* { margin: 0; padding: 0; box-sizing: border-box; }
        
        :root {
            --primary: #1a3a5c;
            --primary-dark: #0f2540;
            --accent: #c9a961;
            --gray-900: #1a1a1a;
            --gray-700: #4a4a4a;
            --gray-500: #8a8a8a;
            --gray-300: #d4d4d4;
            --gray-100: #f5f5f5;
            --gray-50: #fafafa;
            --white: #ffffff;
            --line: #e8e8e8;
        }
        
        html { scroll-behavior: smooth; }
        
        body {
            font-family: 'Inter', sans-serif;
            color: var(--gray-900);
            line-height: 1.6;
            background: var(--white);
            -webkit-font-smoothing: antialiased;
        }
        
        h1, h2, h3, h4 {
            font-family: 'Inter', sans-serif;
            font-weight: 600;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        
        h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; }
        h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
        h3 { font-size: 1.2rem; }
        
        p { color: var(--gray-700); line-height: 1.7; }
        
        /* ============ HEADER ============ */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
            z-index: 1000;
        }
        
        nav {
            max-width: 1400px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 3px;
            color: var(--primary);
        }
        
        .logo-accent {
            color: var(--accent);
            font-weight: 400;
            margin-left: 0.5rem;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        
        nav a {
            font-size: 0.85rem;
            text-decoration: none;
            color: var(--gray-900);
            font-weight: 500;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            transition: color 0.3s;
        }
        
        nav a:hover { color: var(--accent); }
        
        .lang-switch {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding-left: 1.5rem;
            border-left: 1px solid var(--line);
        }
        
        .lang-btn {
            font-size: 0.8rem;
            color: var(--gray-500);
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            font-weight: 500;
            font-family: 'Inter', sans-serif;
            transition: color 0.3s;
        }
        
        .lang-btn:hover {
            color: var(--accent);
        }
        
        .lang-btn.active {
            color: var(--primary);
            font-weight: 700;
        }
        
        .lang-divider {
            color: var(--gray-300);
            font-size: 0.8rem;
        }
        
        /* ============ HERO ============ */
        .hero {
            min-height: 90vh;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: var(--white);
            display: flex;
            align-items: center;
            padding: 6rem 2rem;
            position: relative;
            overflow: hidden;
        }
        
        /* Hero 背景图轮播 */
        .hero-bg {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            z-index: 0;
        }
        
        .hero-bg-slide {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transition: opacity 1.5s ease-in-out;
        }
        
        .hero-bg-slide.active {
            opacity: 0.25;
        }
        
        .hero-bg-slide.slide-1 {
            background-image: url('../images/hero-slide-1.jpg');
        }
        
        .hero-bg-slide.slide-2 {
            background-image: url('../images/hero-slide-2.jpg');
        }
        
        /* 深色蒙版（确保文字可读） */
        .hero-overlay {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(135deg, rgba(15, 37, 64, 0.85) 0%, rgba(26, 58, 92, 0.75) 100%);
            z-index: 1;
        }
        
        /* 轮播指示器 */
        .hero-dots {
            position: absolute;
            bottom: 3rem;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 0.8rem;
            z-index: 5;
        }
        
        .hero-dot {
            width: 40px;
            height: 3px;
            background: rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            padding: 0;
        }
        
        .hero-dot.active {
            background: var(--accent);
            width: 60px;
        }
        
        .hero-content {
            max-width: 1400px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
            width: 100%;
        }
        
        .hero-tag {
            display: inline-block;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 3px;
            color: var(--accent);
            margin-bottom: 1.5rem;
            font-weight: 600;
        }
        
        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 5rem);
            font-weight: 300;
            margin-bottom: 1.5rem;
            line-height: 1.1;
            letter-spacing: -0.03em;
        }
        
        .hero h1 strong {
            font-weight: 700;
            color: var(--accent);
        }
        
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--gray-300);
            max-width: 700px;
            line-height: 1.7;
            font-weight: 300;
            margin-bottom: 1rem;
        }
        
        .hero-byline {
            font-size: 0.95rem;
            color: var(--accent);
            font-weight: 500;
            font-style: italic;
            margin-bottom: 3rem;
        }
        
        .hero-cta {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: var(--accent);
            color: var(--primary-dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            transition: all 0.3s;
        }
        
        .hero-cta:hover {
            background: var(--white);
            transform: translateY(-2px);
        }

        /* ============ COMPANY VIDEO ============ */
        .company-video-section {
            padding: 5rem 2rem;
            background: var(--gray-50);
            border-bottom: 1px solid var(--line);
        }

        .company-video-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
            gap: 4rem;
            align-items: center;
        }

        .company-video-copy h2 {
            color: var(--primary);
            margin-bottom: 1.25rem;
        }

        .company-video-copy p {
            max-width: 520px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .company-video-frame {
            position: relative;
            background: var(--primary-dark);
            border: 1px solid rgba(15, 37, 64, 0.12);
            box-shadow: 0 24px 60px rgba(9, 21, 36, 0.14);
        }

        .company-video-frame::before {
            content: '';
            position: absolute;
            top: -14px;
            left: 32px;
            right: 32px;
            height: 14px;
            background: var(--accent);
        }

        .company-video {
            position: relative;
            z-index: 1;
            display: block;
            width: 100%;
            aspect-ratio: 16 / 9;
            border: 0;
            background: var(--primary-dark);
            object-fit: cover;
        }

        .company-video-fullscreen {
            position: absolute;
            top: 1rem;
            right: 1rem;
            z-index: 3;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, 0.24);
            background: rgba(15, 37, 64, 0.78);
            color: var(--white);
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }

        .company-video-fullscreen:hover {
            background: rgba(15, 37, 64, 0.94);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .company-video-fullscreen span,
        .company-video-fullscreen span::before,
        .company-video-fullscreen span::after {
            position: absolute;
            inset: 11px;
            border: 2px solid currentColor;
        }

        .company-video-fullscreen span {
            display: block;
            border-right: 0;
            border-bottom: 0;
        }

        .company-video-fullscreen span::before,
        .company-video-fullscreen span::after {
            content: '';
            inset: auto;
            width: 10px;
            height: 10px;
        }

        .company-video-fullscreen span::before {
            right: -18px;
            top: -2px;
            border-left: 0;
            border-bottom: 0;
        }

        .company-video-fullscreen span::after {
            left: -2px;
            bottom: -18px;
            border-right: 0;
            border-top: 0;
        }

        .company-video-frame:fullscreen {
            width: 100vw;
            height: 100vh;
            border: 0;
            box-shadow: none;
            background: #000;
        }

        .company-video-frame:fullscreen::before {
            display: none;
        }

        .company-video-frame:fullscreen .company-video {
            width: 100vw;
            height: 100vh;
            aspect-ratio: auto;
        }

        .company-video-frame:-webkit-full-screen {
            width: 100vw;
            height: 100vh;
            border: 0;
            box-shadow: none;
            background: #000;
        }

        .company-video-frame:-webkit-full-screen::before {
            display: none;
        }

        .company-video-frame:-webkit-full-screen .company-video {
            width: 100vw;
            height: 100vh;
            aspect-ratio: auto;
        }
        
        /* ============ TAB SWITCHER MODULE (BETTEX 风格) ============ */
        .tabs-section {
            background: var(--white);
            padding: 4rem 2rem 2.25rem;
            border-bottom: 1px solid var(--line);
        }
        
        .tabs-container {
            max-width: 1400px;
            margin: 0 auto;
        }
        
        /* 标签栏 */
        .tabs-nav {
            display: flex;
            justify-content: center;
            gap: 4rem;
            margin-bottom: 4rem;
            border-bottom: 1px solid var(--line);
            flex-wrap: wrap;
        }
        
        .tab-btn {
            background: none;
            border: none;
            padding: 1.2rem 0.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gray-500);
            cursor: pointer;
            position: relative;
            transition: color 0.3s;
            font-family: 'Inter', sans-serif;
        }
        
        .tab-btn:hover {
            color: var(--primary);
        }
        
        .tab-btn.active {
            color: var(--primary);
        }
        
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
        }
        
        /* 标签内容 */
        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }
        
        .tab-content.active {
            display: block;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        /* About Tab 内容 */
        .tab-about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        
        .tab-about-image {
            width: 100%;
            height: 450px;
            object-fit: cover;
        }
        
        .tab-about-content p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--gray-700);
            text-align: justify;
            text-justify: inter-word;
        }
        
        /* Products Tab 内容 */
        .tab-products-grid {
            display: grid;
            grid-template-columns: minmax(0, 280px);
            justify-content: center;
            gap: 2rem;
            margin: 0 auto;
        }
        
        .tab-product-card {
            position: relative;
            overflow: hidden;
            cursor: pointer;
            aspect-ratio: 1;
            background: var(--gray-100);
            transition: all 0.4s;
        }
        
        .tab-product-card:hover {
            transform: translateY(-3px);
        }
        
        .tab-product-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .tab-product-card:hover .tab-product-img {
            transform: scale(1.08);
        }
        
        .tab-product-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1rem;
            background: linear-gradient(to top, rgba(15, 37, 64, 0.9), transparent);
            color: white;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        
        .tab-product-icon-card {
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--gray-50);
            font-size: 4rem;
            transition: all 0.4s;
        }
        
        .tab-product-icon-card:hover {
            background: var(--primary);
            color: var(--accent);
        }
        
        /* Certifications Tab 内容 */
        .tab-certs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: 1100px;
            margin: 0 auto;
        }
        
        .tab-cert-block {
            background: var(--white);
            border: 2px solid var(--gray-100);
            padding: 3rem 1.5rem;
            text-align: center;
            transition: all 0.4s;
        }
        
        .tab-cert-block:hover {
            border-color: var(--accent);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transform: translateY(-3px);
        }
        
        .tab-cert-name {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        
        .tab-cert-desc {
            font-size: 0.8rem;
            color: var(--gray-500);
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }
        
        /* ============ SECTION GENERAL ============ */
        section {
            padding: 6rem 2rem;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 3px;
            color: var(--accent);
            margin-bottom: 1rem;
            font-weight: 700;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 1rem;
        }
        
        .section-subtitle {
            text-align: center;
            color: var(--gray-500);
            max-width: 700px;
            margin: 0 auto 4rem;
            font-size: 1.05rem;
        }
        
        /* ============ ABOUT ============ */
        .about-section {
            background: var(--white);
            border-bottom: 1px solid var(--line);
            padding: 2.25rem 2rem 5rem;
        }
        
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: center;
        }
        
        .about-image {
            width: 100%;
            height: 500px;
            object-fit: cover;
        }
        
        .about-content h2 {
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
        
        .about-content p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            text-align: justify;
            text-justify: inter-word;
        }
        
        /* ============ PRODUCTS GRID ============ */
        .products-section {
            background: var(--gray-50);
            border-bottom: 1px solid var(--line);
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            max-width: 100%;
            margin: 0 auto;
        }
        
        /* 大产品卡片样式（2 列布局）*/
        .product-card-link {
            text-decoration: none;
            color: inherit;
            display: block;
            min-width: 0;
        }
        
        .product-card-large {
            background: var(--white);
            border: 1px solid var(--line);
            padding: 3rem 2.5rem;
            text-align: center;
            transition: all 0.4s ease;
            cursor: pointer;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .product-card-large:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.1);
            border-color: var(--accent);
        }
        
        .product-card-large-icon {
            font-size: 3.5rem;
            margin-bottom: 1rem;
        }
        
        .product-card-large h3 {
            color: var(--primary);
            font-size: 2rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
        }
        
        .product-card-large-desc {
            color: var(--gray-700);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 720px;
        }
        
        .product-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 2rem;
            flex: 1;
            justify-content: center;
        }
        
        .product-card-tags span {
            display: inline-block;
            padding: 0.4rem 0.9rem;
            background: var(--gray-50);
            border: 1px solid var(--line);
            font-size: 0.8rem;
            color: var(--gray-700);
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }
        
        .product-card-large:hover .product-card-tags span {
            background: var(--white);
            border-color: var(--accent);
            color: var(--primary);
        }
        
        .product-card-link-text {
            color: var(--accent);
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-top: auto;
            transition: transform 0.3s;
        }
        
        .product-card-large:hover .product-card-link-text {
            transform: translateY(2px);
        }
        
        .product-card {
            background: var(--white);
            border: 1px solid var(--line);
            padding: 2.5rem 1.5rem;
            text-align: center;
            transition: all 0.4s ease;
            cursor: pointer;
        }
        
        .product-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        
        .product-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }
        
        .product-card h3 {
            color: var(--primary);
            font-size: 1rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        /* ============ WHY US - BIG NUMBERS ============ */
        .why-us {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .why-us .section-tag { color: var(--accent); }
        .why-us h2 { color: var(--white); }
        .why-us .section-subtitle { color: var(--gray-300); }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .stat-block {
            text-align: center;
            padding: 2.5rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all 0.3s;
        }
        
        .stat-block:hover {
            border-color: var(--accent);
            background: rgba(201, 169, 97, 0.05);
        }
        
        .stat-number {
            font-size: 3.5rem;
            font-weight: 200;
            color: var(--accent);
            margin-bottom: 0.5rem;
            line-height: 1;
            letter-spacing: -0.03em;
        }
        
        .stat-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--gray-300);
            font-weight: 500;
        }
        
        /* ============ HISTORY TIMELINE ============ */
        .history-section {
            background: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .history-section h2 { color: var(--primary); }
        
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 4rem auto 0;
            padding-left: 60px;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--gray-300);
        }
        
        .timeline-item {
            position: relative;
            padding-bottom: 3rem;
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }

        .timeline-item.is-inview {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .timeline-item {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -54px;
            top: 8px;
            width: 26px;
            height: 26px;
            background: var(--white);
            border: 2px solid var(--accent);
            border-radius: 50%;
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            left: -47px;
            top: 15px;
            width: 12px;
            height: 12px;
            background: var(--accent);
            border-radius: 50%;
        }
        
        .timeline-year {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        
        .timeline-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        
        .timeline-content {
            color: var(--gray-700);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        
        /* ============ CUSTOMERS ============ */
        .customers-section {
            background: var(--gray-50);
            border-bottom: 1px solid var(--line);
        }
        
        .customers-section h2 { color: var(--primary); }
        
        .customers-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 0;
            border-top: 1px solid var(--line);
            border-left: 1px solid var(--line);
            background: var(--white);
        }
        
        .customer-cell {
            border-right: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 2rem 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 110px;
            transition: all 0.3s;
        }
        
        .customer-cell:hover {
            background: var(--gray-50);
        }
        
        .customer-name {
            font-size: 1rem;
            font-weight: 600;
            color: var(--gray-700);
            text-align: center;
            letter-spacing: 0.5px;
        }
        
        .customer-note {
            text-align: center;
            color: var(--gray-500);
            font-style: italic;
            margin-top: 2rem;
            font-size: 0.95rem;
        }
        
        /* ============ CERTIFICATIONS ============ */
        .certs-section {
            background: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .certs-section h2 { color: var(--primary); }
        
        .certs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .cert-block {
            text-align: center;
            padding: 3rem 2rem;
            border: 2px solid var(--line);
            transition: all 0.3s;
        }
        
        .cert-block:hover {
            border-color: var(--accent);
        }
        
        .cert-name {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        
        .cert-description {
            font-size: 0.85rem;
            color: var(--gray-500);
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }
        
        /* ============ GLOBAL NETWORK ============ */
        .network-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .network-section .section-tag { color: var(--accent); }
        .network-section h2 { color: var(--white); }
        .network-section .section-subtitle { color: var(--gray-300); }
        
        .network-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 4rem;
            padding-top: 4rem;
            border-top: 1px solid rgba(255,255,255,0.15);
        }
        
        .network-stat {
            text-align: center;
        }
        
        .network-num {
            font-size: 4rem;
            font-weight: 200;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 1rem;
            letter-spacing: -0.03em;
        }
        
        .network-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--gray-300);
        }
        
        .network-locations {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 4rem;
        }
        
        .location-group {
            border-left: 2px solid var(--accent);
            padding-left: 2rem;
        }
        
        .location-region {
            font-size: 0.8rem;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        
        .location-list {
            list-style: none;
            color: var(--gray-300);
        }
        
        .location-list li {
            padding: 0.4rem 0;
            font-size: 0.95rem;
        }
        
        /* ============ FACTORIES ============ */
        .factories-section {
            background: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .factories-section h2 { color: var(--primary); }
        
        .factories-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-top: 3rem;
            align-items: start;
        }
        
        .factory-card {
            background: var(--white);
            border: 1px solid var(--line);
            overflow: hidden;
            transition: all 0.4s;
            display: flex;
            flex-direction: column;
        }
        
        .factory-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.1);
        }
        
        .factory-card-image {
            width: 100%;
            height: 530px;
            object-fit: cover;
            flex: none;
            display: block;
        }
        
        .factory-card-content {
            padding: 1.5rem 2rem;
            flex-shrink: 0;
        }
        
        .factory-flag {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: var(--gray-500);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        
        .factory-flag-icon {
            font-size: 1.2rem;
        }
        
        .factory-card-title {
            color: var(--primary);
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        
        .factory-card-desc {
            color: var(--gray-700);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }
        
        .factory-data {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            padding-top: 1.25rem;
            border-top: 1px solid var(--line);
        }
        
        .factory-data-item {
            text-align: center;
        }
        
        .factory-data-num {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 0.3rem;
            letter-spacing: -0.01em;
        }
        
        .factory-data-label {
            font-size: 0.7rem;
            color: var(--gray-500);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        /* ============ ESG ============ */
        .esg-section {
            background: var(--gray-50);
            border-bottom: 1px solid var(--line);
        }
        
        .esg-section h2 { color: var(--primary); }
        
        .esg-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .esg-card {
            background: var(--white);
            padding: 3rem 2rem;
            border-top: 4px solid var(--accent);
            transition: all 0.3s;
        }
        
        .esg-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
        }
        
        .esg-card h3 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        
        .esg-card-list {
            list-style: none;
            margin-top: 1.5rem;
        }
        
        .esg-card-list li {
            padding: 0.5rem 0;
            padding-left: 1.5rem;
            position: relative;
            font-size: 0.9rem;
            color: var(--gray-700);
        }
        
        .esg-card-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
        }
        
        /* ============ NEWS ============ */
        .news-section {
            background: var(--white);
            border-bottom: 1px solid var(--line);
        }
        
        .news-section h2 { color: var(--primary); }
        
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .news-card {
            overflow: hidden;
            background: var(--white);
            border: 1px solid var(--line);
            cursor: default;
        }
        
        .news-card:hover {
            transform: none;
            box-shadow: none;
            border-color: var(--line);
        }
        
        .news-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        
        .news-content {
            padding: 2rem;
        }
        
        .news-date {
            display: inline-block;
            margin-bottom: 1rem;
            color: var(--accent);
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 1.8px;
            text-transform: uppercase;
        }
        
        .news-title {
            color: var(--primary);
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.4;
        }
        
        /* ============ CONTACT ============ */
        .contact-section {
            background: var(--primary-dark);
            color: var(--white);
            padding: 6rem 2rem;
        }
        
        .contact-section h2 {
            color: var(--white);
            text-align: center;
        }
        
        .contact-section .section-subtitle {
            color: var(--gray-300);
        }
        
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 2rem;
            margin-top: 3rem;
            padding-top: 3rem;
            border-top: 1px solid rgba(255,255,255,0.15);
            max-width: 960px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .contact-block {
            text-align: center;
            padding: 1rem;
        }
        
        .contact-label {
            font-size: 0.75rem;
            color: var(--gray-300);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        
        .contact-value {
            font-size: 1rem;
            color: var(--accent);
            font-weight: 500;
        }
        
        /* ============ FOOTER ============ */
        footer {
            background: #050a14;
            color: var(--gray-300);
            padding: 3rem 2rem 1.5rem;
            font-size: 0.85rem;
        }
        
        .footer-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        
        .footer-col h4 {
            color: var(--white);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        
        .footer-col ul {
            list-style: none;
        }
        
        .footer-col li {
            padding: 0.4rem 0;
        }
        
        .footer-col a {
            color: var(--gray-300);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-col a:hover {
            color: var(--accent);
        }
        
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: 3px;
            margin-bottom: 1rem;
        }
        
        .footer-tagline {
            color: var(--gray-500);
            line-height: 1.7;
        }
        
        .footer-bottom {
            max-width: 1400px;
            margin: 1.5rem auto 0;
            text-align: center;
            color: var(--gray-500);
        }
        
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            nav ul { gap: 1rem; }
            .about-grid { grid-template-columns: 1fr; gap: 2rem; }
            .products-grid { grid-template-columns: 1fr; gap: 1.75rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .customers-grid { grid-template-columns: repeat(4, 1fr); }
            .certs-grid { grid-template-columns: repeat(2, 1fr); }
            .network-stats { grid-template-columns: repeat(2, 1fr); }
            .network-locations { grid-template-columns: 1fr; }
            .factories-grid { grid-template-columns: 1fr; }
            .esg-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .contact-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
            .tab-about-grid { grid-template-columns: 1fr; gap: 2rem; }
            .tab-products-grid { grid-template-columns: minmax(0, 280px); justify-content: center; }
            .tab-certs-grid { grid-template-columns: repeat(2, 1fr); }
            .tabs-nav { gap: 2rem; }
        }

        /* 制造能力双卡片：移动端改为单列，避免裁切与横向溢出 */
        @media (max-width: 820px) {
            .products-section .container {
                max-width: 100%;
            }

            .products-grid {
                grid-template-columns: 1fr;
                gap: 1.15rem;
                max-width: 100%;
            }

            .product-card-large {
                padding: 1.65rem 1.25rem;
            }

            .product-card-large-icon {
                font-size: 2.6rem;
                margin-bottom: 0.75rem;
            }

            .product-card-large h3 {
                font-size: 1.45rem;
                letter-spacing: 1px;
                margin-bottom: 0.75rem;
            }

            .product-card-large-desc {
                font-size: 0.94rem;
                line-height: 1.65;
                margin-bottom: 1rem;
            }

            .product-card-tags {
                gap: 0.45rem;
                margin-bottom: 1.25rem;
            }

            .product-card-tags span {
                padding: 0.32rem 0.65rem;
                font-size: 0.74rem;
            }

            .product-card-link-text {
                font-size: 0.82rem;
            }
        }
        
        @media (max-width: 768px) {
            nav { padding: 1rem; }
            section { padding: 4rem 1rem; }
            .company-video-section { padding: 4rem 1rem; }
            .company-video-container { grid-template-columns: 1fr; gap: 2rem; }
            .company-video-copy p { max-width: none; }
            .company-video-frame::before { left: 18px; right: 18px; top: -10px; height: 10px; }
            .company-video-fullscreen { top: 0.7rem; right: 0.7rem; width: 40px; height: 40px; }
            .stats-grid { grid-template-columns: 1fr; }
            .customers-grid { grid-template-columns: repeat(3, 1fr); }
            .certs-grid { grid-template-columns: 1fr; }
            .network-stats { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .timeline { padding-left: 40px; }
            .timeline::before { left: 8px; }
            .timeline-item::before { left: -38px; width: 18px; height: 18px; }
            .timeline-item::after { left: -33px; top: 13px; width: 8px; height: 8px; }
            .tab-products-grid { grid-template-columns: minmax(0, 260px); justify-content: center; }
            .tab-certs-grid { grid-template-columns: 1fr; }
            .tabs-nav { gap: 1rem; }
            .tab-btn { font-size: 0.8rem; padding: 1rem 0.3rem; letter-spacing: 1px; }
        }
    
        /* ============ LOGO IMG ============ */
        .logo {
            display: flex;
            align-items: center;
            line-height: 0;
        }
        
        .logo-img {
            height: 80px;
            width: auto;
            display: block;
        }
        
        .footer-logo-img {
            height: 80px;
            width: auto;
            display: block;
            margin-bottom: 1rem;
            filter: brightness(0) invert(1);
            opacity: 0.95;
        }

    
        .current-home-nav {
            width: min(1400px, calc(100% - 4rem));
            max-width: none;
            margin: 0 auto;
            min-height: 88px;
            padding: 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
        }
        .current-home-nav .logo {
            display: inline-flex;
            align-items: center;
            font-size: initial;
            font-weight: initial;
            letter-spacing: 0;
            color: inherit;
        }
        .current-home-nav .logo img {
            height: 64px;
            width: auto;
            display: block;
        }
        .current-home-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 4rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .current-home-nav .nav-link,
        .current-home-nav .nav-trigger {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            border: 0;
            background: transparent;
            color: var(--gray-900);
            cursor: pointer;
            font-size: 0.84rem;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            transition: color 0.25s ease;
            text-decoration: none;
            padding: 0;
        }
        .current-home-nav .nav-link:hover,
        .current-home-nav .nav-trigger:hover,
        .current-home-nav .nav-link.active,
        .current-home-nav .nav-trigger.active,
        .current-home-nav .nav-item.open > .nav-trigger {
            color: var(--accent);
        }
        .current-home-nav .nav-item {
            position: relative;
        }
        .current-home-nav .nav-item[data-nav-dropdown]::after {
            content: "";
            position: absolute;
            left: -0.85rem;
            right: -0.85rem;
            top: 100%;
            height: 1rem;
        }
        .current-home-nav .nav-trigger-caret {
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-top: 5px solid currentColor;
        }
        .current-home-nav .dropdown-menu {
            position: absolute;
            top: calc(100% + 0.55rem);
            left: 50%;
            min-width: 248px;
            padding: 0.75rem;
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 18px 45px rgba(9, 21, 36, 0.08);
            transform: translateX(-50%);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: 0.2s ease;
            z-index: 20;
        }
        .current-home-nav .nav-item:hover .dropdown-menu,
        .current-home-nav .nav-item.open .dropdown-menu,
        .current-home-nav .nav-item:focus-within .dropdown-menu {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }
        .current-home-nav .dropdown-link {
            display: block;
            padding: 0.85rem 0.95rem;
            border-radius: 8px;
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.2s ease;
            text-transform: none;
            letter-spacing: 0;
        }
        .current-home-nav .dropdown-link:hover {
            background: var(--gray-50);
            color: var(--accent);
        }
        @media (max-width: 820px) {
            .current-home-nav {
                width: min(100%, calc(100% - 2.2rem));
                position: relative;
                min-height: 68px;
                padding: 0.55rem 0;
                align-items: center;
                flex-direction: row;
                gap: 0.7rem;
            }
            .current-home-nav .nav-links {
                gap: 1.5rem;
            }
            .current-home-nav .logo img {
                height: 40px;
                max-width: 132px;
                width: auto;
            }
            .current-home-nav .nav-item {
                width: 100%;
            }
            .current-home-nav .nav-item[data-nav-dropdown]::after {
                display: none;
            }
            .current-home-nav .nav-link,
            .current-home-nav .nav-trigger {
                width: 100%;
                min-height: 40px;
                padding: 0.58rem 0.22rem;
                justify-content: space-between;
                letter-spacing: 0.65px;
            }
            .current-home-nav .dropdown-menu {
                position: static;
                top: auto;
                left: auto;
                min-width: 0;
                margin: 0;
                padding: 0.22rem 0 0.48rem 0.72rem;
                border: 0;
                background: transparent;
                box-shadow: none;
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                display: none;
            }
            .current-home-nav .nav-item.open .dropdown-menu {
                display: block;
            }
            .current-home-nav .dropdown-link {
                padding: 0.62rem 0.4rem;
                border-radius: 0;
                font-size: 0.86rem;
            }

        }