To use this theme:

1. install fonts. [FiraGO](https://github.com/bBoxType/FiraGO), [firamath](https://github.com/firamath/firamath)(build from source) and [Source Han Sans SC](https://github.com/adobe-fonts/source-han-sans/releases).
2. use xelatex. `.latexmkrc` generated by chatgpt
```latexmk
$pdf_mode = 1;
$latex = 'xelatex %O %S';
$pdflatex = 'xelatex %O %S';
$dvi_mode = 0;  
$postscript_mode = 0;
```