/* roulang page: index */
:root {
      --bg-main: #08090C;
      --bg-surface: #0F1117;
      --bg-card: #161922;
      --color-accent: #FF1744;
      --color-accent-gold: #FF9100;
      --color-green: #00E676;
      --color-cyan: #00E5FF;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }

    body {
      background-color: var(--bg-main);
      color: #F1F5F9;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }

    .glass-nav {
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background-color: rgba(15, 17, 23, 0.82);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .hud-border {
      border: 1px solid var(--border-subtle);
      transition: all 0.25s ease-in-out;
    }
    .hud-border:hover {
      border-color: rgba(255, 23, 68, 0.45);
      box-shadow: 0 8px 30px -4px rgba(255, 23, 68, 0.12);
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--color-green);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 10px var(--color-green);
      animation: pulseGlow 2s infinite ease-in-out;
    }

    @keyframes pulseGlow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    /* Accordion Details/Summary Reset */
    details summary::-webkit-details-marker {
      display: none;
    }
    details summary {
      list-style: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(45deg);
      color: var(--color-accent);
    }

/* roulang page: category1 */
:root {
      --bg-main: #08090C;
      --bg-surface: #0F1117;
      --bg-card: #161922;
      --color-accent: #FF1744;
      --color-accent-gold: #FF9100;
      --color-green: #00E676;
      --color-cyan: #00E5FF;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    body {
      background-color: var(--bg-main);
      color: #F1F5F9;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-nav {
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background-color: rgba(15, 17, 23, 0.82);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .hud-border {
      border: 1px solid var(--border-subtle);
      transition: all 0.25s ease-in-out;
    }
    .hud-border:hover {
      border-color: rgba(255, 23, 68, 0.45);
      box-shadow: 0 8px 30px -4px rgba(255, 23, 68, 0.12);
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--color-accent);
      box-shadow: 0 0 10px var(--color-accent);
      animation: pulse-ring 2s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
    }
    @keyframes pulse-ring {
      0% { transform: scale(0.9); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; filter: drop-shadow(0 0 6px var(--color-accent)); }
      100% { transform: scale(0.9); opacity: 0.8; }
    }
    details[open] summary .faq-icon {
      transform: rotate(45deg);
      color: var(--color-accent);
    }
    .badge-tag {
      font-family: var(--font-mono);
      font-size: 0.68rem;
      padding: 0.2rem 0.55rem;
      border-radius: 0.25rem;
      letter-spacing: 0.03em;
    }
    .no-scrollbar::-webkit-scrollbar {
      display: none;
    }
    .no-scrollbar {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }