/* roulang page: index */
:root {
      --bg-canvas: #0b0d10;
      --bg-panel: #15181e;
      --bg-panel-hover: #1c212a;
      --color-primary: #f59e0b;
      --color-primary-gradient: linear-gradient(135deg, #f59e0b 0%, #e11d48 100%);
      --color-accent: #e11d48;
      --color-success: #10b981;
      --color-info: #06b6d4;
      --text-heading: #f9fafb;
      --text-body: #d1d5db;
      --text-muted: #9ca3af;
      --border-line: #262d38;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-pill: 9999px;
      --shadow-card: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
      --transition: all 0.25s ease-in-out;
    }

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

    body {
      background-color: var(--bg-canvas);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    .site-top-bar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 13, 16, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-line);
      padding: 0.75rem 1.5rem;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: 0.04em;
    }
    .brand-logo i {
      color: var(--color-primary);
      font-size: 1.5rem;
    }

    .nav-search-wrap {
      position: relative;
      width: 100%;
      max-width: 380px;
    }
    .nav-search-wrap input {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      border-radius: var(--radius-pill);
      padding: 0.45rem 1rem 0.45rem 2.5rem;
      font-size: 0.85rem;
      margin: 0;
      box-shadow: none;
      height: 38px;
    }
    .nav-search-wrap input:focus {
      border-color: var(--color-primary);
      background: #181d26;
      box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .nav-search-wrap i {
      position: absolute;
      left: 0.9rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.25rem;
      margin: 0;
    }
    .nav-menu a {
      font-weight: 500;
      font-size: 0.95rem;
      padding: 0.35rem 0.6rem;
      border-radius: var(--radius-sm);
    }
    .nav-menu a.active, .nav-menu a:hover {
      color: var(--color-primary);
      background: rgba(245, 158, 11, 0.08);
    }

    .nav-controls {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .bitrate-picker select {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--color-primary);
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 0.35rem 0.6rem;
      margin: 0;
      height: 34px;
      cursor: pointer;
    }
    .btn-client-access {
      background: var(--color-primary-gradient);
      color: #0b0d10 !important;
      font-weight: 700;
      font-size: 0.82rem;
      padding: 0.45rem 1rem;
      border-radius: var(--radius-pill);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-client-access:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    }

    .app-layout {
      display: flex;
      min-height: calc(100vh - 65px);
    }

    .docs-sidebar {
      width: 250px;
      flex-shrink: 0;
      background: #111419;
      border-right: 1px solid var(--border-line);
      padding: 1.5rem 1rem;
      display: block;
    }
    @media screen and (max-width: 1023px) {
      .docs-sidebar {
        display: none;
      }
    }
    .sidebar-group-title {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
      margin: 1.25rem 0 0.5rem 0.5rem;
      font-weight: 700;
    }
    .sidebar-nav-list {
      list-style: none;
      margin: 0;
    }
    .sidebar-nav-list li a {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.45rem 0.75rem;
      font-size: 0.88rem;
      color: var(--text-body);
      border-radius: var(--radius-sm);
    }
    .sidebar-nav-list li a:hover, .sidebar-nav-list li a.active {
      background: var(--bg-panel-hover);
      color: var(--color-primary);
      font-weight: 600;
    }

    .main-viewport {
      flex: 1;
      min-width: 0;
      background: var(--bg-canvas);
    }

    .section-wrap {
      padding: 4.5rem 2rem;
      border-bottom: 1px solid var(--border-line);
    }
    @media screen and (max-width: 639px) {
      .section-wrap {
        padding: 3rem 1rem;
      }
    }
    .section-header {
      margin-bottom: 2.5rem;
      max-width: 780px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.2rem 0.65rem;
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid rgba(245, 158, 11, 0.3);
      color: var(--color-primary);
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 0.75rem;
    }
    .section-title {
      color: var(--text-heading);
      font-size: 1.85rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      margin-bottom: 0.75rem;
      line-height: 1.35;
    }
    .section-lead {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.75;
      margin: 0;
    }

    .hero-board {
      position: relative;
      padding: 4.5rem 2rem 5rem;
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11, 13, 16, 0.82) 0%, rgba(11, 13, 16, 0.98) 100%);
      z-index: 1;
    }
    .hero-content-layer {
      position: relative;
      z-index: 2;
      max-width: 1280px;
      margin: 0 auto;
    }
    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 900;
      color: #ffffff;
      line-height: 1.25;
      margin-bottom: 1.2rem;
      letter-spacing: -0.01em;
    }
    @media screen and (max-width: 768px) {
      .hero-h1 {
        font-size: 2rem;
      }
    }
    .hero-desc {
      font-size: 1.05rem;
      color: #d1d5db;
      line-height: 1.8;
      max-width: 820px;
      margin-bottom: 2rem;
    }

    .dashboard-metrics-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 1.25rem;
      margin-top: 2.5rem;
    }
    .metric-card {
      background: rgba(21, 24, 30, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.25rem 1.5rem;
      box-shadow: var(--shadow-card);
      border-left: 3px solid var(--color-primary);
    }
    .metric-value {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-heading);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      line-height: 1.2;
    }
    .metric-value small {
      font-size: 0.95rem;
      color: var(--color-primary);
      margin-left: 0.2rem;
    }
    .metric-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 0.35rem;
    }

    .hero-search-box {
      max-width: 680px;
      display: flex;
      background: #14181f;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-pill);
      padding: 0.3rem 0.3rem 0.3rem 1.25rem;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    }
    .hero-search-box input {
      background: transparent;
      border: none;
      box-shadow: none;
      color: #fff;
      font-size: 0.95rem;
      margin: 0;
      height: 44px;
    }
    .hero-search-box input:focus {
      border: none;
      box-shadow: none;
      background: transparent;
    }
    .hero-search-box button {
      background: var(--color-primary-gradient);
      border: none;
      color: #0b0d10;
      font-weight: 700;
      padding: 0 1.6rem;
      border-radius: var(--radius-pill);
      cursor: pointer;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
    }
    .hero-search-box button:hover {
      filter: brightness(1.1);
      transform: translateY(-1px);
    }

    .service-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
      border-color: rgba(245, 158, 11, 0.4);
    }
    .service-card-cover {
      position: relative;
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }
    .service-card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .service-card:hover .service-card-cover img {
      transform: scale(1.05);
    }
    .service-card-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(21, 24, 30, 0.95) 100%);
    }
    .service-card-badge {
      position: absolute;
      top: 0.75rem;
      left: 0.75rem;
      background: rgba(11, 13, 16, 0.75);
      backdrop-filter: blur(4px);
      border: 1px solid var(--border-subtle);
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--color-primary);
    }
    .service-card-body {
      padding: 1.25rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
    }
    .service-card-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1rem;
      flex: 1;
    }

    .channel-gateway-panel {
      background: #12151b;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 2rem;
    }
    .channel-capsule-list {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-bottom: 1.75rem;
    }
    .channel-capsule {
      background: #181d26;
      border: 1px solid var(--border-subtle);
      color: var(--text-body);
      padding: 0.4rem 1.1rem;
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .channel-capsule:hover {
      background: rgba(245, 158, 11, 0.15);
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .channel-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.25rem;
    }
    .channel-entry-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .channel-entry-card:hover {
      border-color: var(--color-primary);
      background: var(--bg-panel-hover);
    }
    .channel-entry-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .channel-entry-card p {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
    }
    .channel-link-btn {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .channel-link-btn:hover {
      text-decoration: underline;
    }

    .benchmark-table-wrapper {
      overflow-x: auto;
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
    }
    .benchmark-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      margin: 0;
      font-size: 0.92rem;
    }
    .benchmark-table th, .benchmark-table td {
      padding: 1.1rem 1.4rem;
      border-bottom: 1px solid var(--border-subtle);
    }
    .benchmark-table th {
      background: #101318;
      color: var(--text-heading);
      font-weight: 700;
      font-size: 0.88rem;
    }
    .benchmark-table td {
      color: var(--text-body);
    }
    .benchmark-table tbody tr:hover {
      background: rgba(255, 255, 255, 0.02);
    }
    .tag-highlight {
      background: rgba(16, 185, 129, 0.15);
      color: var(--color-success);
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      font-size: 0.78rem;
      font-weight: 700;
    }
    .tag-common {
      background: rgba(156, 163, 175, 0.1);
      color: var(--text-muted);
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      font-size: 0.78rem;
    }

    .timeline-stream {
      position: relative;
      padding-left: 2rem;
    }
    .timeline-stream::before {
      content: "";
      position: absolute;
      left: 7px;
      top: 10px;
      bottom: 10px;
      width: 2px;
      background: var(--border-line);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 2rem;
    }
    .timeline-node:last-child {
      margin-bottom: 0;
    }
    .timeline-pin {
      position: absolute;
      left: -2rem;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--bg-canvas);
      border: 3px solid var(--color-primary);
    }
    .timeline-node-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.25rem 1.5rem;
    }
    .timeline-date {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 0.25rem;
    }
    .timeline-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.4rem;
    }
    .timeline-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }

    .scenario-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      border-top: 3px solid transparent;
      transition: var(--transition);
    }
    .scenario-card:hover {
      border-top-color: var(--color-accent);
      transform: translateY(-3px);
      box-shadow: var(--shadow-card);
    }
    .scenario-icon {
      font-size: 2rem;
      color: var(--color-primary);
      margin-bottom: 1.25rem;
    }
    .scenario-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.6rem;
    }
    .scenario-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.2rem;
flex: 1;
    }
    .scenario-feature-list {
      list-style: none;
      margin: 0;
      padding: 0;
      font-size: 0.84rem;
    }
    .scenario-feature-list li {
      margin-bottom: 0.45rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-body);
    }
    .scenario-feature-list li i {
      color: var(--color-success);
      font-size: 0.75rem;
    }

    .article-post-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .article-post-card:hover {
      border-color: rgba(245, 158, 11, 0.35);
      transform: translateY(-3px);
      box-shadow: var(--shadow-card);
    }
    .article-thumb {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      position: relative;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .article-post-card:hover .article-thumb img {
      transform: scale(1.06);
    }
    .article-meta {
      padding: 1.2rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .article-tag {
      font-size: 0.75rem;
      color: var(--color-primary);
      font-weight: 700;
      margin-bottom: 0.4rem;
      display: inline-block;
    }
    .article-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      line-height: 1.45;
      margin-bottom: 0.6rem;
    }
    .article-summary {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
      flex: 1;
    }
    .article-link {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }

    .warranty-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      text-align: left;
      height: 100%;
      transition: var(--transition);
    }
    .warranty-card:hover {
      border-color: rgba(245, 158, 11, 0.4);
      background: var(--bg-panel-hover);
    }
    .warranty-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(245, 158, 11, 0.1);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 1rem;
    }
    .warranty-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.4rem;
    }
    .warranty-text {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    .troubleshoot-step-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.25rem;
    }
    .step-card {
      background: #13171e;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      position: relative;
    }
    .step-badge {
      display: inline-block;
      width: 28px;
      height: 28px;
      line-height: 28px;
      text-align: center;
      border-radius: 50%;
      background: var(--color-primary);
      color: #0b0d10;
      font-weight: 800;
      font-size: 0.85rem;
      margin-bottom: 0.8rem;
    }
    .step-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
    }
    .step-card p {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    .accordion-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      margin-bottom: 0.75rem;
      overflow: hidden;
    }
    .accordion-trigger {
      width: 100%;
      text-align: left;
      background: transparent;
      border: none;
      padding: 1.2rem 1.5rem;
      color: var(--text-heading);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }
    .accordion-trigger:hover {
      color: var(--color-primary);
    }
    .accordion-trigger i {
      font-size: 0.85rem;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .accordion-trigger[aria-expanded="true"] i {
      transform: rotate(180deg);
      color: var(--color-primary);
    }
    .accordion-content {
      padding: 0 1.5rem 1.25rem 1.5rem;
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.75;
      display: none;
    }
    .accordion-content.is-open {
      display: block;
    }

    .ticket-box {
      background: #13171e;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 2.5rem;
      box-shadow: var(--shadow-card);
      max-width: 820px;
      margin: 0 auto;
    }
    .ticket-box label {
      color: var(--text-heading);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 0.4rem;
      display: block;
    }
    .ticket-box input[type="text"],
    .ticket-box input[type="email"],
    .ticket-box select,
    .ticket-box textarea {
      background: #181d26;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      border-radius: var(--radius-sm);
      padding: 0.65rem 0.85rem;
      font-size: 0.9rem;
      box-shadow: none;
      margin-bottom: 1.25rem;
      width: 100%;
    }
    .ticket-box input:focus,
    .ticket-box select:focus,
    .ticket-box textarea:focus {
      background: #1c222e;
      border-color: var(--color-primary);
      box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .ticket-box textarea {
      min-height: 110px;
      resize: vertical;
    }
    .btn-submit-ticket {
      background: var(--color-primary-gradient);
      border: none;
      color: #0b0d10;
      font-weight: 800;
      padding: 0.75rem 2.2rem;
      border-radius: var(--radius-pill);
      font-size: 0.95rem;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
    }
    .btn-submit-ticket:hover {
      transform: translateY(-2px);
      filter: brightness(1.1);
      box-shadow: 0 6px 18px rgba(245, 158, 11, 0.35);
    }
    .ticket-policy-note {
      margin-top: 1.2rem;
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .site-footer {
      background: #08090c;
      border-top: 1px solid var(--border-line);
      padding: 3.5rem 1.5rem 2rem;
      font-size: 0.86rem;
      color: var(--text-muted);
    }
    .footer-brand h3 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-heading);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-col h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 1rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.55rem;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--color-primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
    }

/* roulang page: category2 */
:root {
      --bg-canvas: #0b0d10;
      --bg-panel: #15181e;
      --bg-panel-hover: #1c212a;
      --color-primary: #f59e0b;
      --color-primary-gradient: linear-gradient(135deg, #f59e0b 0%, #e11d48 100%);
      --color-accent: #e11d48;
      --color-success: #10b981;
      --color-info: #06b6d4;
      --text-heading: #f9fafb;
      --text-body: #d1d5db;
      --text-muted: #9ca3af;
      --border-line: #262d38;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-pill: 9999px;
      --shadow-card: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
      --transition: all 0.25s ease-in-out;
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--bg-canvas);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }

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

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

    /* Top Bar Header */
    .site-top-bar {
      background: rgba(17, 21, 28, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-line);
      padding: 0.75rem 1.5rem;
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: 0.04em;
    }
    .brand-logo i {
      color: var(--color-primary);
      font-size: 1.5rem;
    }

    .nav-search-wrap {
      position: relative;
      width: 100%;
      max-width: 380px;
    }
    .nav-search-wrap input {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      border-radius: var(--radius-pill);
      padding: 0.45rem 1rem 0.45rem 2.5rem;
      font-size: 0.85rem;
      margin: 0;
      box-shadow: none;
      height: 38px;
    }
    .nav-search-wrap input:focus {
      border-color: var(--color-primary);
      background: #181d26;
      box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .nav-search-wrap i {
      position: absolute;
      left: 0.9rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.25rem;
      margin: 0;
      padding: 0;
    }
    .nav-menu a {
      font-weight: 500;
      font-size: 0.95rem;
      padding: 0.35rem 0.6rem;
      border-radius: var(--radius-sm);
    }
    .nav-menu a.active, .nav-menu a:hover {
      color: var(--color-primary);
      background: rgba(245, 158, 11, 0.08);
    }

    .nav-controls {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .bitrate-picker select {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--color-primary);
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 0.35rem 0.6rem;
      margin: 0;
      height: 34px;
      cursor: pointer;
    }
    .btn-client-access {
      background: var(--color-primary-gradient);
      color: #0b0d10 !important;
      font-weight: 700;
      font-size: 0.82rem;
      padding: 0.45rem 1rem;
      border-radius: var(--radius-pill);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-client-access:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    }

    /* Outer Layout Shell (Docs Style Nav) */
    .catalog-wrapper {
      display: flex;
      min-height: calc(100vh - 65px);
      position: relative;
    }
    .docs-sidebar {
      width: 260px;
      background: #101318;
      border-right: 1px solid var(--border-line);
      padding: 1.75rem 1rem;
      flex-shrink: 0;
      position: sticky;
      top: 65px;
      height: calc(100vh - 65px);
      overflow-y: auto;
    }
    .sidebar-group-title {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
      margin: 1.25rem 0 0.5rem 0.5rem;
      font-weight: 700;
    }
    .sidebar-nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .sidebar-nav-list li a {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.45rem 0.75rem;
      font-size: 0.88rem;
      color: var(--text-body);
      border-radius: var(--radius-sm);
    }
    .sidebar-nav-list li a:hover, .sidebar-nav-list li a.active {
      background: var(--bg-panel-hover);
      color: var(--color-primary);
      font-weight: 600;
    }

    .main-viewport {
      flex: 1;
      min-width: 0;
      background: var(--bg-canvas);
    }

    /* Section Components */
    .section-wrap {
      padding: 3.5rem 2rem;
      border-bottom: 1px solid var(--border-line);
    }
    @media (max-width: 640px) {
      .section-wrap {
        padding: 2.25rem 1rem;
      }
    }

    .section-header {
      margin-bottom: 2rem;
      max-width: 820px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.2rem 0.65rem;
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid rgba(245, 158, 11, 0.3);
      color: var(--color-primary);
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 0.75rem;
    }
    .section-title {
      color: var(--text-heading);
      font-size: 1.85rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      margin-bottom: 0.75rem;
      line-height: 1.35;
    }
    .section-lead {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.75;
      margin: 0;
    }

    /* Blueprint 1: Category Header with Before/After Comparison Hero */
    .cat-guide-hero {
      background: #12161d;
      padding: 2.5rem 2rem 3rem;
      border-bottom: 1px solid var(--border-line);
    }
    .breadcrumbs-bar {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .breadcrumbs-bar a {
      color: var(--text-muted);
    }
    .breadcrumbs-bar a:hover {
      color: var(--color-primary);
    }
    .breadcrumbs-bar span {
      color: #4b5563;
    }

    .cat-h1 {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-heading);
      margin-bottom: 0.75rem;
      line-height: 1.25;
    }

    /* Filter Matrix Pill Bars */
    .filter-matrix-wrap {
      margin-top: 1.5rem;
      background: var(--bg-panel);
      padding: 1.25rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-line);
    }
    .filter-row {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 0.75rem;
    }
    .filter-row:last-child {
      margin-bottom: 0;
    }
    .filter-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--text-muted);
      width: 54px;
      flex-shrink: 0;
    }
    .filter-btn {
      background: #0f1217;
      border: 1px solid #232934;
      color: #9ca3af;
      padding: 0.2rem 0.75rem;
      border-radius: var(--radius-pill);
      font-size: 0.8rem;
      cursor: pointer;
      transition: var(--transition);
    }
    .filter-btn:hover {
      color: #ffffff;
      border-color: #3b4455;
    }
    .filter-btn.active {
      background: var(--color-primary);
      color: #0b0d10;
      font-weight: 700;
      border-color: var(--color-primary);
    }

    /* Blueprint Requirement: Before/After stream performance comparison */
    .ba-compare-box {
      margin-top: 2rem;
      background: #0c0f14;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.5rem;
    }
    .ba-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    @media (max-width: 768px) {
      .ba-grid {
        grid-template-columns: 1fr;
      }
    }
    .ba-col {
      padding: 1.25rem;
      border-radius: var(--radius-md);
      position: relative;
    }
    .ba-before {
      background: rgba(225, 29, 72, 0.04);
      border: 1px dashed rgba(225, 29, 72, 0.35);
    }
    .ba-after {
      background: rgba(16, 185, 129, 0.05);
      border: 1px solid rgba(16, 185, 129, 0.4);
    }
    .ba-tag {
      font-size: 0.72rem;
      font-weight: 800;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 0.75rem;
      text-transform: uppercase;
    }
    .ba-tag-before {
      background: rgba(225, 29, 72, 0.2);
      color: var(--color-accent);
    }
    .ba-tag-after {
      background: rgba(16, 185, 129, 0.2);
      color: var(--color-success);
    }
    .ba-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
    }
    .ba-list {
      list-style: none;
      margin: 0;
      padding: 0;
      font-size: 0.86rem;
    }
    .ba-list li {
      margin-bottom: 0.4rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .ba-list-before li i {
      color: var(--color-accent);
    }
    .ba-list-after li i {
      color: var(--color-success);
    }

    /* Section 2: Movie/Drama Poster Grid (2:3 aspect ratio) */
    .drama-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
    }
    @media (max-width: 1024px) {
      .drama-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    @media (max-width: 768px) {
      .drama-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    .drama-card {
      background: var(--bg-panel);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .drama-card:hover {
      transform: translateY(-4px);
      border-color: #3b4455;
      box-shadow: var(--shadow-card);
    }
    .drama-poster-wrap {
      position: relative;
      width: 100%;
      aspect-ratio: 2 / 3;
      overflow: hidden;
      background: #1a1e27;
    }
    .drama-poster-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .drama-card:hover .drama-poster-wrap img {
      transform: scale(1.05);
    }
    .drama-badge-score {
      position: absolute;
      top: 0.6rem;
      right: 0.6rem;
      background: rgba(11, 13, 16, 0.85);
      border: 1px solid rgba(245, 158, 11, 0.6);
      color: var(--color-primary);
      font-weight: 800;
      font-size: 0.78rem;
      padding: 0.15rem 0.45rem;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(4px);
    }
    .drama-badge-res {
      position: absolute;
      bottom: 0.6rem;
      left: 0.6rem;
      background: rgba(6, 182, 212, 0.88);
      color: #0b0d10;
      font-weight: 800;
      font-size: 0.7rem;
      padding: 0.15rem 0.45rem;
      border-radius: var(--radius-sm);
    }
    .drama-badge-ep {
      position: absolute;
      bottom: 0.6rem;
      right: 0.6rem;
      background: rgba(11, 13, 16, 0.85);
      color: #e5e7eb;
      font-size: 0.72rem;
      padding: 0.15rem 0.45rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .drama-meta {
      padding: 0.9rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .drama-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.35rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .drama-subinfo {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
      display: flex;
      justify-content: space-between;
    }
    .drama-action-bar {
      margin-top: auto;
      display: flex;
      gap: 0.5rem;
    }
    .btn-play-trigger {
      flex: 1;
      background: rgba(245, 158, 11, 0.12);
      color: var(--color-primary);
      border: 1px solid rgba(245, 158, 11, 0.25);
      text-align: center;
      padding: 0.35rem 0;
      font-size: 0.78rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.35rem;
    }
    .btn-play-trigger:hover {
      background: var(--color-primary);
      color: #0b0d10;
    }

    /* Section 3: Topic Carousel / Horizontal Spotlights */
    .spotlight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
    }
    @media (max-width: 900px) {
      .spotlight-grid {
        grid-template-columns: 1fr;
      }
    }
    .spotlight-card {
      background: var(--bg-panel);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .spotlight-cover {
      position: relative;
      height: 160px;
      overflow: hidden;
    }
    .spotlight-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .spotlight-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 30%, rgba(21, 24, 30, 0.95) 100%);
    }
    .spotlight-body {
      padding: 1.25rem;
      flex: 1;
    }
    .spotlight-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.5rem;
    }
    .spotlight-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
    }
    .spotlight-stats {
      display: flex;
      justify-content: space-between;
      font-size: 0.8rem;
      color: var(--color-primary);
      border-top: 1px solid var(--border-line);
      padding-top: 0.75rem;
    }

    /* Section 4: Dual Specs & Playback Recommendations */
    .specs-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    @media (max-width: 800px) {
      .specs-grid {
        grid-template-columns: 1fr;
      }
    }
    .spec-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.75rem;
    }
    .spec-header {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 1.25rem;
    }
    .spec-icon-box {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(245, 158, 11, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      font-size: 1.2rem;
    }
    .spec-header h4 {
      margin: 0;
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
    }
    .spec-item-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .spec-item-list li {
      padding: 0.65rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      font-size: 0.88rem;
    }
    .spec-item-list li:last-child {
      border-bottom: none;
    }
    .spec-label {
      color: var(--text-muted);
    }
    .spec-val {
      font-weight: 600;
      color: var(--text-heading);
    }

    /* Section 5: Articles / In-depth Drama Insights */
    .drama-article-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.25rem;
      margin-bottom: 1rem;
      display: flex;
      gap: 1.5rem;
      align-items: center;
      transition: var(--transition);
    }
    .drama-article-card:hover {
      border-color: #3b4455;
      background: var(--bg-panel-hover);
    }
    @media (max-width: 640px) {
      .drama-article-card {
        flex-direction: column;
        align-items: flex-start;
      }
    }
    .drama-article-thumb {
      width: 220px;
      height: 125px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      flex-shrink: 0;
    }
    .drama-article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .drama-article-content h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.4rem;
    }
    .drama-article-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 0.5rem;
    }
    .drama-article-meta {
      font-size: 0.78rem;
      color: #6b7280;
      display: flex;
      gap: 1rem;
    }

    /* Section 6: Dedicated FAQs */
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .faq-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 1.1rem 1.25rem;
      background: none;
      border: none;
      color: var(--text-heading);
      font-size: 0.95rem;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-trigger i {
      color: var(--color-primary);
      transition: transform 0.25s ease;
    }
    .faq-body {
      padding: 0 1.25rem 1.1rem;
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      padding-top: 0.85rem;
    }

    /* Section 7: Interaction and Missing Episode Feedback Form */
    .feedback-form-box {
      background: #13171e;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.5rem;
    }
    .feedback-input-row {
      display: flex;
      gap: 0.75rem;
      flex-wrap: wrap;
    }
    .feedback-input-row input {
      flex: 2;
      min-width: 220px;
      background: #0d1015;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      border-radius: var(--radius-sm);
      padding: 0.65rem 1rem;
      font-size: 0.88rem;
    }
    .feedback-input-row input:focus {
      border-color: var(--color-primary);
      outline: none;
    }
    .feedback-input-row select {
      flex: 1;
      min-width: 160px;
      background: #0d1015;
      border: 1px solid var(--border-line);
      color: var(--text-body);
      border-radius: var(--radius-sm);
      padding: 0.65rem 1rem;
      font-size: 0.88rem;
    }
    .feedback-input-row button {
      background: var(--color-primary-gradient);
      color: #0b0d10;
      border: none;
      font-weight: 700;
      padding: 0.65rem 1.5rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
    }
    .feedback-input-row button:hover {
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
      transform: translateY(-1px);
    }

    /* Single Load More Button Container */
    .load-more-wrap {
      text-align: center;
      margin-top: 2rem;
    }
    .btn-load-more {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      padding: 0.75rem 2.2rem;
      border-radius: var(--radius-pill);
      font-size: 0.9rem;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
    }
    .btn-load-more:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: #1c212b;
    }

    /* Site Footer */
    .site-footer {
      background: #0d1015;
      border-top: 1px solid var(--border-line);
      padding: 3.5rem 1.5rem 2rem;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .footer-brand h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-heading);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      color: #9ca3af;
      max-width: 480px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 1rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.5rem;
    }
    .footer-links a {
      color: #9ca3af;
      font-size: 0.86rem;
    }
    .footer-links a:hover {
      color: var(--color-primary);
      padding-left: 4px;
    }
    .footer-bottom {
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.82rem;
    }

/* roulang page: category1 */
:root {
        --bg-canvas: #0b0d10;
        --bg-panel: #15181e;
        --bg-panel-hover: #1c212a;
        --color-primary: #f59e0b;
        --color-primary-gradient: linear-gradient(135deg, #f59e0b 0%, #e11d48 100%);
        --color-gold-vip: linear-gradient(135deg, #ffd700 0%, #d4af37 50%, #aa7c11 100%);
        --color-accent: #e11d48;
        --color-success: #10b981;
        --color-info: #06b6d4;
        --text-heading: #f9fafb;
        --text-body: #d1d5db;
        --text-muted: #9ca3af;
        --border-line: #262d38;
        --border-subtle: rgba(255, 255, 255, 0.08);
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-pill: 9999px;
        --shadow-card: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
        --transition: all 0.25s ease-in-out;
    }
    
    * {
        box-sizing: border-box;
    }

    body {
        background-color: var(--bg-canvas);
        color: var(--text-body);
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
        line-height: 1.75;
        font-size: 15px;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
        margin: 0;
        padding: 0;
    }

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

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

    /* Top Bar */
    .site-top-bar {
        background: rgba(15, 18, 23, 0.95);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-line);
        position: sticky;
        top: 0;
        z-index: 1000;
        padding: 0.75rem 1.5rem;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--text-heading);
        letter-spacing: 0.04em;
    }
    .brand-logo i {
        color: var(--color-primary);
        font-size: 1.5rem;
    }
    .nav-search-wrap {
        position: relative;
        width: 100%;
        max-width: 360px;
    }
    .nav-search-wrap input {
        background: #14181f;
        border: 1px solid var(--border-line);
        color: var(--text-heading);
        border-radius: var(--radius-pill);
        padding: 0.45rem 1rem 0.45rem 2.5rem;
        font-size: 0.85rem;
        margin: 0;
        box-shadow: none;
        height: 38px;
    }
    .nav-search-wrap input:focus {
        border-color: var(--color-primary);
        background: #181d26;
        box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .nav-search-wrap i {
        position: absolute;
        left: 0.9rem;
        top: 50%;
        transform: translateY(-50%);
        color: var(--text-muted);
        font-size: 0.85rem;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        list-style: none;
        gap: 1.25rem;
        margin: 0;
    }
    .nav-menu a {
        font-weight: 500;
        font-size: 0.95rem;
        padding: 0.35rem 0.6rem;
        border-radius: var(--radius-sm);
    }
    .nav-menu a.active, .nav-menu a:hover {
        color: var(--color-primary);
        background: rgba(245, 158, 11, 0.08);
    }
    .nav-controls {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    .bitrate-picker select {
        background: #14181f;
        border: 1px solid var(--border-line);
        color: var(--color-primary);
        font-size: 0.8rem;
        font-weight: 600;
        border-radius: var(--radius-sm);
        padding: 0.35rem 0.6rem;
        margin: 0;
        height: 34px;
        cursor: pointer;
    }
    .btn-client-access {
        background: var(--color-primary-gradient);
        color: #0b0d10 !important;
        font-weight: 700;
        font-size: 0.82rem;
        padding: 0.45rem 1rem;
        border-radius: var(--radius-pill);
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-client-access:hover {
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    }

    /* Page Sections */
    .section-wrap {
        padding: 4.5rem 1.5rem;
        border-bottom: 1px solid var(--border-line);
        position: relative;
    }
    .section-header {
        margin-bottom: 2.5rem;
    }
    .section-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.2rem 0.65rem;
        background: rgba(245, 158, 11, 0.12);
        border: 1px solid rgba(245, 158, 11, 0.3);
        color: var(--color-primary);
        border-radius: var(--radius-sm);
        font-size: 0.75rem;
        font-weight: 700;
        letter-spacing: 0.05em;
        margin-bottom: 0.75rem;
    }
    .section-title {
        color: var(--text-heading);
        font-size: 1.85rem;
        font-weight: 800;
        letter-spacing: 0.02em;
        margin-bottom: 0.75rem;
        line-height: 1.35;
    }
    .section-lead {
        color: var(--text-muted);
        font-size: 0.98rem;
        line-height: 1.75;
        margin: 0;
        max-width: 820px;
    }

    /* Hero: Black-Gold VIP Club Header */
    .vip-hero-section {
        background: radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 60%),
                    radial-gradient(circle at 10% 80%, rgba(225, 29, 72, 0.06) 0%, transparent 50%),
                    #0d0f14;
        border-bottom: 1px solid var(--border-line);
        padding: 3.5rem 1.5rem 4rem;
        position: relative;
    }
    .breadcrumb-nav {
        margin-bottom: 1.5rem;
        font-size: 0.85rem;
        color: var(--text-muted);
    }
    .breadcrumb-nav a {
        color: var(--text-muted);
    }
    .breadcrumb-nav a:hover {
        color: var(--color-primary);
    }
    .breadcrumb-nav span {
        margin: 0 0.5rem;
        color: var(--border-line);
    }
    .vip-badge-card {
        background: linear-gradient(145deg, #1d1912 0%, #13151b 100%);
        border: 1px solid rgba(245, 158, 11, 0.35);
        border-radius: var(--radius-md);
        padding: 1.75rem;
        box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.7);
        position: relative;
        overflow: hidden;
    }
    .vip-badge-card::after {
        content: "";
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 100%;
        background: linear-gradient(45deg, transparent 40%, rgba(245, 158, 11, 0.12) 50%, transparent 60%);
        transform: rotate(30deg);
        pointer-events: none;
    }
    .vip-level-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: var(--color-gold-vip);
        color: #111;
        font-size: 0.75rem;
        font-weight: 900;
        padding: 0.25rem 0.75rem;
        border-radius: var(--radius-pill);
        letter-spacing: 0.06em;
        margin-bottom: 1rem;
    }
    .vip-badge-title {
        color: #fff;
        font-size: 1.25rem;
        font-weight: 800;
        margin-bottom: 0.5rem;
    }
    .vip-perks-list {
        list-style: none;
        padding: 0;
        margin: 1rem 0 1.5rem;
    }
    .vip-perks-list li {
        font-size: 0.86rem;
        color: #d1d5db;
        display: flex;
        align-items: center;
        gap: 0.6rem;
        margin-bottom: 0.45rem;
    }
    .vip-perks-list li i {
        color: var(--color-primary);
        font-size: 0.8rem;
    }
    .btn-gold-vip {
        display: block;
        text-align: center;
        background: var(--color-gold-vip);
        color: #111 !important;
        font-weight: 800;
        font-size: 0.9rem;
        padding: 0.7rem 1.25rem;
        border-radius: var(--radius-sm);
        letter-spacing: 0.03em;
        box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
    }
    .btn-gold-vip:hover {
        box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
        filter: brightness(1.08);
    }

    /* Multi-dimensional Filter Bar */
    .filter-group-wrap {
        background: var(--bg-panel);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-md);
        padding: 1.25rem 1.5rem;
        margin-top: 2rem;
    }
    .filter-row {
        display: flex;
        align-items: flex-start;
        padding: 0.5rem 0;
        border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    }
    .filter-row:last-child {
        border-bottom: none;
    }
    .filter-label {
        font-size: 0.84rem;
        color: var(--text-muted);
        font-weight: 600;
        width: 80px;
        flex-shrink: 0;
        padding-top: 0.25rem;
    }
    .filter-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.4rem 0.6rem;
    }
    .filter-btn {
        background: transparent;
        color: var(--text-body);
        font-size: 0.82rem;
        padding: 0.2rem 0.65rem;
        border-radius: var(--radius-sm);
        border: 1px solid transparent;
        cursor: pointer;
        transition: var(--transition);
    }
    .filter-btn:hover {
        color: var(--color-primary);
        background: rgba(255, 255, 255, 0.04);
    }
    .filter-btn.active {
        background: rgba(245, 158, 11, 0.15);
        color: var(--color-primary);
        border-color: rgba(245, 158, 11, 0.3);
        font-weight: 700;
    }

    /* Poster Grid (2:3 aspect ratio) */
    .movie-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
    .movie-card {
        background: var(--bg-panel);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        position: relative;
    }
    .movie-card:hover {
        transform: translateY(-4px);
        border-color: rgba(245, 158, 11, 0.4);
        box-shadow: var(--shadow-card);
    }
    .movie-poster-wrap {
        position: relative;
        width: 100%;
        padding-top: 142%; /* ~ 2:3 aspect ratio */
        background: #11141a;
        overflow: hidden;
    }
    .movie-poster-wrap img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .movie-card:hover .movie-poster-wrap img {
        transform: scale(1.05);
    }
    .movie-badge-quality {
        position: absolute;
        top: 0.6rem;
        left: 0.6rem;
        background: rgba(11, 13, 16, 0.85);
        backdrop-filter: blur(4px);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: #fff;
        font-size: 0.7rem;
        font-weight: 700;
        padding: 0.15rem 0.45rem;
        border-radius: var(--radius-sm);
        z-index: 2;
    }
    .movie-badge-rating {
        position: absolute;
        top: 0.6rem;
        right: 0.6rem;
        background: var(--color-primary-gradient);
        color: #0b0d10;
        font-size: 0.72rem;
        font-weight: 900;
        padding: 0.15rem 0.45rem;
        border-radius: var(--radius-sm);
        z-index: 2;
    }
    .movie-overlay-play {
        position: absolute;
        inset: 0;
        background: rgba(11, 13, 16, 0.5);
        opacity: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        z-index: 3;
    }
    .movie-overlay-play i {
        font-size: 2.75rem;
        color: var(--color-primary);
        filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.6));
    }
    .movie-card:hover .movie-overlay-play {
        opacity: 1;
    }
    .movie-info {
        padding: 1rem 1.15rem;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .movie-title {
        font-size: 1.02rem;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 0.35rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .movie-meta-tags {
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-bottom: 0.5rem;
        display: flex;
        gap: 0.5rem;
    }
    .movie-desc-brief {
        font-size: 0.84rem;
        color: #a0aec0;
        line-height: 1.55;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-top: auto;
    }
    .load-more-btn-wrap {
        margin-top: 3rem;
        text-align: center;
    }
    .btn-load-more {
        background: #181d26;
        border: 1px solid var(--border-line);
        color: var(--text-heading);
        font-size: 0.9rem;
        font-weight: 600;
        padding: 0.75rem 2.5rem;
        border-radius: var(--radius-pill);
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
        transition: var(--transition);
    }
    .btn-load-more:hover {
        background: var(--bg-panel-hover);
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    /* Feature Collections Horizontal */
    .special-topic-card {
        background: var(--bg-panel);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        height: 100%;
        transition: var(--transition);
    }
    .special-topic-card:hover {
        transform: translateY(-3px);
        border-color: rgba(245, 158, 11, 0.4);
        box-shadow: var(--shadow-card);
    }
    .topic-cover-wrap {
        position: relative;
        height: 160px;
        overflow: hidden;
    }
    .topic-cover-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .special-topic-card:hover .topic-cover-wrap img {
        transform: scale(1.05);
    }
    .topic-badge-count {
        position: absolute;
        bottom: 0.6rem;
        right: 0.6rem;
        background: rgba(11, 13, 16, 0.85);
        color: var(--color-primary);
        border: 1px solid rgba(245, 158, 11, 0.4);
        font-size: 0.72rem;
        font-weight: 700;
        padding: 0.15rem 0.5rem;
        border-radius: var(--radius-sm);
    }
    .topic-body {
        padding: 1.25rem;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .topic-title {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 0.5rem;
    }
    .topic-desc {
        font-size: 0.86rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
    }

    /* Technical Specs & Audio-Visual Specs */
    .specs-card {
        background: var(--bg-panel);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 2rem;
        height: 100%;
    }
    .specs-card-header {
        display: flex;
        align-items: center;
        gap: 0.85rem;
        margin-bottom: 1.25rem;
        padding-bottom: 1rem;
        border-bottom: 1px solid var(--border-line);
    }
    .specs-icon {
        width: 44px;
        height: 44px;
        background: rgba(245, 158, 11, 0.12);
        color: var(--color-primary);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
    }
    .specs-card-title {
        font-size: 1.18rem;
        font-weight: 700;
        color: var(--text-heading);
        margin: 0;
    }
    .specs-item-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.65rem 0;
        border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
        font-size: 0.88rem;
    }
    .specs-item-row:last-child {
        border-bottom: none;
    }
    .specs-name {
        color: var(--text-muted);
    }
    .specs-val {
        color: var(--text-heading);
        font-weight: 600;
    }

    /* Film Reviews & Insight Articles */
    .article-item-card {
        background: var(--bg-panel);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        overflow: hidden;
        display: flex;
        gap: 1.5rem;
        padding: 1.25rem;
        transition: var(--transition);
        align-items: center;
    }
    .article-item-card:hover {
        border-color: rgba(245, 158, 11, 0.35);
        background: var(--bg-panel-hover);
    }
    .article-thumb {
        width: 190px;
        height: 120px;
        flex-shrink: 0;
        border-radius: var(--radius-sm);
        overflow: hidden;
    }
    .article-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .article-content {
        flex: 1;
        min-width: 0;
    }
    .article-tag {
        font-size: 0.72rem;
        color: var(--color-primary);
        background: rgba(245, 158, 11, 0.1);
        padding: 0.15rem 0.5rem;
        border-radius: var(--radius-sm);
        font-weight: 700;
        display: inline-block;
        margin-bottom: 0.4rem;
    }
    .article-heading {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 0.4rem;
        line-height: 1.4;
    }
    .article-summary {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 0.5rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .article-meta {
        font-size: 0.78rem;
        color: #718096;
        display: flex;
        gap: 1rem;
    }

    /* Accordion FAQ */
    .faq-accordion {
        background: transparent;
        border: none;
        margin: 0;
    }
    .faq-accordion-item {
        background: var(--bg-panel);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md) !important;
        margin-bottom: 1rem;
        overflow: hidden;
    }
    .faq-accordion-title {
        border: none;
        padding: 1.25rem 1.5rem;
        color: var(--text-heading);
        font-size: 1.02rem;
        font-weight: 700;
        display: flex;
        justify-content: space-between;
        align-items: center;
        background: transparent;
        cursor: pointer;
        width: 100%;
        text-align: left;
    }
    .faq-accordion-title:hover {
        background: rgba(255, 255, 255, 0.02);
        color: var(--color-primary);
    }
    .faq-accordion-title i {
        color: var(--color-primary);
        font-size: 0.85rem;
        transition: transform 0.3s ease;
    }
    .faq-accordion-content {
        padding: 0 1.5rem 1.25rem;
        color: var(--text-muted);
        font-size: 0.9rem;
        line-height: 1.75;
        border: none;
        background: transparent;
    }

    /* Single-row Feedback Action */
    .feedback-box {
        background: linear-gradient(145deg, #181d26 0%, #12151b 100%);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-md);
        padding: 2.25rem 2rem;
    }
    .feedback-form-row {
        display: flex;
        gap: 0.75rem;
        margin-top: 1.25rem;
    }
    .feedback-form-row input {
        background: #0f1217;
        border: 1px solid var(--border-line);
        color: var(--text-heading);
        border-radius: var(--radius-sm);
        padding: 0.65rem 1rem;
        font-size: 0.9rem;
        margin: 0;
        flex: 1;
        box-shadow: none;
        height: 44px;
    }
    .feedback-form-row input:focus {
        border-color: var(--color-primary);
        background: #141820;
        box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .feedback-form-row button {
        background: var(--color-primary-gradient);
        color: #0b0d10;
        font-weight: 800;
        font-size: 0.9rem;
        padding: 0 1.75rem;
        border: none;
        border-radius: var(--radius-sm);
        cursor: pointer;
        height: 44px;
        white-space: nowrap;
        transition: var(--transition);
    }
    .feedback-form-row button:hover {
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.35);
        transform: translateY(-1px);
    }

    /* Footer */
    .site-footer {
        background: #080a0d;
        border-top: 1px solid var(--border-line);
        padding: 4.5rem 1.5rem 2rem;
        color: var(--text-muted);
    }
    .footer-brand h3 {
        color: var(--text-heading);
        font-size: 1.4rem;
        font-weight: 800;
        margin-bottom: 1rem;
    }
    .footer-brand p {
        font-size: 0.88rem;
        line-height: 1.8;
        color: #8b949e;
        max-width: 480px;
    }
    .footer-col h4 {
        color: var(--text-heading);
        font-size: 0.95rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 1.25rem;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 0.65rem;
    }
    .footer-links a {
        color: #9ca3af;
        font-size: 0.86rem;
    }
    .footer-links a:hover {
        color: var(--color-primary);
        padding-left: 4px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        margin-top: 3.5rem;
        padding-top: 1.5rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 1rem;
        font-size: 0.82rem;
        color: #6b7280;
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .movie-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }
    @media (max-width: 768px) {
        .movie-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        .section-wrap {
            padding: 3rem 1rem;
        }
        .article-item-card {
            flex-direction: column;
            align-items: flex-start;
        }
        .article-thumb {
            width: 100%;
            height: 160px;
        }
        .feedback-form-row {
            flex-direction: column;
        }
        .filter-label {
            width: 100%;
            margin-bottom: 0.4rem;
        }
        .filter-row {
            flex-direction: column;
        }
    }

/* roulang page: category3 */
:root {
      --bg-canvas: #0b0d10;
      --bg-panel: #15181e;
      --bg-panel-hover: #1c212a;
      --color-primary: #f59e0b;
      --color-primary-gradient: linear-gradient(135deg, #f59e0b 0%, #e11d48 100%);
      --color-accent: #e11d48;
      --color-success: #10b981;
      --color-info: #06b6d4;
      --text-heading: #f9fafb;
      --text-body: #d1d5db;
      --text-muted: #9ca3af;
      --border-line: #262d38;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-pill: 9999px;
      --shadow-card: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
      --transition: all 0.25s ease-in-out;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: var(--text-body);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover, a:focus {
      color: var(--color-primary);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-top-bar {
      background: rgba(11, 13, 16, 0.95);
      border-bottom: 1px solid var(--border-line);
      padding: 0.75rem 1.5rem;
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(10px);
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: 0.04em;
    }
    .brand-logo i {
      color: var(--color-primary);
      font-size: 1.5rem;
    }
    .nav-search-wrap {
      position: relative;
      width: 100%;
      max-width: 380px;
    }
    .nav-search-wrap input {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      border-radius: var(--radius-pill);
      padding: 0.45rem 1rem 0.45rem 2.5rem;
      font-size: 0.85rem;
      margin: 0;
      box-shadow: none;
      height: 38px;
    }
    .nav-search-wrap input:focus {
      border-color: var(--color-primary);
      background: #181d26;
      box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .nav-search-wrap i {
      position: absolute;
      left: 0.9rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 0.85rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.25rem;
      margin: 0;
    }
    .nav-menu a {
      font-weight: 500;
      font-size: 0.95rem;
      padding: 0.35rem 0.6rem;
      border-radius: var(--radius-sm);
    }
    .nav-menu a.active, .nav-menu a:hover {
      color: var(--color-primary);
      background: rgba(245, 158, 11, 0.08);
    }
    .nav-controls {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .bitrate-picker select {
      background: #14181f;
      border: 1px solid var(--border-line);
      color: var(--color-primary);
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 0.35rem 0.6rem;
      margin: 0;
      height: 34px;
      cursor: pointer;
    }
    .btn-client-access {
      background: var(--color-primary-gradient);
      color: #0b0d10 !important;
      font-weight: 700;
      font-size: 0.82rem;
      padding: 0.45rem 1rem;
      border-radius: var(--radius-pill);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-client-access:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    }

    /* Category Specific Layout */
    .docs-layout-container {
      display: flex;
      min-height: calc(100vh - 65px);
    }
    .docs-sidebar {
      width: 260px;
      flex-shrink: 0;
      background: #11141a;
      border-right: 1px solid var(--border-line);
      padding: 2rem 1.25rem;
    }
    .docs-sidebar-sticky {
      position: sticky;
      top: 85px;
    }
    .sidebar-group-title {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
      margin: 1.25rem 0 0.5rem 0.5rem;
      font-weight: 700;
    }
    .sidebar-nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .sidebar-nav-list li a {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.5rem 0.75rem;
      font-size: 0.88rem;
      color: var(--text-body);
      border-radius: var(--radius-sm);
    }
    .sidebar-nav-list li a:hover, .sidebar-nav-list li a.active {
      background: var(--bg-panel-hover);
      color: var(--color-primary);
      font-weight: 600;
    }
    .main-viewport {
      flex: 1;
      min-width: 0;
      background: var(--bg-canvas);
    }

    /* Section Components */
    .section-wrap {
      padding: 3.5rem 2rem;
      border-bottom: 1px solid var(--border-line);
    }
    @media (max-width: 768px) {
      .section-wrap {
        padding: 2.5rem 1.25rem;
      }
      .docs-sidebar {
        display: none;
      }
    }
    .section-header {
      margin-bottom: 2rem;
      max-width: 840px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.2rem 0.65rem;
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid rgba(245, 158, 11, 0.3);
      color: var(--color-primary);
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 0.75rem;
    }
    .section-title {
      color: var(--text-heading);
      font-size: 1.75rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      margin-bottom: 0.65rem;
      line-height: 1.35;
    }
    .section-lead {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      margin: 0;
    }

    /* Tool Hero Header */
    .category-hero-panel {
      background: radial-gradient(circle at 50% 20%, #1c212a 0%, #0e1116 100%);
      padding: 3.5rem 2rem 2.5rem;
      border-bottom: 1px solid var(--border-line);
      text-align: center;
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .breadcrumb-nav a {
      color: var(--text-muted);
    }
    .breadcrumb-nav a:hover {
      color: var(--color-primary);
    }
    .category-h1 {
      color: #ffffff;
      font-size: 2.2rem;
      font-weight: 900;
      margin-bottom: 1rem;
      letter-spacing: -0.01em;
    }
    .category-hero-desc {
      max-width: 760px;
      margin: 0 auto 2rem;
      color: var(--text-body);
      font-size: 0.98rem;
      line-height: 1.8;
    }
    .hero-search-centered {
      max-width: 640px;
      margin: 0 auto 1.5rem;
      position: relative;
    }
    .hero-search-centered input {
      background: #15181e;
      border: 1px solid var(--border-line);
      color: #ffffff;
      padding: 0.8rem 1.25rem 0.8rem 3rem;
      border-radius: var(--radius-pill);
      height: 50px;
      font-size: 0.95rem;
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    }
    .hero-search-centered input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.25);
    }
    .hero-search-centered i {
      position: absolute;
      left: 1.25rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-primary);
      font-size: 1.1rem;
    }
    .hero-hot-tags {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .hero-hot-tags span {
      font-weight: 600;
    }
    .tag-pill {
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border-subtle);
      color: var(--text-body);
      padding: 0.2rem 0.65rem;
      border-radius: var(--radius-pill);
      font-size: 0.78rem;
    }
    .tag-pill:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }

    /* Filter Matrix */
    .filter-matrix-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.25rem 1.5rem;
      margin-top: 2rem;
      text-align: left;
    }
    .filter-row {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding: 0.5rem 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    }
    .filter-row:last-child {
      border-bottom: none;
    }
    .filter-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 700;
      min-width: 48px;
      padding-top: 0.2rem;
    }
    .filter-items {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
    }
    .filter-btn {
      padding: 0.2rem 0.65rem;
      font-size: 0.8rem;
      color: var(--text-body);
      border-radius: var(--radius-sm);
      cursor: pointer;
      background: transparent;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .filter-btn:hover {
      color: var(--color-primary);
    }
    .filter-btn.active {
      background: rgba(245, 158, 11, 0.15);
      border-color: var(--color-primary);
      color: var(--color-primary);
      font-weight: 700;
    }

    /* 2:3 Anime Poster Cards */
    .poster-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 1.5rem;
    }
    @media (max-width: 640px) {
      .poster-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.85rem;
      }
    }
    .poster-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .poster-card:hover {
      transform: translateY(-4px);
      border-color: var(--color-primary);
      box-shadow: var(--shadow-card);
    }
    .poster-thumb-wrap {
      position: relative;
      aspect-ratio: 2 / 3;
      overflow: hidden;
      background: #000000;
    }
    .poster-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .poster-card:hover .poster-thumb-wrap img {
      transform: scale(1.05);
    }
    .badge-resolution {
      position: absolute;
      top: 0.6rem;
      left: 0.6rem;
      background: rgba(11, 13, 16, 0.85);
      color: var(--color-info);
      border: 1px solid rgba(6, 182, 212, 0.4);
      font-size: 0.68rem;
      font-weight: 800;
      padding: 0.15rem 0.45rem;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(4px);
    }
    .badge-score {
      position: absolute;
      top: 0.6rem;
      right: 0.6rem;
      background: var(--color-primary-gradient);
      color: #0b0d10;
      font-size: 0.72rem;
      font-weight: 900;
      padding: 0.15rem 0.45rem;
      border-radius: var(--radius-sm);
    }
    .poster-meta-bar {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      background: linear-gradient(0deg, rgba(11, 13, 16, 0.95) 0%, transparent 100%);
      padding: 1.25rem 0.65rem 0.4rem;
      font-size: 0.75rem;
      color: #e5e7eb;
      font-weight: 600;
    }
    .poster-body {
      padding: 0.85rem 0.75rem 1rem;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .poster-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 0.35rem;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 1;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .poster-sub {
      font-size: 0.76rem;
      color: var(--text-muted);
      display: -webkit-box;
      -webkit-line-clamp: 1;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .btn-load-more {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      background: #191e27;
      border: 1px solid var(--border-line);
      color: var(--text-heading);
      padding: 0.75rem 2.5rem;
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      margin: 2.5rem auto 0;
    }
    .btn-load-more:hover {
      background: var(--bg-panel-hover);
      border-color: var(--color-primary);
      color: var(--color-primary);
      box-shadow: 0 4px 16px rgba(0,0,0,0.5);
    }

    /* Topic Horizontal Cards */
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.25rem;
    }
    .topic-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .topic-card:hover {
      border-color: rgba(245, 158, 11, 0.4);
      background: var(--bg-panel-hover);
    }
    .topic-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--color-primary-gradient);
    }
    .topic-card h4 {
      color: var(--text-heading);
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .topic-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
    }
    .topic-meta-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.78rem;
      color: var(--text-muted);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 0.75rem;
    }

    /* Spec Cards */
    .spec-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.25rem;
    }
    .spec-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      position: relative;
    }
    .spec-icon-header {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      margin-bottom: 1rem;
    }
    .spec-icon-box {
      width: 42px;
      height: 42px;
      background: rgba(245, 158, 11, 0.1);
      border: 1px solid rgba(245, 158, 11, 0.25);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      font-size: 1.2rem;
    }
    .spec-icon-header h4 {
      margin: 0;
      font-size: 1.05rem;
      color: var(--text-heading);
      font-weight: 700;
    }
    .spec-list {
      list-style: none;
      margin: 0;
      padding: 0;
      font-size: 0.88rem;
    }
    .spec-list li {
      display: flex;
      align-items: baseline;
      gap: 0.5rem;
      margin-bottom: 0.65rem;
      color: var(--text-body);
    }
    .spec-list li i {
      color: var(--color-success);
      font-size: 0.75rem;
    }

    /* Article Cards */
    .article-deck {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
      gap: 1.25rem;
    }
    .article-item {
      background: var(--bg-panel);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .article-item:hover {
      border-color: var(--border-line);
      box-shadow: var(--shadow-card);
      transform: translateY(-2px);
    }
    .article-img-wrap {
      aspect-ratio: 16 / 9;
      background: #11141a;
      overflow: hidden;
    }
    .article-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .article-item:hover .article-img-wrap img {
      transform: scale(1.04);
    }
    .article-info {
      padding: 1.25rem;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-title {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-heading);
      line-height: 1.5;
      margin-bottom: 0.5rem;
    }
    .article-brief {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-foot-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 0.75rem;
    }

    /* FAQ Component */
    .faq-stack {
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .faq-accordion {
      background: var(--bg-panel);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-question {
      padding: 1.15rem 1.25rem;
      font-weight: 700;
      font-size: 0.96rem;
      color: var(--text-heading);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      background: transparent;
      user-select: none;
    }
    .faq-question:hover {
      background: var(--bg-panel-hover);
    }
    .faq-question i {
      font-size: 0.85rem;
      color: var(--color-primary);
      transition: transform 0.25s ease;
    }
    .faq-accordion.open .faq-question i {
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 1.25rem 1.25rem;
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
    }
    .faq-accordion.open .faq-answer {
      display: block;
    }

    /* Inline Feedback Strip */
    .feedback-strip {
      background: linear-gradient(90deg, #161b22 0%, #1a202c 100%);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 1.5rem 1.75rem;
    }
    .feedback-form-inline {
      display: flex;
      gap: 0.75rem;
      align-items: center;
      margin-top: 1rem;
      flex-wrap: wrap;
    }
    .feedback-form-inline input {
      flex: 1;
      min-width: 240px;
      background: #0f1217;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      color: var(--text-heading);
      padding: 0.6rem 1rem;
      margin: 0;
      height: 42px;
      font-size: 0.88rem;
    }
    .feedback-form-inline input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    }
    .feedback-form-inline select {
      width: 180px;
      background: #0f1217;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      color: var(--text-body);
      padding: 0.6rem 0.8rem;
      margin: 0;
      height: 42px;
      font-size: 0.85rem;
    }
    .btn-submit-feedback {
      background: var(--color-primary-gradient);
      border: none;
      color: #0b0d10;
      font-weight: 800;
      font-size: 0.88rem;
      padding: 0 1.5rem;
      height: 42px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      transition: var(--transition);
    }
    .btn-submit-feedback:hover {
      opacity: 0.92;
      transform: translateY(-1px);
    }

    /* Footer Shared */
    .site-footer {
      background: #07090c;
      border-top: 1px solid var(--border-line);
      padding: 4.5rem 1.5rem 2rem;
      font-size: 0.88rem;
    }
    .footer-brand h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-heading);
      margin-bottom: 0.85rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      color: var(--text-muted);
      line-height: 1.7;
      font-size: 0.85rem;
      max-width: 440px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 1rem;
      letter-spacing: 0.02em;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: var(--text-muted);
      font-size: 0.85rem;
    }
    .footer-links a:hover {
      color: var(--color-primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-line);
      margin-top: 3rem;
      padding-top: 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      color: var(--text-muted);
      font-size: 0.78rem;
    }