:root {
      --bg-primary: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --neon-cyan: #06b6d4;
      --neon-violet: #8b5cf6;
      --neon-emerald: #10b981;
      --neon-amber: #f59e0b;
      --neon-pink: #ec4899;
      --border-light: rgba(148, 163, 184, 0.25);
      --border-glow: rgba(6, 182, 212, 0.45);
      --gradient-brand: linear-gradient(135deg, #0ea5e9, #8b5cf6 50%, #ec4899);
      --gradient-cyan: linear-gradient(135deg, #06b6d4, #3b82f6);
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
      --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 16px 36px -8px rgba(14, 165, 233, 0.16), 0 0 18px rgba(6, 182, 212, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      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-primary);
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 90% 60%, rgba(139, 92, 246, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 99;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

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

    .brand-tag {
      font-size: 0.75rem;
      background: rgba(6, 182, 212, 0.12);
      color: #0284c7;
      padding: 2px 8px;
      border-radius: 99px;
      border: 1px solid rgba(6, 182, 212, 0.3);
      font-weight: 600;
    }

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

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

    .nav-item a:hover {
      color: #0284c7;
      background: rgba(14, 165, 233, 0.08);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 99px;
      cursor: pointer;
      border: none;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }

    .btn-glow {
      background: var(--gradient-brand);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(14, 165, 233, 0.35);
    }

    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
    }

    .btn-outline {
      border: 1px solid var(--border-light);
      background: #ffffff;
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--neon-cyan);
      color: #0284c7;
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-light);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      color: var(--text-main);
      font-size: 1.1rem;
    }

    /* 首屏纯文字与CSS动效视觉区 - 无图片 */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
      text-align: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-glow);
      padding: 6px 18px;
      border-radius: 99px;
      margin-bottom: 24px;
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.12);
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      background: var(--neon-emerald);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--neon-emerald);
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    .badge-text {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-sub);
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }

    .hero-highlight {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      position: relative;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .hero-main-btn {
      font-size: 1.1rem;
      padding: 14px 36px;
    }

    /* 首屏数据指标卡片 - 纯 CSS 视觉 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      max-width: 1040px;
      margin: 0 auto;
    }

    .metric-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: transform 0.25s, border-color 0.25s;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient-brand);
      opacity: 0.7;
    }

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

    .metric-value {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
      font-family: Consolas, monospace, sans-serif;
    }

    .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块排版 */
    .section {
      padding: 80px 0;
      position: relative;
    }

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

    .section-eyebrow {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: #0284c7;
      background: rgba(14, 165, 233, 0.1);
      padding: 4px 12px;
      border-radius: 99px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 平台介绍与架构板块 */
    .platform-intro-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: center;
    }

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

    .intro-text-box h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .intro-features-list {
      list-style: none;
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .feature-icon-badge {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.12);
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.85rem;
      flex-shrink: 0;
    }

    .feature-desc-text strong {
      display: block;
      color: var(--text-main);
      font-size: 0.95rem;
      margin-bottom: 2px;
    }

    .feature-desc-text span {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .media-card-wrap {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 16px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }

    .media-card-wrap img {
      display: block;
      border-radius: var(--radius-md);
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 模型矩阵胶囊群 */
    .models-marquee-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 40px;
      box-shadow: var(--shadow-sm);
    }

    .models-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-sub);
      text-align: center;
      margin-bottom: 16px;
    }

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

    .model-tag {
      background: #f1f5f9;
      color: var(--text-main);
      font-size: 0.82rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 99px;
      border: 1px solid rgba(203, 213, 225, 0.7);
      transition: all 0.2s;
    }

    .model-tag:hover {
      background: rgba(14, 165, 233, 0.1);
      color: #0284c7;
      border-color: var(--neon-cyan);
      transform: translateY(-2px);
    }

    /* 场景与能力网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.28s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--neon-cyan);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .service-card h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-tag-row {
      margin-top: 16px;
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .service-chip {
      font-size: 0.75rem;
      background: #f8fafc;
      color: var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

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

    .workflow-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .workflow-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(14, 165, 233, 0.2);
      line-height: 1;
      margin-bottom: 12px;
      font-family: Consolas, monospace;
    }

    .workflow-card h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .workflow-card p {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 案例中心展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

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

    .case-img-box {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #e2e8f0;
    }

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

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

    .case-content {
      padding: 24px;
      flex-grow: 1;
    }

    .case-content h4 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-content p {
      font-size: 0.92rem;
      color: var(--text-sub);
      margin-bottom: 14px;
    }

    .case-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: #0284c7;
      font-weight: 600;
    }

    /* 对比评测表格与卡片 */
    .eval-overview-card {
      background: linear-gradient(135deg, #ffffff, #f0fdf4);
      border: 2px solid rgba(16, 185, 129, 0.35);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-bottom: 30px;
      box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.15);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-score-block {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .score-circle {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
    }

    .score-num {
      font-size: 1.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-total {
      font-size: 0.72rem;
      opacity: 0.9;
    }

    .eval-rating-desc h4 {
      font-size: 1.3rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

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

    .table-container {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.92rem;
    }

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

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .compare-table td.brand-col {
      background: rgba(14, 165, 233, 0.03);
      font-weight: 600;
      color: #0284c7;
    }

    .tag-badge-green {
      display: inline-block;
      padding: 2px 8px;
      background: #dcfce7;
      color: #15803d;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 600;
    }

    /* 加盟代理与算力收益板块 */
    .agent-box {
      background: linear-gradient(135deg, #f0f9ff, #faf5ff);
      border: 1px solid rgba(139, 92, 246, 0.25);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-card);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .agent-info h3 {
      font-size: 1.8rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .agent-info p {
      font-size: 0.95rem;
      color: var(--text-sub);
      margin-bottom: 20px;
    }

    .agent-perks {
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .agent-perks li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .agent-perks li span {
      color: var(--neon-cyan);
    }

    /* 客户真实评价 6条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.25s;
    }

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

    .review-text {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-violet));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
    }

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

    .author-role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

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

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.2s;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: #0284c7;
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      color: var(--text-sub);
      font-size: 0.92rem;
      line-height: 1.65;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 20px;
    }

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-card);
    }

    .contact-info-col h3 {
      font-size: 1.6rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .contact-info-col p {
      font-size: 0.95rem;
      color: var(--text-sub);
      margin-bottom: 24px;
    }

    .contact-meta-list {
      list-style: none;
      display: grid;
      gap: 14px;
      margin-bottom: 30px;
    }

    .contact-meta-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .meta-lbl {
      color: var(--text-muted);
      width: 80px;
      font-weight: 500;
    }

    .qr-showcase {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      width: fit-content;
    }

    .qr-showcase img {
      width: 88px;
      height: 88px;
      border-radius: 6px;
      display: block;
    }

    .qr-desc strong {
      display: block;
      color: var(--text-main);
      font-size: 0.9rem;
    }

    .qr-desc span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 表单组件 */
    .form-group {
      margin-bottom: 18px;
    }

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

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #ffffff;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-control:focus {
      outline: none;
      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;
    }

    /* 行业资讯与文章动态 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 24px;
    }

    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
    }

    .article-item:hover {
      border-color: var(--neon-cyan);
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    .article-item a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      display: block;
      margin-bottom: 8px;
      line-height: 1.45;
    }

    .article-item a:hover {
      color: #0284c7;
    }

    .article-date {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 友情链接与生态 */
    .links-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

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

    .links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .links-row a {
      font-size: 0.85rem;
      color: var(--text-sub);
    }

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

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-light);
      padding: 40px 0 30px;
      color: var(--text-sub);
      font-size: 0.88rem;
      margin-top: 40px;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
    }

    .footer-copy {
      text-align: center;
      padding-top: 20px;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 悬浮客服面板 */
    .floating-service {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 100;
      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 14px rgba(15, 23, 42, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #0284c7;
      font-size: 1.1rem;
      transition: all 0.25s;
    }

    .float-btn:hover {
      background: var(--neon-cyan);
      color: #ffffff;
      transform: scale(1.08);
      box-shadow: 0 6px 18px rgba(6, 182, 212, 0.4);
    }

    /* 响应式断点控制 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .platform-intro-grid,
      .agent-box,
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .services-grid,
      .workflow-steps-wrap,
      .cases-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .services-grid,
      .workflow-steps-wrap,
      .cases-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .eval-overview-card {
        flex-direction: column;
        align-items: flex-start;
      }
      .contact-wrapper {
        padding: 24px 16px;
      }
      .intro-features-list {
        grid-template-columns: 1fr;
      }
    }