:root {
      --primary: #0d9488;
      --primary-dark: #0f766e;
      --primary-light: #14b8a6;
      --primary-bg: #f0fdfa;
      --accent: #0284c7;
      --accent-light: #38bdf8;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #ccfbf1;
      --border-subtle: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 12px rgba(13, 148, 136, 0.08);
      --shadow-lg: 0 10px 25px -5px rgba(13, 148, 136, 0.12);
      --radius: 12px;
      --max-width: 1200px;
      --transition: all 0.28s ease;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--bg-page);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 600px, #f8fafc 100%);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(204, 251, 241, 0.8);
      box-shadow: 0 2px 8px rgba(15, 23, 42, 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: 38px;
      width: auto;
      display: block;
    }

    .brand-title-box {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: 0.5px;
    }

    .brand-sub {
      font-size: 0.72rem;
      color: var(--text-light);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-link-item {
      display: block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 6px;
      transition: var(--transition);
      white-space: nowrap;
    }

    .nav-link-item:hover, .nav-link-item.active {
      color: var(--primary-dark);
      background-color: var(--primary-bg);
    }

    .ai-page-home-link {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--primary-dark);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 0.92rem;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
      line-height: 1.3;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(13, 148, 136, 0.25);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(13, 148, 136, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary-dark);
      border-color: var(--primary-light);
    }

    .btn-outline:hover {
      background: var(--primary-bg);
      border-color: var(--primary-dark);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 区域通用结构 */
    .section-block {
      padding: 70px 0;
      position: relative;
    }

    .section-block:nth-child(even) {
      background: linear-gradient(180deg, rgba(240, 253, 250, 0.4) 0%, rgba(248, 250, 252, 0.8) 100%);
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--primary-bg);
      border: 1px solid var(--border-color);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero 区域 (无图片) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      background: radial-gradient(circle at 50% 20%, rgba(204, 251, 241, 0.6) 0%, rgba(240, 253, 250, 0.3) 50%, transparent 80%);
      border-bottom: 1px solid rgba(204, 251, 241, 0.7);
    }

    .hero-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-dark);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

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

    .hero-subtitle {
      font-size: 1.12rem;
      color: var(--text-muted);
      max-width: 780px;
      margin-bottom: 36px;
      line-height: 1.75;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 44px;
    }

    .btn-hero-primary {
      font-size: 1.05rem;
      padding: 14px 34px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3);
      font-weight: 700;
    }

    .btn-hero-primary:hover {
      background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(13, 148, 136, 0.4);
    }

    .btn-hero-secondary {
      font-size: 1.05rem;
      padding: 14px 30px;
      border-radius: 10px;
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid var(--primary-light);
      box-shadow: var(--shadow-sm);
      font-weight: 600;
    }

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

    /* 数据指标网格 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      width: 100%;
      margin-top: 10px;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }

    .stat-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
      line-height: 1.2;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 模型阵列标签墙 */
    .models-bar-wrap {
      margin-top: 40px;
      width: 100%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 18px 22px;
      box-shadow: var(--shadow-sm);
    }

    .models-bar-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
      text-align: left;
    }

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

    .model-tag {
      font-size: 0.78rem;
      padding: 4px 10px;
      border-radius: 6px;
      background: var(--primary-bg);
      color: var(--primary-dark);
      border: 1px solid var(--border-color);
      font-weight: 500;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--primary-dark);
      color: #ffffff;
      border-color: var(--primary-dark);
    }

    /* 卡片网格布局 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 28px 24px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-color);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-bg);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 1.4rem;
    }

    .card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex: 1;
    }

    /* 场景矩阵列表 */
    .scene-item-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 22px 20px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
      border-left: 4px solid var(--primary-light);
    }

    .scene-item-card:hover {
      border-left-color: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .scene-badge-mini {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--primary-bg);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 8px;
    }

    .scene-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .scene-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 流程步骤条 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 26px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .step-box:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-number {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 对比评测表格与评分卡 */
    .review-highlight-box {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #f0fdfa 0%, #e0f2fe 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px 30px;
      margin-bottom: 30px;
      gap: 20px;
    }

    .score-banner {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-badge {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1;
    }

    .score-meta {
      display: flex;
      flex-direction: column;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.1rem;
      margin-bottom: 4px;
    }

    .score-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-subtle);
      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-subtle);
      font-size: 0.92rem;
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

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

    .compare-table .highlight-col {
      background: rgba(240, 253, 250, 0.7);
      color: var(--primary-dark);
      font-weight: 600;
    }

    .check-yes {
      color: var(--primary);
      font-weight: bold;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .check-no {
      color: #94a3b8;
    }

    /* 案例图片展示容器 */
    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-color);
    }

    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-wrap.square-wrap {
      aspect-ratio: 1 / 1;
    }

    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }

    .media-body {
      padding: 18px 20px;
      flex: 1;
    }

    .media-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .media-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
    }

    /* 宣传横幅图展示 */
    .banner-promo-wrap {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      margin: 30px 0;
    }

    .ai-page-image {
      display: block;
      width: 100%;
      height: auto;
    }

    /* Token 比价卡片 */
    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 22px 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .token-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .token-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      padding-bottom: 10px;
      border-bottom: 1px dashed var(--border-subtle);
    }

    .token-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .token-price {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--primary);
    }

    .token-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .token-meta-list {
      font-size: 0.82rem;
      color: var(--text-light);
      margin-top: auto;
      line-height: 1.6;
    }

    /* 用户评论卡片 */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-color);
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid #f1f5f9;
    }

    .user-avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-bg) 0%, #ccfbf1 100%);
      color: var(--primary-dark);
      font-weight: 700;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .user-name-role {
      display: flex;
      flex-direction: column;
    }

    .user-real-name {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-role-desc {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* 表单区域 */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px 32px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group-full {
      grid-column: 1 / -1;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.92rem;
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      background: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    .form-btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
    }

    /* FAQ 手风琴面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: var(--border-color);
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

    .faq-item.open .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    /* 行业资讯文章外链列表 */
    .article-links-container {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 24px;
      margin-top: 24px;
    }

    .article-links-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .article-links-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .article-link-tag {
      font-size: 0.88rem;
      padding: 8px 16px;
      background: var(--bg-page);
      border: 1px solid var(--border-subtle);
      border-radius: 6px;
      color: var(--primary-dark);
      font-weight: 500;
      transition: var(--transition);
    }

    .article-link-tag:hover {
      background: var(--primary-bg);
      border-color: var(--primary-light);
      color: var(--primary-dark);
    }

    /* 联系我们与客服网格 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .contact-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .contact-item-row {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }

    .contact-icon-box {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: var(--primary-bg);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .contact-info-text {
      display: flex;
      flex-direction: column;
    }

    .contact-info-label {
      font-size: 0.82rem;
      color: var(--text-light);
      margin-bottom: 2px;
    }

    .contact-info-val {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .qr-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .qr-img-wrap {
      max-width: 180px;
      margin: 0 auto 12px;
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      overflow: hidden;
      padding: 6px;
      background: #ffffff;
    }

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

    .qr-desc-text {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 友情链接与页脚 */
    .friend-links-box {
      background: #ffffff;
      border-top: 1px solid var(--border-subtle);
      padding: 28px 0;
    }

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

    .friend-links-label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .friend-links-wrap a {
      font-size: 0.86rem;
      color: var(--text-muted);
      padding: 4px 10px;
      border-radius: 4px;
      background: var(--bg-page);
      border: 1px solid var(--border-subtle);
    }

    .friend-links-wrap a:hover {
      color: var(--primary-dark);
      background: var(--primary-bg);
      border-color: var(--primary-light);
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 36px 0 28px;
      color: var(--text-muted);
      font-size: 0.88rem;
    }

    .footer-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 14px;
    }

    .footer-nav {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      font-size: 0.88rem;
    }

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

    .footer-copy {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* 浮动侧边栏与返回顶部 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 1.2rem;
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-3px);
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 12px;
      box-shadow: var(--shadow-lg);
      display: none;
      width: 150px;
      text-align: center;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: 4px;
    }

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

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-link-item {
        width: 100%;
        padding: 10px 12px;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .review-highlight-box {
        flex-direction: column;
        align-items: flex-start;
      }
    }