:root {
	--measure: 640px;
	--color-bg: oklch(0.99 0.003 84);
	--color-text: oklch(0.23 0.005 67);
	--color-muted: oklch(0.45 0.01 67);
	--color-border: oklch(0.92 0.007 80);
	--color-link: oklch(0.23 0.005 67);
	--font-serif:
		'Noto Serif TC', 'Noto Serif JP', 'Noto Serif SC', 'PingFang TC', 'Microsoft JhengHei', Georgia, serif;
	--space-1: 0.5rem;
	--space-2: 1rem;
	--space-3: 1.75rem;
	--space-4: 3rem;
	--space-5: 5rem;

	--text-1: 0.85rem;
	--text-2: 0.95rem;

	--icon-up: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8v12z"/></svg>');
	--icon-compact: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none"><path d="M3 5H11" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/><path d="M3 12H16" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/><path d="M3 19H21" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>');
	--icon-menu: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none"><path d="M3 5H21" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/><path d="M3 12H21" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/><path d="M3 19H21" stroke="%23000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>');
}

* {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	color-scheme: light;
	font-size: 120%;
	@media (width < 768px) {
		font-size: 100%;
	}
}

body {
	margin: 0;
	background: var(--color-bg);
	color: var(--color-text);
	font-family: var(--font-serif);
	font-size: 19px;
	line-height: 1.75;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;

	@media (width < 768px) {
		font-size: 17px;
	}
}

a {
	color: var(--color-link);
	text-decoration-color: var(--color-border);
	text-underline-offset: 3px;
	&:visited {
		color: var(--color-link);
	}
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
	display: block;
	vertical-align: middle;
}

img,
video {
	max-width: 100%;
	height: auto;
	display: block;
	margin: var(--space-3) auto;
}

table {
	display: block;
	overflow: auto;
}

table {
	width: 100%;
	margin: var(--space-3) 0;
	border-collapse: collapse;
	font-size: calc((var(--text-1) + var(--text-2)) / 2);
}

th,
td {
	padding: var(--space-1) var(--space-2);
	text-align: left;
	border-bottom: 1.2px solid var(--color-border);
	vertical-align: top;
}

th {
	font-weight: 700;
	color: var(--color-text);
	border-bottom: 1.2px solid var(--color-border);
}

td {
	color: var(--color-text);
}

tbody tr:hover {
	background: color-mix(in oklch, var(--color-border) 40%, transparent);
}

p {
	margin: 0 0 var(--space-3);
}

blockquote {
	margin: var(--space-3) 0;
	padding-left: var(--space-3);
	border-left: 2px solid var(--color-muted);
	color: var(--color-muted);
	font-style: italic;
}

pre {
	background: #f4f2ee;
	padding: var(--space-2);
	overflow-x: auto;
	font-size: 0.85rem;
	line-height: 1.6;
}

:not(pre) > code {
	background-color: #f4f2ee;
	font-weight: normal;
	padding: 1.6px;
	padding-inline: 4px;
	border-radius: 0.5em;
	border: 1.25px solid oklch(0.697 0.153 272.01);
	font-size: 0.875em;
	line-height: 1.4;
}

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

hr {
	border: none;
	border-top: 1px solid var(--color-border);
	margin: var(--space-4) 0;
}

:where(h2) {
	font-size: 1.7rem;
	line-height: 2rem;
	margin-top: 3rem;
	margin-bottom: 0.8rem;
}

:where(h3) {
	font-size: 1.4rem;
	margin-top: 2.5rem;
	margin-bottom: 0.8rem;
}

:where(h4) {
	font-size: 1.2rem;
	margin-top: 2rem;
	margin-bottom: 0.8rem;
}

:where(h5) {
	font-size: 1rem;
	margin-top: 1.8rem;
	margin-bottom: 0.8rem;
}

:where(h6) {
	font-size: 1rem;
	font-style: italic;
	font-weight: 400;
	margin-top: 2.5rem;
	margin-bottom: 0.8rem;
}

:where(h1, h2, h3, h4, h5, h6) {
	.heading-anchor {
		color: currentColor;
		text-decoration: none;
	}

	.heading-anchor::before {
		display: inline-block;
		content: '#';
		opacity: 0;
		text-decoration: none;
		transition: opacity 150ms ease;
	}

	&:hover .heading-anchor::before,
	& .heading-anchor:focus::before {
		opacity: 1;
	}
}

/* ---------- 版面骨架 ---------- */

.site-header,
.site-footer,
main#swup {
	max-width: var(--measure);
	margin-left: auto;
	margin-right: auto;
	padding-left: var(--space-2);
	padding-right: var(--space-2);
}

.site-header {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: var(--space-2);
	padding-top: var(--space-4);
	padding-bottom: var(--space-4);

	@media (width < 768px) {
		padding-top: var(--space-3);
		padding-bottom: var(--space-3);
	}
}

.site-title {
	font-size: 1.05rem;
	font-weight: 700;
	letter-spacing: 0.02em;
	color: var(--color-text);
	text-decoration: none;
}

.site-nav {
	display: flex;
	gap: var(--space-3);
}

.site-nav a {
	color: var(--color-muted);
	text-decoration: none;
	font-size: var(--text-2);
	&[aria-current] {
		color: var(--color-text);
		font-weight: 600;
	}
}

.site-nav a:hover {
	color: var(--color-text);
}

main#swup {
	min-height: 50vh;
	padding-bottom: var(--space-5);
}

.site-footer {
	padding-top: var(--space-4);
	padding-bottom: var(--space-4);
	border-top: 1px solid var(--color-border);
	color: var(--color-text);
	font-size: var(--text-1);
}

.site-footer p {
	margin: 0;
}

/* ---------- 文章列表 ---------- */

.page-title {
	font-size: 1.6rem;
	margin: 0 0 var(--space-4);
}

.intro {
	margin-bottom: var(--space-4);
	color: var(--color-muted);
}

/* ---------- 精簡模式切換按鈕 ---------- */

.compact-toggle {
	display: inline-flex;
	align-items: center;
	gap: var(--space-1);
	margin-bottom: var(--space-3);
	padding: 0;
	border: none;
	background: none;
	color: var(--color-muted);
	font-family: inherit;
	font-size: var(--text-2);
	line-height: 1;
	cursor: pointer;
	text-decoration: none;
}

.compact-toggle::before {
	content: '';
	width: 1rem;
	height: 1rem;
	flex-shrink: 0;
	-webkit-mask: var(--icon-menu) center/1rem 1rem no-repeat;
	mask: var(--icon-menu) center/1rem 1rem no-repeat;
	background-color: var(--color-muted);
	transition: background-color 0.15s ease-out;
}

.compact-toggle[aria-pressed='true']::before {
	-webkit-mask-image: var(--icon-compact);
	mask-image: var(--icon-compact);
}

.compact-toggle:hover {
	color: var(--color-text);
}

.compact-toggle:hover::before {
	background-color: var(--color-text);
}

.compact-toggle[aria-pressed='true'] {
	color: var(--color-text);
}

.compact-toggle[aria-pressed='true']::before {
	background-color: var(--color-text);
}

/* 精簡模式：隱藏摘要，日期與標題同行，縮小間距，方便快速掃視 */
.post-list:has([href*='/series/']),
.post-list:has([href*='/tags/']),
.post-list:has([href*='/jottings/']),
.post-list.is-compact {
	.post-list-item {
		padding: var(--space-1) 0;
		display: flex;
		align-items: baseline;
		gap: var(--space-2);
		border: none;
	}

	.post-list-item a {
		font-size: 1rem;
		font-weight: 400;
	}

	.post-list-item time {
		margin-top: 0;
		flex-shrink: 0;
		order: -1;
		width: 8em;
	}

	.post-list-summary {
		display: none;
	}

	@media (width < 768px) {
		.post-list-item {
			flex-direction: column;
			align-items: flex-start;
			gap: 0;
		}

		.post-list-item time {
			order: 0;
			width: auto;
		}
	}
}

.post-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.post-list-item {
	padding: var(--space-3) 0;
	border-bottom: 1px solid var(--color-border);
}

.post-list-item:first-child {
	padding-top: 0;
}

.post-list-item {
	a:not(.post-list-summary *) {
		color: var(--color-text);
		font-size: 1.15rem;
		font-weight: 700;
	}
	a {
		color: currentColor;
	}
	a:hover {
		text-decoration-color: currentColor;
	}
}

.post-list-item time {
	display: block;
	margin-top: var(--space-1);
	color: var(--color-muted);
	font-size: var(--text-1);
}

.post-list-summary {
	margin: var(--space-1) 0 0;
	color: var(--color-muted);
	font-size: var(--text-2);
	overflow: hidden;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
}

/* ---------- 文章內頁 ---------- */

.post-header {
	margin-bottom: var(--space-4);
}

.breadcrumbs {
	font-size: var(--text-1);
}

.post-title {
	font-size: 1.9rem;
	line-height: 1.35;
	margin: 0 0 var(--space-1);
	@media (width < 768px) {
		font-size: 1.5rem;
	}
}

.post-date {
	color: var(--color-muted);
	font-size: var(--text-1);
}

.prose {
	a:hover {
		text-decoration-color: currentColor;
	}
}

.post-nav {
	margin-top: var(--space-5);
	padding-top: var(--space-3);
	border-top: 1px solid var(--color-border);
	display: flex;
	justify-content: space-between;
	gap: var(--space-1);
}

.post-nav-link {
	color: var(--color-muted);
	text-decoration: none;
	font-size: var(--text-2);
	max-width: 45%;
}

.post-nav-link:hover {
	color: var(--color-text);
}

.post-nav-prev {
	text-align: start;
}

.post-nav-next {
	text-align: end;
}

/* ---------- 分頁 ---------- */

.pagination {
	margin-top: var(--space-5);
	padding-top: var(--space-3);
	border-top: 1px solid var(--color-border);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-3);
}

.pagination-link {
	color: var(--color-muted);
	text-decoration: none;
	font-size: var(--text-2);
}

.pagination-link:hover {
	color: var(--color-text);
}

.pagination-link.is-disabled {
	color: var(--color-border);
	pointer-events: none;
}

.pagination-status {
	color: var(--color-muted);
	font-size: var(--text-1);
	font-variant-numeric: tabular-nums;
}

.pagination-prev {
	text-align: left;
}

.pagination-next {
	text-align: right;
}

@media (width < 768px) {
	.pagination {
		flex-wrap: wrap;
		justify-content: center;
		text-align: center;
		gap: var(--space-2);
	}
	.pagination-status {
		order: -1;
		width: 100%;
	}
}

/* scroll to top */
.scroll-top {
	position: fixed;
	right: var(--space-3);
	bottom: var(--space-3);
	width: 2.2rem;
	height: 2.2rem;
	border: 1px solid var(--color-border);
	border-radius: 50%;
	background: var(--color-bg);
	cursor: pointer;
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition:
		opacity 0.25s ease-out,
		transform 0.25s ease-out,
		visibility 0s linear 0.25s;
	z-index: 100;
}

.scroll-top::after {
	content: '';
	position: absolute;
	inset: 0;
	-webkit-mask: var(--icon-up) center/1.2rem 1.2rem no-repeat;
	mask: var(--icon-up) center/1.2rem 1.2rem no-repeat;
	background-color: var(--color-muted);
	transition: background-color 0.15s ease-out;
}

.scroll-top.is-visible {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
	transition:
		opacity 0.25s ease-out,
		transform 0.25s ease-out,
		visibility 0s linear 0s;
}

@media (prefers-reduced-motion: reduce) {
	.scroll-top {
		transition:
			opacity 1ms linear,
			visibility 0s linear 1ms;
	}
	.scroll-top.is-visible {
		transition:
			opacity 1ms linear,
			visibility 0s linear 0s;
	}
}

/* 動畫 */
/* .transition-fade {
	transition:
		filter 0.2s ease-out,
		opacity 0.2s ease-out;
	opacity: 1;
}

html.is-animating .transition-fade {
	opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
	.transition-fade,
	html.is-animating .transition-fade {
		transition: none;
		opacity: 1;
	}
} */
:root {
	--adm-bg: #ffffff;
	--adm-text: #000000;
	--adm-code-bg: #f5f5f5;
	--adm-code-text: #24292e;
	--adm-blockquote-border: #e0e0e0;
	--adm-header-bg-opacity: 0.1;

	--adm-note: oklch(0.48 0.02 251);
	--adm-tip: oklch(0.52 0.14 148);
	--adm-info: oklch(0.54 0.19 257);
	--adm-caution: oklch(0.63 0.26 29);
	--adm-warning: oklch(0.73 0.19 52);
	--adm-danger: oklch(0.63 0.26 29);
	--adm-important: oklch(0.56 0.21 295);
}
/* prettier-ignore */
.admonition {
	--adm-color: var(--adm-note);
	--adm-type-header: var(--adm-color);

	&.tip { --adm-color: var(--adm-tip); }
	&.info { --adm-color: var(--adm-info); }
	&.caution { --adm-color: var(--adm-caution); }
	&.warning { --adm-color: var(--adm-warning); }
	&.danger { --adm-color: var(--adm-danger); }
	&.important { --adm-color: var(--adm-important); }

	/* 客製化 header 顏色 */
	/* &.tip { --adm-type-header: red; } */
}
.admonition {
	margin: 1rem 0;
	border-radius: 4px;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
	transition: box-shadow 0.3s ease;
	overflow: hidden;
	position: relative;

	border-left: 4px solid var(--adm-color);
	background-color: oklch(from var(--adm-color) l c h / var(--adm-header-bg-opacity));
	--adm-type-color: var(--adm-color);
	--adm-type-header: var(--adm-color-header, var(--adm-color));
}
.admonition-header {
	padding: 0.5rem 1rem;
	display: flex;
	align-items: center;
	font-weight: 600;
	font-size: 1.1rem;
	border-radius: 4px 4px 0 0;
	transition: color 0.3s ease;
	position: relative;
	z-index: 1;
	color: var(--adm-type-header, var(--adm-type-color));
}
.admonition-header svg {
	width: 1.1em;
	height: 1.1em;
	margin-right: 0.5rem;
	fill: currentColor;
	flex-shrink: 0;
	transition: fill 0.3s ease;
}
.admonition-header span {
	flex-grow: 1;
}
.admonition-content {
	padding: 1rem;
	border-radius: 0 0 4px 4px;
	transition:
		background-color 0.3s ease,
		color 0.3s ease;
	position: relative;
	background-color: var(--adm-bg);
	color: var(--adm-text);
}
.admonition-content p {
	margin-top: 0;
	margin-bottom: 0.75rem;
}
.admonition-content ul,
.admonition-content ol {
	margin-top: 0;
	margin-bottom: 0.75rem;
	padding-left: 1.5rem;
}
.admonition-content blockquote {
	margin: 0 0 0.75rem 0;
	padding-left: 1rem;
	border-left: 3px solid var(--adm-blockquote-border);
	font-style: italic;
	transition:
		border-color 0.3s ease,
		color 0.3s ease;
	color: inherit;
}
.admonition-content code:not(pre > code) {
	padding: 0.2em 0.4em;
	border-radius: 3px;
	font-size: 0.9em;
	transition:
		background-color 0.3s ease,
		color 0.3s ease;
	background-color: var(--adm-code-bg);
	color: var(--adm-code-text);
}
.admonition-content pre {
	margin: 0 0 0.75rem 0;
	padding: 0.8rem 1rem;
	border-radius: 3px;
	overflow-x: auto;
	transition: background-color 0.3s ease;
	background-color: var(--adm-code-bg);
}
.admonition-content pre code {
	background-color: transparent !important;
	color: var(--adm-code-text);
	padding: 0;
	font-size: inherit;
	border-radius: 0;
}
.admonition-content > *:last-child {
	margin-bottom: 0;
}
.admonition--headless .admonition-content {
	border-radius: 4px;
}
.admonition > summary {
	list-style: none; /* For Firefox */
}
.admonition > summary::-webkit-details-marker {
	/* For Chrome, Safari, Edge */
	display: none;
}
.admonition > summary {
	cursor: pointer;
	position: relative;
	z-index: 2;
}
.admonition > summary::after {
	content: '>'; /* Use a simple chevron character */
	display: inline-block; /* Allows transforms and margins */
	font-weight: bold;
	margin-left: 0.6em; /* Adjust spacing as needed */
	transition: transform 0.2s ease-in-out; /* Smooth rotation */
	transform-origin: center; /* Rotate around the center */
	color: currentColor;
}
.admonition[open] > summary::after {
	transform: rotate(90deg); /* Rotate the chevron down */
}
/* Generated using: hugo gen chromastyles --style=github */

/* Background */ .bg { background-color:#f7f7f7; }
/* PreWrapper */ .chroma { background-color:#f7f7f7;-webkit-text-size-adjust:none; }
/* Error */ .chroma .err { color:#f6f8fa;background-color:#82071e }
/* LineLink */ .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
/* LineTableTD */ .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
/* LineTable */ .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
/* LineHighlight */ .chroma .hl { background-color:#dedede }
/* LineNumbersTable */ .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* LineNumbers */ .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* Line */ .chroma .line { display:flex; }
/* Keyword */ .chroma .k { color:#cf222e }
/* KeywordConstant */ .chroma .kc { color:#cf222e }
/* KeywordDeclaration */ .chroma .kd { color:#cf222e }
/* KeywordNamespace */ .chroma .kn { color:#cf222e }
/* KeywordPseudo */ .chroma .kp { color:#cf222e }
/* KeywordReserved */ .chroma .kr { color:#cf222e }
/* KeywordType */ .chroma .kt { color:#cf222e }
/* NameAttribute */ .chroma .na { color:#1f2328 }
/* NameClass */ .chroma .nc { color:#1f2328 }
/* NameConstant */ .chroma .no { color:#0550ae }
/* NameDecorator */ .chroma .nd { color:#0550ae }
/* NameEntity */ .chroma .ni { color:#6639ba }
/* NameLabel */ .chroma .nl { color:#900;font-weight:bold }
/* NameNamespace */ .chroma .nn { color:#24292e }
/* NameOther */ .chroma .nx { color:#1f2328 }
/* NameTag */ .chroma .nt { color:#0550ae }
/* NameBuiltin */ .chroma .nb { color:#6639ba }
/* NameBuiltinPseudo */ .chroma .bp { color:#6a737d }
/* NameVariable */ .chroma .nv { color:#953800 }
/* NameVariableClass */ .chroma .vc { color:#953800 }
/* NameVariableGlobal */ .chroma .vg { color:#953800 }
/* NameVariableInstance */ .chroma .vi { color:#953800 }
/* NameVariableMagic */ .chroma .vm { color:#953800 }
/* NameFunction */ .chroma .nf { color:#6639ba }
/* NameFunctionMagic */ .chroma .fm { color:#6639ba }
/* LiteralString */ .chroma .s { color:#0a3069 }
/* LiteralStringAffix */ .chroma .sa { color:#0a3069 }
/* LiteralStringBacktick */ .chroma .sb { color:#0a3069 }
/* LiteralStringChar */ .chroma .sc { color:#0a3069 }
/* LiteralStringDelimiter */ .chroma .dl { color:#0a3069 }
/* LiteralStringDoc */ .chroma .sd { color:#0a3069 }
/* LiteralStringDouble */ .chroma .s2 { color:#0a3069 }
/* LiteralStringEscape */ .chroma .se { color:#0a3069 }
/* LiteralStringHeredoc */ .chroma .sh { color:#0a3069 }
/* LiteralStringInterpol */ .chroma .si { color:#0a3069 }
/* LiteralStringOther */ .chroma .sx { color:#0a3069 }
/* LiteralStringRegex */ .chroma .sr { color:#0a3069 }
/* LiteralStringSingle */ .chroma .s1 { color:#0a3069 }
/* LiteralStringSymbol */ .chroma .ss { color:#032f62 }
/* LiteralNumber */ .chroma .m { color:#0550ae }
/* LiteralNumberBin */ .chroma .mb { color:#0550ae }
/* LiteralNumberFloat */ .chroma .mf { color:#0550ae }
/* LiteralNumberHex */ .chroma .mh { color:#0550ae }
/* LiteralNumberInteger */ .chroma .mi { color:#0550ae }
/* LiteralNumberIntegerLong */ .chroma .il { color:#0550ae }
/* LiteralNumberOct */ .chroma .mo { color:#0550ae }
/* Operator */ .chroma .o { color:#0550ae }
/* OperatorWord */ .chroma .ow { color:#0550ae }
/* OperatorReserved */ .chroma .or { color:#0550ae }
/* Punctuation */ .chroma .p { color:#1f2328 }
/* Comment */ .chroma .c { color:#57606a }
/* CommentHashbang */ .chroma .ch { color:#57606a }
/* CommentMultiline */ .chroma .cm { color:#57606a }
/* CommentSingle */ .chroma .c1 { color:#57606a }
/* CommentSpecial */ .chroma .cs { color:#57606a }
/* CommentPreproc */ .chroma .cp { color:#57606a }
/* CommentPreprocFile */ .chroma .cpf { color:#57606a }
/* GenericDeleted */ .chroma .gd { color:#82071e;background-color:#ffebe9 }
/* GenericEmph */ .chroma .ge { color:#1f2328 }
/* GenericInserted */ .chroma .gi { color:#116329;background-color:#dafbe1 }
/* GenericOutput */ .chroma .go { color:#1f2328 }
/* GenericUnderline */ .chroma .gl { text-decoration:underline }
/* TextWhitespace */ .chroma .w { color:#fff }