:root {
            --primary: #6366f1;
            --primary-light: #818cf8;
            --primary-dark: #4f46e5;
            --accent: #ec4899;
            --accent-light: #f472b6;
            --bg-base: #fafaff;
            --bg-card: rgba(255, 255, 255, 0.85);
            --text-dark: #0f172a;
            --text-medium: #334155;
            --text-light: #64748b;
            --border-color: rgba(99, 102, 241, 0.12);
            --gradient-holo: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 50%, rgba(56, 189, 248, 0.1) 100%);
            --gradient-holo-solid: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #38bdf8 100%);
            --shadow-sm: 0 2px 8px rgba(99, 102, 241, 0.05);
            --shadow-md: 0 8px 30px rgba(99, 102, 241, 0.08);
            --shadow-lg: 0 20px 40px rgba(99, 102, 241, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --max-width: 1200px;
        }

        * {
            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;
            background-color: var(--bg-base);
            color: var(--text-dark);
            line-height: 1.6;
        }

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

        /* 统一背景纹理（镭射幻彩氛围） */
        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.03) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.03) 0%, transparent 50%);
            z-index: -2;
            pointer-events: none;
        }

        /* 全局容器 */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 250, 255, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
            display: block;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: var(--gradient-holo-solid);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 0.5px;
        }

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

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

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

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-holo-solid);
            transition: width 0.3s;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-btn {
            background: var(--gradient-holo-solid);
            color: white !important;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600 !important;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
        }

        .nav-btn::after {
            display: none !important;
        }

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

        /* 移动端导航响应式处理由 JS 在后面动态控制，基础样式为隐藏 */

        /* 通用 Section 样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(99, 102, 241, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            border: 1px solid rgba(99, 102, 241, 0.15);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

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

        /* 1. Hero 首屏 - 严禁出现任何图片 */
        .hero-section {
            padding: 100px 0 120px 0;
            position: relative;
            background: var(--gradient-holo);
            overflow: hidden;
            display: flex;
            align-items: center;
        }

        .hero-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--primary-light);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 24px;
            backdrop-filter: blur(5px);
            box-shadow: var(--shadow-sm);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        /* 改写后的 H1，限制在20字内 */
        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-dark);
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-title span {
            background: var(--gradient-holo-solid);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-medium);
            max-width: 750px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

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

        .btn-primary {
            background: var(--gradient-holo-solid);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(99, 102, 241, 0.45);
        }

        .btn-secondary {
            background: white;
            color: var(--text-dark);
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .btn-secondary:hover {
            background: #f8fafc;
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 装饰背景几何元素（非图片） */
        .hero-shape-1 {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
            top: -50px;
            left: -50px;
            z-index: 1;
        }

        .hero-shape-2 {
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.12) 0%, transparent 70%);
            bottom: -100px;
            right: -50px;
            z-index: 1;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 24px;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-content p {
            color: var(--text-medium);
            margin-bottom: 16px;
            font-size: 15px;
            line-height: 1.7;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 14px;
        }

        .about-feat-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        /* 软件介绍 / 平台介绍模块 */
        .software-intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-md);
            backdrop-filter: blur(10px);
        }

        .software-intro-card h4 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--primary-dark);
            font-weight: 700;
        }

        .software-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .software-tag {
            background: rgba(99, 102, 241, 0.05);
            border: 1px solid rgba(99, 102, 241, 0.1);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--text-medium);
        }

        /* 3. 全平台AIGC服务体系 & 支撑平台 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-holo-solid);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, 0.3);
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(99, 102, 241, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 24px;
        }

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

        .service-card p {
            font-size: 14px;
            color: var(--text-light);
            flex-grow: 1;
        }

        /* 支撑平台徽章组 */
        .platform-wrapper {
            margin-top: 50px;
            background: rgba(255, 255, 255, 0.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            text-align: center;
        }

        .platform-wrapper h4 {
            font-size: 18px;
            margin-bottom: 20px;
            color: var(--text-medium);
            font-weight: 700;
        }

        .platform-badge-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .platform-badge {
            background: white;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            color: var(--text-medium);
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
        }

        .platform-badge:hover {
            border-color: var(--primary);
            transform: scale(1.05);
            color: var(--primary-dark);
        }

        /* 4. 全自动AIGC制作流程 & 7. 标准化服务全流程 & 20. 时间线组件 */
        .flow-container {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding-left: 32px;
            border-left: 2px solid var(--border-color);
        }

        .flow-step {
            position: relative;
            margin-bottom: 48px;
        }

        .flow-step:last-child {
            margin-bottom: 0;
        }

        .flow-number {
            position: absolute;
            left: -48px;
            top: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--gradient-holo-solid);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
        }

        .flow-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .flow-content h4 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .flow-content p {
            font-size: 14px;
            color: var(--text-medium);
        }

        /* 5. 全行业解决方案 & 20. 价格参考等卡片组件 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .solution-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
            transition: transform 0.3s;
        }

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

        .solution-img-box {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: #eee;
        }

        .solution-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .solution-info {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

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

        .solution-info p {
            font-size: 14px;
            color: var(--text-medium);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .solution-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: auto;
        }

        .solution-price {
            font-size: 16px;
            font-weight: 800;
            color: var(--accent);
        }

        .solution-btn {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* 6. 全国服务网络 & 20. 服务网络组件 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
            align-items: center;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .network-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-sm);
        }

        .network-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            position: relative;
        }

        .network-dot::after {
            content: "";
            position: absolute;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            border: 2px solid var(--primary-light);
            top: -4px;
            left: -4px;
            animation: ping 1.5s infinite;
        }

        @keyframes ping {
            0% { transform: scale(0.8); opacity: 1; }
            100% { transform: scale(2); opacity: 0; }
        }

        .network-item span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .network-map-container {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-md);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 280px;
        }

        /* 8. 技术标准 & 数据指标卡片组件 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            background: var(--gradient-holo-solid);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

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

        .standard-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .standard-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .standard-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .standard-card h4 svg {
            color: var(--accent);
        }

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

        /* 9. 客户案例中心 & 20. 标签云组件 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
        }

        .case-img {
            position: relative;
            height: 220px;
            background: #f1f5f9;
        }

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

        .case-category {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
        }

        .case-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .case-body h4 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .case-body p {
            font-size: 13px;
            color: var(--text-medium);
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }

        .tag-cloud span {
            background: rgba(99, 102, 241, 0.05);
            border: 1px solid rgba(99, 102, 241, 0.08);
            font-size: 11px;
            color: var(--text-light);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* 10. 对比评测 */
        .eval-container {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-lg);
            backdrop-filter: blur(10px);
        }

        .eval-rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .eval-badge {
            background: linear-gradient(135deg, #fef08a 0%, #facc15 100%);
            color: #713f12;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 16px;
            box-shadow: var(--shadow-sm);
        }

        .eval-score {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-dark);
        }

        .eval-score span {
            font-size: 48px;
            color: var(--accent);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .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: rgba(99, 102, 241, 0.05);
            font-weight: 700;
            color: var(--text-dark);
        }

        .compare-table tr:hover {
            background: rgba(99, 102, 241, 0.02);
        }

        .compare-feature {
            font-weight: 600;
            color: var(--text-dark);
        }

        .highlight-col {
            background: rgba(99, 102, 241, 0.03);
            font-weight: 600;
            color: var(--primary-dark);
        }

        .status-yes {
            color: #10b981;
            font-weight: bold;
        }

        .status-no {
            color: #ef4444;
        }

        /* 11. 智能需求匹配 & 20. 联系我们 表单 */
        .form-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .form-info-side {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .form-info-side h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .form-info-side p {
            color: var(--text-medium);
            margin-bottom: 32px;
            font-size: 15px;
        }

        .form-contact-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .form-contact-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .form-contact-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(99, 102, 241, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .form-contact-text h5 {
            font-size: 14px;
            color: var(--text-light);
        }

        .form-contact-text p {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0;
        }

        .form-container-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-lg);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            background: var(--bg-base);
            color: var(--text-dark);
            font-size: 14px;
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
        }

        /* 12. Token比价参考 */
        .token-header-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .token-update-time {
            font-size: 13px;
            color: var(--text-light);
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .course-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .course-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-md);
            position: relative;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s;
        }

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

        .course-badge {
            align-self: flex-start;
            background: rgba(236, 72, 153, 0.08);
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .course-card p {
            font-size: 14px;
            color: var(--text-medium);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .course-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            font-size: 12px;
            color: var(--text-light);
        }

        /* 15. 帮助中心 & 16. 常见用户问题 FAQ & 17. 常见问题自助排查 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .faq-column {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-trigger {
            width: 100%;
            background: none;
            border: none;
            padding: 20px;
            text-align: left;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-trigger svg {
            transition: transform 0.3s;
            color: var(--text-light);
            flex-shrink: 0;
        }

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

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

        .faq-item.active {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-item.active .faq-trigger svg {
            transform: rotate(180deg);
            color: var(--primary);
        }

        /* 18. 网站术语百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .wiki-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        .wiki-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }

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

        /* 19. 行业资讯 / 知识库 & 最新文章 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .news-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
        }

        .news-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-body h3 a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

        .news-body h3 a:hover {
            color: var(--primary);
        }

        .news-excerpt {
            font-size: 13px;
            color: var(--text-medium);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .news-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 4px;
            margin-top: auto;
        }

        /* 客户评论卡片组件 (6条) */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-text {
            font-size: 14px;
            color: var(--text-medium);
            font-style: italic;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testi-avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-holo-solid);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .testi-info h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .testi-info p {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: white;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .footer-links-col h5 {
            color: white;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-links-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-links-col ul li a:hover {
            color: white;
        }

        .footer-qrcode {
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: flex-start;
        }

        .footer-qrcode img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            background: white;
            padding: 4px;
        }

        .footer-qrcode span {
            font-size: 12px;
            color: #64748b;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        .footer-copylink {
            display: flex;
            gap: 20px;
        }

        .footer-copylink a {
            color: #94a3b8;
            text-decoration: none;
        }

        .footer-copylink a:hover {
            color: white;
        }

        /* 友情链接专区 */
        .friendship-links {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
        }

        .friendship-links span {
            color: #64748b;
            margin-right: 12px;
        }

        .friendship-links a {
            color: #94a3b8;
            text-decoration: none;
            margin: 0 10px;
            transition: color 0.2s;
        }

        .friendship-links a:hover {
            color: white;
        }

        /* 浮动客服入口 */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-holo-solid);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-qrcode-box {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-qrcode-box img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .float-qrcode-box p {
            font-size: 12px;
            color: var(--text-dark);
            font-weight: 700;
        }

        .float-btn:hover .float-qrcode-box {
            display: block;
        }

        /* 移动端菜单样式 */
        @media (max-width: 991px) {
            .menu-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: white;
                border-bottom: 1px solid var(--border-color);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                box-shadow: var(--shadow-md);
            }

            .nav-links.show {
                display: flex;
            }

            .about-grid,
            .network-grid,
            .form-section-grid,
            .faq-grid {
                grid-template-columns: 1fr;
            }

            .hero-title {
                font-size: 36px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }