Template:Sidenav/styles.css

#sidenav a {
	color:inherit;
}

#sidenav li > ul {
	--toc-list-style: '└ ';
	list-style: var(--toc-list-style);
	font-weight: normal;
	opacity: .7;
}

#sidenav div > ul {
	--nav-list-style: '━ ';
	list-style: var(--nav-list-style);
}

.mw-parser-output #sidenav div > ul ::marker {
  font-weight: bold;
  font-family: sans-serif;
}