:root {
      --primary: #1d4ed8;
      --primary-bright: #2563eb;
      --primary-light: #eff6ff;
      --accent: #0ea5e9;
      --accent-glow: #38bdf8;
      --dark-text: #0f172a;
      --body-text: #334155;
      --muted-text: #64748b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-color: #e2e8f0;
      --card-shadow: 0 4px 20px -2px rgba(37, 99, 235, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --card-hover-shadow: 0 12px 30px -4px rgba(37, 99, 235, 0.15), 0 4px 12px -2px rgba(0, 0, 0, 0.06);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      color: var(--body-text);
      background-color: var(--bg-light);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background: radial-gradient(circle at 50% 0%, #dbeafe 0%, #f8fafc 40%, #f1f5f9 100%);
      min-height: 100vh;
    }

    a {
      color: var(--primary-bright);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--primary);
    }

    .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, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .brand-logo-wrap {
      max-height: 44px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

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

    .brand-badge {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
      border: 1px solid #bfdbfe;
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }

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

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

    .nav-links li a:hover {
      color: var(--primary-bright);
      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-md);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 100%);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary-bright);
      border: 1px solid #bfdbfe;
    }

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

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.875rem;
    }

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

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark-text);
      cursor: pointer;
      padding: 4px;
    }

    /* 区域公用样式 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-wrap.bg-white-sub {
      background-color: var(--bg-white);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      color: var(--primary-bright);
      background: var(--primary-light);
      border: 1px solid #bfdbfe;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

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

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

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 90px 0;
      background: linear-gradient(180deg, rgba(239, 246, 255, 0.7) 0%, rgba(248, 250, 252, 0) 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-h1 {
      font-size: 2.7rem;
      font-weight: 900;
      color: var(--dark-text);
      line-height: 1.25;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
    }

    .hero-h1 .highlight {
      color: var(--primary-bright);
      background: linear-gradient(135deg, #1d4ed8 0%, #0284c7 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.15rem;
      color: var(--body-text);
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .hero-features-list {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .hero-features-list li {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      color: var(--muted-text);
      font-weight: 500;
    }

    .hero-features-list li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 18px;
      height: 18px;
      background: #dbeafe;
      color: var(--primary);
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: bold;
    }

    .hero-visual-card {
      background: #ffffff;
      border: 1px solid #dbeafe;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.12), 0 1px 3px rgba(0, 0, 0, 0.05);
      position: relative;
    }

    .hero-visual-card::before {
      content: "";
      position: absolute;
      top: -10px;
      right: -10px;
      width: 80px;
      height: 80px;
      background: linear-gradient(135deg, var(--accent), var(--primary-bright));
      filter: blur(40px);
      opacity: 0.3;
      border-radius: 50%;
      z-index: 0;
    }

    .matrix-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      z-index: 1;
    }

    .matrix-badge {
      font-size: 0.75rem;
      color: #16a34a;
      background: #dcfce7;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    .model-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
      position: relative;
      z-index: 1;
    }

    .model-tag {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      color: var(--dark-text);
      font-size: 0.8rem;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }

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

    .speed-metrics {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      position: relative;
      z-index: 1;
    }

    .speed-metric-item {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 12px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .speed-metric-num {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary-bright);
    }

    .speed-metric-label {
      font-size: 0.75rem;
      color: var(--muted-text);
      margin-top: 2px;
    }

    /* 数据指标条 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      transition: transform 0.25s ease;
    }

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

    .metric-value {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary-bright);
      line-height: 1;
      margin-bottom: 6px;
    }

    .metric-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 4px;
    }

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

    /* 服务卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-hover-shadow);
      border-color: #93c5fd;
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
      border: 1px solid #bfdbfe;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: var(--primary);
      margin-bottom: 18px;
    }

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

    .service-card-desc {
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-highlights {
      list-style: none;
      padding: 0;
      margin: 0 0 18px 0;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .service-highlights li {
      font-size: 0.85rem;
      color: var(--muted-text);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-highlights li::before {
      content: "•";
      color: var(--primary-bright);
      font-size: 1.1rem;
    }

    /* 行业解决方案 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .industry-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
    }

    .industry-card:hover {
      border-color: #bfdbfe;
      transform: translateY(-4px);
    }

    .industry-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 12px;
    }

    .industry-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 10px;
    }

    .industry-desc {
      font-size: 0.9rem;
      color: var(--body-text);
      line-height: 1.6;
      margin-bottom: 14px;
    }

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

    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--card-shadow);
    }

    .step-badge {
      width: 36px;
      height: 36px;
      background: var(--primary-bright);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 14px;
    }

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

    .step-desc {
      font-size: 0.875rem;
      color: var(--muted-text);
      line-height: 1.5;
    }

    /* 案例中心 */
    .case-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: #93c5fd;
    }

    .case-media {
      width: 100%;
      background: #f1f5f9;
      position: relative;
      overflow: hidden;
    }

    .case-media img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

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

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

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.875rem;
      color: var(--body-text);
      line-height: 1.5;
      margin-bottom: 14px;
      flex-grow: 1;
    }

    .case-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: var(--muted-text);
      border-top: 1px solid var(--border-color);
      padding-top: 10px;
    }

    /* 对比评测表格 */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--card-shadow);
      overflow-x: auto;
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
      color: #ffffff;
      padding: 20px 28px;
      border-radius: var(--radius-md);
      margin-bottom: 24px;
    }

    .rating-score {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .rating-number {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 1.2rem;
    }

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

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

    .compare-table th {
      background-color: var(--bg-light);
      color: var(--dark-text);
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background-color: #f8fafc;
    }

    .compare-table .highlight-col {
      background-color: rgba(239, 246, 255, 0.6);
      font-weight: 600;
      color: var(--primary);
    }

    /* 需求匹配与表单 */
    .demand-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .demand-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

    .demand-form-card {
      background: #ffffff;
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-hover-shadow);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--dark-text);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background-color: #ffffff;
      color: var(--dark-text);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-bright);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

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

    /* 用户评论 */
    .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: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-body {
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }

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

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

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-text);
    }

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

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 860px;
      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: 0 2px 6px rgba(0, 0, 0, 0.02);
      transition: border-color 0.2s ease;
    }

    .faq-item.active {
      border-color: #93c5fd;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--dark-text);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      background-color: #ffffff;
    }

    .faq-question:hover {
      background-color: #f8fafc;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary-bright);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background-color: #f8fafc;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      border-top-color: var(--border-color);
    }

    .faq-answer-inner {
      padding: 18px 22px;
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.6;
    }

    /* 最新资讯文章与文章短代码 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-meta {
      font-size: 0.8rem;
      color: var(--muted-text);
      display: flex;
      justify-content: space-between;
    }

    /* 平台介绍与关于我们 */
    .about-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

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

    .about-feature-box {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
    }

    .about-feature-box h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 4px;
    }

    .about-feature-box p {
      font-size: 0.85rem;
      color: var(--muted-text);
    }

    /* 底部联系与页脚 */
    .site-footer {
      background-color: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h3, .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

    .footer-links li a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 0.9rem;
      color: #94a3b8;
    }

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

    .footer-qr-img {
      width: 90px;
      height: 90px;
      background: #ffffff;
      padding: 4px;
      border-radius: var(--radius-sm);
    }

    .footer-qr-img img {
      width: 100%;
      height: 100%;
      display: block;
      object-fit: cover;
    }

    .footer-qr-text {
      font-size: 0.8rem;
      color: #94a3b8;
      line-height: 1.4;
    }

    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.9rem;
      color: #64748b;
      margin-bottom: 12px;
      font-weight: 600;
    }

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

    .friend-links-list a {
      color: #94a3b8;
      font-size: 0.85rem;
    }

    .friend-links-list a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服 */
    .floating-contact {
      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: #ffffff;
      color: var(--primary-bright);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.2rem;
      transition: all 0.25s ease;
      position: relative;
    }

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

    .float-qr-pop {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: none;
      width: 140px;
      text-align: center;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
    }

    .float-qr-pop p {
      font-size: 0.75rem;
      color: var(--dark-text);
      margin-top: 6px;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-grid, .demand-form-grid, .about-layout {
        grid-template-columns: 1fr;
      }
      .industry-grid, .case-container, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .nav-menu.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
        width: 100%;
      }
      .nav-actions {
        display: none;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .process-timeline, .industry-grid, .case-container, .reviews-grid, .metrics-bar {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }