/* 艳色潮流风核心样式系统 */
    :root {
      --primary: #7f00ff;
      --secondary: #ff007f;
      --accent: #00f2fe;
      --accent-neon: #ffe600;
      --dark: #12131a;
      --light: #ffffff;
      --gray-light: #f8f9fa;
      --gray-border: #e9ecef;
      --text-muted: #6c757d;
      --border-width-thick: 3px;
      --shadow-trendy: 6px 6px 0px #12131a;
      --shadow-hover: 12px 12px 0px #12131a;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--dark);
      background-color: var(--gray-light);
    }

    body {
      overflow-x: hidden;
      line-height: 1.6;
    }

    /* 辅助排版容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 艳色潮流风格通用标题 */
    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      text-align: center;
      margin-bottom: 40px;
      text-transform: uppercase;
      letter-spacing: 1px;
      position: relative;
      display: inline-block;
      left: 50%;
      transform: translateX(-50%);
    }

    .section-title::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 10%;
      width: 80%;
      height: 6px;
      background: linear-gradient(90deg, var(--secondary), var(--primary));
      border: 1px solid var(--dark);
      box-shadow: 2px 2px 0 var(--dark);
    }

    /* 潮流按钮 */
    .btn-trendy {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 700;
      text-decoration: none;
      color: var(--dark);
      background-color: var(--accent-neon);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: 8px;
      box-shadow: var(--shadow-trendy);
      transition: var(--transition);
      cursor: pointer;
    }

    .btn-trendy:hover {
      transform: translate(-3px, -3px);
      box-shadow: var(--shadow-hover);
      background-color: var(--light);
    }

    .btn-trendy-secondary {
      background-color: var(--accent);
    }

    /* 顶部导航栏 */
    header {
      background-color: var(--light);
      border-bottom: var(--border-width-thick) solid var(--dark);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      height: 45px;
    }

    .brand-logo img {
      max-height: 100%;
      width: auto;
    }

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

    .nav-link {
      text-decoration: none;
      color: var(--dark);
      font-weight: 700;
      font-size: 0.95rem;
      padding: 8px 12px;
      border-radius: 4px;
      transition: var(--transition);
    }

    .nav-link:hover {
      background-color: var(--gray-border);
      color: var(--primary);
    }

    /* 移动端菜单按钮 */
    .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);
      transition: var(--transition);
    }

    /* 首屏 Hero (无图片，纯色/渐变/几何块) */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, rgba(127, 0, 255, 0.05) 0%, rgba(255, 0, 127, 0.05) 90.1%), var(--light);
      border-bottom: var(--border-width-thick) solid var(--dark);
      padding: 100px 0;
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 20px;
      color: var(--dark);
      text-transform: uppercase;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      border-bottom: 3px dashed var(--secondary);
    }

    .hero-content p {
      font-size: 1.15rem;
      color: var(--gray-800);
      margin-bottom: 30px;
      max-width: 600px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 35px;
    }

    .hero-tag {
      padding: 6px 12px;
      background: var(--light);
      border: 2px solid var(--dark);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
      box-shadow: 2px 2px 0px var(--dark);
    }

    .hero-card {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      padding: 30px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-trendy);
      position: relative;
    }

    .hero-card::before {
      content: "★ AI WORKFLOW";
      position: absolute;
      top: -15px;
      left: 20px;
      background: var(--secondary);
      color: var(--light);
      font-size: 0.75rem;
      font-weight: 900;
      padding: 4px 10px;
      border: 2px solid var(--dark);
      border-radius: 4px;
    }

    .hero-card h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 15px;
      margin-top: 10px;
    }

    .hero-card ul {
      list-style-type: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .hero-card li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 600;
      font-size: 0.95rem;
    }

    .hero-card li::before {
      content: "✔";
      color: var(--secondary);
      font-weight: 900;
    }

    /* 数据指标 */
    .metrics-section {
      background-color: var(--light);
      border-bottom: var(--border-width-thick) solid var(--dark);
      padding: 60px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      background-color: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-sm);
      padding: 20px;
      text-align: center;
      box-shadow: var(--shadow-trendy);
      transition: var(--transition);
    }

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

    .metric-num {
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--secondary);
      margin-bottom: 5px;
    }

    .metric-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--dark);
    }

    /* 通用块间距 */
    section {
      padding: 80px 0;
      border-bottom: var(--border-width-thick) solid var(--dark);
    }

    /* 关于我们 */
    .about-section {
      background-color: var(--gray-light);
    }

    .about-content {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-trendy);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .about-text h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 15px;
      color: var(--primary);
    }

    .about-text p {
      margin-bottom: 15px;
      color: var(--gray-800);
      font-size: 1rem;
    }

    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    .about-feature-box {
      border: 2px solid var(--dark);
      padding: 15px;
      border-radius: var(--radius-sm);
      background-color: var(--gray-light);
    }

    .about-feature-box h4 {
      font-weight: 800;
      margin-bottom: 5px;
    }

    /* 服务体系 */
    .services-section {
      background-color: var(--light);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .service-card {
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 25px;
      background-color: var(--light);
      box-shadow: var(--shadow-trendy);
      transition: var(--transition);
    }

    .service-card:hover {
      transform: translateY(-5px) scale(1.02);
      box-shadow: var(--shadow-hover);
    }

    .service-icon {
      font-size: 2rem;
      margin-bottom: 15px;
    }

    .service-card h3 {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--gray-800);
    }

    .platform-tags {
      margin-top: 50px;
      text-align: center;
    }

    .platform-tags h4 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 20px;
    }

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

    .platform-tag {
      padding: 5px 12px;
      background-color: var(--gray-light);
      border: 1px solid var(--dark);
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 700;
      transition: var(--transition);
    }

    .platform-tag:hover {
      background-color: var(--primary);
      color: var(--light);
    }

    /* 制作流程 & 时间线 */
    .flow-section {
      background-color: var(--gray-light);
    }

    .flow-timeline {
      position: relative;
      max-width: 800px;
      margin: 0 auto;
    }

    .flow-timeline::after {
      content: '';
      position: absolute;
      width: 6px;
      background-color: var(--dark);
      top: 0;
      bottom: 0;
      left: 50%;
      margin-left: -3px;
    }

    .flow-container {
      padding: 10px 40px;
      position: relative;
      background-color: inherit;
      width: 50%;
    }

    .flow-container::after {
      content: '';
      position: absolute;
      width: 20px;
      height: 20px;
      right: -10px;
      background-color: var(--accent-neon);
      border: 4px solid var(--dark);
      top: 15px;
      border-radius: 50%;
      z-index: 1;
    }

    .left-flow {
      left: 0;
    }

    .right-flow {
      left: 50%;
    }

    .right-flow::after {
      left: -10px;
    }

    .flow-content {
      padding: 20px;
      background-color: var(--light);
      position: relative;
      border-radius: var(--radius-sm);
      border: var(--border-width-thick) solid var(--dark);
      box-shadow: 4px 4px 0px var(--dark);
    }

    .flow-content h3 {
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* 全行业解决方案 */
    .solutions-section {
      background-color: var(--light);
    }

    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .solution-card {
      background-color: var(--gray-light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-trendy);
      display: flex;
      flex-direction: column;
    }

    .solution-body {
      padding: 25px;
      flex-grow: 1;
    }

    .solution-body h3 {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    /* 服务网络 */
    .network-section {
      background-color: var(--gray-light);
    }

    .network-map-container {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
    }

    .network-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    .network-card {
      background: var(--light);
      border: 2px solid var(--dark);
      border-radius: var(--radius-sm);
      padding: 15px;
      box-shadow: 3px 3px 0 var(--dark);
    }

    .network-card h4 {
      font-weight: 800;
      color: var(--secondary);
    }

    /* 标准化流程 & 技术标准 */
    .standard-section {
      background-color: var(--light);
    }

    .standards-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
    }

    .tech-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .tech-table th, .tech-table td {
      border: 1px solid var(--dark);
      padding: 12px 15px;
      text-align: left;
    }

    .tech-table th {
      background-color: var(--accent);
      color: var(--dark);
      font-weight: 800;
    }

    .tech-table tr:nth-child(even) {
      background-color: var(--gray-light);
    }

    /* 客户案例中心 (横版、方版素材图应用) */
    .cases-section {
      background-color: var(--gray-light);
    }

    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .case-card {
      background-color: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-trendy);
      display: flex;
      flex-direction: column;
    }

    .case-img-container {
      border-bottom: var(--border-width-thick) solid var(--dark);
      background-color: var(--gray-border);
      position: relative;
      padding-top: 56.25%; /* 16:9 */
      overflow: hidden;
    }

    .case-img-container img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

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

    .case-info {
      padding: 20px;
    }

    .case-tag {
      background: var(--accent-neon);
      border: 1px solid var(--dark);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .case-info h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* 宣传图展示区 (图片并排) */
    .banner-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 40px;
    }

    .banner-showcase img {
      width: 100%;
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-trendy);
      transition: var(--transition);
    }

    .banner-showcase img:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    /* 对比评测 (评分9.9分) */
    .compare-section {
      background-color: var(--light);
    }

    .compare-card {
      background-color: var(--gray-light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-trendy);
    }

    .compare-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 30px;
      border-bottom: 2px dashed var(--dark);
      padding-bottom: 20px;
    }

    .rating-box {
      background-color: var(--accent-neon);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-sm);
      padding: 15px 30px;
      text-align: center;
      box-shadow: 4px 4px 0 var(--dark);
    }

    .rating-score {
      font-size: 2.2rem;
      font-weight: 900;
    }

    .compare-table-wrapper {
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 600px;
    }

    .compare-table th, .compare-table td {
      border: 2px solid var(--dark);
      padding: 15px;
      text-align: center;
    }

    .compare-table th {
      background-color: var(--primary);
      color: var(--light);
      font-weight: 800;
    }

    .compare-table td:first-child {
      text-align: left;
      font-weight: 700;
    }

    .highlight-cell {
      background-color: rgba(127,0,255,0.05);
      font-weight: 700;
    }

    /* Token比价 */
    .token-price-section {
      background-color: var(--gray-light);
    }

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

    .price-card {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 25px;
      box-shadow: var(--shadow-trendy);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .price-card.featured {
      background-color: #fff9e6;
      border-color: var(--secondary);
    }

    .price-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 15px;
      display: flex;
      justify-content: space-between;
    }

    .price-val {
      font-size: 2rem;
      font-weight: 900;
      color: var(--secondary);
      margin: 15px 0;
    }

    /* 培训板块 */
    .training-section {
      background-color: var(--light);
    }

    .training-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
    }

    .training-card {
      background: var(--gray-light);
      border: 2px solid var(--dark);
      border-radius: var(--radius-sm);
      padding: 20px 15px;
      text-align: center;
      box-shadow: 3px 3px 0 var(--dark);
      transition: var(--transition);
    }

    .training-card:hover {
      transform: translateY(-3px);
      box-shadow: 6px 6px 0 var(--dark);
      background-color: var(--light);
    }

    .training-icon {
      font-size: 1.8rem;
      margin-bottom: 10px;
    }

    .training-card h3 {
      font-size: 1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* 术语百科与自助排查 */
    .wiki-section {
      background-color: var(--gray-light);
    }

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

    .wiki-box, .check-box {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-trendy);
    }

    .wiki-list, .check-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 15px;
      margin-top: 15px;
    }

    .wiki-list li strong, .check-list li strong {
      color: var(--primary);
    }

    /* 常见问题 FAQ */
    .faq-section {
      background-color: var(--light);
    }

    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .faq-item {
      border: 2px solid var(--dark);
      border-radius: var(--radius-sm);
      background-color: var(--gray-light);
      overflow: hidden;
      box-shadow: 3px 3px 0 var(--dark);
    }

    .faq-header {
      padding: 18px 20px;
      font-weight: 800;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-color: var(--light);
      user-select: none;
    }

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

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }

    .faq-body-content {
      padding: 20px;
      border-top: 2px solid var(--dark);
      color: var(--gray-800);
      font-size: 0.95rem;
    }

    .faq-item.active .faq-body {
      max-height: 200px;
    }

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

    /* 用户评论 */
    .comments-section {
      background-color: var(--gray-light);
    }

    .comments-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .comment-card {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 25px;
      box-shadow: var(--shadow-trendy);
      position: relative;
    }

    .comment-header {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 15px;
    }

    .comment-avatar {
      width: 45px;
      height: 45px;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      border: 2px solid var(--dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--light);
      font-weight: 900;
    }

    .comment-meta h4 {
      font-size: 0.95rem;
      font-weight: 800;
    }

    .comment-meta span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .comment-body {
      font-size: 0.9rem;
      color: var(--gray-800);
    }

    /* 行业资讯 / 知识库 */
    .news-section {
      background-color: var(--light);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .news-card {
      background: var(--gray-light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 25px;
      box-shadow: var(--shadow-trendy);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-card h3 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 15px;
      line-height: 1.4;
    }

    .news-link {
      font-size: 0.9rem;
      color: var(--primary);
      text-decoration: none;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .news-link:hover {
      text-decoration: underline;
    }

    /* 智能需求匹配与联系我们（表单板块） */
    .contact-section {
      background-color: var(--gray-light);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
    }

    .form-wrapper {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-trendy);
    }

    .form-wrapper h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 25px;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 15px;
      font-size: 0.95rem;
      border: 2px solid var(--dark);
      border-radius: var(--radius-sm);
      background-color: var(--gray-light);
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: var(--light);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    .info-wrapper {
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-trendy);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .info-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
    }

    .info-icon {
      font-size: 1.5rem;
      background: var(--accent-neon);
      border: 2px solid var(--dark);
      padding: 5px 10px;
      border-radius: 4px;
    }

    .info-text h4 {
      font-weight: 800;
      margin-bottom: 4px;
    }

    .info-text p {
      color: var(--gray-800);
      font-size: 0.95rem;
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-top: 30px;
      padding-top: 20px;
      border-top: 2px dashed var(--gray-border);
    }

    .qr-image {
      width: 100px;
      height: 100px;
      border: 2px solid var(--dark);
      border-radius: 8px;
    }

    /* 浮动工具栏 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-trigger {
      width: 60px;
      height: 60px;
      background-color: var(--secondary);
      border: 3px solid var(--dark);
      border-radius: 50%;
      box-shadow: 4px 4px 0px var(--dark);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--light);
      font-size: 1.5rem;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }

    .kefu-trigger:hover {
      transform: translateY(-3px);
      box-shadow: 6px 6px 0px var(--dark);
      background-color: var(--accent-neon);
      color: var(--dark);
    }

    .kefu-popup {
      position: absolute;
      bottom: 75px;
      right: 0;
      width: 220px;
      background: var(--light);
      border: var(--border-width-thick) solid var(--dark);
      border-radius: var(--radius-md);
      padding: 15px;
      box-shadow: var(--shadow-trendy);
      display: none;
      text-align: center;
    }

    .kefu-popup img {
      width: 120px;
      height: 120px;
      margin: 10px auto;
      display: block;
      border: 1px solid var(--dark);
    }

    .kefu-popup h4 {
      font-size: 0.95rem;
      font-weight: 800;
    }

    /* 页脚 */
    footer {
      background-color: var(--dark);
      color: var(--light);
      padding: 60px 0 30px 0;
      border-top: var(--border-width-thick) solid var(--dark);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1.8fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h2 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 15px;
      color: var(--accent);
    }

    .footer-brand p {
      color: #a0aec0;
      font-size: 0.9rem;
      line-height: 1.8;
    }

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

    .footer-group h3 {
      font-size: 1rem;
      font-weight: 800;
      margin-bottom: 15px;
      color: var(--secondary);
    }

    .footer-group ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-group a {
      color: #cbd5e0;
      text-decoration: none;
      font-size: 0.85rem;
      transition: var(--transition);
    }

    .footer-group a:hover {
      color: var(--light);
      padding-left: 5px;
    }

    .footer-bottom {
      border-top: 1px solid #2d3748;
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 0.85rem;
      color: #a0aec0;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links a {
      color: #cbd5e0;
      text-decoration: none;
    }

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

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .about-grid, .standards-grid, .network-map-container, .wiki-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-grid, .cases-grid, .price-grid, .comments-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .training-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .hero-section {
        padding: 60px 0;
      }
      .flow-timeline::after {
        left: 31px;
      }
      .flow-container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
      }
      .flow-container::after {
        left: 21px;
      }
      .right-flow {
        left: 0%;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--light);
        flex-direction: column;
        padding: 20px;
        border-bottom: var(--border-width-thick) solid var(--dark);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
      }
      .nav-menu.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
      .solutions-grid, .cases-grid, .price-grid, .comments-grid, .news-grid, .training-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .banner-showcase {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
    }