/* 基础变量 - 春绿薄荷清新风 */
        :root {
            --primary: #00b894;
            --primary-light: #e8f8f5;
            --primary-hover: #00a884;
            --dark: #1e3d2f;
            --text-dark: #2d3436;
            --text-muted: #636e72;
            --bg-light: #f7fcf9;
            --bg-white: #ffffff;
            --border-color: #e2f0e9;
            --shadow-soft: 0 10px 30px rgba(0, 184, 148, 0.06);
            --shadow-hover: 0 15px 35px rgba(0, 184, 148, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        /* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            outline: none;
        }

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

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

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

        ul {
            list-style: none;
        }

        /* 全局公用布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title {
            font-size: 2.2rem;
            color: var(--dark);
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .ai-page-logo {
            max-height: 45px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .nav-link {
            color: var(--text-dark);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 5px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .ai-page-home-link {
            font-weight: 600;
            padding: 8px 16px;
            border: 1px solid var(--primary);
            border-radius: 4px;
            color: var(--primary);
        }

        .ai-page-home-link:hover {
            background-color: var(--primary);
            color: #fff;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 100%;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 1. Hero首屏 - 严禁出现图片 */
        #home {
            background: linear-gradient(135deg, #f0faf5 0%, #eefcf3 50%, #ffffff 100%);
            padding-top: 150px;
            padding-bottom: 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        #home::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 184, 148, 0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            background-color: var(--mint-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 20px;
        }

        /* 改写后的 H1 */
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            border: 1px solid var(--primary);
            box-shadow: 0 4px 15px rgba(0, 184, 148, 0.3);
        }

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

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

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

        /* 数据指标卡片 (包含在首屏下方) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* 2. 关于我们 与 平台介绍 */
        #about {
            background-color: var(--bg-light);
        }

        .about-wrap {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

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

        .about-feat-item {
            background: var(--bg-white);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-soft);
        }

        .about-feat-item h4 {
            color: var(--dark);
            margin-bottom: 8px;
            font-size: 1.05rem;
        }

        .about-feat-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
        }

        .about-card-right {
            background: linear-gradient(135deg, var(--dark) 0%, #2c3e50 100%);
            color: #ffffff;
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--shadow-hover);
        }

        .about-card-right h3 {
            color: var(--primary);
            font-size: 1.6rem;
            margin-bottom: 25px;
        }

        .about-card-right ul li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
        }

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

        /* 3. 全平台AIGC服务 & 4. 一站式AIGC制作 */
        #services {
            background-color: var(--bg-white);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }

        .service-card {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px 25px;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: var(--mint-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            background-color: var(--bg-light);
            color: var(--primary-hover);
            font-size: 0.8rem;
            padding: 3px 10px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 平台聚合标签云 */
        .platform-cloud {
            text-align: center;
            background-color: var(--bg-light);
            padding: 40px 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .platform-cloud h4 {
            margin-bottom: 25px;
            color: var(--dark);
            font-size: 1.2rem;
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .cloud-tag {
            background-color: var(--bg-white);
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .cloud-tag:hover {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 5. 全行业解决方案 & 6. 全国服务网络 */
        #solutions {
            background-color: var(--bg-light);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 50px;
        }

        .sol-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
        }

        .sol-card h4 {
            color: var(--dark);
            font-size: 1.25rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .sol-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        /* 服务网络组件 */
        .network-box {
            background-color: var(--dark);
            color: #ffffff;
            padding: 50px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .network-left {
            max-width: 500px;
        }

        .network-left h4 {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .network-left p {
            color: #a4b0be;
            font-size: 0.95rem;
        }

        .network-right {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .net-node {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 15px 25px;
            border-radius: 8px;
            text-align: center;
        }

        .net-node span {
            display: block;
            font-size: 1.1rem;
            font-weight: bold;
            color: var(--primary);
        }

        .net-node label {
            font-size: 0.8rem;
            color: #cbd5e0;
        }

        /* 7. 标准化AIGC流程 & 8. 技术标准 */
        #process {
            background-color: var(--bg-white);
        }

        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            position: relative;
        }

        .timeline-item {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 12px;
            position: relative;
        }

        .timeline-step {
            position: absolute;
            top: -15px;
            left: 20px;
            width: 35px;
            height: 35px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
            box-shadow: 0 4px 10px rgba(0, 184, 148, 0.3);
        }

        .timeline-item h4 {
            margin-top: 15px;
            margin-bottom: 10px;
            color: var(--dark);
            font-size: 1.15rem;
        }

        .timeline-item p {
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        /* 技术标准 */
        .tech-standards {
            margin-top: 60px;
            background: linear-gradient(135deg, var(--mint-light) 0%, #ffffff 100%);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
        }

        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 25px;
        }

        .standard-item h5 {
            color: var(--dark);
            font-size: 1.1rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .standard-item h5::before {
            content: "●";
            color: var(--primary);
        }

        .standard-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 9. 客户案例中心 */
        #cases {
            background-color: var(--bg-light);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: var(--mint-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .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-info {
            padding: 25px;
        }

        .case-info span {
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 8px;
        }

        .case-info h4 {
            color: var(--dark);
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* 10. 对比评测 & 12. Token比价参考 */
        #comparison {
            background-color: var(--bg-white);
        }

        .rating-banner {
            background-color: var(--mint-light);
            border: 1px solid var(--primary);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            margin-bottom: 50px;
        }

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

        .rating-stars {
            color: #f1c40f;
            font-size: 1.5rem;
            margin: 10px 0;
        }

        .rating-desc {
            font-size: 1.1rem;
            color: var(--dark);
            font-weight: 600;
        }

        /* 对比表格 */
        .comparison-table-wrapper {
            width: 100%;
            overflow-x: auto;
            margin-bottom: 60px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
            background-color: var(--bg-white);
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }

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

        .comparison-table tr:hover {
            background-color: var(--bg-light);
        }

        .comparison-table td.highlight {
            font-weight: 600;
            color: var(--primary);
        }

        /* Token 比价看板 */
        .price-section h3 {
            text-align: center;
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 25px;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        #training {
            background-color: var(--bg-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .training-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 25px 20px;
            text-align: center;
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }

        .train-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 15px;
            display: inline-block;
        }

        .training-card h4 {
            color: var(--dark);
            font-size: 1.05rem;
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .training-notice {
            background-color: var(--mint-light);
            border-left: 4px solid var(--primary);
            padding: 20px 30px;
            border-radius: 0 8px 8px 0;
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .training-notice p {
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
        }

        /* 21. 加盟代理 */
        #agent {
            background: linear-gradient(135deg, var(--dark) 0%, #11251b 100%);
            color: #ffffff;
        }

        .agent-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 50px;
        }

        .agent-left {
            max-width: 600px;
        }

        .agent-tag {
            color: var(--primary);
            font-weight: bold;
            text-transform: uppercase;
            font-size: 0.9rem;
            display: block;
            margin-bottom: 15px;
        }

        .agent-left h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .agent-left p {
            color: #a4b0be;
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .agent-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .agent-feat-box {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .agent-feat-box h4 {
            color: var(--primary);
            margin-bottom: 5px;
            font-size: 1.1rem;
        }

        .agent-feat-box p {
            font-size: 0.85rem;
            margin: 0;
            color: #cbd5e0;
        }

        .agent-right {
            background-color: var(--bg-white);
            color: var(--text-dark);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
            text-align: center;
            max-width: 400px;
            width: 100%;
        }

        .agent-right h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .agent-right p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 25px;
        }

        .agent-right .qr-wrap {
            max-width: 180px;
            margin: 0 auto 20px;
            border: 1px solid var(--border-color);
            padding: 10px;
            border-radius: 8px;
            background-color: var(--bg-white);
        }

        .agent-right .qr-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 11. 智能需求匹配 (表单提交) & 20. 联系我们 */
        #contact {
            background-color: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
        }

        .form-container {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow-soft);
        }

        .form-container h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background-color: var(--bg-white);
            font-size: 0.95rem;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.15);
        }

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

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-header h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .info-header p {
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .info-list {
            margin-bottom: 40px;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .info-icon {
            width: 45px;
            height: 45px;
            background-color: var(--mint-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.1rem;
        }

        .info-details label {
            display: block;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .info-details span {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* 二维码展示 */
        .qrs-panel {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
        }

        .qr-card {
            text-align: center;
        }

        .qr-card img {
            width: 90px;
            height: 90px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 4px;
            margin-bottom: 8px;
        }

        .qr-card span {
            font-size: 0.78rem;
            color: var(--text-dark);
            font-weight: 500;
            display: block;
        }

        /* 15. 帮助中心, 16. FAQ, 17. 常见问题自助排查, 18. AI术语百科 */
        #help {
            background-color: var(--bg-light);
        }

        .help-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .faq-trigger {
            padding: 20px;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
        }

        .faq-trigger::after {
            content: "+";
            font-size: 1.4rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-content {
            padding: 0 20px 20px 20px;
            max-height: 200px;
        }

        /* 自助排查 & 百科 */
        .help-sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .sidebar-widget {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-soft);
        }

        .sidebar-widget h4 {
            color: var(--dark);
            font-size: 1.2rem;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 10px;
        }

        .trouble-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .trouble-list li:last-child {
            border-bottom: none;
        }

        .trouble-list li::before {
            content: "●";
            color: #ff7675;
            font-size: 0.8rem;
        }

        .wiki-terms {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .wiki-term {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            color: var(--text-dark);
            cursor: help;
        }

        .wiki-term:hover {
            background-color: var(--mint-light);
            border-color: var(--primary);
            color: var(--primary-hover);
        }

        /* 19. 行业资讯 / 知识库 & 最新文章 */
        #news {
            background-color: var(--bg-white);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .news-card {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 25px;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-soft);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: block;
            margin-bottom: 8px;
        }

        .news-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 15px;
        }

        .news-card a {
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 客户评论（6条） */
        .comments-section {
            margin-top: 90px;
        }

        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .comment-quote {
            font-size: 2.5rem;
            color: rgba(0, 184, 148, 0.15);
            position: absolute;
            top: 10px;
            left: 20px;
            font-family: serif;
            line-height: 1;
        }

        .comment-text {
            font-size: 0.92rem;
            color: var(--text-dark);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .author-info h5 {
            color: var(--dark);
            font-size: 0.9rem;
            margin: 0;
        }

        .author-info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* 页脚与友情链接 */
        footer {
            background-color: var(--dark);
            color: #cbd5e0;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 45px;
        }

        .footer-logo-desc {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .footer-logo-desc img {
            max-height: 40px;
            align-self: flex-start;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1.05rem;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

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

        .footer-links a {
            color: #a4b0be;
        }

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

        .footer-qrcode {
            display: flex;
            gap: 15px;
        }

        .footer-qr-item {
            text-align: center;
        }

        .footer-qr-item img {
            width: 90px;
            height: 90px;
            background: #fff;
            padding: 5px;
            border-radius: 4px;
        }

        .footer-qr-item span {
            font-size: 0.75rem;
            display: block;
            margin-top: 5px;
        }

        /* 友情链接专区 */
        .friend-links-box {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 25px;
            margin-bottom: 25px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links-box span {
            font-weight: bold;
            color: #ffffff;
            font-size: 0.85rem;
        }

        .friend-links-box a {
            color: #a4b0be;
            font-size: 0.85rem;
            margin-right: 10px;
        }

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

        /* 版权信息 */
        .copyright-box {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 25px;
            text-align: center;
            font-size: 0.8rem;
            color: #718096;
        }

        /* 浮动客服入口 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.2rem;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-hover);
            transform: scale(1.08);
        }

        .float-qr-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-hover);
            display: none;
            text-align: center;
            width: 140px;
        }

        .float-qr-pop img {
            width: 110px;
            height: 110px;
            display: block;
            margin-bottom: 5px;
        }

        .float-qr-pop span {
            color: var(--text-dark);
            font-size: 0.75rem;
            white-space: nowrap;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .solutions-grid, .cases-grid, .training-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .network-box {
                flex-direction: column;
                align-items: stretch;
            }
            .agent-wrap, .contact-grid, .help-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                flex-direction: column;
                padding: 20px 0;
                gap: 15px;
                border-top: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }

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

            .nav-btn-group {
                display: none;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .service-grid, .solutions-grid, .cases-grid, .news-grid, .comments-grid {
                grid-template-columns: 1fr;
            }

            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .about-wrap {
                grid-template-columns: 1fr;
            }

            .network-right {
                grid-template-columns: 1fr;
            }

            .timeline {
                grid-template-columns: 1fr;
            }

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

            .qrs-panel {
                grid-template-columns: 1fr;
                justify-items: center;
                gap: 20px;
            }
        }