/* roulang page: index */
:root {
      --bg-base: #070B19;
      --bg-surface: #0D1630;
      --bg-card: rgba(16, 28, 58, 0.72);
      --bg-card-hover: rgba(23, 38, 77, 0.85);
      --primary-purple: #7B61FF;
      --primary-blue: #4E80EE;
      --accent-cyan: #00E5FF;
      --accent-amber: #F5A623;
      --text-heading: #FFFFFF;
      --text-body: #C5D1E8;
      --text-muted: #7A8BA6;
      --border-card: rgba(123, 97, 255, 0.22);
      --border-card-hover: rgba(0, 229, 255, 0.45);
      --shadow-glow: 0 0 25px rgba(78, 128, 238, 0.35);
      --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    /* Reset & Base */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-stack);
      background-color: var(--bg-base);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(123, 97, 255, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 65%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
        linear-gradient(180deg, #070B19 0%, #0D1630 100%);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 15px;
      min-height: 100vh;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--accent-cyan);
      text-decoration: none;
      transition: all 0.25s ease;
    }
    a:hover, a:focus {
      color: #7BE9FF;
      text-decoration: none;
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-heading);
      font-weight: 700;
      line-height: 1.35;
      letter-spacing: -0.01em;
      margin-bottom: 0.6em;
    }
    p {
      margin-bottom: 1.1rem;
      color: var(--text-body);
    }

    /* Top Dual-Bar Navigation */
    .portal-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background: rgba(7, 11, 25, 0.88);
      border-bottom: 1px solid rgba(123, 97, 255, 0.2);
    }
    .nav-top-bar {
      padding: 0.55rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-icon-shield {
      width: 34px;
      height: 34px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 16px;
      box-shadow: 0 0 14px rgba(123, 97, 255, 0.5);
    }
    .brand-title {
      font-size: 1.28rem;
      font-weight: 800;
      background: linear-gradient(90deg, #FFFFFF, #B9C6EA);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 0.5px;
    }
    .nav-search-wrap {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 30px;
      padding: 3px 12px;
    }
    .nav-search-wrap input {
      background: transparent;
      border: none;
      box-shadow: none;
      margin: 0;
      color: #fff;
      font-size: 0.82rem;
      padding: 4px 6px;
      height: auto;
    }
    .nav-search-wrap input:focus {
      outline: none;
      box-shadow: none;
      background: transparent;
    }
    .trend-capsules {
      display: flex;
      align-items: center;
      gap: 6px;
      overflow-x: auto;
      white-space: nowrap;
    }
    .capsule-item {
      font-size: 0.74rem;
      background: rgba(123, 97, 255, 0.15);
      border: 1px solid rgba(123, 97, 255, 0.3);
      color: #D3DCF3;
      padding: 2px 9px;
      border-radius: 20px;
      transition: all 0.2s;
    }
    .capsule-item:hover {
      background: rgba(123, 97, 255, 0.35);
      color: #fff;
    }
    .nav-sub-bar {
      padding: 0.45rem 0;
    }
    .channel-menu {
      display: flex;
      list-style: none;
      margin: 0;
      align-items: center;
      gap: 1.5rem;
    }
    .channel-link {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 4px 0;
    }
    .channel-link.is-active, .channel-link:hover {
      color: #FFFFFF;
    }
    .channel-link.is-active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-cyan), var(--primary-purple));
      border-radius: 2px;
      box-shadow: 0 0 8px var(--accent-cyan);
    }
    .nav-cta-btn {
      background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
      color: #fff !important;
      font-size: 0.84rem;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 30px;
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 0 14px rgba(78, 128, 238, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .nav-cta-btn:hover {
      box-shadow: 0 0 20px rgba(123, 97, 255, 0.65);
      transform: translateY(-1px);
    }

    /* Glassmorphism Card System */
    .glass-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
    }
    .glass-panel:hover {
      border-color: var(--border-card-hover);
      box-shadow: 0 14px 35px -5px rgba(0, 0, 0, 0.65), 0 0 20px rgba(0, 229, 255, 0.15);
      transform: translateY(-2px);
    }

    /* Buttons */
    .btn-glow-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.96rem;
      color: #fff !important;
      background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
      border: 1px solid rgba(255, 255, 255, 0.3);
      box-shadow: var(--shadow-glow);
      transition: all 0.25s ease;
      cursor: pointer;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 30px rgba(123, 97, 255, 0.75);
      transform: translateY(-2px);
    }
    .btn-glass-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.96rem;
      color: #E2E8F0 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.18);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass-secondary:hover {
      background: rgba(255, 255, 255, 0.16);
      color: #FFFFFF !important;
      border-color: var(--accent-cyan);
      box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
    }

    /* Section Spacing & Typography */
    .section-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .section-wrap.tight {
      padding: 3.5rem 0;
    }
    .section-header {
      margin-bottom: 2.8rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: rgba(0, 229, 255, 0.1);
      border: 1px solid rgba(0, 229, 255, 0.3);
      border-radius: 20px;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--accent-cyan);
      text-transform: uppercase;
      letter-spacing: 0.8px;
      margin-bottom: 0.9rem;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 0.8rem;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.75;
    }

    /* Section 1: Hero */
    .hero-banner-immersive {
      padding: 4.8rem 0 3.8rem;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(123, 97, 255, 0.18);
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.22;
      background: linear-gradient(135deg, #FFFFFF 20%, #BCCAF3 70%, #7B61FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 1.2rem;
    }
    .hero-lead-text {
      font-size: 1.08rem;
      color: var(--text-body);
      line-height: 1.85;
      margin-bottom: 1.8rem;
    }
    .countdown-pill-bar {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      padding: 8px 18px;
      border-radius: 30px;
      background: rgba(123, 97, 255, 0.12);
      border: 1px solid rgba(123, 97, 255, 0.3);
      margin-bottom: 1.8rem;
    }
    .timer-unit {
      display: inline-flex;
      align-items: baseline;
      gap: 2px;
    }
    .timer-val {
      font-weight: 800;
      color: var(--accent-cyan);
      font-size: 1.15rem;
      font-family: monospace;
    }
    .timer-lbl {
      font-size: 0.72rem;
      color: var(--text-muted);
    }
    .hero-interactive-stage {
      padding: 1.8rem;
      border-radius: var(--radius-lg);
      background: rgba(13, 22, 48, 0.85);
      border: 1px solid rgba(123, 97, 255, 0.3);
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    .console-header-dots {
      display: flex;
      gap: 6px;
      margin-bottom: 1.2rem;
    }
    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #FF5F56; }
    .dot-yellow { background: #FFBD2E; }
    .dot-green { background: #27C93F; }

    /* Section 2: Metrics Bar */
    .metrics-bar-section {
      background: rgba(13, 22, 48, 0.65);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 2.2rem 0;
    }
    .metric-item {
      padding: 0.8rem 1rem;
      text-align: center;
      position: relative;
    }
    .metric-value {
      font-size: 2.3rem;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1;
      margin-bottom: 0.4rem;
      background: linear-gradient(180deg, #FFFFFF, var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-heading);
      margin-bottom: 0.2rem;
    }
    .metric-sub {
      font-size: 0.76rem;
      color: var(--text-muted);
    }

    /* Section 3: Feature Grid */
    .feature-card {
      padding: 2rem;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: rgba(123, 97, 255, 0.15);
      border: 1px solid rgba(123, 97, 255, 0.35);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--accent-cyan);
      margin-bottom: 1.3rem;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
    }
    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-body);
      flex-grow: 1;
      margin-bottom: 0;
    }

    /* Section 4: Use Cases Vertical Tabs */
    .scene-nav-pills {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .scene-pill-btn {
      background: rgba(16, 28, 58, 0.6);
      border: 1px solid rgba(123, 97, 255, 0.15);
      padding: 1.1rem 1.4rem;
      border-radius: var(--radius-md);
      color: var(--text-body);
      text-align: left;
      cursor: pointer;
      transition: all 0.25s;
    }
    .scene-pill-btn:hover, .scene-pill-btn.active {
      background: rgba(123, 97, 255, 0.22);
      border-color: var(--accent-cyan);
      color: #FFFFFF;
      box-shadow: 0 4px 20px rgba(0, 229, 255, 0.12);
    }
    .scene-pill-btn h4 {
      font-size: 1.05rem;
      margin-bottom: 4px;
    }
    .scene-pill-btn span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .scene-content-card {
      padding: 2.2rem;
      height: 100%;
    }
    .scene-tag-list {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin: 1.2rem 0;
    }
    .scene-tag {
      font-size: 0.78rem;
      padding: 3px 10px;
      border-radius: 4px;
      background: rgba(0, 229, 255, 0.12);
      color: var(--accent-cyan);
      border: 1px solid rgba(0, 229, 255, 0.25);
    }

    /* Section 5: Console Showcase */
    .mock-console-wrap {
      border-radius: var(--radius-lg);
      background: #090F24;
      border: 1px solid rgba(123, 97, 255, 0.3);
      overflow: hidden;
      box-shadow: 0 25px 60px rgba(0,0,0,0.7);
    }
    .mock-console-top {
      background: rgba(16, 28, 58, 0.95);
      padding: 0.8rem 1.4rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .mock-tab-group {
      display: flex;
      gap: 8px;
    }
    .mock-tab-tag {
      font-size: 0.8rem;
      padding: 3px 12px;
      border-radius: 4px;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-muted);
    }
    .mock-tab-tag.active {
      background: rgba(123, 97, 255, 0.3);
      color: #fff;
    }
    .mock-console-body {
      padding: 1.8rem;
    }
    .status-badge-inline {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.75rem;
      color: #27C93F;
      background: rgba(39, 201, 63, 0.1);
      padding: 2px 8px;
      border-radius: 12px;
    }
    .status-badge-inline .indicator {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #27C93F;
      box-shadow: 0 0 6px #27C93F;
    }

    /* Section 6: Case Study */
    .case-card {
      padding: 2rem;
      margin-bottom: 1.5rem;
    }
    .case-stat-pill {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--accent-cyan);
    }

    /* Section 7: Pricing Tiers */
    .pricing-card {
      padding: 2.2rem 1.8rem;
      position: relative;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .pricing-card.featured {
      border-color: var(--primary-purple);
      box-shadow: 0 0 35px rgba(123, 97, 255, 0.35);
      transform: scale(1.03);
      z-index: 2;
    }
    .pricing-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
      color: #fff;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 3px 14px;
      border-radius: 20px;
      letter-spacing: 0.5px;
      box-shadow: 0 0 12px rgba(123, 97, 255, 0.6);
    }
    .pricing-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: #FFFFFF;
      margin: 1rem 0 0.3rem;
    }
    .pricing-period {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 400;
    }
    .pricing-features-list {
      list-style: none;
      margin: 1.5rem 0 2rem;
      padding: 0;
      flex-grow: 1;
    }
    .pricing-features-list li {
      margin-bottom: 0.8rem;
      font-size: 0.9rem;
      color: var(--text-body);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .pricing-features-list li i {
      color: var(--accent-cyan);
      font-size: 0.85rem;
    }

    /* Section 8: Category Matrix */
    .category-entry-card {
      padding: 2.2rem;
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(16, 28, 58, 0.85), rgba(7, 11, 25, 0.9));
      border: 1px solid var(--border-card);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .category-entry-card::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 150px;
      height: 150px;
      background: radial-gradient(circle, rgba(123, 97, 255, 0.2) 0%, transparent 70%);
      pointer-events: none;
    }
    .cat-badge-count {
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 20px;
      background: rgba(123, 97, 255, 0.15);
      color: #D3DCF3;
      align-self: flex-start;
      margin-bottom: 1rem;
      border: 1px solid rgba(123, 97, 255, 0.3);
    }
    .category-entry-card h3 {
      font-size: 1.45rem;
      margin-bottom: 0.8rem;
    }
    .category-entry-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }

    /* Section 9: Reviews Wall */
    .review-card {
      padding: 1.8rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: var(--accent-amber);
      font-size: 0.85rem;
      margin-bottom: 0.9rem;
      display: flex;
      gap: 3px;
    }
    .review-text {
      font-size: 0.92rem;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 1.2rem;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 1rem;
    }
    .author-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 0.85rem;
      border: 1px solid rgba(255, 255, 255, 0.3);
    }
    .author-info h5 {
      font-size: 0.88rem;
      margin-bottom: 2px;
    }
    .author-info span {
      font-size: 0.74rem;
      color: var(--text-muted);
    }

    /* Section 10: Quote Endorsement */
    .endorsement-panel {
      padding: 3.5rem 2.8rem;
      position: relative;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, rgba(16, 28, 58, 0.9), rgba(13, 22, 48, 0.7));
      border: 1px solid rgba(123, 97, 255, 0.28);
    }
    .quote-mark {
      position: absolute;
      top: 1.5rem;
      left: 2rem;
      font-size: 4.5rem;
      line-height: 1;
      color: rgba(123, 97, 255, 0.15);
      font-family: Georgia, serif;
    }
    .endorsement-text {
      font-size: 1.15rem;
      line-height: 1.85;
      color: #E2E8F0;
      position: relative;
      z-index: 1;
      margin-bottom: 1.5rem;
    }

    /* Section 11: News & Feed */
    .news-featured-card {
      padding: 2.2rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border-radius: var(--radius-md);
      background: linear-gradient(160deg, rgba(20, 35, 75, 0.75), rgba(7, 11, 25, 0.85));
    }
    .news-list-item {
      padding: 1.2rem 1.4rem;
      background: rgba(16, 28, 58, 0.5);
      border: 1px solid rgba(123, 97, 255, 0.15);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      transition: all 0.25s;
    }
    .news-list-item:hover {
      background: rgba(16, 28, 58, 0.8);
      border-color: var(--accent-cyan);
      transform: translateX(4px);
    }
    .news-item-title {
      font-size: 0.98rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 0.4rem;
    }
    .news-item-meta {
      font-size: 0.78rem;
      color: var(--text-muted);
      display: flex;
      gap: 14px;
    }

    /* Section 12: Accordion FAQ */
    .accordion-glass {
      background: transparent;
      border: none;
      list-style: none;
      margin: 0;
    }
    .accordion-item-glass {
      background: rgba(16, 28, 58, 0.6);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.2s;
    }
    .accordion-title-glass {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.2rem 1.6rem;
      color: #FFFFFF;
      font-size: 1.02rem;
      font-weight: 600;
      cursor: pointer;
      user-select: none;
    }
    .accordion-title-glass i {
      color: var(--accent-cyan);
      transition: transform 0.3s;
    }
    .accordion-title-glass.is-active i {
      transform: rotate(180deg);
    }
    .accordion-content-glass {
      display: none;
      padding: 0 1.6rem 1.4rem;
      font-size: 0.93rem;
      color: var(--text-body);
      line-height: 1.75;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 1rem;
    }
    .accordion-content-glass.is-open {
      display: block;
    }

    /* Section 13: Final CTA */
    .cta-stage-section {
      padding: 5.5rem 0 6rem;
      position: relative;
    }
    .cta-stage-box {
      border-radius: var(--radius-lg);
      padding: 4.5rem 2.5rem;
      text-align: center;
      background: radial-gradient(circle at 50% 0%, rgba(123, 97, 255, 0.28) 0%, rgba(7, 11, 25, 0.95) 75%);
      border: 1px solid rgba(123, 97, 255, 0.38);
      box-shadow: 0 0 50px rgba(78, 128, 238, 0.25);
    }

    /* Footer Styles */
    .portal-footer {
      background: #050813;
      border-top: 1px solid rgba(123, 97, 255, 0.2);
      padding: 4.5rem 0 2rem;
    }
    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.3rem;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 28px;
      height: 2px;
      background: var(--accent-cyan);
    }
    .footer-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-list li {
      margin-bottom: 0.65rem;
    }
    .footer-list a {
      color: var(--text-muted);
      font-size: 0.88rem;
    }
    .footer-list a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }
    .footer-status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(39, 201, 63, 0.1);
      border: 1px solid rgba(39, 201, 63, 0.25);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.78rem;
      color: #27C93F;
      margin-top: 0.8rem;
    }
    .footer-bottom-bar {
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* Responsive adjustments */
    @media screen and (max-width: 1024px) {
      .hero-h1 { font-size: 2.3rem; }
      .section-title { font-size: 1.8rem; }
      .pricing-card.featured { transform: scale(1); }
    }
    @media screen and (max-width: 768px) {
      .nav-top-bar .trend-capsules { display: none; }
      .channel-menu { gap: 0.85rem; overflow-x: auto; padding-bottom: 4px; }
      .hero-h1 { font-size: 1.9rem; }
      .section-wrap { padding: 3.5rem 0; }
      .metric-item { margin-bottom: 1.2rem; }
      .cta-stage-box { padding: 3rem 1.5rem; }
    }

/* roulang page: category1 */
:root {
        --bg-base: #070B19;
        --bg-surface: #0D1630;
        --bg-card: rgba(16, 28, 58, 0.72);
        --bg-card-hover: rgba(23, 38, 77, 0.88);
        --primary-purple: #7B61FF;
        --primary-blue: #4E80EE;
        --accent-cyan: #00E5FF;
        --accent-amber: #F5A623;
        --text-heading: #FFFFFF;
        --text-body: #C5D1E8;
        --text-muted: #7A8BA6;
        --border-card: rgba(123, 97, 255, 0.22);
        --border-card-hover: rgba(0, 229, 255, 0.45);
        --shadow-glow: 0 0 25px rgba(78, 128, 238, 0.35);
        --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * {
        box-sizing: border-box;
    }
    body {
        font-family: var(--font-stack);
        background-color: var(--bg-base);
        background-image: 
            radial-gradient(circle at 15% 15%, rgba(123, 97, 255, 0.12) 0%, transparent 40%),
            radial-gradient(circle at 85% 65%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
            linear-gradient(180deg, #070B19 0%, #0D1630 100%);
        color: var(--text-body);
        line-height: 1.7;
        font-size: 15px;
        min-height: 100vh;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
        margin: 0;
        padding: 0;
    }
    a {
        color: var(--accent-cyan);
        text-decoration: none;
        transition: all 0.25s ease;
    }
    a:hover, a:focus {
        color: #7BE9FF;
        text-decoration: none;
    }
    h1, h2, h3, h4, h5, h6 {
        color: var(--text-heading);
        font-weight: 700;
        margin-top: 0;
        line-height: 1.35;
    }
    .portal-nav-wrapper {
        position: sticky;
        top: 0;
        z-index: 1000;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        background: rgba(7, 11, 25, 0.88);
        border-bottom: 1px solid rgba(123, 97, 255, 0.2);
    }
    .nav-top-bar {
        padding: 0.55rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .brand-box {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .brand-icon-shield {
        width: 34px;
        height: 34px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 16px;
        box-shadow: 0 0 14px rgba(123, 97, 255, 0.5);
    }
    .brand-title {
        font-size: 1.28rem;
        font-weight: 800;
        background: linear-gradient(90deg, #FFFFFF, #B9C6EA);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        letter-spacing: 0.5px;
    }
    .nav-search-wrap {
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 30px;
        padding: 3px 12px;
    }
    .nav-search-wrap input {
        background: transparent;
        border: none;
        box-shadow: none;
        margin: 0;
        color: #fff;
        font-size: 0.82rem;
        padding: 4px 6px;
        height: auto;
    }
    .nav-search-wrap input:focus {
        outline: none;
        box-shadow: none;
        background: transparent;
    }
    .trend-capsules {
        display: flex;
        gap: 8px;
        align-items: center;
    }
    .capsule-item {
        font-size: 0.74rem;
        background: rgba(123, 97, 255, 0.15);
        border: 1px solid rgba(123, 97, 255, 0.3);
        color: #D3DCF3;
        padding: 2px 9px;
        border-radius: 20px;
        transition: all 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .capsule-item:hover {
        background: rgba(123, 97, 255, 0.35);
        color: #fff;
    }
    .nav-sub-bar {
        padding: 0.45rem 0;
    }
    .channel-menu {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        align-items: center;
        gap: 1.5rem;
    }
    .channel-link {
        color: #B2C3E5;
        font-size: 0.9rem;
        font-weight: 500;
        padding: 6px 2px;
        position: relative;
    }
    .channel-link:hover {
        color: #FFFFFF;
    }
    .channel-link.is-active {
        color: #FFFFFF;
        font-weight: 700;
    }
    .channel-link.is-active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, var(--accent-cyan), var(--primary-purple));
        box-shadow: 0 0 8px var(--accent-cyan);
    }
    .nav-cta-btn {
        background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
        color: #fff !important;
        font-size: 0.84rem;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 30px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 0 0 14px rgba(78, 128, 238, 0.4);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .nav-cta-btn:hover {
        box-shadow: 0 0 20px rgba(123, 97, 255, 0.65);
        transform: translateY(-1px);
    }
    .glass-panel {
        background: var(--bg-card);
        border: 1px solid var(--border-card);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-card);
        transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        position: relative;
    }
    .glass-panel:hover {
        border-color: var(--border-card-hover);
        background: var(--bg-card-hover);
        box-shadow: 0 12px 35px -5px rgba(0, 229, 255, 0.2);
    }
    .btn-glow-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 0.92rem;
        color: #fff !important;
        background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
        border: 1px solid rgba(255, 255, 255, 0.3);
        box-shadow: var(--shadow-glow);
        transition: all 0.25s ease;
        cursor: pointer;
    }
    .btn-glow-primary:hover {
        box-shadow: 0 0 28px rgba(123, 97, 255, 0.75);
        transform: translateY(-2px);
    }
    .section-wrap {
        padding: 4.5rem 0;
        position: relative;
    }
    .section-wrap.tight {
        padding: 3rem 0;
    }
    .section-header {
        margin-bottom: 2.5rem;
    }
    .section-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.76rem;
        font-weight: 700;
        letter-spacing: 1px;
        color: var(--accent-cyan);
        background: rgba(0, 229, 255, 0.12);
        border: 1px solid rgba(0, 229, 255, 0.3);
        padding: 4px 12px;
        border-radius: 20px;
        margin-bottom: 0.8rem;
        text-transform: uppercase;
    }
    .section-title {
        font-size: 2rem;
        letter-spacing: -0.5px;
        margin-bottom: 0.8rem;
    }
    .section-desc {
        color: var(--text-muted);
        font-size: 0.98rem;
        max-width: 680px;
        margin-bottom: 0;
    }

    /* Category Specific Components */
    .filter-bar-box {
        padding: 1.5rem;
        margin-top: 1.5rem;
        border-radius: var(--radius-md);
    }
    .filter-group-wrap {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        align-items: center;
    }
    .filter-label {
        font-size: 0.85rem;
        color: var(--text-muted);
        font-weight: 600;
        margin-right: 6px;
    }
    .filter-pill {
        font-size: 0.8rem;
        padding: 4px 14px;
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.12);
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-body);
        cursor: pointer;
        transition: all 0.2s;
    }
    .filter-pill:hover, .filter-pill.is-active {
        background: rgba(123, 97, 255, 0.3);
        border-color: var(--primary-purple);
        color: #fff;
    }

    /* Grid Cards */
    .matrix-card {
        padding: 1.8rem;
        height: 100%;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .card-top-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 1.2rem;
    }
    .card-tech-badge {
        font-size: 0.72rem;
        padding: 2px 8px;
        border-radius: 4px;
        background: rgba(0, 229, 255, 0.1);
        color: var(--accent-cyan);
        border: 1px solid rgba(0, 229, 255, 0.25);
    }
    .matrix-card-title {
        font-size: 1.15rem;
        margin-bottom: 0.7rem;
        line-height: 1.4;
    }
    .matrix-card-summary {
        font-size: 0.86rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 1.4rem;
        flex-grow: 1;
    }
    .matrix-card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding-top: 1rem;
        font-size: 0.78rem;
        color: var(--text-muted);
    }

    /* Rank Section */
    .rank-card {
        padding: 1.6rem;
        position: relative;
        overflow: hidden;
    }
    .rank-number {
        position: absolute;
        top: 10px;
        right: 15px;
        font-size: 3rem;
        font-weight: 900;
        color: rgba(255, 255, 255, 0.04);
        line-height: 1;
        pointer-events: none;
    }
    .rank-header {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 1rem;
    }
    .rank-badge-num {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 800;
        font-size: 0.95rem;
    }
    .heat-bar-wrap {
        background: rgba(255, 255, 255, 0.08);
        border-radius: 10px;
        height: 6px;
        margin: 1rem 0 0.5rem 0;
        overflow: hidden;
    }
    .heat-bar-val {
        height: 100%;
        background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan));
        border-radius: 10px;
    }

    /* Deep Guide */
    .spec-item {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 1.4rem;
        padding-bottom: 1.2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .spec-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: rgba(123, 97, 255, 0.15);
        border: 1px solid rgba(123, 97, 255, 0.3);
        color: var(--accent-cyan);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    /* Tag Cloud */
    .tag-cloud-wrap {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }
    .tag-chip {
        padding: 8px 18px;
        border-radius: 30px;
        background: rgba(16, 28, 58, 0.8);
        border: 1px solid rgba(123, 97, 255, 0.25);
        color: var(--text-body);
        font-size: 0.88rem;
        transition: all 0.25s;
        cursor: pointer;
    }
    .tag-chip:hover {
        background: rgba(123, 97, 255, 0.35);
        border-color: var(--accent-cyan);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(0, 229, 255, 0.2);
    }

    /* FAQ 2x2 Grid */
    .faq-grid-card {
        padding: 1.8rem;
        height: 100%;
    }
    .faq-q-title {
        font-size: 1.05rem;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 0.9rem;
        color: #fff;
    }
    .faq-q-title i {
        color: var(--accent-cyan);
    }
    .faq-a-text {
        color: var(--text-muted);
        font-size: 0.88rem;
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* Subscribe Banner */
    .sub-banner-box {
        padding: 2.8rem 2rem;
        border-radius: var(--radius-lg);
        background: linear-gradient(135deg, rgba(16, 28, 58, 0.9), rgba(23, 38, 77, 0.95));
        border: 1px solid rgba(123, 97, 255, 0.35);
        box-shadow: 0 0 35px rgba(78, 128, 238, 0.25);
    }
    .sub-input-wrap {
        display: flex;
        background: rgba(7, 11, 25, 0.8);
        border: 1px solid rgba(123, 97, 255, 0.4);
        border-radius: 40px;
        padding: 4px;
    }
    .sub-input-wrap input {
        background: transparent;
        border: none;
        box-shadow: none;
        color: #fff;
        padding: 10px 18px;
        margin: 0;
        font-size: 0.9rem;
    }
    .sub-input-wrap input:focus {
        background: transparent;
        outline: none;
        box-shadow: none;
    }

    /* Footer */
    .portal-footer {
        background: #050813;
        border-top: 1px solid rgba(123, 97, 255, 0.2);
        padding: 4.5rem 0 2rem 0;
        margin-top: 5rem;
    }
    .footer-column-title {
        font-size: 0.95rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 1.2rem;
        letter-spacing: 0.5px;
    }
    .footer-link-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-link-list li {
        margin-bottom: 0.6rem;
    }
    .footer-link-list a {
        color: var(--text-muted);
        font-size: 0.84rem;
    }
    .footer-link-list a:hover {
        color: var(--accent-cyan);
    }
    .footer-status-pill {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(39, 201, 63, 0.1);
        border: 1px solid rgba(39, 201, 63, 0.3);
        padding: 4px 12px;
        border-radius: 20px;
        font-size: 0.76rem;
        color: #A3E7AC;
    }
    .footer-bottom-bar {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        margin-top: 3rem;
        padding-top: 1.8rem;
        text-align: center;
        font-size: 0.8rem;
        color: var(--text-muted);
    }

    @media screen and (max-width: 768px) {
        .section-wrap {
            padding: 3rem 0;
        }
        .section-title {
            font-size: 1.6rem;
        }
        .channel-menu {
            overflow-x: auto;
            white-space: nowrap;
            padding-bottom: 6px;
            gap: 1rem;
        }
        .show-for-small-only-hide {
            display: none !important;
        }
        .sub-input-wrap {
            flex-direction: column;
            border-radius: var(--radius-md);
            background: transparent;
            border: none;
            padding: 0;
            gap: 10px;
        }
        .sub-input-wrap input {
            background: rgba(7, 11, 25, 0.8);
            border: 1px solid rgba(123, 97, 255, 0.4);
            border-radius: 30px;
        }
        .sub-input-wrap button {
            width: 100%;
        }
    }

/* roulang page: category2 */
:root {
        --bg-base: #070B19;
        --bg-surface: #0D1630;
        --bg-card: rgba(16, 28, 58, 0.72);
        --bg-card-hover: rgba(23, 38, 77, 0.88);
        --primary-purple: #7B61FF;
        --primary-blue: #4E80EE;
        --accent-cyan: #00E5FF;
        --accent-amber: #F5A623;
        --text-heading: #FFFFFF;
        --text-body: #C5D1E8;
        --text-muted: #7A8BA6;
        --border-card: rgba(123, 97, 255, 0.22);
        --border-card-hover: rgba(0, 229, 255, 0.45);
        --shadow-glow: 0 0 25px rgba(78, 128, 238, 0.35);
        --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    * {
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-stack);
        background-color: var(--bg-base);
        background-image: 
            radial-gradient(circle at 15% 15%, rgba(123, 97, 255, 0.12) 0%, transparent 40%),
            radial-gradient(circle at 85% 65%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
            linear-gradient(180deg, #070B19 0%, #0D1630 100%);
        color: var(--text-body);
        line-height: 1.7;
        font-size: 15px;
        min-height: 100vh;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
        margin: 0;
        padding: 0;
    }

    a {
        color: var(--accent-cyan);
        text-decoration: none;
        transition: all 0.25s ease;
    }
    a:hover, a:focus {
        color: #7BE9FF;
        text-decoration: none;
    }

    /* Top Dual-Bar Navigation */
    .portal-nav-wrapper {
        position: sticky;
        top: 0;
        z-index: 1000;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        background: rgba(7, 11, 25, 0.88);
        border-bottom: 1px solid rgba(123, 97, 255, 0.2);
    }
    .nav-top-bar {
        padding: 0.55rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .brand-box {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .brand-icon-shield {
        width: 34px;
        height: 34px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 16px;
        box-shadow: 0 0 14px rgba(123, 97, 255, 0.5);
    }
    .brand-title {
        font-size: 1.28rem;
        font-weight: 800;
        background: linear-gradient(90deg, #FFFFFF, #B9C6EA);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        letter-spacing: 0.5px;
    }
    .nav-search-wrap {
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 30px;
        padding: 3px 12px;
    }
    .nav-search-wrap input {
        background: transparent;
        border: none;
        box-shadow: none;
        margin: 0;
        color: #fff;
        font-size: 0.82rem;
        padding: 4px 6px;
        height: auto;
    }
    .nav-search-wrap input:focus {
        outline: none;
        box-shadow: none;
        background: transparent;
    }
    .capsule-item {
        font-size: 0.74rem;
        background: rgba(123, 97, 255, 0.15);
        border: 1px solid rgba(123, 97, 255, 0.3);
        color: #D3DCF3;
        padding: 2px 9px;
        border-radius: 20px;
        transition: all 0.2s;
    }
    .capsule-item:hover {
        background: rgba(123, 97, 255, 0.35);
        color: #fff;
    }
    .nav-sub-bar {
        padding: 0.45rem 0;
    }
    .channel-menu {
        display: flex;
        list-style: none;
        margin: 0;
        align-items: center;
        gap: 1.5rem;
    }
    .channel-link {
        font-size: 0.9rem;
        font-weight: 500;
        color: #A9B7D1;
        position: relative;
        padding: 4px 0;
        transition: color 0.2s ease;
    }
    .channel-link:hover,
    .channel-link.is-active {
        color: #FFFFFF;
    }
    .channel-link.is-active::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, var(--accent-cyan), var(--primary-purple));
        border-radius: 2px;
        box-shadow: 0 0 8px var(--accent-cyan);
    }
    .nav-cta-btn {
        background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
        color: #fff !important;
        font-size: 0.84rem;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 30px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 0 0 14px rgba(78, 128, 238, 0.4);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .nav-cta-btn:hover {
        box-shadow: 0 0 20px rgba(123, 97, 255, 0.65);
        transform: translateY(-1px);
    }

    /* Glassmorphism Card System */
    .glass-panel {
        background: var(--bg-card);
        border: 1px solid var(--border-card);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-card);
        transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        position: relative;
    }
    .glass-panel:hover {
        background: var(--bg-card-hover);
        border-color: var(--border-card-hover);
        box-shadow: 0 14px 34px -4px rgba(0, 0, 0, 0.65), 0 0 20px rgba(123, 97, 255, 0.25);
    }

    /* Buttons */
    .btn-glow-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 0.92rem;
        color: #fff !important;
        background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
        border: 1px solid rgba(255, 255, 255, 0.3);
        box-shadow: var(--shadow-glow);
        transition: all 0.25s ease;
        cursor: pointer;
    }
    .btn-glow-primary:hover {
        box-shadow: 0 0 30px rgba(123, 97, 255, 0.75);
        transform: translateY(-2px);
    }

    /* Section Spacing & Headings */
    .cat-section-wrap {
        padding: 3rem 0;
        position: relative;
    }
    .cat-section-header {
        margin-bottom: 2rem;
    }
    .cat-section-title {
        font-size: 1.55rem;
        font-weight: 700;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 0.5rem;
    }
    .cat-section-title i {
        color: var(--accent-cyan);
        font-size: 1.3rem;
    }
    .cat-section-subtitle {
        color: var(--text-muted);
        font-size: 0.92rem;
        margin: 0;
    }

    /* Section 1: Header & Filter Bar */
    .cat-header-box {
        padding: 2.2rem 2.5rem;
        margin-top: 2rem;
        margin-bottom: 1.5rem;
    }
    .cat-main-h1 {
        font-size: 1.95rem;
        font-weight: 800;
        color: #FFFFFF;
        line-height: 1.35;
        margin-bottom: 0.6rem;
        background: linear-gradient(90deg, #FFFFFF, #B0C4DE, #A7BFFF);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .cat-header-desc {
        color: var(--text-body);
        font-size: 0.95rem;
        max-width: 820px;
        margin-bottom: 1.5rem;
        line-height: 1.7;
    }
    .filter-group-wrap {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .filter-label {
        font-size: 0.85rem;
        color: var(--accent-cyan);
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .filter-tag-pill {
        font-size: 0.82rem;
        padding: 4px 14px;
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-body);
        border: 1px solid rgba(255, 255, 255, 0.12);
        cursor: pointer;
        transition: all 0.2s;
    }
    .filter-tag-pill:hover,
    .filter-tag-pill.active {
        background: rgba(123, 97, 255, 0.25);
        border-color: var(--primary-purple);
        color: #FFFFFF;
        box-shadow: 0 0 10px rgba(123, 97, 255, 0.35);
    }

    /* Section 2: Core Resource Grid Cards */
    .resource-card {
        padding: 1.4rem;
        display: flex;
        flex-direction: column;
        height: 100%;
    }
    .resource-cover {
        height: 140px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, rgba(78, 128, 238, 0.2), rgba(123, 97, 255, 0.2));
        border: 1px solid rgba(255, 255, 255, 0.08);
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.1rem;
    }
    .resource-cover i {
        font-size: 2.5rem;
        color: rgba(255, 255, 255, 0.35);
        transition: all 0.3s ease;
    }
    .resource-card:hover .resource-cover i {
        color: var(--accent-cyan);
        transform: scale(1.1);
    }
    .resource-badge {
        position: absolute;
        top: 10px;
        left: 10px;
        font-size: 0.72rem;
        padding: 2px 8px;
        border-radius: 4px;
        background: rgba(7, 11, 25, 0.75);
        border: 1px solid rgba(0, 229, 255, 0.4);
        color: var(--accent-cyan);
        font-weight: 600;
    }
    .resource-title {
        font-size: 1.05rem;
        font-weight: 700;
        color: #FFFFFF;
        line-height: 1.45;
        margin-bottom: 0.6rem;
    }
    .resource-title a {
        color: #FFFFFF;
    }
    .resource-title a:hover {
        color: var(--accent-cyan);
    }
    .resource-excerpt {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 1.2rem;
        flex-grow: 1;
    }
    .resource-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.76rem;
        color: var(--text-muted);
        padding-top: 0.8rem;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* Section 3: Ranking Top 4 */
    .rank-card {
        padding: 1.25rem 1.4rem;
        position: relative;
        overflow: hidden;
        height: 100%;
    }
    .rank-number {
        font-size: 2.2rem;
        font-weight: 900;
        color: rgba(123, 97, 255, 0.25);
        line-height: 1;
        margin-bottom: 0.4rem;
    }
    .rank-card.top1 .rank-number {
        color: rgba(0, 229, 255, 0.4);
    }
    .rank-title {
        font-size: 0.98rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 0.5rem;
        line-height: 1.4;
    }
    .rank-desc {
        font-size: 0.82rem;
        color: var(--text-muted);
        margin-bottom: 0.9rem;
        line-height: 1.5;
    }
    .rank-heat-bar {
        width: 100%;
        height: 5px;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 10px;
        overflow: hidden;
        margin-bottom: 0.5rem;
    }
    .rank-heat-fill {
        height: 100%;
        background: linear-gradient(90deg, var(--accent-cyan), var(--primary-purple));
        border-radius: 10px;
    }
    .rank-status {
        display: flex;
        justify-content: space-between;
        font-size: 0.75rem;
        color: var(--text-muted);
    }

    /* Section 4: Deep Reading Guides */
    .guide-left-box {
        padding: 2.2rem;
        height: 100%;
    }
    .guide-article-item {
        margin-bottom: 1.5rem;
        padding-bottom: 1.2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .guide-article-item:last-child {
        margin-bottom: 0;
        padding-bottom: 0;
        border-bottom: none;
    }
    .guide-title {
        font-size: 1.05rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 0.4rem;
    }
    .guide-text {
        font-size: 0.86rem;
        color: var(--text-body);
        line-height: 1.65;
    }
    .guide-right-box {
        padding: 2.2rem;
        height: 100%;
    }
    .spec-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .spec-item {
        display: flex;
        gap: 12px;
        margin-bottom: 1.2rem;
        padding-bottom: 1.1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .spec-item:last-child {
        margin-bottom: 0;
        padding-bottom: 0;
        border-bottom: none;
    }
    .spec-icon {
        width: 32px;
        height: 32px;
        border-radius: 6px;
        background: rgba(0, 229, 255, 0.12);
        color: var(--accent-cyan);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        font-size: 0.85rem;
    }
    .spec-name {
        font-size: 0.92rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 2px;
    }
    .spec-desc {
        font-size: 0.8rem;
        color: var(--text-muted);
        line-height: 1.5;
    }

    /* Section 5: Tag Cloud Matrix */
    .tag-cloud-box {
        padding: 2.2rem;
    }
    .tag-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }
    .topic-tag-item {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(123, 97, 255, 0.22);
        padding: 8px 18px;
        border-radius: 30px;
        font-size: 0.86rem;
        color: var(--text-body);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: all 0.25s ease;
    }
    .topic-tag-item i {
        color: var(--accent-cyan);
        font-size: 0.8rem;
    }
    .topic-tag-item:hover {
        background: rgba(123, 97, 255, 0.2);
        border-color: var(--accent-cyan);
        color: #FFFFFF;
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(0, 229, 255, 0.2);
    }
    .topic-tag-item .tag-count {
        font-size: 0.75rem;
        background: rgba(0, 0, 0, 0.3);
        padding: 2px 7px;
        border-radius: 10px;
        color: var(--text-muted);
    }

    /* Section 6: FAQ 2x2 Grid */
    .faq-grid-card {
        padding: 1.6rem;
        height: 100%;
    }
    .faq-q-title {
        font-size: 1rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 0.65rem;
        display: flex;
        align-items: flex-start;
        gap: 10px;
    }
    .faq-q-icon {
        color: var(--primary-purple);
        font-size: 1.1rem;
        margin-top: 2px;
    }
    .faq-a-text {
        font-size: 0.86rem;
        color: var(--text-body);
        line-height: 1.65;
        padding-left: 26px;
    }

    /* Section 7: Subscription Strip */
    .sub-strip-panel {
        padding: 2.5rem;
        background: linear-gradient(135deg, rgba(16, 28, 58, 0.85), rgba(23, 38, 77, 0.95));
        border: 1px solid rgba(0, 229, 255, 0.3);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(123, 97, 255, 0.15);
    }
    .sub-input-box {
        display: flex;
        align-items: center;
        background: rgba(7, 11, 25, 0.7);
        border: 1px solid rgba(123, 97, 255, 0.35);
        border-radius: 30px;
        padding: 4px 6px 4px 16px;
    }
    .sub-input-box input {
        background: transparent;
        border: none;
        box-shadow: none;
        color: #FFFFFF;
        font-size: 0.88rem;
        margin: 0;
        padding: 8px;
        height: auto;
    }
    .sub-input-box input:focus {
        outline: none;
        box-shadow: none;
        background: transparent;
    }

    /* Portal Footer */
    .portal-footer {
        background: #050813;
        border-top: 1px solid rgba(123, 97, 255, 0.18);
        padding: 4rem 0 2rem 0;
        margin-top: 4rem;
    }
    .footer-column-title {
        font-size: 0.98rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 1.1rem;
        position: relative;
        padding-bottom: 6px;
    }
    .footer-column-title::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 24px;
        height: 2px;
        background: var(--accent-cyan);
    }
    .footer-link-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-link-list li {
        margin-bottom: 0.55rem;
    }
    .footer-link-list a {
        font-size: 0.84rem;
        color: var(--text-muted);
        transition: all 0.2s;
    }
    .footer-link-list a:hover {
        color: #FFFFFF;
        padding-left: 4px;
    }
    .footer-status-pill {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(39, 201, 63, 0.1);
        border: 1px solid rgba(39, 201, 63, 0.25);
        padding: 4px 12px;
        border-radius: 20px;
        font-size: 0.78rem;
        color: #55E26E;
    }
    .footer-bottom-bar {
        margin-top: 3rem;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 15px;
        font-size: 0.8rem;
        color: var(--text-muted);
    }

    @media screen and (max-width: 768px) {
        .cat-header-box {
            padding: 1.5rem 1.2rem;
        }
        .cat-main-h1 {
            font-size: 1.5rem;
        }
        .channel-menu {
            gap: 0.8rem;
            overflow-x: auto;
            white-space: nowrap;
            padding-bottom: 6px;
        }
        .sub-input-box {
            flex-direction: column;
            border-radius: 12px;
            padding: 8px;
        }
        .sub-input-box input {
            width: 100%;
            margin-bottom: 8px;
        }
        .sub-input-box button {
            width: 100%;
        }
        .show-for-small-only-hide {
            display: none !important;
        }
    }