fixed link color and used it to color chinese links in preface

Author: thomasWeise

styles/colors.sty

@@ -8,7 +8,8 @@
 %%
 %% Link and Citation Colors
 %%
-\colorlet{href-linkcolor}{hfuu-red!60!black}%
+%\colorlet{href-linkcolor}{hfuu-red!60!black}%
+\definecolor{href-linkcolor}{HTML}{6D1519}%
 \colorlet{href-citecolor}{href-linkcolor}%
 \colorlet{href-urlcolor}{href-linkcolor}%
 %%

text/front/preface/preface.tex

@@ -46,8 +46,8 @@ \chapter*{Preface}%
 Copyright \textcopyright\ 2024\\[3pt]%
 Prof.~Dr.~\href{http://iao.hfuu.edu.cn/5}{Thomas Weise}~\cnPdf{profWeise}\\%
 at the Institute of Applied Optimization~(\cnPdfRaw{iao}, \href{http://iao.hfuu.edu.cn}{IAO})\\%
-of the School of Artificial Intelligence and Big Data~(\href{http://www.hfuu.edu.cn/jsjx/}{\cnPdfRaw{school}})\\%
-of \href{http://www.hfuu.edu.cn/english}{Hefei University}~(\href{http://www.hfuu.edu.cn}{\cnPdfRaw{uni}}),\\%
+of the School of Artificial Intelligence and Big Data~(\href{http://www.hfuu.edu.cn/jsjx/}{\cnPdfRaw{schoolLink}})\\%
+of \href{http://www.hfuu.edu.cn/english}{Hefei University}~(\href{http://www.hfuu.edu.cn}{\cnPdfRaw{uniLink}}),\\%
 in Hefei, Anhui, China~\cnPdf{city}\\[6pt]%
 Contact me via email to \href{mailto:[email protected]}{[email protected]} with CC to \href{mailto:[email protected]}{[email protected]}.%
 \end{flushleft}%