:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
      --accent-rainbow: linear-gradient(90deg, #ec4899, #8b5cf6, #3b82f6, #10b981, #f59e0b);
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-card-subtle: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #c7d2fe;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --shadow-rainbow: 0 12px 28px -5px rgba(99, 102, 241, 0.2);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --max-width: 1240px;
      --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-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(99, 102, 241, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 30%, rgba(236, 72, 153, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
      background-attachment: fixed;
    }

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

    ul, ol {
      list-style: none;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* 统一主容器 */
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .nav-brand .ai-page-logo {
      height: 42px;
      width: auto;
    }

    .nav-brand .brand-title {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格要求设置为0 */
    }

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
      background-color: rgba(79, 70, 229, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    }

    .btn-primary:hover {
      opacity: 0.92;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(79, 70, 229, 0.04);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 区域通用标题 */
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .badge-pill {
      display: inline-block;
      padding: 4px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      background: linear-gradient(90deg, rgba(79, 70, 229, 0.1), rgba(236, 72, 153, 0.1));
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }

    .section-header h2 {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-header p {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-padding {
      padding-top: 80px;
      padding-bottom: 80px;
    }

    .section-subtle {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    /* Hero 首屏（严禁包含图片） */
    .hero-section {
      padding: 90px 0 70px 0;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.08) 0%, rgba(248, 250, 252, 0) 70%);
    }

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

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.25);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-tagline .dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10b981;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title .rainbow-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.18rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.8;
    }

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

    .hero-btn-main {
      padding: 14px 34px;
      font-size: 1.05rem;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .hero-stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--accent-rainbow);
      opacity: 0.8;
    }

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

    .hero-stat-number {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

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

    /* 平台介绍 & 核心卖点 */
    .about-feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-box:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-focus);
    }

    .feature-icon-badge {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
    }

    .feature-box:nth-child(2) .feature-icon-badge {
      background: rgba(236, 72, 153, 0.08);
      color: #ec4899;
    }

    .feature-box:nth-child(3) .feature-icon-badge {
      background: rgba(16, 185, 129, 0.08);
      color: #10b981;
    }

    .feature-box:nth-child(4) .feature-icon-badge {
      background: rgba(245, 158, 11, 0.08);
      color: #f59e0b;
    }

    .feature-box:nth-child(5) .feature-icon-badge {
      background: rgba(6, 182, 212, 0.08);
      color: #06b6d4;
    }

    .feature-box:nth-child(6) .feature-icon-badge {
      background: rgba(139, 92, 246, 0.08);
      color: #8b5cf6;
    }

    .feature-box h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .feature-box p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 多模型聚合标签墙 */
    .model-tag-wall {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-top: 40px;
      box-shadow: var(--shadow-sm);
    }

    .model-tag-wall h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
      text-align: center;
    }

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

    .model-pill {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-pill:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* AIGC 服务与场景应用矩阵 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

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

    .service-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-rainbow);
      transform: translateY(-3px);
    }

    .service-card-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .service-card-icon {
      font-size: 1.4rem;
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 行业解决方案与网络 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .industry-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      transition: var(--transition);
    }

    .industry-card:hover {
      border-color: #ec4899;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .industry-icon {
      font-size: 2rem;
      margin-bottom: 12px;
    }

    .industry-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

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

    .process-step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      font-size: 0.9rem;
      border-radius: 50%;
      margin-bottom: 14px;
    }

    .process-step-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* 案例中心展示（使用指定图片资源） */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #f1f5f9;
      position: relative;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .case-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-tag {
      display: inline-block;
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      padding: 3px 10px;
      border-radius: var(--radius-full);
      margin-bottom: 10px;
    }

    .case-content h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测板块 */
    .review-score-hero {
      background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
      border: 2px solid #e0e7ff;
      border-radius: var(--radius-lg);
      padding: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-rainbow);
    }

    .score-badge-group {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-number {
      font-size: 3.8rem;
      font-weight: 900;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .score-meta h3 {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .star-rating {
      color: #f59e0b;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .score-desc {
      max-width: 500px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

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

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

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

    .highlight-col {
      background: rgba(79, 70, 229, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* Token 比价板块 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .token-card.popular {
      border-color: var(--primary);
      box-shadow: var(--shadow-rainbow);
      position: relative;
    }

    .popular-tag {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 2px 14px;
      border-radius: var(--radius-full);
      font-size: 0.75rem;
      font-weight: 700;
    }

    .token-title {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .token-price {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 16px;
    }

    .token-price span {
      font-size: 0.9rem;
      font-weight: 400;
      color: var(--text-light);
    }

    .token-list {
      text-align: left;
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .token-list li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .token-list li::before {
      content: "✓";
      color: #10b981;
      font-weight: 800;
    }

    /* 加盟代理与被动收入板块 */
    .agency-box {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .agency-box h2 {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
      color: #ffffff;
    }

    .agency-box p {
      font-size: 1.05rem;
      color: #cbd5e1;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .agency-perks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .agency-perk-item {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 16px;
    }

    .agency-perk-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 6px;
    }

    .agency-perk-item p {
      font-size: 0.85rem;
      color: #94a3b8;
      margin: 0;
    }

    /* 需求匹配与表单板块 */
    .form-container-wrap {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .form-info-side h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .form-info-side p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .contact-item-group {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-item strong {
      color: var(--primary);
    }

    .demand-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #f8fafc;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

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

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

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

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .avatar-badge {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

    .reviewer-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴面板（不少于10条） */
    .faq-accordion-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

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

    .faq-item:hover {
      border-color: var(--border-focus);
    }

    .faq-header {
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      font-size: 1.1rem;
      transition: transform 0.25s ease;
      color: var(--primary);
    }

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

    .faq-body {
      padding: 0 20px 18px 20px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
    }

    .faq-item.open .faq-body {
      display: block;
    }

    /* AI百科 & 帮助中心 */
    .wiki-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .wiki-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .wiki-card h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .wiki-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 行业资讯 / 最新文章列表 */
    .articles-block {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      margin-top: 30px;
    }

    .articles-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .article-link-chip {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      color: var(--text-main);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-link-chip:hover {
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border-color: var(--primary-light);
    }

    /* 微信客服与联系信息卡 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .qr-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .qr-container img {
      width: 150px;
      height: 150px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }

    /* 底部通用栏目 */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px 0;
      color: var(--text-main);
    }

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

    .footer-brand h3 {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 12px;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .footer-brand p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li a {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .footer-col ul li a:hover {
      color: var(--primary);
    }

    .friend-links-area {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-list a {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .friend-links-list a:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 悬浮工具栏 */
    .floating-tools {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .tool-btn {
      width: 46px;
      height: 46px;
      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;
      color: var(--primary);
      font-size: 1.1rem;
      transition: var(--transition);
    }

    .tool-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.3rem;
      }
      .about-feature-grid,
      .service-grid,
      .reviews-grid,
      .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid,
      .industry-grid,
      .process-timeline,
      .wiki-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-container-wrap,
      .contact-card-grid,
      .agency-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 0;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 12px 16px;
      }
      .nav-actions .btn-outline {
        display: none;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .section-header h2 {
        font-size: 1.7rem;
      }
      .hero-stats-grid,
      .about-feature-grid,
      .service-grid,
      .industry-grid,
      .process-timeline,
      .case-gallery-grid,
      .token-grid,
      .reviews-grid,
      .faq-accordion-grid,
      .wiki-grid,
      .footer-top {
        grid-template-columns: 1fr;
      }
      .review-score-hero {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .score-badge-group {
        flex-direction: column;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }