:root {
      --bg-base: #f4f6fb;
      --bg-card: #ffffff;
      --text-main: #141b2b;
      --text-muted: #56617a;
      --text-sub: #7a869e;
      --primary: #0066ff;
      --neon-cyan: #00e5ff;
      --neon-purple: #7928ca;
      --neon-pink: #ff007a;
      --neon-green: #00df89;
      --border-light: rgba(0, 102, 255, 0.12);
      --border-glow: rgba(0, 229, 255, 0.35);
      --shadow-soft: 0 10px 30px rgba(20, 27, 43, 0.05);
      --shadow-glow: 0 12px 35px rgba(0, 229, 255, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --container-max: 1240px;
      --transition: all 0.28s 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", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(0, 229, 255, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 90% 30%, rgba(255, 0, 122, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(0, 223, 137, 0.04) 0%, transparent 50%);
      background-attachment: fixed;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      color: var(--primary);
      background: rgba(0, 102, 255, 0.08);
      border: 1px solid rgba(0, 102, 255, 0.2);
      border-radius: 30px;
      margin-bottom: 12px;
      text-transform: uppercase;
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 102, 255, 0.1);
      transition: var(--transition);
    }

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

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

    .brand-box .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, #0052cc, #7928ca);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

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

    .nav-links a:hover {
      color: var(--primary);
      background: rgba(0, 102, 255, 0.05);
    }

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

    .btn-nav-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, #0066ff, #00c6ff);
      border-radius: 30px;
      border: none;
      box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
      cursor: pointer;
    }

    .btn-nav-primary:hover {
      box-shadow: 0 6px 20px rgba(0, 229, 255, 0.45);
      transform: translateY(-1px);
      color: #ffffff;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      color: var(--text-main);
    }

    /* Hero 首屏 - 严禁出现任何图片资源 */
    .hero-section {
      padding: 90px 0 70px;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(244, 246, 251, 0.3) 100%);
      border-bottom: 1px solid rgba(0, 102, 255, 0.08);
    }

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

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(0, 229, 255, 0.4);
      border-radius: 40px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #0052cc;
      margin-bottom: 24px;
      box-shadow: 0 4px 18px rgba(0, 229, 255, 0.12);
    }

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

    .hero-title {
      font-size: 2.6rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title .highlight {
      background: linear-gradient(135deg, #0052cc 0%, #7928ca 50%, #ff007a 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      text-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
    }

    .hero-subtitle {
      font-size: 1.15rem;
      line-height: 1.75;
      color: var(--text-muted);
      margin-bottom: 34px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .btn-hero-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #0066ff 0%, #7928ca 100%);
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(0, 102, 255, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-hero-main:hover {
      color: #ffffff;
      box-shadow: 0 10px 30px rgba(121, 40, 202, 0.45);
      transform: translateY(-2px);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid rgba(0, 102, 255, 0.2);
      border-radius: 40px;
      box-shadow: var(--shadow-soft);
    }

    .btn-hero-secondary:hover {
      background: rgba(0, 102, 255, 0.05);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .hero-highlight-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .chip-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 12px;
      font-size: 0.85rem;
      color: var(--text-muted);
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(20, 27, 43, 0.08);
      border-radius: 8px;
    }

    /* 首屏纯CSS控制面板组件 (非图片) */
    .hero-dashboard-preview {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(0, 229, 255, 0.3);
      padding: 24px;
      box-shadow: var(--shadow-glow);
      position: relative;
    }

    .dash-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(0, 102, 255, 0.08);
      margin-bottom: 16px;
    }

    .dash-dots {
      display: flex;
      gap: 6px;
    }

    .dash-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .dot-red { background: #ff5f56; }
    .dot-yellow { background: #ffbd2e; }
    .dot-green { background: #27c93f; }

    .dash-badge {
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 20px;
      background: rgba(0, 223, 137, 0.12);
      color: #008751;
      font-weight: 600;
    }

    .dash-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 16px;
    }

    .metric-card {
      background: rgba(244, 246, 251, 0.7);
      padding: 14px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(0, 102, 255, 0.06);
    }

    .metric-label {
      font-size: 0.8rem;
      color: var(--text-sub);
      margin-bottom: 4px;
    }

    .metric-value {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
    }

    .dash-node-flow {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .node-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(0, 102, 255, 0.12);
      font-size: 0.88rem;
    }

    .node-status {
      font-size: 0.75rem;
      color: #7928ca;
      font-weight: 600;
      background: rgba(121, 40, 202, 0.08);
      padding: 2px 8px;
      border-radius: 12px;
    }

    /* 平台核心指标栏目 */
    .stats-bar {
      padding: 30px 0;
      background: #ffffff;
      border-top: 1px solid rgba(0, 102, 255, 0.06);
      border-bottom: 1px solid rgba(0, 102, 255, 0.06);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .stat-box {
      text-align: center;
      padding: 10px;
      position: relative;
    }

    .stat-box:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(0, 102, 255, 0.1);
    }

    .stat-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 6px;
      background: linear-gradient(135deg, #0066ff, #00df89);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .stat-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    /* 通用卡片容器网格 */
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .card-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    /* 基础卡片样式 */
    .glass-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-soft);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--primary), var(--neon-purple));
      opacity: 0;
      transition: var(--transition);
    }

    .glass-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 36px rgba(0, 102, 255, 0.12);
      border-color: var(--border-glow);
    }

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

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 229, 255, 0.15));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.4rem;
      font-weight: 700;
    }

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

    .card-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .card-tag {
      display: inline-block;
      align-self: flex-start;
      margin-top: 18px;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
    }

    /* 多模型生态展示条 */
    .model-tags-container {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-soft);
      margin-top: 28px;
    }

    .model-tags-header {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

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

    .model-badge {
      font-size: 0.82rem;
      padding: 5px 12px;
      border-radius: 20px;
      background: rgba(244, 246, 251, 0.9);
      border: 1px solid rgba(20, 27, 43, 0.08);
      color: var(--text-main);
      font-weight: 500;
      transition: var(--transition);
    }

    .model-badge:hover {
      background: rgba(0, 102, 255, 0.08);
      color: var(--primary);
      border-color: var(--border-glow);
    }

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

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

    .step-number {
      font-size: 2rem;
      font-weight: 900;
      color: rgba(0, 102, 255, 0.15);
      line-height: 1;
      margin-bottom: 10px;
    }

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

    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .comparison-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-glow);
      padding: 32px;
      box-shadow: var(--shadow-glow);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding: 20px 24px;
      background: linear-gradient(135deg, rgba(0, 102, 255, 0.06), rgba(121, 40, 202, 0.06));
      border-radius: var(--radius-md);
      border: 1px solid rgba(0, 102, 255, 0.15);
      margin-bottom: 28px;
    }

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

    .score-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: #0052cc;
    }

    .score-max {
      font-size: 1.1rem;
      color: var(--text-sub);
    }

    .stars-box {
      font-size: 1.2rem;
      color: #ff9900;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

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

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      font-size: 0.95rem;
      border-bottom: 1px solid rgba(20, 27, 43, 0.08);
    }

    .comp-table th {
      background: rgba(244, 246, 251, 0.8);
      color: var(--text-main);
      font-weight: 700;
    }

    .highlight-col {
      background: rgba(0, 102, 255, 0.04);
      color: var(--primary);
      font-weight: 600;
    }

    .badge-check {
      color: var(--neon-green);
      font-weight: 800;
      margin-right: 6px;
    }

    /* 案例展示区图片卡片 */
    .case-media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .case-media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #eef2f8;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

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

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

    .case-tag {
      font-size: 0.78rem;
      color: #7928ca;
      font-weight: 600;
      margin-bottom: 8px;
    }

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

    .case-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      flex-grow: 1;
    }

    /* FAQ 折叠手风琴 */
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 960px;
      margin: 0 auto;
    }

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

    .faq-item.active {
      border-color: var(--border-glow);
      box-shadow: 0 4px 20px rgba(0, 102, 255, 0.08);
    }

    .faq-header {
      width: 100%;
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-body {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }

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

    /* 用户评论卡片 */
    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #ff9900;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }

    .review-content {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(20, 27, 43, 0.06);
      padding-top: 12px;
    }

    .user-avatar-initial {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, #0066ff, #00e5ff);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .user-details .name {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-details .role {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 需求匹配表单区 */
    .form-wrapper-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-glow);
      padding: 40px;
      box-shadow: var(--shadow-glow);
    }

    .form-info-col {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-item-box {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-top: 20px;
    }

    .contact-qr-img {
      max-width: 110px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(0, 102, 255, 0.15);
      padding: 4px;
      background: #ffffff;
    }

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

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

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      color: var(--text-main);
      background: rgba(244, 246, 251, 0.6);
      border: 1px solid rgba(0, 102, 255, 0.15);
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      background: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.12);
    }

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

    .btn-submit {
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #0066ff, #7928ca);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(0, 102, 255, 0.3);
      transition: var(--transition);
    }

    .btn-submit:hover {
      box-shadow: 0 8px 24px rgba(121, 40, 202, 0.4);
      transform: translateY(-2px);
    }

    /* 文章列表条目 */
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
    }

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

    .article-item-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .article-item-url {
      font-size: 0.8rem;
      color: var(--primary);
      word-break: break-all;
    }

    /* 友情链接与通用尾部 */
    .friend-links-box {
      padding: 24px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      margin-bottom: 40px;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

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

    .links-tags-wrap a {
      font-size: 0.88rem;
      color: var(--text-muted);
      padding: 4px 10px;
      background: rgba(244, 246, 251, 0.8);
      border-radius: 6px;
      border: 1px solid rgba(20, 27, 43, 0.05);
    }

    .links-tags-wrap a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid rgba(0, 102, 255, 0.1);
      padding: 50px 0 30px;
      color: var(--text-muted);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-list a {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(20, 27, 43, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 0.88rem;
    }

    /* 浮动客服挂件 */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .btn-float {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-glow);
      box-shadow: 0 6px 20px rgba(0, 102, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--primary);
      cursor: pointer;
      transition: var(--transition);
    }

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

    /* 响应式断点适配 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .card-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-wrapper-grid {
        grid-template-columns: 1fr;
      }
      .article-links-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 20px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .card-grid-3, .card-grid-4, .card-grid-2, .process-timeline, .article-links-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .stat-box:not(:last-child)::after {
        display: none;
      }
    }