* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
	font-size: 0.95rem;
	line-height: 1.65;
	color: #202122;
	background: #f8f9fa;
}

.layout {
	display: flex;
	min-height: 100vh;
}

/* Sidebar */
.sidebar {
	width: 220px;
	flex-shrink: 0;
	background: #fff;
	border-right: 1px solid #c8ccd1;
	padding: 1.2rem 0;
	position: sticky;
	top: 0;
	height: 100vh;
	overflow-y: auto;
}

.sidebar-header {
	padding: 0 1rem 1rem;
	border-bottom: 1px solid #eaecf0;
	margin-bottom: 0.8rem;
}

.sidebar-header a {
	font-size: 1.1rem;
	font-weight: 700;
	color: #202122;
	text-decoration: none;
}

.sidebar-search {
	padding: 0 0.8rem;
	margin-bottom: 1rem;
}

.sidebar-search input {
	width: 100%;
	padding: 0.4rem 0.6rem;
	border: 1px solid #c8ccd1;
	border-radius: 2px;
	font-size: 0.85rem;
	font-family: inherit;
	background: #fff;
}

.sidebar-search input:focus {
	outline: none;
	border-color: #36c;
}

.search-results {
	display: none;
	padding: 0 0.8rem;
	margin-bottom: 1rem;
}

.search-results.active {
	display: block;
}

.search-results ul {
	list-style: none;
}

.search-results li {
	margin-bottom: 0.2rem;
}

.search-results a {
	display: block;
	padding: 0.25rem 0.4rem;
	font-size: 0.85rem;
	color: #36c;
	text-decoration: none;
	border-radius: 2px;
}

.search-results a:hover {
	background: #eaecf0;
}

.search-results .no-results {
	font-size: 0.82rem;
	color: #72777d;
	padding: 0.25rem 0.4rem;
}

.sidebar-nav {
	padding: 0 0.8rem;
}

.sidebar-nav h3 {
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: #72777d;
	margin-bottom: 0.4rem;
	padding: 0 0.4rem;
}

.sidebar-nav ul {
	list-style: none;
	margin-bottom: 1.2rem;
}

.sidebar-nav li a {
	display: block;
	padding: 0.2rem 0.4rem;
	font-size: 0.85rem;
	color: #36c;
	text-decoration: none;
	border-radius: 2px;
}

.sidebar-nav li a:hover {
	background: #eaecf0;
}

/* Content */
.content {
	flex: 1;
	min-width: 0;
	background: #fff;
	border-left: none;
}

.content-inner {
	max-width: 52rem;
	padding: 1.5rem 2rem 3rem;
}

/* Article heading */
.page-title {
	font-family: 'Linux Libertine', Georgia, 'Times New Roman', serif;
	font-size: 1.9rem;
	font-weight: 400;
	border-bottom: 1px solid #a2a9b1;
	padding-bottom: 0.25rem;
	margin-bottom: 0.5rem;
}

.page-meta {
	font-size: 0.82rem;
	color: #72777d;
	margin-bottom: 1.5rem;
}

/* Article content */
article h2 {
	font-family: 'Linux Libertine', Georgia, 'Times New Roman', serif;
	font-size: 1.4rem;
	font-weight: 400;
	border-bottom: 1px solid #eaecf0;
	padding-bottom: 0.2rem;
	margin-top: 1.6rem;
	margin-bottom: 0.4rem;
}

article h3 {
	font-size: 1.1rem;
	font-weight: 600;
	margin-top: 1.3rem;
	margin-bottom: 0.3rem;
}

article h4 {
	font-size: 1rem;
	font-weight: 600;
	margin-top: 1rem;
	margin-bottom: 0.3rem;
}

article p {
	margin-bottom: 0.8rem;
}

article ul, article ol {
	margin-bottom: 0.8rem;
	padding-left: 1.6rem;
}

article li {
	margin-bottom: 0.15rem;
}

a {
	color: #36c;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

a:visited {
	color: #795cb2;
}

code {
	font-family: 'Menlo', 'Consolas', 'Liberation Mono', monospace;
	font-size: 0.88em;
	background: #f8f9fa;
	border: 1px solid #eaecf0;
	padding: 0.1em 0.3em;
	border-radius: 2px;
}

pre {
	background: #f8f9fa;
	border: 1px solid #eaecf0;
	padding: 1rem;
	overflow-x: auto;
	margin-bottom: 0.8rem;
}

pre code {
	background: none;
	border: none;
	padding: 0;
}

blockquote {
	border-left: 3px solid #c8ccd1;
	padding: 0.2rem 0 0.2rem 1rem;
	color: #54595d;
	margin-bottom: 0.8rem;
}

img {
	max-width: 100%;
	height: auto;
	margin: 0.5rem 0;
}

hr {
	border: none;
	border-top: 1px solid #eaecf0;
	margin: 1.5rem 0;
}

/* Note list (index page) */
.note-list {
	list-style: none;
}

.note-list li {
	padding: 0.5rem 0;
	border-bottom: 1px solid #eaecf0;
	display: flex;
	justify-content: space-between;
	align-items: baseline;
}

.note-list li:last-child {
	border-bottom: none;
}

.note-date {
	font-size: 0.82rem;
	color: #72777d;
	font-family: 'Menlo', 'Consolas', monospace;
	flex-shrink: 0;
	margin-left: 1rem;
}

/* Backlinks */
.backlinks {
	margin-top: 2rem;
	padding-top: 1rem;
	border-top: 1px solid #eaecf0;
}

.backlinks h2 {
	font-size: 0.9rem;
	color: #72777d;
	font-weight: 400;
	border-bottom: none;
	margin-top: 0;
}

.backlinks ul {
	list-style: none;
	padding: 0;
}

.backlinks li {
	margin-bottom: 0.3rem;
}

/* Footer */
footer {
	margin-top: 3rem;
	padding-top: 0.8rem;
	border-top: 1px solid #eaecf0;
	font-size: 0.78rem;
	color: #72777d;
}

/* Mobile */
@media (max-width: 720px) {
	.layout {
		flex-direction: column;
	}

	.sidebar {
		width: 100%;
		height: auto;
		position: static;
		border-right: none;
		border-bottom: 1px solid #c8ccd1;
		padding: 0.8rem 0;
	}

	.sidebar-nav {
		display: none;
	}

	.content-inner {
		padding: 1rem;
	}

	.page-title {
		font-size: 1.5rem;
	}
}