/* roulang page: index */
:root {
      --bg-base: #0a0b0e;
      --bg-card: #12141a;
      --bg-elevated: #1a1e27;
      --bg-input: #151821;
      --primary: #8b5cf6;
      --accent: #06b6d4;
      --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
      --text-bright: #f8fafc;
      --text-regular: #cbd5e1;
      --text-muted: #64748b;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(139, 92, 246, 0.35);
      --card-radius: 10px;
      --btn-radius: 6px;
      --box-shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --box-shadow-glow: 0 0 25px rgba(139, 92, 246, 0.2);
    }

    /* Reset & Foundation Override */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-regular);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: var(--accent);
      text-decoration: none;
      transition: color 0.25s ease, opacity 0.25s ease;
    }
    a:hover {
      color: #38bdf8;
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-bright);
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 0.75rem;
    }
    p {
      color: var(--text-regular);
      margin-bottom: 1rem;
    }
    .grid-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-bright);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 28px;
      height: 28px;
      fill: url(#brandGradient);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
      margin: 0;
    }
    .nav-link {
      color: var(--text-regular);
      font-size: 0.95rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--text-bright);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-gradient);
      border-radius: 2px;
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-subtle);
      color: var(--text-bright);
      padding: 0.4rem 0.6rem;
      border-radius: var(--btn-radius);
      cursor: pointer;
    }

    /* Buttons & Badges */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.4rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--btn-radius);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-decoration: none;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    }
    .btn-primary:hover {
      opacity: 0.95;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
      color: #ffffff;
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-bright);
      border: 1px solid var(--border-subtle);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--border-hover);
      color: #ffffff;
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      background: rgba(139, 92, 246, 0.12);
      border: 1px solid rgba(139, 92, 246, 0.3);
      color: #c4b5fd;
      padding: 0.3rem 0.85rem;
      border-radius: 9999px;
      font-size: 0.82rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 1.25rem;
    }
    .badge-pill span.dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }

    /* Common Card Components */
    .my-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.75rem;
      box-shadow: var(--box-shadow-card);
      transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      height: 100%;
    }
    .my-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
      box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.65), 0 0 15px rgba(139, 92, 246, 0.15);
    }

    /* Section Styling */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    section.section-alt {
      background: #0d0f14;
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-header {
      margin-bottom: 3.25rem;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-title {
      font-size: 2.15rem;
      letter-spacing: -0.5px;
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 0;
    }

    /* 1. Hero Section */
    .hero-section {
      padding: 6rem 0 5rem;
      position: relative;
      overflow: hidden;
    }
    .hero-section::before {
      content: "";
      position: absolute;
      top: -150px;
      left: 50%;
      transform: translateX(-50%);
      width: 750px;
      height: 450px;
      background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, rgba(6, 182, 212, 0.08) 50%, transparent 70%);
      pointer-events: none;
      z-index: 0;
    }
    .hero-content {
      position: relative;
      z-index: 1;
    }
    .hero-title {
      font-size: 3.2rem;
      font-weight: 800;
      letter-spacing: -1px;
      line-height: 1.15;
      margin-bottom: 1.25rem;
    }
    .hero-title .gradient-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.12rem;
      line-height: 1.8;
      color: var(--text-regular);
      margin-bottom: 2.25rem;
      max-width: 820px;
    }
    .hero-actions {
      display: flex;
      gap: 1rem;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
    }
    .metric-card {
      background: rgba(18, 20, 26, 0.7);
      border: 1px solid var(--border-subtle);
      backdrop-filter: blur(8px);
      padding: 1.25rem 1.5rem;
      border-radius: var(--card-radius);
      border-top: 2px solid var(--primary);
    }
    .metric-value {
      font-family: "Trebuchet MS", DIN, -apple-system, sans-serif;
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-bright);
      line-height: 1.1;
      margin-bottom: 0.35rem;
    }
    .metric-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 2. Architecture Matrix */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .arch-card-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(139, 92, 246, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
      color: #c4b5fd;
    }
    .arch-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.65rem;
    }
    .arch-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 0;
    }

    /* 3. Performance Benchmark */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .compare-track {
      background: var(--bg-card);
      border-radius: var(--card-radius);
      padding: 2.25rem;
      border: 1px solid var(--border-subtle);
    }
    .compare-track.highlight {
      border-color: rgba(139, 92, 246, 0.4);
      background: linear-gradient(180deg, #161822 0%, var(--bg-card) 100%);
      box-shadow: var(--box-shadow-glow);
    }
    .compare-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--border-subtle);
    }
    .compare-list {
      list-style: none;
      margin: 0;
    }
    .compare-item {
      display: flex;
      align-items: flex-start;
      gap: 0.85rem;
      margin-bottom: 1.25rem;
      font-size: 0.95rem;
    }
    .compare-item svg {
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 4. Milestones Timeline */
    .milestone-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .milestone-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
      position: relative;
    }
    .milestone-tag {
      font-family: monospace;
      font-size: 0.8rem;
      color: var(--accent);
      background: rgba(6, 182, 212, 0.1);
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 0.75rem;
    }

    /* 5. CMS List Section */
    .cms-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .cms-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .cms-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
    }
    .cms-card-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .cms-meta {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 0.85rem;
    }
    .cms-cat-badge {
      color: #c4b5fd;
      background: rgba(139, 92, 246, 0.12);
      padding: 0.15rem 0.5rem;
      border-radius: 4px;
      font-weight: 500;
    }
    .cms-card-title {
      font-size: 1.15rem;
      line-height: 1.4;
      margin-bottom: 0.75rem;
    }
    .cms-card-title a {
      color: var(--text-bright);
    }
    .cms-card-title a:hover {
      color: var(--accent);
    }
    .cms-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .cms-card-action {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--accent);
    }
    .cms-card-action:hover {
      color: #38bdf8;
    }
    .cms-empty {
      padding: 3rem;
      text-align: center;
      background: var(--bg-card);
      border: 1px dashed var(--border-subtle);
      border-radius: var(--card-radius);
      color: var(--text-muted);
      grid-column: 1 / -1;
    }

    /* 6. Protocol & Code View */
    .protocol-box {
      background: #08090c;
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
      font-family: Consolas, Monaco, "Courier New", monospace;
      font-size: 0.88rem;
      color: #94a3b8;
      overflow-x: auto;
    }
    .protocol-box .hl-purple { color: #c084fc; }
    .protocol-box .hl-blue { color: #38bdf8; }
    .protocol-box .hl-green { color: #4ade80; }

    /* 7. FAQ Accordion */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-question {
      padding: 1.25rem 1.5rem;
      font-weight: 600;
      color: var(--text-bright);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question svg {
      transition: transform 0.25s ease;
      color: var(--accent);
    }
    .faq-item.active .faq-question svg {
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.95rem;
      line-height: 1.7;
      color: var(--text-regular);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 8. Dedicated Category Hub Section */
    .category-hub-card {
      background: linear-gradient(135deg, rgba(139, 92, 246, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
      border: 1px solid rgba(139, 92, 246, 0.3);
      border-radius: var(--card-radius);
      padding: 2.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
    }

    /* 9. Conversion Form Section */
    .form-container {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 2.5rem;
      max-width: 820px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-bright);
      margin-bottom: 0.4rem;
    }
    .form-control {
      width: 100%;
      background: var(--bg-input);
      border: 1px solid var(--border-subtle);
      border-radius: var(--btn-radius);
      padding: 0.75rem 1rem;
      color: var(--text-bright);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.25);
    }

    /* Footer */
    .site-footer {
      background: #07080a;
      border-top: 1px solid var(--border-subtle);
      padding: 4.5rem 0 2.5rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      font-size: 1.35rem;
      margin-bottom: 0.85rem;
    }
    .footer-brand p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-bright);
      margin-bottom: 1rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      font-size: 0.88rem;
      color: var(--text-muted);
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-subtle);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.6rem; }
      .hero-metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .arch-grid { grid-template-columns: repeat(2, 1fr); }
      .milestone-timeline { grid-template-columns: repeat(2, 1fr); }
      .cms-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .site-header { height: 64px; }
      .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
        gap: 1.25rem;
        border-bottom: 1px solid var(--border-subtle);
        display: none;
      }
      .nav-menu.open { display: flex; }
      .mobile-toggle { display: block; }
      .hero-title { font-size: 2.1rem; }
      .hero-metrics-grid { grid-template-columns: 1fr; }
      .compare-container { grid-template-columns: 1fr; }
      .arch-grid { grid-template-columns: 1fr; }
      .cms-grid { grid-template-columns: 1fr; }
      .milestone-timeline { grid-template-columns: 1fr; }
      .category-hub-card { flex-direction: column; text-align: center; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    }

/* roulang page: article */
:root {
      --bg-base: #0a0b0e;
      --bg-card: #12141a;
      --bg-elevated: #1a1e27;
      --bg-input: #151821;
      --primary: #8b5cf6;
      --accent: #06b6d4;
      --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
      --gold-gradient: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #d97706 100%);
      --text-bright: #f8fafc;
      --text-regular: #cbd5e1;
      --text-muted: #64748b;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(139, 92, 246, 0.35);
      --card-radius: 10px;
      --btn-radius: 6px;
      --box-shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --box-shadow-glow: 0 0 25px rgba(139, 92, 246, 0.2);
    }
    *, *::before, *::after {
      box-sizing: border-box;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-regular);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    a {
      color: var(--accent);
      text-decoration: none;
      transition: color 0.25s ease, opacity 0.25s ease;
    }
    a:hover {
      color: #38bdf8;
    }
    .grid-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-bright);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 28px;
      height: 28px;
      fill: url(#brandGradient);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
      margin: 0;
      padding: 0;
    }
    .nav-link {
      color: var(--text-regular);
      font-size: 0.95rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--text-bright);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-gradient);
      border-radius: 2px;
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-subtle);
      color: var(--text-bright);
      padding: 0.4rem 0.6rem;
      border-radius: var(--btn-radius);
      cursor: pointer;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.4rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--btn-radius);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-decoration: none;
      line-height: 1;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    }
    .btn-primary:hover {
      opacity: 0.95;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
      color: #ffffff;
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-bright);
      border: 1px solid var(--border-subtle);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--border-hover);
      color: #ffffff;
    }
    .btn-gold {
      background: var(--gold-gradient);
      color: #000000;
      font-weight: 700;
      box-shadow: 0 4px 18px rgba(245, 158, 11, 0.35);
    }
    .btn-gold:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
      color: #000000;
    }
    .my-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.75rem;
      box-shadow: var(--box-shadow-card);
      transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
      position: relative;
    }
    .my-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
      box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.65), 0 0 15px rgba(139, 92, 246, 0.15);
    }
    /* Article Specific Layout */
    .article-hero {
      position: relative;
      padding: 4.5rem 0 3.5rem;
      background: radial-gradient(circle at 50% 20%, rgba(139, 92, 246, 0.15) 0%, rgba(10, 11, 14, 0.95) 70%);
      border-bottom: 1px solid var(--border-subtle);
    }
    .article-breadcrumbs {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }
    .article-breadcrumbs a {
      color: var(--text-muted);
    }
    .article-breadcrumbs a:hover {
      color: var(--text-bright);
    }
    .article-badge-bar {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-wrap: wrap;
      margin-bottom: 1.25rem;
    }
    .badge-gold {
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid rgba(245, 158, 11, 0.4);
      color: #fbbf24;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .badge-purple {
      background: rgba(139, 92, 246, 0.15);
      border: 1px solid rgba(139, 92, 246, 0.4);
      color: #c4b5fd;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.8rem;
      font-weight: 600;
    }
    .article-h1 {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-bright);
      letter-spacing: -0.5px;
      margin-bottom: 1.5rem;
    }
    .article-lead {
      background: rgba(26, 30, 39, 0.6);
      border-left: 4px solid var(--primary);
      padding: 1.25rem 1.5rem;
      border-radius: 0 8px 8px 0;
      color: var(--text-regular);
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 1.75rem;
    }
    .article-meta-row {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      font-size: 0.9rem;
      color: var(--text-muted);
      border-top: 1px solid var(--border-subtle);
      padding-top: 1.25rem;
      flex-wrap: wrap;
    }
    .article-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    /* Section Stacking */
    .article-section {
      padding: 4rem 0;
      position: relative;
    }
    .article-section.section-alt {
      background: #0d0f14;
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    /* Content Typography & Structure */
    .article-body-wrapper {
      display: grid;
      grid-template-columns: 260px 1fr;
      gap: 3rem;
      align-items: start;
    }
    .toc-sticky {
      position: sticky;
      top: 96px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
    }
    .toc-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-bright);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .toc-list {
      list-style: none;
      padding: 0;
      margin: 0;
      font-size: 0.88rem;
    }
    .toc-list li {
      margin-bottom: 0.65rem;
    }
    .toc-list a {
      color: var(--text-muted);
      display: block;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }
    .toc-list a:hover {
      color: var(--text-bright);
      padding-left: 4px;
    }
    .content-render {
      font-size: 1.05rem;
      line-height: 1.9;
      color: #d1d5db;
    }
    .content-render h2 {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--text-bright);
      margin: 2.75rem 0 1.25rem;
      padding-bottom: 0.65rem;
      border-bottom: 1px solid var(--border-subtle);
    }
    .content-render h3 {
      font-size: 1.4rem;
      font-weight: 600;
      color: #f1f5f9;
      margin: 2rem 0 1rem;
    }
    .content-render p {
      margin-bottom: 1.5rem;
    }
    .content-render ul, .content-render ol {
      margin: 0 0 1.75rem 1.5rem;
      padding: 0;
    }
    .content-render li {
      margin-bottom: 0.5rem;
    }
    .content-render blockquote {
      border-left: 4px solid var(--accent);
      background: rgba(6, 182, 212, 0.05);
      padding: 1rem 1.5rem;
      margin: 1.75rem 0;
      border-radius: 0 6px 6px 0;
      color: var(--text-regular);
      font-style: normal;
    }
    .content-render pre {
      background: #060709;
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 1.25rem;
      overflow-x: auto;
      margin: 1.75rem 0;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.9rem;
      color: #a5b4fc;
    }
    .content-render table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.75rem 0;
      background: var(--bg-card);
      border-radius: var(--card-radius);
      overflow: hidden;
    }
    .content-render th, .content-render td {
      padding: 0.9rem 1.2rem;
      text-align: left;
      border-bottom: 1px solid var(--border-subtle);
    }
    .content-render th {
      background: var(--bg-elevated);
      color: var(--text-bright);
      font-weight: 600;
    }
    /* Summary Dashboard */
    .summary-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.25rem;
      margin-top: 1rem;
    }
    .summary-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
    }
    .summary-card-title {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-transform: uppercase;
      margin-bottom: 0.4rem;
      letter-spacing: 0.5px;
    }
    .summary-card-val {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-bright);
      font-family: "DIN", "Trebuchet MS", sans-serif;
    }
    .summary-card-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 0.35rem;
    }
    /* Trust & Originality Badge */
    .verification-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(18, 20, 26, 0.7);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem 2rem;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .verification-info {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .verification-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(139, 92, 246, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      flex-shrink: 0;
    }
    /* VIP Club Banner */
    .vip-banner {
      background: linear-gradient(135deg, rgba(26, 22, 15, 0.85) 0%, rgba(18, 20, 26, 0.95) 100%);
      border: 1px solid rgba(245, 158, 11, 0.35);
      border-radius: var(--card-radius);
      padding: 2.25rem 2.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
      position: relative;
      overflow: hidden;
    }
    .vip-banner::after {
      content: "";
      position: absolute;
      top: -50%;
      right: -10%;
      width: 250px;
      height: 250px;
      background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    /* Related Articles */
    .related-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
    }
    .related-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .related-card:hover {
      transform: translateY(-3px);
      border-color: var(--border-hover);
    }
    .related-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-bright);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .related-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }
    /* Toolbar Bottom */
    .article-toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-subtle);
      padding-top: 1.5rem;
      margin-top: 2rem;
      flex-wrap: wrap;
      gap: 1rem;
    }
    /* Footer */
    .site-footer {
      background: #08090b;
      border-top: 1px solid var(--border-subtle);
      padding: 4.5rem 0 2rem;
      font-size: 0.92rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand p {
      color: var(--text-muted);
      line-height: 1.7;
      margin-top: 0.75rem;
      max-width: 360px;
    }
    .footer-col h5 {
      color: var(--text-bright);
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--text-bright);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-muted);
      font-size: 0.85rem;
      flex-wrap: wrap;
      gap: 1rem;
    }
    /* Responsive Adjustments */
    @media (max-width: 991px) {
      .article-body-wrapper {
        grid-template-columns: 1fr;
      }
      .toc-sticky {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .site-header {
        height: 64px;
      }
      .nav-menu {
        display: none;
      }
      .mobile-toggle {
        display: inline-flex;
      }
      .article-h1 {
        font-size: 1.85rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .vip-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: category1 */
:root {
      --bg-base: #0a0b0e;
      --bg-card: #12141a;
      --bg-elevated: #1a1e27;
      --bg-input: #151821;
      --primary: #8b5cf6;
      --accent: #06b6d4;
      --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
      --text-bright: #f8fafc;
      --text-regular: #cbd5e1;
      --text-muted: #64748b;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(139, 92, 246, 0.35);
      --card-radius: 10px;
      --btn-radius: 6px;
      --box-shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --box-shadow-glow: 0 0 25px rgba(139, 92, 246, 0.2);
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-regular);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
    }
    a {
      color: var(--accent);
      text-decoration: none;
      transition: color 0.25s ease, opacity 0.25s ease;
    }
    a:hover {
      color: #38bdf8;
    }
    .grid-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-bright);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 28px;
      height: 28px;
      fill: url(#brandGradient);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
      margin: 0;
    }
    .nav-link {
      color: var(--text-regular);
      font-size: 0.95rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--text-bright);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-gradient);
      border-radius: 2px;
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-subtle);
      color: var(--text-bright);
      padding: 0.4rem 0.6rem;
      border-radius: var(--btn-radius);
      cursor: pointer;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.4rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--btn-radius);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-decoration: none;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    }
    .btn-primary:hover {
      opacity: 0.95;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
      color: #ffffff;
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-bright);
      border: 1px solid var(--border-subtle);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--border-hover);
      color: #ffffff;
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      background: rgba(139, 92, 246, 0.12);
      border: 1px solid rgba(139, 92, 246, 0.3);
      color: #c4b5fd;
      padding: 0.3rem 0.85rem;
      border-radius: 9999px;
      font-size: 0.82rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 1.25rem;
    }
    .badge-pill span.dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }
    .my-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.75rem;
      box-shadow: var(--box-shadow-card);
      transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      height: 100%;
    }
    .my-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
      box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.65), 0 0 15px rgba(139, 92, 246, 0.15);
    }
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    section.section-alt {
      background: #0d0f14;
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-header {
      margin-bottom: 3.25rem;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-title {
      font-size: 2.15rem;
      letter-spacing: -0.5px;
      margin-bottom: 0.85rem;
      color: var(--text-bright);
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 0;
    }
    .gradient-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    /* Category Specific Styles: Blueprint Hero (Whitepaper Style) */
    .cat-hero-section {
      padding: 4.5rem 0 3.5rem;
      background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.12) 0%, transparent 60%);
      border-bottom: 1px solid var(--border-subtle);
    }
    .cat-hero-card {
      background: linear-gradient(145deg, #13161f 0%, #0d0e14 100%);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 2.5rem;
      box-shadow: var(--box-shadow-card);
    }
    .doc-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid rgba(6, 182, 212, 0.35);
      color: #38bdf8;
      font-size: 0.8rem;
      padding: 0.25rem 0.75rem;
      border-radius: 4px;
      margin-bottom: 1rem;
      font-family: monospace;
    }
    .cat-h1 {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-bright);
      margin-bottom: 1rem;
      letter-spacing: -0.5px;
    }
    .cat-lead {
      font-size: 1.05rem;
      color: var(--text-regular);
      margin-bottom: 1.75rem;
      line-height: 1.8;
    }
    .doc-toc {
      background: rgba(0, 0, 0, 0.3);
      border: 1px dashed rgba(255, 255, 255, 0.15);
      border-radius: 8px;
      padding: 1.25rem 1.5rem;
      margin-bottom: 2rem;
    }
    .doc-toc-title {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 0.75rem;
      font-weight: 700;
    }
    .doc-toc-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.5rem 1.5rem;
      font-size: 0.9rem;
      color: #94a3b8;
    }
    .doc-toc-list li span {
      color: var(--accent);
      margin-right: 0.4rem;
      font-family: monospace;
    }
    .cat-form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 2rem;
    }
    .form-group {
      margin-bottom: 1.15rem;
    }
    .form-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0.4rem;
      display: block;
    }
    .form-control {
      width: 100%;
      background: var(--bg-input);
      border: 1px solid var(--border-subtle);
      border-radius: var(--btn-radius);
      padding: 0.65rem 0.9rem;
      color: var(--text-bright);
      font-size: 0.9rem;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 10px rgba(139, 92, 246, 0.25);
    }

    /* Filter Toolbar */
    .filter-bar {
      background: var(--bg-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 0.85rem 1.25rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }
    .filter-group {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-wrap: wrap;
    }
    .filter-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-right: 0.5rem;
    }
    .filter-pill {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-subtle);
      color: var(--text-regular);
      padding: 0.3rem 0.85rem;
      border-radius: 999px;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .filter-pill.active, .filter-pill:hover {
      background: var(--primary-gradient);
      color: #fff;
      border-color: transparent;
    }

    /* Parameter Table */
    .tech-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 1rem;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      overflow: hidden;
    }
    .tech-table th {
      background: var(--bg-elevated);
      padding: 1rem 1.25rem;
      text-align: left;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-bright);
      border-bottom: 1px solid var(--border-subtle);
    }
    .tech-table td {
      padding: 1rem 1.25rem;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.9rem;
      color: var(--text-regular);
    }
    .tech-table tr:last-child td {
      border-bottom: none;
    }
    .tech-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }

    /* FAQ Fixed Grid */
    .faq-grid-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.75rem;
      height: 100%;
    }
    .faq-grid-card h4 {
      font-size: 1.15rem;
      color: var(--text-bright);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .faq-grid-card h4 span.icon {
      color: var(--accent);
      font-weight: 800;
    }
    .faq-grid-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Dynamic / CMS Post Cards */
    .cms-post-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: transform 0.25s ease, border-color 0.25s ease;
    }
    .cms-post-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
    }
    .cms-post-card h3 {
      font-size: 1.2rem;
      line-height: 1.4;
      margin-bottom: 0.75rem;
    }
    .cms-post-card h3 a {
      color: var(--text-bright);
    }
    .cms-post-card h3 a:hover {
      color: var(--accent);
    }
    .cms-post-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
      display: flex;
      gap: 0.85rem;
    }
    .cms-post-desc {
      font-size: 0.9rem;
      color: var(--text-regular);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }

    /* Footer */
    .site-footer {
      background: #08090c;
      border-top: 1px solid var(--border-subtle);
      padding: 4.5rem 0 2rem;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand p {
      margin-top: 1rem;
      line-height: 1.7;
      max-width: 380px;
    }
    .footer-col h5 {
      color: var(--text-bright);
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a {
      color: var(--text-muted);
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: var(--text-bright);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-subtle);
      padding-top: 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.85rem;
    }

    @media screen and (max-width: 900px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .doc-toc-list {
        grid-template-columns: 1fr;
      }
    }
    @media screen and (max-width: 640px) {
      .site-header {
        height: auto;
        padding: 1rem 0;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        padding-top: 1rem;
        gap: 0.75rem;
      }
      .nav-menu.open {
        display: flex;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cat-h1 {
        font-size: 2rem;
      }
    }