:root {
      --primary: #4f46e5;
      --primary-dark: #3730a3;
      --accent-pink: #ec4899;
      --accent-amber: #f59e0b;
      --accent-cyan: #06b6d4;
      --accent-lime: #84cc16;
      --bg-light: #f8fafc;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --border-color: #e2e8f0;
      --container-max: 1200px;
      --radius: 12px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
      --shadow-lg: 0 20px 25px -5px rgba(79, 70, 229, 0.12), 0 8px 10px -6px rgba(236, 72, 153, 0.08);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 100%);
      color: var(--text-main);
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--border-color);
    }

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

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

    .logo-container {
      height: 44px;
      display: flex;
      align-items: center;
    }

    .logo-container img.ai-page-logo {
      height: 100%;
      width: auto;
      object-fit: contain;
    }

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

    .nav-links a {
      padding: 8px 12px;
      font-weight: 600;
      font-size: 15px;
      color: var(--text-main);
      border-radius: 6px;
    }

    .nav-links a:hover {
      color: var(--primary);
      background-color: #eef2ff;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 700;
      border-radius: 8px;
      cursor: pointer;
      border: 2px solid transparent;
      transition: var(--transition);
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
      color: #ffffff;
    }

    .btn-contrast {
      background: linear-gradient(135deg, var(--accent-pink) 0%, #f43f5e 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
    }

    .btn-contrast:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(236, 72, 153, 0.4);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: #eef2ff;
      color: var(--primary-dark);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
      padding: 8px;
    }

    /* 模块通用样式 */
    section {
      padding: 64px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background: #fdf2f8;
      color: var(--accent-pink);
      border: 1px solid #fbcfe8;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }

    /* Hero 首屏 - 严禁图片，纯CSS与高对比撞色 */
    .hero-section {
      background: radial-gradient(circle at top right, #fee2e2 0%, #e0e7ff 50%, #f8fafc 100%);
      padding: 72px 0 64px;
      text-align: center;
      border-bottom: 3px solid var(--primary);
    }

    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #1e1b4b;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-btn-official {
      background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
      color: #ffffff;
      font-size: 18px;
      padding: 14px 36px;
      border-radius: 12px;
      box-shadow: 0 10px 20px rgba(236, 72, 153, 0.35);
      border: none;
      font-weight: 800;
      letter-spacing: 0.5px;
    }

    .hero-btn-official:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 26px rgba(236, 72, 153, 0.45);
      color: #ffffff;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius);
      border: 2px solid #e0e7ff;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .stat-num {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 平台矩阵标签条 */
    .model-strip {
      background: #111827;
      color: #ffffff;
      padding: 24px 0;
      overflow: hidden;
    }

    .model-strip-title {
      text-align: center;
      font-size: 14px;
      color: #9ca3af;
      margin-bottom: 16px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-tag {
      background: #1f2937;
      color: #f3f4f6;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      border: 1px solid #374151;
      transition: var(--transition);
    }

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

    /* 服务与制作场景网格 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--card-bg);
      padding: 28px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .service-badge {
      display: inline-block;
      align-self: flex-start;
      padding: 4px 10px;
      font-size: 12px;
      font-weight: 700;
      border-radius: 6px;
      margin-bottom: 16px;
      background: #eef2ff;
      color: var(--primary);
    }

    .service-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 行业方案与图文 */
    .feature-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 48px;
    }

    .feature-row:last-child {
      margin-bottom: 0;
    }

    .feature-content h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .feature-content p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .feature-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .feature-list li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 10px;
      font-size: 14px;
      color: var(--text-main);
      font-weight: 600;
    }

    .feature-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: #10b981;
      font-weight: 900;
    }

    .feature-img-box {
      border-radius: var(--radius);
      overflow: hidden;
      border: 2px solid var(--border-color);
      box-shadow: var(--shadow-md);
      background: #ffffff;
    }

    .feature-img-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .feature-img-box:hover img {
      transform: scale(1.03);
    }

    /* 标准流程时间线 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-item {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border-top: 4px solid var(--accent-pink);
      border-left: 1px solid var(--border-color);
      border-right: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .flow-step {
      font-size: 24px;
      font-weight: 900;
      color: var(--accent-pink);
      margin-bottom: 8px;
    }

    .flow-title {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .flow-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 对比评测板块 */
    .eval-card-main {
      background: #ffffff;
      border-radius: var(--radius);
      border: 2px solid #cbd5e1;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .eval-header-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      padding: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.1);
      padding: 12px 24px;
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .eval-stars {
      color: #facc15;
      font-size: 20px;
      letter-spacing: 2px;
    }

    .eval-score-val {
      font-size: 32px;
      font-weight: 900;
      color: #ffffff;
    }

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

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .eval-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 800;
    }

    .eval-table tr:hover td {
      background: #fdf4ff;
    }

    .eval-highlight {
      font-weight: 800;
      color: var(--primary);
    }

    /* Token 比价与代理加盟 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 28px;
      border: 2px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .token-card.popular {
      border-color: var(--accent-pink);
      box-shadow: var(--shadow-lg);
    }

    .token-card-tag {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent-pink);
      color: #ffffff;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 700;
    }

    .token-price {
      font-size: 36px;
      font-weight: 900;
      color: var(--text-main);
      margin: 16px 0;
    }

    .token-features {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .token-features li {
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      font-size: 14px;
      color: var(--text-muted);
    }

    /* FAQ 折叠区 */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

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

    .faq-item:hover {
      border-color: #cbd5e1;
    }

    .faq-question {
      padding: 18px 20px;
      font-weight: 700;
      font-size: 15px;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      padding: 0 20px 18px;
      max-height: 200px;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-pink);
    }

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

    .review-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

    .review-avatar-text {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-pink) 100%);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }

    .review-name {
      font-weight: 800;
      font-size: 15px;
      color: var(--text-main);
    }

    .review-role {
      font-size: 13px;
      color: var(--text-sub);
    }

    .review-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 需求匹配与表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .contact-info h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .contact-info p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .contact-details {
      list-style: none;
      margin-bottom: 24px;
    }

    .contact-details li {
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .qr-container {
      width: 140px;
      border: 2px dashed #cbd5e1;
      padding: 8px;
      border-radius: 8px;
      background: #f8fafc;
    }

    .qr-container img {
      width: 100%;
      height: auto;
      display: block;
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 14px;
      color: var(--text-main);
      background: #f8fafc;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    /* 资讯与文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .article-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .article-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .article-link {
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      margin-top: auto;
    }

    /* 页脚设计 */
    footer.site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 24px;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
      font-size: 14px;
    }

    .footer-links a {
      color: #94a3b8;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-box a {
      display: inline-block;
      background: #1e293b;
      color: #cbd5e1;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 13px;
    }

    .friend-links-box a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .footer-bottom {
      text-align: center;
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      font-size: 13px;
      color: #64748b;
    }

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

    .floating-item {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      transition: var(--transition);
      color: var(--primary);
      font-weight: 800;
      font-size: 14px;
    }

    .floating-item:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.1);
    }

    /* 响应式样式适配 */
    @media (max-width: 992px) {
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid, .token-grid, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-row {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-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: 16px 24px;
        box-shadow: var(--shadow-md);
        border-bottom: 2px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 10px 0;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .service-grid, .token-grid, .reviews-grid, .articles-grid, .faq-grid, .flow-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }