:root {
            --primary: #4F46E5;
            --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
            --bg-light: #F9FAFB;
            --text-dark: #1F2937;
            --text-muted: #4B5563;
            --card-bg: #FFFFFF;
            --border-color: #E5E7EB;
            --success: #10B981;
            --accent: #F59E0B;
        }

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

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

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 9999px;
            transition: all 0.3s ease;
            text-decoration: none;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #FFFFFF;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-gradient);
            color: #FFFFFF;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

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

        .nav-links .ai-page-home-link {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-btn {
            font-size: 14px;
            padding: 8px 20px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* Hero Section (No Images) */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at top right, rgba(124, 58, 237, 0.08), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(236, 72, 153, 0.05), transparent 40%),
                        #FFFFFF;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        /* Metrics Grid */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .metric-card {
            background: var(--card-bg);
            padding: 25px 20px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

        .metric-val {
            font-size: 32px;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* About Us */
        .about-section {
            background: #FFFFFF;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text-muted);
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .about-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
        }

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: #FFFFFF;
            padding: 35px 25px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(79, 70, 229, 0.08);
            border-color: rgba(124, 58, 237, 0.3);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background: rgba(124, 58, 237, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Model Support List - Label Cloud Style */
        .model-cloud-wrapper {
            margin-top: 40px;
            background: #FFFFFF;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .model-cloud-title {
            text-align: center;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.2s;
        }

        .tag:hover {
            background: var(--primary-gradient);
            color: #FFFFFF;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* Creation Section */
        .creation-section {
            background: #FFFFFF;
        }

        .creation-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }

        .creation-item {
            display: flex;
            gap: 20px;
            background: var(--bg-light);
            padding: 25px;
            border-radius: 12px;
        }

        .creation-num {
            font-size: 32px;
            font-weight: 800;
            color: rgba(124, 58, 237, 0.2);
            line-height: 1;
        }

        .creation-body h4 {
            font-size: 18px;
            margin-bottom: 5px;
        }

        .creation-body p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Industry Solutions & Service Network */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            transition: all 0.3s;
        }

        .solution-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .solution-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .solution-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* AIGC Standard & Workflow */
        .workflow-section {
            background: #FFFFFF;
        }

        .workflow-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 30px;
        }

        .workflow-timeline::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
        }

        .workflow-step {
            position: relative;
            z-index: 2;
            width: 18%;
            text-align: center;
        }

        .step-circle {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            margin: 0 auto 15px;
            transition: all 0.3s;
        }

        .workflow-step:hover .step-circle {
            background: var(--primary-gradient);
            color: #FFFFFF;
            border-color: transparent;
            transform: scale(1.1);
        }

        .step-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .step-desc {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Cases Center (Real Images Allowed) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

        .case-img-container {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #E5E7EB;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(124, 58, 237, 0.08);
            color: var(--primary);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .case-info h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Comparison Board */
        .comparison-section {
            background: #FFFFFF;
        }

        .comparison-highlight {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .rating-box {
            background: var(--bg-light);
            border: 2px solid var(--primary);
            padding: 20px 40px;
            border-radius: 16px;
            text-align: center;
        }

        .rating-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .rating-stars {
            color: var(--accent);
            font-size: 20px;
            margin: 5px 0;
        }

        .rating-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        .table-wrapper {
            width: 100%;
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

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

        .compare-table th {
            background: var(--bg-light);
            font-weight: 600;
        }

        .compare-table tr:hover td {
            background: rgba(124, 58, 237, 0.02);
        }

        .highlight-col {
            color: var(--primary);
            font-weight: 600;
            background: rgba(124, 58, 237, 0.02);
        }

        /* Token Price Reference Table */
        .pricing-section {
            background: var(--bg-light);
        }

        .pricing-table-container {
            background: #FFFFFF;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
        }

        /* Professional & AI Training */
        .training-section {
            background: #FFFFFF;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .training-card {
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            background: #FFFFFF;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .training-card:hover {
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border-color: var(--primary);
        }

        .training-badge {
            background: rgba(16, 185, 129, 0.1);
            color: var(--success);
            align-self: flex-start;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .training-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .training-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .training-meta {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

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

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-trigger {
            width: 100%;
            padding: 20px;
            text-align: left;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-icon {
            transition: transform 0.3s;
            font-size: 18px;
            color: var(--primary);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-light);
        }

        .faq-content-inner {
            padding: 20px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-content {
            max-height: 300px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* AI Glossary & Self-troubleshooting */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }

        .glossary-card {
            background: #FFFFFF;
            padding: 25px;
            border-radius: 12px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .glossary-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .glossary-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Reviews Section */
        .reviews-section {
            background: #FFFFFF;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: var(--bg-light);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
        }

        .author-info h5 {
            font-size: 15px;
            font-weight: 600;
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Knowledge Base / Latest Articles */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s;
        }

        .article-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .article-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 15px;
        }

        .article-card a:hover {
            text-decoration: underline;
        }

        /* Smart Matching Form & Contact & Franchise */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-container {
            background: #FFFFFF;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s;
            outline: none;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        .contact-sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .sidebar-card {
            background: #FFFFFF;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .sidebar-card h4 {
            font-size: 18px;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .qr-wrapper {
            text-align: center;
            margin-top: 15px;
        }

        .qr-wrapper img {
            max-width: 150px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 5px;
        }

        .contact-info-list {
            list-style: none;
        }

        .contact-info-list li {
            font-size: 14px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* Footer & Links */
        footer {
            background: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px;
            font-size: 14px;
        }

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

        .footer-logo img {
            height: 35px;
            margin-bottom: 15px;
        }

        .footer-title {
            color: #FFFFFF;
            font-weight: 600;
            margin-bottom: 20px;
            font-size: 15px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 10px;
        }

        .friendship-links a {
            background: #1F2937;
            color: #9CA3AF;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            text-decoration: none;
            transition: all 0.3s;
        }

        .friendship-links a:hover {
            color: #FFFFFF;
            background: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* Floating Widgets */
        .floating-widgets {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .widget-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #FFFFFF;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .widget-btn:hover {
            background: var(--primary-gradient);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .widget-btn svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }

        .widget-qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
        }

        .widget-qr-popover img {
            width: 120px;
            height: 120px;
        }

        .widget-qr-popover p {
            font-size: 11px;
            color: var(--text-dark);
            margin-top: 5px;
            white-space: nowrap;
        }

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

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .cases-grid, .training-grid, .reviews-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .creation-list, .glossary-grid {
                grid-template-columns: 1fr;
            }
            .workflow-timeline {
                flex-direction: column;
                gap: 20px;
            }
            .workflow-timeline::before {
                display: none;
            }
            .workflow-step {
                width: 100%;
                display: flex;
                align-items: center;
                text-align: left;
                gap: 15px;
            }
            .step-circle {
                margin: 0;
            }
            .hero h1 {
                font-size: 28px;
            }
            .services-grid, .cases-grid, .training-grid, .reviews-grid, .articles-grid, .solutions-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }