/* roulang page: index */
:root {
      --bg-primary: #070b14;
      --bg-secondary: #0d1527;
      --bg-glass: rgba(13, 21, 39, 0.72);
      --border-glass: rgba(0, 210, 255, 0.16);
      --border-glow: rgba(0, 210, 255, 0.45);
      --primary-cyan: #00f5d4;
      --primary-blue: #00d2ff;
      --accent-amber: #ff7a00;
      --text-white: #ffffff;
      --text-muted: #94a3b8;
      --text-sub: #cbd5e1;
      --container-w: 1240px;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition-norm: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-primary);
      color: var(--text-white);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    .container {
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-glass);
      padding: 16px 0;
    }
    .header-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-white);
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-cyan);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary-cyan);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .nav-link-sub {
      color: var(--text-muted);
      font-size: 0.95rem;
      font-weight: 500;
    }
    .nav-link-sub:hover {
      color: var(--primary-cyan);
    }

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      background: linear-gradient(135deg, var(--primary-blue), #0070f3);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 0 16px rgba(0, 210, 255, 0.35);
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 210, 255, 0.6);
      color: #fff;
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-sub);
      font-weight: 500;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-glass);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.3);
    }

    .section-wrap {
      padding: 84px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.7;
      max-width: 820px;
    }

    .hero-section {
      padding: 96px 0 80px;
      background: linear-gradient(180deg, rgba(7, 11, 20, 0.6) 0%, rgba(7, 11, 20, 0.95) 100%), url('/assets/images/75e41de4253f733a.webp') center/cover no-repeat;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 56px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      background: linear-gradient(90deg, #ffffff 40%, var(--primary-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-text {
      color: var(--text-sub);
      font-size: 1.12rem;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-btns {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .data-pill-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
    }
    .data-pill-item strong {
      display: block;
      font-size: 1.5rem;
      color: var(--primary-cyan);
      font-family: monospace;
    }
    .data-pill-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .hero-panel-card {
      background: var(--bg-glass);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .panel-header-badge {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(0, 245, 212, 0.1);
      border: 1px solid rgba(0, 245, 212, 0.3);
      color: var(--primary-cyan);
      font-size: 0.8rem;
      border-radius: 4px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .panel-metrics-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .metric-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .metric-name {
      color: var(--text-sub);
      font-size: 0.95rem;
    }
    .metric-score {
      font-weight: 700;
      color: var(--accent-amber);
      font-family: monospace;
      font-size: 1.15rem;
    }

    .glass-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition-norm);
    }
    .glass-card:hover {
      border-color: var(--border-glow);
      box-shadow: 0 12px 32px rgba(0, 210, 255, 0.12);
      transform: translateY(-3px);
    }

    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .matrix-title {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--text-white);
    }
    .matrix-desc {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-glass);
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      text-align: left;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .compare-table th {
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-sub);
      font-weight: 600;
    }
    .compare-table td:nth-child(2) {
      color: #ef4444;
    }
    .compare-table td:nth-child(3) {
      color: var(--primary-cyan);
      font-weight: 600;
    }

    .timeline-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .timeline-node {
      position: relative;
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      padding: 24px;
      border-radius: var(--radius-md);
    }
    .timeline-year {
      font-size: 1.4rem;
      font-family: monospace;
      font-weight: 700;
      color: var(--accent-amber);
      margin-bottom: 10px;
    }
    .timeline-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .article-item {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .article-thumb {
      height: 180px;
      background: #111a30;
      position: relative;
      overflow: hidden;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-norm);
    }
    .article-item:hover .article-thumb img {
      transform: scale(1.05);
    }
    .article-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .article-meta {
      display: flex;
      justify-content: space-between;
      color: var(--text-muted);
      font-size: 0.82rem;
      margin-bottom: 12px;
    }
    .article-title {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 12px;
      line-height: 1.4;
      color: var(--text-white);
    }
    .article-title:hover {
      color: var(--primary-cyan);
    }
    .article-summary {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.6;
      margin-bottom: 20px;
      flex: 1;
    }
    .article-more {
      font-size: 0.88rem;
      color: var(--primary-blue);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .trust-card {
      border: 1px solid var(--border-glass);
      padding: 30px;
      border-radius: var(--radius-md);
      background: rgba(13, 21, 39, 0.4);
    }
    .trust-title {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--text-white);
    }
    .trust-desc {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scenario-pill {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      padding: 20px;
      border-radius: var(--radius-sm);
    }
    .scenario-pill strong {
      display: block;
      color: var(--primary-cyan);
      font-size: 1.05rem;
      margin-bottom: 6px;
    }
    .scenario-pill p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .portal-banner {
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.08), rgba(0, 245, 212, 0.04));
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 48px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 36px;
    }
    .portal-info h3 {
      font-size: 1.8rem;
      margin-bottom: 12px;
    }
    .portal-info p {
      color: var(--text-sub);
      font-size: 1rem;
      line-height: 1.6;
      max-width: 680px;
    }

    .spec-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .spec-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .spec-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary-blue);
      margin-bottom: 8px;
      font-family: monospace;
    }
    .spec-name {
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .spec-detail {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .form-panel {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 44px;
      max-width: 860px;
      margin: 0 auto;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      background: rgba(7, 11, 20, 0.8);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: #fff;
      font-size: 0.95rem;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary-cyan);
      box-shadow: 0 0 10px rgba(0, 245, 212, 0.2);
    }
    .form-actions {
      text-align: right;
      margin-top: 24px;
    }

    .site-footer {
      background: #04070d;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding: 64px 0 32px;
      color: #64748b;
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 16px;
    }
    .footer-desc {
      line-height: 1.7;
      max-width: 440px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-sub);
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
    }

    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .matrix-grid, .timeline-wrap, .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .article-grid, .trust-grid, .spec-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .matrix-grid, .timeline-wrap, .scenario-grid, .article-grid, .trust-grid, .spec-grid {
        grid-template-columns: 1fr;
      }
      .portal-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
    }

/* roulang page: article */
:root {
      --bg-primary: #070b14;
      --bg-secondary: #0d1527;
      --bg-glass: rgba(13, 21, 39, 0.72);
      --border-glass: rgba(0, 210, 255, 0.16);
      --border-glow: rgba(0, 210, 255, 0.45);
      --primary-cyan: #00f5d4;
      --primary-blue: #00d2ff;
      --accent-amber: #ff7a00;
      --text-white: #ffffff;
      --text-muted: #94a3b8;
      --text-sub: #cbd5e1;
      --container-w: 1240px;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition-norm: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-white);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-norm);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-glass);
      padding: 16px 0;
    }
    .header-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-white);
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-cyan);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary-cyan);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .nav-link-sub {
      color: var(--text-muted);
      font-size: 0.95rem;
      font-weight: 500;
    }
    .nav-link-sub:hover {
      color: var(--primary-cyan);
    }
    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      background: linear-gradient(135deg, var(--primary-blue), #0070f3);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 0 16px rgba(0, 210, 255, 0.35);
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 210, 255, 0.6);
      color: #fff;
    }
    .article-wrap {
      padding: 48px 0 88px;
    }
    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 760px) 380px;
      gap: 48px;
      align-items: start;
    }
    .main-column {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 40px;
    }
    .article-crumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .article-crumb a:hover {
      color: var(--primary-cyan);
    }
    .article-header {
      margin-bottom: 32px;
    }
    .article-category-badge {
      display: inline-block;
      padding: 4px 10px;
      background: rgba(0, 245, 212, 0.1);
      border: 1px solid rgba(0, 245, 212, 0.25);
      color: var(--primary-cyan);
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .article-h1 {
      font-size: 2.15rem;
      line-height: 1.35;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .article-meta-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 20px;
      font-size: 0.88rem;
      color: var(--text-muted);
      padding-bottom: 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .article-meta-row span {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .article-quote {
      margin: 28px 0 32px;
      padding: 20px 24px;
      background: rgba(0, 210, 255, 0.04);
      border-left: 3px solid var(--primary-cyan);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      color: var(--text-sub);
      font-size: 1.02rem;
      line-height: 1.8;
    }
    .article-hero-media {
      margin: 0 0 36px 0;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glass);
      background: #000;
    }
    .article-hero-media img {
      width: 100%;
      max-height: 420px;
      object-fit: cover;
    }
    .article-body {
      color: var(--text-sub);
      font-size: 1.05rem;
      line-height: 1.85;
      word-break: break-word;
    }
    .article-body p {
      margin-bottom: 24px;
    }
    .article-body h2 {
      font-size: 1.45rem;
      font-weight: 700;
      color: var(--text-white);
      margin: 36px 0 16px;
      padding-bottom: 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .article-body h3 {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--primary-blue);
      margin: 28px 0 12px;
    }
    .article-body ul, .article-body ol {
      margin: 0 0 24px 20px;
      padding-left: 10px;
    }
    .article-body li {
      margin-bottom: 10px;
    }
    .film-metrics-box {
      margin-top: 48px;
      padding: 24px;
      background: rgba(7, 11, 20, 0.7);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
    }
    .metrics-box-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-white);
      margin-bottom: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .metrics-score-badge {
      color: var(--accent-amber);
      font-family: monospace;
      font-weight: 700;
      font-size: 1.25rem;
    }
    .metrics-grid-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      text-align: center;
    }
    .metric-sub-item {
      padding: 12px;
      background: rgba(255, 255, 255, 0.02);
      border-radius: var(--radius-sm);
    }
    .metric-sub-item span {
      display: block;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .metric-sub-item strong {
      font-size: 0.95rem;
      color: var(--primary-cyan);
    }
    .article-notice-card {
      margin-top: 32px;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.02);
      border: 1px dashed rgba(255, 255, 255, 0.12);
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .sidebar-sticky {
      position: sticky;
      top: 96px;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .side-widget {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .widget-head {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 10px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .side-card-item {
      display: flex;
      gap: 14px;
      margin-bottom: 16px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .side-card-item:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }
    .side-card-img {
      width: 80px;
      height: 60px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      flex-shrink: 0;
      border: 1px solid var(--border-glass);
    }
    .side-card-info h4 {
      font-size: 0.9rem;
      line-height: 1.4;
      font-weight: 500;
      color: var(--text-sub);
      margin-bottom: 6px;
    }
    .side-card-item:hover .side-card-info h4 {
      color: var(--primary-cyan);
    }
    .side-card-info span {
      font-size: 0.78rem;
      color: var(--text-muted);
    }
    .side-promo-box {
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.12), rgba(0, 112, 243, 0.08));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      text-align: center;
    }
    .side-promo-box h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 10px;
    }
    .side-promo-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .empty-card {
      text-align: center;
      padding: 60px 20px;
    }
    .empty-card h2 {
      font-size: 1.5rem;
      margin-bottom: 16px;
      color: var(--text-white);
    }
    .empty-card p {
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-glass);
      padding: 64px 0 32px;
      margin-top: 48px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-white);
    }
    .footer-desc {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.7;
      max-width: 480px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 18px;
      color: var(--text-white);
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--primary-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      color: #475569;
      font-size: 0.82rem;
    }
    @media (max-width: 1024px) {
      .article-layout {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .main-column {
        padding: 24px 16px;
      }
      .article-h1 {
        font-size: 1.6rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
      }
      .metrics-grid-row {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category1 */
:root {
      --bg-primary: #070b14;
      --bg-secondary: #0d1527;
      --bg-glass: rgba(13, 21, 39, 0.72);
      --border-glass: rgba(0, 210, 255, 0.16);
      --border-glow: rgba(0, 210, 255, 0.45);
      --primary-cyan: #00f5d4;
      --primary-blue: #00d2ff;
      --accent-amber: #ff7a00;
      --text-white: #ffffff;
      --text-muted: #94a3b8;
      --text-sub: #cbd5e1;
      --container-w: 1240px;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition-norm: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-white);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-norm);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-glass);
      padding: 16px 0;
    }
    .header-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-white);
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-cyan);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary-cyan);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .nav-link-sub {
      color: var(--primary-cyan);
      font-size: 0.95rem;
      font-weight: 600;
    }
    .nav-link-sub:hover {
      color: #fff;
    }
    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      background: linear-gradient(135deg, var(--primary-blue), #0070f3);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 0 16px rgba(0, 210, 255, 0.35);
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 210, 255, 0.6);
      color: #fff;
    }

    /* Section Utility */
    .section-wrap {
      padding: 72px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-title {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 10px;
      letter-spacing: -0.3px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      line-height: 1.7;
      max-width: 820px;
    }
    .glass-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(14px);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition-norm);
    }
    .glass-card:hover {
      border-color: var(--border-glow);
      box-shadow: 0 10px 28px rgba(0, 210, 255, 0.12);
      transform: translateY(-3px);
    }

    /* 1. Category Bar */
    .cat-lead-bar {
      padding: 48px 0;
      background: linear-gradient(180deg, rgba(13, 21, 39, 0.8) 0%, rgba(7, 11, 20, 0.95) 100%), url('/assets/images/9dc8d94609743800.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--border-glass);
    }
    .cat-lead-flex {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 32px;
      flex-wrap: wrap;
    }
    .cat-lead-titles h1 {
      font-size: 2.25rem;
      font-weight: 800;
      margin-bottom: 12px;
      background: linear-gradient(90deg, #ffffff 40%, var(--primary-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .cat-lead-titles p {
      color: var(--text-sub);
      font-size: 1.05rem;
      max-width: 720px;
    }
    .cat-stats-row {
      display: flex;
      gap: 24px;
      background: rgba(7, 11, 20, 0.65);
      border: 1px solid var(--border-glass);
      padding: 14px 24px;
      border-radius: var(--radius-md);
    }
    .stat-pill strong {
      display: block;
      font-size: 1.35rem;
      color: var(--primary-cyan);
      font-family: monospace;
    }
    .stat-pill span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 2. Filter Bar */
    .filter-zone {
      padding: 20px 0;
      background: #090e1c;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .filter-line {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .filter-line:last-child {
      margin-bottom: 0;
    }
    .filter-tag-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      width: 64px;
      flex-shrink: 0;
    }
    .filter-tags-wrap {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .filter-chip {
      padding: 4px 14px;
      font-size: 0.85rem;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-sub);
      border: 1px solid rgba(255, 255, 255, 0.08);
      cursor: pointer;
      transition: var(--transition-norm);
    }
    .filter-chip.active, .filter-chip:hover {
      background: rgba(0, 210, 255, 0.15);
      border-color: var(--primary-blue);
      color: #fff;
    }

    /* 3. Poster Grid */
    .poster-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .poster-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-norm);
    }
    .poster-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(0, 210, 255, 0.15);
    }
    .poster-img-wrap {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #111a30;
    }
    .poster-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .poster-card:hover .poster-img-wrap img {
      transform: scale(1.04);
    }
    .poster-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(7, 11, 20, 0.85);
      border: 1px solid var(--accent-amber);
      color: var(--accent-amber);
      font-weight: 700;
      padding: 3px 8px;
      font-size: 0.85rem;
      border-radius: var(--radius-sm);
    }
    .poster-meta {
      padding: 18px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .poster-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
    }
    .poster-info-line {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      gap: 10px;
    }
    .poster-summary {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .poster-specs-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .spec-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 4px;
      color: var(--text-muted);
    }

    /* 4. Top 5 Cards */
    .top5-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .top5-item {
      display: grid;
      grid-template-columns: 80px 1.5fr 1fr 140px;
      align-items: center;
      gap: 20px;
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      padding: 18px 24px;
      border-radius: var(--radius-md);
      transition: var(--transition-norm);
    }
    .top5-item:hover {
      border-color: var(--border-glow);
      background: rgba(13, 21, 39, 0.85);
    }
    .top5-num {
      font-size: 2rem;
      font-weight: 900;
      font-family: monospace;
      color: var(--primary-cyan);
      line-height: 1;
    }
    .top5-detail h3 {
      font-size: 1.15rem;
      margin-bottom: 6px;
    }
    .top5-detail p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .top5-metric-bar {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .bar-bg {
      height: 6px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 3px;
      overflow: hidden;
    }
    .bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--primary-blue), var(--primary-cyan));
      border-radius: 3px;
    }
    .top5-score-box {
      text-align: right;
    }
    .top5-score-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent-amber);
    }
    .top5-score-txt {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 5. Curation Section */
    .curator-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .curator-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .curator-card h3 {
      font-size: 1.35rem;
      margin-bottom: 16px;
      color: var(--primary-cyan);
    }
    .curator-card p {
      color: var(--text-sub);
      font-size: 0.98rem;
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .curator-check-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .curator-check-list li {
      display: flex;
      gap: 10px;
      font-size: 0.92rem;
      color: var(--text-muted);
    }
    .curator-check-list li strong {
      color: #fff;
    }

    /* 6. Audio/Visual calibration */
    .calib-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .calib-box {
      background: rgba(7, 11, 20, 0.5);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .calib-icon {
      font-size: 1.5rem;
      color: var(--primary-blue);
      margin-bottom: 12px;
    }
    .calib-box h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: #fff;
    }
    .calib-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. CMS Section */
    .cms-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .cms-card {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-norm);
    }
    .cms-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-3px);
    }
    .cms-thumb {
      aspect-ratio: 16 / 9;
      background: #111a30;
      position: relative;
      overflow: hidden;
    }
    .cms-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .cms-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .cms-cat-tag {
      font-size: 0.8rem;
      color: var(--primary-cyan);
      margin-bottom: 6px;
      display: inline-block;
    }
    .cms-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #fff;
      line-height: 1.45;
    }
    .cms-excerpt {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .cms-foot {
      font-size: 0.8rem;
      color: #64748b;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 12px;
      display: flex;
      justify-content: space-between;
    }

    /* 8. FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .faq-item {
      background: var(--bg-glass);
      border: 1px solid var(--border-glass);
      padding: 22px;
      border-radius: var(--radius-md);
    }
    .faq-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }
    .faq-a {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Footer */
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--border-glass);
      padding: 64px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand {
      font-size: 1.35rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-desc {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
      max-width: 480px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--primary-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      color: #475569;
      font-size: 0.85rem;
      flex-wrap: wrap;
      gap: 12px;
    }

    @media (max-width: 1024px) {
      .poster-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .curator-grid {
        grid-template-columns: 1fr;
      }
      .calib-grid {
        grid-template-columns: 1fr;
      }
      .cms-grid {
        grid-template-columns: 1fr;
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
      .top5-item {
        grid-template-columns: 60px 1.5fr 1fr 100px;
      }
    }
    @media (max-width: 768px) {
      .poster-grid {
        grid-template-columns: 1fr;
      }
      .top5-item {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .cat-lead-flex {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
    }