/* roulang page: index */
:root {
      --bg-base: #060b14;
      --bg-surface: #0b1528;
      --border-glass: rgba(56, 189, 248, 0.15);
      --accent-blue: #0ea5e9;
      --glow-blue: #38bdf8;
      --glow-purple: #818cf8;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-panel {
      background: rgba(11, 21, 40, 0.7);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-panel:hover {
      border-color: rgba(56, 189, 248, 0.35);
      box-shadow: 0 10px 30px -10px rgba(14, 165, 233, 0.2);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
      transform: translateY(-2px);
    }
    .btn-glass {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.3);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass:hover {
      background: rgba(56, 189, 248, 0.15);
      border-color: var(--glow-blue);
      color: #fff;
    }
    .text-glow {
      text-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    }
    .hero-glow-bloom {
      position: absolute;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(129, 140, 248, 0.08) 40%, rgba(6, 11, 20, 0) 70%);
      top: -100px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 0;
      pointer-events: none;
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: rgba(56, 189, 248, 0.25);
      border-radius: 9999px;
    }
    .custom-scrollbar::-webkit-scrollbar-track {
      background: rgba(11, 21, 40, 0.5);
    }

/* roulang page: category2 */
:root {
      --bg-base: #060b14;
      --bg-surface: #0b1528;
      --border-glass: rgba(56, 189, 248, 0.15);
      --accent-blue: #0ea5e9;
      --glow-blue: #38bdf8;
      --glow-purple: #818cf8;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
      transform: translateY(-2px);
    }
    .btn-glass {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.3);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass:hover {
      background: rgba(56, 189, 248, 0.15);
      border-color: var(--glow-blue);
      color: #fff;
    }
    .text-glow {
      text-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    }
    .hero-glow-bloom {
      position: absolute;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(129, 140, 248, 0.08) 40%, rgba(6, 11, 20, 0) 70%);
      top: -100px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 0;
      pointer-events: none;
    }
    .glass-panel {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(56, 189, 248, 0.15);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-panel:hover {
      border-color: rgba(56, 189, 248, 0.35);
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.2);
    }
    .filter-chip {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid rgba(56, 189, 248, 0.15);
      transition: all 0.2s ease;
    }
    .filter-chip:hover, .filter-chip.active {
      background: rgba(14, 165, 233, 0.15);
      border-color: var(--glow-blue);
      color: #38bdf8;
      box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
    }

/* roulang page: category1 */
:root {
      --bg-base: #060b14;
      --bg-surface: #0b1528;
      --border-glass: rgba(56, 189, 248, 0.15);
      --accent-blue: #0ea5e9;
      --glow-blue: #38bdf8;
      --glow-purple: #818cf8;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
      transform: translateY(-2px);
    }
    .btn-glass {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.3);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass:hover {
      background: rgba(56, 189, 248, 0.15);
      border-color: var(--glow-blue);
      color: #fff;
    }
    .text-glow {
      text-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    }
    .card-glass {
      background: rgba(15, 23, 42, 0.65);
      border: 1px solid rgba(56, 189, 248, 0.12);
      backdrop-filter: blur(16px);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-glass:hover {
      border-color: rgba(56, 189, 248, 0.45);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(14, 165, 233, 0.3);
    }
    .filter-tag {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.08);
      color: #94a3b8;
      transition: all 0.2s ease;
    }
    .filter-tag:hover, .filter-tag.active {
      background: rgba(14, 165, 233, 0.15);
      border-color: var(--glow-blue);
      color: #38bdf8;
      box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
    }

/* roulang page: category3 */
:root {
      --bg-base: #060b14;
      --bg-surface: #0b1528;
      --border-glass: rgba(56, 189, 248, 0.15);
      --accent-blue: #0ea5e9;
      --glow-blue: #38bdf8;
      --glow-purple: #818cf8;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
      transform: translateY(-2px);
    }
    .btn-glass {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.3);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass:hover {
      background: rgba(56, 189, 248, 0.15);
      border-color: var(--glow-blue);
      color: #fff;
    }
    .text-glow {
      text-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(56, 189, 248, 0.15);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glass-card:hover {
      border-color: rgba(56, 189, 248, 0.45);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(14, 165, 233, 0.25);
    }
    .filter-tag {
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.08);
      color: #94a3b8;
      transition: all 0.2s ease;
    }
    .filter-tag:hover {
      border-color: rgba(56, 189, 248, 0.3);
      color: #38bdf8;
    }
    .filter-tag.active {
      background: rgba(14, 165, 233, 0.15);
      border-color: #38bdf8;
      color: #38bdf8;
      box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
    }