:root {
	color-scheme: light dark;
}

* {
	box-sizing: border-box;
}

body,
h1,
h2,
h3,
p {
	margin: 0;
}

.shell {
	width: min(100% - 2 * var(--space-lg), 65rem);
	margin-inline: auto;
}

.skip-link {
	position: absolute;
	inset: var(--space-sm) auto auto var(--space-sm);
	transform: translateY(-200%);
	background: var(--surface-page);
	padding: var(--space-xs) var(--space-sm);
}

.skip-link:focus {
	transform: none;
}

.site-header,
.site-header nav,
.brand,
.section-heading {
	display: flex;
	align-items: center;
}

.site-header {
	justify-content: space-between;
	gap: var(--space-md);
	padding-block: var(--space-xl);
	border-bottom: var(--border-width-light) solid var(--border-color-default);
}

.site-header nav {
	flex-wrap: wrap;
	justify-content: end;
	gap: var(--space-sm) var(--space-lg);
	font-size: var(--text-sm);
}

.brand {
	color: inherit;
	gap: var(--space-sm);
	flex: none;
}

.brand-wordmark {
	display: block;
	width: 4rem;
	aspect-ratio: 458 / 76;
	background: currentColor;
	mask: url("/assets/wordmark.svg") center / contain no-repeat;
}

.content {
	padding-block: var(--space-2xl);
}

.overview {
	display: grid;
	grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
	grid-template-areas: "intro art" "flow art";
	grid-template-rows: auto 1fr;
	gap: var(--space-xl) var(--space-2xl);
}

.intro {
	grid-area: intro;
}

.intro p {
	max-width: 52ch;
	margin-top: var(--space-sm);
}

.hero-art {
	grid-area: art;
	display: grid;
	isolation: isolate;
	place-items: center;
	align-self: stretch;
	min-width: 0;
	padding: var(--space-lg);
}

.hero-art::before,
.hero-art img {
	grid-area: 1 / 1;
}

.hero-art::before {
	width: 100%;
	aspect-ratio: 480 / 314;
	background: var(--text-secondary);
	mask: url("/assets/grid.svg") center / contain no-repeat;
	opacity: 0.42;
	content: "";
}

.hero-art img {
	display: block;
	z-index: 1;
	width: min(100%, 17rem);
	height: auto;
}

.flow {
	grid-area: flow;
}

.section-heading {
	justify-content: space-between;
	gap: var(--space-sm);
	margin-bottom: var(--space-sm);
}

.steps {
	margin: 0;
	padding: 0;
	list-style: none;
	border: var(--border-width-light) solid var(--border-color-default);
	border-radius: var(--radius-container);
}

.steps li {
	display: grid;
	grid-template-columns: auto minmax(0, 1fr);
	gap: var(--space-md);
	padding: var(--space-md);
}

.steps li + li {
	border-top: var(--border-width-light) solid var(--border-color-default);
}

.step-number {
	color: var(--text-secondary);
	font-family: var(--font-mono);
	font-size: var(--text-sm);
}

.steps h3 {
	font-size: var(--text-base);
	line-height: var(--text-base-leading);
	font-weight: var(--weight-semibold);
}

.steps p {
	margin-top: var(--space-2xs);
	color: var(--text-secondary);
}

.site-footer {
	padding-block: var(--space-lg);
	border-top: var(--border-width-light) solid var(--border-color-default);
	color: var(--text-secondary);
	font-size: var(--text-sm);
}

.not-found {
	display: grid;
	justify-items: start;
	gap: var(--space-sm);
	padding-block: var(--space-2xl);
}

@media (max-width: 40rem) {
	.overview {
		grid-template-columns: minmax(0, 1fr);
		grid-template-areas: "intro" "art" "flow";
		grid-template-rows: auto;
	}

	.hero-art img {
		width: min(100%, 12rem);
	}
}