将徽标添加到 tikz fancyhead 和 footer

Question

使用 OverLeaf

我想在页眉的右上角添加一个徽标。距离右边缘 1 厘米。在页脚中距离左边缘 1 厘米处添加一段文本。我尝试使用 rhead。但我对 LaTex 还很陌生，这对新手来说太花哨了。右侧的蓝色边框必须保留。

\documentclass[a4paper]{letter}
\usepackage{xcolor}
\definecolor{maxlink}{RGB}{2,60,180}
\usepackage{tikz}               % you know what this does!
\usetikzlibrary{calc}

\usepackage{fancyhdr}         % put things headers and footers and we plan misuse it ;)
\usepackage{lipsum}
%\usepackage[margin=2.5cm,headheight=26pt,includeheadfoot]{geometry}

%\setlength\headheight{26pt} %% just to make warning go away. Adjust the value after looking into the warning.
%\rhead{{\color{blue}\rule{1cm}{1cm}}}

%\rhead{\includegraphics[width=1cm]{Max-Logo.png}}

%\rhead{\begin{picture}(3,3) 
%\put(3,3){\includegraphics[width=1cm]{example-image-a}} 
%\end{picture}}

\fancypagestyle{mypage}{%
    \fancyhf{}
    \fancyhead[LO]{%
        \begin{tikzpicture}[overlay,remember picture]
            \fill [color=maxlink] (current page.north west) rectangle
                ($ (current page.south west) + (0.4cm,0cm) $);
        \end{tikzpicture}
        }
    \fancyfoot[C]{\thepage}
    \renewcommand{\headrulewidth}{0pt}
    \renewcommand{\footrulewidth}{0pt}
}

\begin{document}
\pagestyle{mypage}   % activate colored margins
\pagenumbering{gobble}
\mbox{}

\clearpage
%\pagestyle{mypage}   % activate colored margins
\pagenumbering{gobble}
\mbox{}

\end{document}

我不需要使用 tikz 和 fancy head 来制作边框，我刚刚在 如何为某些页面设置彩色边距