/* CSS Variables - 春绿薄荷清新风 */
        :root {
            --primary: #10B981;
            --primary-hover: #059669;
            --primary-light: #E6F4EA;
            --primary-bg: #F0FDF4;
            --secondary: #34D399;
            --dark: #064E3B;
            --text-main: #1F2937;
            --text-muted: #4B5563;
            --white: #FFFFFF;
            --border-color: #D1FAE5;
            --shadow-sm: 0 2px 4px rgba(16, 185, 129, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(16, 185, 129, 0.1), 0 2px 4px -1px rgba(16, 185, 129, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(16, 185, 129, 0.1), 0 4px 6px -2px rgba(16, 185, 129, 0.05);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }

        /* Reset Styles */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--primary-bg);
            line-height: 1.6;
        }
        body {
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* Container Layout */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Shared Components */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--white) !important;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--white);
            color: var(--primary) !important;
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }
        
        .section {
            padding: 80px 0;
            background-color: var(--white);
            border-bottom: 1px solid var(--border-color);
        }
        .section-alt {
            padding: 80px 0;
            background-color: var(--primary-bg);
            border-bottom: 1px solid var(--border-color);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
        }

        /* 1. Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
        }
        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-box {
            display: flex;
            align-items: center;
        }
        .logo-box img {
            max-height: 45px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 0.95rem;
            color: var(--text-main);
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        /* 2. Hero Section (No Image Allowed) */
        .hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #F0FDF4 0%, #ECFDF5 50%, #D1F2EB 100%);
            text-align: center;
            position: relative;
        }
        .hero-h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 800;
        }
        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px;
        }
        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
            background: var(--white);
            padding: 25px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .stat-item h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 5px;
        }
        .stat-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 3. About Us & Platform Intro */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-content h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }
        .about-content p {
            margin-bottom: 20px;
            color: var(--text-muted);
            text-align: justify;
        }
        .about-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .feature-card {
            background-color: var(--primary-bg);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .feature-card h4 {
            color: var(--dark);
            margin-bottom: 8px;
            font-size: 1.1rem;
        }
        .feature-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 4. AIGC Services & Models */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 50px;
        }
        .service-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 25px;
            text-align: center;
            transition: all 0.3s;
            box-shadow: var(--shadow-sm);
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .service-card .icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .service-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .model-cloud {
            text-align: center;
            background: var(--primary-bg);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .model-cloud h3 {
            margin-bottom: 25px;
            color: var(--dark);
        }
        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .cloud-tag {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
        }
        .cloud-tag:hover {
            background: var(--primary);
            color: var(--white);
            transform: scale(1.05);
        }

        /* 5. One-stop Production & Workflow */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--primary-light);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--white);
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }
        .left {
            left: 0;
        }
        .right {
            left: 50%;
        }
        .right::after {
            left: -10px;
        }
        .timeline-content {
            padding: 20px 30px;
            background-color: var(--primary-bg);
            position: relative;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 6. Technical Standards */
        .standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .standard-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }
        .standard-item h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .standard-item h3::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }
        .standard-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 7. Solutions & Cases */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }
        .solution-card {
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .solution-info {
            padding: 25px;
        }
        .solution-info h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .solution-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }
        .case-gallery {
            text-align: center;
        }
        .case-images-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 30px;
        }
        .case-img-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .case-img-box img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .case-img-box:hover img {
            transform: scale(1.05);
        }
        .case-banner-box {
            margin-top: 30px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .case-banner-box img {
            width: 100%;
            height: auto;
        }

        /* 8. Service Network & Agency */
        .network-agency-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }
        .network-box h3, .agency-box h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 15px;
        }
        .network-box p, .agency-box p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .agency-features {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .agency-feature-item {
            background: var(--white);
            padding: 15px;
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .agency-feature-item h4 {
            color: var(--dark);
            margin-bottom: 5px;
        }
        .agency-feature-item p {
            margin: 0;
            font-size: 0.85rem;
        }

        /* 9. Evaluation & Token Comparison */
        .comparison-wrapper {
            margin-bottom: 60px;
        }
        .eval-badge {
            background-color: var(--primary-light);
            color: var(--dark);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            margin-bottom: 30px;
            border: 1px solid var(--primary);
        }
        .eval-badge h3 {
            font-size: 1.8rem;
            margin-bottom: 5px;
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: var(--white);
            min-width: 600px;
        }
        th, td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        th {
            background-color: var(--primary-light);
            color: var(--dark);
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .highlight-row {
            background-color: rgba(16, 185, 129, 0.05);
            font-weight: 500;
        }

        /* 10. Training Programs */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }
        .training-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }
        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .training-card h3 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .training-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 11. Form Section (Smart Match) */
        .form-section {
            background: linear-gradient(135deg, var(--white) 0%, var(--primary-bg) 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .form-wrapper {
            max-width: 650px;
            margin: 0 auto;
            background: var(--white);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            color: var(--text-main);
            outline: none;
            transition: border-color 0.3s;
            background-color: var(--primary-bg);
        }
        .form-control:focus {
            border-color: var(--primary);
            background-color: var(--white);
        }
        .form-wrapper button {
            width: 100%;
        }

        /* 12. Troubleshooting & Glossary & FAQ */
        .faq-help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-header {
            padding: 15px 20px;
            background-color: var(--white);
            color: var(--dark);
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background-color 0.3s;
        }
        .accordion-header:hover {
            background-color: var(--primary-bg);
        }
        .accordion-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            background-color: var(--white);
            color: var(--text-muted);
            font-size: 0.9rem;
            border-top: 0 solid var(--border-color);
        }
        .accordion-item.active .accordion-content {
            padding: 15px 20px;
            border-top-width: 1px;
        }
        .accordion-header::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s;
        }
        .accordion-item.active .accordion-header::after {
            content: '−';
            transform: rotate(180deg);
        }

        /* 13. Customer Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .review-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 25px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .review-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
        }
        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-user-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }
        .review-user-info span {
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* 14. Knowledge Base / News */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }
        .news-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 15px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .news-card h4 {
            font-size: 0.9rem;
            color: var(--dark);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card a {
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* 15. Contact Section */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .contact-info h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 20px;
        }
        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 30px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .contact-item strong {
            color: var(--dark);
        }
        .kefu-box {
            text-align: center;
            background: var(--primary-bg);
            padding: 30px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .kefu-box img {
            margin: 0 auto 15px;
            max-width: 150px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        /* 16. Footer & Friendly Links */
        .footer {
            background-color: var(--dark);
            color: #D1FAE5;
            padding: 50px 0 20px;
            font-size: 0.9rem;
            border-top: 3px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 1rem;
        }
        .footer-col p, .footer-col ul li {
            margin-bottom: 10px;
            color: #A7F3D0;
        }
        .footer-col ul li a {
            color: #A7F3D0;
        }
        .footer-col ul li a:hover {
            color: var(--white);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friendly-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
        }
        .friendly-links a {
            color: #A7F3D0;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 4px 8px;
            border-radius: 4px;
        }
        .friendly-links a:hover {
            color: var(--white);
            background-color: rgba(255, 255, 255, 0.15);
        }

        /* Float Customer Service */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 80px;
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 15px;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            text-align: center;
            max-width: 130px;
        }
        .float-kefu img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
        }
        .float-kefu span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: bold;
            display: block;
        }
        .back-to-top {
            position: fixed;
            right: 20px;
            bottom: 20px;
            width: 45px;
            height: 45px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            z-index: 999;
            transition: all 0.3s;
            opacity: 0;
            pointer-events: none;
        }
        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background-color: var(--primary-hover);
            transform: translateY(-3px);
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .services-grid, .solutions-grid, .case-images-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid, .news-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 15px;
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-h1 {
                font-size: 2rem;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .network-agency-grid, .faq-help-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 21px;
            }
            .right {
                left: 0%;
            }
            .services-grid, .solutions-grid, .case-images-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }