:root {
      --bg-main: #f6f9fc;
      --bg-card: #ffffff;
      --text-main: #141b2d;
      --text-muted: #55627a;
      --neon-cyan: #00f2fe;
      --neon-blue: #4facfe;
      --neon-pink: #f72585;
      --neon-purple: #7209b7;
      --accent-grad: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #7209b7 100%);
      --accent-warm: linear-gradient(135deg, #f72585 0%, #7209b7 100%);
      --border-light: rgba(79, 172, 254, 0.22);
      --border-glass: rgba(255, 255, 255, 0.7);
      --card-shadow: 0 10px 30px rgba(20, 27, 45, 0.05);
      --glow-shadow: 0 8px 24px rgba(79, 172, 254, 0.25);
      --max-w: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(0, 242, 254, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(247, 37, 133, 0.03) 0%, transparent 45%),
        radial-gradient(circle at 30% 80%, rgba(114, 9, 183, 0.04) 0%, transparent 40%);
      background-attachment: fixed;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }
    .nav-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;
    }
    .brand-title {
      font-size: 18px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #0f172a;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .brand-tag {
      font-size: 11px;
      padding: 2px 7px;
      border-radius: 99px;
      background: rgba(0, 242, 254, 0.15);
      color: #0077b6;
      font-weight: 700;
      border: 1px solid rgba(0, 242, 254, 0.35);
    }
    .nav-links {
      display: flex;
      gap: 0;
      align-items: center;
      list-style: none;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover {
      color: #0077b6;
      background: rgba(79, 172, 254, 0.08);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 600;
      color: #ffffff !important;
      border-radius: 99px;
      background: var(--accent-grad);
      box-shadow: 0 4px 14px rgba(0, 242, 254, 0.35);
      cursor: pointer;
      border: none;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 172, 254, 0.5);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
    }

    /* 区域公用标题 */
    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-eyebrow {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 99px;
      background: linear-gradient(90deg, rgba(0, 242, 254, 0.15), rgba(247, 37, 133, 0.15));
      color: #7209b7;
      margin-bottom: 12px;
      letter-spacing: 0.8px;
      border: 1px solid rgba(114, 9, 183, 0.15);
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Hero 首屏 - 严格无图，纯CSS/科技感几何/荧光渐变 */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }
    .hero-wrap {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .badge-capsule {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid rgba(0, 242, 254, 0.4);
      border-radius: 99px;
      font-size: 13px;
      font-weight: 600;
      color: #0284c7;
      box-shadow: 0 4px 12px rgba(0, 242, 254, 0.12);
      margin-bottom: 20px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: #00f2fe;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7); }
      70% { box-shadow: 0 0 0 10px rgba(0, 242, 254, 0); }
      100% { box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
    }
    .hero-title {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      color: #0b1329;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-title .glow-highlight {
      background: linear-gradient(135deg, #0077b6, #7209b7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }
    .hero-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      margin-bottom: 36px;
    }
    .btn-main-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 30px;
      font-size: 16px;
      font-weight: 700;
      color: #ffffff !important;
      border-radius: 12px;
      background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
      box-shadow: 0 8px 24px rgba(0, 210, 255, 0.4);
      border: none;
      transition: all 0.25s ease;
    }
    .btn-main-action:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px rgba(0, 210, 255, 0.55);
    }
    .btn-sub-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 26px;
      font-size: 15px;
      font-weight: 600;
      color: #0f172a;
      border-radius: 12px;
      background: #ffffff;
      border: 1px solid rgba(79, 172, 254, 0.3);
      box-shadow: var(--card-shadow);
    }
    .btn-sub-action:hover {
      background: rgba(79, 172, 254, 0.05);
      border-color: #4facfe;
    }

    /* 首屏右侧纯CSS科技仪表盘 */
    .hero-tech-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 45px rgba(79, 172, 254, 0.12);
      position: relative;
      overflow: hidden;
    }
    .hero-tech-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--accent-grad);
    }
    .tech-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      margin-bottom: 16px;
      border-bottom: 1px dashed rgba(79, 172, 254, 0.2);
    }
    .tech-status {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 700;
      color: #059669;
      background: rgba(16, 185, 129, 0.1);
      padding: 3px 10px;
      border-radius: 99px;
    }
    .engine-matrix {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 18px;
    }
    .engine-item {
      background: #f8fafc;
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-md);
      padding: 12px 14px;
    }
    .engine-name {
      font-size: 13px;
      font-weight: 700;
      color: #1e293b;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .engine-tag {
      font-size: 10px;
      padding: 2px 6px;
      border-radius: 4px;
      background: rgba(0, 242, 254, 0.15);
      color: #0284c7;
    }
    .engine-desc {
      font-size: 11px;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .token-bar-box {
      background: linear-gradient(135deg, rgba(0, 242, 254, 0.08), rgba(114, 9, 183, 0.05));
      border: 1px solid rgba(0, 242, 254, 0.25);
      border-radius: var(--radius-md);
      padding: 14px;
    }
    .token-bar-label {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 8px;
    }

    /* 模块：数据指标 */
    .stats-section {
      padding: 20px 0 60px;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
    }
    .stat-num {
      font-size: 32px;
      font-weight: 800;
      background: var(--accent-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }
    .stat-title {
      font-size: 14px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 4px;
    }
    .stat-detail {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 模块通用样式 */
    .content-section {
      padding: 60px 0;
    }
    .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: 24px;
    }

    /* 平台介绍 */
    .about-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
    }
    .about-features {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }
    .feat-item {
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .feat-item h4 {
      font-size: 15px;
      color: #0f172a;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feat-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 场景与能力卡片 */
    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scene-card:hover {
      transform: translateY(-4px);
      border-color: #00f2fe;
      box-shadow: var(--glow-shadow);
    }
    .scene-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      color: #7209b7;
      background: rgba(114, 9, 183, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
      width: fit-content;
    }
    .scene-card h3 {
      font-size: 17px;
      color: #0f172a;
      margin-bottom: 8px;
      font-weight: 700;
    }
    .scene-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 聚合模型徽章标签栏 */
    .model-tags-box {
      margin-top: 30px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--card-shadow);
    }
    .model-tags-title {
      font-size: 14px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-pill {
      font-size: 12px;
      padding: 5px 12px;
      background: #f1f5f9;
      border-radius: 99px;
      color: #334155;
      font-weight: 500;
      border: 1px solid rgba(203, 213, 225, 0.6);
      transition: all 0.2s;
    }
    .tag-pill:hover {
      background: rgba(0, 242, 254, 0.15);
      border-color: #00f2fe;
      color: #0284c7;
    }

    /* 流程与网络 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .process-node {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .node-num {
      font-size: 12px;
      font-weight: 800;
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--accent-grad);
      color: #ffffff;
      border-radius: 50%;
      margin-bottom: 12px;
    }
    .node-title {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .node-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例图片区域 */
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      aspect-ratio: 16/9;
      background: #f1f5f9;
      overflow: hidden;
      position: relative;
    }
    .case-img-wrap.square {
      aspect-ratio: 1/1;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }
    .case-info {
      padding: 18px;
      flex-grow: 1;
    }
    .case-info h4 {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }
    .case-info p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 评测与对比表格 */
    .compare-wrap {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--card-shadow);
    }
    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, rgba(0, 242, 254, 0.12), rgba(247, 37, 133, 0.08));
      border: 1px solid rgba(0, 242, 254, 0.3);
      padding: 18px 24px;
      border-radius: var(--radius-md);
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 12px;
    }
    .rating-left {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-badge {
      font-size: 32px;
      font-weight: 900;
      color: #0284c7;
      line-height: 1;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 2px;
    }
    .table-container {
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 14px 16px;
      border-bottom: 1px solid #f1f5f9;
    }
    .compare-table th {
      background: #f8fafc;
      color: #475569;
      font-weight: 700;
    }
    .compare-table tr:hover {
      background: #fafcff;
    }
    .highlight-col {
      color: #0284c7;
      font-weight: 700;
      background: rgba(0, 242, 254, 0.03);
    }

    /* 用户评论 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-text {
      font-size: 13px;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }
    .user-info {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .user-avatar-dot {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--accent-grad);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 14px;
    }
    .user-meta h5 {
      font-size: 14px;
      color: #0f172a;
      font-weight: 700;
    }
    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 列表（详情折叠） */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .faq-header {
      width: 100%;
      padding: 16px 20px;
      text-align: left;
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-icon {
      font-size: 18px;
      color: #0284c7;
      transition: transform 0.25s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-body {
      padding: 0 20px 16px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }

    /* 表单与服务对接 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 30px;
    }
    .contact-panel {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--card-shadow);
    }
    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
      color: #334155;
    }
    .contact-item strong {
      color: #0f172a;
      min-width: 80px;
    }
    .qr-showcase {
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .qr-showcase img {
      width: 90px;
      height: 90px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
    }
    .qr-text h5 {
      font-size: 14px;
      color: #0f172a;
      margin-bottom: 4px;
    }
    .qr-text p {
      font-size: 12px;
      color: var(--text-muted);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      font-size: 14px;
      color: #0f172a;
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: #00f2fe;
      box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.2);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .btn-submit {
      width: 100%;
      padding: 13px;
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      background: var(--accent-grad);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(0, 242, 254, 0.35);
      transition: all 0.2s;
    }
    .btn-submit:hover {
      box-shadow: 0 8px 22px rgba(79, 172, 254, 0.5);
    }

    /* 资讯与友情链接 */
    .article-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--card-shadow);
    }
    .article-title {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: 1px solid #f1f5f9;
    }
    .article-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
    }
    .article-list a {
      font-size: 13px;
      color: #0284c7;
      background: #f0f9ff;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(0, 242, 254, 0.25);
    }
    .article-list a:hover {
      background: #0284c7;
      color: #ffffff;
    }

    /* 尾部统一主容器 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 48px 0 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr;
      gap: 30px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand h4 {
      color: #f8fafc;
      font-size: 18px;
      margin-bottom: 10px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.6;
      max-width: 360px;
    }
    .footer-links h5, .footer-channel h5 {
      color: #f8fafc;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
      list-style: none;
    }
    .footer-links-list a {
      font-size: 13px;
      color: #94a3b8;
    }
    .footer-links-list a:hover {
      color: #00f2fe;
    }
    .footer-channel-info {
      font-size: 13px;
      line-height: 1.8;
    }
    .footer-links-group {
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 12px;
    }
    .footer-links-group strong {
      color: #cbd5e1;
    }
    .footer-links-group a {
      color: #94a3b8;
      transition: color 0.2s;
    }
    .footer-links-group a:hover {
      color: #00f2fe;
    }
    .footer-bottom {
      margin-top: 24px;
      text-align: center;
      font-size: 12px;
      color: #64748b;
    }

    /* 悬浮客服面板 */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-light);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #0284c7;
      position: relative;
      transition: transform 0.2s;
    }
    .float-btn:hover {
      transform: scale(1.08);
    }
    .float-qr-card {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 14px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
      display: none;
      width: 160px;
      text-align: center;
    }
    .float-btn:hover .float-qr-card {
      display: block;
    }
    .float-qr-card img {
      width: 130px;
      height: 130px;
      margin: 0 auto 6px;
    }
    .float-qr-card span {
      font-size: 12px;
      color: #334155;
      font-weight: 600;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .hero-wrap { grid-template-columns: 1fr; gap: 30px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 16px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .mobile-menu-btn { display: block; }
      .hero-title { font-size: 28px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .card-grid-3 { grid-template-columns: 1fr; }
      .card-grid-2 { grid-template-columns: 1fr; }
      .card-grid-4 { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .about-features { grid-template-columns: 1fr; }
    }