:root {
	color-scheme: light dark;
	--bg: #ffffff;
	--fg: #1b1b1f;
	--muted: #5c6068;
	--line: #e4e5e8;
	--panel: #f5f6f8;
	--accent: #2f55d4;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #121214;
		--fg: #e9e9ec;
		--muted: #a3a7af;
		--line: #2c2d31;
		--panel: #1c1d21;
		--accent: #8fa6ff;
	}
}

* {
	box-sizing: border-box;
}

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

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 17px;
	line-height: 1.7;
	overflow-wrap: break-word;
}

:lang(ko) {
	word-break: keep-all;
}

.site,
main {
	max-width: 44rem;
	margin: 0 auto;
	padding: 0 16px;
}

header.site {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
	padding-top: 16px;
	padding-bottom: 16px;
	border-bottom: 1px solid var(--line);
}

.brand {
	font-weight: 700;
	color: var(--fg);
	text-decoration: none;
}

footer.site {
	margin-top: 48px;
	padding-top: 16px;
	padding-bottom: 32px;
	border-top: 1px solid var(--line);
	color: var(--muted);
	font-size: 15px;
}

footer.site p {
	margin: 4px 0;
}

a {
	color: var(--accent);
	overflow-wrap: anywhere;
}

h1 {
	font-size: 28px;
	line-height: 1.3;
	margin: 32px 0 8px;
}

h2 {
	font-size: 21px;
	line-height: 1.4;
	margin: 40px 0 12px;
	scroll-margin-top: 16px;
}

h3 {
	font-size: 17px;
	margin: 24px 0 8px;
}

.meta {
	color: var(--muted);
	font-size: 15px;
	margin: 0 0 24px;
}

.summary,
.toc {
	background: var(--panel);
	border-radius: 12px;
	padding: 16px 20px;
	margin: 24px 0;
}

.summary h2,
.toc h2 {
	font-size: 17px;
	margin: 0 0 8px;
}

.toc ol {
	margin: 0;
	padding-left: 1.4em;
}

ul,
ol {
	padding-left: 1.4em;
}

li {
	margin: 4px 0;
}

dl.facts {
	display: grid;
	grid-template-columns: 9.5em 1fr;
	gap: 6px 16px;
	margin: 8px 0 20px;
	padding: 12px 16px;
	border: 1px solid var(--line);
	border-radius: 12px;
}

dl.facts dt {
	font-weight: 600;
	color: var(--muted);
}

dl.facts dd {
	margin: 0;
}

@media (max-width: 520px) {
	body {
		font-size: 16px;
	}

	dl.facts {
		grid-template-columns: 1fr;
		gap: 2px;
	}

	dl.facts dd {
		margin-bottom: 10px;
	}

	dl.facts dd:last-child {
		margin-bottom: 0;
	}
}

.doc-list {
	list-style: none;
	padding: 0;
}

.doc-list li {
	margin: 0 0 12px;
}

.doc-list a {
	display: block;
	padding: 14px 16px;
	border: 1px solid var(--line);
	border-radius: 12px;
	text-decoration: none;
	font-weight: 600;
}