:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-cyan: #06b6d4;
      --accent-coral: #f43f5e;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --border-color: #e2e8f0;
      --border-focus: #6366f1;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
      --shadow-color: 0 10px 25px -5px rgba(79, 70, 229, 0.15);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-max: 1200px;
    }

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

    html {
      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-main);
      line-height: 1.6;
      scroll-behavior: smooth;
    }

    body {
      overflow-x: hidden;
      background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f8fafc 100%);
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--accent-coral);
    }

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

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

    /* 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: 2px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-badge {
      background: linear-gradient(135deg, var(--accent-coral), var(--accent-amber));
      color: #ffffff;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

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

    .nav-menu li a {
      color: var(--text-main);
      font-size: 0.95rem;
      font-weight: 600;
      padding: 6px 10px;
      border-radius: var(--radius-sm);
    }

    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: var(--primary);
      background-color: var(--bg-alt);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 2px solid transparent;
      text-align: center;
      line-height: 1.2;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
    }

    .btn-coral {
      background: linear-gradient(135deg, var(--accent-coral), var(--accent-amber));
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(244, 63, 94, 0.35);
    }

    .btn-coral:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(244, 63, 94, 0.45);
    }

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

    .btn-outline:hover {
      background-color: var(--primary);
      color: #ffffff !important;
    }

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

    /* 页面通用标题与容器 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-wrap.alt-bg {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      background: rgba(79, 70, 229, 0.1);
      color: var(--primary);
      margin-bottom: 12px;
      border: 1px solid rgba(79, 70, 229, 0.2);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 首屏 Hero 区域（禁止出现图片） */
    .hero-section {
      padding: 70px 0 90px 0;
      background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15), transparent 40%),
                  radial-gradient(circle at 10% 80%, rgba(244, 63, 94, 0.12), transparent 40%),
                  #ffffff;
      border-bottom: 2px solid var(--border-color);
      position: relative;
    }

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

    .hero-content {
      text-align: left;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 20px;
    }

    .hero-badge-item {
      font-size: 0.85rem;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-badge-item span {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--accent-emerald);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.2;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title-highlight {
      background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 35px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .hero-stats-panel {
      background: linear-gradient(145deg, #ffffff, var(--bg-alt));
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-color);
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      transition: transform 0.25s ease;
    }

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

    .stat-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
    }

    /* 撞色卡片与服务网格 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
      gap: 25px;
    }

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

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

    .feature-card {
      background: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 6px;
      height: 100%;
      background: var(--primary);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      border-color: var(--primary);
      box-shadow: var(--shadow-lg);
    }

    .feature-card:hover::before {
      opacity: 1;
    }

    .card-icon-box {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      font-weight: 900;
    }

    .icon-violet { background: rgba(79, 70, 229, 0.12); color: var(--primary); }
    .icon-cyan { background: rgba(6, 182, 212, 0.12); color: var(--accent-cyan); }
    .icon-coral { background: rgba(244, 63, 94, 0.12); color: var(--accent-coral); }
    .icon-amber { background: rgba(245, 158, 11, 0.12); color: var(--accent-amber); }
    .icon-emerald { background: rgba(16, 185, 129, 0.12); color: var(--accent-emerald); }

    .card-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .card-tag-item {
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 8px;
      background: var(--bg-alt);
      color: var(--text-main);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    /* 平台聚合标签云 */
    .model-matrix-wrap {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 35px;
      box-shadow: var(--shadow-sm);
    }

    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    .model-pill {
      font-size: 0.95rem;
      font-weight: 700;
      padding: 10px 20px;
      border-radius: var(--radius-full);
      background: var(--bg-main);
      color: var(--text-main);
      border: 2px solid var(--border-color);
      transition: all 0.25s ease;
      cursor: default;
    }

    .model-pill:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: scale(1.05);
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }

    /* 流程步骤与时间线 */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
      position: relative;
    }

    .workflow-item {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      position: relative;
      transition: transform 0.25s ease;
    }

    .workflow-item:hover {
      transform: translateY(-4px);
      border-color: var(--accent-coral);
    }

    .step-badge {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--accent-coral);
      color: #ffffff;
      font-weight: 900;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      font-size: 0.95rem;
    }

    .workflow-title {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

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

    /* 对比评测模块（五星、9.9分） */
    .review-score-banner {
      background: linear-gradient(135deg, #1e1b4b, #312e81);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 35px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 25px;
      margin-bottom: 35px;
      box-shadow: var(--shadow-lg);
      border: 2px solid var(--primary);
    }

    .score-left h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 8px;
    }

    .score-stars {
      color: #fbbf24;
      font-size: 1.5rem;
      letter-spacing: 4px;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 10px;
      background: rgba(255, 255, 255, 0.1);
      padding: 15px 30px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .score-big {
      font-size: 3.5rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .score-max {
      font-size: 1.2rem;
      color: #cbd5e1;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 700px;
    }

    .compare-table th, 
    .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background-color: var(--bg-alt);
      font-weight: 800;
      font-size: 1.05rem;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background-color: rgba(79, 70, 229, 0.03);
    }

    .td-highlight {
      font-weight: 800;
      color: var(--primary);
      background-color: rgba(79, 70, 229, 0.05);
    }

    .check-yes {
      color: var(--accent-emerald);
      font-weight: 800;
    }

    .check-no {
      color: var(--text-light);
    }

    /* 案例展示 */
    .case-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent-cyan);
    }

    .case-img-wrap {
      width: 100%;
      height: 220px;
      background-color: var(--bg-alt);
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .case-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    /* 用户真实评价 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .review-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 1rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 15px;
    }

    .user-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }

    .user-meta-name {
      font-weight: 800;
      color: var(--text-main);
      font-size: 0.95rem;
    }

    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 需求匹配与表单 */
    .form-section-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 45px;
      box-shadow: var(--shadow-lg);
    }

    .form-info h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .form-info p {
      color: var(--text-muted);
      margin-bottom: 25px;
      line-height: 1.7;
    }

    .contact-item-box {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 18px;
    }

    .contact-item-box .icon-box {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
    }

    .custom-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
      text-align: left;
    }

    .form-label {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-main);
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      color: var(--text-main);
      background-color: var(--bg-main);
      transition: border-color 0.25s ease;
      outline: none;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--border-focus);
      background-color: #ffffff;
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

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

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      padding: 20px 24px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      color: var(--text-main);
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 900;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--accent-coral);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      background-color: var(--bg-main);
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 16px 24px 24px 24px;
      max-height: 300px;
    }

    /* 文章列表与资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .news-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .news-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.25s ease;
    }

    .news-item:hover {
      border-color: var(--primary);
      transform: translateX(4px);
      box-shadow: var(--shadow-sm);
    }

    .news-link {
      font-weight: 700;
      color: var(--text-main);
      font-size: 1rem;
    }

    .news-link:hover {
      color: var(--primary);
    }

    .news-tag {
      font-size: 0.75rem;
      background: var(--bg-alt);
      padding: 4px 10px;
      border-radius: var(--radius-full);
      color: var(--text-light);
      white-space: nowrap;
    }

    .articles-shortcode-box {
      background: #ffffff;
      border: 2px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      margin-top: 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* 页脚设计 */
    .site-footer {
      background-color: #0f172a;
      color: #cbd5e1;
      padding: 70px 0 30px 0;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 30px;
      height: 3px;
      background: var(--accent-cyan);
      border-radius: var(--radius-full);
    }

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

    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .footer-qrcode-wrap {
      display: flex;
      align-items: center;
      gap: 15px;
      background: rgba(255, 255, 255, 0.05);
      padding: 15px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-qrcode-wrap img {
      width: 90px;
      height: 90px;
      border-radius: var(--radius-sm);
      background: #ffffff;
      padding: 4px;
    }

    .footer-qrcode-text {
      font-size: 0.85rem;
      color: #cbd5e1;
      line-height: 1.5;
    }

    .friend-links-box {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 30px;
      margin-bottom: 30px;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 15px;
    }

    .friend-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 20px;
    }

    .friend-links-flex a {
      color: #94a3b8;
      font-size: 0.85rem;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .friend-links-flex a:hover {
      color: #ffffff;
      background: var(--primary);
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 25px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动组件 */
    .float-tools {
      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;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-lg);
      border: 2px solid var(--border-color);
      cursor: pointer;
      transition: all 0.25s ease;
      font-weight: 900;
      font-size: 1.1rem;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: scale(1.1);
    }

    .float-kefu-modal {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 15px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 2px solid var(--primary);
      width: 160px;
      text-align: center;
    }

    .float-kefu-wrap:hover .float-kefu-modal {
      display: block;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid,
      .form-section-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .card-grid-3,
      .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 10px;
      }
      .nav-menu.show {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .card-grid-3,
      .card-grid-4,
      .review-grid,
      .hero-stats-panel {
        grid-template-columns: 1fr;
      }
      .workflow-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }