:root {
      --primary: #10b981;
      --primary-hover: #059669;
      --primary-active: #047857;
      --primary-light: #ecfdf5;
      --primary-border: #a7f3d0;
      --accent-neon: #00dc82;
      --text-main: #0f172a;
      --text-secondary: #334155;
      --text-muted: #64748b;
      --bg-body: #f8faf9;
      --bg-card: #ffffff;
      --bg-card-soft: #f0fdf4;
      --border-color: #e2e8f0;
      --border-focus: #10b981;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 14px rgba(16, 185, 129, 0.08);
      --shadow-hover: 0 12px 28px rgba(16, 185, 129, 0.16);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-xl: 24px;
      --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 12% 18%, rgba(16, 185, 129, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 88% 75%, rgba(0, 220, 130, 0.04) 0%, transparent 45%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(16, 185, 129, 0.15);
      transition: var(--transition-fast);
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-slogan {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-tagline {
      font-size: 0.75rem;
      color: var(--primary-hover);
      font-weight: 600;
    }

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

    .nav-item a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
    }

    .nav-item a:hover,
    .nav-item a.active {
      color: var(--primary-hover);
      background: rgba(16, 185, 129, 0.08);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.92rem;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition-fast);
      text-align: center;
      white-space: nowrap;
    }

    .btn-portal {
      background: linear-gradient(135deg, #10b981 0%, #059669 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    }

    .btn-portal:hover {
      background: linear-gradient(135deg, #059669 0%, #047857 100%);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
    }

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

    .btn-outline-green:hover {
      background: var(--primary-light);
      border-color: var(--primary-hover);
    }

    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      justify-content: space-between;
      width: 26px;
      height: 20px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0;
    }

    .mobile-menu-btn span {
      display: block;
      height: 2.5px;
      width: 100%;
      background: var(--text-main);
      border-radius: 2px;
      transition: var(--transition-fast);
    }

    /* 首屏 Hero 区域 - 严格无图纯CSS渲染 */
    .hero-section {
      padding: 60px 0 70px 0;
      position: relative;
      background: linear-gradient(180deg, rgba(236, 253, 245, 0.6) 0%, rgba(248, 250, 249, 1) 100%);
      border-bottom: 1px solid rgba(16, 185, 129, 0.12);
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid var(--primary-border);
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary-hover);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge .pulse-point {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
      animation: pulse-green 2s infinite;
    }

    @keyframes pulse-green {
      0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6);
      }
      70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
      }
      100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
      }
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      max-width: 900px;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-secondary);
      max-width: 800px;
      line-height: 1.7;
      margin-bottom: 36px;
    }

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

    .hero-actions .btn-portal {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 14px;
    }

    .hero-actions .btn-secondary-act {
      padding: 14px 28px;
      font-size: 1.05rem;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      font-weight: 600;
      box-shadow: var(--shadow-sm);
    }

    .hero-actions .btn-secondary-act:hover {
      border-color: var(--primary);
      color: var(--primary-hover);
      transform: translateY(-1px);
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      max-width: 1050px;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid rgba(16, 185, 129, 0.2);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-fast);
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #10b981, #00dc82);
    }

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

    .metric-number {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary-hover);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-secondary);
    }

    .metric-desc {
      font-size: 0.76rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 通用版块标题 */
    .section-spacing {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px auto;
    }

    .section-kicker {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.2px;
      color: var(--primary-hover);
      background: rgba(16, 185, 129, 0.1);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 平台介绍 & 标签云 */
    .platform-intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }

    .platform-features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .feature-item {
      padding: 24px;
      background: var(--bg-card-soft);
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-md);
      transition: var(--transition-fast);
    }

    .feature-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
      background: #ffffff;
    }

    .feature-item h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 10px;
      font-weight: 700;
    }

    .feature-item p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 模型矩阵胶囊群 */
    .model-tags-container {
      margin-top: 36px;
      background: #ffffff;
      border: 1px dashed var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 24px;
    }

    .model-tags-header {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .model-tags-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .model-tag {
      font-size: 0.82rem;
      font-weight: 600;
      padding: 5px 12px;
      background: #f1f5f9;
      color: var(--text-secondary);
      border-radius: 999px;
      border: 1px solid #e2e8f0;
      transition: var(--transition-fast);
    }

    .model-tag:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary-hover);
    }

    /* AIGC 服务场景矩阵 (17+核心场景) */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 26px 22px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-fast);
      display: flex;
      flex-direction: column;
      position: relative;
    }

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

    .service-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(0, 220, 130, 0.25) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-hover);
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.55;
      flex-grow: 1;
    }

    .service-badge {
      display: inline-block;
      align-self: flex-start;
      margin-top: 14px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--primary-hover);
      background: var(--primary-light);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 一站式创作特色能力 */
    .creation-showcase {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .showcase-block {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-fast);
    }

    .showcase-block:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .showcase-block h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .showcase-block p {
      font-size: 0.94rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 行业解决方案与服务网络 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

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

    .industry-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .industry-card p {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.55;
    }

    .network-bar {
      background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .network-info h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #ffffff;
    }

    .network-info p {
      font-size: 0.94rem;
      color: #a7f3d0;
      max-width: 600px;
    }

    .network-stats {
      display: flex;
      gap: 28px;
    }

    .n-stat {
      text-align: center;
    }

    .n-stat-num {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--accent-neon);
    }

    .n-stat-label {
      font-size: 0.78rem;
      color: #e2e8f0;
    }

    /* 标准流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      font-size: 1.3rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 8px;
      line-height: 1;
    }

    .step-card h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 0.82rem;
      color: var(--text-secondary);
      line-height: 1.45;
    }

    /* 案例中心 (合法引入指定图片) */
    .case-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

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

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

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

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-fast);
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

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

    .case-body h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.86rem;
      color: var(--text-secondary);
      line-height: 1.5;
      margin-bottom: 12px;
      flex-grow: 1;
    }

    .case-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .case-tags span {
      font-size: 0.74rem;
      padding: 2px 8px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 4px;
      color: var(--text-muted);
    }

    .banner-media-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .banner-media-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    /* 对比评测要求板块 */
    .evaluation-container {
      background: #ffffff;
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .score-summary-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 28px;
      margin-bottom: 28px;
      border-bottom: 1px solid var(--border-color);
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .score-badge {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--primary-hover);
      line-height: 1;
    }

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

    .score-meta h3 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .score-meta p {
      font-size: 0.88rem;
      color: var(--text-secondary);
    }

    .score-right {
      background: var(--primary-light);
      border: 1px solid var(--primary-border);
      padding: 12px 20px;
      border-radius: var(--radius-md);
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--primary-hover);
    }

    .comparison-table-wrapper {
      width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

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

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

    .comparison-table th.highlight-col,
    .comparison-table td.highlight-col {
      background: rgba(16, 185, 129, 0.04);
      font-weight: 600;
      color: var(--primary-hover);
    }

    /* Token比价与成本控制 */
    .pricing-table-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

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

    .price-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      transition: var(--transition-fast);
      background: #ffffff;
    }

    .price-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .price-item h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .price-official {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-decoration: line-through;
      margin-bottom: 4px;
    }

    .price-our {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary-hover);
      margin-bottom: 8px;
    }

    .price-desc {
      font-size: 0.78rem;
      color: var(--text-secondary);
    }

    /* 加盟代理板块 */
    .partner-banner {
      background: linear-gradient(135deg, #064e3b 0%, #059669 100%);
      border-radius: var(--radius-xl);
      padding: 40px;
      color: #ffffff;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .partner-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 10px;
    }

    .partner-card {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .partner-card h3 {
      font-size: 1.15rem;
      color: var(--accent-neon);
      margin-bottom: 10px;
      font-weight: 700;
    }

    .partner-card p {
      font-size: 0.88rem;
      color: #e2e8f0;
      line-height: 1.6;
    }

    /* 用户评论 (6条精选) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition-fast);
    }

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

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

    .review-avatar-text {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-hover);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .reviewer-info h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-info p {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .review-stars {
      color: #f59e0b;
      font-size: 0.88rem;
      margin-bottom: 10px;
    }

    .review-content {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 常见问题折叠面板 (>=10条) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

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

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      background: #ffffff;
    }

    .faq-question h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      padding-right: 16px;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--primary-hover);
      transition: transform 0.25s ease;
      flex-shrink: 0;
    }

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

    .faq-answer {
      display: none;
      padding: 0 22px 20px 22px;
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.65;
      border-top: 1px solid #f1f5f9;
      background: #fafdfb;
    }

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

    /* AI百科 & 帮助中心 */
    .wiki-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

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

    .wiki-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .wiki-card p {
      font-size: 0.84rem;
      color: var(--text-secondary);
      line-height: 1.5;
    }

    /* 行业资讯与最新文章 */
    .articles-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .articles-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-top: 20px;
    }

    .article-link-item {
      display: block;
      padding: 16px;
      border: 1px solid #f1f5f9;
      border-radius: var(--radius-md);
      background: #fafbfb;
      transition: var(--transition-fast);
    }

    .article-link-item:hover {
      background: var(--primary-light);
      border-color: var(--primary-border);
      transform: translateY(-2px);
    }

    .article-link-item h3 {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .article-link-item span {
      font-size: 0.78rem;
      color: var(--primary-hover);
    }

    /* 智能需求匹配与联系我们表单 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    .form-control:focus {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

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

    .contact-side-info {
      background: var(--bg-card-soft);
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 28px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .qr-box {
      text-align: center;
      padding: 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      width: fit-content;
      margin: 0 auto;
    }

    .qr-box img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      margin: 0 auto 8px auto;
    }

    .qr-label {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--text-secondary);
    }

    .contact-details-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

    .contact-details-list strong {
      color: var(--text-main);
    }

    /* 友情链接与主页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px 0;
      color: var(--text-secondary);
    }

    .footer-links-wrap {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      padding-bottom: 24px;
      margin-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.88rem;
    }

    .footer-links-label {
      font-weight: 700;
      color: var(--text-main);
    }

    .footer-links-wrap a {
      color: var(--text-secondary);
      padding: 3px 8px;
      border-radius: 4px;
      background: #f8fafc;
    }

    .footer-links-wrap a:hover {
      color: var(--primary-hover);
      background: var(--primary-light);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.84rem;
      color: var(--text-muted);
    }

    .footer-bottom-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
      font-weight: 700;
    }

    /* 浮动客服入口 & 回到顶部 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 99;
    }

    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--primary-border);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary-hover);
      font-size: 1.2rem;
      font-weight: 800;
      transition: var(--transition-fast);
    }

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

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.3rem;
      }
      .platform-features-grid,
      .industry-grid,
      .case-gallery,
      .reviews-grid,
      .price-grid,
      .wiki-grid,
      .partner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .network-bar {
        flex-direction: column;
        text-align: center;
      }
      .network-stats {
        justify-content: center;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: flex;
      }
      .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-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-item {
        width: 100%;
        text-align: center;
      }
      .nav-item a {
        display: block;
        padding: 10px 0;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-subtitle {
        font-size: 1rem;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .platform-features-grid,
      .creation-showcase,
      .industry-grid,
      .case-gallery,
      .banner-media-row,
      .reviews-grid,
      .price-grid,
      .wiki-grid,
      .partner-grid,
      .contact-form-layout {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .score-summary-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }