:root {
      --primary-cyan: #0fa4af;
      --primary-dark: #024959;
      --primary-light: #e8f9f8;
      --primary-glow: #14b8a6;
      --accent-teal: #0d9488;
      --accent-mint: #2dd4bf;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #0fa4af;
      --shadow-sm: 0 2px 8px rgba(15, 164, 175, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(2, 73, 89, 0.08), 0 8px 10px -6px rgba(2, 73, 89, 0.04);
      --shadow-lg: 0 20px 30px -10px rgba(2, 73, 89, 0.12);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

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

    /* 统一居中容器 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 统一板块样式 */
    section {
      padding: 72px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
      border-top: 1px solid #e6f4f2;
      border-bottom: 1px solid #e6f4f2;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }
    .badge-sub {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--primary-light);
      border: 1px solid rgba(15, 164, 175, 0.25);
      border-radius: 999px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-header h2 {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-header p {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
      object-fit: contain;
    }
    .brand-name {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .brand-tag {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid rgba(15, 164, 175, 0.2);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-cyan);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-dark) 100%);
      color: #ffffff !important;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 12px rgba(15, 164, 175, 0.25);
    }
    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(15, 164, 175, 0.35);
    }

    /* 移动端汉堡菜单 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* Hero 首屏（无图设计，纯 CSS 科技感） */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 80% 20%, #ddf7f5 0%, rgba(248, 250, 252, 0) 50%),
                  radial-gradient(circle at 10% 80%, #d5f2ef 0%, rgba(248, 250, 252, 0) 60%),
                  #f8fafc;
      border-bottom: 1px solid #e6f4f2;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.5rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.8px;
    }
    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-dark) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }
    .btn-hero-official {
      background: linear-gradient(135deg, #0fa4af 0%, #024959 100%);
      color: #ffffff !important;
      padding: 14px 34px;
      border-radius: var(--radius-sm);
      font-size: 1.05rem;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(15, 164, 175, 0.35);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }
    .btn-hero-official:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(15, 164, 175, 0.45);
    }
    .btn-hero-secondary {
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid #b2e4e1;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      font-size: 1.05rem;
      font-weight: 600;
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-secondary:hover {
      background: var(--primary-light);
      border-color: var(--primary-cyan);
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .hero-badge-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid #d1eae8;
      padding: 5px 12px;
      border-radius: 6px;
    }
    .hero-badge-item svg {
      color: var(--primary-cyan);
      width: 15px;
      height: 15px;
    }

    /* Hero 右侧纯 CSS 数据控制台面板（避免图片） */
    .hero-console-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid #d3eee9;
      box-shadow: var(--shadow-lg);
      padding: 24px;
      position: relative;
    }
    .console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 14px;
      border-bottom: 1px solid #f0f6f6;
      margin-bottom: 16px;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #f87171; }
    .dot-yellow { background: #fbbf24; }
    .dot-green { background: #34d399; }
    .console-title {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
      letter-spacing: 0.5px;
    }
    .console-status {
      font-size: 0.75rem;
      background: #e6fffa;
      color: #047857;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .console-stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }
    .stat-box {
      background: linear-gradient(145deg, #f7fdfc 0%, #f0faf8 100%);
      border: 1px solid #e2f4f1;
      padding: 14px;
      border-radius: var(--radius-md);
    }
    .stat-box .stat-label {
      font-size: 0.75rem;
      color: var(--text-light);
      margin-bottom: 4px;
    }
    .stat-box .stat-value {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary-dark);
    }
    .stat-box .stat-sub {
      font-size: 0.7rem;
      color: var(--accent-teal);
      margin-top: 2px;
    }

    .console-pipeline {
      background: #f8fafc;
      border-radius: var(--radius-sm);
      padding: 12px;
      border: 1px dashed #cde9e5;
    }
    .pipeline-title {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .pipeline-steps {
      display: flex;
      justify-content: space-between;
      gap: 6px;
    }
    .p-step {
      flex: 1;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 6px 4px;
      text-align: center;
      border-radius: 4px;
      font-size: 0.72rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .p-step.active {
      background: #0fa4af;
      color: #ffffff;
      border-color: #0fa4af;
    }

    /* 模型矩阵徽章云 */
    .models-marquee-wrap {
      margin-top: 48px;
      padding-top: 28px;
      border-top: 1px solid #e6f4f2;
    }
    .marquee-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      text-align: center;
      margin-bottom: 14px;
    }
    .models-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-chip {
      background: #ffffff;
      border: 1px solid #dbeefc;
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--primary-dark);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      border-color: var(--primary-cyan);
      transform: translateY(-2px);
    }

    /* 核心指标卡片 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }
    .metric-item {
      background: #ffffff;
      border: 1px solid #d8f0ed;
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .metric-num {
      font-size: 1.85rem;
      font-weight: 900;
      color: var(--primary-dark);
      line-height: 1.2;
    }
    .metric-name {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 网格通用布局 */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      align-items: stretch;
    }

    /* 服务卡片 */
    .card-feature {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .card-feature:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #83dcd5;
    }
    .feature-icon-box {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      border: 1px solid rgba(15, 164, 175, 0.3);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-cyan);
      margin-bottom: 18px;
      font-size: 1.4rem;
    }
    .card-feature h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .card-feature p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }
    .card-feature .feature-tag {
      margin-top: 14px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--accent-teal);
      background: #f0fdfa;
      padding: 3px 8px;
      border-radius: 4px;
      align-self: flex-start;
      border: 1px solid #ccfbf1;
    }

    /* 图文展示（真实图片规范） */
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #e2e8f0;
    }
    .media-img-wrap.square {
      aspect-ratio: 1 / 1;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }
    .media-card-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .media-card-body h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .media-card-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 流程步骤 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .flow-num {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-cyan), var(--primary-dark));
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 14px;
    }
    .flow-step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .flow-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 对比评测表格与卡片 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #024959 0%, #0fa4af 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .score-big {
      font-size: 3.6rem;
      font-weight: 900;
      line-height: 1;
      color: #ffffff;
    }
    .score-meta {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .score-stars {
      color: #fbbf24;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }
    .score-label {
      font-size: 0.95rem;
      opacity: 0.9;
    }
    .eval-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .eval-tag {
      background: rgba(255, 255, 255, 0.2);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 500;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }
    .compare-table th {
      background: #f1fafa;
      color: var(--primary-dark);
      font-weight: 700;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td.col-jingxuan {
      background: #f0fdfa;
      font-weight: 700;
      color: var(--primary-dark);
      border-left: 2px solid var(--primary-cyan);
      border-right: 2px solid var(--primary-cyan);
    }

    /* 用户评论 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .user-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      border: 1px solid #bceae6;
    }
    .user-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .user-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary-cyan);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      background: #ffffff;
    }
    .faq-question:hover {
      background: #f8fdfc;
      color: var(--primary-cyan);
    }
    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--text-light);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--primary-cyan);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fcfefe;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
    }
    .faq-answer-content {
      padding: 0 22px 18px 22px;
      border-top: 1px solid #f1f8f7;
    }

    /* 需求匹配与表单 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #ffffff;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary-cyan);
      box-shadow: 0 0 0 3px rgba(15, 164, 175, 0.15);
    }
    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }
    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      padding: 14px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(15, 164, 175, 0.3);
      transition: var(--transition);
    }
    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    /* 联系与服务信息卡 */
    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 22px;
    }
    .c-icon {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .c-detail h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .c-detail p, .c-detail a {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .qr-container {
      margin-top: 24px;
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px dashed #cfeae6;
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .qr-img-box {
      width: 100px;
      height: 100px;
      background: #ffffff;
      padding: 4px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    .qr-text h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .qr-text p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* 资讯文章列表 */
    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      margin-top: 20px;
    }
    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
      margin-top: 10px;
    }
    .article-links-list li a {
      background: #f0fdfa;
      border: 1px solid #ccfbf1;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--accent-teal);
      display: inline-block;
    }
    .article-links-list li a:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      border-color: var(--primary-cyan);
    }

    /* 友情链接与页脚 */
    .friend-links-box {
      padding: 24px 0;
      border-top: 1px solid #e8f3f2;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .friend-links-list a {
      color: var(--text-muted);
      font-size: 0.88rem;
    }
    .friend-links-list a:hover {
      color: var(--primary-cyan);
    }

    .site-footer {
      background: #022f3b;
      color: #cbd5e1;
      padding: 48px 0 28px 0;
      font-size: 0.9rem;
      border-top: 3px solid var(--primary-cyan);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 36px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 16px;
      position: relative;
    }
    .footer-col p {
      color: #94a3b8;
      font-size: 0.88rem;
      line-height: 1.65;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a {
      color: #cbd5e1;
      font-size: 0.88rem;
    }
    .footer-links-list a:hover {
      color: var(--accent-mint);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      color: #94a3b8;
      font-size: 0.82rem;
    }

    /* 悬浮客服与返回顶部 */
    .floating-actions {
      position: fixed;
      right: 20px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      cursor: pointer;
      transition: var(--transition);
      font-size: 1.1rem;
    }
    .float-btn:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      border-color: var(--primary-cyan);
      transform: translateY(-2px);
    }
    .float-btn-main {
      background: linear-gradient(135deg, var(--primary-cyan), var(--primary-dark));
      color: #ffffff;
      border: none;
    }

    /* 移动端响应式 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 20px;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 52px 0;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid #f1f5f9;
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 1.95rem;
      }
      .section-header h2 {
        font-size: 1.65rem;
      }
    }