body {
	margin: 1rem;
	padding: 0;
	background-color: var(--background-color);
	color: var(--foreground-color);
	font-family: system-ui, sans-serif;
	font-size: 1rem;
	line-height: 1.5em;
}

nav ul {
	list-style-type: none;
	display: inline;
	margin: 0;
	padding: 0;
}

nav li {
	display: inline;
}

nav ul li ul li::before {
	content: ' > ';
}

h1 {
	font-size: 1.5rem;
	display: inline;
}

h2 {
	font-size: 1.4rem;
}

h3 {
	font-size: 1.1rem;
}

main > *:not(pre, form), footer {
	max-width: 40rem;
	margin-left: auto;
	margin-right: auto;
}

main > nav {
	max-width: 30rem;
}

header, footer {
	text-align: center;
	margin-top: 0.8rem;
}

p {
	margin-bottom: 1rem;
}

::selection {
	background-color: var(--foreground-color);
	color: var(--background-color);
}

abbr {
	text-decoration: underline 0.2em dotted;
}

pre {
	margin: 0;
}

a {
	color: var(--foreground-color);
	text-decoration: underline var(--svc-color) 0.2em;
}

a:hover {
	text-decoration-thickness: 0.25em;
}

a:active {
	text-decoration-thickness: 0.35em;
}

a[rel~=help]:before {
	content: 'ℹ️\202F';
	font-size: 0.8rem;
}

a[rel~=external]:after {
	content: '\202F↗';
	font-size: 0.8rem;
}

dt a {
	font-size: 1.1rem;
}

table {
	max-width: none;
	border-spacing: 1ch 0;
}

table.zone td:first-child {
	text-align: right;
}

s {
	font-size: 0.7rem;
	line-height: 1.2rem;
}