:root {
            --primary: #0d9488;
            --primary-light: #14b8a6;
            --primary-dark: #0f766e;
            --primary-subtle: #ccfbf1;
            --secondary: #0f172a;
            --text-main: #334155;
            --text-dark: #0f172a;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 统一容器类 */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-white);
        }

        section:nth-of-type(even) {
            background-color: var(--bg-light);
        }

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

        .section-tag {
            display: inline-block;
            background-color: var(--primary-subtle);
            color: var(--primary-dark);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 9999px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .section-title {
            font-size: 2.2rem;
            color: var(--text-dark);
            margin-bottom: 16px;
            font-weight: 700;
        }

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

        /* 按钮通用样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
            color: #fff;
        }

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

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

        /* 顶部导航 */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

        .logo-box img {
            height: 38px;
            width: auto;
        }

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--text-dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background-color: var(--bg-light);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* 汉堡按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
            padding: 8px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* 1. Hero 首页 - 严格无图，青色科技渐变及微动效 */
        .hero {
            position: relative;
            background: radial-gradient(circle at 70% 30%, rgba(20, 184, 166, 0.08) 0%, transparent 60%),
                        radial-gradient(circle at 10% 80%, rgba(13, 148, 136, 0.05) 0%, transparent 50%),
                        var(--bg-white);
            padding: 100px 0 120px 0;
            overflow: hidden;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.1s;
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-subtle);
            border: 1px solid rgba(20, 184, 166, 0.2);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 24px;
            animation: pulse 2s infinite ease-in-out;
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-title span {
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), #0284c7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-description {
            font-size: 1.25rem;
            color: var(--text-light);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 50px;
        }

        .hero-feature-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 20px;
        }

        .hero-tag-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            color: var(--text-dark);
            font-weight: 500;
        }

        .hero-tag-item svg {
            color: var(--primary);
            width: 18px;
            height: 18px;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 18px;
        }

        .about-text p {
            margin-bottom: 16px;
            color: var(--text-main);
            font-size: 1.05rem;
        }

        .about-highlights {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-card {
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .about-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.05);
            border-color: var(--primary-light);
        }

        .about-card h4 {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 8px;
        }

        .about-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        /* 3. 全平台AIGC服务体系 */
        .service-intro {
            background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
        }

        .model-list-wrapper {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 40px rgba(0,0,0,0.03);
            margin-top: 40px;
        }

        .model-list-title {
            text-align: center;
            font-size: 1.25rem;
            color: var(--text-dark);
            margin-bottom: 30px;
            font-weight: 700;
        }

        .model-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 16px;
        }

        .model-badge {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 12px;
            text-align: center;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
            transition: var(--transition);
        }

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

        /* 4. 全自动AIGC制作流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .process-step-item {
            position: relative;
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
            z-index: 2;
            transition: var(--transition);
        }

        .process-step-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(13,148,136,0.1);
            border-color: var(--primary);
        }

        .step-num {
            width: 48px;
            height: 48px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 auto 20px auto;
        }

        .step-title {
            font-size: 1.15rem;
            color: var(--text-dark);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 40px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .solution-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

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

        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.06);
            border-color: rgba(20, 184, 166, 0.3);
        }

        .solution-icon-box {
            color: var(--primary);
            margin-bottom: 24px;
        }

        .solution-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .solution-desc {
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .solution-features {
            list-style: none;
            padding-left: 0;
        }

        .solution-features li {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        /* 6. 全国服务网络 */
        .network-section {
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
        }

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

        .network-map-simulation {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 30px rgba(0,0,0,0.04);
            position: relative;
        }

        .map-marker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 99px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 6px;
        }

        .map-marker.active {
            background-color: var(--primary-subtle);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        /* 7. 标准化服务全流程 */
        .flow-timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 30px;
            border-left: 2px solid var(--border-color);
        }

        .flow-node {
            position: relative;
            padding-bottom: 40px;
        }

        .flow-node:last-child {
            padding-bottom: 0;
        }

        .flow-node::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--bg-white);
            border: 4px solid var(--primary);
            transition: var(--transition);
        }

        .flow-node:hover::before {
            background-color: var(--primary);
            scale: 1.2;
        }

        .flow-node-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .flow-node-desc {
            font-size: 0.95rem;
            color: var(--text-light);
        }

        /* 8. 技术标准 */
        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .tech-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .tech-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .tech-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }

        .tech-icon {
            width: 40px;
            height: 40px;
            background-color: var(--primary-subtle);
            color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .tech-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
        }

        .tech-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
            border-color: var(--primary-light);
        }

        .case-img-container {
            position: relative;
            background-color: #f1f5f9;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

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

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-content {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .case-card-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        /* 10. 对比评测 - 突出 9.9分，五星 */
        .review-section {
            background-color: var(--bg-light);
        }

        .review-wrapper {
            background-color: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 50px 40px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.04);
        }

        .review-header-box {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 40px;
            margin-bottom: 40px;
        }

        .score-card {
            text-align: center;
            background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
            color: white;
            padding: 40px 30px;
            border-radius: 12px;
        }

        .score-value {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 10px;
        }

        .score-stars {
            color: #f59e0b;
            font-size: 1.5rem;
            margin-bottom: 12px;
        }

        .score-label {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .rating-desc h4 {
            font-size: 1.5rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .rating-desc p {
            color: var(--text-main);
            font-size: 1rem;
        }

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

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

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

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

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

        /* 11. 智能需求匹配 (表单) */
        .form-section {
            background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 100%);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: start;
        }

        .form-box {
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 45px rgba(0,0,0,0.04);
        }

        .form-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

        .form-group-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

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

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: var(--bg-light);
            color: var(--text-dark);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--bg-white);
            box-shadow: 0 0 0 3px var(--primary-subtle);
        }

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

        .submit-btn-wrapper {
            margin-top: 30px;
        }

        .form-sidebar {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.03);
        }

        .sidebar-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

        .sidebar-list {
            list-style: none;
            padding-left: 0;
        }

        .sidebar-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .sidebar-item-icon {
            color: var(--primary);
            font-weight: bold;
            margin-top: 2px;
        }

        /* 12. Token 比价参考 */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .token-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 24px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(13,148,136,0.1);
            position: relative;
        }

        .token-card.featured::after {
            content: '推荐';
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .token-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            border-color: var(--primary-light);
        }

        .token-model-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .token-price-val {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .token-unit {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .token-features-list {
            list-style: none;
            padding: 0;
            margin-bottom: 24px;
            text-align: left;
        }

        .token-features-list li {
            font-size: 0.85rem;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .token-features-list li::before {
            content: '•';
            color: var(--primary);
            font-weight: bold;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 30px;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transform: translateY(-4px);
        }

        .training-cert {
            display: inline-block;
            background-color: #fef3c7;
            color: #d97706;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 4px;
            margin-bottom: 16px;
        }

        .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-info-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            font-size: 0.85rem;
            color: var(--text-main);
        }

        /* 15. 帮助中心 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .help-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }

        .help-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.04);
            border-color: var(--primary-light);
        }

        .help-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .help-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .help-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* 16. 常见用户问题 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            color: var(--text-dark);
            user-select: none;
        }

        .faq-header:hover {
            background-color: var(--bg-light);
        }

        .faq-icon {
            transition: var(--transition);
            font-size: 1.2rem;
            color: var(--primary);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            color: var(--text-main);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-body {
            max-height: 1000px;
            padding-bottom: 20px;
            transition: max-height 0.5s ease-in-out;
        }

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

        /* 17. 常见问题自助排查 */
        .troubleshooting-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.03);
        }

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

        .trouble-item h4 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .trouble-item h4::before {
            content: '⚠️';
        }

        .trouble-item p {
            font-size: 0.9rem;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .trouble-item span {
            font-size: 0.85rem;
            color: var(--primary-dark);
            background-color: var(--primary-subtle);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 18. 网站术语百科 */
        .百科-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .百科-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            transition: var(--transition);
        }

        .百科-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 25px rgba(0,0,0,0.04);
        }

        .百科-term {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: inline-block;
            border-bottom: 2px solid var(--primary-subtle);
        }

        .百科-definition {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 19. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-color: var(--primary-light);
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .news-link {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .comment-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            position: relative;
            transition: var(--transition);
        }

        .comment-card:hover {
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            border-color: var(--primary-light);
        }

        .comment-card::before {
            content: '“';
            position: absolute;
            top: 20px;
            left: 20px;
            font-size: 4rem;
            color: var(--primary-subtle);
            font-family: serif;
            line-height: 1;
        }

        .comment-content {
            position: relative;
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 20px;
            z-index: 2;
        }

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

        .author-info h5 {
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 2px;
        }

        .author-info p {
            font-size: 0.8rem;
            color: var(--text-light);
            margin: 0;
        }

        /* 20. 联系我们 & 页脚 */
        .footer-section {
            background-color: var(--secondary);
            color: #94a3b8;
            padding: 80px 0 30px 0;
            border-top: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-info h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }

        .footer-info p {
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        .footer-links h4 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .footer-links-list {
            list-style: none;
            padding: 0;
        }

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

        .footer-links-list a {
            font-size: 0.9rem;
            color: #94a3b8;
        }

        .footer-links-list a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-contact h4 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .qr-item {
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .qr-item img {
            width: 90px;
            height: 90px;
            border-radius: 8px;
            margin-bottom: 8px;
            background-color: white;
            padding: 4px;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 0.85rem;
        }

        .footer-bottom p {
            margin-bottom: 12px;
        }

        .friend-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.8rem;
        }

        .friend-links a {
            color: #64748b;
        }

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

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background-color: var(--bg-white);
            color: var(--text-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: white;
            transform: translateY(-2px);
        }

        .float-btn .tooltip-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-white);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            width: 120px;
            text-align: center;
        }

        .float-btn:hover .tooltip-qr {
            opacity: 1;
            pointer-events: auto;
            transform: translateX(-5px);
        }

        .float-btn .tooltip-qr img {
            width: 100px;
            height: 100px;
            margin-bottom: 6px;
        }

        .float-btn .tooltip-qr span {
            font-size: 0.75rem;
            color: var(--text-dark);
            display: block;
        }

        /* 动画关键帧 */
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.85;
                transform: scale(0.98);
            }
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .solutions-grid, .training-grid, .case-grid, .comments-grid, .news-grid, .help-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .百科-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .about-grid, .network-grid, .form-grid, .review-header-box, .trouble-grid {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .process-steps, .solutions-grid, .training-grid, .case-grid, .comments-grid, .news-grid, .help-grid, .token-pricing-grid, .百科-grid {
                grid-template-columns: 1fr;
            }
            .form-box, .form-sidebar {
                padding: 24px;
            }
        }