/* roulang page: index */
:root {
      --primary-color: #1860E8;
      --primary-hover: #1450C2;
      --accent-green: #00B578;
      --accent-orange: #FA8C16;
      --bg-light: #F4F7FB;
      --bg-white: #FFFFFF;
      --text-dark: #1E293B;
      --text-muted: #475569;
      --text-sub: #94A3B8;
      --border-color: #E2E8F0;
      --radius-base: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --shadow-card: 0 4px 20px -2px rgba(24, 96, 232, 0.06), 0 2px 6px -1px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 14px 28px -4px rgba(24, 96, 232, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.05);
      --transition-smooth: all 0.25s ease;
    }

    /* Base Reset & Layout */
    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-white);
      color: var(--text-dark);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    /* Layout Sections */
    .section-padding {
      padding: 85px 0;
    }
    .section-bg-alt {
      background-color: var(--bg-light);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      background-color: rgba(24, 96, 232, 0.08);
      border-radius: 50px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.7;
    }
    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      height: 72px;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 19px;
      font-weight: 700;
      color: var(--primary-color);
      letter-spacing: -0.2px;
    }
    .pulse-indicator {
      width: 10px;
      height: 10px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(0, 181, 120, 0.7);
      animation: pulseGreen 2s infinite cubic-bezier(0.66, 0, 0, 1);
    }
    @keyframes pulseGreen {
      to { box-shadow: 0 0 0 10px rgba(0, 181, 120, 0); }
    }
    .main-nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 28px;
    }
    .main-nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
    }
    .main-nav-links a:hover,
    .main-nav-links a.active {
      color: var(--primary-color);
    }
    .main-nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -18px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary-color);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-capsule {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: #F0FDF4;
      border: 1px solid #DCFCE7;
      border-radius: 50px;
      font-size: 12px;
      color: #166534;
      font-weight: 500;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-base);
      background-color: var(--primary-color);
      color: #ffffff !important;
      font-weight: 600;
      font-size: 14px;
      border: 1px solid transparent;
      box-shadow: 0 4px 12px rgba(24, 96, 232, 0.2);
      transition: var(--transition-smooth);
      cursor: pointer;
    }
    .btn-main:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(24, 96, 232, 0.3);
      transform: translateY(-2px);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      border-radius: var(--radius-base);
      background-color: transparent;
      color: var(--text-dark);
      font-weight: 600;
      font-size: 14px;
      border: 1px solid var(--border-color);
      transition: var(--transition-smooth);
      cursor: pointer;
    }
    .btn-outline:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background: #F8FAFC;
    }

    /* Cards & Components */
    .dashboard-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 24px;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      position: relative;
      height: 100%;
    }
    .dashboard-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    /* Hero Section Specifics */
    .hero-section {
      padding: 70px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(24, 96, 232, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.28;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 30px;
    }
    .tier-cards-wrap {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-bottom: 36px;
    }
    .tier-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 18px 16px;
      position: relative;
      transition: var(--transition-smooth);
    }
    .tier-card.featured {
      border: 2px solid var(--primary-color);
      background: #FAFCFF;
      box-shadow: 0 8px 24px -4px rgba(24, 96, 232, 0.16);
    }
    .tier-tag {
      position: absolute;
      top: -10px;
      right: 14px;
      background: var(--primary-color);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
    }
    .tier-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .tier-spec {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Monitor Console (Hero Right) */
    .monitor-box {
      background: #0F172A;
      border-radius: var(--radius-lg);
      padding: 20px;
      color: #F8FAFC;
      box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.3);
      border: 1px solid #334155;
    }
    .monitor-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid #1E293B;
      padding-bottom: 14px;
      margin-bottom: 16px;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #EF4444; }
    .dot-yellow { background: #F59E0B; }
    .dot-green { background: #10B981; }
    .monitor-status-text {
      font-family: monospace;
      font-size: 12px;
      color: #38BDF8;
    }
    .monitor-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 16px;
    }
    .monitor-metric-item {
      background: #1E293B;
      border-radius: 6px;
      padding: 10px 12px;
    }
    .metric-item-label {
      font-size: 11px;
      color: #94A3B8;
      display: block;
    }
    .metric-item-val {
      font-size: 18px;
      font-weight: 700;
      color: #38BDF8;
      font-family: monospace;
    }
    .waveform-slot {
      height: 48px;
      background: #1E293B;
      border-radius: 6px;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: flex-end;
      padding: 0 4px;
      gap: 3px;
    }
    .wave-bar {
      flex: 1;
      background: linear-gradient(to top, #1860E8, #38BDF8);
      border-radius: 2px 2px 0 0;
      animation: wavePulse 1.8s infinite ease-in-out alternate;
    }
    @keyframes wavePulse {
      0% { height: 20%; }
      50% { height: 80%; }
      100% { height: 40%; }
    }

    /* Metric Board Section 2 */
    .stat-number {
      font-size: 34px;
      font-weight: 800;
      color: var(--primary-color);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      margin-bottom: 4px;
      line-height: 1.1;
    }
    .stat-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .stat-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Matrix Cards Section 3 */
    .icon-box {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(24, 96, 232, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-color);
      margin-bottom: 16px;
      font-size: 20px;
    }

    /* Network Detection Section 4 */
    .network-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      overflow: hidden;
      background: var(--bg-white);
      box-shadow: var(--shadow-sm);
    }
    .network-table th {
      background: #F8FAFC;
      padding: 14px 18px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      text-align: left;
      border-bottom: 1px solid var(--border-color);
    }
    .network-table td {
      padding: 14px 18px;
      font-size: 14px;
      color: var(--text-dark);
      border-bottom: 1px solid var(--border-color);
    }
    .network-table tr:last-child td {
      border-bottom: none;
    }
    .badge-status {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 3px 10px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 500;
    }
    .badge-status.optimal {
      background: #F0FDF4;
      color: #166534;
      border: 1px solid #BBF7D0;
    }

    /* Comparison Section 5 */
    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .compare-card {
      border-radius: var(--radius-base);
      padding: 28px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
    }
    .compare-card.highlight {
      border: 2px solid var(--primary-color);
      background: #FDFEFF;
    }
    .compare-header {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .compare-item {
      padding: 12px 0;
      border-bottom: 1px solid #F1F5F9;
      display: flex;
      justify-content: space-between;
      font-size: 14px;
    }
    .compare-item:last-child {
      border-bottom: none;
    }
    .compare-label {
      color: var(--text-muted);
    }
    .compare-val {
      font-weight: 600;
    }

    /* Timeline Section 6 */
    .timeline-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-node {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .timeline-node-step {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-color);
      background: #EFF6FF;
      padding: 2px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .timeline-node h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    /* Channel Matrix Section 7 */
    .channel-tab-panel {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
    }

    /* Articles / Insights Section 8 */
    .article-lead-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 30px;
      height: 100%;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-lead-tag {
      font-size: 12px;
      color: var(--primary-color);
      font-weight: 700;
      margin-bottom: 10px;
    }
    .article-lead-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 14px;
      line-height: 1.4;
    }
    .article-row-item {
      padding: 16px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      margin-bottom: 14px;
      transition: var(--transition-smooth);
    }
    .article-row-item:hover {
      border-color: var(--primary-color);
      transform: translateX(4px);
    }
    .article-row-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .article-row-meta {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* Node Gauge Section 9 */
    .gauge-progress-bar {
      width: 100%;
      height: 8px;
      background: #E2E8F0;
      border-radius: 4px;
      overflow: hidden;
      margin: 10px 0 6px;
    }
    .gauge-progress-fill {
      height: 100%;
      background: linear-gradient(90deg, #1860E8, #00B578);
      border-radius: 4px;
    }

    /* Protection Wall Section 10 */
    .shield-card {
      text-align: center;
      padding: 30px 20px;
    }
    .shield-badge {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: #EFF6FF;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin: 0 auto 16px;
      font-weight: 800;
    }

    /* Self-check Section 11 */
    .step-flow {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .step-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 13px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 10px;
      text-transform: uppercase;
    }

    /* Accordion FAQ Section 12 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-panel {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-toggle {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-toggle:hover {
      background-color: #F8FAFC;
    }
    .faq-content {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Live Event Logs Section 13 */
    .log-terminal {
      background: #0B1120;
      border-radius: var(--radius-base);
      padding: 20px;
      font-family: Consolas, Monaco, "Courier New", Courier, monospace;
      font-size: 13px;
      color: #94A3B8;
      height: 240px;
      overflow-y: auto;
      border: 1px solid #1E293B;
    }
    .log-line {
      margin-bottom: 8px;
      display: flex;
      gap: 12px;
    }
    .log-time { color: #64748B; }
    .log-tag { color: #38BDF8; font-weight: 600; }
    .log-text { color: #E2E8F0; }

    /* Intake Action Form Section 14 */
    .cta-box-wrapper {
      background: linear-gradient(135deg, #F0F6FF 0%, #FFFFFF 100%);
      border: 1px solid #BFDBFE;
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--shadow-card);
    }
    .form-control-custom {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 0 14px;
      font-size: 14px;
      margin-bottom: 16px;
      background: #FFFFFF;
    }
    .form-control-custom:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(24, 96, 232, 0.15);
    }

    /* Footer */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 1px solid #1E293B;
    }
    .footer-brand {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .footer-links-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links-list li {
      margin-bottom: 8px;
    }
    .footer-links-list a {
      color: #94A3B8;
    }
    .footer-links-list a:hover {
      color: #FFFFFF;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      margin-top: 40px;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .timeline-track { grid-template-columns: repeat(2, 1fr); }
      .tier-cards-wrap { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .section-padding { padding: 50px 0; }
      .hero-h1 { font-size: 28px; }
      .section-title { font-size: 24px; }
      .compare-wrap { grid-template-columns: 1fr; }
      .step-flow { grid-template-columns: 1fr; }
      .timeline-track { grid-template-columns: 1fr; }
      .site-header { height: auto; padding: 10px 0; }
      .nav-container { flex-direction: column; gap: 10px; height: auto; }
      .main-nav-links { gap: 16px; flex-wrap: wrap; justify-content: center; }
      .footer-bottom-bar { flex-direction: column; gap: 12px; text-align: center; }
    }

/* roulang page: category1 */
:root {
      --primary-color: #1860E8;
      --primary-hover: #1450C2;
      --accent-green: #00B578;
      --accent-orange: #FA8C16;
      --bg-light: #F4F7FB;
      --bg-white: #FFFFFF;
      --text-dark: #1E293B;
      --text-muted: #475569;
      --text-sub: #94A3B8;
      --border-color: #E2E8F0;
      --radius-base: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --shadow-card: 0 4px 20px -2px rgba(24, 96, 232, 0.06), 0 2px 6px -1px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 14px 28px -4px rgba(24, 96, 232, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.05);
      --transition-smooth: all 0.25s ease;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-white);
      color: var(--text-dark);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    /* Layout Sections */
    .section-padding {
      padding: 80px 0;
    }
    .section-bg-alt {
      background-color: var(--bg-light);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header.text-center {
      text-align: center;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      background-color: rgba(24, 96, 232, 0.08);
      border-radius: 50px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.7;
    }
    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      height: 72px;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 19px;
      font-weight: 700;
      color: var(--primary-color);
      letter-spacing: -0.2px;
    }
    .pulse-indicator {
      width: 10px;
      height: 10px;
      background-color: var(--accent-green);
      border-radius: 50%;
      position: relative;
      box-shadow: 0 0 0 0 rgba(0, 181, 120, 0.7);
      animation: pulseGreen 2s infinite cubic-bezier(0.66, 0, 0, 1);
    }
    @keyframes pulseGreen {
      to {
        box-shadow: 0 0 0 10px rgba(0, 181, 120, 0);
      }
    }
    .main-nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 28px;
    }
    .main-nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
    }
    .main-nav-links a:hover,
    .main-nav-links a.active {
      color: var(--primary-color);
    }
    .main-nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -18px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary-color);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-capsule {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      background: #EBF3FF;
      color: var(--primary-color);
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      border: 1px solid rgba(24, 96, 232, 0.15);
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-base);
      background-color: var(--primary-color);
      color: #ffffff !important;
      font-weight: 600;
      font-size: 14px;
      border: 1px solid transparent;
      box-shadow: 0 4px 12px rgba(24, 96, 232, 0.2);
      transition: var(--transition-smooth);
      cursor: pointer;
    }
    .btn-main:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(24, 96, 232, 0.3);
      transform: translateY(-2px);
    }

    /* Category Specific: Section 1 Header Filter Area */
    .filter-panel {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-card);
      margin-top: -20px;
    }
    .category-h1 {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .tag-filter-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      margin: 20px 0;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
    }
    .filter-btn {
      padding: 6px 16px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 500;
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      color: var(--text-muted);
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .filter-btn.active, .filter-btn:hover {
      background: var(--primary-color);
      color: #FFFFFF;
      border-color: var(--primary-color);
      box-shadow: 0 2px 8px rgba(24, 96, 232, 0.25);
    }
    .filter-status-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-sub);
    }

    /* Section 2: Media Resource Cards Grid */
    .video-feed-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      height: 100%;
      display: flex;
      flex-direction: column;
      margin-bottom: 24px;
    }
    .video-feed-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #BFDBFE;
    }
    .video-mock-thumb {
      height: 170px;
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .video-mock-thumb::before {
      content: '';
      position: absolute;
      width: 100%;
      height: 100%;
      background: repeating-linear-gradient(45deg, rgba(24, 96, 232, 0.05), rgba(24, 96, 232, 0.05) 10px, transparent 10px, transparent 20px);
    }
    .play-badge-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
      border: 2px solid rgba(255, 255, 255, 0.8);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 18px;
      backdrop-filter: blur(4px);
      position: relative;
      z-index: 2;
    }
    .thumb-tag-top {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(0, 0, 0, 0.65);
      color: #38BDF8;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 4px;
      z-index: 2;
      font-family: monospace;
    }
    .thumb-time-bottom {
      position: absolute;
      bottom: 10px;
      right: 12px;
      background: rgba(0, 0, 0, 0.75);
      color: #FFFFFF;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 4px;
      z-index: 2;
    }
    .video-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .video-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .video-meta-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 8px;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 16px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border-color);
    }
    .video-meta-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .meta-value-good {
      color: var(--accent-green);
      font-weight: 600;
    }
    .video-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: auto;
    }
    .stream-status-pill {
      font-size: 12px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .stream-status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-green);
    }
    .btn-connect {
      padding: 6px 14px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-color);
      background: rgba(24, 96, 232, 0.08);
      border-radius: 4px;
      transition: var(--transition-smooth);
    }
    .btn-connect:hover {
      background: var(--primary-color);
      color: #FFFFFF;
    }

    /* Pagination & Load More */
    .catalog-actions-bar {
      margin-top: 30px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 20px;
    }
    .custom-pagination {
      display: inline-flex;
      gap: 6px;
      align-items: center;
    }
    .page-num-link {
      width: 38px;
      height: 38px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border-color);
      color: var(--text-dark);
      font-weight: 600;
      font-size: 14px;
      background: #FFFFFF;
    }
    .page-num-link.active, .page-num-link:hover {
      background: var(--primary-color);
      color: #FFFFFF;
      border-color: var(--primary-color);
    }

    /* Section 3: Protocol Support Metrics */
    .metric-banner-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      text-align: left;
      height: 100%;
      border-left: 4px solid var(--primary-color);
    }
    .metric-number-big {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: monospace;
    }
    .metric-label-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .metric-desc-sub {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Section 4: Trend Ranking Board */
    .rank-board-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-card);
    }
    .rank-row {
      display: flex;
      align-items: center;
      padding: 16px 0;
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition-smooth);
    }
    .rank-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .rank-num-badge {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: #F1F5F9;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      margin-right: 18px;
      flex-shrink: 0;
    }
    .rank-row:nth-child(1) .rank-num-badge {
      background: #FEF3C7;
      color: #D97706;
    }
    .rank-row:nth-child(2) .rank-num-badge {
      background: #E2E8F0;
      color: #475569;
    }
    .rank-row:nth-child(3) .rank-num-badge {
      background: #FFEDD5;
      color: #C2410C;
    }
    .rank-info {
      flex-grow: 1;
    }
    .rank-title-text {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .rank-sub-meta {
      font-size: 12px;
      color: var(--text-sub);
      display: flex;
      gap: 16px;
    }
    .rank-load-bar-wrap {
      width: 140px;
      margin-left: 20px;
      flex-shrink: 0;
    }
    .load-bar-bg {
      height: 8px;
      background: #E2E8F0;
      border-radius: 4px;
      overflow: hidden;
      margin-bottom: 4px;
    }
    .load-bar-fill {
      height: 100%;
      background: var(--primary-color);
      border-radius: 4px;
    }

    /* Section 5: Optimization Guide */
    .guide-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
      height: 100%;
    }
    .guide-step-item {
      display: flex;
      gap: 16px;
      margin-bottom: 22px;
    }
    .guide-step-item:last-child {
      margin-bottom: 0;
    }
    .step-counter {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: rgba(24, 96, 232, 0.1);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }

    /* Section 6: Disaster Recovery Cards */
    .sla-shield-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 28px;
      box-shadow: var(--shadow-card);
      text-align: left;
      height: 100%;
      transition: var(--transition-smooth);
    }
    .sla-shield-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .sla-icon-blob {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: #EFF6FF;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 18px;
    }

    /* Section 7: FAQ Card Grid */
    .faq-compact-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-base);
      padding: 22px 24px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 20px;
      height: 100%;
    }
    .faq-q-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-q-tag {
      background: #1860E8;
      color: #FFF;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }
    .faq-a-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Footer */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding: 70px 0 24px;
      border-top: 1px solid #1E293B;
    }
    .footer-brand {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      color: #94A3B8;
      font-size: 14px;
    }
    .footer-links-list a:hover {
      color: #38BDF8;
    }
    .footer-bottom-bar {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid #1E293B;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 13px;
    }

    @media (max-width: 800px) {
      .main-nav-links { display: none; }
      .category-h1 { font-size: 24px; }
      .section-padding { padding: 50px 0; }
      .rank-load-bar-wrap { display: none; }
    }