ll-type-markdown .markdown-preview h3 { font-size: 1.17em; margin: 0.83em 0; }
        .cell-type-markdown .markdown-preview code {
            background: var(--code-background);
            padding: 2px 4px;
            border-radius: 3px;
            font-family: var(--font-mono);
            font-size: 0.9em;
        }
        
        .cell-type-markdown .markdown-preview pre {
            background: var(--code-background);
            padding: 12px;
            border-radius: 6px;
            overflo