0, 0.55);
        }

        .banner-arrow svg {
            width: 22px;
            height: 22px;
        }

        .banner-prev {
            left: 20px;
        }

        .banner-next {
            right: 20px;
        }

        @media (max-width: 768px) {
            .banner-arrow {
                width: 36px;
                height: 36px;
                opacity: 0.7;
            }
            .banner-arrow svg {
                width: 18px;
                height: 18px;
            }
            .banner-prev {
                left: 10px;
            }
            .banner-next {
                right: 10px;
            }
        }

        /* Product Intro */
        .product-intro {
            padding: 80px 0;
        }

        .product-intro-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .product-intro-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .product-intro-img img {
            width: 100%;
            transition: transform 0.5s;
        }

        .product-intro-img:hover img {
            transform: scale(1.05);
        }

        .product-intro-text h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .product-intro-text h2 span {
            color: var(--primary);
        }

        .product-intro-text p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .product-intro-text .feature-list {
            list-style: none;
            margin: 20px 0 24px;
            padding: 0;
        }

        .product-intro-text .feature-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        .product-intro-text .feature-list li::before {
            content: '✔';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .product-intro-text .btn {
            margin-top: 10px;
        }

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

        .product-card {
            position: relative;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }

        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .product-card::after {
            content: 'Inquire Now';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 12px;
            background: linear-gradient(to top, rgba(26, 83, 143, 0.95), rgba(26, 83, 143, 0));
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            text-align: center;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
            pointer-events: none;
            border-bottom-left-radius: var(--radius-md);
            border-bottom-right-radius: var(--radius-md);
        }

        .product-card:hover::after {
            opacity: 1;
            transform: translateY(0);
        }

        .product-card-img {
            aspect-ratio: 1;
            overflow: hidden;
            background: var(--bg-gray);
        }

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

        .product-card:hover .product-card-img img {
            transform: scale(1.08);
        }

        .product-card-title {
            padding: 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
            line-height: 1.5;
        }

        .product-card:hover .product-card-title {
            color: var(--primary);
        }

        /* OEM/ODM Section */
        .oem-section {
            padding: 80px 0;
            background: var(--bg-blue);
        }

        .oem-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .oem-text h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .oem-text p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .oem-features {
            margin: 24px 0;
        }

        .oem-feature {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .oem-feature-icon {
            font-size: 24px;
            flex-shrink: 0;
            line-height: 1;
        }

        .oem-feature strong {
            color: var(--primary);
            font-weight: 600;
        }

        .oem-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .oem-img img {
            width: 100%;
            transition: transform 0.5s;
        }

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

        /* Why Choose Us */
        .why-us {
            padding: 60px 0;
            position: relative;
            overflow: hidden;
            background-image: url('static/picture/file_01750657629890.jpg');
            background-size: cover;
            /* background-position: center;
            background-attachment: fixed; */
        }

        .why-us::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(15, 61, 107, 0.85) 0%, rgba(26, 83, 143, 0.8) 50%, rgba(46, 123, 196, 0.75) 100%);
            z-index: 0;
        }

        .why-us::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: #fff;
            opacity: 0.08;
            border-radius: 50%;
            top: -100px;
            left: -100px;
            z-index: 0;
        }

        .why-us .section-title {
            position: relative;
            z-index: 1;
            margin-bottom: 35px;
        }

        .why-us .section-title h2 {
            color: #fff;
        }

        .why-us .section-title h2::after {
            background: linear-gradient(90deg, #fff, rgba(255,255,255,0.5));
        }

        .why-us .section-title p {
            color: rgba(255,255,255,0.8);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            position: relative;
            z-index: 1;
        }

        .stat-card {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-md);
            padding: 24px 16px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            background: rgba(255,255,255,0.25);
            box-shadow: var(--shadow-md);
        }

        .stat-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 12px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
        }

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

        .icon-gold {
            background: linear-gradient(135deg, #f5a623, #f7c948);
        }

        .icon-green {
            background: linear-gradient(135deg, #27ae60, #2ecc71);
        }

        .icon-blue {
            background: linear-gradient(135deg, #3498db, #5dade2);
        }

        .icon-orange {
            background: linear-gradient(135deg, #e67e22, #f39c12);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255,255,255,0.8);
            line-height: 1.4;
        }

        /* Production Process */
        .process-section {
            padding: 80px 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .process-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .process-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .process-card-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            background: var(--bg-gray);
        }

        .process-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .process-card:hover .process-card-img img {
            transform: scale(1.08);
        }

        .process-card-title {
            padding: 16px;
            text-align: center;
            font-size: 15px;
            font-weight: 600;
            color: #1b5390;
        }

        /* Certificates */
        .cert-section {
            padding: 80px 0;
            background: var(--bg-gray);
        }

        .cert-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .cert-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }

        .cert-card:hover {
            transform: translateY(-6px) scale(1.02);
            box-shadow: var(--shadow-lg);
        }

        .cert-card-img {
            aspect-ratio: 3/4;
            overflow: hidden;
            background: var(--bg-gray);
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .cert-card-img img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            transition: transform 0.5s;
        }

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

        .cert-card-title {
            padding: 12px;
            text-align: center;
            font-size: 15px;
            color: var(--text-gray);
            border-top: 1px solid #eee;
        }

        /* About Section */
        .about-section {
            padding: 80px 0;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .video-wrapper {
            position: relative;
            width: 100%;
            display: block;
            cursor: pointer;
            overflow: hidden;
            border-radius: var(--radius-lg);
            background: #000;
            line-height: 0;
            aspect-ratio: 16 / 9;
        }

        .about-video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            z-index: 2;
        }

        .video-poster {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: opacity 0.4s ease, transform 0.5s ease;
            z-index: 1;
        }

        .video-wrapper.playing .video-poster {
            opacity: 0;
        }

        .video-wrapper:hover .video-poster {
            transform: scale(1.05);
        }

        .video-play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80px;
            height: 80px;
            background: rgba(26, 83, 143, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            z-index: 2;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(26, 83, 143, 0.4);
        }

        .video-play-btn svg {
            width: 36px;
            height: 36px;
            margin-left: 4px;
        }

        .video-wrapper:hover .video-play-btn {
            transform: translate(-50%, -50%) scale(1.15);
            background: var(--primary);
            box-shadow: 0 6px 30px rgba(26, 83, 143, 0.6);
        }

        .video-wrapper.playing .video-play-btn {
            opacity: 0;
            pointer-events: none;
        }

        .about-img img {
            width: 100%;
            transition: transform 0.5s;
        }

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

        .about-text h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-text h2 span {
            color: var(--primary);
        }

        .about-text p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        /* Contact Section */
        .contact-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            background-image: url('static/picture/file_01660722785632.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(15, 61, 107, 0.5) 0%, rgba(26, 83, 143, 0.5) 100%);
            z-index: 0;
        }

        .contact-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: #fff;
            opacity: 0.06;
            border-radius: 50%;
            bottom: -100px;
            right: -50px;
            z-index: 0;
        }

        .contact-section .section-title {
            position: relative;
            z-index: 1;
        }

        .contact-section .section-title h2 {
            color: #fff;
        }

        .contact-section .section-title h2::after {
            background: linear-gradient(90deg, #fff, rgba(255,255,255,0.5));
        }

        .contact-section .section-title p {
            color: rgba(255,255,255,0.8);
        }

        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            position: relative;
            z-index: 1;
            align-items: center;
        }

        .contact-info {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .contact-info-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 12px;
        }

        .contact-info-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            transition: all 0.3s ease;
        }

        .contact-info-icon svg {
            width: 22px;
            height: 22px;
        }

        .contact-info-item:hover .contact-info-icon {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-3px);
        }

        .contact-info-item h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .contact-info-item p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            margin: 0;
        }

        .contact-form {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 16px;
            position: relative;
            z-index: 1;
        }

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

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

        .form-group {
            position: relative;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 16px 20px;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 15px;
            font-family: inherit;
            transition: var(--transition);
            outline: none;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255,255,255,0.5);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            background: rgba(255,255,255,0.15);
            border-color: rgba(255,255,255,0.4);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .contact-form .btn {
            width: 100%;
            padding: 16px;
            font-size: 16px;
            background: #fff;
            color: var(--primary);
            margin-top: 8px;
        }

        .contact-form .btn:hover {
            background: var(--bg-gray);
        }

        /* Footer */
        .footer {
            background: #0a1f35;
            color: rgba(255,255,255,0.7);
            padding: 50px 0 30px;
        }

        .footer-content {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            gap: 16px;
        }

        .footer-logo {
            height: 32px;
        }

        .footer-copyright {
            font-size: 14px;
            text-align: center;
        }

        /* Lightbox Modal */
        .lightbox-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 2000;
            display: none;
            align-items: center;
            justify-content: center;
        }

        .lightbox-modal.active {
            display: flex;
        }

        .lightbox-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(5px);
        }

        .lightbox-content {
            position: relative;
            z-index: 1;
            max-width: 90vw;
            max-height: 90vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            animation: lightboxFadeIn 0.3s ease;
        }

        @keyframes lightboxFadeIn {
            from {
                opacity: 0;
                transform: scale(0.9);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .lightbox-image {
            max-width: 100%;
            max-height: 75vh;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }

        .lightbox-caption {
            margin-top: 16px;
            color: #fff;
            font-size: 16px;
            text-align: center;
        }

        .lightbox-close,
        .lightbox-prev,
        .lightbox-next {
            position: absolute;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            font-size: 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            z-index: 2;
        }

        .lightbox-close:hover,
        .lightbox-prev:hover,
        .lightbox-next:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: scale(1.1);
        }

        .lightbox-close {
            top: -60px;
            right: 0;
        }

        .lightbox-prev {
            left: -70px;
            top: 50%;
            transform: translateY(-50%);
        }

        .lightbox-prev:hover {
            transform: translateY(-50%) scale(1.1);
        }

        .lightbox-next {
            right: -70px;
            top: 50%;
            transform: translateY(-50%);
        }

        .lightbox-next:hover {
            transform: translateY(-50%) scale(1.1);
        }

        .cert-card {
            cursor: zoom-in;
        }

        @media (max-width: 768px) {
            .lightbox-close {
                top: -50px;
                width: 40px;
                height: 40px;
                font-size: 20px;
            }

            .lightbox-prev {
                left: 10px;
                width: 40px;
                height: 40px;
                font-size: 18px;
            }

            .lightbox-next {
                right: 10px;
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
        }

        /* Lazy Load */
        .lazy {
            opacity: 0;
            transition: opacity 0.4s ease;
            /* background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%); */
            background-size: 200% 100%;
            animation: skeleton-loading 1.5s infinite;
        }

        .lazy.loaded {
            opacity: 1;
            animation: none;
        }

        @keyframes skeleton-loading {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        /* Scroll Animation */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

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

        /* Responsive */
        @media (max-width: 1280px) {
            .product-grid,
            .process-grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .cert-grid {
                grid-template-columns: repeat(5, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .product-intro-content,
            .oem-content,
            .about-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .product-intro-img,
            .oem-img,
            .about-img {
                order: -1;
            }

            .nav {
                display: none;
            }

            .contact-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .banner {
                margin-top: 70px;
            }
        }

        @media (max-width: 600px) {
            .section {
                padding: 50px 0;
            }

            .section-title h2 {
                font-size: 28px;
            }

            .banner {
                margin-top: 60px;
            }

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

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

            .header-inner {
                height: 60px;
            }

            .banner {
                margin-top: 60px;
            }

            .header-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .stat-number {
                font-size: 36px;
            }

            .contact-form {
                padding: 24px;
            }

            .contact-info {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .banner-dots {
                bottom: 14px;
                gap: 8px;
                padding: 5px 8px;
            }

            .banner-dot {
                width: 8px;
                height: 8px;
            }

            .banner-dot.active {
                width: 22px;
            }
        }

        /* Floating Action Buttons */
        .floating-buttons {
            position: fixed;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            gap: 16px;
            z-index: 1000;
        }

        .floating-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 15px rgba(0,0,0,0.25);
            transition: all 0.3s ease;
        }

        .floating-btn svg {
            width: 28px;
            height: 28px;
        }

        .floating-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 25px rgba(0,0,0,0.35);
        }

        .btn-email {
            background: linear-gradient(135deg, #667eea, #764ba2);
        }

        .btn-whatsapp {
            background: linear-gradient(135deg, #25d366, #128c7e);
        }

        @media (max-width: 768px) {
            .floating-buttons {
                right: 15px;
                bottom: 20px;
                top: auto;
                transform: none;
                gap: 12px;
            }

            .floating-btn {
                width: 48px;
                height: 48px;
            }

            .floating-btn svg {
                width: 24px;
                height: 24px;
            }
        }