:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #10b981;
            --text-dark: #0f172a;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --bg-base: #f8fafc;
            --bg-card: #ffffff;
            --gradient-rainbow: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f59e0b 100%);
            --gradient-rainbow-soft: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(236, 72, 153, 0.05) 50%, rgba(245, 158, 11 0.05) 100%);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 20px -2px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 30px -5px rgba(0,0,0,0.12);
            --radius-md: 12px;
            --radius-lg: 20px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-base);
            color: var(--text-dark);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            position: relative;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        /* 斑斓彩调风的全局装饰元素 */
        .color-blob {
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            filter: blur(100px);
            opacity: 0.15;
            z-index: -1;
            pointer-events: none;
        }
        .blob-1 { top: 10%; left: -100px; background: #4f46e5; }
        .blob-2 { top: 30%; right: -100px; background: #ec4899; }
        .blob-3 { top: 60%; left: -100px; background: #f59e0b; }
        .blob-4 { top: 80%; right: -100px; background: #10b981; }

        /* 顶部导航 */
        .ai-navbar {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            z-index: 1000;
            transition: all 0.3s;
        }
        .ai-nav-container {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 24px;
        }
        .ai-brand {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .ai-page-logo {
            height: 40px;
            object-fit: contain;
        }
        .ai-brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .ai-nav-menu {
            display: flex;
            gap: 24px;
            align-items: center;
        }
        .ai-nav-item {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
        }
        .ai-nav-item:hover {
            color: var(--primary);
        }
        .ai-nav-btn {
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
        }
        .ai-nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* 主容器 */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 区块通用结构 */
        section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px auto;
        }
        .section-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--gradient-rainbow-soft);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 15px;
            border: 1px solid rgba(79, 70, 229, 0.15);
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            margin-bottom: 15px;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.1rem;
        }

        /* 1. Hero首屏 - 严禁图片 */
        .hero-section {
            padding: 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08), transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.08), transparent 40%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(79, 70, 229, 0.2);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 30px;
            box-shadow: var(--shadow-sm);
        }
        .hero-badge span {
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 0.75rem;
        }
        .hero-title-h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-dark);
            margin-bottom: 25px;
            letter-spacing: -1px;
        }
        .hero-title-h1 strong {
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-light);
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
        }
        .btn-primary {
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.25);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(236, 72, 153, 0.35);
        }
        .btn-secondary {
            background: #fff;
            color: var(--text-dark);
            border: 2px solid var(--border-color);
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.2s;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 2. 数据指标卡片 (数字秀) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(226, 232, 240, 0.8);
            position: relative;
            overflow: hidden;
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-rainbow);
        }
        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 600;
        }

        /* 3. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-info h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }
        .about-info p {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }
        .about-feat-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .about-feat-icon {
            color: var(--accent);
            font-size: 1.25rem;
            line-height: 1;
        }
        .about-feat-text h4 {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .about-feat-text p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }
        .about-img-box {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .about-img-box img {
            width: 100%;
            display: block;
            transition: transform 0.5s;
        }
        .about-img-box:hover img {
            transform: scale(1.05);
        }

        /* 4. 全平台AIGC服务体系 - 支持30+大模型 */
        .brand-cloud {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .cloud-title {
            text-align: center;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 30px;
        }
        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .cloud-tag {
            padding: 8px 16px;
            background: var(--bg-base);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-light);
            transition: all 0.2s;
        }
        .cloud-tag:hover {
            background: var(--gradient-rainbow);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(236, 72, 153, 0.2);
        }

        /* 5. 全自动AIGC制作流程 (时间线/步骤) */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            margin-top: 40px;
        }
        .process-flow::before {
            content: '';
            position: absolute;
            top: 45px;
            left: 50px;
            right: 50px;
            height: 4px;
            background: linear-gradient(to right, #4f46e5, #ec4899, #f59e0b, #10b981);
            z-index: 1;
        }
        .process-step {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .step-num {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            box-shadow: var(--shadow-md);
            border: 8px solid var(--bg-base);
        }
        .step-1 .step-num { background: #4f46e5; }
        .step-2 .step-num { background: #ec4899; }
        .step-3 .step-num { background: #f59e0b; }
        .step-4 .step-num { background: #10b981; }
        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .step-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            padding: 0 10px;
        }

        /* 6. 全行业解决方案 (卡片组) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .sol-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 35px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .sol-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .sol-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }
        .sol-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 15px;
        }
        .sol-desc {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 20px;
            height: 72px;
            overflow: hidden;
        }
        .sol-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sol-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            background: var(--bg-base);
            border-radius: 4px;
            color: var(--primary);
            font-weight: 600;
        }

        /* 7. 全国服务网络 */
        .network-section {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 50px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }
        .network-cities {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }
        .city-tag {
            background: var(--bg-base);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 12px;
            text-align: center;
            font-weight: 600;
            color: var(--text-dark);
        }
        .city-tag span {
            display: block;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .network-map-desc h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-dark);
        }
        .network-map-desc p {
            color: var(--text-light);
            margin-bottom: 20px;
        }

        /* 8. 标准化服务与技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .tech-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .tech-list {
            list-style: none;
            margin-top: 20px;
        }
        .tech-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px 0;
            border-bottom: 1px dashed var(--border-color);
        }
        .tech-item:last-child {
            border-bottom: none;
        }
        .tech-marker {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .case-img-container {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #e2e8f0;
        }
        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-info {
            padding: 24px;
        }
        .case-meta {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .case-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* 10. 对比评测 (核心要求) */
        .compare-box {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .compare-hero {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }
        .compare-score {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .score-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .score-meta {
            font-size: 1rem;
            color: var(--text-light);
        }
        .score-stars {
            color: #f59e0b;
            font-size: 1.25rem;
        }
        .compare-table-wrapper {
            overflow-x: auto;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-table th {
            font-weight: 700;
            color: var(--text-dark);
            background: var(--bg-base);
        }
        .compare-table td {
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .highlight-col {
            background: rgba(79, 70, 229, 0.02);
            font-weight: 600;
            color: var(--primary) !important;
        }

        /* 11. 智能需求匹配与表单 (核心表单) */
        .form-section {
            background: radial-gradient(circle at 10% 10%, rgba(79, 70, 229, 0.05), transparent 40%),
                        radial-gradient(circle at 90% 90%, rgba(236, 72, 153, 0.05), transparent 40%);
        }
        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group.full-width {
            grid-column: span 2;
        }
        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-input, .form-select, .form-textarea {
            padding: 12px 16px;
            border: 1.5px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: all 0.2s;
            background: var(--bg-base);
        }
        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        }
        .form-textarea {
            resize: vertical;
            min-height: 120px;
        }
        .form-submit-btn {
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 14px 40px;
            border: none;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: transform 0.2s, box-shadow 0.2s;
            margin-top: 10px;
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
        }
        .form-submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
        }

        /* 12. Token比价参考 */
        .token-section {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            flex-wrap: wrap;
            gap: 15px;
        }
        .token-header h3 {
            font-size: 1.4rem;
            font-weight: 700;
        }

        /* 13 & 14. 职业技术培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .training-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }
        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }
        .training-tag {
            display: inline-block;
            background: rgba(236, 72, 153, 0.1);
            color: var(--secondary);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 700;
            margin-bottom: 15px;
        }
        .training-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .training-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .training-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        /* 15 & 16. 常见用户问题 FAQ & 帮助中心 */
        .faq-layout {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }
        .faq-intro-box {
            background: var(--gradient-rainbow-soft);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(79, 70, 229, 0.1);
        }
        .faq-intro-box h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--primary);
        }
        .faq-intro-box p {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-trigger {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            outline: none;
        }
        .faq-trigger::after {
            content: '+';
            font-size: 1.25rem;
            color: var(--text-muted);
            transition: transform 0.3s;
        }
        .faq-item.active .faq-trigger::after {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: var(--bg-base);
        }
        .faq-inner {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
        }
        .faq-item.active .faq-content {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        /* 17. 常见问题自助排查 */
        .troubleshoot-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .ts-item {
            padding: 20px;
            background: var(--bg-base);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--primary);
        }
        .ts-title {
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .ts-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* 18. 网站术语百科 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .glossary-card {
            background: #fff;
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .glossary-term {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .glossary-def {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* 6条用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .review-quote {
            font-size: 1.5rem;
            color: var(--secondary);
            opacity: 0.2;
            position: absolute;
            top: 20px;
            left: 20px;
            line-height: 1;
        }
        .review-text {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            height: 100px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 4;
            -webkit-box-orient: vertical;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }
        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-rainbow);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .author-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .author-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 19. 行业资讯 / 知识库 */
        .articles-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .article-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .article-item {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 20px;
            border-radius: var(--radius-md);
            background: var(--bg-base);
            border: 1px solid transparent;
            transition: all 0.2s;
        }
        .article-item:hover {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .article-tag-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
        }
        .article-title-link {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .article-title-link:hover {
            color: var(--primary);
        }
        .article-summary {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* 20. 联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }
        .contact-info-panel {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .contact-info-panel h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--text-dark);
        }
        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 30px;
        }
        .contact-method {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .contact-icon {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--gradient-rainbow-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .contact-detail h4 {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 2px;
        }
        .contact-detail p {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .contact-social {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            text-align: center;
        }
        .social-item {
            background: var(--bg-base);
            padding: 15px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: 600;
        }
        .social-item span {
            display: block;
            color: var(--primary);
            font-weight: 700;
            margin-top: 5px;
        }
        .kefu-qrcode-box {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
        }
        .kefu-qrcode-box img {
            width: 180px;
            height: 180px;
            object-fit: contain;
            margin-bottom: 15px;
            border: 1px solid var(--border-color);
            padding: 8px;
            border-radius: 8px;
        }
        .kefu-qrcode-box p {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 5px;
        }
        .kefu-qrcode-box span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 友情链接与系统页脚 */
        .ai-footer {
            background: #0f172a;
            color: #f8fafc;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            max-width: 400px;
        }
        .footer-brand p {
            color: #94a3b8;
            font-size: 0.9rem;
            margin-top: 15px;
            line-height: 1.7;
        }
        .footer-links h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .friend-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            margin-bottom: 30px;
        }
        .friend-links-title {
            font-size: 0.9rem;
            color: #64748b;
            margin-bottom: 15px;
            font-weight: 700;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-links a {
            font-size: 0.85rem;
            color: #94a3b8;
            background: #1e293b;
            padding: 6px 12px;
            border-radius: 4px;
        }
        .friend-links a:hover {
            color: #fff;
            background: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 浮动客服 & 返回顶部 */
        .floating-action {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: all 0.2s;
            position: relative;
        }
        .float-btn:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--text-dark);
        }
        .float-kefu-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 15px;
            box-shadow: var(--shadow-lg);
            display: none;
            width: 180px;
            text-align: center;
        }
        .float-kefu-pop img {
            width: 150px;
            height: 150px;
            object-fit: contain;
            margin-bottom: 8px;
        }
        .float-kefu-pop p {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .float-btn:hover .float-kefu-pop {
            display: block;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .about-grid { grid-template-columns: 1fr; }
            .process-flow { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .process-flow::before { display: none; }
            .solutions-grid { grid-template-columns: repeat(2, 1fr); }
            .case-grid { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: repeat(2, 1fr); }
            .faq-layout { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .ai-nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-color);
            }
            .ai-nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero-title-h1 {
                font-size: 2.25rem;
            }
            .stats-grid { grid-template-columns: 1fr; }
            .solutions-grid { grid-template-columns: 1fr; }
            .case-grid { grid-template-columns: 1fr; }
            .training-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: 1fr; }
            .form-grid { grid-template-columns: 1fr; }
            .form-group.full-width { grid-column: span 1; }
            .tech-grid { grid-template-columns: 1fr; }
            .network-layout { grid-template-columns: 1fr; }
            .troubleshoot-grid { grid-template-columns: 1fr; }
            .glossary-grid { grid-template-columns: 1fr; }
            .article-list { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .compare-hero { flex-direction: column; align-items: flex-start; }
        }