.brand {
	color: #710a53;
	text-decoration: none;
}

pre, a {
	word-break: break-all;
}

#toggletoc {
	display: none;
}

nav#TableOfContents {
	display: none;
}

nav#TableOfContents * {
	text-decoration: none;
}

#toggletoc + label::before {
	content: "[";
}

#toggletoc + label::after {
	content: " =]";
}

#toggletoc:checked + label::after {
	content: " x]";
}

#toggletoc:checked ~ nav#TableOfContents {
	display: block;
}

details > summary:first-child::before {
	content:  "[";
}

details > summary:first-child::after {
	content:  " =]";
}

details[open] > summary:first-child::after {
	content:  " x]";
}

img[src*="/math/"] {
	vertical-align: sub;
}

@media (prefers-color-scheme: dark) {
	.brand {
		color: #fe4fc4;
		font-weight: normal;
	}

	img[src*="/math/"] {
		filter: invert(1);
	}
}