/* roulang page: index */
:root {
      --primary: #00F0A8;
      --primary-hover: #05E599;
      --primary-glow: rgba(0, 240, 168, 0.25);
      --bg-dark: #0D1117;
      --surface: #161B22;
      --surface-border: rgba(255, 255, 255, 0.08);
      --text-main: #E6EDF3;
      --text-muted: #8B949E;
      --text-dim: #64748B;
      --sidebar-w: 250px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; border-radius: 6px; }

    /* 全局布局骨架 */
    .app-layout { display: flex; min-height: 100vh; }
    .app-sidebar {
      width: var(--sidebar-w);
      background: #090D13;
      border-right: 1px solid var(--surface-border);
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      z-index: 100;
      display: flex;
      flex-direction: column;
      padding: 24px 16px;
    }
    .app-main {
      margin-left: var(--sidebar-w);
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
    }

    /* 侧边栏元素 */
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--surface-border);
      margin-bottom: 24px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: rgba(0, 240, 168, 0.1);
      border: 1px solid var(--primary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 1.2rem;
    }
    .brand-text { font-size: 1.25rem; font-weight: 700; color: #FFF; letter-spacing: 0.5px; }
    .nav-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
    .nav-item a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      border-radius: 6px;
      color: var(--text-muted);
      font-size: 0.95rem;
      border: 1px solid transparent;
    }
    .nav-item a:hover {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      border-color: var(--surface-border);
    }
    .nav-item.active a {
      background: rgba(0, 240, 168, 0.08);
      color: var(--primary);
      border-color: rgba(0, 240, 168, 0.3);
      font-weight: 600;
    }
    .sidebar-footer {
      margin-top: auto;
      padding-top: 16px;
      border-top: 1px solid var(--surface-border);
      font-size: 0.8rem;
      color: var(--text-dim);
    }
    .status-indicator {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }

    /* 移动端顶栏 */
    .mobile-header {
      display: none;
      background: #090D13;
      border-bottom: 1px solid var(--surface-border);
      padding: 14px 20px;
      position: sticky;
      top: 0;
      z-index: 110;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-toggle {
      background: none;
      border: 1px solid var(--surface-border);
      color: var(--text-main);
      font-size: 1.2rem;
      padding: 6px 10px;
      border-radius: 4px;
      cursor: pointer;
    }

    /* 通用组件 */
    .section-wrap {
      padding: 64px 36px;
      border-bottom: 1px solid var(--surface-border);
    }
    .section-header {
      margin-bottom: 32px;
    }
    .section-tag {
      color: var(--primary);
      font-family: monospace;
      font-size: 0.85rem;
      margin-bottom: 8px;
      display: block;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 12px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      max-width: 820px;
      line-height: 1.7;
    }
    .card-panel {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 24px;
      transition: all 0.2s ease;
      height: 100%;
    }
    .card-panel:hover {
      border-color: rgba(0, 240, 168, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    }
    .btn-primary {
      background: var(--primary);
      color: #090D13;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      border: 1px solid var(--primary);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #090D13;
      box-shadow: 0 0 16px var(--primary-glow);
    }
    .btn-outline {
      background: transparent;
      color: var(--text-main);
      border: 1px solid var(--surface-border);
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
    }
    .btn-outline:hover {
      border-color: var(--text-main);
      color: #FFF;
      background: rgba(255, 255, 255, 0.05);
    }

    /* 板块 1: Hero 视频官网样式 */
    .hero-video-box {
      position: relative;
      min-height: 540px;
      background: url('/assets/images/dd194dab004871c0.jpg') center/cover no-repeat;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--surface-border);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 48px;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(13,17,23,0.3) 0%, rgba(13,17,23,0.92) 80%, #0D1117 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }
    .hero-title {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.25;
      color: #FFF;
      margin-bottom: 16px;
    }
    .hero-intro {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }

    /* 板块 2: 问题陈述 */
    .problem-matrix {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }
    .problem-item {
      background: rgba(255,255,255,0.02);
      border-left: 3px solid #EF4444;
      padding: 20px;
      border-radius: 0 6px 6px 0;
    }
    .problem-title { font-weight: 700; color: #FFF; margin-bottom: 8px; font-size: 1.05rem; }

    /* 板块 3: 操作演示 */
    .demo-screen {
      background: #090D13;
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      overflow: hidden;
    }
    .demo-bar {
      background: #161B22;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--surface-border);
    }
    .demo-dot { width: 10px; height: 10px; border-radius: 50%; background: #484F58; }
    .demo-body { padding: 24px; font-family: monospace; font-size: 0.9rem; color: #A5D6FF; }

    /* 板块 4: 结果预览 */
    .stat-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .stat-card {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 24px;
      border-radius: 6px;
      text-align: center;
    }
    .stat-val { font-size: 2.2rem; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
    .stat-lbl { color: var(--text-muted); font-size: 0.85rem; }

    /* 板块 5: 核心功能分组 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    /* 板块 6: 常见卡住点 (异议拆解) */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 20px;
      border-radius: 6px;
    }
    .faq-q { color: #FFF; font-weight: 600; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }

    /* 板块 7: 成功路径 */
    .step-track {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-node {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 24px;
      border-radius: 6px;
      position: relative;
    }
    .step-idx {
      font-size: 1.8rem;
      font-weight: 800;
      color: rgba(0, 240, 168, 0.4);
      margin-bottom: 8px;
      font-family: monospace;
    }

    /* 板块 8: 规格对比 */
    .price-table-wrap { overflow-x: auto; }
    .price-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .price-table th, .price-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--surface-border);
    }
    .price-table th { background: #161B22; color: #FFF; }
    .price-table tr:hover td { background: rgba(255,255,255,0.02); }

    /* 板块 9: 评价墙 */
    .quote-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .quote-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      font-size: 0.85rem;
    }
    .quote-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #2D333B;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
    }

    /* 板块 10: 资讯列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .news-card {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-thumb { height: 180px; width: 100%; object-fit: cover; }
    .news-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
    .news-meta { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 8px; }
    .news-title { font-size: 1.05rem; font-weight: 700; color: #FFF; margin-bottom: 10px; line-height: 1.4; }
    .news-desc { color: var(--text-muted); font-size: 0.88rem; line-height: 1.6; margin-bottom: 16px; flex: 1; }
    .news-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; }

    /* 板块 11: 启动引导 */
    .cta-banner {
      background: linear-gradient(135deg, rgba(0, 240, 168, 0.08) 0%, rgba(22, 27, 34, 0.9) 100%);
      border: 1px solid rgba(0, 240, 168, 0.3);
      padding: 48px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    /* 页脚 */
    .site-footer {
      background: #090D13;
      padding: 40px 36px;
      border-top: 1px solid var(--surface-border);
      font-size: 0.85rem;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .app-sidebar { display: none; }
      .app-sidebar.is-open { display: flex; width: 260px; }
      .app-main { margin-left: 0; }
      .mobile-header { display: flex; }
      .stat-strip, .grid-3, .step-track, .quote-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-title { font-size: 2rem; }
      .cta-banner { flex-direction: column; text-align: left; align-items: flex-start; }
    }
    @media (max-width: 640px) {
      .section-wrap { padding: 40px 20px; }
      .stat-strip, .grid-3, .step-track, .quote-grid, .news-grid, .faq-grid { grid-template-columns: 1fr; }
      .hero-video-box { padding: 24px; min-height: 420px; }
      .hero-title { font-size: 1.6rem; }
    }

/* roulang page: article */
:root {
      --primary: #00F0A8;
      --primary-hover: #05E599;
      --primary-glow: rgba(0, 240, 168, 0.25);
      --bg-dark: #0D1117;
      --surface: #161B22;
      --surface-border: rgba(255, 255, 255, 0.08);
      --text-main: #E6EDF3;
      --text-muted: #8B949E;
      --text-dim: #64748B;
      --sidebar-w: 250px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; border-radius: 6px; }

    .site-layout {
      display: flex;
      min-height: 100vh;
      width: 100%;
    }
    .app-sidebar {
      width: var(--sidebar-w);
      background: #090D13;
      border-right: 1px solid var(--surface-border);
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      padding: 24px 16px;
      display: flex;
      flex-direction: column;
      z-index: 100;
      overflow-y: auto;
    }
    .app-main {
      margin-left: var(--sidebar-w);
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
      background-color: var(--bg-dark);
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--surface-border);
      margin-bottom: 24px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: rgba(0, 240, 168, 0.1);
      border: 1px solid var(--primary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 1.2rem;
    }
    .brand-text { font-size: 1.25rem; font-weight: 700; color: #FFF; letter-spacing: 0.5px; }

    .nav-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
    .nav-item a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      border-radius: 6px;
      color: var(--text-muted);
      font-size: 0.95rem;
      border: 1px solid transparent;
    }
    .nav-item a:hover {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      border-color: var(--surface-border);
    }
    .nav-item.active a {
      background: rgba(0, 240, 168, 0.08);
      color: var(--primary);
      border-color: rgba(0, 240, 168, 0.3);
      font-weight: 600;
    }

    .sidebar-status-box {
      margin-top: auto;
      padding: 14px;
      background: rgba(255,255,255,0.02);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      font-size: 0.8rem;
    }
    .status-dot-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      margin-right: 6px;
      box-shadow: 0 0 8px var(--primary);
    }

    .mobile-header {
      display: none;
      background: #090D13;
      border-bottom: 1px solid var(--surface-border);
      padding: 14px 20px;
      position: sticky;
      top: 0;
      z-index: 110;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-toggle {
      background: none;
      border: 1px solid var(--surface-border);
      color: var(--text-main);
      font-size: 1.2rem;
      padding: 6px 10px;
      border-radius: 4px;
      cursor: pointer;
    }

    .section-wrap {
      padding: 56px 40px;
      border-bottom: 1px solid var(--surface-border);
    }
    .article-container {
      max-width: 920px;
      margin: 0 auto;
    }

    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--text-dim);
      margin-bottom: 20px;
    }
    .breadcrumb-nav a { color: var(--text-muted); }
    .breadcrumb-nav a:hover { color: var(--primary); }
    .breadcrumb-sep { font-size: 0.75rem; }

    .article-h1 {
      font-size: 2.3rem;
      font-weight: 700;
      color: #FFF;
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 18px;
      padding: 14px 18px;
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 32px;
    }
    .meta-item { display: flex; align-items: center; gap: 6px; }
    .meta-tag {
      color: var(--primary);
      background: rgba(0, 240, 168, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid rgba(0, 240, 168, 0.2);
    }

    .lead-summary-card {
      background: rgba(0, 240, 168, 0.03);
      border: 1px solid rgba(0, 240, 168, 0.25);
      border-left: 4px solid var(--primary);
      border-radius: 0 6px 6px 0;
      padding: 24px;
      margin-bottom: 40px;
    }
    .lead-summary-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .lead-summary-text {
      color: var(--text-main);
      font-size: 1rem;
      line-height: 1.75;
    }

    .article-body-content {
      font-size: 1.05rem;
      line-height: 1.85;
      color: #D1D5DB;
    }
    .article-body-content p { margin-bottom: 24px; }
    .article-body-content h2 {
      font-size: 1.6rem;
      font-weight: 700;
      color: #FFF;
      margin: 44px 0 20px;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--surface-border);
      position: relative;
    }
    .article-body-content h2::before {
      content: '// ';
      color: var(--primary);
      font-family: monospace;
    }
    .article-body-content h3 {
      font-size: 1.25rem;
      font-weight: 600;
      color: #FFF;
      margin: 30px 0 16px;
    }
    .article-body-content ul, .article-body-content ol {
      margin-bottom: 24px;
      padding-left: 24px;
      color: var(--text-muted);
    }
    .article-body-content li { margin-bottom: 8px; }
    .article-body-content blockquote {
      border-left: 3px solid var(--text-dim);
      padding: 14px 20px;
      background: var(--surface);
      border-radius: 0 6px 6px 0;
      color: var(--text-muted);
      margin-bottom: 24px;
      font-style: italic;
    }

    .callout-panel {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 24px;
      margin: 40px 0;
      display: flex;
      gap: 20px;
      align-items: flex-start;
    }
    .callout-icon {
      font-size: 1.8rem;
      color: var(--primary);
      flex-shrink: 0;
      line-height: 1;
    }
    .callout-heading {
      font-size: 1.1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 8px;
    }
    .callout-p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .tag-cluster-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      padding: 24px 0;
      border-top: 1px solid var(--surface-border);
      border-bottom: 1px solid var(--surface-border);
      margin: 40px 0;
    }
    .tag-cluster-label { font-size: 0.85rem; color: var(--text-dim); font-weight: 600; }
    .tag-pill {
      font-size: 0.85rem;
      color: var(--text-muted);
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 4px 12px;
      border-radius: 4px;
    }
    .tag-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .author-dossier {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 24px;
      margin-bottom: 40px;
    }
    .author-avatar-img {
      width: 72px;
      height: 72px;
      border-radius: 50%;
      border: 2px solid var(--primary);
      object-fit: cover;
      flex-shrink: 0;
    }
    .author-name { font-size: 1.1rem; font-weight: 700; color: #FFF; margin-bottom: 4px; }
    .author-role { font-size: 0.85rem; color: var(--primary); margin-bottom: 8px; }
    .author-bio { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .recommend-card {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
    }
    .recommend-card:hover {
      border-color: rgba(0, 240, 168, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    }
    .recommend-badge {
      font-size: 0.75rem;
      color: var(--primary);
      font-family: monospace;
      margin-bottom: 8px;
      display: inline-block;
    }
    .recommend-title {
      font-size: 1rem;
      font-weight: 600;
      color: #FFF;
      line-height: 1.5;
      margin-bottom: 12px;
    }
    .recommend-footer {
      font-size: 0.8rem;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--surface-border);
      padding-top: 10px;
      margin-top: 10px;
    }

    .feedback-dock {
      background: linear-gradient(180deg, var(--surface) 0%, rgba(22, 27, 34, 0.6) 100%);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 32px;
      text-align: center;
      margin-top: 20px;
    }
    .feedback-title { font-size: 1.3rem; font-weight: 700; color: #FFF; margin-bottom: 8px; }
    .feedback-desc { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 24px; max-width: 600px; margin-left: auto; margin-right: auto; }
    .feedback-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

    .btn-primary {
      background: var(--primary);
      color: #090D13;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      border: 1px solid var(--primary);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #090D13;
      box-shadow: 0 0 16px var(--primary-glow);
    }
    .btn-outline {
      background: transparent;
      color: var(--text-main);
      border: 1px solid var(--surface-border);
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
    }
    .btn-outline:hover {
      border-color: var(--text-main);
      color: #FFF;
      background: rgba(255, 255, 255, 0.05);
    }

    .empty-alert-wrap {
      padding: 80px 20px;
      text-align: center;
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
    }
    .empty-alert-title { font-size: 1.4rem; color: #FFF; margin-bottom: 12px; }
    .empty-alert-p { color: var(--text-muted); margin-bottom: 24px; }

    .site-footer {
      padding: 32px 40px;
      border-top: 1px solid var(--surface-border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      background: #090D13;
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    @media (max-width: 1024px) {
      .app-sidebar { display: none; }
      .app-main { margin-left: 0; }
      .mobile-header { display: flex; }
      .mobile-nav-panel {
        display: none;
        background: #090D13;
        border-bottom: 1px solid var(--surface-border);
        padding: 16px 20px;
      }
      .mobile-nav-panel.open { display: block; }
      .mobile-nav-panel .nav-list { gap: 10px; }
      .section-wrap { padding: 40px 20px; }
      .grid-3 { grid-template-columns: 1fr; }
    }

/* roulang page: category1 */
:root {
      --primary: #00F0A8;
      --primary-hover: #05E599;
      --primary-glow: rgba(0, 240, 168, 0.25);
      --bg-dark: #0D1117;
      --surface: #161B22;
      --surface-border: rgba(255, 255, 255, 0.08);
      --text-main: #E6EDF3;
      --text-muted: #8B949E;
      --text-dim: #64748B;
      --sidebar-w: 250px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; border-radius: 6px; }

    /* 左右布局容器 */
    .app-layout {
      display: flex;
      min-height: 100vh;
    }
    .app-sidebar {
      width: var(--sidebar-w);
      background: #0B0E14;
      border-right: 1px solid var(--surface-border);
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      display: flex;
      flex-direction: column;
      padding: 24px 16px;
      z-index: 100;
    }
    .app-main {
      margin-left: var(--sidebar-w);
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
    }

    /* 侧边栏元素 */
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--surface-border);
      margin-bottom: 24px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: rgba(0, 240, 168, 0.1);
      border: 1px solid var(--primary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 1.2rem;
    }
    .brand-text { font-size: 1.25rem; font-weight: 700; color: #FFF; letter-spacing: 0.5px; }
    .nav-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
    .nav-item a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      border-radius: 6px;
      color: var(--text-muted);
      font-size: 0.95rem;
      border: 1px solid transparent;
    }
    .nav-item a:hover {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      border-color: var(--surface-border);
    }
    .nav-item.active a {
      background: rgba(0, 240, 168, 0.08);
      color: var(--primary);
      border-color: rgba(0, 240, 168, 0.3);
      font-weight: 600;
    }
    .sidebar-footer {
      margin-top: auto;
      padding-top: 16px;
      border-top: 1px solid var(--surface-border);
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    /* 移动端顶栏 */
    .mobile-header {
      display: none;
      background: #090D13;
      border-bottom: 1px solid var(--surface-border);
      padding: 14px 20px;
      position: sticky;
      top: 0;
      z-index: 110;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-toggle {
      background: none;
      border: 1px solid var(--surface-border);
      color: var(--text-main);
      font-size: 1.2rem;
      padding: 6px 10px;
      border-radius: 4px;
      cursor: pointer;
    }

    /* 通用组件 */
    .section-wrap {
      padding: 56px 36px;
      border-bottom: 1px solid var(--surface-border);
    }
    .section-tag {
      color: var(--primary);
      font-family: monospace;
      font-size: 0.85rem;
      margin-bottom: 8px;
      display: block;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 1.65rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 12px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      max-width: 820px;
      line-height: 1.7;
    }
    .card-panel {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      padding: 24px;
      transition: all 0.2s ease;
      height: 100%;
    }
    .card-panel:hover {
      border-color: rgba(0, 240, 168, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    }
    .btn-primary {
      background: var(--primary);
      color: #090D13;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      border: 1px solid var(--primary);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #090D13;
      box-shadow: 0 0 16px var(--primary-glow);
    }
    .btn-outline {
      background: transparent;
      color: var(--text-main);
      border: 1px solid var(--surface-border);
      padding: 10px 22px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
    }
    .btn-outline:hover {
      border-color: var(--text-main);
      color: #FFF;
      background: rgba(255, 255, 255, 0.05);
    }

    /* 板块 1: 分类专区 H1 标题栏 */
    .cat-hero-banner {
      background: linear-gradient(180deg, #131922 0%, #0D1117 100%);
      padding: 48px 36px 40px;
      border-bottom: 1px solid var(--surface-border);
    }
    .cat-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      background: rgba(0, 240, 168, 0.1);
      border: 1px solid rgba(0, 240, 168, 0.3);
      color: var(--primary);
      font-size: 0.8rem;
      border-radius: 4px;
      margin-bottom: 16px;
      font-family: monospace;
    }
    .cat-h1 {
      font-size: 2.2rem;
      font-weight: 800;
      color: #FFF;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    /* 板块 2: 分类检索与筛选控制台 */
    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      justify-content: space-between;
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 14px 20px;
      border-radius: 6px;
    }
    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-btn {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--surface-border);
      color: var(--text-muted);
      padding: 6px 14px;
      border-radius: 4px;
      font-size: 0.85rem;
      cursor: pointer;
    }
    .filter-btn.active, .filter-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(0, 240, 168, 0.06);
    }
    .filter-search-box {
      display: flex;
      align-items: center;
      background: #0D1117;
      border: 1px solid var(--surface-border);
      padding: 6px 12px;
      border-radius: 4px;
      gap: 8px;
      font-size: 0.85rem;
    }
    .filter-search-box input {
      background: transparent;
      border: none;
      color: var(--text-main);
      outline: none;
      font-size: 0.85rem;
      margin-bottom: 0;
      box-shadow: none;
      height: auto;
      padding: 0;
    }

    /* 板块 4: 技术规格速查 */
    .spec-table-box {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      overflow-x: auto;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9rem;
      margin-bottom: 0;
      background: transparent;
      color: var(--text-main);
    }
    .spec-table th {
      background: rgba(255, 255, 255, 0.03);
      padding: 14px 18px;
      color: #FFF;
      font-weight: 600;
      border-bottom: 1px solid var(--surface-border);
    }
    .spec-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--surface-border);
      color: var(--text-muted);
    }
    .spec-table tr:last-child td { border-bottom: none; }
    .spec-val-high { color: var(--primary); font-family: monospace; font-weight: 600; }

    /* 板块 5: 场景落地适配指导 */
    .practice-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .practice-card {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      padding: 18px 20px;
      border-radius: 6px;
      display: flex;
      gap: 16px;
    }
    .practice-icon {
      font-size: 1.25rem;
      color: var(--primary);
      margin-top: 2px;
    }

    /* 板块 7: 资讯调用区 */
    .post-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .post-card {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: 6px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.2s ease;
    }
    .post-card:hover {
      border-color: rgba(0, 240, 168, 0.4);
      transform: translateY(-3px);
    }
    .post-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .post-meta {
      font-size: 0.75rem;
      color: var(--text-dim);
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }
    .post-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .post-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .post-link {
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 8: 底部行动收口 */
    .cta-cat-box {
      background: linear-gradient(135deg, rgba(0, 240, 168, 0.08) 0%, rgba(22, 27, 34, 0.6) 100%);
      border: 1px solid rgba(0, 240, 168, 0.3);
      padding: 40px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    /* 统一规范页脚 */
    .site-footer {
      padding: 32px 36px;
      border-top: 1px solid var(--surface-border);
      background: #090D13;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 移动端响应式 */
    @media (max-width: 1023px) {
      .app-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
      }
      .app-sidebar.is-open {
        transform: translateX(0);
      }
      .app-main {
        margin-left: 0;
      }
      .mobile-header {
        display: flex;
      }
      .section-wrap {
        padding: 40px 20px;
      }
      .post-grid {
        grid-template-columns: 1fr;
      }
    }