:root {
      --primary: #1a56db;
      --primary-hover: #1e40af;
      --primary-light: #eff6ff;
      --accent: #2563eb;
      --accent-glow: #3b82f6;
      --highlight: #f59e0b;
      --dark-text: #0f172a;
      --body-text: #334155;
      --muted-text: #64748b;
      --border-color: #e2e8f0;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --container-width: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(26, 86, 219, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 35px -10px rgba(26, 86, 219, 0.15);
      --transition: all 0.3s 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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-main);
      color: var(--body-text);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    /* 统一居中容器体系 */
    .container {
      width: 100%;
      max-width: var(--container-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, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      max-width: 100%;
      display: block;
      object-fit: contain;
    }

    .brand-name-sub {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

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

    .nav-links li {
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--dark-text);
      border-radius: 6px;
    }

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

    .header-action-group {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(26, 86, 219, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background-color: transparent;
    }

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

    .btn-lg {
      padding: 14px 32px;
      font-size: 1.1rem;
      border-radius: var(--radius-md);
    }

    .btn-highlight {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
    }
    .btn-highlight:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
      color: #ffffff;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark-text);
      cursor: pointer;
      padding: 6px;
    }

    /* 区域排版通用 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-alt {
      background-color: #ffffff;
    }

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

    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 30px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      border: 1px solid rgba(26, 86, 219, 0.15);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark-text);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--muted-text);
      line-height: 1.6;
    }

    /* 首屏 HERO (无图片要求) */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 50% 10%, rgba(37, 99, 235, 0.08) 0%, rgba(248, 250, 252, 0) 70%), var(--bg-main);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
      overflow: hidden;
    }

    .hero-inner {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge-row {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(26, 86, 219, 0.2);
      border-radius: 50px;
      box-shadow: 0 4px 12px rgba(26, 86, 219, 0.06);
      margin-bottom: 24px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      color: var(--dark-text);
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }

    .hero-title span {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--body-text);
      max-width: 800px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    /* 首屏纯CSS高科技数据指标面板 (替代图片) */
    .hero-metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      text-align: left;
      margin-top: 20px;
    }

    .hero-metric-card {
      background: #ffffff;
      padding: 22px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

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

    .hero-metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(26, 86, 219, 0.3);
    }

    .metric-value {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-family: Arial, sans-serif;
    }

    .metric-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--dark-text);
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 0.8rem;
      color: var(--muted-text);
    }

    /* 平台介绍与多模型聚合矩阵 */
    .model-matrix-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .matrix-content-box h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .matrix-feature-list {
      list-style: none;
      display: grid;
      gap: 14px;
      margin: 24px 0 30px 0;
    }

    .matrix-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.98rem;
      color: var(--body-text);
    }

    .feature-icon-bullet {
      width: 20px;
      height: 20px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 3px;
    }

    .model-tags-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 30px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }

    .model-tags-header {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .tags-badge {
      font-size: 0.75rem;
      padding: 3px 8px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 4px;
    }

    .model-chip-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-chip {
      padding: 6px 12px;
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--dark-text);
      transition: var(--transition);
    }

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

    /* 一站式制作能力卡片区 (4列/3列自适应) */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      border-color: rgba(26, 86, 219, 0.4);
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .service-card-top {
      margin-bottom: 18px;
    }

    .service-card-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
      background: var(--primary-light);
      color: var(--primary);
    }

    .service-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 10px;
    }

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

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

    /* 行业方案与图文版块 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

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

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

    .industry-img-box {
      width: 100%;
      height: 240px;
      background-color: var(--bg-alt);
      overflow: hidden;
      position: relative;
    }

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

    .industry-card:hover .industry-img-box img {
      transform: scale(1.05);
    }

    .industry-card-body {
      padding: 26px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .industry-card-body h4 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 10px;
    }

    .industry-card-body p {
      font-size: 0.95rem;
      color: var(--body-text);
      margin-bottom: 16px;
    }

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

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

    .workflow-num {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #ffffff;
      font-size: 1.2rem;
      font-weight: 800;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(26, 86, 219, 0.25);
    }

    .workflow-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 8px;
    }

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

    /* 对比评测版块 */
    .benchmark-section {
      background: linear-gradient(180deg, #ffffff 0%, var(--primary-light) 100%);
    }

    .benchmark-score-banner {
      background: #ffffff;
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 30px 40px;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-md);
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-badge-circle {
      width: 90px;
      height: 90px;
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35);
      flex-shrink: 0;
    }

    .score-num {
      font-size: 2rem;
      font-weight: 900;
      line-height: 1;
    }

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

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

    .star-row {
      color: #f59e0b;
      font-size: 1.1rem;
      margin-bottom: 4px;
    }

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

    .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-color: var(--bg-alt);
      color: var(--dark-text);
      font-weight: 700;
    }

    .comparison-table th.col-highlight,
    .comparison-table td.col-highlight {
      background-color: rgba(239, 246, 255, 0.6);
      color: var(--primary);
      font-weight: 700;
    }

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

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

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .token-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: translateY(-6px);
    }

    .featured-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }

    .token-card-header h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 12px;
    }

    .token-price-wrap {
      margin: 16px 0 20px 0;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .token-price-main {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      font-family: Arial, sans-serif;
    }

    .token-price-unit {
      font-size: 0.85rem;
      color: var(--muted-text);
    }

    .token-feature-list {
      list-style: none;
      display: grid;
      gap: 10px;
      margin-bottom: 24px;
      font-size: 0.9rem;
      color: var(--body-text);
    }

    /* 用户真实评价 (6条) */
    .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);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(26, 86, 219, 0.3);
    }

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 0.9rem;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--body-text);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: normal;
    }

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

    .author-avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 2px;
    }

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

    /* FAQ 折叠面板 (>=10条) */
    .faq-wrapper {
      max-width: 880px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }

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

    .faq-item:hover {
      border-color: rgba(26, 86, 219, 0.3);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-text);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: var(--bg-main);
      padding: 0 22px;
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 22px 20px 22px;
      border-top: 1px solid var(--border-color);
    }

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

    /* 需求匹配与提交表单 */
    .form-match-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-left-info h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 14px;
    }

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

    .contact-quick-list {
      list-style: none;
      display: grid;
      gap: 16px;
      font-size: 0.95rem;
      color: var(--body-text);
    }

    .contact-quick-item {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .contact-badge-label {
      width: 70px;
      font-weight: 700;
      color: var(--primary);
    }

    .lead-form {
      display: grid;
      gap: 16px;
    }

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

    .form-group label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--dark-text);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--dark-text);
      background-color: #ffffff;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
    }

    textarea.form-control {
      min-height: 90px;
      resize: vertical;
    }

    /* 最新文章与资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .article-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .article-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-card:hover .article-title {
      color: var(--primary);
    }

    /* 友情链接与生态板块 */
    .links-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 30px;
      margin-top: 30px;
    }

    .links-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 14px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 8px;
    }

    .links-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .links-cloud a {
      color: var(--body-text);
      font-size: 0.9rem;
      padding: 4px 10px;
      background: var(--bg-alt);
      border-radius: 4px;
      transition: var(--transition);
    }

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

    /* 页脚设计 */
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col-nav {
      list-style: none;
      display: grid;
      gap: 10px;
      font-size: 0.9rem;
    }

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

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

    .footer-qr-card {
      background: #1e293b;
      padding: 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      text-align: center;
    }

    .footer-qr-card img {
      width: 100px;
      height: 100px;
      display: block;
      margin: 0 auto 8px auto;
      border-radius: 4px;
      background: #fff;
    }

    .footer-qr-card span {
      font-size: 0.75rem;
      color: #cbd5e1;
    }

    .footer-bottom-bar {
      padding-top: 25px;
      border-top: 1px solid #1e293b;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
      color: #64748b;
    }

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

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(26, 86, 219, 0.4);
      cursor: pointer;
      transition: var(--transition);
      border: none;
      font-size: 1.2rem;
    }

    .float-btn:hover {
      background: var(--primary-hover);
      transform: scale(1.08);
    }

    .back-to-top {
      background: #0f172a;
      opacity: 0.8;
    }

    /* 移动端响应式适配 */
    @media (max-width: 1024px) {
      .services-grid,
      .token-pricing-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid,
      .hero-metric-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .model-matrix-grid,
      .industry-grid,
      .services-grid,
      .token-pricing-grid,
      .reviews-grid,
      .articles-grid,
      .workflow-grid,
      .hero-metric-grid,
      .form-match-grid,
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .benchmark-score-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .score-left {
        flex-direction: column;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .header-action-group {
        display: none;
      }
      .float-service-widget {
        right: 12px;
        bottom: 20px;
      }
    }