:root {
      --primary: #FF5500;
      --primary-hover: #E04800;
      --primary-light: #FFF2EB;
      --primary-gradient: linear-gradient(135deg, #FF6A00 0%, #EE3800 100%);
      --accent: #FFA000;
      --text-main: #1D2129;
      --text-regular: #4E5969;
      --text-muted: #86909C;
      --bg-page: #F8F9FA;
      --bg-card: #FFFFFF;
      --border-color: #EFE6E1;
      --border-accent: #FFD4C2;
      --shadow-sm: 0 2px 8px rgba(255, 85, 0, 0.05);
      --shadow-md: 0 8px 24px rgba(238, 56, 0, 0.08);
      --shadow-lg: 0 16px 36px rgba(238, 56, 0, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    /* 统一居中容器规范 */
    .ai-container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 85, 0, 0.12);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

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

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

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-name span {
      color: var(--primary);
    }

    /* 强制要求：.nav-links 的 gap 属性设置为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 10px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-regular);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: var(--primary-light);
    }

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

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

    .btn-primary {
      background: var(--primary-gradient);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.28);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #FF7B1A 0%, #F54008 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 85, 0, 0.35);
      color: #FFFFFF;
    }

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

    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-btn svg {
      width: 26px;
      height: 26px;
      stroke: var(--text-main);
    }

    /* 首屏 Hero 区域：严禁出现任何图片，采用纯 CSS 科技感视觉 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 85% 15%, rgba(255, 106, 0, 0.12) 0%, transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(255, 160, 0, 0.08) 0%, transparent 40%),
                  #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 70px 0 65px;
      overflow: hidden;
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-light);
      border: 1px solid var(--border-accent);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 22px;
      animation: pulseLight 2.5s infinite;
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      max-width: 900px;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

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

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-regular);
      max-width: 780px;
      margin-bottom: 34px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-cta-group .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.1rem;
      background: var(--primary-gradient);
      color: #FFFFFF;
      border-radius: var(--radius-sm);
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(255, 85, 0, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .hero-cta-group .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(255, 85, 0, 0.45);
      color: #FFFFFF;
    }

    .hero-cta-group .btn-hero-outline {
      padding: 14px 30px;
      font-size: 1.1rem;
      border: 1px solid var(--border-accent);
      background: #FFFFFF;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      font-weight: 600;
    }

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

    /* 纯代码科技卡片区 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      max-width: 1040px;
      margin-top: 10px;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-color);
      border-top: 3px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .stat-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-regular);
      font-weight: 500;
    }

    /* 全局通用区块排版 */
    .section-padding {
      padding: 70px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 46px;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.84rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      background: var(--primary-light);
      padding: 5px 14px;
      border-radius: 20px;
      margin-bottom: 10px;
      border: 1px solid var(--border-accent);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-regular);
      max-width: 680px;
      margin: 0 auto;
    }

    /* 平台介绍板块 */
    .about-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }

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

    .about-content h3 {
      font-size: 1.65rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
      line-height: 1.4;
    }

    .about-content p {
      font-size: 1rem;
      color: var(--text-regular);
      margin-bottom: 20px;
      text-align: justify;
    }

    .about-features {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: var(--bg-page);
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .feature-icon {
      flex-shrink: 0;
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: bold;
    }

    .feature-text h4 {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .feature-text p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.4;
    }

    .about-panel {
      background: linear-gradient(145deg, #FFF6F0 0%, #FFFFFF 100%);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .panel-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .model-tags-box {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-chip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: scale(1.04);
    }

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: transparent;
      transition: var(--transition);
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-accent);
    }

    .service-card:hover::before {
      background: var(--primary-gradient);
    }

    .card-icon-wrap {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 18px;
    }

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

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 18px;
    }

    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
    }

    /* 一站式制作与标准流程 */
    .workflow-section {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
      text-align: center;
      transition: var(--transition);
    }

    .step-box:hover {
      border-color: var(--border-accent);
      background: #FFFDFB;
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-size: 1.15rem;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(255, 85, 0, 0.25);
    }

    .step-box h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 0.88rem;
      color: var(--text-regular);
      line-height: 1.55;
    }

    /* 对比评测核心板块 */
    .compare-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #FFF9F5 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .rating-summary-banner {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 28px 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-main {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-circle {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #FFFFFF;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(255, 85, 0, 0.3);
    }

    .score-num {
      font-size: 1.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-max {
      font-size: 0.75rem;
      opacity: 0.9;
    }

    .rating-detail h4 {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .stars-line {
      display: flex;
      align-items: center;
      gap: 4px;
      color: #FF9800;
      font-size: 1.15rem;
      font-weight: bold;
    }

    .stars-line span {
      color: var(--text-regular);
      font-size: 0.95rem;
      margin-left: 8px;
    }

    .rating-desc {
      font-size: 0.95rem;
      color: var(--text-regular);
      max-width: 460px;
      line-height: 1.6;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #FDF9F7;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table th.highlight-col,
    .compare-table td.highlight-col {
      background: #FFF5F0;
      color: var(--primary);
      font-weight: 600;
      border-left: 1px solid var(--border-accent);
      border-right: 1px solid var(--border-accent);
    }

    .compare-table tr:hover td {
      background: #FAF8F6;
    }

    .compare-table tr:hover td.highlight-col {
      background: #FFEFE6;
    }

    /* 案例中心与展示图 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .case-card {
      background: #FFFFFF;
      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(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-accent);
    }

    .case-img-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #F0EDE8;
      overflow: hidden;
    }

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

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

    .case-info {
      padding: 20px 22px;
      flex-grow: 1;
    }

    .case-tag {
      font-size: 0.78rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 8px;
    }

    .case-info h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 0.9rem;
      color: var(--text-regular);
      line-height: 1.5;
    }

    .banner-gallery-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .gallery-item {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
      aspect-ratio: 4 / 3;
      background: #F4F1EC;
    }

    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .gallery-item:hover img {
      transform: scale(1.05);
    }

    /* Token 比价板块 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

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

    .token-model-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .token-price-original {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-decoration: line-through;
      margin-bottom: 6px;
    }

    .token-price-our {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .token-save-badge {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      background: #E8FFEA;
      color: #00B42A;
      padding: 3px 10px;
      border-radius: 12px;
      margin-bottom: 14px;
    }

    .token-desc {
      font-size: 0.82rem;
      color: var(--text-regular);
      border-top: 1px dashed var(--border-color);
      padding-top: 10px;
    }

    /* 需求匹配与联系表单板块 */
    .form-section {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .form-wrapper-box {
      max-width: 840px;
      margin: 0 auto;
      background: #FFFFFF;
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .smart-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

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

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
    }

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

    .form-control:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(255, 85, 0, 0.12);
    }

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

    .form-submit-row {
      grid-column: span 2;
      text-align: center;
      margin-top: 10px;
    }

    /* 用户评论板块 */
    .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-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

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

    .review-quote {
      font-size: 0.93rem;
      color: var(--text-regular);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

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

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border-accent);
    }

    .user-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

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

    /* 加盟代理板块 */
    .agent-banner {
      background: linear-gradient(135deg, #FFF5EE 0%, #FFFFFF 100%);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 38px 44px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      box-shadow: var(--shadow-sm);
      margin-top: 20px;
    }

    .agent-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .agent-info p {
      font-size: 0.98rem;
      color: var(--text-regular);
      max-width: 660px;
      line-height: 1.65;
    }

    /* FAQ 手风琴面板 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

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

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

    .faq-header {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      background: #FFFFFF;
    }

    .faq-header h3 {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FCFAF8;
    }

    .faq-item.active .faq-body {
      max-height: 300px;
      padding: 16px 24px;
      border-top: 1px solid var(--border-color);
    }

    .faq-body p {
      font-size: 0.94rem;
      color: var(--text-regular);
      line-height: 1.7;
    }

    /* 资讯与百科文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

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

    .article-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-regular);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .article-link {
      font-size: 0.88rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 页脚与友情链接 */
    .site-footer {
      background: #18191C;
      color: #A4ABB5;
      padding: 60px 0 24px;
      border-top: 3px solid var(--primary);
      font-size: 0.92rem;
    }

    .footer-main-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      margin: 14px 0 16px;
      color: #8C939F;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a {
      color: #A4ABB5;
    }

    .footer-links-list a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-box {
      width: 100px;
      height: 100px;
      background: #FFFFFF;
      padding: 4px;
      border-radius: 6px;
    }

    .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .qr-note {
      font-size: 0.82rem;
      line-height: 1.5;
      color: #8C939F;
    }

    .friend-links-box {
      border-top: 1px solid #2B2F38;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.92rem;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 12px;
    }

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

    .friend-links-list a {
      color: #8C939F;
      font-size: 0.85rem;
      transition: var(--transition);
    }

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

    .footer-bottom {
      border-top: 1px solid #252830;
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: #6C727F;
    }

    .footer-bottom a.ai-page-home-link {
      color: var(--primary);
      margin-left: 8px;
    }

    /* 浮动客服入口 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.4);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }

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

    .back-to-top {
      display: none;
      background: #FFFFFF;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .back-to-top:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 关键帧动画 */
    @keyframes pulseLight {
      0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 85, 0, 0.2);
      }
      50% {
        box-shadow: 0 0 0 8px rgba(255, 85, 0, 0);
      }
    }

    /* 响应式适配 */
    @media (max-width: 1080px) {
      .services-grid,
      .token-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-main-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 0;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .cases-grid,
      .reviews-grid,
      .services-grid,
      .token-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .smart-form {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .banner-gallery-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .rating-summary-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .agent-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }