/* roulang page: index */
:root {
      --bg-base: #090D14;
      --bg-card: #101725;
      --bg-card-hover: #151F32;
      --aurora-from: #10B981;
      --aurora-to: #06B6D4;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-subtle: rgba(51, 65, 85, 0.4);
    }
    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;
      -webkit-font-smoothing: antialiased;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .aurora-gradient-btn {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      box-shadow: 0 4px 20px rgba(16, 185, 129, 0.25);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .aurora-gradient-btn:hover {
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
    }
    .card-glass {
      background: rgba(16, 23, 37, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(51, 65, 85, 0.5);
      transition: all 0.3s ease;
    }
    .card-glass:hover {
      border-color: rgba(16, 185, 129, 0.4);
      box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.15);
    }
    .glow-border {
      position: relative;
    }
    .glow-border::after {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: inherit;
      padding: 1px;
      background: linear-gradient(135deg, rgba(16, 185, 129, 0.4), transparent, rgba(6, 182, 212, 0.3));
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }

/* roulang page: category2 */
:root {
      --bg-base: #090D14;
      --bg-card: #101725;
      --bg-card-hover: #151F32;
      --aurora-from: #10B981;
      --aurora-to: #06B6D4;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-subtle: rgba(51, 65, 85, 0.4);
    }
    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;
      -webkit-font-smoothing: antialiased;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .aurora-gradient-btn {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      box-shadow: 0 4px 20px rgba(16, 185, 129, 0.25);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .aurora-gradient-btn:hover {
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
    }
    .card-glass {
      background: rgba(16, 23, 37, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(51, 65, 85, 0.5);
      transition: all 0.3s ease;
    }
    .card-glass:hover {
      border-color: rgba(16, 185, 129, 0.4);
      box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.15);
    }
    .glow-border {
      position: relative;
    }
    .glow-border::after {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: inherit;
      padding: 1px;
      background: linear-gradient(135deg, rgba(16, 185, 129, 0.4), transparent, rgba(6, 182, 212, 0.3));
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    /* Tab & Filter Chips */
    .chip-active {
      background: rgba(16, 185, 129, 0.15);
      border-color: rgba(16, 185, 129, 0.6);
      color: #10B981;
    }
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }

/* roulang page: category1 */
:root {
      --bg-base: #090D14;
      --bg-card: #101725;
      --bg-card-hover: #151F32;
      --aurora-from: #10B981;
      --aurora-to: #06B6D4;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-subtle: rgba(51, 65, 85, 0.4);
    }
    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;
      -webkit-font-smoothing: antialiased;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .aurora-gradient-btn {
      background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
      box-shadow: 0 4px 20px rgba(16, 185, 129, 0.25);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .aurora-gradient-btn:hover {
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
    }
    .card-glass {
      background: rgba(16, 23, 37, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(51, 65, 85, 0.5);
      transition: all 0.3s ease;
    }
    .card-glass:hover {
      border-color: rgba(16, 185, 129, 0.4);
      box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.15);
    }
    .glow-border {
      position: relative;
    }
    .glow-border::after {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: inherit;
      padding: 1px;
      background: linear-gradient(135deg, rgba(16, 185, 129, 0.4), transparent, rgba(6, 182, 212, 0.3));
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }