/* roulang page: index */
:root {
      --primary: #e11d48;
      --primary-dark: #be123c;
      --primary-light: #fb7185;
      --accent: #a855f7;
      --accent-dark: #7e22ce;
      --bg: #faf7fb;
      --surface: #ffffff;
      --surface-alt: #f5f0f7;
      --text: #1e1b29;
      --text-soft: #4b4453;
      --text-muted: #7b7485;
      --border: #e6dfea;
      --border-strong: #d5ccdb;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
      --shadow-lg: 0 18px 48px rgba(0,0,0,0.09);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      --container-width: 1180px;
      --header-height: 72px;
      --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-sans);
      line-height: 1.6;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    button,
    input,
    select,
    textarea {
      font: inherit;
      color: inherit;
      background: none;
      border: none;
      outline: none;
    }

    button {
      cursor: pointer;
    }

    ul,
    ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-inline: auto;
      padding-inline: 24px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 16px;
      z-index: 100;
      padding: 16px 20px 0;
      max-width: 1180px;
      margin-inline: auto;
      pointer-events: auto;
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      padding: 12px 26px;
      transition: background var(--transition), box-shadow var(--transition);
    }

    .navbar:hover {
      box-shadow: var(--shadow-lg);
    }

    .logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .logo em {
      font-style: normal;
      color: var(--primary);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 10px 18px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-soft);
      transition: background var(--transition), color var(--transition);
    }

    .nav-link:hover {
      background: var(--surface-alt);
      color: var(--text);
    }

    .nav-link.active {
      background: var(--primary);
      color: #fff;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: 999px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      transition: background var(--transition), transform var(--transition);
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--border);
      background: var(--surface);
      place-items: center;
      color: var(--text);
      font-size: 1.25rem;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 1rem;
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
      will-change: transform;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.28);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(225, 29, 72, 0.32);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.24);
    }

    .btn-ghost {
      background: rgba(255,255,255,0.08);
      color: #fff;
      border: 1px solid rgba(255,255,255,0.25);
      backdrop-filter: blur(8px);
    }

    .btn-ghost:hover {
      background: rgba(255,255,255,0.18);
      border-color: rgba(255,255,255,0.4);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      padding: 64px 0 80px;
      background-size: cover;
      background-position: center;
      border-radius: 0 0 var(--radius-xl) var(--radius-xl);
      overflow: hidden;
      margin-top: -16px;
    }

    .hero::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(25,15,40,0.55), rgba(50,15,50,0.35));
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content {
      color: #fff;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.14);
      border: 1px solid rgba(255,255,255,0.22);
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.01em;
      margin-bottom: 24px;
      backdrop-filter: blur(8px);
    }

    .hero h1 {
      font-size: clamp(2.2rem, 4.5vw, 3.6rem);
      line-height: 1.2;
      font-weight: 900;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
      text-wrap: balance;
    }

    .hero-lead {
      font-size: 1.08rem;
      max-width: 640px;
      color: rgba(255,255,255,0.86);
      margin-bottom: 32px;
      text-wrap: pretty;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .metric-card {
      background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.22);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(10px);
      transition: background var(--transition), transform var(--transition);
    }

    .metric-card:hover {
      background: rgba(255,255,255,0.2);
      transform: translateY(-4px);
    }

    .metric-value {
      font-size: 2rem;
      font-weight: 900;
      color: #fff;
      letter-spacing: -0.02em;
    }

    .metric-label {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.8);
      margin-top: 6px;
      font-weight: 500;
    }

    /* ===== Section base ===== */
    main section {
      padding: 72px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 999px;
      background: rgba(225,29,72,0.08);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 16px;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3.5vw, 2.5rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.25;
      margin-bottom: 16px;
      color: var(--text);
      text-wrap: balance;
    }

    .section-head p {
      font-size: 1.05rem;
      color: var(--text-soft);
      max-width: 680px;
    }

    /* ===== Metrics strip ===== */
    .metrics-strip {
      background: var(--surface);
      border-block: 1px solid var(--border);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-item {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      text-align: center;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .metric-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .metric-item i {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .metric-num {
      display: block;
      font-size: 2.2rem;
      font-weight: 900;
      letter-spacing: -0.02em;
      color: var(--text);
    }

    .metric-name {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* ===== Search panel ===== */
    .search-panel {
      background: var(--bg);
    }

    .search-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-sm);
      max-width: 900px;
      margin-inline: auto;
    }

    .search-box h2 {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 8px;
    }

    .search-box p {
      color: var(--text-soft);
      margin-bottom: 28px;
    }

    .search-form {
      display: flex;
      gap: 12px;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }

    .search-form input {
      flex: 1 1 240px;
      padding: 14px 20px;
      border: 2px solid var(--border);
      border-radius: 999px;
      font-size: 1rem;
      background: var(--surface-alt);
      transition: border-color var(--transition);
    }

    .search-form input:focus {
      border-color: var(--primary);
      background: #fff;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 8px 18px;
      border-radius: 999px;
      background: var(--surface-alt);
      border: 1px solid var(--border);
      color: var(--text-soft);
      font-size: 0.85rem;
      font-weight: 600;
      transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
    }

    .tag:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    /* ===== Category matrix ===== */
    .category-matrix {
      background: var(--surface);
    }

    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .category-card {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .category-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      background: #fdfbfe;
    }

    .category-card.featured {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      border-color: transparent;
    }

    .category-card.featured:hover {
      box-shadow: 0 16px 36px rgba(225,29,72,0.2);
    }

    .category-card i {
      font-size: 2rem;
      color: var(--primary);
    }

    .category-card.featured i {
      color: #fff;
    }

    .category-card h3 {
      font-size: 1.3rem;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    .category-card p {
      color: var(--text-soft);
      flex: 1;
    }

    .category-card.featured p {
      color: rgba(255,255,255,0.9);
    }

    .card-link {
      font-weight: 700;
      color: #fff;
      align-self: flex-start;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .card-note {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* ===== Featured picks ===== */
    .featured-picks {
      background: var(--bg);
    }

    .featured-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .featured-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .featured-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-5px);
    }

    .featured-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .featured-info {
      padding: 24px;
    }

    .badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(225,29,72,0.08);
      color: var(--primary);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 12px;
    }

    .featured-info h3 {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      margin-bottom: 8px;
    }

    .featured-info p {
      color: var(--text-soft);
      margin-bottom: 16px;
      font-size: 0.95rem;
    }

    .featured-meta {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--text-muted);
      font-size: 0.85rem;
      font-weight: 600;
    }

    .featured-meta i {
      color: var(--primary);
    }

    /* ===== Latest posts ===== */
    .latest-posts {
      background: var(--surface);
    }

    .latest-layout {
      display: grid;
      grid-template-columns: 1.5fr 0.5fr;
      gap: 40px;
    }

    .latest-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .post-item {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .post-item:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }

    .post-meta {
      display: flex;
      gap: 16px;
      margin-bottom: 12px;
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .post-category {
      color: var(--primary);
    }

    .post-item h3 {
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      margin-bottom: 8px;
    }

    .post-item h3 a:hover {
      color: var(--primary);
    }

    .post-item p {
      color: var(--text-soft);
      font-size: 0.95rem;
    }

    .latest-side {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 28px;
      align-self: start;
    }

    .latest-side h3 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .small-tags .tag {
      font-size: 0.78rem;
      padding: 6px 14px;
    }

    .empty-state {
      padding: 32px;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    /* ===== Ranking ===== */
    .ranking {
      background: var(--bg);
    }

    .rank-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 800px;
    }

    .rank-list li {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 20px 28px;
      transition: box-shadow var(--transition);
    }

    .rank-list li:hover {
      box-shadow: var(--shadow-md);
    }

    .rank-num {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary);
      width: 48px;
      text-align: center;
    }

    .rank-info {
      flex: 1;
    }

    .rank-info h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .rank-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .rank-heat {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 999px;
      background: rgba(225,29,72,0.1);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
    }

    /* ===== Resources ===== */
    .resources {
      background: var(--surface);
    }

    .resource-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .resource-card {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .resource-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .resource-card i {
      font-size: 2.2rem;
      color: var(--primary);
      margin-bottom: 16px;
    }

    .resource-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      margin-bottom: 8px;
    }

    .resource-card p {
      color: var(--text-soft);
      margin-bottom: 16px;
    }

    .resource-link {
      font-weight: 700;
      color: var(--primary);
    }

    /* ===== News feed ===== */
    .news-feed {
      background: var(--bg);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .news-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      font-weight: 600;
    }

    .news-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      letter-spacing: -0.01em;
    }

    .news-card h3 a:hover {
      color: var(--primary);
    }

    .news-card p {
      color: var(--text-soft);
      font-size: 0.9rem;
    }

    /* ===== Save entry ===== */
    .save-entry {
      background: var(--surface);
    }

    .save-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 40px;
      align-items: center;
      background: linear-gradient(135deg, #1e1b29, #3b1d4f);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #fff;
    }

    .save-text h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }

    .save-text p {
      color: rgba(255,255,255,0.8);
      margin-bottom: 24px;
      max-width: 520px;
    }

    .save-visual {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: var(--radius-md);
      padding: 32px 40px;
      min-width: 160px;
    }

    .save-visual i {
      font-size: 2.5rem;
    }

    .save-visual span {
      font-weight: 700;
    }

    /* ===== Security ===== */
    .security {
      background: var(--bg);
    }

    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .security-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      text-align: center;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .security-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .security-item i {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .security-item h3 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .security-item p {
      font-size: 0.9rem;
      color: var(--text-soft);
    }

    /* ===== Quick FAQ ===== */
    .quick-faq {
      background: var(--surface);
    }

    .faq-list {
      max-width: 820px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-list details {
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      background: var(--surface-alt);
      overflow: hidden;
      transition: border-color var(--transition);
    }

    .faq-list details[open] {
      border-color: var(--primary-light);
    }

    .faq-list summary {
      padding: 20px 28px;
      font-weight: 700;
      cursor: pointer;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 1.05rem;
      transition: background var(--transition);
    }

    .faq-list summary:hover {
      background: rgba(225,29,72,0.04);
    }

    .faq-list summary::-webkit-details-marker {
      display: none;
    }

    .faq-list summary::after {
      content: '+';
      font-size: 1.6rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform var(--transition);
    }

    .faq-list details[open] summary::after {
      transform: rotate(45deg);
    }

    .faq-list details p {
      padding: 0 28px 24px;
      color: var(--text-soft);
      line-height: 1.7;
      font-size: 0.95rem;
    }

    /* ===== Insights ===== */
    .insights {
      background: var(--bg);
    }

    .insight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .insight-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .insight-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .insight-card i {
      font-size: 1.8rem;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .insight-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .insight-card p {
      font-size: 0.9rem;
      color: var(--text-soft);
    }

    /* ===== Help center ===== */
    .help-center {
      background: var(--surface);
    }

    .help-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .help-card {
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .help-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .help-card i {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .help-card h3 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .help-card p {
      font-size: 0.9rem;
      color: var(--text-soft);
    }

    /* ===== Results strip ===== */
    .results-strip {
      background: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
      padding: 48px 0;
    }

    .results-inner {
      display: flex;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }

    .result-stat {
      text-align: center;
      color: #fff;
      flex: 1 1 120px;
    }

    .result-value {
      display: block;
      font-size: 2.4rem;
      font-weight: 900;
      letter-spacing: -0.02em;
    }

    .result-name {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.85);
      font-weight: 600;
      margin-top: 6px;
    }

    /* ===== Specs ===== */
    .specs {
      background: var(--bg);
    }

    .spec-table {
      max-width: 760px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .spec-row {
      display: flex;
      padding: 20px 28px;
      border-bottom: 1px solid var(--border);
      transition: background var(--transition);
    }

    .spec-row:last-child {
      border-bottom: none;
    }

    .spec-row:hover {
      background: var(--surface-alt);
    }

    .spec-label {
      flex: 0 0 160px;
      font-weight: 700;
      color: var(--text-soft);
    }

    .spec-value {
      flex: 1;
      color: var(--text);
      font-weight: 500;
    }

    /* ===== Footer ===== */
    .footer {
      background: #1e1b29;
      color: rgba(255,255,255,0.8);
      padding: 48px 0 24px;
      margin-top: 72px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand .logo {
      font-size: 1.4rem;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand p {
      color: rgba(255,255,255,0.6);
      max-width: 320px;
    }

    .footer-links h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-links a {
      display: block;
      color: rgba(255,255,255,0.6);
      padding: 6px 0;
      transition: color var(--transition);
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: rgba(255,255,255,0.5);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .category-grid,
      .featured-grid,
      .resource-grid,
      .news-grid,
      .security-grid,
      .insight-grid,
      .help-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .latest-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        padding: 12px 12px 0;
      }

      .navbar {
        padding: 12px 18px;
        border-radius: var(--radius-md);
        flex-wrap: wrap;
      }

      .nav-toggle {
        display: grid;
      }

      .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        align-items: stretch;
        gap: 4px;
        padding-top: 12px;
      }

      .nav-menu.open {
        display: flex;
      }

      .nav-link {
        justify-content: center;
        padding: 12px;
      }

      .hero {
        padding: 48px 0 64px;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
      }

      main section {
        padding: 48px 0;
      }

      .section-head {
        margin-bottom: 32px;
      }

      .category-grid,
      .featured-grid,
      .resource-grid,
      .news-grid,
      .security-grid,
      .insight-grid,
      .help-grid {
        grid-template-columns: 1fr;
      }

      .metrics-grid {
        grid-template-columns: 1fr;
      }

      .search-box {
        padding: 32px 20px;
      }

      .save-grid {
        grid-template-columns: 1fr;
        padding: 32px 20px;
        text-align: center;
      }

      .save-visual {
        min-width: auto;
      }

      .spec-row {
        flex-direction: column;
        gap: 8px;
      }

      .spec-label {
        flex: none;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
    }

    @media (max-width: 520px) {
      .hero h1 {
        font-size: 1.8rem;
      }

      .hero-lead {
        font-size: 0.95rem;
      }

      .btn {
        width: 100%;
        justify-content: center;
      }

      .search-form {
        flex-direction: column;
      }

      .search-form input {
        flex: none;
        width: 100%;
      }

      .tag-cloud {
        gap: 6px;
      }

      .tag {
        padding: 6px 12px;
        font-size: 0.75rem;
      }
    }

/* roulang page: article */
:root {
        --primary: #e11d48;
        --primary-dark: #be123c;
        --primary-light: #fb7185;
        --accent: #a855f7;
        --accent-dark: #7e22ce;
        --bg: #faf7fb;
        --surface: #ffffff;
        --surface-alt: #f5f0f7;
        --text: #1e1b29;
        --text-soft: #4b4453;
        --text-muted: #7b7485;
        --border: #e6dfea;
        --border-strong: #d5ccdb;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
        --shadow-lg: 0 18px 48px rgba(0,0,0,0.09);
        --radius-sm: 10px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
        --container-width: 1180px;
        --header-height: 72px;
        --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

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

    body {
        font-family: var(--font-sans);
        line-height: 1.6;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

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

    a {
        color: inherit;
        text-decoration: none;
    }

    button,
    input,
    select,
    textarea {
        font: inherit;
        color: inherit;
        background: none;
        border: none;
        outline: none;
    }

    button {
        cursor: pointer;
    }

    a:focus-visible,
    button:focus-visible {
        outline: 3px solid rgba(225,29,72,0.4);
        outline-offset: 2px;
        border-radius: 6px;
    }

    .container {
        width: 100%;
        max-width: var(--container-width);
        margin-inline: auto;
        padding-inline: 24px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky;
        top: 12px;
        z-index: 100;
        padding: 16px 20px 0;
        max-width: 1180px;
        margin-inline: auto;
        pointer-events: auto;
    }

    .navbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        padding: 12px 26px;
        transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .navbar:hover {
        box-shadow: var(--shadow-lg);
    }

    .logo {
        font-size: 1.35rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--text);
        white-space: nowrap;
    }

    .logo em {
        font-style: normal;
        color: var(--primary);
    }

    .nav-menu {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 10px 18px;
        border-radius: 999px;
        font-weight: 600;
        font-size: 0.95rem;
        color: var(--text-soft);
        transition: background var(--transition), color var(--transition);
    }

    .nav-link:hover {
        background: var(--surface-alt);
        color: var(--text);
    }

    .nav-link.active {
        background: var(--primary);
        color: #fff;
    }

    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 20px;
        border-radius: 999px;
        background: var(--primary);
        color: #fff;
        font-weight: 700;
        font-size: 0.9rem;
        transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        box-shadow: 0 4px 14px rgba(225,29,72,0.2);
    }

    .nav-cta:hover {
        background: var(--primary-dark);
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(225,29,72,0.26);
    }

    .nav-cta:active {
        transform: translateY(0);
        box-shadow: 0 3px 10px rgba(225,29,72,0.18);
    }

    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: var(--surface);
        place-items: center;
        color: var(--text);
        font-size: 1.25rem;
        transition: background var(--transition), border-color var(--transition);
    }

    .nav-toggle:hover {
        background: var(--surface-alt);
        border-color: var(--border-strong);
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 14px 28px;
        border-radius: 999px;
        font-weight: 700;
        font-size: 1rem;
        white-space: nowrap;
        transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
        will-change: transform;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 6px 18px rgba(225,29,72,0.28);
    }

    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 10px 24px rgba(225,29,72,0.32);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(225,29,72,0.24);
    }

    .btn-ghost {
        background: rgba(255,255,255,0.1);
        color: #fff;
        border: 1px solid rgba(255,255,255,0.3);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .btn-ghost:hover {
        background: rgba(255,255,255,0.2);
        border-color: rgba(255,255,255,0.45);
        transform: translateY(-2px);
    }

    .btn-ghost:active {
        transform: translateY(0);
    }

    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 1.5px solid var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(225,29,72,0.22);
    }

    .btn-outline:active {
        transform: translateY(0);
    }

    .btn-lg {
        padding: 16px 34px;
        font-size: 1.05rem;
    }

    .btn-sm {
        padding: 10px 18px;
        font-size: 0.85rem;
    }

    /* ===== Badge ===== */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        padding: 7px 14px;
        border-radius: 999px;
        font-size: 0.82rem;
        font-weight: 700;
        letter-spacing: 0.01em;
        white-space: nowrap;
    }

    .badge-primary {
        background: rgba(225,29,72,0.1);
        color: var(--primary);
    }

    .badge-accent {
        background: rgba(168,85,247,0.12);
        color: var(--accent-dark);
    }

    .badge-surface {
        background: var(--surface-alt);
        color: var(--text-soft);
    }

    .badge-outline {
        background: transparent;
        border: 1px solid var(--border-strong);
        color: var(--text-soft);
    }

    /* ===== Card ===== */
    .card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    }

    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
        border-color: var(--border-strong);
    }

    .card-body {
        padding: 22px;
    }

    .card-title {
        font-size: 1.18rem;
        font-weight: 750;
        letter-spacing: -0.01em;
        color: var(--text);
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .card-text {
        font-size: 0.94rem;
        color: var(--text-soft);
        line-height: 1.65;
    }

    .card-cover {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }

    .card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 16px 22px;
        border-top: 1px solid var(--border);
    }

    /* ===== Section ===== */
    .section {
        padding: 60px 0;
    }

    .section-alt {
        background: var(--surface-alt);
    }

    .section-tight {
        padding: 36px 0;
    }

    .section-header {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 24px;
        margin-bottom: 32px;
        flex-wrap: wrap;
    }

    .section-heading {
        font-size: 1.85rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--text);
        line-height: 1.3;
        margin-bottom: 8px;
    }

    .section-subheading {
        font-size: 1rem;
        color: var(--text-muted);
        max-width: 620px;
        line-height: 1.7;
    }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        margin-top: -12px;
        padding: 80px 0 72px;
        border-radius: 0 0 var(--radius-xl) var(--radius-xl);
        background-size: cover;
        background-position: center;
        overflow: hidden;
    }

    .article-hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(20,12,32,0.75) 0%, rgba(30,14,44,0.72) 45%, rgba(20,10,28,0.85) 100%);
        pointer-events: none;
    }

    .article-hero-inner {
        position: relative;
        z-index: 2;
        max-width: 860px;
        color: #fff;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.86rem;
        color: rgba(255,255,255,0.75);
        margin-bottom: 22px;
        flex-wrap: wrap;
    }

    .breadcrumb a {
        color: rgba(255,255,255,0.85);
        font-weight: 600;
        transition: color var(--transition);
    }

    .breadcrumb a:hover {
        color: #fff;
    }

    .breadcrumb .sep {
        opacity: 0.5;
    }

    .breadcrumb .current {
        color: #fff;
        font-weight: 700;
    }

    .article-hero h1 {
        font-size: 2.5rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        line-height: 1.25;
        margin-bottom: 18px;
        color: #fff;
    }

    .article-hero-excerpt {
        font-size: 1.08rem;
        color: rgba(255,255,255,0.82);
        line-height: 1.7;
        max-width: 680px;
        margin-bottom: 20px;
    }

    .article-meta {
        display: flex;
        align-items: center;
        gap: 18px;
        flex-wrap: wrap;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.72);
    }

    .article-meta-item {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .article-meta-item i {
        font-size: 0.82rem;
        opacity: 0.8;
    }

    /* ===== Article Body ===== */
    .article-layout {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 300px;
        gap: 34px;
        align-items: start;
    }

    .article-main {
        min-width: 0;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        padding: 34px;
    }

    .article-body {
        font-size: 1.02rem;
        color: var(--text-soft);
        line-height: 1.85;
    }

    .article-body h2,
    .article-body h3,
    .article-body h4 {
        color: var(--text);
        font-weight: 750;
        letter-spacing: -0.01em;
        margin: 1.4em 0 0.5em;
        line-height: 1.4;
    }

    .article-body h2 {
        font-size: 1.55rem;
        margin-top: 1.8em;
    }

    .article-body h3 {
        font-size: 1.25rem;
    }

    .article-body p {
        margin-bottom: 1.1em;
    }

    .article-body a {
        color: var(--primary);
        font-weight: 600;
        text-decoration: underline;
        text-underline-offset: 3px;
    }

    .article-body a:hover {
        color: var(--primary-dark);
    }

    .article-body ul,
    .article-body ol {
        margin: 0.8em 0 1.2em 1.4em;
        padding-left: 0.5em;
    }

    .article-body ul li,
    .article-body ol li {
        margin-bottom: 0.5em;
    }

    .article-body img {
        border-radius: var(--radius-md);
        margin: 1.2em 0;
    }

    .article-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--surface-alt);
        padding: 18px 22px;
        border-radius: 12px;
        margin: 1.6em 0;
        color: var(--text);
        font-weight: 500;
    }

    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.4em 0;
        font-size: 0.95rem;
        border-radius: 12px;
        overflow: hidden;
        border: 1px solid var(--border);
    }

    .article-body th,
    .article-body td {
        padding: 12px 16px;
        text-align: left;
        border-bottom: 1px solid var(--border);
    }

    .article-body th {
        background: var(--surface-alt);
        font-weight: 700;
        color: var(--text);
    }

    .article-body tr:last-child td {
        border-bottom: none;
    }

    .no-article {
        text-align: center;
        padding: 64px 20px;
        background: var(--surface-alt);
        border-radius: var(--radius-md);
        border: 1px dashed var(--border-strong);
    }

    .no-article .no-icon {
        display: inline-flex;
        width: 72px;
        height: 72px;
        border-radius: 50%;
        background: #fff;
        border: 1px solid var(--border);
        align-items: center;
        justify-content: center;
        font-size: 1.8rem;
        color: var(--primary);
        margin-bottom: 20px;
    }

    .no-article h2 {
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--text);
        margin-bottom: 10px;
    }

    .no-article p {
        color: var(--text-muted);
        margin-bottom: 24px;
    }

    /* ===== Sidebar ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 20px;
        position: sticky;
        top: 105px;
    }

    .sidebar-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 22px;
        box-shadow: var(--shadow-sm);
    }

    .sidebar-card h3 {
        font-size: 1.05rem;
        font-weight: 750;
        color: var(--text);
        margin-bottom: 14px;
        display: flex;
        align-items: center;
        gap: 9px;
    }

    .sidebar-card h3 i {
        color: var(--primary);
        font-size: 1rem;
    }

    .sidebar-list {
        list-style: none;
    }

    .sidebar-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
        font-size: 0.9rem;
        color: var(--text-soft);
        line-height: 1.55;
    }

    .sidebar-list li:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    .sidebar-list li:first-child {
        padding-top: 0;
    }

    .sidebar-list i {
        color: var(--primary);
        margin-top: 3px;
        font-size: 0.78rem;
    }

    .sidebar-tag {
        display: inline-flex;
        padding: 6px 12px;
        border-radius: 999px;
        background: var(--surface-alt);
        color: var(--text-soft);
        font-size: 0.8rem;
        font-weight: 600;
        margin: 0 6px 8px 0;
        transition: background var(--transition), color var(--transition);
    }

    .sidebar-tag:hover {
        background: var(--primary);
        color: #fff;
    }

    /* ===== Quick Facts ===== */
    .facts-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .fact-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 22px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    }

    .fact-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
        border-color: var(--border-strong);
    }

    .fact-icon {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        background: rgba(225,29,72,0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 1.15rem;
    }

    .fact-value {
        font-size: 1.6rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--text);
        line-height: 1.2;
    }

    .fact-label {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.5;
    }

    /* ===== Safety Strip ===== */
    .safety-strip {
        background: linear-gradient(135deg, #1e1b29 0%, #2d2138 100%);
        border-radius: var(--radius-lg);
        padding: 28px 30px;
        display: flex;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
        color: #fff;
    }

    .safety-strip-icon {
        width: 52px;
        height: 52px;
        border-radius: 14px;
        background: rgba(255,255,255,0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color: #fb7185;
        flex-shrink: 0;
    }

    .safety-strip-content {
        flex: 1;
        min-width: 200px;
    }

    .safety-strip-content h3 {
        font-size: 1.15rem;
        font-weight: 750;
        margin-bottom: 4px;
    }

    .safety-strip-content p {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.75);
        line-height: 1.6;
    }

    /* ===== Related ===== */
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .related-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    }

    .related-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
        border-color: var(--border-strong);
    }

    .related-card-cover {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }

    .related-card-body {
        padding: 18px 20px 20px;
    }

    .related-card-title {
        font-size: 1.02rem;
        font-weight: 700;
        color: var(--text);
        line-height: 1.45;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .related-card-text {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 820px;
        margin-inline: auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 22px 26px;
        transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-item:hover {
        border-color: var(--border-strong);
        box-shadow: var(--shadow-sm);
    }

    .faq-item h3 {
        font-size: 1.08rem;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 8px;
        display: flex;
        align-items: flex-start;
        gap: 12px;
    }

    .faq-item h3 i {
        color: var(--primary);
        margin-top: 4px;
        font-size: 0.85rem;
    }

    .faq-item p {
        font-size: 0.94rem;
        color: var(--text-soft);
        line-height: 1.7;
        padding-left: 26px;
    }

    /* ===== CTA Banner ===== */
    .cta-banner {
        position: relative;
        background-size: cover;
        background-position: center;
        border-radius: var(--radius-xl);
        overflow: hidden;
        padding: 52px 48px;
    }

    .cta-banner::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(30,14,44,0.88), rgba(90,20,60,0.75));
        pointer-events: none;
    }

    .cta-banner-inner {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 34px;
        flex-wrap: wrap;
        justify-content: space-between;
        color: #fff;
    }

    .cta-banner h2 {
        font-size: 1.7rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        margin-bottom: 8px;
    }

    .cta-banner p {
        font-size: 1rem;
        color: rgba(255,255,255,0.8);
        max-width: 520px;
        line-height: 1.7;
    }

    .cta-banner-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .footer {
        background: #171321;
        color: rgba(255,255,255,0.75);
        padding: 52px 0 28px;
        margin-top: 40px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 36px;
        margin-bottom: 40px;
    }

    .footer-brand .logo {
        color: #fff;
        margin-bottom: 14px;
        display: inline-block;
    }

    .footer-brand .logo em {
        color: var(--primary-light);
    }

    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.7;
        max-width: 300px;
        color: rgba(255,255,255,0.6);
    }

    .footer-links h4 {
        color: #fff;
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 16px;
    }

    .footer-links a {
        display: block;
        font-size: 0.9rem;
        padding: 6px 0;
        color: rgba(255,255,255,0.65);
        transition: color var(--transition), padding-left var(--transition);
    }

    .footer-links a:hover {
        color: #fff;
        padding-left: 6px;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 24px;
        text-align: center;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.45);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .facts-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .article-layout {
            grid-template-columns: 1fr;
        }
        .article-sidebar {
            position: static;
            flex-direction: row;
            flex-wrap: wrap;
        }
        .sidebar-card {
            flex: 1 1 260px;
        }
    }

    @media (max-width: 768px) {
        .site-header {
            padding: 10px 14px 0;
            top: 8px;
        }
        .navbar {
            padding: 10px 16px;
            border-radius: var(--radius-md);
        }
        .nav-toggle {
            display: grid;
        }
        .nav-menu {
            display: none;
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            flex-direction: column;
            align-items: stretch;
            gap: 4px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 12px;
        }
        .nav-menu.open {
            display: flex;
        }
        .nav-link,
        .nav-cta {
            justify-content: center;
            width: 100%;
        }
        .nav-link.active {
            background: var(--primary);
        }
        .article-hero {
            padding: 60px 0 56px;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .article-hero h1 {
            font-size: 1.85rem;
        }
        .article-hero-excerpt {
            font-size: 0.98rem;
        }
        .article-main {
            padding: 22px 18px;
            border-radius: var(--radius-md);
        }
        .article-body {
            font-size: 0.96rem;
            line-height: 1.75;
        }
        .article-body h2 {
            font-size: 1.3rem;
        }
        .facts-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .fact-card {
            padding: 16px;
        }
        .fact-value {
            font-size: 1.3rem;
        }
        .related-grid {
            grid-template-columns: 1fr;
        }
        .cta-banner {
            padding: 36px 26px;
            border-radius: var(--radius-lg);
        }
        .cta-banner h2 {
            font-size: 1.35rem;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding-inline: 16px;
        }
        .navbar {
            padding: 10px 14px;
        }
        .logo {
            font-size: 1.15rem;
        }
        .article-hero h1 {
            font-size: 1.55rem;
        }
        .article-hero-excerpt {
            font-size: 0.92rem;
        }
        .article-meta {
            gap: 12px;
            font-size: 0.82rem;
        }
        .section {
            padding: 40px 0;
        }
        .section-header {
            margin-bottom: 24px;
        }
        .section-heading {
            font-size: 1.45rem;
        }
        .facts-grid {
            grid-template-columns: 1fr;
        }
        .safety-strip {
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .faq-item {
            padding: 18px;
        }
        .faq-item p {
            padding-left: 0;
        }
        .btn-lg {
            padding: 14px 24px;
            font-size: 0.95rem;
        }
    }

/* roulang page: category1 */
:root {
      --primary: #e11d48;
      --primary-dark: #be123c;
      --primary-light: #fb7185;
      --accent: #a855f7;
      --accent-dark: #7e22ce;
      --bg: #faf7fb;
      --surface: #ffffff;
      --surface-alt: #f5f0f7;
      --text: #1e1b29;
      --text-soft: #4b4453;
      --text-muted: #7b7485;
      --border: #e6dfea;
      --border-strong: #d5ccdb;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
      --shadow-lg: 0 18px 48px rgba(0,0,0,0.09);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      --container-width: 1180px;
      --header-height: 72px;
      --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-sans);
      line-height: 1.65;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    button,
    input,
    select,
    textarea {
      font: inherit;
      color: inherit;
      background: none;
      border: none;
      outline: none;
    }

    button {
      cursor: pointer;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-inline: auto;
      padding-inline: 24px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 16px;
      z-index: 100;
      padding: 16px 20px 0;
      max-width: 1180px;
      margin-inline: auto;
      pointer-events: auto;
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      padding: 12px 26px;
      transition: background var(--transition), box-shadow var(--transition);
    }

    .navbar:hover {
      box-shadow: var(--shadow-lg);
    }

    .logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .logo em {
      font-style: normal;
      color: var(--primary);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 10px 18px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-soft);
      transition: background var(--transition), color var(--transition);
    }

    .nav-link:hover {
      background: var(--surface-alt);
      color: var(--text);
    }

    .nav-link.active {
      background: var(--primary);
      color: #fff;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: 999px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      transition: background var(--transition), transform var(--transition);
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--border);
      background: var(--surface);
      place-items: center;
      color: var(--text);
      font-size: 1.25rem;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 1rem;
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
      will-change: transform;
      cursor: pointer;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.28);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(225, 29, 72, 0.32);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.24);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    .btn-ghost {
      background: rgba(255,255,255,0.12);
      color: #fff;
      border: 1px solid rgba(255,255,255,0.3);
      backdrop-filter: blur(8px);
    }

    .btn-ghost:hover {
      background: rgba(255,255,255,0.22);
      border-color: rgba(255,255,255,0.45);
      transform: translateY(-2px);
    }

    /* ===== Section Base ===== */
    section {
      padding: 64px 0;
    }

    .section-heading {
      max-width: 680px;
      margin-bottom: 40px;
    }

    .section-heading h2 {
      font-size: 2rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.25;
      margin-bottom: 12px;
      color: var(--text);
    }

    .section-heading p {
      font-size: 1.05rem;
      color: var(--text-soft);
      line-height: 1.7;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 10px;
    }

    .section-eyebrow::before {
      content: '';
      width: 24px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.03em;
    }

    .badge-primary {
      background: rgba(225, 29, 72, 0.1);
      color: var(--primary);
      border: 1px solid rgba(225, 29, 72, 0.2);
    }

    .badge-light {
      background: rgba(255,255,255,0.14);
      color: #fff;
      border: 1px solid rgba(255,255,255,0.25);
    }

    /* ===== Category Hero ===== */
    .cat-hero {
      position: relative;
      padding: 72px 0 88px;
      background-image: url('/assets/images/811e8cc38bd00f95.jpg');
      background-size: cover;
      background-position: center;
      border-radius: 0 0 var(--radius-xl) var(--radius-xl);
      overflow: hidden;
      margin-top: -16px;
    }

    .cat-hero::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(25,15,40,0.72) 0%, rgba(50,15,50,0.5) 50%, rgba(10,10,25,0.65) 100%);
      pointer-events: none;
    }

    .cat-hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .cat-hero-content {
      color: #fff;
    }

    .cat-hero-content h1 {
      font-size: 2.8rem;
      font-weight: 800;
      letter-spacing: -0.03em;
      line-height: 1.2;
      margin: 16px 0 18px;
      color: #fff;
    }

    .cat-hero-content h1 .highlight {
      background: linear-gradient(120deg, var(--primary-light), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .cat-hero-desc {
      font-size: 1.1rem;
      line-height: 1.75;
      color: rgba(255,255,255,0.85);
      max-width: 540px;
      margin-bottom: 28px;
    }

    .cat-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 32px;
    }

    .cat-subnav {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .cat-subnav span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      border-radius: 999px;
      background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.22);
      color: rgba(255,255,255,0.9);
      font-size: 0.85rem;
      font-weight: 600;
      backdrop-filter: blur(6px);
    }

    .cat-subnav span i {
      font-size: 0.75rem;
    }

    .cat-hero-panel {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.18);
      border-radius: var(--radius-lg);
      padding: 28px;
      backdrop-filter: blur(12px);
      color: #fff;
    }

    .cat-hero-panel h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #fff;
    }

    .cat-hero-panel ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .cat-hero-panel ul li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.92rem;
      color: rgba(255,255,255,0.85);
      line-height: 1.55;
    }

    .cat-hero-panel ul li i {
      color: var(--primary-light);
      margin-top: 3px;
      flex-shrink: 0;
    }

    /* ===== Metrics Board ===== */
    .metrics-section {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      padding: 40px 0;
    }

    .metrics-board {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-item {
      text-align: center;
      padding: 24px 20px;
      background: var(--surface-alt);
      border-radius: var(--radius-md);
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .metric-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .metric-value {
      font-size: 2.4rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--primary);
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-soft);
      margin-top: 8px;
    }

    .metric-icon {
      font-size: 1.5rem;
      color: var(--accent);
      margin-bottom: 10px;
    }

    /* ===== Standard Cards ===== */
    .standards-section {
      background: var(--bg);
    }

    .standards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .standard-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .standard-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-light);
    }

    .standard-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
    }

    .standard-icon.red {
      background: rgba(225,29,72,0.1);
      color: var(--primary);
    }

    .standard-icon.purple {
      background: rgba(168,85,247,0.1);
      color: var(--accent);
    }

    .standard-icon.orange {
      background: rgba(245,158,11,0.1);
      color: #d97706;
    }

    .standard-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text);
    }

    .standard-card p {
      font-size: 0.95rem;
      color: var(--text-soft);
      line-height: 1.7;
    }

    /* ===== Scene Grid ===== */
    .scene-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .scene-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .scene-card {
      display: flex;
      gap: 20px;
      background: var(--surface-alt);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .scene-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .scene-card img {
      width: 160px;
      height: 100%;
      object-fit: cover;
      flex-shrink: 0;
    }

    .scene-info {
      padding: 20px 20px 20px 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .scene-info h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text);
    }

    .scene-info p {
      font-size: 0.9rem;
      color: var(--text-soft);
      line-height: 1.6;
    }

    .scene-tag {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }

    /* ===== Process Steps ===== */
    .process-section {
      background: var(--bg);
    }

    .process-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      text-align: center;
      padding: 28px 20px;
      background: var(--surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      position: relative;
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .process-step:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .step-number {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
    }

    .process-step h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text);
    }

    .process-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ===== News List ===== */
    .news-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .news-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .news-card {
      display: block;
      padding: 20px 24px;
      background: var(--surface-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .news-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }

    .news-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .news-card p {
      font-size: 0.9rem;
      color: var(--text-soft);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .news-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .news-meta span {
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .news-meta span i {
      font-size: 0.7rem;
      color: var(--primary-light);
    }

    .empty-state {
      text-align: center;
      padding: 32px;
      color: var(--text-muted);
      font-size: 0.95rem;
      background: var(--surface-alt);
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-strong);
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg);
    }

    .faq-list {
      max-width: 780px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-item:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 24px;
      text-align: left;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text);
      cursor: pointer;
      transition: color var(--transition);
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-question i {
      font-size: 0.9rem;
      color: var(--primary);
      transition: transform var(--transition);
    }

    .faq-item.active .faq-question i {
      transform: rotate(180deg);
    }

    .faq-answer {
      padding: 0 24px 18px;
      font-size: 0.92rem;
      color: var(--text-soft);
      line-height: 1.7;
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* ===== CTA Panel ===== */
    .cta-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
    }

    .cta-panel {
      background: linear-gradient(135deg, #1e1b29 0%, #3b1d3a 55%, #2b1b38 100%);
      border-radius: var(--radius-xl);
      padding: 48px 40px;
      text-align: center;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .cta-panel::before {
      content: '';
      position: absolute;
      top: -60%;
      right: -20%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(225,29,72,0.35) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-panel h2 {
      font-size: 2rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 12px;
      position: relative;
      z-index: 1;
    }

    .cta-panel p {
      font-size: 1.05rem;
      color: rgba(255,255,255,0.8);
      max-width: 560px;
      margin: 0 auto 28px;
      line-height: 1.7;
      position: relative;
      z-index: 1;
    }

    .cta-panel .btn {
      position: relative;
      z-index: 1;
    }

    /* ===== Footer ===== */
    .footer {
      background: #1e1b29;
      color: rgba(255,255,255,0.75);
      padding: 48px 0 0;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 32px;
    }

    .footer-brand .logo {
      font-size: 1.3rem;
      color: #fff;
      margin-bottom: 12px;
      display: inline-block;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: rgba(255,255,255,0.6);
      max-width: 300px;
    }

    .footer-links h4 {
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.45);
      margin-bottom: 14px;
    }

    .footer-links a {
      display: block;
      font-size: 0.92rem;
      color: rgba(255,255,255,0.75);
      padding: 5px 0;
      transition: color var(--transition), padding-left var(--transition);
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 6px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 18px 24px;
      text-align: center;
      font-size: 0.82rem;
      color: rgba(255,255,255,0.5);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .cat-hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .cat-hero-content h1 {
        font-size: 2.2rem;
      }

      .metrics-board {
        grid-template-columns: repeat(2, 1fr);
      }

      .standards-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .process-flow {
        grid-template-columns: repeat(2, 1fr);
      }

      .scene-grid {
        grid-template-columns: 1fr;
      }

      .news-list {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 44px 0;
      }

      .section-heading h2 {
        font-size: 1.6rem;
      }

      .nav-toggle {
        display: grid;
      }

      .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        padding: 16px;
        gap: 6px;
      }

      .nav-menu.open {
        display: flex;
      }

      .nav-link {
        width: 100%;
        justify-content: center;
      }

      .nav-cta {
        width: 100%;
        justify-content: center;
        margin-top: 6px;
      }

      .cat-hero {
        padding: 48px 0 56px;
      }

      .cat-hero-content h1 {
        font-size: 1.9rem;
      }

      .cat-hero-desc {
        font-size: 1rem;
      }

      .cat-hero-actions {
        flex-direction: column;
      }

      .cat-hero-panel {
        padding: 20px;
      }

      .metrics-board {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }

      .metric-value {
        font-size: 1.8rem;
      }

      .standards-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .process-flow {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .scene-card {
        flex-direction: column;
      }

      .scene-card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
      }

      .scene-info {
        padding: 16px 20px;
      }

      .news-card {
        padding: 16px 20px;
      }

      .cta-panel {
        padding: 32px 20px;
      }

      .cta-panel h2 {
        font-size: 1.5rem;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-inline: 16px;
      }

      .site-header {
        padding: 10px 12px 0;
        top: 8px;
      }

      .navbar {
        padding: 10px 18px;
      }

      .cat-hero-content h1 {
        font-size: 1.6rem;
      }

      .metrics-board {
        grid-template-columns: 1fr;
      }

      .metric-item {
        padding: 18px 16px;
      }

      .standard-card {
        padding: 20px;
      }

      .faq-question {
        padding: 14px 16px;
        font-size: 0.92rem;
      }

      .faq-answer {
        padding: 0 16px 14px;
        font-size: 0.87rem;
      }

      .btn {
        padding: 12px 22px;
        font-size: 0.92rem;
      }
    }

    @media (min-width: 769px) {
      .nav-menu {
        display: flex !important;
      }
    }