:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --neon-cyan: #06b6d4;
      --neon-emerald: #10b981;
      --neon-purple: #8b5cf6;
      --neon-gradient: linear-gradient(135deg, #0284c7 0%, #06b6d4 50%, #10b981 100%);
      --neon-glow: 0 10px 30px -10px rgba(6, 182, 212, 0.35);
      --border-color: #e2e8f0;
      --border-focus: #38bdf8;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-max: 1200px;
      --transition: all 0.28s ease;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    /* 统一居中容器体系 */
    .ai-container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

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

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--text-main);
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }

    .brand-badge {
      font-size: 0.75rem;
      background: rgba(6, 182, 212, 0.12);
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 20px;
      font-weight: 600;
      border: 1px solid rgba(6, 182, 212, 0.3);
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 6px;
      transition: var(--transition);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: rgba(2, 132, 199, 0.06);
    }

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

    .btn-nav-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      background: var(--neon-gradient);
      color: #ffffff !important;
      font-size: 0.9rem;
      font-weight: 600;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }

    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 区域公用规范 */
    .section-padding {
      padding: 80px 0;
      position: relative;
    }

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

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

    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: rgba(2, 132, 199, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
      border: 1px solid rgba(2, 132, 199, 0.2);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

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

    /* 首屏 HERO (无图片) */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 50% 10%, rgba(6, 182, 212, 0.12) 0%, rgba(248, 250, 252, 0) 70%), var(--bg-main);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #bae6fd;
      border-radius: 30px;
      font-size: 0.88rem;
      color: var(--primary-dark);
      box-shadow: 0 2px 8px rgba(2, 132, 199, 0.08);
      margin-bottom: 24px;
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background: var(--neon-emerald);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-emerald);
    }

    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      letter-spacing: -1px;
      line-height: 1.25;
      margin-bottom: 20px;
    }

    .hero-h1 span {
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 1.18rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-hero-official {
      padding: 14px 34px;
      border-radius: var(--radius-sm);
      background: var(--neon-gradient);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      text-decoration: none;
      box-shadow: var(--neon-glow);
      transition: var(--transition);
      border: 1px solid transparent;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-official:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px -8px rgba(6, 182, 212, 0.5);
    }

    .btn-hero-secondary {
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      background: #ffffff;
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 600;
      text-decoration: none;
      border: 1px solid var(--border-color);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
      transition: var(--transition);
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(2, 132, 199, 0.04);
    }

    /* 首屏数据指标卡片 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      text-align: left;
    }

    .stat-card {
      background: #ffffff;
      padding: 22px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-3px);
      border-color: var(--border-focus);
      box-shadow: 0 8px 24px rgba(6, 182, 212, 0.12);
    }

    .stat-val {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-family: inherit;
    }

    .stat-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-tip {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* 支持模型标签流动墙 */
    .models-bar {
      margin-top: 40px;
      padding: 20px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .models-title {
      font-size: 0.86rem;
      color: var(--text-light);
      font-weight: 600;
      text-align: center;
      margin-bottom: 14px;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-tag {
      font-size: 0.8rem;
      font-weight: 500;
      padding: 5px 12px;
      background: var(--bg-alt);
      color: var(--text-muted);
      border-radius: 6px;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

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

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

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

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

    /* 服务卡片 */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-cyan);
      box-shadow: 0 10px 28px rgba(6, 182, 212, 0.12);
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(6, 182, 212, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 18px;
      border: 1px solid rgba(6, 182, 212, 0.2);
    }

    .feature-name {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .feature-subtag {
      font-size: 0.74rem;
      padding: 3px 8px;
      background: var(--bg-alt);
      color: var(--text-light);
      border-radius: 4px;
    }

    /* 平台核心架构 */
    .platform-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    }

    .platform-intro-text {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .platform-pillar-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .pillar-item {
      padding: 20px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--primary);
    }

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

    .pillar-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

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

    .flow-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
      transition: var(--transition);
    }

    .flow-card:hover {
      border-color: var(--neon-emerald);
      transform: translateY(-3px);
    }

    .flow-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(2, 132, 199, 0.15);
      line-height: 1;
      margin-bottom: 12px;
    }

    .flow-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .flow-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测模块 */
    .review-score-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      color: #ffffff;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .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-badge-box {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-digit {
      font-size: 3.6rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
      font-family: inherit;
    }

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

    .star-row {
      color: #f59e0b;
      font-size: 1.25rem;
      margin-bottom: 4px;
    }

    .score-out {
      font-size: 0.88rem;
      color: #cbd5e1;
    }

    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .compare-table th {
      background: var(--bg-alt);
      color: var(--text-main);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 2px solid var(--border-color);
      white-space: nowrap;
    }

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

    .compare-table tr:hover td {
      background: rgba(2, 132, 199, 0.02);
    }

    .highlight-col {
      background: rgba(6, 182, 212, 0.04);
      font-weight: 600;
      color: var(--primary-dark) !important;
    }

    .badge-win {
      display: inline-block;
      padding: 2px 8px;
      background: rgba(16, 185, 129, 0.12);
      color: #059669;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 700;
      margin-left: 6px;
    }

    /* 案例展示区（带图片展示） */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

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

    .media-card-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.02);
    }

    .media-card-body {
      padding: 20px;
    }

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

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

    /* 行业方案与服务网络 */
    .network-badge-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .network-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 18px;
      text-align: center;
    }

    .network-city {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

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

    /* 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: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      border-color: var(--border-focus);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    }

    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--bg-alt);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--neon-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

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

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

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

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

    .faq-item.active {
      border-color: var(--border-focus);
      box-shadow: 0 4px 14px rgba(6, 182, 212, 0.08);
    }

    .faq-header {
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-main);
      background: #ffffff;
    }

    .faq-header:hover {
      background: rgba(2, 132, 199, 0.02);
      color: var(--primary);
    }

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

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

    .faq-body {
      padding: 0 22px 18px 22px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      display: none;
    }

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

    /* 资讯与百科 */
    .news-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }

    .news-card-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
    }

    .news-box-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .news-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .news-links-list li a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.92rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 12px;
      border-radius: 6px;
      background: var(--bg-alt);
      transition: var(--transition);
      word-break: break-all;
    }

    .news-links-list li a:hover {
      background: rgba(2, 132, 199, 0.08);
      color: var(--primary-dark);
    }

    /* 加盟代理模块 */
    .agent-banner {
      background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
      border-radius: var(--radius-lg);
      padding: 44px;
      color: #ffffff;
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .agent-content p {
      font-size: 1rem;
      line-height: 1.65;
      color: #e0f2fe;
      margin-bottom: 20px;
    }

    .agent-perks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      list-style: none;
    }

    .agent-perks li {
      font-size: 0.9rem;
      background: rgba(255, 255, 255, 0.15);
      padding: 8px 12px;
      border-radius: 6px;
    }

    .agent-cta-box {
      text-align: center;
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      color: var(--text-main);
    }

    .agent-cta-box h4 {
      font-size: 1.2rem;
      margin-bottom: 8px;
    }

    .agent-cta-box p {
      font-size: 0.86rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    /* 表单与联系模块 */
    .contact-grid {
      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-md);
      padding: 32px;
    }

    .contact-detail-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 28px;
    }

    .contact-detail-list li {
      font-size: 0.95rem;
      color: var(--text-muted);
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .contact-detail-list strong {
      color: var(--text-main);
      min-width: 75px;
    }

    .qr-box-wrap {
      text-align: center;
      padding: 20px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .qr-box-wrap img {
      max-width: 140px;
      height: auto;
      margin: 0 auto 10px auto;
      display: block;
      border-radius: 6px;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

    .form-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-subtitle {
      font-size: 0.88rem;
      color: var(--text-light);
      margin-bottom: 24px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
    }

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

    .btn-form-submit {
      width: 100%;
      padding: 12px;
      background: var(--neon-gradient);
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
      transition: var(--transition);
    }

    .btn-form-submit:hover {
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.35);
      transform: translateY(-1px);
    }

    /* 宣传图画廊 */
    .banner-gallery-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

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

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

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 24px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }

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

    .footer-links a,
    .ai-page-home-link {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: var(--transition);
    }

    .footer-links a:hover,
    .ai-page-home-link:hover {
      color: #38bdf8;
    }

    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.86rem;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 10px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-list a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.84rem;
      transition: var(--transition);
    }

    .friend-links-list a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 浮动操作栏 */
    .float-toolbar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      text-decoration: none;
      font-size: 1.1rem;
      cursor: pointer;
      transition: var(--transition);
    }

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

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-h1 {
        font-size: 2.2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .platform-pillar-grid {
        grid-template-columns: 1fr;
      }
      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .network-badge-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .agent-banner {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .news-wrap {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .banner-gallery-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        display: none;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px;
      }
      .hero-h1 {
        font-size: 1.8rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .grid-3, .grid-2, .grid-4 {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }