/* roulang page: index */
:root {
            --bg-dark: #0B0F19;
            --bg-card: #111827;
            --accent-emerald: #10B981;
            --accent-cyan: #06B6D4;
            --accent-purple: #8B5CF6;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-dim: rgba(255, 255, 255, 0.08);
        }
        body {
            background-color: var(--bg-dark);
            color: #CBD5E1;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .mono-font {
            font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", "Fira Code", monospace;
        }
        .glow-emerald {
            box-shadow: 0 0 25px -5px rgba(16, 185, 129, 0.3);
        }
        .glass-nav {
            background: rgba(11, 15, 25, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-dim);
        }
        .bg-grid-pattern {
            background-size: 32px 32px;
            background-image: 
                linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
        }
        .card-tech {
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid var(--border-dim);
            transition: all 0.25s ease-in-out;
        }
        .card-tech:hover {
            border-color: rgba(6, 182, 212, 0.4);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
        }

/* roulang page: category1 */
:root {
      --bg-dark: #0B0F19;
      --bg-card: #111827;
      --accent-emerald: #10B981;
      --accent-cyan: #06B6D4;
      --accent-purple: #8B5CF6;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-dim: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: #CBD5E1;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .mono-font {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }
    .glass-nav {
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-dim);
    }
    .bg-grid-pattern {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    }
    .card-tech {
      background: rgba(17, 24, 39, 0.65);
      border: 1px solid var(--border-dim);
      transition: all 0.25s ease-in-out;
    }
    .card-tech:hover {
      border-color: rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
    }
    .filter-tab.active {
      background-color: rgba(16, 185, 129, 0.15);
      color: #10B981;
      border-color: rgba(16, 185, 129, 0.4);
    }

/* roulang page: category2 */
:root {
            --bg-dark: #0B0F19;
            --bg-card: #111827;
            --accent-emerald: #10B981;
            --accent-cyan: #06B6D4;
            --accent-purple: #8B5CF6;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-dim: rgba(255, 255, 255, 0.08);
        }
        body {
            background-color: var(--bg-dark);
            color: #CBD5E1;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .mono-font {
            font-family: "JetBrains Mono", "Fira Code", monospace;
        }
        .glass-nav {
            background: rgba(11, 15, 25, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-dim);
        }
        .bg-grid-pattern {
            background-size: 32px 32px;
            background-image: 
                linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
        }
        .card-tech {
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid var(--border-dim);
            transition: all 0.25s ease-in-out;
        }
        .card-tech:hover {
            border-color: rgba(6, 182, 212, 0.4);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
        }
        /* Custom Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #0B0F19;
        }
        ::-webkit-scrollbar-thumb {
            background: #1E293B;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #334155;
        }

/* roulang page: category3 */
:root {
            --bg-dark: #0B0F19;
            --bg-card: #111827;
            --accent-emerald: #10B981;
            --accent-cyan: #06B6D4;
            --accent-purple: #8B5CF6;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-dim: rgba(255, 255, 255, 0.08);
        }
        body {
            background-color: var(--bg-dark);
            color: #CBD5E1;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .mono-font {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        }
        .glass-nav {
            background: rgba(11, 15, 25, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-dim);
        }
        .bg-grid-pattern {
            background-size: 32px 32px;
            background-image: 
                linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
        }
        .card-tech {
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid var(--border-dim);
            transition: all 0.25s ease-in-out;
        }
        .card-tech:hover {
            border-color: rgba(6, 182, 212, 0.4);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
        }
        details > summary {
            list-style: none;
        }
        details > summary::-webkit-details-marker {
            display: none;
        }

/* roulang page: category4 */
:root {
      --bg-dark: #0B0F19;
      --bg-card: #111827;
      --accent-emerald: #10B981;
      --accent-cyan: #06B6D4;
      --accent-purple: #8B5CF6;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-dim: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: #CBD5E1;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .mono-font {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }
    .glass-nav {
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-dim);
    }
    .bg-grid-pattern {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    }
    .card-tech {
      background: rgba(17, 24, 39, 0.65);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-dim);
      transition: all 0.25s ease-in-out;
    }
    .card-tech:hover {
      border-color: rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
    }
    .glow-emerald {
      box-shadow: 0 0 25px -5px rgba(16, 185, 129, 0.25);
    }
    details > summary::-webkit-details-marker {
      display: none;
    }