/* 基础复位与亮橙炽艳风主题定义 */
    :root {
      --primary: #FF5A1F; /* 亮橙 */
      --primary-hover: #E04810;
      --primary-light: #FFF0EB;
      --secondary: #FF9F1C; /* 暖阳黄 */
      --dark: #1E1E24; /* 深正文 */
      --light-bg: #FFFBF9; /* 浅暖基底色 */
      --white: #FFFFFF;
      --gray: #6A6D7A;
      --light-gray: #F5F6F8;
      --border: #EAEBED;
      --shadow: 0 10px 30px rgba(255, 90, 31, 0.05);
      --shadow-hover: 0 15px 40px rgba(255, 90, 31, 0.12);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", sans-serif;
      --max-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font);
      background-color: var(--light-bg);
      color: var(--dark);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .section {
      padding: 80px 0;
      position: relative;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark);
      text-align: center;
      margin-bottom: 12px;
      position: relative;
    }

    .section-title span {
      color: var(--primary);
    }

    .section-subtitle {
      font-size: 1.1rem;
      color: var(--gray);
      text-align: center;
      margin-bottom: 50px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      border: none;
      outline: none;
    }

    .btn-primary {
      background-color: var(--primary);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(255, 90, 31, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 90, 31, 0.4);
    }

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

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

    /* 顶部导航 */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 1000;
      transition: background-color 0.3s;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

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

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

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

    .nav-links {
      display: flex;
      gap: 24px;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--dark);
    }

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

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

    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
    }

    .menu-toggle span {
      display: block;
      width: 25px;
      height: 3px;
      background-color: var(--dark);
      border-radius: 2px;
      transition: 0.3s;
    }

    /* 首屏 Hero (禁止出现图片) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #FFF5F0 0%, var(--light-bg) 60%);
      padding: 100px 0 80px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px solid rgba(255, 90, 31, 0.15);
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--dark);
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

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

    .hero-desc {
      font-size: 1.2rem;
      color: var(--gray);
      max-width: 800px;
      margin: 0 auto 40px auto;
      line-height: 1.8;
    }

    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }

    .hero-features {
      display: flex;
      justify-content: center;
      gap: 40px;
      flex-wrap: wrap;
    }

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

    .hero-feature-item svg {
      color: var(--primary);
      width: 20px;
      height: 20px;
    }

    /* 数据指标卡片 */
    .stats-section {
      background-color: var(--white);
      padding: 50px 0;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 30px;
      text-align: center;
    }

    .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }

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

    /* 关于我们与平台介绍 */
    .about-section {
      background-color: var(--white);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

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

    .about-text {
      color: var(--gray);
      margin-bottom: 24px;
      font-size: 1rem;
      line-height: 1.8;
    }

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

    .about-feature-box {
      background: var(--light-bg);
      padding: 16px;
      border-radius: 8px;
      border: 1px solid var(--border);
    }

    .about-feature-box h4 {
      font-size: 1rem;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .about-feature-box p {
      font-size: 0.875rem;
      color: var(--gray);
    }

    .about-visual {
      background: linear-gradient(135deg, var(--primary-light) 0%, rgba(255,158,28,0.1) 100%);
      padding: 40px;
      border-radius: 16px;
      border: 1px dashed var(--primary);
      text-align: center;
    }

    .about-visual-text {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }

    /* 全平台 AIGC 服务 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .service-card {
      background-color: var(--white);
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
    }

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

    .service-icon {
      width: 50px;
      height: 50px;
      background-color: var(--primary-light);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.5rem;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .service-card p {
      color: var(--gray);
      font-size: 0.95rem;
    }

    /* AIGC 聚合模型标签云 */
    .model-tags-section {
      background-color: var(--white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .tag-cloud-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }

    .model-tag {
      background-color: var(--light-gray);
      color: var(--dark);
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: all 0.2s ease;
      border: 1px solid var(--border);
    }

    .model-tag:hover {
      background-color: var(--primary);
      color: var(--white);
      border-color: var(--primary);
      transform: scale(1.05);
    }

    /* 一站式 AIGC 制作及场景 */
    .production-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
    }

    .prod-card {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 24px;
      text-align: center;
      transition: all 0.3s ease;
    }

    .prod-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--secondary);
    }

    .prod-num {
      display: inline-block;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background-color: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      line-height: 32px;
      margin-bottom: 16px;
    }

    .prod-card h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--dark);
    }

    .prod-card p {
      font-size: 0.9rem;
      color: var(--gray);
    }

    /* 全行业解决方案 与 服务网络 */
    .solution-section {
      background-color: var(--white);
    }

    .solution-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .tab-btn {
      padding: 10px 24px;
      background-color: var(--light-gray);
      border: 1px solid var(--border);
      border-radius: 8px;
      font-weight: 600;
      color: var(--gray);
      cursor: pointer;
      transition: all 0.3s;
    }

    .tab-btn.active, .tab-btn:hover {
      background-color: var(--primary);
      color: var(--white);
      border-color: var(--primary);
    }

    .solution-content {
      background: var(--light-bg);
      border-radius: 12px;
      padding: 40px;
      border: 1px solid var(--border);
      min-height: 250px;
    }

    .solution-pane {
      display: none;
    }

    .solution-pane.active {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      animation: fadeIn 0.5s ease;
    }

    .sol-text h3 {
      font-size: 1.5rem;
      color: var(--dark);
      margin-bottom: 16px;
    }

    .sol-text p {
      color: var(--gray);
      margin-bottom: 20px;
    }

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

    .sol-features li {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      font-size: 0.95rem;
    }

    .sol-features svg {
      color: var(--success);
      width: 18px;
      height: 18px;
    }

    .sol-image-placeholder {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100%;
      min-height: 200px;
    }

    /* 全国服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
      align-items: center;
      margin-top: 50px;
    }

    .network-info h3 {
      font-size: 1.6rem;
      margin-bottom: 16px;
    }

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

    .node-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px;
      background-color: var(--white);
      border-radius: 6px;
      border: 1px solid var(--border);
    }

    .node-dot {
      width: 10px;
      height: 10px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }

    .network-map-visual {
      background: var(--white);
      border-radius: 12px;
      padding: 30px;
      border: 1px solid var(--border);
      position: relative;
      height: 320px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .map-pulse {
      position: absolute;
      width: 20px;
      height: 20px;
      background: rgba(255, 90, 31, 0.4);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    /* 标准化流程 & 技术标准 */
    .process-timeline {
      display: flex;
      justify-content: space-between;
      position: relative;
      margin-top: 40px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .process-timeline::before {
      content: '';
      position: absolute;
      top: 30px;
      left: 50px;
      right: 50px;
      height: 2px;
      background-color: var(--border);
      z-index: 1;
    }

    .process-step {
      flex: 1;
      min-width: 160px;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .step-circle {
      width: 60px;
      height: 60px;
      background-color: var(--white);
      border: 3px solid var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1.25rem;
      margin: 0 auto 16px auto;
      box-shadow: var(--shadow);
    }

    .process-step h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
    }

    .process-step p {
      font-size: 0.85rem;
      color: var(--gray);
      padding: 0 10px;
    }

    /* 技术标准列表 */
    .tech-standards {
      margin-top: 50px;
      background-color: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 30px;
    }

    .tech-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 24px;
    }

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

    .tech-item h5::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 6px;
      background-color: var(--primary);
      border-radius: 50%;
    }

    .tech-item p {
      font-size: 0.9rem;
      color: var(--gray);
    }

    /* 客户案例中心 & 宣传图 */
    .case-section {
      background-color: var(--light-bg);
    }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }

    .case-card {
      background-color: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background-color: var(--light-gray);
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }

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

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

    .case-tag {
      align-self: flex-start;
      padding: 4px 10px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .case-info h3 {
      font-size: 1.25rem;
      margin-bottom: 10px;
      color: var(--dark);
    }

    .case-info p {
      font-size: 0.9rem;
      color: var(--gray);
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .case-meta {
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 对比评测板块 */
    .compare-section {
      background-color: var(--white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .rating-box {
      background: linear-gradient(135deg, #FFF5F0 0%, #FFFDFB 100%);
      border: 2px solid var(--primary);
      border-radius: 16px;
      padding: 30px;
      max-width: 600px;
      margin: 0 auto 40px auto;
      text-align: center;
      box-shadow: var(--shadow);
    }

    .rating-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .stars {
      color: var(--secondary);
      font-size: 1.8rem;
      margin-bottom: 12px;
    }

    .score-num {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-max {
      font-size: 1.1rem;
      color: var(--gray);
    }

    /* 对比表格 */
    .table-responsive {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border);
      border-radius: 12px;
      background-color: var(--white);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 700px;
    }

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

    .compare-table th {
      background-color: var(--light-gray);
      font-weight: 700;
      color: var(--dark);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .compare-table td span.tag-yes {
      color: var(--success);
      font-weight: 700;
    }

    .compare-table td span.tag-no {
      color: var(--gray);
    }

    /* 加盟代理模块 */
    .agent-box {
      background: linear-gradient(135deg, var(--dark) 0%, #2A2C35 100%);
      color: var(--white);
      border-radius: 16px;
      padding: 50px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .agent-box h3 {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--white);
    }

    .agent-box p {
      font-size: 1.1rem;
      color: #B3B7C6;
      max-width: 700px;
      margin: 0 auto 30px auto;
    }

    .agent-highlights {
      display: flex;
      justify-content: center;
      gap: 30px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .highlight-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 16px 24px;
      border-radius: 8px;
    }

    .highlight-title {
      font-size: 1.3rem;
      color: var(--secondary);
      font-weight: 700;
      margin-bottom: 4px;
    }

    /* Token 比价参考 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .token-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 20px;
      text-align: center;
    }

    .token-name {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .token-price {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .token-unit {
      font-size: 0.8rem;
      color: var(--gray);
    }

    /* 职业技术培训 & 人工智能培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .training-card {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      border-top: 4px solid var(--primary);
      box-shadow: var(--shadow);
      transition: all 0.3s;
    }

    .training-card:hover {
      transform: translateY(-3px);
    }

    .training-card h4 {
      font-size: 1.15rem;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .training-card p {
      font-size: 0.875rem;
      color: var(--gray);
      margin-bottom: 16px;
    }

    .training-badge {
      display: inline-block;
      padding: 4px 8px;
      background-color: var(--light-gray);
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--gray);
    }

    /* 客户评论卡片 */
    .comments-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .comment-card {
      background-color: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 30px;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
    }

    .comment-text {
      font-size: 0.95rem;
      color: var(--dark);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
      font-style: italic;
    }

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

    .user-avatar {
      width: 44px;
      height: 44px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .user-info h4 {
      font-size: 0.95rem;
      color: var(--dark);
    }

    .user-info p {
      font-size: 0.8rem;
      color: var(--gray);
    }

    /* 常见问题 FAQ & 折叠面板 */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.3s;
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      color: var(--dark);
      user-select: none;
    }

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

    .faq-icon {
      transition: transform 0.3s;
      color: var(--primary);
    }

    .faq-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s ease-out;
      color: var(--gray);
      font-size: 0.95rem;
      border-top: 0 solid var(--border);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-item.active .faq-content {
      padding: 18px 24px;
      max-height: 200px;
      border-top: 1px solid var(--border);
    }

    /* 自助排查 与 百科 */
    .troubleshoot-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    @media (max-width: 768px) {
      .troubleshoot-grid {
        grid-template-columns: 1fr;
      }
    }

    .troubleshoot-card, .wiki-card {
      background-color: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 30px;
    }

    .troubleshoot-card h3, .wiki-card h3 {
      font-size: 1.4rem;
      margin-bottom: 20px;
      color: var(--dark);
      border-bottom: 2px solid var(--primary-light);
      padding-bottom: 10px;
    }

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

    .wiki-list li, .troubleshoot-list li {
      margin-bottom: 16px;
    }

    .wiki-list h4, .troubleshoot-list h4 {
      font-size: 1rem;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .wiki-list p, .troubleshoot-list p {
      font-size: 0.875rem;
      color: var(--gray);
    }

    /* 行业资讯 / 知识库 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .article-item {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .article-item h4 {
      font-size: 1.1rem;
      margin-bottom: 12px;
      color: var(--dark);
      line-height: 1.5;
    }

    .article-item p {
      font-size: 0.875rem;
      color: var(--gray);
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
      align-items: start;
    }

    .form-container {
      background-color: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 40px;
      box-shadow: var(--shadow);
    }

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

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

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 6px;
      font-size: 0.95rem;
      background-color: var(--light-gray);
      transition: all 0.3s;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      background-color: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.1);
    }

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

    .contact-info-panel {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 40px;
    }

    .contact-info-panel h3 {
      font-size: 1.4rem;
      margin-bottom: 24px;
    }

    .info-list-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 24px;
    }

    .info-icon {
      width: 40px;
      height: 40px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .info-content h4 {
      font-size: 0.95rem;
      color: var(--dark);
      margin-bottom: 4px;
    }

    .info-content p, .info-content a {
      font-size: 0.9rem;
      color: var(--gray);
    }

    .qrcode-box {
      margin-top: 30px;
      text-align: center;
      padding-top: 30px;
      border-top: 1px dashed var(--border);
    }

    .qrcode-img-wrap {
      width: 150px;
      height: 150px;
      margin: 0 auto 12px auto;
      border: 1px solid var(--border);
      padding: 8px;
      background-color: var(--white);
    }

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

    /* 页脚与友情链接 */
    footer {
      background-color: var(--dark);
      color: #A3A6B4;
      padding: 60px 0 30px 0;
      font-size: 0.9rem;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: var(--white);
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .footer-links h5 {
      color: var(--white);
      font-size: 1rem;
      margin-bottom: 20px;
    }

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

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

    .footer-links ul a {
      color: #A3A6B4;
    }

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

    .footer-contact h5 {
      color: var(--white);
      font-size: 1rem;
      margin-bottom: 20px;
    }

    .footer-contact p {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-bottom {
      border-top: 1px solid #2D303E;
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links a {
      color: #A3A6B4;
      font-size: 0.85rem;
    }

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

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

    .kefu-btn {
      width: 50px;
      height: 50px;
      background-color: var(--primary);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(255, 90, 31, 0.3);
      cursor: pointer;
      position: relative;
      transition: all 0.3s;
    }

    .kefu-btn:hover {
      background-color: var(--primary-hover);
      transform: scale(1.1);
    }

    .kefu-panel {
      position: absolute;
      right: 60px;
      bottom: 0;
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      width: 220px;
      padding: 20px;
      box-shadow: var(--shadow-hover);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.3s;
      color: var(--dark);
    }

    .kefu-btn:hover .kefu-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .kefu-panel img {
      width: 100%;
      border-radius: 6px;
      margin-bottom: 8px;
    }

    .kefu-panel p {
      font-size: 0.8rem;
      text-align: center;
      color: var(--gray);
    }

    .back-to-top {
      width: 50px;
      height: 50px;
      background-color: var(--white);
      color: var(--dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      cursor: pointer;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s;
    }

    .back-to-top.show {
      opacity: 1;
      visibility: visible;
    }

    /* 基础动画 */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 1; }
      100% { transform: scale(2); opacity: 0; }
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow-hover);
      }

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

      .menu-toggle {
        display: flex;
      }

      .about-grid, .contact-wrapper, .network-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }

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

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.2rem;
      }

      .hero-cta {
        flex-direction: column;
        padding: 0 20px;
      }

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

      .process-timeline::before {
        display: none;
      }

      .process-step {
        flex: 1 1 100%;
        margin-bottom: 30px;
      }

      .solution-pane.active {
        grid-template-columns: 1fr;
      }
    }