:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #0284c7;
      --accent-fresh: #0d9488;
      --accent-warm: #f97316;
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-regular: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --transition: all 0.25s ease;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-regular);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* 统一居中容器体系 */
    .site-container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }
    .brand-area .ai-page-home-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 4px 8px;
      border-radius: var(--radius-sm);
    }
    .brand-area .ai-page-home-link:hover {
      background: var(--bg-alt);
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      display: block;
      padding: 10px 14px;
      color: var(--text-regular);
      font-size: 0.95rem;
      font-weight: 500;
      white-space: nowrap;
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 600;
      padding: 9px 18px;
      border-radius: var(--radius-md);
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #ffffff;
      transform: translateY(-1px);
    }
    .btn-fresh {
      background: linear-gradient(135deg, #0284c7 0%, #0d9488 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
    }
    .btn-fresh:hover {
      color: #ffffff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(13, 148, 136, 0.35);
    }
    .btn-outline {
      background: var(--bg-surface);
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
    }
    .btn-sm {
      padding: 6px 12px;
      font-size: 0.85rem;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero 区域：严禁图片，采用鲜活高饱和度轻渐变与几何发光布局 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, rgba(248, 250, 252, 0) 60%),
                  radial-gradient(circle at 10% 80%, rgba(37, 99, 235, 0.1) 0%, rgba(248, 250, 252, 0) 50%),
                  var(--bg-page);
      padding: 70px 0 60px;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #e0f2fe;
      border: 1px solid #bae6fd;
      color: #0369a1;
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 24px;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-actions .btn-portal {
      font-size: 1.05rem;
      padding: 13px 32px;
      background: linear-gradient(135deg, #2563eb 0%, #0284c7 100%);
      color: #ffffff;
      box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
    }
    .hero-actions .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(37, 99, 235, 0.4);
    }

    /* 首屏纯 CSS 质感数据块 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }
    .metric-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 12px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-3px);
      border-color: #93c5fd;
      box-shadow: var(--shadow-md);
    }
    .metric-value {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用 Section 样式 */
    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
      background-color: var(--bg-page);
    }
    .section-wrap.bg-white {
      background-color: var(--bg-surface);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台介绍与关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .about-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .about-card:hover {
      transform: translateY(-4px);
      border-color: #93c5fd;
      box-shadow: var(--shadow-lg);
    }
    .about-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .about-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .about-card p {
      font-size: 0.95rem;
      color: var(--text-regular);
      line-height: 1.6;
    }

    /* AIGC 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .service-card-top h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .service-card-top p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
    }
    .service-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      background: var(--bg-alt);
      color: var(--text-regular);
    }

    /* 一站式制作 + 素材图片展示 */
    .production-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
      margin-bottom: 40px;
    }
    .feature-text-block h3 {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .feature-text-block p {
      font-size: 1rem;
      color: var(--text-regular);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 24px;
    }
    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-regular);
    }
    .feature-list li span.dot {
      color: var(--accent-fresh);
      font-weight: 800;
    }
    .img-showcase-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      background: var(--bg-surface);
    }
    .img-showcase-box img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: var(--transition);
    }
    .img-showcase-box:hover img {
      transform: scale(1.02);
    }

    /* 模型矩阵与标签云 */
    .models-cloud-wrap {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 16px;
    }
    .model-tag {
      background: var(--bg-alt);
      color: var(--text-main);
      padding: 8px 16px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .model-tag:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: #93c5fd;
      transform: translateY(-2px);
    }

    /* 标准流程时间线 */
    .timeline-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline-step {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 14px;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }
    .timeline-step:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 案例中心展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .case-media {
      width: 100%;
      background: var(--bg-alt);
      overflow: hidden;
    }
    .case-media img.ai-page-image {
      width: 100%;
      height: 260px;
      object-fit: cover;
      display: block;
    }
    .case-info {
      padding: 24px;
    }
    .case-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent-fresh);
      margin-bottom: 6px;
      display: inline-block;
    }
    .case-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .case-desc {
      font-size: 0.95rem;
      color: var(--text-regular);
      line-height: 1.6;
    }

    /* 对比评测：五星推荐，评分9.9，满分10 */
    .review-score-panel {
      background: linear-gradient(135deg, #1e40af 0%, #0369a1 100%);
      border-radius: var(--radius-lg);
      padding: 32px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 30px;
      box-shadow: 0 10px 25px rgba(30, 64, 175, 0.25);
    }
    .score-left h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .score-left p {
      font-size: 1rem;
      opacity: 0.9;
      max-width: 600px;
    }
    .score-right {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.12);
      padding: 16px 24px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .big-score {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
      color: #38bdf8;
    }
    .score-meta {
      display: flex;
      flex-direction: column;
    }
    .star-rating {
      color: #facc15;
      font-size: 1.25rem;
      letter-spacing: 2px;
      margin-bottom: 2px;
    }
    .score-sub {
      font-size: 0.85rem;
      opacity: 0.85;
    }

    /* 对比表格 */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .eval-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
    }
    .eval-table th.col-highlight {
      background: #e0f2fe;
      color: var(--primary);
    }
    .eval-table td.col-highlight {
      background: #f0f9ff;
      font-weight: 600;
      color: #0369a1;
    }
    .eval-table tr:last-child td {
      border-bottom: none;
    }

    /* Token 比价板块 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .token-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      text-align: center;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .token-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #93c5fd;
    }
    .token-card.popular {
      border-color: var(--primary);
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.15);
    }
    .token-card.popular::before {
      content: "爆款首选";
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: var(--radius-full);
    }
    .token-model-name {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .price-compare {
      margin: 20px 0;
      display: flex;
      justify-content: center;
      align-items: baseline;
      gap: 12px;
    }
    .current-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
    }
    .official-price {
      font-size: 0.95rem;
      color: var(--text-muted);
      text-decoration: line-through;
    }
    .token-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.5;
    }

    /* 加盟代理板块 */
    .agent-panel {
      background: linear-gradient(135deg, #f0fdf4 0%, #ecfeff 100%);
      border: 1px solid #bbf7d0;
      border-radius: var(--radius-lg);
      padding: 40px;
    }
    .agent-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: #14532d;
      margin-bottom: 14px;
    }
    .agent-content p {
      font-size: 1rem;
      color: #166534;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .agent-perks {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 28px;
    }
    .agent-perks li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      color: #15803d;
    }
    .agent-cta-box {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid #dcfce7;
      text-align: center;
    }
    .agent-cta-box h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .agent-cta-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    /* 客户评价板块 (6条评价) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .review-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
      border-color: #93c5fd;
    }
    .review-quote {
      font-size: 0.95rem;
      color: var(--text-regular);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #e2e8f0;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .author-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-meta p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ 手风琴样式 (12条) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-header {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-header h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }
    .faq-body {
      padding: 0 22px 18px;
      font-size: 0.95rem;
      color: var(--text-regular);
      line-height: 1.6;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }

    /* 需求匹配表单与联系方式 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }
    .contact-info-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-card h3 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .contact-info-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }
    .info-item {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .info-label {
      font-weight: 700;
      min-width: 80px;
      color: var(--text-muted);
    }
    .qrcode-box {
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      text-align: center;
      background: var(--bg-alt);
      max-width: 220px;
    }
    .qrcode-box img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 8px;
      border-radius: var(--radius-sm);
      object-fit: cover;
    }
    .qrcode-box span {
      font-size: 0.85rem;
      color: var(--text-regular);
      font-weight: 600;
    }

    /* 表单组件 */
    .form-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .form-card h3 {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .form-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 11px 14px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      outline: none;
      transition: var(--transition);
      background-color: var(--bg-surface);
      color: var(--text-main);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 最新文章与资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }
    .article-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
    }
    .article-item:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .article-item a {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: block;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .article-item a:hover {
      color: var(--primary);
    }
    .article-meta {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 友情链接与页脚 */
    .links-section {
      background: var(--bg-alt);
      padding: 28px 0;
      border-top: 1px solid var(--border-color);
    }
    .links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .links-wrap a {
      color: var(--text-regular);
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .links-wrap a:hover {
      color: var(--primary);
    }

    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 40px 0 30px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 30px;
    }
    .footer-brand h4 {
      color: #f8fafc;
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.6;
      max-width: 440px;
    }
    .footer-col h5 {
      color: #f8fafc;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-col ul li a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 悬浮客服挂件 */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }
    .float-qr-pop {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 12px;
      box-shadow: var(--shadow-lg);
      text-align: center;
      width: 150px;
    }
    .float-btn:hover .float-qr-pop {
      display: block;
    }
    .float-qr-pop img {
      width: 120px;
      height: 120px;
      display: block;
      margin: 0 auto 6px;
      border-radius: 4px;
    }
    .float-qr-pop span {
      font-size: 0.75rem;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .token-grid {
        grid-template-columns: 1fr;
      }
      .agent-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg-surface);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .production-features {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .float-service {
        right: 12px;
        bottom: 20px;
      }
    }