diff --git a/bootstrap.sh b/bootstrap.sh
index dcc8bad..e2d026d 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -45,6 +45,8 @@ test -d $HOME/.config/nvim/lua || mkdir -p $HOME/.config/nvim/lua
 test -L $HOME/.config/nvim/lua/config || ln -f -s $BASEDIR/neovim/config $HOME/.config/nvim/lua/config
 test -d $HOME/.config/nvim/lsp || mkdir -p $HOME/.config/nvim/lsp
 test -L $HOME/.config/nvim/lsp/phpactor.lua || ln -f -s $BASEDIR/neovim/lsp/phpactor.lua $HOME/.config/nvim/lsp/phpactor.lua
+test -d $HOME/.config/nvim/after || mkdir -p $HOME/.config/nvim/after
+test -L $HOME/.config/nvim/after/ftplugin || ln -f -s $BASEDIR/neovim/after/ftplugin $HOME/.config/nvim/after/ftplugin
 
 # Claude Code statusline
 test -d $HOME/.claude || mkdir $HOME/.claude
diff --git a/neovim/after/ftplugin/markdown.lua b/neovim/after/ftplugin/markdown.lua
new file mode 100644
index 0000000..bc1c9e9
--- /dev/null
+++ b/neovim/after/ftplugin/markdown.lua
@@ -0,0 +1,4 @@
+-- Hard-wrap prose at 80, the markdownlint/prettier default. +1 puts the guide
+-- just past the limit, so a line touching it is still fine.
+vim.bo.textwidth = 80
+vim.wo.colorcolumn = '+1'