/* roulang page: index */
:root {
            --bg-canvas: #F8FAFC;
            --bg-card: #FFFFFF;
            --primary: #1E40AF;
            --primary-hover: #2563EB;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-dim: #64748B;
            --border-color: #E2E8F0;
        }
        body {
            background-color: var(--bg-canvas);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .code-grid-bg {
            background-size: 24px 24px;
            background-image: 
                linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
        }
        .pulse-dot {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulse-ring 2s infinite;
        }
        @keyframes pulse-ring {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

/* roulang page: category2 */
:root {
      --bg-canvas: #F8FAFC;
      --bg-card: #FFFFFF;
      --primary: #1E40AF;
      --primary-hover: #2563EB;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-dim: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .code-grid-bg {
      background-size: 24px 24px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
    }

/* roulang page: category1 */
:root {
      --bg-canvas: #F8FAFC;
      --bg-card: #FFFFFF;
      --primary: #1E40AF;
      --primary-hover: #2563EB;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-dim: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .code-grid-bg {
      background-size: 24px 24px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
    }
    .table-cell-ball {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      border-radius: 9999px;
      font-weight: 600;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.8125rem;
    }

/* roulang page: category3 */
:root {
      --bg-canvas: #F8FAFC;
      --bg-card: #FFFFFF;
      --primary: #1E40AF;
      --primary-hover: #2563EB;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-dim: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .code-grid-bg {
      background-size: 24px 24px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
    }
    .backtest-badge {
      display: inline-flex;
      align-items: center;
      padding: 0.2rem 0.65rem;
      font-size: 0.75rem;
      border-radius: 9999px;
      font-weight: 500;
    }