:root {
            --primary: #FF6B00;
            --primary-hover: #E05E00;
            --primary-light: #FFF0E6;
            --dark: #1F1F1F;
            --text-dark: #2C2C2C;
            --text-muted: #666666;
            --bg-light: #FAFAF9;
            --bg-white: #FFFFFF;
            --border-color: #EAEAEA;
            --shadow-sm: 0 2px 8px rgba(255, 107, 0, 0.05);
            --shadow-md: 0 8px 24px rgba(255, 107, 0, 0.08);
            --shadow-lg: 0 16px 36px rgba(255, 107, 0, 0.12);
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* Typography */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header p {
            color: var(--primary);
            text-transform: uppercase;
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
        }

        .section-header .desc {
            color: var(--text-muted);
            max-width: 600px;
            margin: 15px auto 0 auto;
            font-size: 1.05rem;
        }

        /* Header Navigation */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            backdrop-filter: blur(10px);
        }

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

        .logo-box {
            display: flex;
            align-items: center;
        }

        .logo-box img {
            height: 45px;
            display: block;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            align-items: center;
        }

        .nav-menu a {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn-nav {
            padding: 8px 18px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-nav-outline {
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-nav-outline:hover {
            background-color: var(--primary-light);
        }

        .btn-nav-primary {
            background-color: var(--primary);
            color: #fff !important;
        }

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

        /* Mobile Nav Toggle */
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }

        /* Hero Section (No Images Allowed) */
        .hero {
            background: linear-gradient(135deg, #FFF9F5 0%, #FFEBE0 100%);
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 80%;
            background: radial-gradient(circle, rgba(255, 107, 0, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 50%;
            height: 80%;
            background: radial-gradient(circle, rgba(255, 107, 0, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            display: inline-block;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 35px;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .btn-hero {
            padding: 15px 35px;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: 700;
            transition: all 0.3s ease;
        }

        .btn-hero-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
        }

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

        .btn-hero-secondary {
            background-color: var(--bg-white);
            color: var(--dark);
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .btn-hero-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .hero-badge-list {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .hero-badge-list span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-badge-list span::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }

        /* Data Metrics Card Section */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .metric-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border-top: 4px solid var(--primary);
            transition: transform 0.3s ease;
        }

        .metric-card:hover {
            transform: translateY(-5px);
        }

        .metric-card h3 {
            font-size: 2.2rem;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 5px;
        }

        .metric-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 600;
        }

        /* About Us Section */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .about-list {
            list-style: none;
            margin-top: 25px;
        }

        .about-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 15px;
            font-weight: 500;
        }

        .about-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--primary);
            font-weight: bold;
        }

        .about-info-card {
            background-color: var(--primary-light);
            border: 1px dashed var(--primary);
            border-radius: 12px;
            padding: 30px;
        }

        .about-info-card h4 {
            font-size: 1.25rem;
            color: var(--primary-hover);
            margin-bottom: 15px;
        }

        .about-info-item {
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .about-info-item strong {
            color: var(--dark);
        }

        /* Platform list & capabilities */
        .platform-logos {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
        }

        .platform-tag {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            box-shadow: var(--shadow-sm);
        }

        .platform-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* AIGC Services & Capabilities Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            height: 4px;
            width: 0;
            background-color: var(--primary);
            transition: width 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .service-card:hover::after {
            width: 100%;
        }

        .service-icon {
            font-size: 2.2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Scenario Section */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 25px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .scenario-card:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }

        .scenario-card h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* Technical Standards */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .tech-box {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            border-left: 5px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .tech-box h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .tech-box p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* National Network Style */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-map-sim {
            background-color: var(--primary-light);
            border-radius: 12px;
            padding: 40px;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
        }

        .network-node {
            position: absolute;
            background-color: var(--primary);
            color: #fff;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: bold;
        }

        /* Case Center */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

        .case-image-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Comparison Table */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: var(--bg-white);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: var(--primary-light);
            color: var(--dark);
            font-weight: 700;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .badge-premium {
            background-color: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .badge-standard {
            background-color: #E2E8F0;
            color: #4A5568;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
        }

        /* FAQ Schema UI (Accordion) */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-title {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            user-select: none;
        }

        .faq-title::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-title::after {
            content: '−';
        }

        .faq-item.active .faq-content {
            max-height: 300px;
            padding: 18px 24px;
            border-top: 1px solid var(--border-color);
        }

        /* Customer Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .review-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .review-author h4 {
            font-size: 1rem;
            color: var(--dark);
        }

        .review-author p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .review-body {
            font-size: 0.95rem;
            color: var(--text-dark);
            font-style: italic;
        }

        /* Token Price Table Section */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .token-pricing-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .token-pricing-card.highlighted {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .token-pricing-card.highlighted::before {
            content: '全网极低';
            position: absolute;
            top: 15px;
            right: 15px;
            background-color: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .token-pricing-card h4 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .token-pricing-card .price {
            font-size: 2rem;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 20px;
        }

        .token-pricing-card ul {
            list-style: none;
            text-align: left;
            margin-bottom: 25px;
        }

        .token-pricing-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* Form styling */
        .form-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: start;
        }

        .form-box {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        .btn-submit {
            background-color: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: background-color 0.3s ease;
        }

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

        .contact-info-grid {
            display: grid;
            gap: 20px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .contact-item-icon {
            font-size: 1.5rem;
            color: var(--primary);
        }

        .contact-item-content h5 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--dark);
        }

        .contact-item-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .qr-box {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .qr-card {
            background-color: #fff;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            text-align: center;
            flex: 1;
        }

        .qr-card img {
            width: 100%;
            max-width: 120px;
            height: auto;
            margin-bottom: 8px;
        }

        .qr-card p {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        /* News & Knowledge base */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .news-header {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--primary-light);
        }

        .news-tag {
            background-color: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .news-body-content {
            padding: 24px;
        }

        .news-title-link {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            display: block;
            margin-bottom: 12px;
        }

        .news-title-link:hover {
            color: var(--primary);
        }

        .news-meta-info {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Footer links */
        footer {
            background-color: var(--dark);
            color: #E2E8F0;
            padding: 60px 0 30px 0;
            border-top: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1.1rem;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }

        .footer-links-group {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
        }

        .footer-links-group a {
            color: #A0AEC0;
            font-size: 0.9rem;
        }

        .footer-links-group a:hover {
            color: var(--primary);
        }

        .footer-friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }

        .footer-friend-links a {
            color: #A0AEC0;
            font-size: 0.85rem;
            background-color: #2D3748;
            padding: 4px 10px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .footer-friend-links a:hover {
            color: #fff;
            background-color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid #2D3748;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #718096;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* Floating Widgets */
        .floating-widget {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .widget-btn {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .widget-btn:hover {
            background-color: var(--primary);
            border-color: var(--primary);
        }

        .widget-btn:hover svg {
            fill: #fff;
        }

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

        .widget-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #fff;
            border-radius: 8px;
            padding: 15px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            width: 180px;
            text-align: center;
        }

        .widget-btn:hover .widget-popover {
            display: block;
        }

        .widget-popover img {
            width: 100%;
            height: auto;
            margin-bottom: 5px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .metrics-grid, .services-grid, .case-grid, .reviews-grid, .token-pricing-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .network-layout, .form-layout, .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-top: 1px solid var(--border-color);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .metrics-grid, .services-grid, .case-grid, .reviews-grid, .token-pricing-grid, .news-grid, .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
        }