/* roulang page: index */
:root {
            --bg-deep: #0c0e12;
            --bg-card: #13171f;
            --bg-panel: #181d26;
            --primary: #10b981;
            --primary-dark: #059669;
            --accent-cyan: #06b6d4;
            --accent-amber: #f59e0b;
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-metal: rgba(51, 65, 85, 0.7);
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-muted);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }

        .industrial-grid {
            background-image: radial-gradient(rgba(16, 185, 129, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }

        .hud-border {
            border: 1px solid var(--border-metal);
            position: relative;
        }

        .hud-border::after {
            content: '';
            position: absolute;
            top: -1px;
            right: -1px;
            width: 8px;
            height: 8px;
            border-top: 2px solid var(--primary);
            border-right: 2px solid var(--primary);
        }

        .hud-border::before {
            content: '';
            position: absolute;
            bottom: -1px;
            left: -1px;
            width: 8px;
            height: 8px;
            border-bottom: 2px solid var(--primary);
            border-left: 2px solid var(--primary);
        }

        .cta-glow {
            box-shadow: 0 0 20px rgba(16, 185, 129, 0.35);
            transition: all 0.25s ease-in-out;
        }

        .cta-glow:hover {
            box-shadow: 0 0 30px rgba(16, 185, 129, 0.55);
            transform: translateY(-2px);
        }

        .terminal-scroll::-webkit-scrollbar {
            width: 4px;
        }
        .terminal-scroll::-webkit-scrollbar-track {
            background: #0c0e12;
        }
        .terminal-scroll::-webkit-scrollbar-thumb {
            background: #1e293b;
            border-radius: 2px;
        }

        details summary::-webkit-details-marker {
            display: none;
        }

/* roulang page: category1 */
:root {
      --bg-deep: #0c0e12;
      --bg-card: #13171f;
      --bg-panel: #181d26;
      --primary: #10b981;
      --primary-dark: #059669;
      --accent-cyan: #06b6d4;
      --accent-amber: #f59e0b;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --border-metal: rgba(51, 65, 85, 0.7);
    }
    body {
      background-color: var(--bg-deep);
      color: var(--text-muted);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .industrial-grid {
      background-image: radial-gradient(rgba(16, 185, 129, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .hud-border {
      border: 1px solid var(--border-metal);
      position: relative;
    }
    .hud-border::after {
      content: '';
      position: absolute;
      top: -1px;
      right: -1px;
      width: 8px;
      height: 8px;
      border-top: 2px solid var(--primary);
      border-right: 2px solid var(--primary);
    }
    .hud-border::before {
      content: '';
      position: absolute;
      bottom: -1px;
      left: -1px;
      width: 8px;
      height: 8px;
      border-bottom: 2px solid var(--primary);
      border-left: 2px solid var(--primary);
    }
    .cta-glow {
      box-shadow: 0 0 20px rgba(16, 185, 129, 0.35);
      transition: all 0.25s ease-in-out;
    }
    .cta-glow:hover {
      box-shadow: 0 0 30px rgba(16, 185, 129, 0.55);
      transform: translateY(-2px);
    }
    .filter-btn-active {
      background: rgba(16, 185, 129, 0.15);
      border-color: #10b981;
      color: #34d399;
      box-shadow: 0 0 12px rgba(16, 185, 129, 0.25);
    }