:root {
	color-scheme: light dark;
	/* ───── 能力軸色彩系統（全站一致語言）───── */
	--ax-memory:        #06b6d4;  /* Memory    — 青藍 */
	--ax-security:      #ef4444;  /* Security  — 深紅 */
	--ax-orchestration: #8b5cf6;  /* Orchestration — 紫 */
	--ax-interface:     #ec4899;  /* Interface — 粉紅 */
	--ax-infra:         #f97316;  /* Infrastructure — 橘 */
	--ax-governance:    #eab308;  /* Governance — 金 */
	--ax-default:       #64748b;  /* 未知       — 灰藍 */
	/* ───── 演化階段色彩系統 ───── */
	--stage-explore:    #a855f7;  /* 探索 — 紫 */
	--stage-converge:   #3b82f6;  /* 收斂 — 藍 */
	--stage-expand:     #10b981;  /* 擴張 — 翠綠 */
	--stage-govern:     #f59e0b;  /* 治理 — 琥珀 */
	/* ───── 淺色底：暖白 + 可疊加色帶（保留可讀白，避免死灰）───── */
	--bg: #faf7fb;
	--bg-elevated: #ffffff;
	--surface-rose: #fff1f3;
	--surface-violet: #f5f3ff;
	--surface-amber: #fffbeb;
	--surface-mint: #f0fdfa;
	--stripe-pink: rgba(244, 114, 182, 0.09);
	--blob-rose: rgba(251, 113, 133, 0.22);
	--blob-violet: rgba(167, 139, 250, 0.2);
	--blob-amber: rgba(251, 191, 36, 0.14);
	--text: #0f0a14;
	--text-muted: #4b3f52;
	--border-soft: rgba(190, 24, 93, 0.1);
	--border-strong: rgba(190, 24, 93, 0.18);
	/* 連結偏靛；品牌熱色偏橘紅（與舊版活力一致） */
	--accent: #4f46e5;
	--accent-hot: #ea580c;
	--accent-soft: rgba(79, 70, 229, 0.12);
	--brand-rose: #be123c;
	--brand-warm: #c2410c;
	--glow-indigo: rgba(99, 102, 241, 0.32);
	--glow-cyan: rgba(6, 182, 212, 0.18);
	--code-bg: #0c0e16;
	--code-text: #e8ecff;
	--hero-text-strong: #070a14;
	--hero-text-muted: #4b5168;
	--hero-text-soft: #5a6178;
	--hero-quiet: #6b7288;
	--hero-panel: rgba(255, 255, 255, 0.55);
	--hero-panel-strong: rgba(255, 255, 255, 0.82);
	--shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
	--shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(15, 23, 42, 0.04);
	--shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
	--shadow-glow: 0 0 0 1px rgba(99, 102, 241, 0.12), 0 12px 40px rgba(99, 102, 241, 0.15);
	--radius: 14px;
	--font-sans: "Noto Sans TC", system-ui, sans-serif;
	--font-mono: "JetBrains Mono", ui-monospace, monospace;
	--content-max: min(48rem, 100%);
	--article-padding-x: clamp(1rem, 4vw, 2rem);
	--page-max: 72rem;
	--focus-ring: 2px solid color-mix(in srgb, var(--accent) 65%, transparent);
	--focus-offset: 2px;
}

[data-theme='dark'] {
	--bg: #07050c;
	--bg-elevated: #100a14;
	--surface-rose: rgba(190, 24, 93, 0.18);
	--surface-violet: rgba(76, 29, 149, 0.28);
	--surface-amber: rgba(180, 83, 9, 0.16);
	--surface-mint: rgba(6, 95, 70, 0.18);
	--stripe-pink: rgba(244, 114, 182, 0.04);
	--blob-rose: rgba(251, 113, 133, 0.12);
	--blob-violet: rgba(167, 139, 250, 0.12);
	--blob-amber: rgba(251, 191, 36, 0.08);
	--text: #f4f0f8;
	--text-muted: #b4a8c4;
	--border-soft: rgba(244, 114, 182, 0.12);
	--border-strong: rgba(244, 114, 182, 0.22);
	--accent: #a78bfa;
	--accent-hot: #fb923c;
	--accent-soft: rgba(167, 139, 250, 0.15);
	--brand-rose: #fb7185;
	--brand-warm: #fdba74;
	--glow-indigo: rgba(129, 140, 248, 0.25);
	--glow-cyan: rgba(34, 211, 238, 0.15);
	--code-bg: #0a0c14;
	--code-text: #e4e9ff;
	--hero-text-strong: #f4f6ff;
	--hero-text-muted: #a8b2d4;
	--hero-text-soft: #949ec4;
	--hero-quiet: #7c86a8;
	--hero-panel: rgba(18, 22, 38, 0.65);
	--hero-panel-strong: rgba(24, 28, 48, 0.88);
	--shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
	--shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
	--shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
	--shadow-glow: 0 0 0 1px rgba(129, 140, 248, 0.2), 0 12px 48px rgba(79, 70, 229, 0.2);
}

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

html {
	font-family: var(--font-sans);
	background-color: var(--bg);
	/* 斜紋 + 角落光暈（舊版「有顏色的排頁」節奏，低對比不干擾閱讀） */
	background-image:
		repeating-linear-gradient(
			-12deg,
			transparent 0,
			transparent 12px,
			var(--stripe-pink) 12px,
			var(--stripe-pink) 13px
		),
		radial-gradient(ellipse 75% 50% at 0% 0%, var(--blob-rose), transparent 52%),
		radial-gradient(ellipse 65% 55% at 100% 0%, var(--blob-violet), transparent 50%),
		radial-gradient(ellipse 55% 45% at 100% 100%, var(--blob-amber), transparent 48%),
		radial-gradient(ellipse 90% 55% at 50% -15%, var(--glow-indigo), transparent 55%),
		radial-gradient(ellipse 50% 35% at 0% 40%, rgba(234, 88, 12, 0.06), transparent 45%);
	color: var(--text);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}

[data-theme='dark'] html {
	background-image:
		radial-gradient(ellipse 85% 50% at 50% -10%, rgba(99, 102, 241, 0.22), transparent 55%),
		radial-gradient(ellipse 60% 40% at 95% 8%, rgba(6, 182, 212, 0.12), transparent 50%),
		radial-gradient(ellipse 45% 30% at 5% 25%, rgba(234, 88, 12, 0.08), transparent 45%);
}

body {
	margin: 0;
	min-height: 100vh;
}

a {
	color: var(--accent);
	text-decoration-thickness: 1px;
	text-underline-offset: 0.15em;
	transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
	opacity: 0.9;
}

:focus-visible {
	outline: var(--focus-ring);
	outline-offset: var(--focus-offset);
}

@media (prefers-reduced-motion: reduce) {
	html:focus-within {
		scroll-behavior: auto;
	}
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

.site-header {
	position: sticky;
	top: 0;
	z-index: 40;
	backdrop-filter: blur(16px) saturate(1.25);
	background: linear-gradient(
		180deg,
		color-mix(in srgb, var(--surface-rose) 72%, #fff) 0%,
		color-mix(in srgb, #fff 88%, var(--surface-violet)) 100%
	);
	border-bottom: 1px solid color-mix(in srgb, var(--brand-rose) 12%, var(--border-soft));
	box-shadow: var(--shadow-sm);
}

.site-header__inner {
	position: relative;
	max-width: var(--page-max);
	margin: 0 auto;
	padding: 0.75rem var(--article-padding-x);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
	flex-wrap: nowrap;
}

.brand {
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	color: inherit;
	text-decoration: none;
	font-weight: 800;
	letter-spacing: 0.03em;
}

.brand > span:first-of-type {
	font-size: 1.08rem;
	color: var(--hero-text-strong);
}

.brand-meta {
	font-family: var(--font-mono);
	font-size: 0.62rem;
	font-weight: 600;
	color: var(--text-muted);
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.nav-toggle {
	display: none;
	flex-shrink: 0;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 2.65rem;
	height: 2.65rem;
	padding: 0;
	border: 1px solid var(--border-soft);
	background: var(--hero-panel-strong);
	border-radius: 12px;
	cursor: pointer;
	transition: background 0.15s ease, border-color 0.15s ease;
}

.nav-toggle:hover {
	border-color: color-mix(in srgb, var(--accent) 35%, var(--border-soft));
}

.nav-toggle__bar {
	display: block;
	width: 1.15rem;
	height: 2px;
	margin: 0 auto;
	background: var(--text);
	border-radius: 1px;
	transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-header--nav-open .nav-toggle__bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.site-header--nav-open .nav-toggle__bar:nth-child(2) {
	opacity: 0;
}

.site-header--nav-open .nav-toggle__bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

.nav {
	display: flex;
	flex-wrap: wrap;
	gap: 0.25rem 0.35rem;
	align-items: center;
	justify-content: flex-end;
	flex: 1;
	min-width: 0;
}

.nav a {
	color: var(--text-muted);
	font-weight: 600;
	font-size: clamp(0.78rem, 2vw, 0.82rem);
	text-decoration: none;
	padding: 0.4rem 0.6rem;
	border-radius: 999px;
	transition: background 0.18s ease, color 0.18s ease;
}

.nav a:hover {
	color: var(--text);
	background: color-mix(in srgb, var(--accent) 10%, transparent);
}

@media (max-width: 899px) {
	.nav-toggle {
		display: flex;
		order: 2;
	}

	.site-header__inner {
		flex-wrap: wrap;
	}

	.brand {
		order: 0;
		flex: 1;
		min-width: 0;
	}

	.theme-bar {
		order: 3;
	}

	.nav {
		display: none;
		order: 4;
		flex: 1 1 100%;
		flex-direction: column;
		align-items: stretch;
		justify-content: flex-start;
		padding: 0.35rem 0 0.75rem;
		margin: 0 calc(-1 * var(--article-padding-x));
		padding-left: var(--article-padding-x);
		padding-right: var(--article-padding-x);
		border-top: 1px solid var(--border-soft);
		background: color-mix(in srgb, var(--bg) 96%, transparent);
		backdrop-filter: blur(12px);
	}

	.site-header--nav-open .nav {
		display: flex;
	}

	.nav a {
		padding: 0.55rem 0.75rem;
		border-radius: 10px;
	}
}

@media (min-width: 900px) {
	.nav-toggle {
		display: none !important;
	}

	.nav {
		justify-content: center;
		flex: 1;
	}
}

.theme-bar {
	display: flex;
	gap: 0.35rem;
	align-items: center;
}

.theme-bar button {
	border: 1px solid var(--border-soft);
	background: var(--hero-panel-strong);
	color: var(--text);
	border-radius: 999px;
	padding: 0.3rem 0.6rem;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 600;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease;
}

.theme-bar button[aria-pressed='true'] {
	border-color: color-mix(in srgb, var(--accent) 55%, transparent);
	background: var(--accent-soft);
	color: var(--text);
}

.page {
	max-width: var(--page-max);
	margin: 0 auto;
	padding: 2rem var(--article-padding-x) 4rem;
}

/* 首頁：hero 需要 full-width breakout，移除橫向與頂部 padding，改由各子區塊自行管理 */
.page.home {
	padding-top: 0;
	padding-left: 0;
	padding-right: 0;
	overflow-x: clip;
}

/* 勿套用首頁專用 hero（由 home.css 控制） */
.page:not(.home) .hero-block h1 {
	margin: 0 0 0.6rem;
	font-size: clamp(1.75rem, 4vw, 2.35rem);
	font-weight: 800;
	letter-spacing: -0.03em;
	color: var(--hero-text-strong);
}

.page:not(.home) .hero-block p {
	margin: 0;
	color: var(--hero-text-muted);
	line-height: 1.75;
	max-width: 52ch;
}

/* Blog 統計列 */
.blog-index-stats {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	margin: -0.5rem 0 1.5rem;
	font-size: 0.82rem;
	color: var(--hero-text-muted);
}

/* 分頁 */
.pagination-nav {
	display: flex;
	align-items: center;
	gap: 1rem;
	flex-wrap: wrap;
	margin-top: 2rem;
	padding-top: 1.25rem;
	border-top: 1px solid var(--border-soft);
}

.pagination-nav__btn {
	display: inline-flex;
	align-items: center;
	padding: 0.5rem 1rem;
	border-radius: 10px;
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 85%, transparent);
	text-decoration: none;
	color: var(--hero-text-muted);
	font-weight: 600;
	font-size: 0.88rem;
	transition: border-color 0.18s ease, background 0.18s ease;
}

.pagination-nav__btn:hover {
	border-color: var(--border-strong);
	background: var(--hero-panel-strong);
	color: var(--text);
}

.pagination-nav__info {
	color: var(--hero-quiet);
	font-size: 0.88rem;
}

/* Post header — 演化階段色帶 */
.post-header--stage-探索 { border-left: 3px solid var(--stage-explore);  padding-left: 1.2rem; }
.post-header--stage-收斂 { border-left: 3px solid var(--stage-converge); padding-left: 1.2rem; }
.post-header--stage-擴張 { border-left: 3px solid var(--stage-expand);   padding-left: 1.2rem; }
.post-header--stage-治理 { border-left: 3px solid var(--stage-govern);   padding-left: 1.2rem; }

/* 閱讀進度條 */
#reading-progress {
	position: fixed;
	top: 0;
	left: 0;
	height: 3px;
	width: 0%;
	z-index: 9999;
	background: linear-gradient(90deg, var(--brand-rose), var(--accent-hot), var(--accent));
	box-shadow: 0 0 10px rgba(234, 88, 12, 0.4);
	transition: width 0.12s linear;
	pointer-events: none;
}

/* 文章閱讀佈局：正文 + 右側 TOC */
.post-reading-layout {
	max-width: var(--page-max);
	margin: 0 auto;
	padding: 0 var(--article-padding-x) 4rem;
}

.post-reading-layout--toc {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: 2rem;
	align-items: start;
}

@media (min-width: 1060px) {
	.post-reading-layout--toc {
		grid-template-columns: minmax(0, 1fr) 230px;
	}
}

/* TOC — 側欄（桌面） */
.post-toc--sidebar {
	display: none;
}

@media (min-width: 1060px) {
	.post-toc--sidebar {
		display: block;
		grid-column: 2;
		grid-row: 1 / 999;
	}

	.post-toc--sidebar .post-toc__inner {
		position: sticky;
		top: 5.5rem;
		max-height: calc(100vh - 7rem);
		overflow-y: auto;
		padding: 0.9rem;
		border-radius: var(--radius);
		border: 1px solid var(--border-soft);
		background: color-mix(in srgb, var(--hero-panel-strong) 88%, transparent);
		backdrop-filter: blur(10px);
	}
}

.post-toc__heading {
	margin: 0 0 0.65rem;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--hero-quiet);
}

.post-toc__list {
	margin: 0;
	padding: 0;
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
}

.post-toc__item--depth-3 .post-toc__link {
	padding-left: 1rem;
	font-size: 0.74rem;
}

.post-toc__link {
	display: block;
	color: var(--hero-text-muted);
	text-decoration: none;
	font-size: 0.79rem;
	line-height: 1.45;
	padding: 0.22rem 0.35rem;
	border-radius: 7px;
	transition: background 0.15s ease, color 0.15s ease;
}

.post-toc__link:hover,
.post-toc__link--active {
	background: color-mix(in srgb, var(--accent) 10%, transparent);
	color: var(--hero-text-strong);
}

/* TOC — 摺疊式（行動） */
.post-toc--mobile {
	margin: 0 0 1.5rem;
	padding: 0.75rem 1rem;
	border-radius: var(--radius);
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 80%, transparent);
}

@media (min-width: 1060px) {
	.post-toc--mobile {
		display: none;
	}
}

.post-toc__toggle {
	display: flex;
	align-items: center;
	gap: 0.45rem;
	background: none;
	border: none;
	cursor: pointer;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--hero-text-muted);
	padding: 0;
}

.post-toc__count {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 1.4em;
	height: 1.4em;
	padding: 0 0.3em;
	border-radius: 999px;
	background: var(--accent-soft);
	color: var(--accent);
	font-size: 0.72rem;
	font-weight: 700;
}

.post-toc--mobile .post-toc__list {
	margin-top: 0.65rem;
}

/* 系列導航 */
.post-series-nav {
	margin: 2.25rem 0 0;
	padding: 1.1rem 1.2rem;
	border-radius: var(--radius);
	border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--border-soft));
	background: color-mix(in srgb, var(--surface-violet) 40%, var(--bg-elevated));
}

.post-series-nav__label {
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--hero-quiet);
	margin-bottom: 0.85rem;
}

.post-series-nav__label a {
	color: var(--accent);
}

.post-series-nav__links {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.85rem;
}

@media (max-width: 540px) {
	.post-series-nav__links {
		grid-template-columns: 1fr;
	}
}

.post-series-nav__prev,
.post-series-nav__next {
	display: flex;
	flex-direction: column;
	gap: 0.2rem;
	text-decoration: none;
	padding: 0.75rem 0.85rem;
	border-radius: 12px;
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 75%, transparent);
	transition: border-color 0.18s ease, background 0.18s ease;
}

.post-series-nav__next {
	text-align: right;
}

.post-series-nav__prev:hover,
.post-series-nav__next:hover {
	border-color: color-mix(in srgb, var(--accent) 35%, var(--border-soft));
	background: var(--hero-panel-strong);
}

.post-series-nav__dir {
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.06em;
	color: var(--accent);
}

.post-series-nav__title {
	font-size: 0.87rem;
	font-weight: 600;
	color: var(--hero-text-strong);
	line-height: 1.4;
}

/* 相關文章 */
.post-related {
	margin: 2.25rem 0 0;
}

.post-related__heading {
	margin: 0 0 1rem;
	font-size: 1rem;
	font-weight: 700;
	letter-spacing: -0.01em;
	color: var(--hero-text-strong);
}

.post-related__grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 0.85rem;
}

@media (max-width: 720px) {
	.post-related__grid {
		grid-template-columns: 1fr;
	}
}

.post-card--related {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
}

.post-card--related h3 {
	margin: 0;
	font-size: 0.93rem;
	color: var(--hero-text-strong);
	font-weight: 700;
	line-height: 1.4;
}

.post-card__desc {
	margin: 0;
	font-size: 0.8rem;
	color: var(--hero-text-muted);
	line-height: 1.55;
}

.post-list {
	display: grid;
	gap: 0.85rem;
	margin-top: 1.5rem;
}

.post-card {
	display: block;
	padding: 1rem 1.1rem;
	border-radius: var(--radius);
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 88%, transparent);
	backdrop-filter: blur(10px);
	box-shadow: var(--shadow-sm);
	text-decoration: none;
	color: inherit;
	transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
	border-color: color-mix(in srgb, var(--accent) 35%, var(--border-strong));
	transform: translateY(-2px);
	box-shadow: var(--shadow-md);
}

.post-card__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	font-size: 0.78rem;
	color: var(--hero-quiet);
	margin-bottom: 0.45rem;
}

.post-card h2 {
	margin: 0;
	font-size: 1.05rem;
	color: var(--hero-text-strong);
	font-weight: 700;
}

/* 文章頁 */
.post-article {
	max-width: var(--page-max);
	margin: 0 auto;
	padding: 1.25rem var(--article-padding-x) 3.5rem;
}

.post-header--hero {
	margin-bottom: 2rem;
	padding: 1.5rem 1.35rem 1.75rem;
	border-radius: 20px;
	border: 1px solid color-mix(in srgb, var(--brand-rose) 14%, var(--border-soft));
	background: linear-gradient(
		155deg,
		var(--surface-rose) 0%,
		#fff 42%,
		var(--surface-violet) 100%
	);
	box-shadow: var(--shadow-sm);
}

.post-article__eyebrow {
	margin: 0 0 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--accent);
}

.post-title {
	margin: 0 0 0.65rem;
	font-size: clamp(1.55rem, 4.2vw, 2.35rem);
	font-weight: 800;
	letter-spacing: -0.035em;
	line-height: 1.18;
	color: #881337;
	text-shadow: 0 1px 0 rgba(255, 255, 255, 0.9);
}

[data-theme='dark'] .post-title {
	color: #fecdd3;
	text-shadow: 0 0 28px rgba(251, 113, 133, 0.35);
}

.post-deck {
	margin: 0 0 1.15rem;
	font-size: clamp(1rem, 2.8vw, 1.12rem);
	line-height: 1.65;
	color: var(--hero-text-muted);
	max-width: 52ch;
}

.post-meta-row {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem 1rem;
	align-items: center;
	font-size: clamp(0.8rem, 2.2vw, 0.88rem);
	color: var(--hero-quiet);
}

.post-meta-row__item {
	white-space: nowrap;
}

.post-meta-row__signal {
	font-family: var(--font-mono);
	font-size: 0.78rem;
	color: var(--text-muted);
}

.post-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	margin: 1rem 0 0;
	padding: 0;
	list-style: none;
}

.post-tag {
	display: inline-flex;
	padding: 0.28rem 0.65rem;
	border-radius: 999px;
	font-size: 0.78rem;
	font-weight: 600;
	text-decoration: none;
	color: var(--text);
	background: color-mix(in srgb, var(--accent) 9%, transparent);
	border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border-soft));
	transition: background 0.15s ease, border-color 0.15s ease;
}

.post-tag:hover {
	background: color-mix(in srgb, var(--accent) 16%, transparent);
	border-color: color-mix(in srgb, var(--accent) 40%, var(--border-soft));
}

.post-intent {
	margin: 1.35rem 0 0;
	padding: 0.85rem 1rem;
	font-size: clamp(0.84rem, 2.4vw, 0.92rem);
	line-height: 1.65;
	color: var(--hero-text-muted);
	background: linear-gradient(
		90deg,
		color-mix(in srgb, var(--surface-violet) 85%, #fff) 0%,
		color-mix(in srgb, var(--surface-rose) 50%, #fff) 100%
	);
	border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border-soft));
	border-radius: 12px;
	border-left: 4px solid var(--accent-hot);
	max-width: 62ch;
}

.post-prose {
	max-width: var(--content-max);
	margin: 0 auto;
	font-size: clamp(1.02rem, 2.8vw, 1.09rem);
	line-height: 1.82;
	color: var(--text);
	letter-spacing: 0.01em;
}

.post-prose > h2:first-child,
.post-prose > h3:first-child {
	margin-top: 0.5rem;
}

.post-prose h2,
.post-prose h3 {
	margin-top: 2rem;
	margin-bottom: 0.7rem;
	line-height: 1.32;
	font-weight: 700;
	letter-spacing: -0.02em;
	color: var(--hero-text-strong);
}

.post-prose h2 {
	font-size: clamp(1.2rem, 3.2vw, 1.45rem);
}

.post-prose h3 {
	font-size: clamp(1.05rem, 2.8vw, 1.2rem);
}

.post-prose pre {
	background: var(--code-bg);
	color: var(--code-text);
	padding: 1rem 1.15rem;
	border-radius: 12px;
	overflow-x: auto;
	font-size: clamp(0.8rem, 2.2vw, 0.88rem);
	box-shadow: var(--shadow-sm);
}

.post-prose code {
	font-family: var(--font-mono);
	font-size: 0.9em;
}

.post-prose p {
	margin: 1rem 0;
}

.post-prose hr {
	margin: 2rem 0;
	border: none;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
}

/* 首則 blockquote：由 Markdown 寫成的觀測元資料 → 卡片化 */
.post-prose > blockquote:first-of-type {
	margin: 1.25rem 0 1.75rem;
	padding: 1.05rem 1.2rem;
	border-left: none;
	border-radius: 14px;
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 88%, transparent);
	backdrop-filter: blur(10px);
	box-shadow: var(--shadow-sm);
	color: var(--text);
	font-size: 0.92em;
}

.post-prose > blockquote:first-of-type p {
	margin: 0.35rem 0;
}

.post-prose blockquote:not(:first-of-type) {
	margin: 1.15rem 0;
	padding: 0.75rem 0 0.75rem 1rem;
	border-left: 3px solid color-mix(in srgb, var(--accent) 55%, var(--border-strong));
	color: var(--text-muted);
	background: transparent;
}

.post-prose .katex-display {
	margin: 1rem 0;
	overflow-x: auto;
}

.post-prose pre[class*='language-'] {
	background: var(--code-bg);
	color: var(--code-text);
}

.post-prose code[class*='language-'] {
	background: transparent;
	color: inherit;
	font-size: inherit;
}

.site-footer {
	margin-top: 4rem;
	padding: 2.25rem 1.35rem;
	border-top: 1px solid color-mix(in srgb, var(--brand-rose) 12%, var(--border-soft));
	background: linear-gradient(
		0deg,
		color-mix(in srgb, var(--surface-violet) 35%, var(--bg)) 0%,
		color-mix(in srgb, var(--surface-rose) 25%, var(--bg)) 100%
	);
	backdrop-filter: blur(12px);
}

.site-footer__inner {
	max-width: var(--page-max);
	margin: 0 auto;
	display: grid;
	gap: 1rem;
	font-size: 0.88rem;
	color: var(--text-muted);
}

.footer-links {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem 2rem;
}

.footer-links a {
	color: var(--text-muted);
	font-weight: 600;
	text-decoration: none;
}

.footer-links a:hover {
	color: var(--text);
}

/* About：世界觀與邊界 */
.about-page__hero .about-page__lead {
	color: var(--hero-text-muted);
	font-size: 1.05rem;
	line-height: 1.8;
	max-width: 52ch;
}

.about-section {
	margin-top: 2.5rem;
}

.about-section h2 {
	font-size: 1.28rem;
	margin: 0 0 0.75rem;
	color: var(--hero-text-strong);
}

.about-prose p {
	margin: 0.85rem 0;
	color: var(--text);
	line-height: 1.78;
	max-width: 52ch;
}

.about-list {
	margin: 0.5rem 0 0;
	padding-left: 1.25rem;
	line-height: 1.75;
	max-width: 52ch;
	color: var(--text);
}

.about-closing {
	margin-top: 2.5rem;
	font-weight: 600;
	color: var(--hero-text-strong);
	max-width: 52ch;
	line-height: 1.65;
}

/* 首頁 Hero 樣式全部由 home.css 管理（extraStylesheets 載入）；此處不重複定義，避免衝突 */

/* ============================================================
   演化視覺語言：能力軸 / 演化階段 — 全站共用
   ============================================================ */

/* 能力軸 chip */
.ax-chip {
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
	padding: 0.18rem 0.55rem;
	border-radius: 999px;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	border: 1px solid currentColor;
	opacity: 0.88;
	line-height: 1;
}

.ax-chip::before {
	content: '';
	display: inline-block;
	width: 5px;
	height: 5px;
	border-radius: 50%;
	background: currentColor;
	flex-shrink: 0;
}

.ax-Memory        { color: var(--ax-memory);        background: color-mix(in srgb, var(--ax-memory) 12%, transparent); }
.ax-Security      { color: var(--ax-security);      background: color-mix(in srgb, var(--ax-security) 10%, transparent); }
.ax-Orchestration { color: var(--ax-orchestration); background: color-mix(in srgb, var(--ax-orchestration) 12%, transparent); }
.ax-Interface     { color: var(--ax-interface);     background: color-mix(in srgb, var(--ax-interface) 10%, transparent); }
.ax-Infrastructure { color: var(--ax-infra);        background: color-mix(in srgb, var(--ax-infra) 10%, transparent); }
.ax-Governance    { color: var(--ax-governance);    background: color-mix(in srgb, var(--ax-governance) 12%, transparent); }
.ax-default       { color: var(--ax-default);       background: color-mix(in srgb, var(--ax-default) 10%, transparent); }

/* 演化階段 badge */
.stage-badge {
	display: inline-flex;
	align-items: center;
	gap: 0.3rem;
	padding: 0.22rem 0.6rem;
	border-radius: 999px;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.06em;
	border: 1px solid currentColor;
	opacity: 0.92;
}

.stage-badge::before {
	content: '';
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background: currentColor;
	animation: stage-pulse 2.4s ease-in-out infinite;
	flex-shrink: 0;
}

@keyframes stage-pulse {
	0%, 100% { opacity: 1; transform: scale(1); }
	50% { opacity: 0.45; transform: scale(0.7); }
}

@media (prefers-reduced-motion: reduce) {
	.stage-badge::before { animation: none; }
}

.stage-探索 { color: var(--stage-explore);  background: color-mix(in srgb, var(--stage-explore) 11%, transparent); }
.stage-收斂 { color: var(--stage-converge); background: color-mix(in srgb, var(--stage-converge) 11%, transparent); }
.stage-擴張 { color: var(--stage-expand);   background: color-mix(in srgb, var(--stage-expand) 11%, transparent); }
.stage-治理 { color: var(--stage-govern);   background: color-mix(in srgb, var(--stage-govern) 11%, transparent); }

/* 能力軸邊框色（用於卡片左邊線）*/
.card-axis-Memory        { --card-axis-color: var(--ax-memory); }
.card-axis-Security      { --card-axis-color: var(--ax-security); }
.card-axis-Orchestration { --card-axis-color: var(--ax-orchestration); }
.card-axis-Interface     { --card-axis-color: var(--ax-interface); }
.card-axis-Infrastructure { --card-axis-color: var(--ax-infra); }
.card-axis-Governance    { --card-axis-color: var(--ax-governance); }

/* 演化信號線：文章頁頭部左側色帶 */
.post-stage-bar {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	flex-wrap: wrap;
	margin-bottom: 0.85rem;
}

.post-axes-row {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	margin-top: 0.85rem;
}

/* ── 增強版 post-card（全站文章清單）──────────────── */
.post-card {
	display: block;
	padding: 0;
	border-radius: var(--radius);
	border: 1px solid var(--border-soft);
	background: color-mix(in srgb, var(--hero-panel-strong) 88%, transparent);
	backdrop-filter: blur(10px);
	box-shadow: var(--shadow-sm);
	text-decoration: none;
	color: inherit;
	transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
	overflow: hidden;
	border-left: 3px solid var(--card-axis-color, var(--border-soft));
}

.post-card:hover {
	border-color: color-mix(in srgb, var(--card-axis-color, var(--accent)) 45%, var(--border-strong));
	transform: translateY(-2px);
	box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--card-axis-color, var(--accent)) 15%, transparent);
}

.post-card__inner {
	padding: 0.95rem 1.1rem;
}

.post-card__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	font-size: 0.75rem;
	color: var(--hero-quiet);
	margin-bottom: 0.45rem;
	align-items: center;
}

.post-card h2 {
	margin: 0 0 0.45rem;
	font-size: 1.02rem;
	color: var(--hero-text-strong);
	font-weight: 700;
	line-height: 1.4;
}

.post-card__desc {
	margin: 0 0 0.55rem;
	font-size: 0.83rem;
	color: var(--hero-text-muted);
	line-height: 1.6;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.post-card__axes {
	display: flex;
	flex-wrap: wrap;
	gap: 0.3rem;
}

/* ── 演化頁面：時間軸樣式 ──────────────────────────── */
.ev-timeline {
	position: relative;
	display: grid;
	gap: 0;
}

.ev-timeline::before {
	content: '';
	position: absolute;
	left: 1.1rem;
	top: 0.5rem;
	bottom: 0;
	width: 2px;
	background: linear-gradient(
		180deg,
		var(--stage-explore) 0%,
		var(--stage-converge) 35%,
		var(--stage-expand) 65%,
		var(--stage-govern) 100%
	);
	opacity: 0.35;
}

.ev-entry {
	display: grid;
	grid-template-columns: 2.5rem 1fr;
	gap: 0 1rem;
	padding-bottom: 0.85rem;
	position: relative;
}

.ev-entry__dot {
	width: 1.1rem;
	height: 1.1rem;
	border-radius: 50%;
	margin-top: 0.22rem;
	margin-left: 0.5rem;
	border: 2px solid currentColor;
	background: var(--bg-elevated);
	flex-shrink: 0;
	position: relative;
	z-index: 1;
	box-shadow: 0 0 8px currentColor;
	transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ev-entry:hover .ev-entry__dot {
	transform: scale(1.35);
	box-shadow: 0 0 14px currentColor;
}

.ev-entry__card {
	display: block;
	text-decoration: none;
	color: inherit;
	padding: 0.85rem 1rem;
	border-radius: 12px;
	border: 1px solid var(--border-soft);
	border-left-width: 3px;
	border-left-color: var(--card-axis-color, var(--border-soft));
	background: color-mix(in srgb, var(--hero-panel-strong) 82%, transparent);
	backdrop-filter: blur(8px);
	transition: border-color 0.2s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.ev-entry__card:hover {
	transform: translateX(4px);
	border-color: color-mix(in srgb, var(--card-axis-color, var(--accent)) 40%, var(--border-strong));
	box-shadow: var(--shadow-sm), -3px 0 0 var(--card-axis-color, var(--accent));
}

.ev-entry__head {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.45rem;
	margin-bottom: 0.4rem;
}

.ev-entry__date {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: var(--hero-quiet);
}

.ev-entry__title {
	margin: 0 0 0.45rem;
	font-size: 0.98rem;
	font-weight: 700;
	color: var(--hero-text-strong);
	line-height: 1.38;
}

.ev-entry__axes {
	display: flex;
	flex-wrap: wrap;
	gap: 0.3rem;
}

/* Stage filter bar */
.ev-stage-filters {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin: 0.5rem 0 1.25rem;
}

.ev-stage-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	border: 1.5px solid currentColor;
	background: transparent;
	border-radius: 999px;
	padding: 0.3rem 0.75rem;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 700;
	cursor: pointer;
	opacity: 0.55;
	transition: opacity 0.18s ease, background 0.18s ease;
}

.ev-stage-btn::before {
	content: '';
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: currentColor;
}

.ev-stage-btn:hover,
.ev-stage-btn.active {
	opacity: 1;
	background: color-mix(in srgb, currentColor 12%, transparent);
}

.ev-stage-btn.active { opacity: 1; }

.ev-stage-ALL    { color: var(--hero-text-muted); }
.ev-stage-探索    { color: var(--stage-explore); }
.ev-stage-收斂    { color: var(--stage-converge); }
.ev-stage-擴張    { color: var(--stage-expand); }
.ev-stage-治理    { color: var(--stage-govern); }

/* signal tag (inside ev-entry) */
.ev-signal {
	font-family: var(--font-mono);
	font-size: 0.66rem;
	padding: 0.12rem 0.45rem;
	border-radius: 6px;
	background: color-mix(in srgb, var(--hero-quiet) 10%, transparent);
	color: var(--hero-quiet);
	border: 1px solid color-mix(in srgb, var(--hero-quiet) 22%, transparent);
}

/* signal: color by type */
.ev-signal--能力突破 { color: var(--stage-expand);   background: color-mix(in srgb, var(--stage-expand) 10%, transparent); }
.ev-signal--風險修復 { color: var(--ax-security);     background: color-mix(in srgb, var(--ax-security) 10%, transparent); }
.ev-signal--系統強化 { color: var(--ax-governance);   background: color-mix(in srgb, var(--ax-governance) 10%, transparent); }
.ev-signal--基準觀測 { color: var(--hero-quiet);      background: color-mix(in srgb, var(--hero-quiet) 10%, transparent); }