:root {
      --primary: #0052d9;
      --primary-hover: #003cab;
      --primary-light: #ecf2fe;
      --accent: #00a870;
      --accent-warm: #ed7b2f;
      --text-main: #1d2129;
      --text-regular: #4e5969;
      --text-muted: #86909c;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-subtle: #f2f3f5;
      --border-color: #e5e6eb;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 82, 217, 0.08);
      --shadow-lg: 0 16px 36px rgba(0, 82, 217, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --container-width: 1240px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      position: relative;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-width);
      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(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 20px;
    }

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

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

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

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

    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 99px;
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #0052d9 0%, #0077fa 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(0, 82, 217, 0.25);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #003cab 0%, #0052d9 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0, 82, 217, 0.35);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
    }

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

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

    .mobile-menu-btn span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero 区域 (严格禁止图片) */
    .hero-section {
      position: relative;
      padding: 80px 0 90px;
      background: radial-gradient(circle at 10% 20%, #eef5ff 0%, #ffffff 50%),
                  radial-gradient(circle at 90% 80%, #edf9f4 0%, #ffffff 60%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: rgba(0, 82, 217, 0.08);
      border: 1px solid rgba(0, 82, 217, 0.2);
      border-radius: 99px;
      color: var(--primary);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      color: #0b1526;
      max-width: 960px;
      letter-spacing: -0.8px;
      margin-bottom: 24px;
    }

    .hero-desc {
      font-size: 1.15rem;
      line-height: 1.75;
      color: var(--text-regular);
      max-width: 820px;
      margin-bottom: 36px;
    }

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

    .btn-hero-official {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: 99px;
      background: linear-gradient(135deg, #0052d9 0%, #0099ff 100%);
      color: #ffffff;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(0, 82, 217, 0.35);
    }

    .btn-hero-official:hover {
      background: linear-gradient(135deg, #003cab 0%, #0077fa 100%);
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(0, 82, 217, 0.45);
    }

    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      max-width: 1060px;
      margin-top: 10px;
    }

    .metric-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 82, 217, 0.3);
    }

    .metric-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-variant-numeric: tabular-nums;
    }

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

    /* 通用Section布局 */
    .section-block {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

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

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      border-radius: 4px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-regular);
      line-height: 1.7;
    }

    /* 关于我们 & 平台介绍 */
    .platform-intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .intro-text-box h3 {
      font-size: 1.65rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
      line-height: 1.35;
    }

    .intro-text-box p {
      font-size: 1rem;
      color: var(--text-regular);
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .intro-features-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

    .intro-features-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .intro-features-list li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background: var(--accent);
      color: #fff;
      border-radius: 50%;
      font-size: 0.75rem;
      flex-shrink: 0;
    }

    .intro-media-card {
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .intro-media-card img {
      border-radius: calc(var(--radius-lg) - 6px);
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 支持模型标签云 */
    .model-badge-wrap {
      margin-top: 40px;
      padding: 28px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .model-badge-wrap h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .badge-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-tag {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 0.85rem;
      color: var(--text-regular);
      font-weight: 500;
      transition: var(--transition);
    }

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

    /* 核心AIGC场景矩阵 (24+场景) */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-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;
    }

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

    .scenario-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .scenario-name {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .scenario-chip {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 4px;
      font-weight: 600;
    }

    .scenario-card-body {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.65;
      margin-bottom: 18px;
    }

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

    /* 一站式制作流程 */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .timeline-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .timeline-badge {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 18px;
      box-shadow: 0 4px 10px rgba(0, 82, 217, 0.25);
    }

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

    .timeline-step p {
      font-size: 0.9rem;
      color: var(--text-regular);
      line-height: 1.6;
    }

    /* 对比评测表格与评测卡片 */
    .evaluation-summary-box {
      background: linear-gradient(135deg, #0b1526 0%, #16243d 100%);
      border-radius: var(--radius-lg);
      color: #ffffff;
      padding: 36px 40px;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-highlight h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .eval-highlight p {
      color: #a0aec0;
      font-size: 0.95rem;
    }

    .eval-score-badge {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }

    .score-number {
      font-size: 3.5rem;
      font-weight: 900;
      color: #ffbf00;
      line-height: 1;
    }

    .score-max {
      font-size: 1.2rem;
      color: #a0aec0;
    }

    .stars-indicator {
      color: #ffbf00;
      font-size: 1.4rem;
      margin-top: 4px;
    }

    .comparison-table-wrap {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      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;
      min-width: 680px;
    }

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

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

    .comparison-table th.col-highlight {
      background-color: #eef5ff;
      color: var(--primary);
    }

    .comparison-table td.col-highlight {
      background-color: #f9fbff;
      font-weight: 600;
      color: var(--primary);
    }

    /* 案例展示 */
    .case-media-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

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

    .case-image-box {
      width: 100%;
      height: 280px;
      overflow: hidden;
      background: #e2e8f0;
    }

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

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

    .case-card-body {
      padding: 24px;
      flex-grow: 1;
    }

    .case-card-body h4 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

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

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

    .pricing-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .pricing-card.popular {
      border: 2px solid var(--primary);
      position: relative;
      transform: scale(1.02);
      box-shadow: var(--shadow-md);
    }

    .popular-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 4px 12px;
      border-radius: 99px;
      font-weight: 700;
    }

    .pricing-header h4 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .pricing-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 16px 0 20px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

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

    .pricing-features {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }

    .pricing-features li {
      font-size: 0.92rem;
      color: var(--text-regular);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
    }

    /* 需求匹配表单 */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .form-info h3 {
      font-size: 1.7rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .form-info p {
      color: var(--text-regular);
      font-size: 0.98rem;
      margin-bottom: 28px;
      line-height: 1.7;
    }

    .contact-spec-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-spec-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      font-size: 0.95rem;
    }

    .contact-spec-item strong {
      color: var(--text-main);
      min-width: 80px;
    }

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

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

    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-family: inherit;
      color: var(--text-main);
      background-color: #ffffff;
      transition: var(--transition);
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.12);
    }

    /* FAQ 折叠面板 */
    .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;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .faq-header {
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
    }

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

    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.25s ease;
      color: var(--text-muted);
    }

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

    .faq-body {
      padding: 0 22px 18px;
      font-size: 0.95rem;
      color: var(--text-regular);
      line-height: 1.7;
      display: none;
      border-top: 1px solid var(--bg-subtle);
    }

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

    /* 用户评论卡片 (6条) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .testi-stars {
      color: #ffbf00;
      font-size: 1.1rem;
      margin-bottom: 12px;
    }

    .testi-text {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .author-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info span {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 行业资讯与动态文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .article-item-card h4 {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }

    .article-item-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;
    }

    /* 友情链接与底部 */
    .site-footer {
      background: #111827;
      color: #9ca3af;
      padding: 60px 0 30px;
      border-top: 1px solid #1f2937;
    }

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

    .footer-brand-info h4 {
      color: #ffffff;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-brand-info p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: #9ca3af;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 18px;
    }

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

    .footer-links-list a {
      color: #9ca3af;
      font-size: 0.9rem;
    }

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

    .footer-qrcode-box {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
    }

    .footer-qrcode-box img {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      background: #ffffff;
      padding: 4px;
    }

    .friend-links-strip {
      border-top: 1px solid #1f2937;
      padding: 24px 0;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
    }

    .friend-links-strip span {
      color: #d1d5db;
      font-weight: 600;
    }

    .friend-links-strip a {
      color: #9ca3af;
    }

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

    .copyright-strip {
      border-top: 1px solid #1f2937;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
    }

    .copyright-strip a {
      color: #9ca3af;
    }

    /* 浮动客服挂件 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-weight: 700;
      font-size: 1.1rem;
      transition: var(--transition);
      text-decoration: none;
    }

    .widget-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .pricing-grid {
        grid-template-columns: repeat(1, 1fr);
      }
      .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

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

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

      .hero-title {
        font-size: 2rem;
      }

      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .platform-intro-grid {
        grid-template-columns: 1fr;
      }

      .scenarios-grid {
        grid-template-columns: 1fr;
      }

      .case-media-grid {
        grid-template-columns: 1fr;
      }

      .form-section-layout {
        grid-template-columns: 1fr;
        padding: 24px;
      }

      .testimonials-grid {
        grid-template-columns: 1fr;
      }

      .articles-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }
    }