/* CSS Reset & Variables */
    :root {
      --bg-base: #f8fafc;
      --bg-surface: #ffffff;
      --bg-subtle: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-neon: rgba(99, 102, 241, 0.25);
      
      /* 霓虹亮彩风 - 浅色底高光色彩体系 */
      --neon-cyan: #06b6d4;
      --neon-blue: #3b82f6;
      --neon-purple: #8b5cf6;
      --neon-pink: #ec4899;
      --neon-amber: #f59e0b;
      --neon-emerald: #10b981;
      
      --gradient-neon: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
      --gradient-glow: linear-gradient(135deg, rgba(6,182,212,0.1) 0%, rgba(59,130,246,0.1) 50%, rgba(139,92,246,0.1) 100%);
      --gradient-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
      
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
      --shadow-md: 0 4px 12px -1px rgba(15,23,42,0.08), 0 2px 6px -2px rgba(15,23,42,0.04);
      --shadow-neon: 0 10px 25px -5px rgba(59,130,246,0.15), 0 8px 10px -6px rgba(139,92,246,0.1);
      --shadow-hover: 0 20px 30px -10px rgba(59,130,246,0.2), 0 10px 10px -5px rgba(6,182,212,0.08);
      
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --container-max: 1200px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      position: relative;
    }

    /* 贯穿全页的科技感微光背景层 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: 
        radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 85% 35%, rgba(139, 92, 246, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 50%);
      pointer-events: none;
      z-index: -1;
    }

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

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

    .container {
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

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

    .brand-title-wrap {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      background: var(--gradient-neon);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .brand-desc {
      font-size: 0.75rem;
      color: var(--text-light);
      font-weight: 500;
    }

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

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0; /* 严格满足约束 */
    }

    .nav-item a {
      padding: 8px 14px;
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-item a:hover {
      color: var(--neon-blue);
      background: rgba(59, 130, 246, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--gradient-neon);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--neon-blue);
      border-color: rgba(59, 130, 246, 0.4);
    }

    .btn-outline:hover {
      background: rgba(59, 130, 246, 0.05);
      border-color: var(--neon-blue);
      transform: translateY(-2px);
    }

    .btn-subtle {
      background: var(--bg-subtle);
      color: var(--text-main);
      border-color: var(--border-color);
    }

    .btn-subtle:hover {
      background: #e2e8f0;
      color: var(--neon-purple);
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 1.0625rem;
      border-radius: var(--radius-md);
    }

    /* 移动端菜单切换按钮 */
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .menu-toggle span {
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* Section 通用规范 */
    .section-block {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      background: rgba(59, 130, 246, 0.08);
      border: 1px solid rgba(59, 130, 246, 0.2);
      color: var(--neon-blue);
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Hero 首屏 - 严格要求无图片，仅使用CSS几何与霓虹科技感 */
    .hero-section {
      padding: 90px 0 70px 0;
      background: linear-gradient(180deg, rgba(255,255,255,0.8) 0%, rgba(241,245,249,0.6) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -100px;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 300px;
      background: radial-gradient(circle, rgba(6,182,212,0.15) 0%, rgba(139,92,246,0.1) 50%, transparent 70%);
      filter: blur(50px);
      z-index: 0;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge-wrap {
      margin-bottom: 20px;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 18px;
      background: #ffffff;
      border: 1px solid rgba(59, 130, 246, 0.3);
      border-radius: var(--radius-full);
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.08);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--neon-blue);
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-emerald);
      box-shadow: 0 0 8px var(--neon-emerald);
    }

    /* H1 字数控制在20字以内 */
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title-highlight {
      background: var(--gradient-neon);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 780px;
      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;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient-neon);
      opacity: 0;
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(59, 130, 246, 0.3);
    }

    .stat-card:hover::before {
      opacity: 1;
    }

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.875rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 平台核心卡片与网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      align-items: center;
    }

    .card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(59, 130, 246, 0.4);
    }

    .card-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--gradient-glow);
      border: 1px solid rgba(59,130,246,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--neon-blue);
    }

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

    .card-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

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

    .tag-item {
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
      background: var(--bg-subtle);
      color: var(--text-muted);
      border: 1px solid var(--border-color);
    }

    /* 场景矩阵多格展示 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
      gap: 20px;
    }

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

    .scenario-item:hover {
      border-color: var(--neon-purple);
      box-shadow: 0 10px 25px -5px rgba(139,92,246,0.12);
      transform: translateY(-3px);
    }

    .scenario-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
    }

    .scenario-icon {
      font-size: 1.25rem;
    }

    .scenario-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 模型支持标签云 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 10px 18px;
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .model-pill:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-blue);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(6,182,212,0.15);
    }

    .model-indicator {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--neon-emerald);
    }

    /* 对比评测表格与卡片 */
    .review-score-hero {
      background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
      border: 1px solid rgba(59,130,246,0.3);
      border-radius: var(--radius-lg);
      padding: 36px;
      text-align: center;
      box-shadow: var(--shadow-neon);
      margin-bottom: 30px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.75rem;
      letter-spacing: 4px;
      margin-bottom: 8px;
    }

    .score-value-big {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      background: var(--gradient-neon);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .score-max {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--text-light);
    }

    .score-summary-text {
      font-size: 1.125rem;
      color: var(--text-muted);
      margin-top: 12px;
      font-weight: 500;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9375rem;
    }

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

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

    .highlight-cell {
      background: rgba(59, 130, 246, 0.04);
      font-weight: 700;
      color: var(--neon-blue);
    }

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

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

    .step-box:hover {
      border-color: var(--neon-blue);
      transform: translateY(-4px);
    }

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

    .step-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例中心图文卡片 */
    .case-media-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;
    }

    .case-media-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(59,130,246,0.35);
    }

    .case-img-wrap {
      width: 100%;
      background: #f1f5f9;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap.aspect-square {
      aspect-ratio: 1 / 1;
    }

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

    .case-media-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    .case-content-wrap {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-tag {
      font-size: 0.75rem;
      color: var(--neon-purple);
      font-weight: 700;
      margin-bottom: 6px;
      display: block;
    }

    .case-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 用户评论 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-neon);
      transform: translateY(-3px);
    }

    .testimonial-body {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }

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

    .author-avatar-text {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-glow);
      border: 1px solid rgba(59,130,246,0.3);
      color: var(--neon-blue);
      font-weight: 800;
      font-size: 1.125rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .author-info h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    /* 需求匹配表单与联系区 */
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.9375rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: var(--bg-base);
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--neon-blue);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

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

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 16px;
      border-radius: var(--radius-md);
      background: #ffffff;
      border: 1px solid var(--border-color);
    }

    .contact-icon {
      font-size: 1.25rem;
      color: var(--neon-blue);
    }

    .contact-details h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .contact-details p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .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(59, 130, 246, 0.4);
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--neon-blue);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      padding: 0 22px;
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.65;
    }

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

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

    .faq-item.active .faq-answer {
      padding-bottom: 18px;
    }

    /* 行业资讯与文章 */
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 24px;
    }

    .article-link-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .article-link-card:hover {
      border-color: var(--neon-blue);
      color: var(--neon-blue);
      transform: translateX(3px);
    }

    /* 底部 Footer */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px 0;
      color: var(--text-muted);
    }

    .footer-main-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

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

    .footer-links-list a {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    .footer-links-list a:hover {
      color: var(--neon-blue);
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
      margin-bottom: 24px;
      align-items: center;
    }

    .friend-links-label {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .friend-links-wrap a {
      font-size: 0.875rem;
      color: var(--text-light);
      padding: 4px 10px;
      background: var(--bg-subtle);
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }

    .friend-links-wrap a:hover {
      color: var(--neon-blue);
      border-color: var(--neon-blue);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8125rem;
      color: var(--text-light);
    }

    /* 浮动客服挂件 */
    .floating-tools {
      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;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      font-size: 1.25rem;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      color: var(--neon-blue);
      border-color: var(--neon-blue);
      transform: translateY(-3px);
      box-shadow: var(--shadow-neon);
    }

    .float-qr-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 160px;
      padding: 12px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-neon);
      display: none;
      text-align: center;
    }

    .float-qr-popover p {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 6px;
      font-weight: 600;
    }

    .float-kefu-wrap:hover .float-qr-popover {
      display: block;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.25rem;
      }
      .grid-3, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: flex;
      }
      .nav-menu-wrap {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px 24px;
        box-shadow: var(--shadow-md);
      }
      .nav-menu-wrap.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
      }
      .nav-item {
        width: 100%;
      }
      .nav-item a {
        width: 100%;
        padding: 10px 0;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .grid-3, .grid-4, .process-timeline, .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .section-block {
        padding: 50px 0;
      }
    }