:root {
      --primary: #0052ff;
      --primary-hover: #0040cc;
      --primary-light: #eef4ff;
      --accent: #00c2ff;
      --accent-warm: #ff5e3a;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 20px rgba(0,82,255,0.08);
      --shadow-lg: 0 16px 36px rgba(15,23,42,0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background: radial-gradient(circle at 10% 0%, rgba(0, 194, 255, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(0, 82, 255, 0.06) 0%, transparent 45%),
                  var(--bg-page);
    }

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

    .container {
      width: 100%;
      max-width: var(--container-width);
      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: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

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

    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

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

    .brand-badge {
      font-size: 0.7rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #1e6fff 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
      box-shadow: 0 6px 18px rgba(0, 82, 255, 0.4);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }

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

    .btn-highlight {
      background: linear-gradient(135deg, #00c2ff 0%, #0052ff 100%);
      color: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 194, 255, 0.35);
    }

    .btn-highlight:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 194, 255, 0.5);
    }

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

    /* 区域通用样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.825rem;
      font-weight: 700;
      border-radius: 50px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO（纯 CSS/文字/组件结构，严禁图片） */
    .hero-section {
      padding: 70px 0 60px 0;
      position: relative;
      overflow: hidden;
    }

    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: #e0f2fe;
      border: 1px solid #bae6fd;
      color: #0284c7;
      border-radius: 30px;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-tag-dot {
      width: 8px;
      height: 8px;
      background: #0284c7;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
    }

    .hero-title {
      font-size: 2.7rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #0052ff 0%, #00c2ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
      align-items: center;
    }

    .hero-stats-inline {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .stat-item h4 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }

    .stat-item p {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-top: 2px;
    }

    /* 首屏纯 CSS 交互卡片组 */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid #dbeafe;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0, 82, 255, 0.08);
      position: relative;
    }

    .card-top-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid #f1f5f9;
    }

    .engine-status {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      font-weight: 700;
      color: #0f172a;
    }

    .status-indicator {
      width: 10px;
      height: 10px;
      background: #10b981;
      border-radius: 50%;
    }

    .model-pills {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-bottom: 20px;
    }

    .model-pill {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 10px;
      border-radius: var(--radius-sm);
      text-align: center;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--text-muted);
      transition: all 0.2s;
    }

    .model-pill.active {
      background: var(--primary-light);
      border-color: #93c5fd;
      color: var(--primary);
    }

    .console-mockup {
      background: #0f172a;
      border-radius: var(--radius-md);
      padding: 18px;
      color: #e2e8f0;
      font-family: monospace;
      font-size: 0.85rem;
      margin-bottom: 18px;
    }

    .console-line {
      margin-bottom: 6px;
      display: flex;
      gap: 8px;
    }

    .console-line .prompt {
      color: #38bdf8;
    }

    .console-line .success {
      color: #4ade80;
    }

    .hero-card-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 平台介绍 / 核心卖点 */
    .about-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .about-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .about-card {
      background: #f8fafc;
      border: 1px solid #edf2f7;
      padding: 24px;
      border-radius: var(--radius-md);
      transition: all 0.25s;
    }

    .about-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #bfdbfe;
      background: #ffffff;
    }

    .about-card-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
      font-weight: 800;
    }

    .about-card h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .about-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 矩阵场景服务网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .service-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: all 0.25s;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .service-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .service-tag {
      font-size: 0.75rem;
      background: #eff6ff;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .service-item h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .service-item p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 16px;
    }

    .service-features {
      list-style: none;
      margin-top: auto;
      padding-top: 12px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .service-features li {
      font-size: 0.75rem;
      color: var(--text-light);
      background: #f1f5f9;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 支持的大模型支持列表标签云 */
    .supported-models-bar {
      margin-top: 40px;
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      text-align: center;
    }

    .models-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-chip {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
    }

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

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 28px 20px;
      border-radius: var(--radius-md);
      text-align: center;
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 4px 10px rgba(0, 82, 255, 0.25);
    }

    .step-card h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-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;
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      background: #e2e8f0;
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .case-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      color: #0284c7;
      background: #e0f2fe;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .case-body h3 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    /* 评测对比与评分 */
    .review-score-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-lg);
    }

    .score-left h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: #ffffff;
    }

    .score-left p {
      color: #94a3b8;
      font-size: 0.95rem;
    }

    .score-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-badge-circle {
      text-align: right;
    }

    .rating-num {
      font-size: 3rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .rating-max {
      font-size: 1.1rem;
      color: #64748b;
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 1.25rem;
      letter-spacing: 2px;
      margin-top: 4px;
    }

    .comparison-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.925rem;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

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

    .compare-table tr:hover td {
      background: #fdfdfe;
    }

    .highlight-col {
      background: #f0f7ff;
      font-weight: 700;
      color: var(--primary);
    }

    .check-yes {
      color: #10b981;
      font-weight: 800;
    }

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

    /* 需求匹配与表单 */
    .form-wrapper-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

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

    .form-group.full-width {
      grid-column: span 2;
    }

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #f8fafc;
      outline: none;
      transition: all 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.12);
    }

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

    /* 用户评论 */
    .reviews-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-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-initial {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }

    .reviewer-info h4 {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 700;
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .review-content {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .review-rating {
      color: #fbbf24;
      font-size: 0.85rem;
    }

    /* FAQ 手风琴面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }

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

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

    /* 行业资讯 & AI 百科 */
    .news-wrapper {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .news-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .news-box h3 {
      font-size: 1.15rem;
      margin-bottom: 16px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--primary-light);
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .news-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .news-list li a {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.9rem;
      color: var(--text-muted);
      padding: 6px 0;
      border-bottom: 1px dashed #f1f5f9;
    }

    .news-list li a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

    /* 加盟代理模块 */
    .partner-banner {
      background: linear-gradient(135deg, #0052ff 0%, #00c2ff 100%);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 16px 32px rgba(0, 82, 255, 0.25);
    }

    .partner-info h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: #ffffff;
    }

    .partner-info p {
      font-size: 1rem;
      color: rgba(255, 255, 255, 0.9);
      max-width: 600px;
    }

    .partner-actions {
      display: flex;
      gap: 14px;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 24px 0;
      color: var(--text-muted);
    }

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

    .footer-brand h4 {
      font-size: 1.2rem;
      color: var(--text-main);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.875rem;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-links li a {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    .footer-links li a:hover {
      color: var(--primary);
    }

    .footer-contact-info {
      font-size: 0.875rem;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .qr-card {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 12px;
      background: #f8fafc;
      padding: 10px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .qr-card img {
      width: 64px;
      height: 64px;
      border-radius: 4px;
    }

    .qr-text {
      font-size: 0.775rem;
      color: var(--text-light);
    }

    .friend-links-bar {
      border-top: 1px solid var(--border-color);
      padding: 20px 0;
      font-size: 0.825rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }

    .friend-links-bar span {
      font-weight: 700;
      color: var(--text-main);
    }

    .friend-links-bar a {
      color: var(--text-muted);
    }

    .friend-links-bar a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 0.825rem;
      color: var(--text-light);
    }

    /* 悬浮工具栏 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      cursor: pointer;
      transition: all 0.25s;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式断点适配 */
    @media (max-width: 992px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, 
      .case-grid, 
      .reviews-grid, 
      .steps-wrapper {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-banner {
        flex-direction: column;
        text-align: center;
        gap: 24px;
      }
      .review-score-banner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
      }
      .score-badge-circle {
        text-align: center;
      }
    }

    @media (max-width: 768px) {
      .nav-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-action-group {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .services-grid, 
      .about-grid, 
      .case-grid, 
      .reviews-grid, 
      .steps-wrapper,
      .news-wrapper {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }