:root {
	--font-size: 12pt;
	--line-height: 1.625;
	--height-unit: calc(var(--font-size) * var(--line-height));
	--width-unit: 1ch;
	--padding-left: calc(1 * var(--width-unit));
	--padding-right: calc(1 * var(--width-unit));
	--padding-top: calc(1 * var(--height-unit));
	--padding-bottom: calc(1 * var(--height-unit));
	--gap-vertical: calc(1 * var(--height-unit));
	--gap-horizontal: calc(2 * var(--width-unit));
	--column-width: clamp(32ch, 72ch, calc(100vw - var(--gap-horizontal) - var(--padding-left) - var(--padding-right) - var(--width-unit)));
	font: var(--font-size)/var(--line-height) monospace;
	color-scheme: light dark;
}

/* reset */
* {
	box-sizing: border-box;
}
body {
	color: light-dark(#000000, #ffffff);
	background-color: light-dark(#ffffff, #000000);
	margin: 0;
}
h1, h2, h3, h4, h5, h6 {
	font: inherit;
}
h1 {
	font-weight: bold;
    margin: var(--height-unit) var(--height-unit) 0 0;
}
h2, h3, h4, h5, h6 {
	font-style: italic;
    margin: var(--height-unit) var(--height-unit) 0 0;
}
p {
    margin: var(--height-unit) 0 0 0;
	hyphens: auto;
}
hr {
	border: none;
	text-align: center;
}
hr:after {
	content: "---";
}

/* main layout */
body {
	padding: var(--height-unit) var(--width-unit);
	width: 100vw;
	height: 100vh;
}

/* secondary grid */
body>main {
	display: grid;
	grid-auto-flow: column;
	grid-template-columns: repeat(auto-fit, var(--column-width));
	grid-gap: var(--gap-horizontal);
	overflow-x: scroll;
	scroll-snap-type: x proximity;
}
body>main>article {
	scroll-snap-align: start;
	scroll-snap-stop: always;
	width: var(--column-width);
	overflow-y: scroll;
}