Demo: Mathpix-Style Rendering

A living demo of every Markdown/LaTeX rendering feature the platform supports: bare math environments, $$ math + \eqref, itemize/enumerate with full label-format preservation ((a)/a)/a.), description/center environments, siunitx-style quantities (\SI, \num, \ang), LaTeX tabular + booktabs + multicolumn, captioned content-tables with \tableref, content-figures with \figref, and theorem/definition/example/callout blocks.