:root {
	--ink: #16201b;
	--muted: #5b6b62;
	--line: #d9e0db;
	--paper: #f6f8f6;
	--surface: #ffffff;
	--code: #ecf1ed;
	--accent: #1f6f4a;
	--accent-strong: #17563a;
	--on-accent: #ffffff;
	--sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
	--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
}

@media (prefers-color-scheme: dark) {
	:root {
		--ink: #e3eae5;
		--muted: #9aaba1;
		--line: #2b3630;
		--paper: #101613;
		--surface: #161e1a;
		--code: #1c2621;
		--accent: #6cc596;
		--accent-strong: #93d8b3;
		--on-accent: #0c1a12;
	}
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font: 17px/1.6 var(--sans);
	-webkit-font-smoothing: antialiased;
}

a {
	color: var(--accent);
	text-underline-offset: 0.15em;
}

a:hover {
	color: var(--accent-strong);
}

code,
pre {
	font-family: var(--mono);
	font-size: 0.875em;
}

.container {
	max-width: 72rem;
	margin: 0 auto;
	padding: 0 1rem;
}

/* Header and footer */

.site-header {
	border-bottom: 1px solid var(--line);
	background: var(--surface);
}

.site-header .container {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.5rem 1.5rem;
	padding-top: 0.75rem;
	padding-bottom: 0.75rem;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	color: var(--ink);
	font-weight: 700;
	font-size: 1.1rem;
	text-decoration: none;
}

.site-header nav {
	display: flex;
	gap: 1.25rem;
	font-size: 0.95rem;
}

.site-header nav a {
	color: var(--muted);
	text-decoration: none;
}

.site-header nav a:hover,
.site-header nav a[aria-current='page'] {
	color: var(--ink);
}

.site-footer {
	margin-top: 4rem;
	border-top: 1px solid var(--line);
	padding: 1.5rem 0 2.5rem;
	color: var(--muted);
	font-size: 0.875rem;
}

.site-footer p {
	max-width: 44rem;
	margin: 0 0 0.5rem;
}

/* Buttons */

.btn {
	display: inline-flex;
	align-items: baseline;
	gap: 0.5rem;
	border: 1px solid var(--line);
	border-radius: 0.5rem;
	background: var(--surface);
	padding: 0.65rem 1.1rem;
	color: var(--ink);
	font-weight: 600;
	font-size: 0.95rem;
	text-decoration: none;
}

.btn:hover {
	border-color: var(--muted);
	color: var(--ink);
}

.btn-primary {
	border-color: transparent;
	background: var(--accent);
	color: var(--on-accent);
}

.btn-primary:hover {
	border-color: transparent;
	background: var(--accent-strong);
	color: var(--on-accent);
}

.btn[aria-disabled='true'] {
	opacity: 0.55;
	cursor: not-allowed;
}

.btn[aria-disabled='true']:hover {
	background: var(--accent);
}

.btn small {
	font-weight: 400;
	font-size: 0.8rem;
}

/* Home */

.hero {
	border-bottom: 1px solid var(--line);
	background: var(--surface);
	padding: 3.5rem 0;
}

.hero-grid {
	display: grid;
	gap: 2.5rem;
	align-items: center;
}

.hero h1 {
	margin: 0 0 1rem;
	font-size: clamp(2rem, 5vw, 3rem);
	line-height: 1.1;
	letter-spacing: -0.02em;
}

.lede {
	max-width: 36rem;
	margin: 0 0 1.75rem;
	color: var(--muted);
	font-size: 1.15rem;
}

.install {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
}

.fine {
	margin: 1rem 0 0;
	color: var(--muted);
	font-size: 0.875rem;
}

.tree {
	margin: 0;
	min-width: 0;
}

.tree pre {
	margin: 0;
	overflow-x: auto;
	border: 1px solid var(--line);
	border-radius: 0.75rem;
	background: var(--paper);
	padding: 1.25rem 1.5rem;
	font-size: 0.8rem;
	line-height: 1.7;
}

.tree span {
	color: var(--muted);
}

@media (min-width: 60rem) {
	.hero {
		padding: 5rem 0;
	}

	.hero-grid {
		grid-template-columns: 1.1fr 1fr;
		gap: 4rem;
	}
}

.home .prose {
	margin-top: 3rem;
}

.callout {
	max-width: 44rem;
	margin: 3rem 0 0;
	border: 1px solid var(--line);
	border-radius: 0.75rem;
	background: var(--surface);
	padding: 1.5rem 1.75rem 1.75rem;
}

.callout h2 {
	margin: 0 0 0.5rem;
	font-size: 1.25rem;
}

.callout p {
	margin: 0 0 1.25rem;
	color: var(--muted);
}

/* Long-form text */

.prose {
	max-width: 44rem;
	overflow-wrap: break-word;
}

.prose h1 {
	margin: 2.5rem 0 1rem;
	font-size: 2.25rem;
	line-height: 1.15;
	letter-spacing: -0.02em;
}

.prose h2 {
	margin: 3rem 0 1rem;
	font-size: 1.5rem;
	line-height: 1.25;
}

.prose h3 {
	margin: 2rem 0 0.75rem;
	font-size: 1.15rem;
}

.prose :is(h2, h3) a {
	color: inherit;
	text-decoration: none;
}

.prose :is(h2, h3) a:hover {
	text-decoration: underline;
}

.home .prose h2 {
	margin-top: 0;
	font-size: 1.75rem;
}

.prose :is(p, ul, ol) {
	margin: 0 0 1rem;
}

.prose li {
	margin: 0.35rem 0;
}

.prose li > :is(ul, ol) {
	margin-bottom: 0;
}

.prose :not(pre) > code {
	border-radius: 0.25rem;
	background: var(--code);
	padding: 0.1em 0.3em;
}

.prose pre {
	overflow-x: auto;
	margin: 0 0 1.25rem;
	border-radius: 0.5rem;
	background: var(--code);
	padding: 1rem 1.25rem;
	line-height: 1.5;
	tab-size: 2;
}

.prose blockquote {
	margin: 0 0 1rem;
	border-left: 3px solid var(--line);
	padding: 0.1rem 0 0.1rem 1rem;
	color: var(--muted);
}

.table-wrap {
	overflow-x: auto;
	margin: 0 0 1.25rem;
}

.prose table {
	border-collapse: collapse;
	font-size: 0.9rem;
	line-height: 1.45;
}

.prose :is(th, td) {
	border: 1px solid var(--line);
	padding: 0.45rem 0.65rem;
	text-align: left;
	vertical-align: top;
}

.prose th {
	background: var(--code);
}

.prose td:first-child code {
	white-space: nowrap;
}

/* Specification */

.spec-grid {
	display: grid;
	gap: 2rem;
	padding-top: 2rem;
}

.spec-grid main {
	min-width: 0;
}

.preface {
	max-width: 44rem;
	border: 1px solid var(--line);
	border-radius: 0.75rem;
	background: var(--surface);
	padding: 1.25rem 1.5rem;
	font-size: 0.95rem;
}

.preface p {
	margin: 0 0 0.75rem;
}

.preface p:last-child {
	margin-bottom: 0;
}

.toc {
	border: 1px solid var(--line);
	border-radius: 0.75rem;
	background: var(--surface);
	padding: 1rem 1.25rem;
	font-size: 0.875rem;
}

.toc p {
	margin: 0 0 0.5rem;
	font-weight: 700;
}

.toc ol {
	margin: 0 0 0.75rem;
	padding: 0;
	list-style: none;
	columns: 2 12rem;
}

.toc li {
	margin: 0.2rem 0;
	break-inside: avoid;
}

.toc a {
	color: var(--muted);
	text-decoration: none;
}

.toc a:hover {
	color: var(--ink);
}

.toc code {
	font-size: 0.95em;
}

.toc .toc-links {
	margin: 0;
	font-weight: 400;
}

.toc .toc-links a {
	color: var(--accent);
}

.spec .prose h1 {
	margin-top: 2rem;
}

.spec .prose :is(h2, h3) {
	scroll-margin-top: 1rem;
}

@media (min-width: 70rem) {
	.spec-grid {
		grid-template-columns: 15rem minmax(0, 1fr);
		gap: 3.5rem;
	}

	.toc {
		position: sticky;
		top: 1.5rem;
		align-self: start;
		max-height: calc(100vh - 3rem);
		overflow-y: auto;
		border: 0;
		background: none;
		padding: 0;
	}

	.toc ol {
		columns: 1;
	}
}