:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --secondary: #0ea5e9;
      --accent: #f97316;
      --accent-light: #fff7ed;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-dark: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 12px rgba(15,23,42,0.08);
      --shadow-lg: 0 10px 25px -5px rgba(37,99,235,0.12);
      --radius: 12px;
      --radius-sm: 6px;
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.6;
      overflow-x: hidden;
      font-size: 15px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-area .logo-box {
      max-width: 150px;
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      padding: 8px 14px;
      font-weight: 500;
      color: var(--text-dark);
      font-size: 15px;
      border-radius: var(--radius-sm);
    }
    .nav-links a:hover {
      color: var(--primary);
      background-color: #f1f5f9;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff !important;
      padding: 8px 18px;
      border-radius: 20px;
      font-weight: 600;
      font-size: 14px;
      box-shadow: 0 2px 6px rgba(37,99,235,0.25);
    }
    .btn-nav-primary:hover {
      box-shadow: 0 4px 12px rgba(37,99,235,0.35);
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 18px;
      color: var(--text-dark);
    }

    /* 首屏 Hero (严格无图片) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #e0f2fe 0%, #f8fafc 60%);
      padding: 84px 0 64px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 36px;
    }
    .hero-btns {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-hero-glow {
      background: linear-gradient(135deg, #2563eb 0%, #0284c7 100%);
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: 30px;
      box-shadow: 0 8px 20px rgba(37,99,235,0.3);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-hero-glow:hover {
      box-shadow: 0 12px 28px rgba(37,99,235,0.4);
      transform: translateY(-2px);
    }
    .btn-hero-outline {
      background: #ffffff;
      color: var(--text-dark);
      font-size: 16px;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #f8fafc;
    }
    .hero-data-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: left;
    }
    .hero-data-item .val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      display: block;
    }
    .hero-data-item .lbl {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块与标题 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid #edf2f7;
    }
    .section-header {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 52px auto;
    }
    .section-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-intro {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 卡片体系 */
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .standard-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .standard-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }
    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
      font-weight: bold;
    }
    .standard-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
    }
    .standard-card p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-item {
      font-size: 12px;
      background: #f1f5f9;
      color: var(--text-muted);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 平台介绍大区 */
    .intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      margin-bottom: 40px;
      box-shadow: var(--shadow-sm);
    }
    .intro-cols {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .intro-text h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .intro-text p {
      margin-bottom: 14px;
      line-height: 1.7;
    }
    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      background: #f8fafc;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
    }
    .model-badge {
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-dark);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 6px;
      box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
    }
    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      font-size: 14px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例图片区 (合规引入要求资源) */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .showcase-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .showcase-img-wrap {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .showcase-card:hover .showcase-img-wrap img {
      transform: scale(1.04);
    }
    .showcase-info {
      padding: 20px;
      flex-grow: 1;
    }
    .showcase-info h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .showcase-info p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格 */
    .compare-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-score-banner {
      background: linear-gradient(135deg, #1e293b, #0f172a);
      color: #ffffff;
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .score-left p {
      font-size: 14px;
      color: #94a3b8;
    }
    .score-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-box {
      text-align: right;
    }
    .score-val {
      font-size: 38px;
      font-weight: 800;
      color: #38bdf8;
      line-height: 1;
    }
    .score-star {
      color: #fbbf24;
      font-size: 18px;
      letter-spacing: 2px;
      margin-top: 4px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-dark);
    }
    .col-highlight {
      background-color: #f0f7ff;
      font-weight: 600;
      color: var(--primary);
    }
    .compare-table td.col-highlight {
      color: var(--text-dark);
    }

    /* 评论板块 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-content {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .user-avatar-char {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #dbeafe;
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }
    .user-info .name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .user-info .role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 折叠组件 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #f8fafc;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 需求匹配表单与联系 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
    }
    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .contact-meta-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }
    .meta-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    .meta-text strong {
      display: block;
      color: var(--text-dark);
      font-size: 14px;
      margin-bottom: 2px;
    }
    .meta-text span, .meta-text a {
      color: var(--text-muted);
      font-size: 14px;
    }
    .qrcode-box {
      text-align: center;
      padding-top: 10px;
      border-top: 1px solid var(--border-color);
    }
    .qrcode-box img {
      width: 130px;
      height: 130px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      padding: 4px;
      background: #ffffff;
    }
    .qrcode-box p {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 6px;
    }
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-dark);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
    }
    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      border: none;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37,99,235,0.25);
    }
    .btn-submit:hover {
      box-shadow: 0 6px 18px rgba(37,99,235,0.35);
    }

    /* 资讯与外链板块 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 30px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
    }
    .article-card h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-dark);
    }
    .article-card a {
      color: var(--primary);
      font-size: 13px;
      word-break: break-all;
    }
    .article-card a:hover {
      text-decoration: underline;
    }

    /* 代理加盟政策条 */
    .agent-cta-box {
      background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
      color: #ffffff;
      border-radius: var(--radius);
      padding: 44px;
      text-align: center;
      margin-top: 40px;
    }
    .agent-cta-box h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .agent-cta-box p {
      font-size: 15px;
      color: #cbd5e1;
      max-width: 680px;
      margin: 0 auto 24px auto;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px 0;
      color: var(--text-body);
    }
    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 36px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links-wrap a {
      font-size: 13px;
      color: var(--text-muted);
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
    }
    .friend-links-wrap a:hover {
      background: #e2e8f0;
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 浮动组件 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      color: var(--text-dark);
      font-size: 18px;
      transition: all 0.25s;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .card-grid-3, .card-grid-4, .showcase-grid, .review-grid, .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-data-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .header-inner {
        position: relative;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 12px 24px;
        text-align: left;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .card-grid-3, .card-grid-4, .card-grid-2, .showcase-grid, .review-grid, .article-grid, .intro-cols, .contact-layout {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .hero-data-bar {
        grid-template-columns: 1fr;
      }
      .footer-content {
        grid-template-columns: 1fr;
      }
      .compare-score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .score-right {
        width: 100%;
        justify-content: space-between;
      }
    }