/* roulang page: index */
:root {
      --primary: #1E56A0;
      --primary-hover: #163f75;
      --primary-light: #EBF3FC;
      --accent: #D97706;
      --accent-light: #FEF3C7;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-card: 0 10px 25px -5px rgba(30, 86, 160, 0.08), 0 8px 10px -6px rgba(30, 86, 160, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(30, 86, 160, 0.16);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }
    ul { list-style: none; margin: 0; padding: 0; }

    /* Top Bar & Header */
    .site-header {
      background: #FFFFFF;
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    }
    .top-tier {
      padding: 12px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.6rem;
      color: var(--primary);
    }
    .header-search {
      flex: 1;
      max-width: 480px;
      margin: 0 30px;
      position: relative;
    }
    .header-search input {
      width: 100%;
      height: 40px;
      padding: 0 45px 0 16px;
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 0.9rem;
      outline: none;
      transition: var(--transition);
      margin-bottom: 0;
    }
    .header-search input:focus {
      border-color: var(--primary);
      background: #FFF;
      box-shadow: 0 0 0 3px rgba(30, 86, 160, 0.12);
    }
    .header-search button {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-ghost {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-ghost:hover {
      background: var(--primary-light);
    }
    .btn-primary-glow {
      background: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(30, 86, 160, 0.25);
    }
    .btn-primary-glow:hover {
      background: var(--primary-hover);
      color: #FFF;
      transform: translateY(-1px);
    }

    /* Channel Tabs Subnav */
    .tabs-tier {
      background: #F1F5F9;
      border-top: 1px solid #E2E8F0;
      height: 48px;
      overflow: hidden;
    }
    .tabs-nav-scroller {
      display: flex;
      align-items: center;
      height: 100%;
      gap: 8px;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .tabs-nav-scroller::-webkit-scrollbar { display: none; }
    .tab-pill-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .tab-pill-link:hover, .tab-pill-link.active {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      font-weight: 600;
    }
    .tab-pill-link .badge-tag {
      font-size: 0.7rem;
      background: var(--accent);
      color: #FFF;
      padding: 2px 6px;
      border-radius: 10px;
    }

    /* Sections Shared Styling */
    .section-spacing {
      padding: 75px 0;
      position: relative;
    }
    .section-spacing.bg-white {
      background-color: #FFFFFF;
    }
    .section-spacing.bg-muted {
      background-color: #F8FAFC;
    }
    .sec-head-area {
      text-align: center;
      max-width: 840px;
      margin: 0 auto 50px auto;
    }
    .sec-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .sec-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .sec-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin: 0;
    }

    /* Card Base System */
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    /* Hero Section */
    .hero-wrap {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(30, 86, 160, 0.08) 0%, rgba(248, 250, 252, 1) 70%), #F8FAFC;
      padding: 85px 0 75px 0;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      color: var(--primary);
    }
    .hero-intro {
      font-size: 1.06rem;
      color: var(--text-muted);
      line-height: 1.85;
      margin-bottom: 32px;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }
    .btn-hero {
      padding: 14px 32px;
      font-size: 1.02rem;
      font-weight: 700;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .hero-stat-item strong {
      display: block;
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
    }
    .hero-stat-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .hero-player-stage {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: 0 20px 40px -15px rgba(30, 86, 160, 0.12);
      position: relative;
    }
    .video-viewport {
      background: #0F172A;
      border-radius: 8px;
      height: 310px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .viewport-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(15, 23, 42, 0.2) 0%, rgba(15, 23, 42, 0.85) 100%);
      z-index: 1;
    }
    .play-pulse-btn {
      position: relative;
      z-index: 2;
      width: 72px;
      height: 72px;
      background: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 1.6rem;
      cursor: pointer;
      box-shadow: 0 0 0 10px rgba(30, 86, 160, 0.35);
      transition: var(--transition);
    }
    .play-pulse-btn:hover {
      transform: scale(1.08);
      background: #0D6EFD;
      box-shadow: 0 0 0 16px rgba(13, 110, 253, 0.4);
    }
    .viewport-hud {
      position: absolute;
      bottom: 16px;
      left: 20px;
      right: 20px;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #FFF;
      font-size: 0.82rem;
    }
    .stage-diagnostics {
      margin-top: 18px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }
    .diag-box {
      background: var(--bg-main);
      padding: 10px 14px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
    }
    .diag-box label {
      display: block;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 2px;
    }
    .diag-box val {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    /* Section 1: HUD Metrics */
    .hud-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .hud-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-card);
      position: relative;
    }
    .hud-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--primary);
    }
    .hud-title {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .hud-value {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1;
      margin-bottom: 14px;
    }
    .hud-value small {
      font-size: 1rem;
      font-weight: 500;
      color: var(--text-muted);
    }
    .hud-progress {
      height: 6px;
      background: #E2E8F0;
      border-radius: 3px;
      overflow: hidden;
      margin-bottom: 8px;
    }
    .hud-progress-fill {
      height: 100%;
      background: linear-gradient(90deg, #1E56A0, #0D6EFD);
      border-radius: 3px;
    }
    .hud-sub {
      font-size: 0.78rem;
      color: #64748B;
      display: flex;
      justify-content: space-between;
    }

    /* Section 2: Matrix Cards */
    .matrix-card {
      padding: 28px 24px;
      height: 100%;
    }
    .matrix-badge-rank {
      position: absolute;
      top: 18px;
      right: 18px;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      background: var(--accent-light);
      color: var(--accent);
      border: 1px solid rgba(217, 119, 6, 0.2);
    }
    .matrix-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
    }
    .matrix-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .matrix-p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .matrix-specs-list {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      margin-bottom: 22px;
    }
    .matrix-specs-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }
    .matrix-specs-list li strong {
      color: var(--text-main);
    }
    .btn-matrix-entry {
      width: 100%;
      text-align: center;
      padding: 10px;
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      transition: var(--transition);
    }
    .matrix-card:hover .btn-matrix-entry {
      background: var(--primary);
      color: #FFF;
      border-color: var(--primary);
    }

    /* Section 3: Dual Stream Arena */
    .arena-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-card);
    }
    .arena-split {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 30px;
      align-items: center;
    }
    .arena-side {
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 24px;
    }
    .arena-side.highlight {
      background: #F0F7FF;
      border-color: #93C5FD;
    }
    .arena-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .vs-circle {
      width: 50px;
      height: 50px;
      background: var(--primary);
      color: #FFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-style: italic;
      box-shadow: 0 4px 10px rgba(30, 86, 160, 0.3);
    }
    .arena-metric-row {
      margin-bottom: 16px;
    }
    .arena-metric-row label {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
    }

    /* Section 4: Architecture Timeline */
    .timeline-wrap {
      position: relative;
      max-width: 840px;
      margin: 0 auto;
      padding: 20px 0;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: #CBD5E1;
      transform: translateX(-50%);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 40px;
      width: 50%;
      padding-right: 40px;
    }
    .timeline-item.right {
      margin-left: 50%;
      padding-right: 0;
      padding-left: 40px;
    }
    .timeline-dot {
      position: absolute;
      right: -8px;
      top: 10px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #FFF;
      box-shadow: 0 0 0 2px var(--primary);
    }
    .timeline-item.right .timeline-dot {
      left: -8px;
      right: auto;
    }
    .timeline-card {
      background: #FFF;
      padding: 22px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      box-shadow: var(--shadow-sm);
    }
    .timeline-year {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
      display: block;
    }
    .timeline-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .timeline-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin: 0;
    }

    /* Section 5: CMS Post Grid */
    .post-card {
      padding: 0;
      overflow: hidden;
    }
    .post-thumb {
      height: 190px;
      background: #E2E8F0;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #94A3B8;
      font-size: 2.5rem;
      background-size: cover;
      background-position: center;
    }
    .post-thumb-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.85);
      color: #FFF;
      font-size: 0.72rem;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .post-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .post-time {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .post-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .post-title a:hover {
      color: var(--primary);
    }
    .post-excerpt {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex: 1;
    }
    .post-more-btn {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .empty-cms-box {
      background: #FFFFFF;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 50px 20px;
      text-align: center;
      color: var(--text-muted);
      font-size: 1rem;
    }

    /* Section 6: Security & Engine */
    .pillar-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      height: 100%;
      box-shadow: var(--shadow-card);
    }
    .pillar-icon {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .pillar-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .pillar-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Section 7: Multi-filter Bar */
    .filter-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-card);
      margin-bottom: 30px;
    }
    .filter-row {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 14px;
    }
    .filter-row:last-child {
      margin-bottom: 0;
    }
    .filter-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      min-width: 80px;
    }
    .filter-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-chip {
      font-size: 0.82rem;
      padding: 5px 14px;
      background: var(--bg-main);
      border-radius: 4px;
      color: var(--text-main);
      cursor: pointer;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .filter-chip.active, .filter-chip:hover {
      background: var(--primary);
      color: #FFF;
      border-color: var(--primary);
    }

    /* Section 8: Ladder Table */
    .ladder-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .ladder-table {
      width: 100%;
      border-collapse: collapse;
      margin: 0;
    }
    .ladder-table th {
      background: #F1F5F9;
      color: var(--text-muted);
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
      text-align: left;
    }
    .ladder-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9rem;
      color: var(--text-main);
      vertical-align: middle;
    }
    .ladder-table tr:last-child td {
      border-bottom: none;
    }
    .rank-num {
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 4px;
      font-weight: 800;
      font-size: 0.85rem;
      background: #E2E8F0;
      color: var(--text-muted);
    }
    .rank-num.top1 { background: #F59E0B; color: #FFF; }
    .rank-num.top2 { background: #94A3B8; color: #FFF; }
    .rank-num.top3 { background: #B45309; color: #FFF; }

    /* Section 9: Device Matrix */
    .device-box {
      text-align: center;
      padding: 30px 20px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #FFF;
      box-shadow: var(--shadow-card);
      height: 100%;
    }
    .device-icon-wrap {
      width: 64px;
      height: 64px;
      margin: 0 auto 18px auto;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
    }
    .device-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .device-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* Section 10: Step Flow */
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      position: relative;
      box-shadow: var(--shadow-card);
      height: 100%;
    }
    .step-badge {
      font-size: 2.2rem;
      font-weight: 900;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Section 11: FAQ */
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      padding: 22px 24px;
      box-shadow: var(--shadow-sm);
    }
    .faq-q {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-q i {
      color: var(--primary);
      font-size: 1.1rem;
    }
    .faq-a {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin: 0;
      padding-left: 28px;
    }

    /* Section 12: Speedtest Form */
    .speedtest-panel {
      background: linear-gradient(135deg, #1E56A0 0%, #0F2D59 100%);
      color: #FFF;
      border-radius: var(--radius-lg);
      padding: 45px 40px;
      box-shadow: var(--shadow-hover);
    }
    .speedtest-panel h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: #FFF;
    }
    .speedtest-panel p {
      color: #CBD5E1;
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .form-inline-wrap {
      display: flex;
      gap: 12px;
      max-width: 600px;
    }
    .form-inline-wrap input {
      flex: 1;
      height: 48px;
      padding: 0 16px;
      border-radius: 6px;
      border: 1px solid rgba(255,255,255,0.25);
      background: rgba(255,255,255,0.1);
      color: #FFF;
      font-size: 0.95rem;
      margin-bottom: 0;
      outline: none;
    }
    .form-inline-wrap input::placeholder {
      color: #94A3B8;
    }
    .form-inline-wrap input:focus {
      border-color: #93C5FD;
      background: rgba(255,255,255,0.18);
    }
    .form-inline-wrap button {
      height: 48px;
      padding: 0 24px;
      border-radius: 6px;
      background: #F59E0B;
      color: #FFF;
      font-weight: 700;
      border: none;
      cursor: pointer;
      white-space: nowrap;
      transition: var(--transition);
    }
    .form-inline-wrap button:hover {
      background: #D97706;
    }

    /* Footer */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand-desc {
      line-height: 1.8;
      margin-bottom: 20px;
      color: #64748B;
      font-size: 0.88rem;
    }
    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid #1E293B;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.82rem;
      color: #64748B;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hud-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-h1 { font-size: 2.2rem; }
    }
    @media (max-width: 768px) {
      .header-search { display: none; }
      .hud-grid { grid-template-columns: 1fr; }
      .arena-split { grid-template-columns: 1fr; }
      .vs-circle { margin: 10px auto; }
      .timeline-wrap::before { left: 20px; }
      .timeline-item { width: 100%; padding-right: 0; padding-left: 50px; }
      .timeline-item.right { margin-left: 0; padding-left: 50px; }
      .timeline-dot, .timeline-item.right .timeline-dot { left: 12px; right: auto; }
      .form-inline-wrap { flex-direction: column; }
      .form-inline-wrap button { width: 100%; }
      .hero-stats-row { grid-template-columns: 1fr; }
    }

/* roulang page: category1 */
:root {
      --primary: #1E56A0;
      --primary-hover: #163f75;
      --primary-light: #EBF3FC;
      --accent: #D97706;
      --accent-light: #FEF3C7;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-card: 0 10px 25px -5px rgba(30, 86, 160, 0.08), 0 8px 10px -6px rgba(30, 86, 160, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(30, 86, 160, 0.16);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }

    /* Top Bar & Header */
    .site-header {
      background: #FFFFFF;
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    }
    .top-tier {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.6rem;
      color: var(--primary);
    }
    .header-search {
      flex: 1;
      max-width: 480px;
      margin: 0 30px;
      position: relative;
    }
    .header-search input {
      width: 100%;
      height: 40px;
      padding: 0 45px 0 16px;
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 0.9rem;
      outline: none;
      transition: var(--transition);
      margin-bottom: 0;
    }
    .header-search input:focus {
      border-color: var(--primary);
      background: #FFF;
      box-shadow: 0 0 0 3px rgba(30, 86, 160, 0.12);
    }
    .header-search button {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-ghost {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-ghost:hover {
      background: var(--primary-light);
    }
    .btn-primary-glow {
      background: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(30, 86, 160, 0.25);
    }
    .btn-primary-glow:hover {
      background: var(--primary-hover);
      color: #FFF;
      transform: translateY(-1px);
    }

    /* Channel Tabs Subnav */
    .tabs-tier {
      background: #F1F5F9;
      border-top: 1px solid #E2E8F0;
      height: 48px;
      overflow: hidden;
    }
    .tabs-nav-scroller {
      display: flex;
      align-items: center;
      height: 100%;
      gap: 8px;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .tabs-nav-scroller::-webkit-scrollbar { display: none; }
    .tab-pill-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .tab-pill-link:hover, .tab-pill-link.active {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      font-weight: 600;
    }
    .tab-pill-link .badge-tag {
      font-size: 0.7rem;
      background: var(--accent);
      color: #FFF;
      padding: 2px 6px;
      border-radius: 10px;
    }

    /* Section Global System */
    .section-spacing {
      padding: 65px 0;
      position: relative;
    }
    .section-spacing.bg-white { background-color: #FFFFFF; }
    .section-spacing.bg-muted { background-color: #F8FAFC; }
    .sec-head-area {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 40px auto;
    }
    .sec-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .sec-title {
      font-size: 1.95rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .sec-desc {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin: 0;
    }

    /* HUD Status Header */
    .hud-header-panel {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 50px 0 45px 0;
      border-bottom: 1px solid #334155;
      position: relative;
      overflow: hidden;
    }
    .hud-header-panel::before {
      content: "";
      position: absolute;
      top: 0; right: 0; bottom: 0; left: 0;
      background: radial-gradient(circle at 80% 30%, rgba(30, 86, 160, 0.35) 0%, transparent 70%);
      pointer-events: none;
    }
    .hud-title-wrap {
      position: relative;
      z-index: 1;
    }
    .hud-h1 {
      font-size: 2.2rem;
      font-weight: 900;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      color: #F8FAFC;
    }
    .hud-h1 span {
      color: #38BDF8;
    }
    .hud-subtitle {
      color: #94A3B8;
      font-size: 1rem;
      line-height: 1.7;
      max-width: 780px;
      margin-bottom: 25px;
    }
    .hud-status-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 15px;
    }
    .hud-stat-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      backdrop-filter: blur(8px);
      position: relative;
    }
    .hud-stat-box::after {
      content: "";
      position: absolute;
      top: 0; left: 0; width: 3px; height: 100%;
      background: #38BDF8;
      border-radius: 3px 0 0 3px;
    }
    .hud-stat-label {
      font-size: 0.8rem;
      color: #94A3B8;
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 6px;
    }
    .hud-stat-val {
      font-size: 1.45rem;
      font-weight: 800;
      color: #FFFFFF;
      font-family: monospace, sans-serif;
    }
    .hud-stat-val small {
      font-size: 0.8rem;
      color: #38BDF8;
      margin-left: 4px;
    }

    /* Filter Console Bar */
    .filter-console-wrap {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 28px;
      box-shadow: var(--shadow-card);
      margin-bottom: 30px;
    }
    .filter-row {
      display: flex;
      align-items: center;
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
    }
    .filter-row:last-child { border-bottom: none; }
    .filter-label {
      width: 100px;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 6px;
      flex-shrink: 0;
    }
    .filter-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .pill-btn {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 16px;
      font-size: 0.84rem;
      color: var(--text-main);
      background: var(--bg-main);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }
    .pill-btn:hover {
      background: #E2E8F0;
      color: var(--primary);
    }
    .pill-btn.active {
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 600;
      box-shadow: 0 2px 6px rgba(30, 86, 160, 0.3);
    }

    /* Media Stream Cards */
    .stream-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .stream-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }
    .stream-thumb {
      position: relative;
      background: #0F172A;
      aspect-ratio: 16 / 9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .stream-thumb-placeholder {
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: #64748B;
    }
    .stream-thumb-placeholder i {
      font-size: 2.2rem;
      color: #38BDF8;
      margin-bottom: 8px;
      opacity: 0.85;
    }
    .stream-tag-tier {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(15, 23, 42, 0.8);
      color: #FFF;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(4px);
    }
    .stream-badge-rank {
      position: absolute;
      top: 10px;
      right: 10px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.72rem;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    }
    .stream-duration {
      position: absolute;
      bottom: 8px;
      right: 8px;
      background: rgba(0, 0, 0, 0.75);
      color: #FFFFFF;
      font-size: 0.72rem;
      padding: 2px 6px;
      border-radius: 3px;
      font-family: monospace;
    }
    .stream-body {
      padding: 18px 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .stream-title {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .stream-title a:hover {
      color: var(--primary);
    }
    .stream-excerpt {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
      flex: 1;
    }
    .stream-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.78rem;
      color: var(--text-muted);
      border-top: 1px solid var(--border-color);
      padding-top: 12px;
    }
    .stream-meta-left {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* Empty state */
    .empty-state-wrap {
      background: #FFFFFF;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 50px 20px;
      color: var(--text-muted);
    }

    /* Rank Ladder List */
    .rank-ladder-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-card);
    }
    .rank-row {
      display: flex;
      align-items: center;
      padding: 14px 0;
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .rank-row:last-child { border-bottom: none; }
    .rank-row:hover { background: var(--primary-light); padding-left: 10px; border-radius: 6px; }
    .rank-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--bg-main);
      color: var(--text-muted);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      margin-right: 16px;
      flex-shrink: 0;
    }
    .rank-num.top-1 { background: #DC2626; color: #FFF; }
    .rank-num.top-2 { background: var(--accent); color: #FFF; }
    .rank-num.top-3 { background: #2563EB; color: #FFF; }
    .rank-info { flex: 1; }
    .rank-name { font-size: 0.95rem; font-weight: 700; color: var(--text-main); margin-bottom: 2px; }
    .rank-tags { font-size: 0.78rem; color: var(--text-muted); display: flex; gap: 12px; }
    .rank-bar-wrap { width: 140px; margin-left: 20px; flex-shrink: 0; }
    .energy-bar-bg { width: 100%; height: 8px; background: #E2E8F0; border-radius: 4px; overflow: hidden; position: relative; }
    .energy-bar-fill { height: 100%; background: linear-gradient(90deg, #38BDF8 0%, var(--primary) 100%); border-radius: 4px; }
    .energy-bar-num { font-size: 0.75rem; color: var(--primary); font-weight: 700; text-align: right; margin-top: 3px; font-family: monospace; }

    /* Specification Table */
    .spec-table-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow-x: auto;
    }
    .custom-spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      margin-bottom: 0;
    }
    .custom-spec-table th {
      background: #F8FAFC;
      color: var(--text-main);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 2px solid var(--border-color);
      font-size: 0.9rem;
    }
    .custom-spec-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-muted);
      font-size: 0.88rem;
    }
    .custom-spec-table tr:hover td {
      background: #F1F5F9;
    }
    .spec-status-pill {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 0.78rem;
      padding: 2px 8px;
      border-radius: 12px;
      font-weight: 600;
    }
    .spec-status-pill.online { background: #DCFCE7; color: #166534; }
    .spec-status-pill.optimal { background: #E0E7FF; color: #3730A3; }

    /* FAQ Accordion */
    .faq-accordion-box {
      max-width: 920px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-item:hover { border-color: #CBD5E1; }
    .faq-q {
      padding: 18px 22px;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-q i {
      color: var(--primary);
      transition: transform 0.2s ease;
    }
    .faq-a {
      padding: 0 22px 20px 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* Fast CTA Strip */
    .fast-channel-cta {
      background: linear-gradient(135deg, var(--primary) 0%, #0F172A 100%);
      border-radius: var(--radius-lg);
      padding: 40px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-hover);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .fast-cta-text h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: #FFFFFF;
    }
    .fast-cta-text p {
      color: #CBD5E1;
      font-size: 0.95rem;
      margin-bottom: 0;
      max-width: 650px;
    }
    .fast-cta-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-white-action {
      background: #FFFFFF;
      color: var(--primary);
      font-weight: 700;
      padding: 12px 26px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.15);
      transition: var(--transition);
    }
    .btn-white-action:hover {
      background: #F8FAFC;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }

    /* Footer Shared */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 65px 0 30px 0;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
    }
    .footer-brand-desc {
      font-size: 0.86rem;
      line-height: 1.75;
      color: #94A3B8;
      margin-bottom: 20px;
    }
    .footer-col-title {
      font-size: 0.98rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      margin-top: 50px;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.8rem;
    }

    @media (max-width: 1024px) {
      .hud-status-grid { grid-template-columns: repeat(2, 1fr); }
      .header-search { margin: 0 15px; }
    }
    @media (max-width: 640px) {
      .top-tier { height: auto; padding: 14px 0; flex-wrap: wrap; gap: 12px; }
      .header-search { order: 3; max-width: 100%; margin: 0; }
      .header-actions { margin-left: auto; }
      .hud-h1 { font-size: 1.7rem; }
      .hud-status-grid { grid-template-columns: 1fr; }
      .fast-channel-cta { padding: 30px 20px; flex-direction: column; text-align: center; }
      .fast-cta-actions { width: 100%; justify-content: center; }
      .rank-bar-wrap { display: none; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }

/* roulang page: article */
:root {
      --primary: #1E56A0;
      --primary-hover: #163f75;
      --primary-light: #EBF3FC;
      --accent: #D97706;
      --accent-light: #FEF3C7;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-card: 0 10px 25px -5px rgba(30, 86, 160, 0.08), 0 8px 10px -6px rgba(30, 86, 160, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(30, 86, 160, 0.16);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.65;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

    /* Top Bar & Header */
    .site-header {
      background: #FFFFFF;
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    }
    .top-tier {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
      flex-shrink: 0;
    }
    .brand-logo i {
      font-size: 1.6rem;
      color: var(--primary);
    }
    .header-search {
      flex: 1;
      max-width: 460px;
      margin: 0 24px;
      position: relative;
    }
    .header-search input {
      width: 100%;
      height: 40px;
      padding: 0 45px 0 16px;
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 0.9rem;
      outline: none;
      transition: var(--transition);
      margin-bottom: 0;
    }
    .header-search input:focus {
      border-color: var(--primary);
      background: #FFF;
      box-shadow: 0 0 0 3px rgba(30, 86, 160, 0.12);
    }
    .header-search button {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .btn-nav-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-ghost {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-ghost:hover {
      background: var(--primary-light);
    }
    .btn-primary-glow {
      background: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(30, 86, 160, 0.25);
    }
    .btn-primary-glow:hover {
      background: var(--primary-hover);
      color: #FFF;
      transform: translateY(-1px);
    }

    /* Channel Tabs Subnav */
    .tabs-tier {
      background: #F1F5F9;
      border-top: 1px solid #E2E8F0;
      height: 48px;
      overflow: hidden;
    }
    .tabs-nav-scroller {
      display: flex;
      align-items: center;
      height: 100%;
      gap: 8px;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .tabs-nav-scroller::-webkit-scrollbar { display: none; }
    .tab-pill-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .tab-pill-link:hover, .tab-pill-link.active {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      font-weight: 600;
    }
    .tab-pill-link .badge-tag {
      font-size: 0.7rem;
      background: var(--accent);
      color: #FFF;
      padding: 2px 6px;
      border-radius: 10px;
    }

    /* Layout & Structure */
    .article-page-wrap {
      padding: 40px 0 80px 0;
    }
    .article-main-col {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      padding: 40px 45px;
      margin-bottom: 35px;
    }

    /* Section 1: Breadcrumb */
    .crumb-bar {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid #F1F5F9;
    }
    .crumb-bar a {
      color: var(--text-muted);
    }
    .crumb-bar a:hover {
      color: var(--primary);
    }
    .crumb-separator {
      font-size: 0.75rem;
      color: #CBD5E1;
    }
    .crumb-current {
      color: var(--text-main);
      font-weight: 600;
    }

    /* Section 2: Article Header */
    .article-header {
      margin-bottom: 28px;
    }
    .post-badges-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
      flex-wrap: wrap;
    }
    .badge-channel {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 4px 12px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }
    .badge-quality {
      background: var(--accent-light);
      color: var(--accent);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 4px 10px;
      border-radius: 4px;
    }
    .badge-status {
      background: #DCFCE7;
      color: #15803D;
      font-weight: 600;
      font-size: 0.8rem;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .article-title-h1 {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .post-meta-strip {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .post-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* Section 3: Technical HUD Bar */
    .hud-specs-panel {
      background: #F8FAFC;
      border: 1px solid #E2E8F0;
      border-left: 4px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 18px 22px;
      margin-bottom: 35px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
      gap: 16px;
    }
    .hud-item {
      display: flex;
      flex-direction: column;
    }
    .hud-label {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-transform: uppercase;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 4px;
    }
    .hud-val {
      font-size: 0.96rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .hud-val.highlight {
      color: var(--primary);
    }
    .hud-dot {
      width: 8px;
      height: 8px;
      background: #22C55E;
      border-radius: 50%;
      box-shadow: 0 0 8px #22C55E;
      display: inline-block;
    }

    /* Section 4: Main Reading Flow */
    .article-body-flow {
      max-width: 720px;
      margin: 0 auto;
      font-size: 1.05rem;
      line-height: 1.85;
      color: #334155;
    }
    .article-body-flow p {
      margin-bottom: 22px;
      text-align: justify;
    }
    .article-body-flow h2 {
      font-size: 1.55rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 38px 0 18px 0;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--primary-light);
      position: relative;
    }
    .article-body-flow h2::before {
      content: '';
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 48px;
      height: 2px;
      background: var(--primary);
    }
    .article-body-flow h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin: 28px 0 14px 0;
    }
    .article-body-flow blockquote {
      border-left: 4px solid var(--primary);
      background: var(--primary-light);
      padding: 16px 20px;
      margin: 24px 0;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      font-style: normal;
      color: #1E3A8A;
      font-size: 0.98rem;
      line-height: 1.7;
    }
    .article-body-flow ul, .article-body-flow ol {
      margin: 0 0 24px 20px;
      padding: 0;
    }
    .article-body-flow li {
      margin-bottom: 8px;
    }
    .article-body-flow img {
      border-radius: var(--radius-md);
      margin: 28px auto;
      box-shadow: var(--shadow-sm);
    }

    /* Content Not Found Empty State */
    .empty-state-box {
      text-align: center;
      padding: 60px 20px;
      background: #F8FAFC;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
    }
    .empty-state-box i {
      font-size: 3.5rem;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .empty-state-box h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .empty-state-box p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 0.95rem;
    }

    /* Section 5: Interaction Tools */
    .article-toolbar {
      max-width: 720px;
      margin: 35px auto 0 auto;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .toolbar-left, .toolbar-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-tool {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 15px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      color: var(--text-muted);
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-tool:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }
    .btn-tool.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #FFFFFF;
    }

    /* Section 6: Protocol & Tech Guarantee Box */
    .tech-guarantee-card {
      background: #F1F5F9;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 40px;
    }
    .tech-guarantee-header {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
    }
    .guarantee-col {
      background: #FFFFFF;
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #E2E8F0;
    }
    .guarantee-col-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .guarantee-col-desc {
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin: 0;
    }

    /* Section 7: Context Navigation */
    .context-nav-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 35px;
    }
    .nav-target-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 20px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .nav-target-box:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .nav-label-small {
      font-size: 0.78rem;
      color: var(--text-muted);
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-target-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    /* Section 8: Related Stream Matrix */
    .related-matrix-sec {
      margin-top: 50px;
    }
    .sec-block-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .rec-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .rec-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }
    .rec-thumb-box {
      position: relative;
      height: 140px;
      background: linear-gradient(135deg, #1E56A0 0%, #0F172A 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255,255,255,0.75);
    }
    .rec-thumb-box i {
      font-size: 2.2rem;
    }
    .rec-badge-pos {
      position: absolute;
      top: 10px;
      right: 10px;
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(4px);
      color: #FFF;
      font-size: 0.72rem;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .rec-content {
      padding: 16px;flex: 1;
      display: flex;
      flex-direction: column;
    }
    .rec-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .rec-meta {
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* Section 9: Dispatch HUD Action CTA */
    .article-dispatch-cta {
      background: linear-gradient(135deg, #1E56A0 0%, #163F75 100%);
      border-radius: var(--radius-lg);
      padding: 35px 40px;
      color: #FFFFFF;
      margin-top: 45px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(30, 86, 160, 0.25);
    }
    .dispatch-cta-inner {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .dispatch-cta-title {
      font-size: 1.55rem;
      font-weight: 800;
      margin-bottom: 8px;
      line-height: 1.3;
    }
    .dispatch-cta-desc {
      font-size: 0.94rem;
      color: #E2E8F0;
      max-width: 620px;
      line-height: 1.65;
      margin: 0;
    }
    .btn-dispatch {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      color: var(--primary);
      font-weight: 700;
      font-size: 0.96rem;
      padding: 12px 28px;
      border-radius: 6px;
      box-shadow: 0 4px 14px rgba(0,0,0,0.15);
      white-space: nowrap;
    }
    .btn-dispatch:hover {
      background: #F8FAFC;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }

    /* Footer Components */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid #1E293B;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand-desc {
      font-size: 0.88rem;
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 24px;
    }
    .footer-col-title {
      color: #F8FAFC;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 0.86rem;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      margin-top: 50px;
      padding-top: 25px;
      font-size: 0.82rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      color: #64748B;
    }

    /* Responsive */
    @media screen and (max-width: 1024px) {
      .header-search { max-width: 300px; margin: 0 16px; }
      .article-main-col { padding: 30px 24px; }
    }
    @media screen and (max-width: 768px) {
      .top-tier { height: auto; padding: 12px 0; flex-wrap: wrap; gap: 12px; }
      .header-search { order: 3; max-width: 100%; margin: 8px 0 0 0; width: 100%; }
      .header-actions { margin-left: auto; }
      .article-title-h1 { font-size: 1.65rem; }
      .hud-specs-panel { grid-template-columns: repeat(2, 1fr); }
      .context-nav-card { grid-template-columns: 1fr; }
      .dispatch-cta-inner { flex-direction: column; align-items: flex-start; }
      .btn-dispatch { width: 100%; justify-content: center; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }