/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --accent: #3b82f6;
      --highlight: #0284c7;
      --bg-canvas: #f8fafc;
      --bg-card: #ffffff;
      --text-heading: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-pill: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.04);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      background-color: var(--bg-canvas);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 999;
      box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.5rem;
      color: var(--accent);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }
    .main-nav a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 6px 0;
      position: relative;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-primary {
      padding: 0.55rem 1.25rem;
      font-size: 0.9rem;
    }

    /* Common Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 0.75rem 1.6rem;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #ffffff;
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
      padding: 0.75rem 1.6rem;
    }
    .btn-outline:hover {
      background: #eff6ff;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-pill {
      border-radius: var(--radius-pill);
    }

    /* Section Foundations */
    .section-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: #ffffff;
    }
    .section-header {
      margin-bottom: 3.2rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: #eff6ff;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      margin-bottom: 0.8rem;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.5px;
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* Cards */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      padding: 2rem 1.75rem;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #cbd5e1;
    }
    .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }
    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.75rem;
    }
    .feature-text {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }

    /* Hero Section */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
      color: #ffffff;
      padding: 5.5rem 0 6rem;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/2fee1c3ab8488f2b.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.16;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-title {
      font-size: 2.65rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      color: #ffffff;
    }
    .hero-lead {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 2rem;
      max-width: 560px;
    }
    .hero-box {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-md);
      padding: 2.2rem;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    .live-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      border-radius: var(--radius-pill);
      background: #ef4444;
      color: #ffffff;
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 1.2rem;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #ffffff;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
      100% { opacity: 1; transform: scale(1); }
    }
    .countdown-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin: 1.5rem 0;
    }
    .countdown-unit {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-sm);
      text-align: center;
      padding: 0.75rem 0.5rem;
    }
    .countdown-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: #ffffff;
      line-height: 1;
      font-feature-settings: "tnum";
    }
    .countdown-lbl {
      font-size: 0.75rem;
      color: #94a3b8;
      margin-top: 4px;
    }

    /* Metric Bar */
    .metric-item {
      text-align: center;
      padding: 1.5rem;
    }
    .metric-val {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 0.25rem;
    }
    .metric-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Timeline Steps */
    .flow-card {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      height: 100%;
      box-shadow: var(--shadow-sm);
    }
    .flow-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
      box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
    }

    /* Showcase Cards */
    .showcase-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .showcase-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .showcase-media {
      position: relative;
      height: 200px;
      overflow: hidden;
      background: #e2e8f0;
    }
    .showcase-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .showcase-card:hover .showcase-media img {
      transform: scale(1.05);
    }
    .showcase-body {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .showcase-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 0.65rem;
    }
    .tag-badge {
      background: #eff6ff;
      color: var(--primary);
      font-size: 0.78rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: var(--radius-pill);
    }
    .score-badge {
      font-weight: 700;
      color: #f59e0b;
      font-size: 0.88rem;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    /* CMS Article List */
    .article-row-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem 1.5rem;
      margin-bottom: 1rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .article-row-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-hover);
      transform: translateX(4px);
    }
    .article-row-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.5rem;
    }
    .article-cat {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent);
      background: #f0f9ff;
      padding: 2px 8px;
      border-radius: 4px;
    }
    .article-date {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .article-row-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }
    .article-row-title a {
      color: var(--text-heading);
    }
    .article-row-title a:hover {
      color: var(--primary);
    }
    .article-row-excerpt {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* Accordion FAQ */
    .faq-accordion .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 0.85rem;
      overflow: hidden;
    }
    .faq-accordion .accordion-title {
      font-weight: 700;
      color: var(--text-heading);
      font-size: 1.05rem;
      padding: 1.2rem 1.5rem;
      background: #ffffff;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-accordion .accordion-title:hover {
      background: #f8fafc;
      color: var(--primary);
    }
    .faq-accordion .accordion-content {
      padding: 1.2rem 1.5rem;
      background: #fafbfc;
      border-top: 1px solid var(--border-color);
      color: var(--text-body);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* Guarantee strip */
    .guarantee-strip {
      background: linear-gradient(90deg, #1e3a8a 0%, #1e40af 100%);
      color: #ffffff;
      padding: 2.2rem 0;
    }
    .guarantee-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .guarantee-box i {
      font-size: 2.2rem;
      color: #60a5fa;
    }
    .guarantee-box h4 {
      margin: 0 0 4px 0;
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
    }
    .guarantee-box p {
      margin: 0;
      font-size: 0.88rem;
      color: #bfdbfe;
    }

    /* Final CTA Card */
    .cta-card {
      background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
      border: 2px solid #bfdbfe;
      border-radius: var(--radius-md);
      padding: 4rem 2rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    /* Site Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1e293b;
    }
    .footer-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 1.25rem;
      letter-spacing: -0.2px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      font-size: 0.85rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
    }

    /* Empty state */
    .empty-cms-state {
      padding: 3rem 1.5rem;
      text-align: center;
      background: #ffffff;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      color: var(--text-muted);
    }

    @media (max-width: 1023px) {
      .hero-title { font-size: 2.2rem; }
      .section-wrap { padding: 3.5rem 0; }
    }
    @media (max-width: 639px) {
      .hero-title { font-size: 1.8rem; }
      .hero-box { margin-top: 2rem; padding: 1.5rem; }
      .main-nav { display: none; }
      .section-wrap { padding: 2.5rem 0; }
      .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
    }

/* roulang page: article */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --accent: #3b82f6;
      --highlight: #0284c7;
      --bg-canvas: #f8fafc;
      --bg-card: #ffffff;
      --text-heading: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-pill: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.04);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      background-color: var(--bg-canvas);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover { color: var(--primary-hover); }
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 999;
      box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.5rem;
      color: var(--accent);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }
    .main-nav a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 6px 0;
      position: relative;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-primary {
      padding: 0.55rem 1.25rem;
      font-size: 0.9rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 0.75rem 1.6rem;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #ffffff;
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
      padding: 0.75rem 1.6rem;
    }
    .btn-outline:hover {
      background: #eff6ff;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-pill {
      border-radius: var(--radius-pill);
    }
    .article-header-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 3rem 0 2.5rem;
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      flex-wrap: wrap;
    }
    .breadcrumb-nav a {
      color: var(--text-muted);
    }
    .breadcrumb-nav a:hover {
      color: var(--primary);
    }
    .breadcrumb-nav span.separator {
      color: #cbd5e1;
    }
    .article-main-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-heading);
      line-height: 1.35;
      margin-bottom: 1.25rem;
      letter-spacing: -0.5px;
    }
    .article-meta-bar {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      font-size: 0.9rem;
      color: var(--text-muted);
      flex-wrap: wrap;
      padding-bottom: 0.5rem;
    }
    .article-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .article-meta-item i {
      color: var(--accent);
    }
    .article-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 3px 10px;
      background: #eff6ff;
      color: var(--primary);
      border-radius: var(--radius-pill);
      font-size: 0.82rem;
      font-weight: 700;
    }
    .article-body-section {
      padding: 3.5rem 0 4.5rem;
    }
    .article-paper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 2.5rem 2.8rem;
    }
    .article-lead-box {
      background: #eff6ff;
      border-left: 4px solid var(--primary);
      padding: 1.25rem 1.5rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 2.5rem;
    }
    .article-lead-title {
      font-weight: 700;
      color: var(--primary);
      font-size: 0.95rem;
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 0.5rem;
    }
    .article-lead-desc {
      font-size: 0.96rem;
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
    }
    .article-render-content {
      font-size: 1.05rem;
      line-height: 1.85;
      color: #1e293b;
    }
    .article-render-content p {
      margin-bottom: 1.5rem;
      text-align: justify;
    }
    .article-render-content h2 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-heading);
      margin-top: 2.5rem;
      margin-bottom: 1rem;
      padding-bottom: 0.6rem;
      border-bottom: 1px solid var(--border-color);
    }
    .article-render-content h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-top: 2rem;
      margin-bottom: 0.8rem;
    }
    .article-render-content img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      margin: 1.8rem 0;
      box-shadow: var(--shadow-sm);
      display: block;
    }
    .article-render-content blockquote {
      margin: 1.8rem 0;
      padding: 1rem 1.5rem;
      background: #f1f5f9;
      border-left: 4px solid var(--highlight);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-style: normal;
      color: var(--text-body);
    }
    .article-render-content ul,
    .article-render-content ol {
      margin: 1rem 0 1.5rem 1.5rem;
      padding-left: 0.5rem;
    }
    .article-render-content li {
      margin-bottom: 0.5rem;
    }
    .chapter-switch-strip {
      margin-top: 3.5rem;
      padding-top: 2rem;
      border-top: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .social-react-bar {
      margin-top: 2.5rem;
      padding: 1.5rem;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 1.25rem;
      flex-wrap: wrap;
    }
    .react-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 0.6rem 1.4rem;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      color: var(--text-body);
      font-size: 0.9rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }
    .react-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .react-btn i {
      color: var(--accent);
    }
    .section-wrap {
      padding: 4.5rem 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: #ffffff;
    }
    .section-header {
      margin-bottom: 2.8rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: #eff6ff;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      margin-bottom: 0.8rem;
    }
    .section-title {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.5px;
      margin-bottom: 0.75rem;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 640px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      padding: 2rem 1.75rem;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #cbd5e1;
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
    }
    .feature-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.75rem;
    }
    .feature-text {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .copyright-notice-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      margin-top: 2rem;
    }
    .notice-header {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 1rem;
      color: var(--primary);
      font-weight: 700;
      font-size: 1.05rem;
    }
    .empty-state-box {
      text-align: center;
      padding: 4.5rem 2rem;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-color);
    }
    .empty-state-icon {
      font-size: 3rem;
      color: #94a3b8;
      margin-bottom: 1.25rem;
    }
    .empty-state-text {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
    }
    .empty-state-sub {
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1e293b;
    }
    .footer-title {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.88rem;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.82rem;
    }
    @media screen and (max-width: 639px) {
      .article-main-title {
        font-size: 1.65rem;
      }
      .article-paper {
        padding: 1.5rem 1.2rem;
      }
      .chapter-switch-strip {
        flex-direction: column;
        align-items: stretch;
      }
      .chapter-switch-strip .btn {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --accent: #3b82f6;
      --highlight: #0284c7;
      --bg-canvas: #f8fafc;
      --bg-card: #ffffff;
      --text-heading: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-pill: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.04);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      background-color: var(--bg-canvas);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover { color: var(--primary-hover); }
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 999;
      box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.5rem;
      color: var(--accent);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }
    .main-nav a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 6px 0;
      position: relative;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-primary {
      padding: 0.55rem 1.25rem;
      font-size: 0.9rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 0.75rem 1.6rem;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #ffffff;
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
      padding: 0.75rem 1.6rem;
    }
    .btn-outline:hover {
      background: #eff6ff;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-pill {
      border-radius: var(--radius-pill);
    }
    .section-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: #ffffff;
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: #eff6ff;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      margin-bottom: 0.8rem;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.5px;
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .breadcrumbs-wrap {
      padding: 1.25rem 0;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9rem;
    }
    .breadcrumbs-wrap a {
      color: var(--text-muted);
    }
    .breadcrumbs-wrap a:hover {
      color: var(--primary);
    }
    .breadcrumbs-wrap span.separator {
      margin: 0 8px;
      color: #cbd5e1;
    }
    .breadcrumbs-wrap span.current {
      color: var(--primary);
      font-weight: 600;
    }

    /* Comparison Hero Blueprint */
    .hero-compare {
      background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1e40af 100%);
      color: #ffffff;
      padding: 4.5rem 0 5.5rem;
      position: relative;
      overflow: hidden;
    }
    .hero-compare-bg {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background-image: url('/assets/images/669acfbbb4d1902c.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      mix-blend-mode: overlay;
    }
    .compare-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 2.25rem 2rem;
      color: var(--text-body);
      position: relative;
      box-shadow: 0 10px 25px rgba(15, 23, 42, 0.15);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .compare-card.featured {
      background: #ffffff;
      border: 2px solid var(--accent);
      box-shadow: 0 20px 35px rgba(30, 64, 175, 0.25);
      transform: scale(1.03);
      z-index: 2;
    }
    .popular-ribbon {
      position: absolute;
      top: -14px;
      right: 24px;
      background: linear-gradient(90deg, #2563eb, #0284c7);
      color: #ffffff;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
      letter-spacing: 0.5px;
    }
    .compare-card-head {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1.25rem;
      margin-bottom: 1.5rem;
    }
    .compare-tier-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-heading);
      margin-bottom: 0.4rem;
    }
    .compare-tagline {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .compare-feature-list {
      list-style: none;
      margin: 0 0 2rem 0;
      padding: 0;
      flex-grow: 1;
    }
    .compare-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.92rem;
      margin-bottom: 0.85rem;
      color: #475569;
    }
    .compare-feature-list li i {
      color: #10b981;
      margin-top: 3px;
    }

    /* Filter Matrix */
    .filter-matrix-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 2rem;
      box-shadow: var(--shadow-sm);
      margin-bottom: 2.5rem;
    }
    .filter-row {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      padding: 0.75rem 0;
      border-bottom: 1px dashed var(--border-color);
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-row:first-child {
      padding-top: 0;
    }
    .filter-label {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-heading);
      min-width: 72px;
    }
    .filter-pill {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.88rem;
      border-radius: var(--radius-pill);
      color: var(--text-body);
      background: transparent;
      transition: var(--transition);
      cursor: pointer;
    }
    .filter-pill:hover {
      background: #eff6ff;
      color: var(--primary);
    }
    .filter-pill.active {
      background: var(--primary);
      color: #ffffff;
      font-weight: 600;
    }

    /* Comic Card Item */
    .comic-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .comic-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #cbd5e1;
    }
    .comic-cover {
      position: relative;
      width: 100%;
      padding-top: 133%; /* 3:4 aspect */
      overflow: hidden;
      background: #e2e8f0;
    }
    .comic-cover img {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .comic-card:hover .comic-cover img {
      transform: scale(1.04);
    }
    .badge-status {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(15, 23, 42, 0.75);
      color: #ffffff;
      backdrop-filter: blur(4px);
      padding: 3px 9px;
      font-size: 0.75rem;
      border-radius: 4px;
      font-weight: 600;
    }
    .badge-score {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(30, 64, 175, 0.85);
      color: #ffffff;
      backdrop-filter: blur(4px);
      padding: 2px 8px;
      font-size: 0.75rem;
      border-radius: var(--radius-pill);
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 3px;
    }
    .badge-score i {
      color: #fbbf24;
    }
    .comic-info {
      padding: 1.25rem 1.15rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .comic-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }
    .comic-meta-tags {
      display: flex;
      gap: 6px;
      margin-bottom: 0.75rem;
    }
    .tag-sm {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: #f1f5f9;
      color: var(--text-muted);
      border-radius: 4px;
    }
    .comic-synopsis {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 1rem;
      flex-grow: 1;
    }
    .comic-footer-action {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid #f1f5f9;
      padding-top: 0.75rem;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Rank List Layout */
    .rank-board-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 12px 0;
      border-bottom: 1px solid #f1f5f9;
      transition: var(--transition);
    }
    .rank-item:last-child {
      border-bottom: none;
    }
    .rank-num {
      width: 26px;
      height: 26px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 800;
      border-radius: 6px;
      background: #f1f5f9;
      color: var(--text-muted);
      flex-shrink: 0;
    }
    .rank-num.top-1 { background: #fee2e2; color: #dc2626; }
    .rank-num.top-2 { background: #ffedd5; color: #ea580c; }
    .rank-num.top-3 { background: #fef9c3; color: #ca8a04; }
    .rank-name {
      font-weight: 600;
      color: var(--text-heading);
      font-size: 0.95rem;
      flex-grow: 1;
    }
    .rank-heat {
      font-size: 0.8rem;
      color: #94a3b8;
    }

    /* Topic Banners */
    .topic-banner-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .topic-banner-item:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .topic-banner-img {
      height: 150px;
      position: relative;
      background-size: cover;
      background-position: center;
    }
    .topic-banner-overlay {
      position: absolute;
      top:0; left:0; right:0; bottom:0;
      background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.2) 100%);
      display: flex;
      align-items: flex-end;
      padding: 1.25rem;
    }
    .topic-banner-title {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin: 0;
    }
    .topic-banner-body {
      padding: 1.25rem;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Reading Guide Steps */
    .guide-tip-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .guide-tip-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 1rem;
    }
    .guide-tip-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
    }
    .guide-tip-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin: 0;
    }

    /* FAQ Box */
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem 1.75rem;
      margin-bottom: 1.25rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: #cbd5e1;
    }
    .faq-q {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 0.6rem;
    }
    .faq-q i {
      color: var(--accent);
      font-size: 1rem;
    }
    .faq-a {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Live Update Dynamic Box */
    .update-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .update-item {
      padding: 1rem 0;
      border-bottom: 1px solid #f1f5f9;
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 16px;
    }
    .update-item:last-child {
      border-bottom: none;
    }
    .update-item a {
      font-weight: 600;
      color: var(--text-heading);
    }
    .update-item a:hover {
      color: var(--primary);
    }
    .update-meta {
      font-size: 0.85rem;
      color: #94a3b8;
      white-space: nowrap;
    }

    /* CTA Section */
    .cta-card {
      background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
      border-radius: var(--radius-md);
      padding: 3.5rem 2rem;
      color: #ffffff;
      text-align: center;
      box-shadow: 0 15px 30px rgba(30, 64, 175, 0.2);
    }
    .cta-title {
      font-size: 2.1rem;
      font-weight: 800;
      margin-bottom: 0.85rem;
      color: #ffffff;
    }
    .cta-desc {
      font-size: 1.05rem;
      color: #cbd5e1;
      max-width: 620px;
      margin: 0 auto 2rem auto;
      line-height: 1.7;
    }
    .cta-form {
      display: flex;
      max-width: 480px;
      margin: 0 auto;
      gap: 10px;
    }
    .cta-input {
      flex-grow: 1;
      border: 1px solid rgba(255, 255, 255, 0.3);
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-sm);
      padding: 0.75rem 1.25rem;
      color: #ffffff;
      outline: none;
      font-size: 0.95rem;
    }
    .cta-input::placeholder {
      color: #cbd5e1;
    }
    .cta-input:focus {
      background: rgba(255, 255, 255, 0.25);
      border-color: #ffffff;
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1e293b;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 1.25rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.88rem;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid #1e293b;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
    }

    /* Responsive */
    @media (max-width: 1023px) {
      .compare-card.featured {
        transform: none;
        margin-top: 1rem;
        margin-bottom: 1rem;
      }
      .cta-form {
        flex-direction: column;
      }
    }
    @media (max-width: 639px) {
      .header-inner {
        height: 64px;
      }
      .section-wrap {
        padding: 3rem 0;
      }
      .hero-compare {
        padding: 3rem 0 4rem;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }