diff --git a/.gitignore b/.gitignore
index 20c7592..31fffe0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,5 @@
 .devenv*
 .direnv
 
-latex/*/*
-!*.tex
+src/*/*
+!*.typ
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 474c02f..001114d 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -3,6 +3,6 @@
     "esbenp.prettier-vscode",
     "mkhl.direnv",
     "jnoortheen.nix-ide",
-    "james-yu.latex-workshop"
+    "myriad-dreamin.tinymist"
   ]
 }
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 2bf08ac..2da3769 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -13,13 +13,20 @@
     "devenv",
     "direnv",
     "direnvrc",
+    "fontawesome",
+    "neuro",
     "nixd",
     "nixfmt",
     "nixos",
     "nixpkgs",
+    "opentype",
+    "pagebreak",
     "pkgs",
     "pompydev",
-    "texlive"
+    "qrcode",
+    "tiaoma",
+    "typst",
+    "typstyle"
   ],
 
   "[nix]": {
@@ -29,10 +36,11 @@
   "nix.enableLanguageServer": true,
   "nix.serverPath": "nixd",
 
-  "[latex]": {
-    "editor.defaultFormatter": "James-Yu.latex-workshop"
+  "[typst]": {
+    "editor.defaultFormatter": "myriad-dreamin.tinymist"
   },
-  "latex-workshop.formatting.latex": "tex-fmt",
+  "tinymist.formatterMode": "typstyle",
+  "tinymist.exportPdf": "onSave",
 
   "[jsonc]": {
     "editor.defaultFormatter": "esbenp.prettier-vscode"
diff --git a/README.md b/README.md
index 782d85f..02399b9 100644
--- a/README.md
+++ b/README.md
@@ -9,12 +9,12 @@ the early 2010s. Made with $\LaTeX$.
 
 ## Progress
 
-- [ ] [Mathematics](./latex/math/math.tex) (WIP)
-- [ ] [Physics](./latex/phy/phy.tex) (WIP)
-- [ ] [Neuroscience](./latex/neuro/neuro.tex) (WIP)
-- [ ] [Electrical Engineering](./latex/ee/ee.tex) (WIP)
-- [ ] [Chemistry](./latex/chem/chem.tex) (WIP)
-- [ ] [Computer Science](./latex/cs/cs.tex) (WIP)
+- [ ] [Mathematics](./src/math/math.typ) (WIP)
+- [ ] [Physics](./src/phy/phy.typ) (WIP)
+- [ ] [Neuroscience](./src/neuro/neuro.typ) (WIP)
+- [ ] [Electrical Engineering](./src/ee/ee.typ) (WIP)
+- [ ] [Chemistry](./src/chem/chem.typ) (WIP)
+- [ ] [Computer Science](./src/cs/cs.typ) (WIP)
 
 ## How to setup
 
@@ -24,5 +24,5 @@ the early 2010s. Made with $\LaTeX$.
    e.g.
 
    ```
-   cd latex/math && pdflatex math.tex
+   typst watch src/math/math.typ --root .
    ```
diff --git a/devenv.nix b/devenv.nix
index be77439..2a8cbe2 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -1,17 +1,28 @@
 { pkgs, ... }:
 
+let
+  fontsOverlay = import (
+    builtins.fetchTarball {
+      url = "https://github.com/pompydev/nix-google-fonts-overlay/archive/dfb84823efeb84314f8186cb2014edf05136b527.tar.gz";
+      sha256 = "sha256:01cpfyzd4xl3a462jyn2xn22hn6i1my1svyag7926r3r2vmck24y";
+    }
+  );
+in
 {
+  overlays = [ fontsOverlay ];
+
   packages = with pkgs; [
     nixd
     nixfmt-rfc-style
-    tex-fmt
+
+    font-awesome_6
   ];
 
-  # https://devenv.sh/supported-languages/texlive/
-  languages.texlive = {
+  # https://devenv.sh/supported-languages/typst/
+  languages.typst = {
     enable = true;
-    base = pkgs.texliveFull;
-    packages = [
+    fontPaths = [
+      "${pkgs.font-awesome_6}/share/fonts/opentype"
     ];
   };
 }
diff --git a/latex/chem/chem.tex b/latex/chem/chem.tex
deleted file mode 100644
index 701cb52..0000000
--- a/latex/chem/chem.tex
+++ /dev/null
@@ -1,68 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{tikz}        %
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\usetikzlibrary{tikzmark,fit}
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Chemistry}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{Atoms}
-\section{Periodic Table}
-
-\chapter{Biology}
-
-\end{document}
diff --git a/latex/cs/cs.tex b/latex/cs/cs.tex
deleted file mode 100644
index 47a3018..0000000
--- a/latex/cs/cs.tex
+++ /dev/null
@@ -1,69 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{tikz}        %
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\usetikzlibrary{tikzmark,fit}
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Computer Science}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{ISA}
-\section{x86-64}
-
-\chapter{Cryptography}
-\section{RSA}
-
-\end{document}
diff --git a/latex/ee/ee.tex b/latex/ee/ee.tex
deleted file mode 100644
index 930d9c0..0000000
--- a/latex/ee/ee.tex
+++ /dev/null
@@ -1,68 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{tikz}        %
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\usetikzlibrary{tikzmark,fit}
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Electrical Engineering}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{Units}
-\chapter{Components}
-\section{Resistors}
-\subsection{Resistors in series}
-
-\end{document}
diff --git a/latex/math/math.tex b/latex/math/math.tex
deleted file mode 100644
index 108a04d..0000000
--- a/latex/math/math.tex
+++ /dev/null
@@ -1,96 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Mathematics}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{Algebra}
-\section{Types of Numbers}
-
-\begin{description}
-  \item[$\mathbb{C}$] - Complex / 복소수 ($\pmb{a+bi}$)
-    \begin{description}
-      \item[$\mathbb{R}$] - Real / 실수 ($\pmb{a}+bi$)
-        \begin{description}
-          \item[$\mathbb{Q}$] - Rational / 유리수 ($\frac{p}{q} | p,q \in \mathbb{Z}, q \ne 0$)
-            \begin{description}
-              \item[$\mathbb{Z}$] - Integer / 정수 ($..., -1, 0, 1, ...$)
-                \begin{description}
-                  \item[$\mathbb{N}$] - Natural / 자연수 ($1, 2, 3, ...$)
-                  \item[$\mathbb{W}$] - Whole ($0, 1, 2, ...$)
-                \end{description}
-            \end{description}
-          \item Irrational / 무리수
-        \end{description}
-      \item[$\mathbb{I}$] - Imaginary / 허수 ($a+\pmb{bi}$)
-    \end{description}
-\end{description}
-\newpage
-
-\section{Rational decimal numbers}
-\subsection{Termination test}
-Given simplified fraction of rational number $x = \frac{p}{q}$, if $q = 2^m \cdot 5^n | m, n \in \mathbb{Z}$,
-then decimal form of $x$ is terminating.
-
-\subsection{Decimal-fraction conversion}
-To convert non-terminating repeating decimal number to fraction, use the following formula:
-$$
-a.\textcolor{red}{b}\overline{\textcolor{blue}{cd}}=\frac{abcd-ab}{\textcolor{blue}{99}\textcolor{red}{0}}
-$$
-
-\newpage
-
-\end{document}
diff --git a/latex/neuro/neuro.tex b/latex/neuro/neuro.tex
deleted file mode 100644
index ea6e08b..0000000
--- a/latex/neuro/neuro.tex
+++ /dev/null
@@ -1,68 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{tikz}        %
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\usetikzlibrary{tikzmark,fit}
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Neuroscience}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{Nervous system}
-\section{Neuron}
-\section{Brain}
-\section{Vertebral column}
-
-\end{document}
diff --git a/latex/phy/phy.tex b/latex/phy/phy.tex
deleted file mode 100644
index 0662c38..0000000
--- a/latex/phy/phy.tex
+++ /dev/null
@@ -1,66 +0,0 @@
-\documentclass[11pt]{book}
-\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
-\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
-\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
-\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
-\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
-\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
-\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
-\usepackage{kotex}       %
-\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
-\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
-\usepackage{tikz}        %
-\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
-\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
-\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
-
-\usetikzlibrary{tikzmark,fit}
-
-\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
-\titlespacing{\chapter}{0pt}{-20pt}{0pt}
-
-\setlist[description]{leftmargin=15pt,labelindent=0pt}
-
-\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
-\newcommand{\gh}{
-  https://github.com/pompydev/cheatsheets/tree/\HEAD
-}
-
-\newcommand{\cc}[1]{
-  $\vcenter{\hbox{#1}}$
-}
-
-\begin{document}
-
-\pagenumbering{gobble}
-
-\centerline{\large pomp's}
-\null
-\centerline{\LARGE \textbf{Physics}}
-\null
-\centerline{\large Cheat Sheet}
-
-\vspace{236.5pt}
-
-\columnratio{0.63}
-\begin{paracol}{2}
-  \vspace{21pt}
-  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
-
-  git reversion:\gitrevision
-
-  made with \LaTeX
-  \switchcolumn
-  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
-\end{paracol}
-\newpage
-
-\tableofcontents
-\newpage
-
-\pagenumbering{arabic}
-\chapter{Classical Mechanics}
-\section{Thermodynamics}
-
-\end{document}
diff --git a/src/_lib/cover.typ b/src/_lib/cover.typ
new file mode 100644
index 0000000..347aa21
--- /dev/null
+++ b/src/_lib/cover.typ
@@ -0,0 +1,42 @@
+#import "@preview/fontawesome:0.5.0": fa-github
+#import "@preview/tiaoma:0.3.0"
+
+#let cover(
+  name: str,
+  slug: str,
+) = {
+  let HEAD = read("../../.git/refs/heads/master").trim()
+  let gh = "https://github.com/pompydev/cheatsheets/blob/" + HEAD + "/src/" + slug + "/" + slug + ".typ"
+
+  align(
+    center,
+    [
+      pomp's\
+      #text(20pt)[*#name*]\
+      cheat sheet
+    ],
+  )
+
+  align(bottom)[
+    #grid(
+      columns: (auto, auto),
+      rows: auto,
+      gutter: 1fr,
+      [
+        #align(top)[
+          #link(gh)[#fa-github() pompydev/cheatsheets]\
+          git revision: #HEAD.slice(0, 7)\
+          made with #link("https://github.com/typst/typst")[Typst] // https://typst.app/legal/brand/
+        ]
+      ],
+      rect(
+        link(gh)[
+          #tiaoma.qrcode(gh, width: 18mm)
+        ],
+        inset: 1mm,
+      ),
+    )
+  ]
+
+  pagebreak()
+}
diff --git a/src/chem/chem.typ b/src/chem/chem.typ
new file mode 100644
index 0000000..cc7858c
--- /dev/null
+++ b/src/chem/chem.typ
@@ -0,0 +1,24 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Chemistry", slug: "math")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= Atoms
+== Periodic Table
+
+#pagebreak()
+
+= Biology
diff --git a/src/cs/cs.typ b/src/cs/cs.typ
new file mode 100644
index 0000000..2d9451e
--- /dev/null
+++ b/src/cs/cs.typ
@@ -0,0 +1,25 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Computer Science", slug: "cs")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= ISA
+== x86-64
+
+#pagebreak()
+
+= Cryptography
+== RSA
diff --git a/src/ee/ee.typ b/src/ee/ee.typ
new file mode 100644
index 0000000..8504c86
--- /dev/null
+++ b/src/ee/ee.typ
@@ -0,0 +1,25 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Electrical Engineering", slug: "ee")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= Units
+
+#pagebreak()
+
+= Components
+== Resistors
+=== Resistors in series
diff --git a/src/math/math.typ b/src/math/math.typ
new file mode 100644
index 0000000..33577f7
--- /dev/null
+++ b/src/math/math.typ
@@ -0,0 +1,54 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Mathematics", slug: "math")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= Algebra
+
+== Types of Numbers
+
+- $CC$ - Complex / 복소수 ($bold(a + b i)$)
+  - $RR$ - Real / 실수 ($bold(a) + b i$)
+    - $QQ$ - Rational / 유리수 ($p / q|p,q in ZZ,q != 0$)
+    - $ZZ$ - Integer / 정수 ($..., -1, 0, 1, ...$)
+      - $NN$ - Natural / 자연수 ($1, 2, 3, ...$)
+      - $WW$ - Whole ($0, 1, 2, ...$)
+    - Irrational / 무리수 ($pi, e, sqrt(2), ...$)
+  - $II$ - Imaginary / 허수 ($a + bold(b i)$)
+
+#pagebreak()
+
+== Rational decimal Numbers
+=== Termination test
+Given simplified fraction of rational number $x = p / q$, if $q = 2^m dot 5^n | m, n in ZZ$,
+then decimal form of $x$ is terminating.
+
+=== Decimal-fraction conversion
+To convert a repeating decimal number to fraction, use the following formula:
+
+#text(size: 15pt)[
+  #align(center)[
+    $a.#text(red)[b]#overline(stroke: black)[#text(blue)[cd]] = (a b c d-a b) / (#text(blue)[99]#text(red)[0])$
+  ]
+]
+
+#pagebreak()
+
+== Formulas
+
+=== Factoring formulas
+
+#pagebreak()
diff --git a/src/neuro/neuro.typ b/src/neuro/neuro.typ
new file mode 100644
index 0000000..b3b9f3b
--- /dev/null
+++ b/src/neuro/neuro.typ
@@ -0,0 +1,24 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Neuroscience", slug: "neuro")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= Nervous system
+== Neuron
+
+== Brain
+
+== Vertebral column
diff --git a/src/phy/phy.typ b/src/phy/phy.typ
new file mode 100644
index 0000000..dadcbd8
--- /dev/null
+++ b/src/phy/phy.typ
@@ -0,0 +1,20 @@
+#import "../_lib/cover.typ": cover
+
+#set page(
+  width: 90mm,
+  height: 140mm,
+  margin: 5mm,
+  numbering: "1",
+)
+#set list(marker: "•")
+
+#cover(name: "Physics", slug: "phy")
+
+#set heading(numbering: "1.")
+#pagebreak()
+
+#outline()
+#pagebreak()
+
+= Classical mechanics
+== Thermodynamics