/* roulang page: index */
:root {
      --bg-main: #060913;
      --bg-card: rgba(14, 22, 45, 0.65);
      --bg-card-hover: rgba(22, 34, 68, 0.85);
      --border-color: rgba(64, 128, 255, 0.18);
      --border-glow: rgba(0, 229, 255, 0.4);
      --primary-cyan: #00f2fe;
      --primary-blue: #4facfe;
      --accent-purple: #7f00ff;
      --accent-pink: #e100ff;
      --accent-green: #00ff87;
      --text-main: #f0f6fc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --glow-blue: 0 0 25px rgba(0, 242, 254, 0.35);
      --glow-btn: 0 0 20px rgba(79, 172, 254, 0.5);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
      overflow-x: hidden;
      line-height: 1.6;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    /* Ambient Background Glow */
    .ambient-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      pointer-events: none;
      z-index: -1;
      background: 
        radial-gradient(circle at 15% 15%, rgba(0, 242, 254, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(127, 0, 255, 0.1) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(79, 172, 254, 0.06) 0%, transparent 50%),
        #060913;
    }

    /* Glassmorphism Classes */
    .glass-panel {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    }

    .glass-panel:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      box-shadow: 0 12px 40px rgba(0, 242, 254, 0.15);
      transform: translateY(-3px);
    }

    /* Gradient Text & Neon */
    .text-gradient {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #9b51e0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    
    .text-gradient-alt {
      background: linear-gradient(135deg, #00ff87 0%, #60efff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* Glowing Action Buttons */
    .btn-glow-primary {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
      color: #030a1a !important;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: 50px;
      border: none;
      box-shadow: var(--glow-btn);
      position: relative;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s ease;
    }

    .btn-glow-primary:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 0 30px rgba(0, 242, 254, 0.8);
      color: #000 !important;
    }

    .btn-glow-outline {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(0, 242, 254, 0.4);
      color: var(--primary-cyan) !important;
      font-weight: 600;
      padding: 11px 26px;
      border-radius: 50px;
      backdrop-filter: blur(10px);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s ease;
    }

    .btn-glow-outline:hover {
      background: rgba(0, 242, 254, 0.15);
      border-color: var(--primary-cyan);
      box-shadow: var(--glow-blue);
      color: #fff !important;
      transform: translateY(-2px);
    }

    /* Navigation */
    .navbar {
      background: rgba(6, 9, 19, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(64, 128, 255, 0.12);
      padding: 16px 0;
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .navbar-brand {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .navbar-brand i {
      font-size: 1.4rem;
      color: var(--primary-cyan);
      text-shadow: 0 0 12px var(--primary-cyan);
    }

    .nav-link {
      color: var(--text-muted) !important;
      font-weight: 500;
      padding: 8px 18px !important;
      border-radius: 8px;
      transition: all 0.25s ease;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary-cyan) !important;
      background: rgba(0, 242, 254, 0.08);
    }

    /* Section Base */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      margin-bottom: 45px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: 30px;
      font-size: 0.82rem;
      color: var(--primary-cyan);
      font-weight: 600;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 680px;
      margin: 0 auto;
    }

    /* Hero Section (Before / After Comparison) */
    .hero-section {
      padding: 80px 0 60px;
      min-height: calc(100vh - 80px);
      display: flex;
      align-items: center;
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-lead {
      color: var(--text-muted);
      font-size: 1.125rem;
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .comparison-box {
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      height: 100%;
    }

    .comparison-before {
      background: rgba(239, 68, 68, 0.05);
      border: 1px dashed rgba(239, 68, 68, 0.3);
    }

    .comparison-after {
      background: rgba(0, 242, 254, 0.06);
      border: 1px solid var(--border-glow);
      box-shadow: 0 0 35px rgba(0, 242, 254, 0.15);
    }

    /* Catalog Card */
    .catalog-item {
      padding: 24px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .catalog-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 16px;
      background: linear-gradient(135deg, rgba(0,242,254,0.15) 0%, rgba(127,0,255,0.15) 100%);
      color: var(--primary-cyan);
      border: 1px solid var(--border-color);
    }

    /* News & Stream Track */
    .stream-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      padding: 20px;
      position: relative;
    }

    .stream-badge {
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 600;
    }

    /* Index Tag Wall */
    .tag-bubble {
      display: inline-block;
      padding: 8px 16px;
      border-radius: 50px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      margin: 5px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: all 0.25s ease;
    }

    .tag-bubble:hover {
      background: var(--primary-cyan);
      color: #040814;
      border-color: var(--primary-cyan);
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.5);
      transform: translateY(-2px);
    }

    /* Testimonial / Feedback */
    .feedback-bubble {
      padding: 24px;
      position: relative;
    }
    
    .avatar-mock {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
    }

    /* Footer */
    footer {
      background: #03050c;
      border-top: 1px solid rgba(64, 128, 255, 0.12);
      padding: 60px 0 30px;
      color: var(--text-dim);
    }

    /* Mobile Responsive Custom */
    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-title { font-size: 1.8rem; }
    }
    @media (max-width: 767px) {
      .hero-h1 { font-size: 1.85rem; }
      section { padding: 50px 0; }
    }

/* roulang page: category1 */
:root {
      --bg-main: #060913;
      --bg-card: rgba(14, 22, 45, 0.65);
      --bg-card-hover: rgba(22, 34, 68, 0.85);
      --border-color: rgba(64, 128, 255, 0.18);
      --border-glow: rgba(0, 229, 255, 0.4);
      --primary-cyan: #00f2fe;
      --primary-blue: #4facfe;
      --accent-purple: #7f00ff;
      --accent-pink: #e100ff;
      --accent-green: #00ff87;
      --text-main: #f0f6fc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --glow-blue: 0 0 25px rgba(0, 242, 254, 0.35);
      --glow-btn: 0 0 20px rgba(79, 172, 254, 0.5);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
      overflow-x: hidden;
      line-height: 1.6;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    .text-gradient {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #9b51e0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-gradient-alt {
      background: linear-gradient(135deg, #00ff87 0%, #60efff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .btn-glow-primary {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
      color: #030a1a !important;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: 50px;
      border: none;
      box-shadow: var(--glow-btn);
      position: relative;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s ease;
    }
    .btn-glow-primary:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 0 30px rgba(0, 242, 254, 0.8);
      color: #000 !important;
    }
    .btn-glow-outline {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(0, 242, 254, 0.4);
      color: var(--primary-cyan) !important;
      font-weight: 600;
      padding: 11px 26px;
      border-radius: 50px;
      backdrop-filter: blur(10px);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s ease;
    }
    .btn-glow-outline:hover {
      background: rgba(0, 242, 254, 0.15);
      border-color: var(--primary-cyan);
      box-shadow: var(--glow-blue);
      color: #fff !important;
      transform: translateY(-2px);
    }
    .navbar {
      background: rgba(6, 9, 19, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(64, 128, 255, 0.12);
      padding: 16px 0;
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .navbar-brand {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .navbar-brand i {
      font-size: 1.4rem;
      color: var(--primary-cyan);
      text-shadow: 0 0 12px var(--primary-cyan);
    }
    .nav-link {
      color: var(--text-muted) !important;
      font-weight: 500;
      padding: 8px 18px !important;
      border-radius: 8px;
      transition: all 0.25s ease;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-cyan) !important;
      background: rgba(0, 242, 254, 0.08);
    }
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 45px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: 30px;
      font-size: 0.82rem;
      color: var(--primary-cyan);
      font-weight: 600;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 680px;
      margin: 0 auto;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px rgba(0, 242, 254, 0.15);
    }
    .cat-hero-card {
      background: linear-gradient(145deg, rgba(14, 26, 56, 0.85), rgba(7, 13, 29, 0.95));
      border: 1px solid rgba(0, 242, 254, 0.25);
      border-radius: var(--radius-lg);
      padding: 35px;
      position: relative;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    }
    .metric-badge {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 12px 18px;
    }
    .filter-chip {
      background: rgba(14, 22, 45, 0.9);
      border: 1px solid var(--border-color);
      color: var(--text-muted);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.25s ease;
    }
    .filter-chip.active, .filter-chip:hover {
      background: rgba(0, 242, 254, 0.15);
      border-color: var(--primary-cyan);
      color: var(--text-main);
    }
    .data-pill {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 242, 254, 0.1);
      color: var(--primary-cyan);
      border: 1px solid rgba(0, 242, 254, 0.2);
    }
    .timeline-badge {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(0, 242, 254, 0.15);
      border: 1px solid var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-cyan);
      font-weight: 700;
      font-size: 0.9rem;
    }
    footer {
      background: #03050c;
      border-top: 1px solid rgba(64, 128, 255, 0.12);
      padding: 60px 0 30px;
      color: var(--text-dim);
    }
    @media (max-width: 991px) {
      .section-title { font-size: 1.8rem; }
    }
    @media (max-width: 767px) {
      section { padding: 45px 0; }
    }