为 beamer 主题定义 opentype 字体

Question

我正在努力适应jhsph beamer主题(https://github.com/jfiksel/jhsphbeamer) 更广泛地适用于 JHU 的其他部门，理想情况下，主题至少接近 JHU 的“官方”字体系列（https://brand.jhu.edu/typography/）。

我已经取得了很大进展，但在使一些字体正常工作方面遇到了困难。

使用 lualatex 和 fontspec，我可以执行以下操作：

\newfontfamily\quadonmed{Quadon Medium}
\newfontfamily\arnhem{Arnhem Pro Bln}
\newfontfamily\arnbold{Arnhem Pro Bold}
...
\setbeamerfont{frametitle}{family=\quadonmed}
\setbeamerfont{framesubtitle}{family=\quadonmed}

这适用于一些模板：frametitle、framesubtitle、item、itemize/enumerate body、itemize/enumerate subbody、itemize/enumerate subsubbody。但它确实不是适用于标题、副标题、作者、机构、日期或（最成问题的）结构或普通文本。

我可以通过以下方法使普通文本以正确的字体显示：

\setsansfont{Arnhem Pro Bln}

但随后会以该字体呈现所有文本，包括标题和副标题。

我没有找到\setbeamerfont详细使用命令的文档或示例，因此非常感谢您的帮助或指点。

更新于 2/3/22：这是 MWE：beamerthemeJHUKSAS.sty：

\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{textcomp}
\usepackage[no-math]{fontspec}
\usepackage{luatextra}
%\usefonttheme{professonalfonts}

% Use Helvetica, as requested
%\usepackage[scaled]{helvet}
%\usepackage[T1]{fontenc}
%\renewcommand\familydefault{\sfdefault}

%For some reason this is the only way I can get the regular body text
% to show up in Arnhem. 
%\setsansfont{Arnhem Pro Bln}

%This seems to work but want to tweak the specific elements. Take a look at
% http://www.cpt.univ-mrs.fr/~masson/latex/Beamer-appearance-cheat-sheet.pdf
% for more on each element. As of now the normal text one isn't working
\newfontfamily\quadonxb{Quadon ExtraBold}
\newfontfamily\quadonmed{Quadon Medium}
\newfontfamily\arnhem{Arnhem Pro Bln}
\newfontfamily\arnbold{Arnhem Pro Bold}

%%Arrgh, the title page isn't reading these commands for some reason!
\setbeamerfont{title}{family=\quadonmed}
\setbeamerfont{frametitle}{family=\quadonmed}
\setbeamerfont{framesubtitle}{family=\quadonmed}
\setbeamerfont{structure}{family=\arnhem}
\setbeamerfont{normal text}{family=\arnhem}
\setbeamerfont{block}{parent=normal text}
\setbeamerfont{item}{family=\arnbold}
\setbeamerfont{itemize/enumerate body}{parent=normal text}
\setbeamerfont{itemize/enumerate subbody}{parent=itemize/enumerate body}
\setbeamerfont{itemize/enumerate subsubbody}{parent=itemize/enumerate subbody}
\setbeamerfont{description body}{parent=normal text}
\setbeamerfont{subtitle}{parent=title}
\setbeamerfont{author}{parent=title}
\setbeamerfont{institute}{parent=title}
\setbeamerfont{date}{parent=title}

mwe.tex：

\documentclass[slides]{beamer}
\usepackage{pgfpages,url,comment}

\usetheme{JHUKSAS}

\mode<handout>{\pgfpagesuselayout{2 on 1}[letterpaper,border
    shrink=5mm]\setbeameroption{show notes}}

\title{Minimal Working Example (MWE)}
\date{Sociology 101}
\author{Andrew J. Perrin}

\begin{document}

\begin{frame}
  \titlepage
  \note{~}
\end{frame}

\begin{frame}{The title will be rendered correctly but}
  This text is not going to show up right
  \begin{itemize}
  \item and this will be fine
  \end{itemize}
  \note{~}
\end{frame}

\end{document}