%\documentclass[aspectratio=169,table]{beamer}
\documentclass[aspectratio=43,table]{beamer}

\usepackage{ctex}
\usepackage{graphicx}
\usepackage{booktabs}
\graphicspath{{figures/},}
\usepackage{multicol}%实现双栏


\usetheme{AnnArbor}
%\usecolortheme{beaver}
\useoutertheme{infolines}%页眉
\usecolortheme{crane}


\setbeamercolor{honghuang}{bg=red,fg=yellow}
\setbeamercolor{normal text}{bg=white}%yellow!12!red!5!} %% tex
\setbeamercolor{caption name}{fg=black} %% tex

\setbeamercolor{structure}{fg=red!80!orange!60!}
\setbeamercolor{section in head/foot}{bg=orange, fg=white}
\setbeamercolor{subsection in head/foot}{bg=yellow, fg=white}
\setbeamercolor{h2}{fg=black,bg=orange!80!}
\setbeamercolor{h1}{fg=black,bg=yellow!80!red!50!}
\setbeamertemplate{headline}
{
	\leavevmode%
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		\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,center]{h1}%
			\insertsection
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		\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,center]{h2}%
			\insertsubsection
		\end{beamercolorbox}%
		}%
	\vskip0pt%
}

\setbeamertemplate{items}[circle]

\useinnertheme{circles}

%-----------------------------老页眉----------------------------------
%\setbeamercolor{honghuang}{bg=red,fg=yellow}
%\setbeamertemplate{headline}{
%	\hbox{
%	\begin{beamercolorbox}[wd=0.5\paperwidth,ht=0.5cm,dp=2ex]{honghuang}
%		\insertsection \insertsubsection 
%	\end{beamercolorbox}
%	\begin{beamercolorbox}[wd=0.5\paperwidth,ht=0.5cm,dp=2ex]{honghuang}
%	作者：\insertshortauthor
%	\end{beamercolorbox}}
%}

%————————————————————————————背景————————————————————————————————————
%\pgfdeclareimage[width=\paperwidth]{背景}{figures/ph1.png}
%\setbeamertemplate{background canvas}{
%
%		\pgfuseimage{背景}
%
%}

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{section in toc}%
{
	\hspace{0.3\textwidth} %
	\parbox[t]{0.6\textwidth}{\inserttocsectionnumber.~~ \inserttocsection} \par
}
\setbeamertemplate{subsection in toc}%
{
	\small\hspace{0.35\textwidth} %
	\inserttocsubsection\par
}
\graphicspath{{figures/},}
%\logo{\includegraphics[width=2.5cm]{logo2}\hspace{0pt}\vspace{0pt}}

\xeCJKsetup{CJKmath=true,CheckSingle=true}
\setCJKsansfont{Microsoft YaHei}
\setsansfont{Times New Roman}

\usepackage{tasks}
\usepackage{xcolor}
\counterwithin{figure}{section}
\counterwithin{table}{section}
%-------------------------------------基本信息-----------------------------------------------
\title{电科院演示文稿}
\subtitle{————模板}
\author{李明}
\institute{电通系}
\date{\today}

%-------------------------------------基本信息-----------------------------------------------
\begin{document}

	\begin{frame}{文本出现效果}
		\begin{enumerate}[<+-|alert@+>]
			\item 序号条目1 
			\item 序号条目2
			\begin{itemize}
				\item 子条目1
				\item 子条目2
				\item 子条目3
			\end{itemize}
			\item 序号条目3
			\item<5-|alert@5> 序号条目4
			\begin{itemize}
				\item<8-|alert@8> 子条目4
				\item<9-|alert@9> 子条目5
				\item<10-|alert@10> 子条目6
			\end{itemize}
		\end{enumerate}
	\end{frame}
	
\end{document}
