:root {
      --bg-base: #f7f9fd;
      --bg-surface: #ffffff;
      --bg-subtle: #edf2f9;
      --text-main: #0c182a;
      --text-secondary: #4a5b78;
      --text-muted: #798ba5;
      --neon-cyan: #00e5ff;
      --neon-purple: #8a2be2;
      --neon-blue: #0066ff;
      --neon-magenta: #ff007f;
      --neon-amber: #ff9900;
      --border-light: rgba(0, 102, 255, 0.12);
      --border-glow: rgba(0, 229, 255, 0.35);
      --shadow-soft: 0 10px 30px rgba(12, 24, 42, 0.05);
      --shadow-neon: 0 12px 35px rgba(0, 102, 255, 0.12), 0 0 20px rgba(0, 229, 255, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-max: 1200px;
      --transition-base: 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, "Helvetica Neue", Arial, "Noto Sans", 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% 15%, rgba(0, 229, 255, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(138, 43, 226, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #f8fbff 0%, #edf3fa 100%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      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, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 4px 20px rgba(0, 102, 255, 0.05);
    }

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

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

    .brand-logo-wrap {
      max-width: 160px;
      height: auto;
      display: flex;
      align-items: center;
    }

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

    .nav-item-link {
      padding: 8px 14px;
      font-size: 0.94rem;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
      transition: var(--transition-base);
    }

    .nav-item-link:hover {
      color: var(--neon-blue);
      background: rgba(0, 102, 255, 0.06);
    }

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

    .btn-neon-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, #0052ff 0%, #00d2ff 100%);
      border-radius: 30px;
      border: 1px solid rgba(255, 255, 255, 0.4);
      box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.4);
      transition: var(--transition-base);
      cursor: pointer;
    }

    .btn-neon-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(0, 210, 255, 0.45);
      color: #ffffff;
    }

    .btn-neon-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--border-glow);
      border-radius: 30px;
      box-shadow: 0 2px 10px rgba(0, 102, 255, 0.08);
      transition: var(--transition-base);
      cursor: pointer;
    }

    .btn-neon-outline:hover {
      border-color: var(--neon-blue);
      color: var(--neon-blue);
      background: #ffffff;
      transform: translateY(-2px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-light);
      padding: 8px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      color: var(--text-main);
    }

    /* Section 通用规范 */
    .section-spacing {
      padding: 72px 0;
      position: relative;
    }

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

    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--neon-blue);
      background: linear-gradient(90deg, rgba(0, 102, 255, 0.08), rgba(0, 229, 255, 0.12));
      padding: 6px 16px;
      border-radius: 20px;
      border: 1px solid rgba(0, 229, 255, 0.3);
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }

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

    /* 卡片体系 */
    .card-neon {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-soft);
      padding: 26px;
      transition: var(--transition-base);
      position: relative;
      overflow: hidden;
    }

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

    .card-neon:hover {
      transform: translateY(-5px);
      border-color: var(--border-glow);
      box-shadow: var(--shadow-neon);
    }

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

    /* 1. 首屏 Hero 区域 (严格无图片) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      overflow: hidden;
    }

    .hero-inner {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid rgba(0, 229, 255, 0.5);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--neon-blue);
      box-shadow: 0 4px 15px rgba(0, 229, 255, 0.15);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: #081226;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #081226 20%, #0044cc 70%, #00a2ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-secondary);
      max-width: 820px;
      margin: 0 auto 32px;
      line-height: 1.75;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 44px;
    }

    .hero-highlight-pills {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 20px;
    }

    .model-chip {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-light);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-secondary);
      box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    }

    .model-chip-active {
      background: linear-gradient(90deg, rgba(0, 102, 255, 0.08), rgba(0, 229, 255, 0.12));
      border-color: rgba(0, 229, 255, 0.4);
      color: #0055d4;
    }

    /* 数据指标条 */
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .metric-card {
      background: #ffffff;
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      text-align: center;
      box-shadow: var(--shadow-soft);
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: #0052ff;
      margin-bottom: 4px;
      line-height: 1.2;
    }

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

    /* 2. 关于我们 */
    .about-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: stretch;
    }

    .about-content-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 36px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .about-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      background: var(--bg-subtle);
      padding: 14px;
      border-radius: var(--radius-sm);
    }

    .about-feature-icon {
      color: var(--neon-blue);
      font-weight: bold;
      font-size: 1.1rem;
    }

    .about-meta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .about-meta-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-soft);
    }

    .about-meta-title {
      font-weight: 700;
      color: var(--text-main);
      font-size: 1.05rem;
      margin-bottom: 8px;
    }

    .about-meta-text {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 3. AIGC服务 & 4. 一站式制作 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-card-desc {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.65;
      margin-bottom: 16px;
    }

    .service-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .tag-chip {
      font-size: 0.76rem;
      background: rgba(0, 102, 255, 0.06);
      color: #0052ff;
      padding: 3px 10px;
      border-radius: 12px;
      font-weight: 500;
    }

    /* 5. 行业方案 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .solution-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-soft);
    }

    .solution-head {
      border-bottom: 1px solid var(--border-light);
      padding-bottom: 14px;
      margin-bottom: 14px;
    }

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

    /* 6. 服务网络 */
    .network-bar {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-soft);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }

    .network-item-val {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--neon-purple);
      margin-bottom: 6px;
    }

    /* 7. 标准流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .process-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-blue), var(--neon-cyan));
      color: #ffffff;
      font-weight: 800;
      margin: 0 auto 16px;
      box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
    }

    /* 8. 案例中心（含素材图） */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .case-media-wrap {
      background: #eef3fb;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-media-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-base);
    }

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

    .case-body {
      padding: 20px;
      flex: 1;
    }

    /* 宣传图展示专区 */
    .banner-showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 32px;
    }

    .banner-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-soft);
    }

    /* 9. 对比评测 */
    .eval-card-main {
      background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
      border: 2px solid rgba(0, 102, 255, 0.25);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-neon);
      margin-bottom: 30px;
    }

    .eval-score-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      border-bottom: 1px solid var(--border-light);
      padding-bottom: 24px;
      margin-bottom: 24px;
    }

    .eval-badge-score {
      font-size: 2.8rem;
      font-weight: 900;
      color: #0052ff;
      line-height: 1;
    }

    .eval-stars {
      color: #ffaa00;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .eval-table th, .eval-table td {
      padding: 14px 18px;
      border-bottom: 1px solid rgba(0, 102, 255, 0.08);
    }

    .eval-table th {
      background: #edf4fe;
      color: var(--text-main);
      font-weight: 700;
    }

    .eval-table tr:hover td {
      background: rgba(0, 229, 255, 0.03);
    }

    .cell-highlight {
      color: #0052ff;
      font-weight: 700;
    }

    /* 10. 需求匹配 & 16. 联系我们 (表单接入) */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-soft);
    }

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

    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #d2dceb;
      border-radius: var(--radius-sm);
      background: #fbfdff;
      color: var(--text-main);
      outline: none;
      transition: var(--transition-base);
    }

    .form-control:focus {
      border-color: var(--neon-blue);
      box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
      background: #ffffff;
    }

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

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-detail-row {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 12px;
      background: var(--bg-subtle);
      border-radius: var(--radius-sm);
    }

    .qr-box-center {
      text-align: center;
      padding: 20px;
      background: #f4f8fe;
      border-radius: var(--radius-md);
      border: 1px dashed rgba(0, 102, 255, 0.25);
    }

    .qr-img-wrapper {
      max-width: 140px;
      margin: 0 auto 10px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }

    /* 11. Token比价 */
    .token-table-wrap {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-soft);
    }

    /* 12. 帮助中心 & 14. AI百科 */
    .help-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    /* 13. FAQ 板块 */
    .faq-accordion-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-item.active {
      border-color: rgba(0, 102, 255, 0.4);
      box-shadow: 0 8px 24px rgba(0, 102, 255, 0.08);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      color: var(--text-main);
      font-size: 1.02rem;
      user-select: none;
    }

    .faq-icon-arrow {
      font-size: 1.1rem;
      transition: var(--transition-base);
      color: var(--neon-blue);
    }

    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.7;
      border-top: 1px solid #f0f4fa;
      padding-top: 14px;
    }

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

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

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

    .review-quote {
      font-size: 0.93rem;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #edf2f9;
      padding-top: 14px;
    }

    .user-avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #0052ff, #00d2ff);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
    }

    .user-name-title {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .user-role-label {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 15. 行业资讯与文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .article-link-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition-base);
    }

    .article-item-card:hover {
      border-color: var(--neon-blue);
      transform: translateX(4px);
      box-shadow: var(--shadow-soft);
    }

    /* 17. 加盟代理 */
    .agent-highlight-card {
      background: linear-gradient(135deg, #0d2146 0%, #173873 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: 0 15px 40px rgba(13, 33, 70, 0.25);
    }

    .agent-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }

    .agent-pills-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

    .agent-pill {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(0, 229, 255, 0.3);
      padding: 12px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
    }

    /* 友情链接与页脚 */
    .friend-links-bar {
      padding: 24px 0;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
      background: #ffffff;
      margin-top: 40px;
    }

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

    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-secondary);
      transition: var(--transition-base);
      background: var(--bg-subtle);
      padding: 4px 12px;
      border-radius: 4px;
    }

    .friend-links-list a:hover {
      color: var(--neon-blue);
      background: rgba(0, 102, 255, 0.08);
    }

    .site-footer {
      background: #081226;
      color: #8fa0be;
      padding: 48px 0 30px;
      font-size: 0.9rem;
    }

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

    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-links-col {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-col a {
      color: #8fa0be;
      transition: var(--transition-base);
    }

    .footer-links-col a:hover {
      color: #00e5ff;
    }

    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.84rem;
      color: #637799;
    }

    /* 悬浮客服挂件与返回顶部 */
    .floating-widget-group {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .fab-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-glow);
      box-shadow: 0 4px 16px rgba(0, 102, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--neon-blue);
      font-weight: bold;
      transition: var(--transition-base);
    }

    .fab-btn:hover {
      background: var(--neon-blue);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .services-grid, .case-gallery-grid, .help-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-grid, .process-timeline, .network-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links, .header-actions .btn-neon-outline {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .about-layout, .solution-grid, .contact-form-layout, .agent-grid, .articles-grid, .banner-showcase-grid {
        grid-template-columns: 1fr;
      }
      .services-grid, .case-gallery-grid, .help-grid, .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .metric-grid, .process-timeline, .network-bar {
        grid-template-columns: 1fr;
      }
      .footer-content-grid {
        grid-template-columns: 1fr;
      }
      .section-spacing {
        padding: 48px 0;
      }
    }