:root {
            --primary: #0d9488;
            --primary-light: #06b6d4;
            --primary-dark: #0f766e;
            --bg-base: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-base);
        }

        body {
            line-height: 1.6;
        }

        /* 统一页面容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        section {
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
        }

        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-title h2 {
            font-size: 2.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.75rem;
        }

        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4.5rem;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-area img {
            height: 2.2rem;
            width: auto;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 1.5rem;
            list-style: none;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.6rem 1.25rem;
            border-radius: 0.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(13, 148, 136, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.35);
        }

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

        .btn-outline:hover {
            background-color: rgba(13, 148, 136, 0.05);
            transform: translateY(-2px);
        }

        /* 移动端菜单开关 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: transparent;
            border: none;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            transition: var(--transition);
        }

        /* 1. Hero 首页 (不包含任何图片) */
        .hero-section {
            padding-top: 8.5rem;
            padding-bottom: 6rem;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(13, 148, 136, 0.08) 0%, transparent 50%),
                        var(--bg-card);
            border-bottom: 1px solid var(--border-color);
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: rgba(13, 148, 136, 0.08);
            color: var(--primary-dark);
            padding: 0.4rem 1rem;
            border-radius: 2rem;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(13, 148, 136, 0.15);
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 850;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 1.5rem;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3rem;
            flex-wrap: wrap;
        }

        .hero-buttons .btn {
            padding: 0.85rem 2rem;
            font-size: 1.05rem;
        }

        /* 2. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 1rem;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 0.75rem;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
            border-color: rgba(13, 148, 136, 0.3);
        }

        .stat-number {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 3. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-main);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            line-height: 1.75;
        }

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

        .about-features li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
            font-weight: 500;
            color: var(--text-main);
        }

        .about-features li::before {
            content: "✓";
            color: var(--primary);
            font-weight: bold;
        }

        .about-media {
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
            border: 1px dashed rgba(13, 148, 136, 0.3);
            border-radius: 1rem;
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .about-media img {
            border-radius: 0.5rem;
            width: 100%;
            object-fit: cover;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }

        /* 4. 全平台AIGC服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.25rem 2rem;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
            border-color: rgba(13, 148, 136, 0.25);
        }

        .service-icon {
            width: 3.25rem;
            height: 3.25rem;
            background-color: rgba(13, 148, 136, 0.08);
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }

        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* 5. 一站式AIGC制作 (主打场景) */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .scene-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 1.5rem;
            transition: var(--transition);
        }

        .scene-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(13, 148, 136, 0.06);
        }

        .scene-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .scene-card h4::before {
            content: "✦";
            color: var(--primary-light);
        }

        .scene-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .model-list-wrapper {
            margin-top: 3.5rem;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2rem;
        }

        .model-list-title {
            text-align: center;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-muted);
            font-size: 1rem;
            letter-spacing: 0.05em;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
        }

        .model-tag {
            background-color: var(--bg-base);
            border: 1px solid var(--border-color);
            padding: 0.4rem 0.9rem;
            border-radius: 0.5rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .model-tag:hover {
            color: var(--primary);
            border-color: var(--primary);
            background-color: rgba(13, 148, 136, 0.04);
        }

        /* 6. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .solution-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .solution-body {
            padding: 2rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .solution-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
        }

        .solution-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }

        .solution-features {
            list-style: none;
            margin-bottom: 1.5rem;
        }

        .solution-features li {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .solution-features li::before {
            content: "•";
            color: var(--primary-light);
            font-weight: bold;
        }

        /* 7. 全国服务网络与标准化流程 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1rem;
            position: relative;
        }

        .flow-step {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 0.75rem;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .flow-step-num {
            width: 2rem;
            height: 2rem;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 1rem;
            font-size: 0.875rem;
        }

        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

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

        .network-bar {
            margin-top: 3.5rem;
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
            border: 1px solid rgba(13, 148, 136, 0.15);
            border-radius: 0.75rem;
            padding: 1.5rem;
            text-align: center;
        }

        .network-bar strong {
            color: var(--primary-dark);
        }

        /* 8. 技术标准 与 职业技术培训 */
        .tech-standards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
        }

        .tech-standards-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .standard-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 1.25rem;
            border-radius: 0.5rem;
            display: flex;
            gap: 1rem;
        }

        .standard-icon {
            font-size: 1.5rem;
            color: var(--primary);
            line-height: 1;
        }

        .standard-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        .standard-item p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .training-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .training-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

        .training-tags {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin: 1.5rem 0;
        }

        .training-tag-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            background-color: var(--bg-base);
            padding: 0.75rem 1rem;
            border-radius: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }

        .training-tag-item::before {
            content: "⚓";
            color: var(--primary-light);
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .case-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
            border-color: rgba(13, 148, 136, 0.25);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: var(--bg-base);
        }

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

        .case-info {
            padding: 1.5rem;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(13, 148, 136, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            margin-bottom: 0.75rem;
        }

        .case-info h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .case-info p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 10. 对比评测 */
        .comparison-wrapper {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
        }

        .score-box {
            display: flex;
            align-items: center;
            justify-content: space-around;
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
            padding: 2rem;
            border-radius: 0.75rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
            gap: 1.5rem;
            border: 1px solid rgba(13, 148, 136, 0.1);
        }

        .score-item {
            text-align: center;
        }

        .score-value {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .score-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }

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

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

        .comparison-table th, 
        .comparison-table td {
            padding: 1.2rem 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            font-weight: 700;
            background-color: var(--bg-base);
            color: var(--text-main);
        }

        .comparison-table tr:hover {
            background-color: rgba(13, 148, 136, 0.02);
        }

        .comparison-table td strong {
            color: var(--primary-dark);
        }

        /* 11. 智能需求匹配 (表单) & 21. 加盟代理 */
        .action-columns {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
        }

        .form-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: 0.5rem;
            border: 1px solid var(--border-color);
            background-color: var(--bg-base);
            color: var(--text-main);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        .agent-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #ffffff;
            border-radius: 1rem;
            padding: 2.5rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 10px 30px -10px rgba(13, 148, 136, 0.3);
        }

        .agent-card h3 {
            font-size: 1.75rem;
            font-weight: 800;
            margin-bottom: 1rem;
            line-height: 1.3;
        }

        .agent-card p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .agent-list {
            list-style: none;
            margin-bottom: 2.5rem;
        }

        .agent-list li {
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .agent-list li::before {
            content: "⚡";
        }

        .agent-card .btn-light {
            background-color: #ffffff;
            color: var(--primary-dark);
        }

        .agent-card .btn-light:hover {
            background-color: var(--bg-base);
            transform: translateY(-2px);
        }

        /* 12. Token 比价参考 */
        .token-pricing-wrapper {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .token-header h3 {
            font-size: 1.25rem;
            font-weight: 700;
        }

        .token-badge {
            background-color: rgba(13, 148, 136, 0.08);
            color: var(--primary);
            padding: 0.3rem 0.75rem;
            border-radius: 0.25rem;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* 15. 帮助中心 与 16. FAQ折叠面板 & 17. 故障排查 */
        .faq-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
        }

        .faq-title-area h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-main);
        }

        .faq-title-area p {
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        .troubleshoot-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 1.5rem;
            margin-top: 2rem;
        }

        .troubleshoot-box h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .troubleshoot-box h4::before {
            content: "⚙️";
        }

        .troubleshoot-list {
            list-style: none;
        }

        .troubleshoot-list li {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px dashed var(--border-color);
        }

        .troubleshoot-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-trigger {
            width: 100%;
            padding: 1.25rem;
            text-align: left;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-trigger::after {
            content: "+";
            font-size: 1.25rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-trigger::after {
            content: "−";
            transform: rotate(180deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: rgba(13, 148, 136, 0.01);
        }

        .faq-content-inner {
            padding: 0 1.25rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 18. AI 术语百科 & 19. 行业资讯 / 知识库 */
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
        }

        .wiki-card, .news-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
            height: 100%;
        }

        .info-header-title {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--text-main);
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 0.75rem;
        }

        .wiki-list, .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .wiki-item dt {
            font-weight: 700;
            color: var(--primary-dark);
            font-size: 0.95rem;
            margin-bottom: 0.25rem;
        }

        .wiki-item dd {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .news-item-link {
            display: flex;
            flex-direction: column;
            text-decoration: none;
            color: var(--text-main);
            padding: 0.5rem 0;
            transition: var(--transition);
        }

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

        .news-item-title {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .news-item-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }

        /* 7. 用户评论卡片 (6条评论) */
        .reviews-section {
            background-color: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .review-card {
            background-color: var(--bg-base);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            line-height: 1.6;
            position: relative;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }

        .author-avatar {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
        }

        .author-info h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-main);
        }

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

        /* 20. 联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
            align-items: start;
        }

        .contact-info-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
        }

        .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .contact-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .contact-icon {
            font-size: 1.5rem;
            color: var(--primary);
            line-height: 1;
        }

        .contact-details h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

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

        .qr-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.5rem;
            text-align: center;
        }

        .qr-container {
            width: 180px;
            height: 180px;
            margin: 0 auto 1.5rem;
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            padding: 0.5rem;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qr-container img {
            max-width: 100%;
            height: auto;
            border-radius: 0.25rem;
        }

        .qr-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .qr-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 友情链接与系统尾部 */
        .footer-links-section {
            background-color: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .links-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .links-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .links-col ul a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.875rem;
            transition: var(--transition);
        }

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

        .friend-links-area {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .friend-links-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
        }

        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .friend-links-list a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            gap: 1.5rem;
        }

        .footer-bottom-links a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        /* 侧边悬浮浮标 */
        .floating-action-center {
            position: fixed;
            right: 1.5rem;
            bottom: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            z-index: 999;
        }

        .float-btn {
            width: 3.25rem;
            height: 3.25rem;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .float-btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #ffffff;
            border: none;
        }

        .float-qr-hover {
            position: absolute;
            right: 4rem;
            bottom: 0;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            padding: 1rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            width: 140px;
            text-align: center;
        }

        .float-qr-hover img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border-radius: 0.25rem;
            margin-bottom: 0.5rem;
        }

        .float-qr-hover p {
            font-size: 0.75rem;
            color: var(--text-main);
            font-weight: 600;
        }

        .float-btn:hover .float-qr-hover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .services-grid, .case-grid, .reviews-grid, .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .scenes-grid, .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-standards-grid, .action-columns, .faq-layout, .info-layout, .contact-layout, .about-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 4.5rem;
                left: 0;
                width: 100%;
                background-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                padding: 1.5rem;
                gap: 1rem;
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero-content h1 {
                font-size: 2.2rem;
            }

            .services-grid, .case-grid, .reviews-grid, .solutions-grid, .stats-grid, .scenes-grid, .flow-grid {
                grid-template-columns: 1fr;
            }
            
            .links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }