/* roulang page: index */
:root {
      --bg-dark: #0B0E14;
      --bg-card: #141923;
      --bg-card-hover: #1A2230;
      --border-line: #202B3B;
      --border-focus: rgba(0, 242, 254, 0.4);
      --neon-cyan: #00F2FE;
      --aurora-green: #10B981;
      --neon-purple: #8B5CF6;
      --neon-pink: #EC4899;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --glow-cyan: 0 0 20px rgba(0, 242, 254, 0.25);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: var(--neon-cyan);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover, a:focus {
      color: #67e8f9;
      text-decoration: none;
    }

    .container-custom {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Top Promo Bar */
    .top-promo-bar {
      height: 38px;
      background: #181028;
      border-bottom: 1px solid rgba(139, 92, 246, 0.2);
      font-size: 13px;
      color: #cbd5e1;
      display: flex;
      align-items: center;
      position: relative;
      z-index: 100;
    }
    .top-promo-bar .promo-badge {
      background: rgba(139, 92, 246, 0.25);
      color: #c084fc;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
      margin-right: 10px;
      border: 1px solid rgba(139, 92, 246, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .node-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--aurora-green);
      font-size: 12px;
      font-weight: 500;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background-color: var(--aurora-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--aurora-green);
      animation: pulseGreen 1.8s infinite;
    }
    @keyframes pulseGreen {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    /* Main Header Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(11, 14, 20, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: 0.5px;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0B0E14;
      font-size: 18px;
      box-shadow: var(--glow-cyan);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      padding: 6px 2px;
      position: relative;
    }
    .nav-links a.active, .nav-links a:hover {
      color: #FFFFFF;
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--neon-cyan);
      box-shadow: 0 0 8px var(--neon-cyan);
      border-radius: 2px;
    }
    .header-tools {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-capsule {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-line);
      border-radius: 20px;
      padding: 6px 14px;
      width: 200px;
      transition: var(--transition);
    }
    .search-capsule:focus-within {
      border-color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.05);
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
    }
    .search-capsule input {
      background: transparent;
      border: none;
      box-shadow: none;
      color: #fff;
      font-size: 13px;
      margin: 0;
      padding: 0 0 0 8px;
      height: auto;
    }
    .search-capsule input:focus {
      background: transparent;
      border: none;
      box-shadow: none;
    }
    .search-capsule i {
      color: var(--text-dim);
      font-size: 13px;
    }
    .fav-badge-btn {
      position: relative;
      color: var(--text-muted);
      font-size: 17px;
      padding: 6px;
      transition: var(--transition);
    }
    .fav-badge-btn:hover {
      color: var(--neon-pink);
    }
    .fav-badge-btn .badge-num {
      position: absolute;
      top: 0;
      right: 0;
      width: 15px;
      height: 15px;
      background: var(--neon-pink);
      color: #fff;
      font-size: 9px;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--neon-cyan), #00b4d8);
      color: #06101e !important;
      font-weight: 700;
      font-size: 13px;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(0, 242, 254, 0.35);
      transition: var(--transition);
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.03);
      color: #e2e8f0 !important;
      border: 1px solid rgba(255, 255, 255, 0.15);
      font-weight: 600;
      font-size: 13px;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--neon-cyan);
      color: #fff !important;
    }

    /* Offcanvas toggle for mobile */
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-line);
      color: #fff;
      font-size: 18px;
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
    }

    /* Common Section Styles */
    section {
      padding: 70px 0;
      position: relative;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-title-wrap {
      margin-bottom: 45px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.08);
      border: 1px solid rgba(0, 242, 254, 0.2);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #F8FAFC;
      margin-bottom: 14px;
      line-height: 1.35;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 780px;
      line-height: 1.7;
      margin: 0;
    }

    /* Cards */
    .card-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      height: 100%;
    }
    .card-panel:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 242, 254, 0.35);
      box-shadow: 0 8px 24px -4px rgba(0, 242, 254, 0.15);
    }

    /* Section 1: Hero Cockpit */
    .hero-section {
      padding: 60px 0 80px 0;
      background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.12) 0%, transparent 60%),
                  radial-gradient(circle at 20% 80%, rgba(0, 242, 254, 0.08) 0%, transparent 60%),
                  var(--bg-dark);
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      color: #FFFFFF;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #00F2FE 0%, #4facfe 50%, #c084fc 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .hero-metrics-pill {
      display: inline-flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-line);
      padding: 10px 18px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
    }
    .hero-metric-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: #e2e8f0;
    }
    .hero-metric-item strong {
      color: var(--neon-cyan);
      font-weight: 700;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 26px;
    }
    .security-badge-row {
      display: flex;
      align-items: center;
      gap: 20px;
      font-size: 12px;
      color: var(--text-dim);
    }
    .security-badge-row span {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .security-badge-row i {
      color: var(--aurora-green);
    }

    /* Hero Right Terminal UI */
    .terminal-dashboard {
      background: #0f141d;
      border: 1px solid #202b3b;
      border-radius: var(--radius-lg);
      padding: 20px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 254, 0.08);
      position: relative;
    }
    .terminal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding-bottom: 14px;
      margin-bottom: 16px;
    }
    .window-dots {
      display: flex;
      gap: 6px;
    }
    .window-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }
    .window-dots span:nth-child(1) { background: #ef4444; }
    .window-dots span:nth-child(2) { background: #f59e0b; }
    .window-dots span:nth-child(3) { background: #10b981; }
    .terminal-title {
      font-family: monospace;
      font-size: 12px;
      color: var(--text-muted);
    }
    .bitrate-meter {
      background: rgba(0, 0, 0, 0.4);
      border-radius: var(--radius-sm);
      padding: 14px;
      margin-bottom: 14px;
      border: 1px solid rgba(255, 255, 255, 0.04);
    }
    .bitrate-bar-track {
      height: 6px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 3px;
      overflow: hidden;
      margin-top: 8px;
    }
    .bitrate-bar-fill {
      height: 100%;
      width: 86%;
      background: linear-gradient(90deg: var(--neon-cyan), var(--aurora-green));
      border-radius: 3px;
      animation: barPulse 2.4s infinite ease-in-out;
    }
    @keyframes barPulse {
      0%, 100% { width: 86%; }
      50% { width: 94%; }
    }
    .terminal-stat-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 14px;
    }
    .terminal-stat-box {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-sm);
      padding: 10px;
    }
    .terminal-stat-label {
      font-size: 11px;
      color: var(--text-dim);
      text-transform: uppercase;
      margin-bottom: 4px;
    }
    .terminal-stat-val {
      font-family: monospace;
      font-size: 16px;
      font-weight: 700;
      color: #F8FAFC;
    }
    .terminal-tunnel-status {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(16, 185, 129, 0.08);
      border: 1px solid rgba(16, 185, 129, 0.2);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      font-size: 12px;
      color: #6ee7b7;
    }

    /* Section 2: Features */
    .feature-icon-radar {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(0, 242, 254, 0.08);
      border: 1px solid rgba(0, 242, 254, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-cyan);
      font-size: 22px;
      margin-bottom: 18px;
    }
    .feature-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin: 0;
    }

    /* Section 3: Use Cases */
    .usecase-row {
      display: flex;
      align-items: center;
      gap: 40px;
      margin-bottom: 50px;
    }
    .usecase-row:last-child {
      margin-bottom: 0;
    }
    .usecase-row.reverse {
      flex-direction: row-reverse;
    }
    .usecase-media {
      flex: 1;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-line);
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
      position: relative;
    }
    .usecase-media img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }
    .usecase-media:hover img {
      transform: scale(1.03);
    }
    .usecase-content {
      flex: 1;
    }
    .usecase-kicker {
      font-size: 12px;
      font-weight: 700;
      color: var(--neon-cyan);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }
    .usecase-heading {
      font-size: 22px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      line-height: 1.4;
    }
    .usecase-text {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.75;
      margin-bottom: 16px;
    }
    .usecase-checklist {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .usecase-checklist li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: #cbd5e1;
      margin-bottom: 8px;
    }
    .usecase-checklist i {
      color: var(--aurora-green);
    }

    /* Section 4: Demo Console */
    .console-stage {
      background: #080b10;
      border: 1px solid #1e2838;
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 20px 50px rgba(0, 0, 0, 0.7);
    }
    .console-screen-mock {
      position: relative;
      height: 420px;
      border-radius: 8px;
      overflow: hidden;
      background: #030508;
      display: flex;
      align-items: flex-end;
      border: 1px solid rgba(255, 255, 255, 0.04);
    }
    .console-screen-mock img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.75;
    }
    .console-controls-overlay {
      position: relative;
      z-index: 2;
      width: 100%;
      background: linear-gradient(180deg, transparent 0%, rgba(3, 7, 13, 0.95) 60%);
      padding: 24px 20px 18px 20px;
    }
    .player-progressbar {
      height: 5px;
      background: rgba(255, 255, 255, 0.15);
      border-radius: 3px;
      position: relative;
      margin-bottom: 14px;
      cursor: pointer;
    }
    .player-progress-fill {
      width: 62%;
      height: 100%;
      background: var(--neon-cyan);
      box-shadow: 0 0 10px var(--neon-cyan);
      border-radius: 3px;
    }
    .player-progress-buffer {
      position: absolute;
      left: 62%;
      top: 0;
      width: 28%;
      height: 100%;
      background: rgba(255, 255, 255, 0.3);
      border-radius: 3px;
    }
    .player-btn-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .player-left-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .player-icon-btn {
      color: #fff;
      font-size: 16px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .player-time-badge {
      font-family: monospace;
      font-size: 13px;
      color: #cbd5e1;
    }
    .player-right-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .quality-pill {
      font-size: 11px;
      font-weight: 700;
      background: rgba(0, 242, 254, 0.2);
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* Section 5: Metrics */
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      position: relative;
    }
    .metric-value {
      font-family: monospace;
      font-size: 38px;
      font-weight: 900;
      color: #FFFFFF;
      margin-bottom: 6px;
      letter-spacing: -1px;
    }
    .metric-value span {
      color: var(--neon-cyan);
      font-size: 24px;
    }
    .metric-title {
      font-size: 14px;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 4px;
    }
    .metric-caption {
      font-size: 12px;
      color: var(--text-dim);
      margin: 0;
    }

    /* Section 6: Category Matrix */
    .cat-entry-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
      display: block;
    }
    .cat-entry-card:hover {
      transform: translateY(-5px);
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
    }
    .cat-entry-thumb {
      height: 160px;
      position: relative;
      overflow: hidden;
    }
    .cat-entry-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .cat-entry-card:hover .cat-entry-thumb img {
      transform: scale(1.06);
    }
    .cat-entry-badge {
      position: absolute;
      top: 10px;
      right: 10px;
      background: rgba(11, 14, 20, 0.85);
      backdrop-filter: blur(4px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #fff;
      font-size: 11px;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .cat-entry-playicon {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 44px;
      height: 44px;
      background: rgba(0, 242, 254, 0.85);
      color: #06101e;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      opacity: 0;
      transition: var(--transition);
    }
    .cat-entry-card:hover .cat-entry-playicon {
      opacity: 1;
      transform: translate(-50%, -50%) scale(1.1);
    }
    .cat-entry-body {
      padding: 16px;
    }
    .cat-entry-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }
    .cat-entry-meta {
      font-size: 12px;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
    }

    /* Section 7: Pricing Matrix */
    .pricing-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .pricing-card.featured {
      background: linear-gradient(180deg, rgba(20, 25, 35, 1) 0%, rgba(16, 26, 46, 1) 100%);
      border-color: var(--neon-cyan);
      box-shadow: 0 0 30px rgba(0, 242, 254, 0.15);
      transform: scale(1.02);
    }
    .pricing-ribbon {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(90deg, var(--neon-cyan), #3b82f6);
      color: #06101e;
      font-size: 11px;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 20px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .pricing-tier-name {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }
    .pricing-tier-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
      min-height: 40px;
    }
    .pricing-cost {
      font-size: 34px;
      font-weight: 900;
      color: #fff;
      margin-bottom: 24px;
    }
    .pricing-cost span {
      font-size: 14px;
      font-weight: 400;
      color: var(--text-dim);
    }
    .pricing-features-list {
      list-style: none;
      padding: 0;
      margin: 0 0 28px 0;
      flex: 1;
    }
    .pricing-features-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: #cbd5e1;
      margin-bottom: 12px;
    }
    .pricing-features-list i {
      color: var(--aurora-green);
      font-size: 13px;
    }

    /* Section 8: Review Wall */
    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 20px;
      height: 100%;
    }
    .review-user-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .review-avatar-ph {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #242f44;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-cyan);
      font-size: 14px;
      font-weight: 700;
    }
    .review-user-name {
      font-size: 13px;
      font-weight: 700;
      color: #fff;
    }
    .review-user-region {
      font-size: 11px;
      color: var(--text-dim);
    }
    .review-stars {
      color: #f59e0b;
      font-size: 11px;
      letter-spacing: 2px;
    }
    .review-body {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* Section 9: Trust & Endorsement */
    .trust-slider-card {
      background: #111622;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 30px;
    }
    .trust-badges-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .trust-badge-item {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-sm);
      padding: 14px;
      text-align: center;
    }
    .trust-badge-item i {
      font-size: 24px;
      color: var(--neon-cyan);
      margin-bottom: 8px;
      display: block;
    }
    .trust-badge-title {
      font-size: 13px;
      font-weight: 700;
      color: #fff;
    }
    .trust-badge-sub {
      font-size: 11px;
      color: var(--text-dim);
      margin-top: 2px;
    }

    /* Section 10: Tech Articles */
    .article-lead-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .article-lead-img {
      height: 220px;
      position: relative;
    }
    .article-lead-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .article-lead-content {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-strip-item {
      display: flex;
      gap: 16px;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 14px;
      margin-bottom: 14px;
      transition: var(--transition);
    }
    .article-strip-item:hover {
      border-color: rgba(0, 242, 254, 0.3);
      background: var(--bg-card-hover);
    }
    .article-strip-img {
      width: 100px;
      height: 70px;
      border-radius: 6px;
      overflow: hidden;
      flex-shrink: 0;
    }
    .article-strip-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .article-strip-title {
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
      line-height: 1.4;
    }
    .article-strip-date {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* Section 11: FAQ */
    .faq-item-custom {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-toggle {
      width: 100%;
      text-align: left;
      padding: 18px 20px;
      background: transparent;
      border: none;
      color: #F8FAFC;
      font-size: 15px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      transition: var(--transition);
    }
    .faq-toggle:hover {
      color: var(--neon-cyan);
    }
    .faq-body {
      padding: 0 20px 18px 20px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    /* Section 12: Final CTA */
    .final-cta-container {
      background: radial-gradient(circle at 50% 0%, rgba(0, 242, 254, 0.2) 0%, rgba(139, 92, 246, 0.1) 40%, rgba(11, 14, 20, 0.95) 100%), #121824;
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: var(--radius-lg);
      padding: 60px 30px;
      text-align: center;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    }
    .final-cta-h2 {
      font-size: 32px;
      font-weight: 900;
      color: #fff;
      margin-bottom: 14px;
    }
    .final-cta-lead {
      color: #cbd5e1;
      font-size: 15px;
      max-width: 680px;
      margin: 0 auto 30px auto;
      line-height: 1.7;
    }
    .final-cta-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
    }

    /* Footer */
    .site-footer {
      background: #07090E;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 24px 0;
      font-size: 13px;
      color: var(--text-dim);
    }
    .footer-col-title {
      font-size: 14px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .footer-links-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      color: var(--text-muted);
      font-size: 13px;
    }
    .footer-links-list a:hover {
      color: var(--neon-cyan);
    }
    .footer-bottom-line {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 40px;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
    }

    /* Offcanvas */
    .off-canvas {
      background: #0e131d;
      border-left: 1px solid #202b3b;
      padding: 24px;
    }
    .off-canvas a {
      color: #cbd5e1;
      display: block;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    /* Mobile Adaptations */
    @media (max-width: 1023px) {
      .nav-links, .header-tools .search-capsule {
        display: none;
      }
      .mobile-menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }
      .trust-badges-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .usecase-row, .usecase-row.reverse {
        flex-direction: column;
        gap: 20px;
      }
    }
    @media (max-width: 639px) {
      .hero-h1 {
        font-size: 27px;
      }
      .section-title {
        font-size: 22px;
      }
      .final-cta-actions {
        flex-direction: column;
        width: 100%;
      }
      .final-cta-actions a {
        width: 100%;
      }
      .terminal-stat-grid {
        grid-template-columns: 1fr;
      }
      .trust-badges-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-line {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }

/* roulang page: category1 */
:root {
      --bg-dark: #0B0E14;
      --bg-card: #141923;
      --bg-card-hover: #1A2230;
      --border-line: #202B3B;
      --border-focus: rgba(0, 242, 254, 0.4);
      --neon-cyan: #00F2FE;
      --aurora-green: #10B981;
      --neon-purple: #8B5CF6;
      --neon-pink: #EC4899;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --glow-cyan: 0 0 20px rgba(0, 242, 254, 0.25);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      color: var(--neon-cyan);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover, a:focus {
      color: #67e8f9;
      text-decoration: none;
    }
    .container-custom {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Top Promo Bar */
    .top-promo-bar {
      background: #181028;
      height: 36px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(139, 92, 246, 0.2);
      font-size: 12px;
      color: #cbd5e1;
    }
    .top-promo-bar .container-custom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .top-promo-bar .promo-badge {
      background: rgba(139, 92, 246, 0.25);
      color: #c084fc;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
      margin-right: 10px;
      border: 1px solid rgba(139, 92, 246, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .node-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--aurora-green);
      font-size: 12px;
      font-weight: 500;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background-color: var(--aurora-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--aurora-green);
      display: inline-block;
    }

    /* Main Header Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(11, 14, 20, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: 0.5px;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0B0E14;
      font-size: 18px;
      box-shadow: var(--glow-cyan);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      padding: 6px 2px;
      position: relative;
    }
    .nav-links a.active, .nav-links a:hover {
      color: #FFFFFF;
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--neon-cyan);
      box-shadow: 0 0 8px var(--neon-cyan);
      border-radius: 2px;
    }
    .header-tools {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-capsule {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-line);
      border-radius: 20px;
      padding: 6px 14px;
      width: 200px;
      transition: var(--transition);
    }
    .search-capsule:focus-within {
      border-color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.05);
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
    }
    .search-capsule input {
      background: transparent;
      border: none;
      box-shadow: none;
      color: #fff;
      font-size: 13px;
      margin: 0;
      padding: 0 0 0 8px;
      height: auto;
    }
    .search-capsule input:focus {
      background: transparent;
      border: none;
      box-shadow: none;
    }
    .search-capsule i {
      color: var(--text-dim);
      font-size: 13px;
    }
    .fav-badge-btn {
      position: relative;
      color: var(--text-muted);
      font-size: 17px;
      padding: 6px;
      transition: var(--transition);
    }
    .fav-badge-btn:hover {
      color: var(--neon-pink);
    }
    .fav-badge-btn .badge-num {
      position: absolute;
      top: 0;
      right: 0;
      width: 15px;
      height: 15px;
      background: var(--neon-pink);
      color: #fff;
      font-size: 9px;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--neon-cyan), #00b4d8);
      color: #06101e !important;
      font-weight: 700;
      font-size: 13px;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(0, 242, 254, 0.35);
      transition: var(--transition);
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.03);
      color: #e2e8f0 !important;
      border: 1px solid rgba(255, 255, 255, 0.15);
      font-weight: 600;
      font-size: 13px;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--neon-cyan);
      color: #fff !important;
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-line);
      color: #fff;
      font-size: 18px;
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
    }

    /* Off-canvas */
    .off-canvas {
      background: #0d121c;
      padding: 24px 20px;
      border-left: 1px solid var(--border-line);
    }
    .off-canvas-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .mobile-nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .mobile-nav-list li {
      margin-bottom: 12px;
    }
    .mobile-nav-list a {
      display: block;
      padding: 10px 14px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
    }
    .mobile-nav-list a.active, .mobile-nav-list a:hover {
      background: rgba(0, 242, 254, 0.1);
      color: var(--neon-cyan);
      border-left: 3px solid var(--neon-cyan);
    }

    /* Common Section Styles */
    section {
      padding: 55px 0;
      position: relative;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.08);
      border: 1px solid rgba(0, 242, 254, 0.25);
      padding: 3px 10px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-h2 {
      font-size: 26px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 10px;
      letter-spacing: -0.3px;
    }
    .section-p {
      color: var(--text-muted);
      font-size: 14px;
      max-width: 680px;
      margin-bottom: 24px;
    }

    /* 1. Category Header & Filter */
    .category-header-wrap {
      background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.12), transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(0, 242, 254, 0.08), transparent 40%),
                  #0E131C;
      padding: 40px 0 30px;
      border-bottom: 1px solid var(--border-line);
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-dim);
      margin-bottom: 16px;
    }
    .breadcrumb-nav a {
      color: var(--text-muted);
    }
    .breadcrumb-nav a:hover {
      color: var(--neon-cyan);
    }
    .breadcrumb-nav i {
      font-size: 10px;
    }
    .cat-title-row {
      display: flex;
      flex-wrap: wrap;
      align-items: flex-end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 24px;
    }
    .cat-main-h1 {
      font-size: 30px;
      font-weight: 800;
      color: #FFFFFF;
      margin: 0 0 8px 0;
      letter-spacing: -0.5px;
    }
    .cat-subtitle {
      color: var(--text-muted);
      font-size: 14px;
      margin: 0;
    }
    .cat-stat-pill {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: rgba(20, 25, 35, 0.9);
      border: 1px solid var(--border-line);
      padding: 8px 16px;
      border-radius: var(--radius-md);
    }
    .cat-stat-item {
      display: flex;
      flex-direction: column;
    }
    .cat-stat-num {
      font-size: 18px;
      font-weight: 700;
      color: var(--neon-cyan);
      font-family: monospace;
      line-height: 1.2;
    }
    .cat-stat-label {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* Filter Matrix */
    .filter-matrix-box {
      background: rgba(20, 25, 35, 0.6);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 16px 20px;
    }
    .filter-row {
      display: flex;
      align-items: center;
      padding: 8px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
      font-size: 13px;
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-title {
      width: 80px;
      flex-shrink: 0;
      color: var(--text-dim);
      font-weight: 600;
    }
    .filter-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-opt {
      padding: 3px 10px;
      border-radius: 4px;
      color: var(--text-muted);
      cursor: pointer;
      transition: var(--transition);
      font-size: 12px;
    }
    .filter-opt:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.06);
    }
    .filter-opt.active {
      background: rgba(0, 242, 254, 0.15);
      color: var(--neon-cyan);
      font-weight: 600;
      border: 1px solid rgba(0, 242, 254, 0.3);
    }

    /* 2. Main Resource Grid */
    .resource-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: calc(100% - 24px);
    }
    .resource-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 10px 24px -6px rgba(0, 242, 254, 0.2);
    }
    .res-thumb-wrap {
      position: relative;
      width: 100%;
      height: 175px;
      overflow: hidden;
      background: #090c12;
    }
    .res-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .resource-card:hover .res-thumb-wrap img {
      transform: scale(1.05);
    }
    .res-badge-res {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(11, 14, 20, 0.85);
      backdrop-filter: blur(4px);
      border: 1px solid rgba(0, 242, 254, 0.3);
      color: var(--neon-cyan);
      font-size: 11px;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .res-badge-codec {
      position: absolute;
      top: 10px;
      right: 10px;
      background: rgba(139, 92, 246, 0.85);
      color: #fff;
      font-size: 10px;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .res-duration {
      position: absolute;
      bottom: 8px;
      right: 8px;
      background: rgba(0, 0, 0, 0.8);
      color: #e2e8f0;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
      font-family: monospace;
    }
    .res-body {
      padding: 16px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .res-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      line-height: 1.4;
      margin-bottom: 8px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .res-title a {
      color: #FFFFFF;
    }
    .res-title a:hover {
      color: var(--neon-cyan);
    }
    .res-meta-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: var(--text-dim);
      font-size: 12px;
      margin-top: auto;
      padding-top: 10px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .res-node-flag {
      display: flex;
      align-items: center;
      gap: 4px;
      color: var(--aurora-green);
    }

    /* 3. Pagination Area */
    .pagination-bar-wrap {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 16px;
      padding-top: 24px;
      border-top: 1px solid var(--border-line);
    }
    .pager-list {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .pager-item a, .pager-item span {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: 6px;
      color: var(--text-muted);
      font-size: 13px;
      font-weight: 600;
      transition: var(--transition);
    }
    .pager-item a:hover {
      border-color: var(--neon-cyan);
      color: #fff;
    }
    .pager-item.active span {
      background: linear-gradient(135deg, var(--neon-cyan), #0099ff);
      color: #0B0E14;
      border-color: transparent;
      font-weight: 800;
    }

    /* 4. Trending Shelf in Category */
    .shelf-scroll-outer {
      overflow-x: auto;
      padding-bottom: 12px;
      scrollbar-width: thin;
      scrollbar-color: var(--border-line) transparent;
    }
    .shelf-scroll-outer::-webkit-scrollbar {
      height: 6px;
    }
    .shelf-scroll-outer::-webkit-scrollbar-thumb {
      background: var(--border-line);
      border-radius: 3px;
    }
    .shelf-row {
      display: flex;
      gap: 16px;
      min-width: 860px;
    }
    .shelf-card {
      flex: 1;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 12px;
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .shelf-card:hover {
      border-color: rgba(139, 92, 246, 0.4);
      transform: translateY(-3px);
      box-shadow: 0 8px 20px -4px rgba(139, 92, 246, 0.25);
    }
    .shelf-rank-tag {
      position: absolute;
      top: 18px;
      left: 18px;
      background: linear-gradient(135deg, #EC4899, #8B5CF6);
      color: #fff;
      font-size: 11px;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
      z-index: 2;
    }
    .shelf-thumb {
      height: 120px;
      border-radius: 6px;
      overflow: hidden;
      margin-bottom: 10px;
    }
    .shelf-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .shelf-title {
      font-size: 13px;
      font-weight: 700;
      color: #FFFFFF;
      line-height: 1.4;
      margin-bottom: 6px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .shelf-stats {
      font-size: 11px;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
    }

    /* 5. Category Spec Board */
    .spec-board-wrap {
      background: linear-gradient(180deg, #121824 0%, #0c1119 100%);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 32px;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      margin: 0;
      background: transparent;
      border: none;
    }
    .spec-table tr {
      background: transparent !important;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .spec-table td {
      padding: 12px 14px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .spec-table td:first-child {
      color: #FFFFFF;
      font-weight: 600;
      width: 32%;
      border-right: 1px solid rgba(255, 255, 255, 0.04);
    }
    .spec-status-switch {
      background: rgba(16, 185, 129, 0.12);
      border: 1px solid rgba(16, 185, 129, 0.3);
      color: var(--aurora-green);
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .radar-box {
      background: #090D14;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .radar-metric-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
      font-size: 13px;
    }
    .radar-progress {
      height: 6px;
      background: rgba(255, 255, 255, 0.06);
      border-radius: 3px;
      overflow: hidden;
      margin-top: 6px;
    }
    .radar-progress-bar {
      height: 100%;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
    }

    /* 6. Category FAQ */
    .cat-faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 22px;
      height: 100%;
      transition: var(--transition);
    }
    .cat-faq-card:hover {
      border-color: rgba(0, 242, 254, 0.3);
    }
    .cat-faq-q {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }
    .cat-faq-q i {
      color: var(--neon-cyan);
      margin-top: 3px;
      font-size: 14px;
    }
    .cat-faq-a {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.7;
      margin: 0;
    }

    /* 7. Category Tail CTA */
    .cat-tail-cta {
      background: radial-gradient(circle at 50% 50%, rgba(0, 242, 254, 0.12), transparent 70%),
                  linear-gradient(90deg, #111827 0%, #151c2a 100%);
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 10px 30px -10px rgba(0, 242, 254, 0.2);
    }
    .cat-tail-left {
      max-width: 680px;
    }
    .cat-tail-title {
      font-size: 22px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 8px;
    }
    .cat-tail-desc {
      color: var(--text-muted);
      font-size: 13px;
      margin: 0;
    }

    /* Footer */
    .site-footer {
      background: #080a0f;
      border-top: 1px solid var(--border-line);
      padding: 60px 0 30px;
      font-size: 13px;
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .footer-desc {
      color: var(--text-dim);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col-title {
      font-size: 14px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .footer-link-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-link-list li {
      margin-bottom: 10px;
    }
    .footer-link-list a {
      color: var(--text-muted);
    }
    .footer-link-list a:hover {
      color: var(--neon-cyan);
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      text-align: center;
      color: var(--text-dim);
      font-size: 12px;
    }

    /* Responsive */
    @media screen and (max-width: 1023px) {
      .nav-links { display: none; }
      .search-capsule { display: none; }
      .mobile-menu-btn { display: inline-flex; }
      .cat-main-h1 { font-size: 24px; }
      .cat-tail-cta { flex-direction: column; align-items: flex-start; gap: 20px; }
      .spec-board-wrap { padding: 20px; }
    }
    @media screen and (max-width: 639px) {
      .top-promo-bar { display: none; }
      .header-inner { height: 60px; }
      .cat-title-row { flex-direction: column; align-items: flex-start; }
      .filter-row { flex-direction: column; align-items: flex-start; gap: 8px; }
      .filter-title { width: 100%; }
      .pagination-bar-wrap { flex-direction: column; align-items: center; }
    }