body {
	width: min(65ch, 92.5vw);
	margin: 0 auto;
	padding: 1em 0.25em;

	font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
	line-height: 1.3;
}

body > header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 1em;
	padding: 0.25em 0;
}

body > header > h1 {
	font-size: 1.15rem;
	font-weight: 500;
}

body > header > h1 > a {
	color: inherit;
	text-decoration: none;
}

body > header > h1 > a:hover {
	text-decoration: underline;
}

body > header > h1 > span#separator {
	font-size: 0.875em;
	font-weight: normal;
	color: #666;
}

body > header > h1 > span#subdir {
	font-size: 0.875em;
	font-weight: normal;
	color: #666;
}

body > header > nav > ul {
	display: flex;
	justify-content: space-around;
	gap: 1.5em;
	padding: 0;
	list-style: none;
}

body > header > nav a {
	font-size: 0.9rem;
	color: #475f85;
}

body > header > nav a:hover {
	text-decoration: underline;
}

main {
	display: flex;
	flex-direction: column;
	gap: 2em;
}

@media screen and (min-width: 800px) {
	body {
		width: 75ch;
		padding: 0.5em;
		line-height: 1.4;
	}
}

@media screen and (min-width: 1200px) {
	body {
		line-height: 1.5;
	}
}