How can I create a windling line like in the picture?
\documentclass[10pt,a4paper]{article}
\usepackage[many]{tcolorbox}
\usepackage[tikz]{bclogo}
\usepackage{mathtools,systeme,amssymb,amsfonts,amsmath,mathabx,fge,skak}
\usepackage{mathrsfs,eufrak,yfonts,pifont}
\usepackage{polyglossia}
\setdefaultlanguage[calendar=gregorian,locale=algeria]{arabic}
\setotherlanguage{english}
\newfontfamily\arabicfont[Script=Arabic,Scale=1]{Amiri}
\newfontfamily\arabicfontsf[Script=Arabic,Scale=1.2]{Amiri}
\newfontfamily\myfont[Script=Arabic,Scale=1.3]{Amiri}
\newtcolorbox{proof 1}[2][]{
freelance,before skip=0mm,after skip=0pt,
colback=white,title={\hspace*{-0.6cm}\bccrayon\ \bfseries\myfont\textcolor{red!90!black}{إثبـــات}},
bottomrule=0pt,top=-0cm,left=0mm,right=3mm,bottom=-4mm,
boxrule=0pt,colframe=white,
overlay unbroken and first={
\draw[red!40,line width=2.1pt,]
([xshift=-1.3mm,yshift=-8mm]frame.north east) --
([xshift=-1.3mm,yshift=-8mm]frame.north east) --
([xshift=-1.3mm,yshift=-0mm]frame.south east);
\hfill \textcolor{red!70!black}{$\blacksquare$};}}
\begin{document}
\begin{proof 1}
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
اكتب هنا\\
\end{proof 1}
\end{document}


