:root {
      --bg-base: #f8fafc;
      --bg-surface: #ffffff;
      --bg-surface-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --neon-cyan: #06b6d4;
      --neon-violet: #8b5cf6;
      --neon-emerald: #10b981;
      --neon-accent: #3b82f6;
      --border-light: rgba(148, 163, 184, 0.2);
      --border-glow: rgba(59, 130, 246, 0.35);
      --glow-shadow: 0 10px 30px -10px rgba(6, 182, 212, 0.25);
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

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

    body::before {
      content: "";
      position: fixed;
      top: -200px;
      left: 50%;
      transform: translateX(-50%);
      width: 1000px;
      height: 600px;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.06) 45%, transparent 70%);
      z-index: -1;
      pointer-events: none;
    }

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .header-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: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }

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

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

    .nav-links a:hover {
      color: var(--neon-accent);
      background-color: rgba(59, 130, 246, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #0ea5e9, #3b82f6);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
    }

    .btn-neon {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #cbd5e1;
      position: relative;
      overflow: hidden;
    }

    .btn-neon:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-accent);
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
    }

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

    /* 模块通用标题 */
    .section-spacing {
      padding: 72px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(6, 182, 212, 0.1);
      color: #0284c7;
      border: 1px solid rgba(6, 182, 212, 0.25);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

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

    /* 首屏 Hero（无图片） */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
      text-align: center;
    }

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #0369a1;
      background: linear-gradient(90deg, rgba(6, 182, 212, 0.12), rgba(139, 92, 246, 0.12));
      padding: 6px 16px;
      border-radius: 30px;
      border: 1px solid rgba(6, 182, 212, 0.3);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto 36px;
      line-height: 1.6;
    }

    .hero-btn-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-btn-large {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: var(--radius-md);
    }

    /* 首屏数据指标卡片（几何纯代码构建） */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }

    .metric-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      box-shadow: var(--card-shadow);
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .metric-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-violet));
      opacity: 0;
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--glow-shadow);
      border-color: var(--neon-cyan);
    }

    .metric-card:hover::after {
      opacity: 1;
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: #0284c7;
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--text-sub);
      font-weight: 500;
    }

    /* 模型矩阵浮动标签云 */
    .model-tags-box {
      margin-top: 36px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.6);
      border: 1px dashed rgba(148, 163, 184, 0.5);
      border-radius: var(--radius-md);
    }

    .model-tags-box h4 {
      font-size: 0.9rem;
      color: var(--text-sub);
      margin-bottom: 12px;
      font-weight: 600;
    }

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

    .model-pill {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
      background: #ffffff;
      padding: 4px 12px;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
      transition: var(--transition);
    }

    .model-pill:hover {
      color: #0284c7;
      border-color: var(--neon-cyan);
      box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-text-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

    .intro-feature-list {
      list-style: none;
      display: grid;
      gap: 16px;
      margin-top: 24px;
    }

    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .intro-bullet {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.15);
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 3px;
    }

    .intro-feature-item strong {
      color: var(--text-main);
      display: block;
      font-size: 1rem;
      margin-bottom: 2px;
    }

    .intro-feature-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .intro-media-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--card-shadow);
    }

    .media-aspect-wrapper {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-lg);
    }

    .media-aspect-wrapper img {
      width: 100%;
      height: auto;
      object-fit: cover;
      transition: var(--transition);
    }

    .media-aspect-wrapper:hover img {
      transform: scale(1.03);
    }

    /* AIGC 服务与场景应用 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 14px 30px -10px rgba(59, 130, 246, 0.2);
      border-color: rgba(59, 130, 246, 0.4);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 1.25rem;
      color: #0284c7;
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

    .service-foot-tag {
      font-size: 0.8rem;
      color: #2563eb;
      font-weight: 600;
      display: inline-block;
    }

    /* 行业解决方案与全景展示 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .solution-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--card-shadow);
    }

    .solution-item h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .solution-item p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    .solution-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .sol-pill {
      background: var(--bg-surface-alt);
      color: var(--text-muted);
      font-size: 0.82rem;
      padding: 4px 10px;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
    }

    /* 对比评测板块 */
    .eval-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--card-shadow);
    }

    .eval-rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(59, 130, 246, 0.08));
      border: 1px solid rgba(59, 130, 246, 0.2);
      border-radius: var(--radius-md);
      padding: 24px 30px;
      margin-bottom: 32px;
      gap: 20px;
    }

    .rating-title-group h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .rating-title-group p {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    .rating-score-block {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .score-value {
      font-size: 2.2rem;
      font-weight: 900;
      color: #0284c7;
      line-height: 1;
    }

    .score-max {
      font-size: 1rem;
      color: var(--text-sub);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

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

    .comparison-table th {
      background-color: var(--bg-surface-alt);
      color: var(--text-main);
      font-weight: 700;
    }

    .comparison-table tr:hover {
      background-color: rgba(248, 250, 252, 0.8);
    }

    .highlight-cell {
      color: #0284c7;
      font-weight: 700;
      background: rgba(6, 182, 212, 0.03);
    }

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

    .step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .step-badge {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--neon-accent);
      margin-bottom: 10px;
      display: inline-block;
    }

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

    .step-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .case-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .case-img-box {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #e2e8f0;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

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

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

    .case-content h3 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .case-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
      flex-grow: 1;
    }

    .case-tag {
      font-size: 0.78rem;
      font-weight: 600;
      color: #0284c7;
      background: rgba(6, 182, 212, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
      align-self: flex-start;
    }

    /* 用户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 0.93rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

    .review-user-box {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid var(--border-light);
    }

    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-accent));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .review-meta h4 {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 600;
    }

    .review-meta p {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 加盟代理与被动收益 */
    .agent-box {
      background: linear-gradient(135deg, #f0fdf4 0%, #ecfeff 100%);
      border: 1px solid rgba(16, 185, 129, 0.3);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      box-shadow: var(--card-shadow);
    }

    .agent-content h3 {
      font-size: 1.8rem;
      color: #065f46;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .agent-content p {
      font-size: 1rem;
      color: #166534;
      line-height: 1.6;
      margin-bottom: 24px;
    }

    .agent-perks {
      display: grid;
      gap: 12px;
      margin-bottom: 28px;
    }

    .agent-perk-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: #064e3b;
      font-weight: 600;
    }

    .agent-perk-item::before {
      content: "✔";
      color: var(--neon-emerald);
      font-weight: 900;
    }

    /* 需求匹配与联系我们（表单区） */
    .contact-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .contact-info-panel {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

    .contact-methods {
      margin-top: 24px;
      display: grid;
      gap: 18px;
    }

    .method-row {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .method-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--bg-surface-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: #0284c7;
      flex-shrink: 0;
    }

    .contact-qr-block {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .qr-container {
      width: 110px;
      height: 110px;
      border: 1px solid var(--border-light);
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
    }

    .qr-desc h4 {
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

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

    .form-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      background-color: #ffffff;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }

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

    /* FAQ 板块 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(6, 182, 212, 0.35);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-arrow {
      font-size: 0.85rem;
      transition: transform 0.3s ease;
      color: var(--text-sub);
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--neon-accent);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fafafa;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      padding: 0 24px 20px;
      max-height: 250px;
    }

    /* 行业资讯与AI百科推荐 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--glow-shadow);
    }

    .article-card h3 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.5;
    }

    .article-link {
      font-size: 0.88rem;
      color: #0284c7;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 宣传图画廊 */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 40px;
    }

    .banner-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--card-shadow);
    }

    .banner-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .banner-item:hover img {
      transform: scale(1.04);
    }

    /* 友情链接与页脚 */
    .footer-section {
      background: #ffffff;
      border-top: 1px solid var(--border-light);
      padding: 50px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-links-box {
      padding-bottom: 24px;
      margin-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
    }

    .footer-links-box h4 {
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
    }

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

    .friend-links a:hover {
      color: #0284c7;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 悬浮客服面板 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-light);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: #0284c7;
      cursor: pointer;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.1);
      box-shadow: var(--glow-shadow);
      border-color: var(--neon-cyan);
    }

    .back-top-btn {
      display: none;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .banner-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        text-align: center;
        padding: 12px;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .intro-grid,
      .solutions-grid,
      .contact-form-grid,
      .agent-box {
        grid-template-columns: 1fr;
      }
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid,
      .banner-gallery-grid,
      .flow-steps-grid,
      .hero-metrics-grid {
        grid-template-columns: 1fr;
      }
      .section-spacing {
        padding: 48px 0;
      }
      .eval-rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }