答案1
该主题jambrostyle
名为https://github.com/ambropo/VAR-Toolbox/blob/main/beamerthemejambrostyle.sty
\documentclass{beamer}
\usetheme{jambrostyle}
\begin{document}
\section{section}
\begin{frame}
\frametitle{title}
\begin{itemize}
\item test
\end{itemize}
\end{frame}
\end{document}