/* 基础复位与炫彩荧光浅色主题 */
    :root {
      --primary-color: #0d9488;
      --primary-glow: #14b8a6;
      --neon-cyan: #06b6d4;
      --neon-lime: #84cc16;
      --neon-purple: #8b5cf6;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --gradient-fluorescent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
      --gradient-light-card: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
      --shadow-neon: 0 10px 30px -10px rgba(6, 182, 212, 0.25);
      --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --container-max-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      line-height: 1.6;
      background: #f8fafc;
      overflow-x: hidden;
    }

    /* 贯穿全页的标准统一容器 */
    .container {
      width: 100%;
      max-width: var(--container-max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1deg solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--gradient-fluorescent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* .nav-links gap严格设置为0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-size: 0.92rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: 6px;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background: rgba(6, 182, 212, 0.08);
    }

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

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: var(--gradient-fluorescent);
      color: #ffffff;
      font-weight: 600;
      border-radius: 30px;
      text-decoration: none;
      box-shadow: var(--shadow-neon);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 35px -5px rgba(6, 182, 212, 0.4);
    }

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

    /* 模块通用样式 */
    section.page-section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(6, 182, 212, 0.1);
      color: var(--neon-cyan);
      font-weight: 700;
      font-size: 0.85rem;
      letter-spacing: 1px;
      margin-bottom: 12px;
      border: 1px solid rgba(6, 182, 212, 0.2);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 15px;
      letter-spacing: -0.5px;
    }

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

    /* 首屏 HERO 区域 - 严格无任何图片 */
    #hero {
      padding: 100px 0 80px 0;
      background: radial-gradient(circle at 50% 20%, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.04) 50%, rgba(248, 250, 252, 0) 100%);
      border-bottom: 1px solid var(--border-color);
      text-align: center;
    }

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

    .hero-badge-wrap {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      font-size: 0.85rem;
      color: #334155;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }

    .hero-badge span {
      color: var(--neon-cyan);
      font-weight: 700;
      margin-right: 5px;
    }

    /* 改写后的 H1 - 20字以内 */
    h1.hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    h1.hero-title span {
      background: var(--gradient-fluorescent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      background: #ffffff;
      color: var(--text-main);
      font-weight: 600;
      border-radius: 30px;
      text-decoration: none;
      border: 1px solid #cbd5e1;
      transition: all 0.2s ease;
    }

    .btn-secondary:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
    }

    /* 首屏数据指标卡片 - 纯样式布局无图片 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px 16px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease;
    }

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

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      background: var(--gradient-fluorescent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-card-box {
      background: #ffffff;
      border-radius: 20px;
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
    }

    .about-card-box h3 {
      font-size: 1.6rem;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-card-box p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
    }

    .feature-check-list {
      list-style: none;
    }

    .feature-check-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
      font-weight: 500;
    }

    .feature-check-list li::before {
      content: "✓";
      display: inline-block;
      width: 20px;
      height: 20px;
      background: rgba(6, 182, 212, 0.15);
      color: var(--neon-cyan);
      border-radius: 50%;
      text-align: center;
      line-height: 20px;
      font-size: 12px;
      font-weight: 900;
    }

    /* AIGC 服务矩阵卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

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

    .service-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
      color: var(--neon-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .service-card h4 {
      font-size: 1.25rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 一站式制作场景网格 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 20px;
      transition: all 0.25s ease;
    }

    .scenario-item:hover {
      border-color: var(--neon-lime);
      box-shadow: 0 6px 20px rgba(132, 204, 22, 0.15);
    }

    .scenario-item h5 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .scenario-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 包含真实素材图的展示区 */
    .media-showcase-box {
      margin-top: 40px;
      background: #ffffff;
      border-radius: 20px;
      padding: 30px;
      border: 1px solid var(--border-color);
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: center;
    }

    .media-img-wrap {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    }

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

    .step-node {
      background: #ffffff;
      border-radius: 16px;
      padding: 24px;
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(6, 182, 212, 0.25);
      position: absolute;
      top: 15px;
      right: 20px;
    }

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

    .step-node p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

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

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .case-body {
      padding: 20px;
    }

    .case-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: rgba(139, 92, 246, 0.1);
      color: var(--neon-purple);
      border-radius: 4px;
      font-weight: 600;
    }

    .case-body h4 {
      font-size: 1.1rem;
      margin: 10px 0 8px 0;
    }

    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格板块 */
    .comparison-wrapper {
      background: #ffffff;
      border-radius: 20px;
      border: 1px solid var(--border-color);
      padding: 36px;
      box-shadow: var(--shadow-card);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
      padding: 20px 30px;
      border-radius: 14px;
      margin-bottom: 30px;
    }

    .rating-score {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .rating-score .num {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--neon-cyan);
    }

    .rating-stars {
      color: #f59e0b;
      font-size: 1.4rem;
    }

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

    table.comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

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

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

    .highlight-col {
      background: rgba(6, 182, 212, 0.03);
      font-weight: 600;
      color: var(--primary-color);
    }

    /* Token 比价表 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      text-align: center;
    }

    .token-card.popular {
      border: 2px solid var(--neon-cyan);
      box-shadow: var(--shadow-neon);
      position: relative;
    }

    .popular-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--neon-cyan);
      color: #ffffff;
      font-size: 0.75rem;
      padding: 2px 10px;
      border-radius: 10px;
      font-weight: bold;
    }

    .token-price {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 15px 0;
    }

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

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-card);
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--gradient-fluorescent);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .user-info h5 {
      font-size: 1rem;
      color: var(--text-main);
    }

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

    .review-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* FAQ 折叠面板 */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-answer {
      padding: 0 24px 18px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      display: none;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

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

    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
    }

    /* AI百科 & 行业资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .article-link-card {
      background: #ffffff;
      padding: 20px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      text-decoration: none;
      color: var(--text-main);
      transition: border-color 0.2s ease;
    }

    .article-link-card:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }

    /* 表单与联系我们 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: 20px;
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
    }

    .contact-info-side h3 {
      font-size: 1.5rem;
      margin-bottom: 16px;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      color: var(--text-muted);
    }

    .qr-box {
      margin-top: 20px;
      text-align: center;
      display: inline-block;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      border-radius: 10px;
      border: 1px solid var(--border-color);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--neon-cyan);
    }

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

    /* 友情链接与系统 Footer */
    footer.site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 18px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-wrap a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
    }

    /* 悬浮工具栏与 Modal */
    .float-service {
      position: fixed;
      right: 25px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--gradient-fluorescent);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
      cursor: pointer;
      text-decoration: none;
      border: none;
      font-size: 1.2rem;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-stats-grid, .services-grid, .scenarios-grid, .steps-timeline, .cases-grid, .token-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .media-showcase-box, .contact-wrapper, .footer-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
    }

    @media (max-width: 576px) {
      h1.hero-title {
        font-size: 2rem;
      }
      .hero-stats-grid, .services-grid, .scenarios-grid, .steps-timeline, .cases-grid, .token-grid, .reviews-grid, .articles-grid {
        grid-template-columns: 1fr;
      }
      section.page-section {
        padding: 50px 0;
      }
    }