/* ========== CSS Variables ========== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0d1f33;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --text-dark: #1a1a2e;
            --text-medium: #4a4a5a;
            --text-light: #7a7a8a;
            --bg-white: #ffffff;
            --bg-light: #f5f7fa;
            --bg-dark: #0d1f33;
            --border-color: #e0e4e8;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            color: var(--text-dark);
            background: var(--bg-white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        img { max-width: 100%; height: auto; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

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

        /* ========== Header & Navigation ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

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

        .logo img {
            height: 36px;
            width: auto;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text .cn {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 2px;
        }

        .logo-text .en {
            font-size: 11px;
            font-weight: 500;
            color: var(--text-light);
            letter-spacing: 1px;
            text-transform: lowercase;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            padding: 8px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-medium);
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

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

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 16px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ========== Page Sections ========== */
        .page {
            display: none;
            padding-top: 72px;
        }

        .page.active {
            display: block;
        }

        /* ========== Hero Section ========== */
        .hero {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 20px;
            font-size: 13px;
            color: rgba(255,255,255,0.9);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            color: var(--accent-light);
        }

        .hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 560px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232,168,56,0.3);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255,255,255,0.4);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .hero-visual {
            position: absolute;
            right: -40px;
            top: 50%;
            transform: translateY(-50%);
            width: 500px;
            height: 500px;
            opacity: 0.15;
        }

        .hero-visual svg {
            width: 100%;
            height: 100%;
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            background: var(--bg-white);
            padding: 40px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-item .stat-number span {
            font-size: 20px;
            font-weight: 500;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 8px;
        }

        /* ========== Section Common ========== */
        .section {
            padding: 80px 0;
        }

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== Products Grid ========== */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .product-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

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

        .product-card:hover::before {
            opacity: 1;
        }

        .product-icon {
            width: 100%;
            height: 140px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            overflow: hidden;
        }

        .product-icon svg {
            width: 28px;
            height: 28px;
            fill: #fff;
        }

        .product-icon img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .product-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .product-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .product-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .product-link:hover {
            gap: 10px;
            color: var(--primary-light);
        }

        /* ========== Product Evolution Section ========== */
        .evolution-section {
            background: var(--bg-light);
        }

        .evolution-timeline {
            position: relative;
            max-width: 1100px;
            margin: 0 auto;
        }

        .evolution-timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            transform: translateX(-50%);
            border-radius: 2px;
        }

        .evolution-item {
            display: flex;
            align-items: center;
            margin-bottom: 60px;
            position: relative;
        }

        .evolution-item:last-child {
            margin-bottom: 0;
        }

        .evolution-item:nth-child(odd) {
            flex-direction: row;
        }

        .evolution-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .evolution-visual {
            flex: 1;
            padding: 0 40px;
        }

        .evolution-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .evolution-info {
            flex: 1;
            padding: 0 40px;
        }

        .evolution-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            margin-bottom: 12px;
        }

        .evolution-item:nth-child(2) .evolution-badge {
            background: linear-gradient(135deg, var(--primary-light), #3a7abd);
        }

        .evolution-item:nth-child(3) .evolution-badge {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--text-dark);
        }

        .evolution-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .evolution-info .evolution-subtitle {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .evolution-info p {
            font-size: 14px;
            color: var(--text-medium);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .evolution-features {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .evolution-features .product-tag {
            font-size: 12px;
            padding: 4px 12px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            color: var(--text-medium);
        }

        .evolution-dot {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-light);
            z-index: 2;
        }

        .evolution-item:nth-child(2) .evolution-dot {
            background: var(--primary-light);
        }

        .evolution-item:nth-child(3) .evolution-dot {
            background: var(--accent);
        }

        /* ========== Features Section ========== */
        .features-section {
            background: var(--bg-light);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-item {
            display: flex;
            gap: 20px;
            padding: 28px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-md);
        }

        .feature-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: rgba(26,58,92,0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .feature-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

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

        /* ========== About Page ========== */
        .about-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 100px 0 80px;
            color: #fff;
        }

        .about-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .about-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.7;
        }

        .about-content {
            padding: 80px 0;
        }

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

        .about-text h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

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

        .about-visual {
            background: linear-gradient(135deg, var(--bg-light), #e8ecf0);
            border-radius: var(--radius-lg);
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .about-visual::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            opacity: 0.1;
        }

        .about-visual svg {
            width: 120px;
            height: 120px;
            opacity: 0.3;
        }

        .timeline {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .timeline-items {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
        }

        .timeline-items::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }

        .timeline-item {
            display: flex;
            gap: 24px;
            margin-bottom: 36px;
            position: relative;
        }

        .timeline-dot {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            z-index: 1;
        }

        .timeline-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .timeline-content p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== Products Page ========== */
        .products-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 100px 0 80px;
            color: #fff;
        }

        .products-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .products-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.7;
        }

        .product-detail {
            padding: 60px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .product-detail:nth-child(even) {
            background: var(--bg-light);
        }

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

        .product-detail-grid.reverse {
            direction: rtl;
        }

        .product-detail-grid.reverse > * {
            direction: ltr;
        }

        .product-detail-visual {
            background: linear-gradient(135deg, #e8ecf0, #d0d8e0);
            border-radius: var(--radius-lg);
            height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .product-detail-visual svg {
            width: 80px;
            height: 80px;
            opacity: 0.3;
        }

        .product-detail-info h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .product-detail-info p {
            font-size: 15px;
            color: var(--text-medium);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .product-features-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .product-tag {
            padding: 6px 14px;
            background: rgba(26,58,92,0.06);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: 6px;
        }

        /* ========== Contact Page ========== */
        .contact-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 100px 0 80px;
            color: #fff;
        }

        .contact-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .contact-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.7;
        }

        .contact-content {
            padding: 80px 0;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .contact-info-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-card {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }

        .contact-card-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-card-icon svg {
            width: 22px;
            height: 22px;
            fill: #fff;
        }

        .contact-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .contact-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        .contact-form {
            background: var(--bg-white);
            padding: 36px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .contact-form h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-family: inherit;
            color: var(--text-dark);
            transition: var(--transition);
            background: var(--bg-white);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26,58,92,0.1);
        }

        .form-group textarea {
            height: 120px;
            resize: vertical;
        }

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

        .btn-submit {
            width: 100%;
            padding: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background: var(--primary-light);
        }

        /* ========== News Page ========== */
        .news-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 100px 0 80px;
            color: #fff;
        }

        .news-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .news-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.7;
        }

        .news-tabs {
            display: flex;
            gap: 8px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .news-tab {
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-medium);
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            cursor: pointer;
            transition: var(--transition);
        }

        .news-tab:hover,
        .news-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            padding-bottom: 60px;
        }

        .news-card {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 32px;
            padding: 28px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
        }

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

        .news-card-img {
            width: 100%;
            height: 180px;
            background: linear-gradient(135deg, var(--bg-light), #dde2e8);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .news-card-img svg {
            width: 48px;
            height: 48px;
            opacity: 0.2;
        }

        .news-card-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-card-meta {
            display: flex;
            gap: 16px;
            margin-bottom: 12px;
        }

        .news-card-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(232,168,56,0.1);
            padding: 3px 10px;
            border-radius: 4px;
        }

        .news-card-date {
            font-size: 13px;
            color: var(--text-light);
        }

        .news-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-footer {
            margin-top: 16px;
        }

        .news-read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .news-read-more:hover {
            gap: 10px;
            color: var(--primary-light);
        }

        /* ========== News Pagination ========== */
        .news-pagination {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 40px;
            padding: 20px 0;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border: 1px solid var(--border, #e0e0e0);
            border-radius: var(--radius-sm, 6px);
            background: var(--bg-white, #fff);
            color: var(--text, #333);
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s ease;
            user-select: none;
        }

        .page-btn:hover:not(.disabled):not(.active) {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(26, 58, 92, 0.04);
        }

        .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            cursor: default;
        }

        .page-btn.disabled {
            color: #ccc;
            cursor: not-allowed;
            border-color: var(--border, #e0e0e0);
        }

        .page-ellipsis {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            color: var(--text-light, #999);
            font-size: 14px;
            user-select: none;
        }

        .page-info {
            margin-left: 16px;
            font-size: 13px;
            color: var(--text-light, #999);
            white-space: nowrap;
        }

        /* ========== News Detail Page ========== */
        .news-detail-page {
            padding: 40px 0 80px;
        }

        .news-detail-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 32px;
        }

        .news-detail-breadcrumb a {
            color: var(--primary);
            cursor: pointer;
        }

        .news-detail-breadcrumb a:hover {
            text-decoration: underline;
        }

        .news-detail-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .news-detail-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .news-detail-meta {
            display: flex;
            gap: 24px;
            font-size: 14px;
            color: var(--text-light);
        }

        .news-detail-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-detail-content {
            /* max-width: 800px; */
            font-size: 16px;
            color: var(--text-medium);
            line-height: 1.9;
        }

        .news-detail-content p {
            margin-bottom: 20px;
        }

        .news-detail-content h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 36px 0 16px;
        }

        .news-detail-content img,
        .news-detail-content .news-detail-img-placeholder {
            width: 100%;
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .news-detail-img-placeholder {
            height: 360px;
            background: linear-gradient(135deg, var(--bg-light), #dde2e8);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .news-detail-img-placeholder svg {
            width: 64px;
            height: 64px;
            opacity: 0.15;
        }

        .news-detail-sidebar {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }

        .news-detail-sidebar h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

        .news-related-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-related-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .news-related-item:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
        }

        .news-related-item .related-date {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 12px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
        }

        .news-related-item .related-date .day {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.1;
        }

        .news-related-item .related-date .month {
            font-size: 11px;
            opacity: 0.8;
        }

        .news-related-item h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 4px;
        }

        .news-related-item p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ========== Product Single Detail Page ========== */
        .product-single-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 100px 0 60px;
            color: #fff;
        }

        .product-single-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-bottom: 24px;
        }

        .product-single-hero .breadcrumb a {
            color: rgba(255,255,255,0.8);
            cursor: pointer;
        }

        .product-single-hero .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .product-single-hero h1 {
            font-size: 40px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .product-single-hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            line-height: 1.7;
        }

        .product-single-content {
            padding: 60px 0;
        }

        .product-single-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }

        .product-main-info {
            padding-right: 24px;
        }

        .product-main-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .product-main-info > p {
            font-size: 15px;
            color: var(--text-medium);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .product-detail-img {
            margin: 24px 0 32px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .product-detail-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        .product-feature-blocks {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 32px 0;
        }

        .product-feature-block {
            padding: 24px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }

        .product-feature-block h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .product-feature-block p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .product-sidebar {
            position: sticky;
            top: 96px;
        }

        .product-sidebar-card {
            padding: 28px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .product-sidebar-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .product-sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .product-sidebar-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-medium);
            cursor: pointer;
            transition: var(--transition);
        }

        .product-sidebar-item:hover {
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .product-sidebar-item .check-icon {
            width: 18px;
            height: 18px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .product-sidebar-item .check-icon svg {
            width: 10px;
            height: 10px;
            fill: #fff;
        }

        .product-cta-card {
            padding: 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-md);
            color: #fff;
            text-align: center;
        }

        .product-cta-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .product-cta-card p {
            font-size: 14px;
            color: rgba(255,255,255,0.8);
            margin-bottom: 20px;
            line-height: 1.6;
        }

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

        /* ========== Footer ========== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo .cn {
            color: #fff;
        }

        .footer-brand .logo .en {
            color: rgba(255,255,255,0.5);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.5);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .evolution-item {
                flex-direction: column !important;
                margin-bottom: 30px;
            }
            .evolution-visual,
            .evolution-info {
                padding: 0 20px;
            }
            .evolution-timeline::before {
                left: 20px;
            }
            .evolution-dot {
                left: 20px;
                top: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav { display: none; }
            .mobile-toggle { display: flex; }
            .hero h1 { font-size: 32px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .products-grid { grid-template-columns: 1fr !important; }
            .features-grid { grid-template-columns: 1fr; }
            .about-grid,
            .product-detail-grid,
            .contact-grid { grid-template-columns: 1fr; }
            .product-detail-grid.reverse { direction: ltr; }
            .news-card { grid-template-columns: 1fr; }
            .news-card-img { height: 200px; }
            .news-pagination { gap: 4px; }
            .page-btn { min-width: 34px; height: 34px; padding: 0 8px; font-size: 13px; }
            .page-info { margin-left: 0; width: 100%; text-align: center; margin-top: 8px; }
            .product-single-grid { grid-template-columns: 1fr; }
            .product-feature-blocks { grid-template-columns: 1fr; }
            .form-row { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 28px; }
            .product-icon { height: 180px; }
            .evolution-section { padding: 30px 0; }
            .evolution-timeline { max-width: 100%; }
            .section { padding: 40px 0; }
            .evolution-timeline::before {
                left: 12px;
            }
            .evolution-dot {
                left: 12px;
                width: 14px;
                height: 14px;
            }
            .evolution-visual,
            .evolution-info {
                padding: 0 0 0 40px;
            }
            .evolution-info h3 {
                font-size: 18px;
            }
            .product-card {
                padding: 20px;
            }
            .product-card h3 {
                font-size: 18px;
            }
            .product-card p {
                font-size: 13px;
            }
            .section-header {
                text-align: center;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 14px;
            }
        }

        
        /* ========== About Info Cards ========== */
        .about-info-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

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

        .about-info-card p {
            font-size: 14px;
            color: var(--text-medium);
            line-height: 1.8;
            margin-bottom: 8px;
        }

        /* ========== Timeline Cards ========== */
        .timeline-card {
            background: var(--bg-white);
            border-left: 4px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .timeline-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

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

        @media (max-width: 768px) {
            .timeline-items[style*="grid-template-columns"] {
                grid-template-columns: 1fr !important;
            }
        }

        /* ========== Animations ========== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(24px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }