:root {
	--bg: #f6f6f3;
	--panel: #ffffff;
	--fg: #14140f;
	--muted: #6a6a5f;
	--faint: #9a9a8d;
	--rule: #17170f;
	--rule-soft: #dcdcd3;
	--accent: #0f8a00;
	--accent-bright: #15b500;
	--accent-ink: #0c7a00;
	--accent-soft: #e7f7df;
	--code-bg: #f0f1ea;
	--error: #c02626;
	--go-fg: #ffffff;

	--mono:
		ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo,
		Consolas, monospace;
	--sans:
		ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica,
		Arial, sans-serif;
}

:root[data-theme="dark"] {
	--bg: #0c0d0a;
	--panel: #121410;
	--fg: #e8ebe2;
	--muted: #9aa090;
	--faint: #666c5e;
	--rule: #e8ebe2;
	--rule-soft: #262a20;
	--accent: #3ad11a;
	--accent-bright: #3ad11a;
	--accent-ink: #52dd33;
	--accent-soft: #14260d;
	--code-bg: #181b14;
	--error: #ff6b6b;
	--go-fg: #08210a;
}

@media (prefers-color-scheme: dark) {
	:root:not([data-theme="light"]) {
		--bg: #0c0d0a;
		--panel: #121410;
		--fg: #e8ebe2;
		--muted: #9aa090;
		--faint: #666c5e;
		--rule: #e8ebe2;
		--rule-soft: #262a20;
		--accent: #3ad11a;
		--accent-bright: #3ad11a;
		--accent-ink: #52dd33;
		--accent-soft: #14260d;
		--code-bg: #181b14;
		--error: #ff6b6b;
		--go-fg: #08210a;
	}
}

*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
html {
	-webkit-text-size-adjust: 100%;
}
body {
	background: var(--bg);
	color: var(--fg);
	font-family: var(--mono);
	font-size: 16px;
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
	padding: clamp(0.75rem, 2.5vw, 2.75rem);
}
.sans {
	font-family: var(--sans);
}
a {
	color: inherit;
}

.frame {
	max-width: 1300px;
	margin: 0 auto;
	background: var(--panel);
	border: 1px solid var(--rule);
}

.head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 1rem clamp(1.15rem, 2.5vw, 1.75rem);
	border-bottom: 1px solid var(--rule);
}
.brand {
	font-weight: 700;
	font-size: 1.1rem;
	letter-spacing: -0.01em;
	display: inline-flex;
	align-items: baseline;
	text-decoration: none;
	color: var(--fg);
}
.brand .brand-path {
	color: var(--muted);
	font-weight: 400;
}
.brand .caret {
	display: inline-block;
	width: 0.6em;
	height: 1em;
	margin-left: 0.15em;
	background: var(--accent-bright);
	transform: translateY(0.12em);
	animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
	50% {
		opacity: 0;
	}
}

.brand-wrap {
	position: relative;
	display: inline-flex;
	/*align-items: center;*/
	justify-content: center;
	align-items: baseline;
	gap: 0.45rem;
	/*border: 5px solid green;*/
}

.tree-toggle {
	align-self: center;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 0;
	background: transparent;
	color: var(--muted);
	font: inherit;
	line-height: 0;
	cursor: pointer;
	padding: 0;
	transition:
		transform 0.15s ease,
		color 0.15s ease;
}
.tree-toggle kbd {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 20px;
	height: 20px;
	min-width: 0;
	padding: 0;
	font-size: 0.8rem;
	line-height: 1;
}

.tree-toggle:hover {
	color: var(--fg);
}
.tree-toggle:focus-visible {
	outline: 1.5px solid var(--accent-ink);
	outline-offset: 2px;
	border-radius: 3px;
}

.tree-toggle[aria-expanded="true"] {
	transform: rotate(90deg);
	color: var(--accent-ink);
}

.tree-menu {
	position: absolute;
	top: calc(100% + 0.45rem);
	left: -0.2rem;
	z-index: 40;
	background: var(--panel);
	border: 1px solid var(--rule);
	padding: 0.4rem;
	font-family: var(--mono);
	font-size: 0.82rem;
	font-weight: 400;
	letter-spacing: 0;
	line-height: 1.35;
	box-shadow: 0 12px 34px rgba(0, 0, 0, 0.18);
	width: 280px;
}
.tree-menu[hidden] {
	display: none;
}
.tree-menu .tree-root {
	color: var(--faint);
	padding: 0.18rem 0.4rem;
}
.tree-menu code {
	background: transparent;
	border: 0;
	padding: 0;
	font-size: inherit;
}
.tree-menu a {
	display: block;
	text-decoration: none;
	color: var(--muted);
	padding: 0.18rem 0.4rem;
}
.tree-menu a .tw {
	color: var(--faint);
	white-space: pre;
}
.tree-menu a:hover {
	color: var(--fg);
	background: var(--code-bg);
}
.tree-menu a.current {
	color: var(--accent-ink);
}
.tree-menu a.current .tw {
	color: var(--accent);
}
.head-right {
	display: flex;
	align-items: center;
	gap: 1.1rem;
	font-size: 0.85rem;
}
.head-right a {
	color: var(--muted);
	text-decoration: none;
}
.head-right a:hover {
	color: var(--fg);
}
.flyout-wrap {
	position: relative;
}
.ghost-btn {
	border: 1px solid var(--rule);
	background: transparent;
	color: var(--fg);
	font: inherit;
	font-size: 0.82rem;
	padding: 0.22rem 0.6rem;
	cursor: pointer;
}
.ghost-btn:hover {
	background: var(--fg);
	color: var(--panel);
}
.flyout {
	position: absolute;
	right: 0;
	top: calc(100% + 0.45rem);
	width: 214px;
	background: var(--panel);
	border: 1px solid var(--rule);
	padding: 0.4rem;
	z-index: 30;
	display: none;
}
.flyout.open {
	display: block;
}
.flyout h4 {
	font-size: 0.7rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--faint);
	padding: 0.3rem 0.4rem 0.45rem;
}
.flyout .sc {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.3rem 0.4rem;
	font-size: 0.86rem;
}
.flyout .sc:hover {
	background: var(--code-bg);
}
kbd {
	font-family: var(--mono);
	display: inline-block;
	min-width: 1.4em;
	text-align: center;
	border: 1px solid currentColor;
	padding: 0 0.28rem;
	font-size: 0.74rem;
	line-height: 1.35;
	opacity: 0.85;
}
.theme {
	display: inline-flex;
	gap: 0.6rem;
}
.theme button {
	border: 0;
	background: transparent;
	color: var(--faint);
	font: inherit;
	font-size: 0.82rem;
	cursor: pointer;
	padding: 0;
}
.theme button:hover {
	color: var(--fg);
}
.theme button.active {
	color: var(--accent-ink);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.foot {
	border-top: 1px solid var(--rule);
	padding: 1rem clamp(1.15rem, 2.5vw, 1.75rem);
	display: flex;
	flex-wrap: wrap;
	gap: 0.3rem 0.85rem;
	font-size: 0.82rem;
	color: var(--muted);
}
.foot a {
	color: var(--muted);
	text-decoration: none;
}
.foot a:hover {
	color: var(--fg);
}
.foot .sep {
	color: var(--faint);
}

@media (max-width: 600px) {
	.head {
		flex-wrap: wrap;
		row-gap: 0.55rem;
	}
	.head-right {
		flex-wrap: wrap;
		justify-content: flex-end;
		margin-left: auto;
		gap: 0.45rem 0.9rem;
		font-size: 0.8rem;
	}
	.brand {
		font-size: 1rem;
	}
	.brand .brand-path {
		display: none;
	}
	.flyout-wrap {
		display: none;
	}
}

@media (max-width: 450px) {
	.theme {
		flex-direction: column;
		align-items: flex-end;
		gap: 0.15rem;
	}
}

@media (max-width: 350px) {
	.head-right {
		flex-direction: column;
		align-items: flex-end;
		gap: 0.25rem;
	}
}