/* 高饱和艳彩风全局样式 */
    :root {
      --primary: #FF007F;       /* 高饱和桃红 */
      --secondary: #00F0FF;     /* 高饱和荧光蓝 */
      --accent: #7000FF;        /* 高饱和极光紫 */
      --dark: #0F1016;          /* 深灰黑底 */
      --light-bg: #F8FAFC;      /* 浅灰白底色 */
      --card-bg: #FFFFFF;       /* 纯白卡片 */
      --text-main: #1E2229;     /* 主文字色 */
      --text-muted: #5C6470;    /* 辅助文字色 */
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --container-width: 1200px;
    }

    * {
      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;
    }

    body {
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* 标题样式 */
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      text-align: center;
      margin-bottom: 12px;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 1.1rem;
      text-align: center;
      color: var(--text-muted);
      margin-bottom: 50px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 按钮基础 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-weight: 600;
      border-radius: 50px;
      transition: var(--transition);
      cursor: pointer;
      border: none;
      font-size: 1rem;
    }
    .btn-gradient {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff !important;
      box-shadow: 0 4px 15px rgba(255, 0, 127, 0.3);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 0, 127, 0.5);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      border: 2px solid #E2E8F0;
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 导航栏 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid #ECEFF3;
      padding: 12px 0;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .logo-wrapper {
      display: flex;
      align-items: center;
      height: 40px;
    }
    .ai-page-logo {
      height: 100%;
      width: auto;
    }
    .nav-menu {
      display: flex;
      gap: 20px;
      list-style: none;
      align-items: center;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 4px;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .nav-btn {
      margin-left: 10px;
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 6px;
      cursor: pointer;
      border: none;
      background: transparent;
      padding: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 25px;
      height: 3px;
      background: var(--text-main);
      border-radius: 3px;
      transition: var(--transition);
    }

    /* 首屏 Hero 区 (严格无图，高饱和渐变背景，文字与功能按钮) */
    .hero-section {
      padding: 120px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 240, 255, 0.15), transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(255, 0, 127, 0.12), transparent 45%),
                  #FFFFFF;
      text-align: center;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid #E2E8F0;
    }
    .hero-tag {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 30px;
      background: rgba(255, 0, 127, 0.08);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 24px;
      letter-spacing: 1px;
      text-transform: uppercase;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.03); }
      100% { transform: scale(1); }
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      background: linear-gradient(135deg, var(--text-main) 30%, var(--accent) 70%, var(--primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -1px;
    }
    .hero-desc {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 40px;
    }
    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 关于我们 */
    .about-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .about-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .about-content p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1.05rem;
      line-height: 1.8;
    }
    .about-features {
      list-style: none;
    }
    .about-features li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      font-weight: 600;
      color: var(--text-main);
    }
    .about-features li::before {
      content: "✓";
      color: var(--primary);
      font-weight: 900;
      margin-right: 10px;
      font-size: 1.2rem;
    }
    .about-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .stat-card {
      background: var(--light-bg);
      padding: 30px 20px;
      border-radius: 16px;
      text-align: center;
      border: 1px solid #E2E8F0;
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-5px);
      border-color: var(--secondary);
      box-shadow: 0 10px 25px rgba(0, 240, 255, 0.1);
    }
    .stat-number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 全平台 AIGC 服务体系 */
    .services-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }
    .service-card {
      background: var(--card-bg);
      padding: 40px 30px;
      border-radius: 20px;
      border: 1px solid #ECEFF3;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
      border-color: var(--accent);
    }
    .service-icon {
      width: 60px;
      height: 60px;
      background: linear-gradient(135deg, rgba(255, 0, 127, 0.1), rgba(112, 0, 255, 0.1));
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 24px;
      color: var(--primary);
      font-size: 1.8rem;
    }
    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .service-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .service-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      background: rgba(112, 0, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 自动化制作流程 */
    .flow-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 40px;
      position: relative;
    }
    .flow-card {
      text-align: center;
      position: relative;
    }
    .flow-num {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, var(--accent), var(--secondary));
      color: #fff;
      font-size: 1.8rem;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 24px;
      box-shadow: 0 10px 20px rgba(112, 0, 255, 0.2);
    }
    .flow-name {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .flow-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 全行业解决方案 */
    .solutions-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .solution-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .tab-btn {
      padding: 10px 24px;
      background: var(--card-bg);
      border: 1px solid #ECEFF3;
      border-radius: 30px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }
    .tab-btn.active, .tab-btn:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .solution-content {
      background: var(--card-bg);
      padding: 40px;
      border-radius: 24px;
      border: 1px solid #ECEFF3;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: center;
    }
    .sol-text h4 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .sol-text p {
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .sol-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .sol-list li {
      display: flex;
      align-items: center;
      font-size: 0.95rem;
      font-weight: 600;
    }
    .sol-list li::before {
      content: "✦";
      color: var(--secondary);
      margin-right: 8px;
      font-weight: bold;
    }
    .sol-visual {
      background: linear-gradient(135deg, rgba(255, 0, 127, 0.05), rgba(0, 240, 255, 0.05));
      border: 2px dashed #E2E8F0;
      border-radius: 16px;
      padding: 30px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .sol-model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .model-tag {
      background: #F1F5F9;
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-main);
    }

    /* 全国服务网络 */
    .network-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .network-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .network-cities {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .city-card {
      background: var(--light-bg);
      padding: 20px;
      border-radius: 12px;
      text-align: center;
      border: 1px solid #ECEFF3;
    }
    .city-name {
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 6px;
      color: var(--primary);
    }
    .city-status {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 标准化服务全流程 + 技术标准 */
    .standard-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .standards-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
    }
    .std-timeline {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .timeline-item {
      display: flex;
      gap: 20px;
    }
    .time-point {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary);
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.75rem;
      font-weight: bold;
    }
    .time-content h5 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .time-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .tech-box {
      background: var(--card-bg);
      padding: 40px;
      border-radius: 20px;
      border: 1px solid #ECEFF3;
    }
    .tech-list {
      list-style: none;
    }
    .tech-item {
      padding-bottom: 16px;
      border-bottom: 1px solid #F1F5F9;
      margin-bottom: 16px;
    }
    .tech-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .tech-title {
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 6px;
      color: var(--accent);
    }
    .tech-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 客户案例中心 (包含要求的宣传图和素材图) */
    .case-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background: var(--light-bg);
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid #ECEFF3;
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    }
    .case-img-wrapper {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16/10;
    }
    .case-img-wrapper.square {
      aspect-ratio: 1/1;
    }
    .case-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .case-card:hover .case-img-wrapper img {
      transform: scale(1.05);
    }
    .case-info {
      padding: 24px;
    }
    .case-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .case-name {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测板块 */
    .eval-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .eval-container {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 50px;
      box-shadow: 0 10px 40px rgba(0,0,0,0.03);
      border: 1px solid #E2E8F0;
    }
    .score-banner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid #F1F5F9;
      padding-bottom: 30px;
      margin-bottom: 40px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-info {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-badge {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      padding: 16px 28px;
      border-radius: 16px;
      text-align: center;
    }
    .score-number {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
    }
    .score-total {
      font-size: 0.9rem;
      opacity: 0.8;
    }
    .recommend-text h4 {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .stars {
      color: #FFB800;
      font-size: 1.3rem;
      margin-top: 4px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #ECEFF3;
    }
    .eval-table th {
      font-weight: 700;
      color: var(--text-main);
      background: var(--light-bg);
    }
    .eval-table td {
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .eval-table tr:hover td {
      background: rgba(0, 240, 255, 0.02);
    }
    .highlight-cell {
      color: var(--primary) !important;
      font-weight: 700;
    }

    /* Token 比价参考 */
    .token-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .token-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }
    .token-card {
      background: var(--light-bg);
      border-radius: 16px;
      padding: 30px;
      border: 1px solid #E2E8F0;
      position: relative;
      transition: var(--transition);
    }
    .token-card:hover {
      border-color: var(--secondary);
      transform: translateY(-4px);
    }
    .token-model-name {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .token-price {
      display: flex;
      align-items: baseline;
      gap: 4px;
      margin-bottom: 20px;
    }
    .token-price .currency {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary);
    }
    .token-price .amount {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
    }
    .token-price .unit {
      color: var(--text-muted);
      font-size: 0.85rem;
    }
    .token-details {
      list-style: none;
      font-size: 0.88rem;
      color: var(--text-muted);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* 职业技术培训 + 人工智能培训 */
    .train-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .train-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }
    .train-card {
      background: var(--card-bg);
      border-radius: 20px;
      padding: 40px 30px;
      border: 1px solid #ECEFF3;
      transition: var(--transition);
    }
    .train-card:hover {
      border-color: var(--primary);
      box-shadow: 0 10px 30px rgba(255, 0, 127, 0.05);
    }
    .train-cert {
      display: inline-block;
      background: rgba(255, 0, 127, 0.06);
      color: var(--primary);
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .train-title {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .train-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .train-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .train-features li {
      display: flex;
      align-items: center;
      font-size: 0.9rem;
      font-weight: 600;
    }
    .train-features li::before {
      content: "🛡️";
      margin-right: 8px;
      font-size: 0.95rem;
    }

    /* 帮助中心 / 常见问题自助排查 / 网站术语百科 */
    .help-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .help-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
    }
    .help-sub-title {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 24px;
      color: var(--text-main);
      border-left: 4px solid var(--secondary);
      padding-left: 12px;
    }
    .troubleshoot-list, .wiki-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .troubleshoot-item, .wiki-item {
      background: var(--light-bg);
      padding: 20px;
      border-radius: 12px;
      border: 1px solid #ECEFF3;
    }
    .troubleshoot-title, .wiki-title {
      font-weight: 700;
      font-size: 0.95rem;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .troubleshoot-desc, .wiki-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 常见用户问题 FAQ (不少于10条) */
    .faq-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--card-bg);
      border-radius: 12px;
      border: 1px solid #E2E8F0;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFBFD;
    }
    .faq-content {
      padding: 20px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      border-top: 1px solid #ECEFF3;
      line-height: 1.6;
    }
    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 4px 15px rgba(255, 0, 127, 0.03);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 客户评论卡片 (6条评论) */
    .reviews-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-card {
      background: var(--light-bg);
      border-radius: 16px;
      padding: 30px;
      border: 1px solid #ECEFF3;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-style: italic;
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--secondary), var(--accent));
      border-radius: 50%;
      color: #fff;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }
    .user-info-text .user-name {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .user-info-text .user-title {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 智能需求匹配 + 联系我们 */
    .contact-section {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
    }
    .form-wrapper {
      background: var(--card-bg);
      padding: 40px;
      border-radius: 24px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
      border: 1px solid #ECEFF3;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid #E2E8F0;
      border-radius: 8px;
      font-size: 0.95rem;
      transition: var(--transition);
      background: #FCFDFE;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #FFFFFF;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .contact-info-panel {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }
    .info-card {
      background: var(--card-bg);
      padding: 30px;
      border-radius: 20px;
      border: 1px solid #ECEFF3;
    }
    .info-item {
      display: flex;
      gap: 16px;
      margin-bottom: 20px;
    }
    .info-item:last-child {
      margin-bottom: 0;
    }
    .info-icon {
      font-size: 1.5rem;
      color: var(--primary);
    }
    .info-label {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .info-val {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .qr-wrapper {
      text-align: center;
      margin-top: 10px;
    }
    .qr-image {
      max-width: 130px;
      margin: 10px auto 0;
      border: 1px solid #E2E8F0;
      border-radius: 8px;
      padding: 6px;
      background: #FFF;
    }

    /* 行业资讯 / 知识库 */
    .news-section {
      padding: 80px 0;
      background: var(--card-bg);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }
    .news-card {
      background: var(--light-bg);
      border-radius: 16px;
      padding: 30px;
      border: 1px solid #ECEFF3;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: var(--primary);
    }
    .news-header {
      margin-bottom: 20px;
    }
    .news-badge {
      display: inline-block;
      font-size: 0.75rem;
      background: var(--secondary);
      color: var(--dark);
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
    }
    .news-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .news-link {
      color: var(--primary);
      font-weight: 700;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
    }

    /* 页脚与友情链接 */
    .footer {
      background: var(--dark);
      color: #94A3B8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
      border-top: 3px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-logo {
      margin-bottom: 20px;
      filter: brightness(0) invert(1);
    }
    .footer-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 20px;
      position: relative;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--secondary);
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }
    .friend-links a {
      color: #94A3B8;
      font-size: 0.85rem;
      background: rgba(255,255,255,0.05);
      padding: 4px 10px;
      border-radius: 4px;
      transition: var(--transition);
    }
    .friend-links a:hover {
      color: var(--secondary);
      background: rgba(255,255,255,0.1);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .ai-page-home-link {
      font-weight: 700;
      color: var(--secondary) !important;
    }

    /* 悬浮客服面板 */
    .float-panel {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      cursor: pointer;
      font-size: 1.3rem;
      position: relative;
    }
    .float-popover {
      position: absolute;
      bottom: 60px;
      right: 0;
      background: var(--card-bg);
      border: 1px solid #E2E8F0;
      border-radius: 12px;
      padding: 16px;
      width: 220px;
      box-shadow: 0 8px 30px rgba(0,0,0,0.15);
      display: none;
      color: var(--text-main);
    }
    .float-popover.active {
      display: block;
    }
    .float-popover h5 {
      font-weight: 700;
      margin-bottom: 8px;
      font-size: 0.95rem;
      color: var(--primary);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.4rem; }
      .about-grid, .network-grid, .standards-grid, .contact-grid, .help-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .solution-content {
        grid-template-columns: 1fr;
      }
      .case-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid #ECEFF3;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-menu.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
      .case-grid, .reviews-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-section {
        padding: 80px 0 60px;
      }
    }