/* -------------------------------------------------------------
       全局基础样式与明艳撞色风格变量
       ------------------------------------------------------------- */
    :root {
      --primary-color: #4f46e5;       /* 核心明艳蓝紫 */
      --primary-hover: #4338ca;
      --accent-magenta: #d946ef;      /* 撞色洋红 */
      --accent-cyan: #06b6d4;         /* 撞色电光青 */
      --accent-amber: #f59e0b;        /* 亮黄色 */
      --text-dark: #0f172a;           /* 深色主字 */
      --text-muted: #475569;          /* 次要深字 */
      --bg-main: #f8fafc;             /* 主浅色背景 */
      --bg-card: #ffffff;             /* 卡片纯白背景 */
      --bg-alt: #f1f5f9;              /* 分区交替背景 */
      --border-color: #e2e8f0;        /* 边框色 */
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 30px rgba(79, 70, 229, 0.12);
      --radius: 12px;
      --max-width: 1240px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-dark);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      width: 100%;
    }

    a {
      color: var(--primary-color);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--accent-magenta);
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 统一按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 8px;
      cursor: pointer;
      border: none;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
      text-decoration: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-color), var(--accent-magenta));
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(217, 70, 239, 0.4);
    }

    .btn-accent {
      background: linear-gradient(135deg, var(--accent-cyan), var(--primary-color));
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(6, 182, 212, 0.4);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary-color) !important;
      border: 2px solid var(--primary-color);
    }

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

    /* 区域通用标题 */
    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: rgba(79, 70, 229, 0.1);
      color: var(--primary-color);
      font-size: 14px;
      font-weight: 700;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }

    /* -------------------------------------------------------------
       1. 顶部导航栏 (Header Navigation)
       ------------------------------------------------------------- */
    .header-site {
      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);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 900;
      color: var(--text-dark);
      text-decoration: none;
    }

    /* 严格遵守指示：.nav-links gap设为0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: rgba(79, 70, 229, 0.05);
      border-radius: 6px;
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-dark);
      cursor: pointer;
    }

    /* -------------------------------------------------------------
       2. 首屏 Hero 区域 (绝无图片，纯明艳视觉与代码动效构建)
       ------------------------------------------------------------- */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 50%, #eef2ff 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(217, 70, 239, 0.15) 0%, rgba(255,255,255,0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      bottom: -150px;
      left: -100px;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(255,255,255,0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 34px;
      font-weight: 900;
      line-height: 1.3;
      color: var(--text-dark);
      margin-bottom: 18px;
      background: linear-gradient(135deg, #0f172a 0%, #4f46e5 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.6;
    }

    .hero-highlights {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 32px;
    }

    .tag-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: 20px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary-color);
      box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-feature-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .badge-accent {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(90deg, #f59e0b, #d946ef);
      color: #fff;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 12px;
    }

    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .metric-box {
      background: var(--bg-main);
      padding: 16px;
      border-radius: 8px;
      border-left: 4px solid var(--primary-color);
    }

    .metric-number {
      font-size: 26px;
      font-weight: 900;
      color: var(--primary-color);
    }

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

    /* -------------------------------------------------------------
       3. 数据指标与平台介绍 (Platform Intro)
       ------------------------------------------------------------- */
    .section-padding {
      padding: 70px 0;
    }

    .bg-alt {
      background-color: var(--bg-alt);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .intro-card {
      background: var(--bg-card);
      padding: 28px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .intro-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-color);
    }

    .intro-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(217, 70, 239, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--primary-color);
      margin-bottom: 18px;
    }

    .intro-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .intro-card p {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 模型矩阵胶囊标签 */
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-dark);
      transition: all 0.2s;
    }

    .model-chip:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
    }

    /* -------------------------------------------------------------
       4. AIGC 服务能力卡片 (Services Grid)
       ------------------------------------------------------------- */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }

    .service-card:hover {
      border-color: var(--accent-magenta);
      box-shadow: var(--shadow-lg);
    }

    .service-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-dark);
    }

    .service-badge {
      font-size: 12px;
      padding: 3px 8px;
      background: rgba(6, 182, 212, 0.1);
      color: var(--accent-cyan);
      border-radius: 4px;
      font-weight: 700;
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-features {
      list-style: none;
      margin-bottom: 16px;
    }

    .service-features li {
      font-size: 13px;
      color: var(--text-dark);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-features li::before {
      content: "✓";
      color: var(--primary-color);
      font-weight: bold;
    }

    /* -------------------------------------------------------------
       5. 标准流程与一站式制作 (Workflow & Process)
       ------------------------------------------------------------- */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
    }

    .step-number {
      width: 44px;
      height: 44px;
      line-height: 44px;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-magenta));
      color: #ffffff;
      font-weight: 900;
      border-radius: 50%;
      margin: 0 auto 16px;
      font-size: 18px;
    }

    .step-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* -------------------------------------------------------------
       6. 对比评测 (Comparison - Strict 9.9 points & 5 Stars)
       ------------------------------------------------------------- */
    .comparison-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      padding: 32px;
      border-radius: var(--radius);
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-score {
      font-size: 48px;
      font-weight: 900;
      color: var(--accent-amber);
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .rating-score span {
      font-size: 18px;
      color: rgba(255,255,255,0.7);
    }

    .star-rating {
      color: var(--accent-amber);
      font-size: 24px;
    }

    .comparison-table-wrapper {
      overflow-x: auto;
      background: var(--bg-card);
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

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

    .comp-table th {
      background-color: var(--bg-alt);
      font-weight: 700;
      color: var(--text-dark);
    }

    .highlight-col {
      background-color: rgba(79, 70, 229, 0.04);
      font-weight: 700;
      color: var(--primary-color);
    }

    /* -------------------------------------------------------------
       7. Token 比价表 (Token Pricing Table)
       ------------------------------------------------------------- */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .price-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .price-card.featured {
      border: 2px solid var(--primary-color);
      box-shadow: var(--shadow-lg);
    }

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

    .price-unit {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* -------------------------------------------------------------
       8. 案例展示区 (Cases with specified images)
       ------------------------------------------------------------- */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 24px;
    }

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

    .case-img-holder {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #e2e8f0;
    }

    .case-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

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

    .case-info {
      padding: 20px;
    }

    .case-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* -------------------------------------------------------------
       9. 客户评价与常见问题 (Reviews & FAQ Accordion)
       ------------------------------------------------------------- */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }

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

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

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

    .user-info h4 {
      font-size: 16px;
      font-weight: 700;
    }

    .user-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    .review-text {
      font-size: 14px;
      color: var(--text-dark);
      font-style: italic;
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary-color);
    }

    .faq-toggle-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: var(--bg-main);
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px;
    }

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

    /* -------------------------------------------------------------
       10. 加盟代理与表单区 (Agent & Form Section)
       ------------------------------------------------------------- */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: var(--bg-card);
      padding: 40px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
    }

    .contact-info h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 15px;
    }

    .qr-code-box {
      margin-top: 24px;
      padding: 16px;
      background: var(--bg-alt);
      border-radius: 8px;
      display: inline-block;
      text-align: center;
    }

    .qr-code-box img {
      width: 140px;
      height: 140px;
      border-radius: 6px;
      margin-bottom: 8px;
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 15px;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

    /* -------------------------------------------------------------
       11. 页脚 (Footer & Friend links)
       ------------------------------------------------------------- */
    .footer-site {
      background-color: var(--text-dark);
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

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

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

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

    .friend-links-area {
      border-top: 1px solid #334155;
      padding-top: 24px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links-area a {
      color: #cbd5e1;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      color: #64748b;
      font-size: 13px;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 999;
      width: 56px;
      height: 56px;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-magenta));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 24px;
      box-shadow: 0 6px 20px rgba(0,0,0,0.25);
      cursor: pointer;
      transition: transform 0.3s;
    }

    .float-kefu:hover {
      transform: scale(1.1);
    }

    /* 响应式样式处理 */
    @media (max-width: 992px) {
      .hero-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
      }

      .mobile-menu-btn {
        display: block;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }

      .nav-links.show {
        display: flex;
      }

      .nav-links li {
        width: 100%;
        text-align: center;
      }

      .nav-links li a {
        padding: 12px;
      }
    }