:root {
	--guide-max: 1000px;
}

html {
	scroll-behavior: smooth;
}

.guide-app {
	width: 100vw;
	height: 100vh;
	overflow: hidden;
	position: relative;
}

.guide-sidebar {
	width: 25%;
	border-right: 1px solid var(--color-border-default);
}

.home-link,
.mobile-brand,
.sidebar-source a,
.chapter-card,
.pdf-footer a {
	color: var(--color-text-secondary);
	text-decoration: none;
	transition: color 0.2s;
}

.home-link {
	display: block;
}

.home-link:hover,
.mobile-brand:hover,
.sidebar-source a:hover,
.chapter-card:hover,
.pdf-footer a:hover {
	color: var(--color-text-primary);
}

.sidebar-hero {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	grid-template-areas:
		"home home"
		"eyebrow eyebrow"
		"title button"
		"subtitle subtitle";
	gap: var(--space-150) var(--space-200);
	align-items: start;
	margin-bottom: var(--space-400);
}

.sidebar-hero > div {
	display: contents;
}

.sidebar-hero .home-link,
.sidebar-eyebrow,
.sidebar-subtitle {
	grid-column: 1 / -1;
}

.sidebar-hero .home-link {
	grid-area: home;
}

.sidebar-eyebrow {
	grid-area: eyebrow;
	display: block;
	color: var(--color-functional-red);
	font-family: var(--font-mono);
	font-size: clamp(13px, 1vw, 18px);
	line-height: 1.42;
	letter-spacing: 0;
}

.sidebar-title {
	grid-area: title;
	margin: 0;
	color: var(--color-text-primary);
	font-size: clamp(38px, 2.75vw, 54px);
	font-weight: 800;
	line-height: 1.1;
	letter-spacing: 0;
}

.sidebar-subtitle {
	grid-area: subtitle;
	margin: 0;
	color: var(--color-text-secondary);
	font-size: clamp(14px, 1.05vw, 18px);
	line-height: 1.5;
}

.sidebar-index {
	display: grid;
	gap: var(--space-200);
}

.sidebar-index-title {
	margin: 0;
	padding-bottom: var(--space-100);
	border-bottom: 1px solid var(--color-border-default);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: clamp(14px, 1vw, 17px);
	font-weight: 800;
	line-height: 1.2;
	letter-spacing: 0;
}

.sidebar-group {
	display: grid;
	gap: var(--space-025);
}

.sidebar-group-header {
	display: block;
	padding: var(--space-050) var(--space-150);
	color: var(--color-text-primary);
	font-size: clamp(13px, 0.96vw, 16px);
	font-weight: 800;
	line-height: 1.2;
}

.sidebar-row {
	display: flex;
	align-items: center;
	gap: var(--space-100);
	min-height: 36px;
	padding: 0 var(--space-150);
	border-left: 4px solid transparent;
	background: transparent;
	color: var(--color-text-secondary);
	text-decoration: none;
	font-size: clamp(13px, 0.96vw, 16px);
	font-weight: 800;
	line-height: 1.15;
	transition: background-color 0.2s, color 0.2s;
}

.sidebar-row:hover,
.sidebar-row.active {
	background: var(--color-bg-secondary);
	color: var(--color-text-primary);
}

.sidebar-row.active {
	border-left-color: var(--color-functional-red);
}

.nav-block {
	display: flex;
	flex-direction: column;
	gap: var(--space-050);
}

.nav-row {
	display: flex;
	align-items: center;
	gap: var(--space-150);
	width: 100%;
	overflow: hidden;
}

.nav-number {
	min-width: 30px;
	padding: 3px 6px;
	border-radius: 2px;
	background: var(--color-border-default);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: 12px;
	font-weight: 800;
	text-align: center;
}

.pdf-nav-item.active .nav-number,
.nav-number.active,
.sidebar-row.active .nav-number {
	background: var(--color-functional-red);
	color: var(--color-bg-primary);
}

.source-state {
	display: flex;
	align-items: center;
	gap: var(--space-100);
	margin-top: var(--space-150);
	color: var(--color-text-secondary);
}

.mobile-topbar {
	position: sticky;
	top: 0;
	z-index: 40;
	display: none;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-150);
	min-height: 64px;
	padding: 0 var(--space-200);
	border-bottom: 1px solid var(--color-border-default);
	background: var(--bg-sidebar);
	backdrop-filter: blur(20px);
	-webkit-backdrop-filter: blur(20px);
}

.drawer-overlay {
	position: fixed;
	inset: 0;
	z-index: 1000;
	background: rgba(0, 0, 0, 0.48);
}

.guide-content {
	max-width: var(--guide-max);
}

.guide-page {
	display: grid;
	gap: var(--space-300);
}

.guide-page[hidden] {
	display: none;
}

.chapter-header {
	margin-bottom: 0;
	padding: var(--space-300);
}

.chapter-heading-line {
	gap: var(--space-200);
}

.chapter-label {
	font-weight: 800;
}

.theme-segment {
	display: inline-flex;
	align-items: center;
	gap: var(--space-050);
}

.theme-choice.active {
	border-color: var(--color-functional-red);
	background: var(--color-functional-red);
	color: var(--color-bg-primary);
}

.home-index {
	min-height: 100%;
	padding: var(--space-100) 0 var(--space-600);
	background-image: var(--blueprint-grid-pattern);
	background-size: var(--space-300) var(--space-300);
}

.home-hero {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: var(--space-400);
	align-items: start;
	margin-bottom: var(--space-600);
}

.home-eyebrow {
	display: block;
	margin-bottom: var(--space-200);
	color: var(--color-functional-red);
	font-family: var(--font-mono);
	font-size: clamp(22px, 3.5vw, 30px);
	line-height: 1.35;
	letter-spacing: 0;
}

.home-title {
	margin: 0;
	color: var(--color-text-primary);
	font-size: clamp(60px, 10vw, 92px);
	font-weight: 800;
	line-height: 1.16;
	letter-spacing: 0;
}

.home-subtitle {
	max-width: 760px;
	margin: var(--space-300) 0 0;
	color: var(--color-text-secondary);
	font-size: clamp(24px, 3.2vw, 31px);
	line-height: 1.5;
	letter-spacing: 0;
}

.theme-hero-button {
	display: inline-flex;
	grid-area: button;
	align-items: center;
	justify-content: center;
	gap: var(--space-100);
	align-self: center;
	justify-self: end;
	min-width: 100px;
	min-height: 52px;
	margin-top: 0;
	border: 1px solid var(--color-border-default);
	border-radius: 8px;
	background: var(--color-bg-primary);
	color: var(--color-text-primary);
	box-shadow: var(--shadow-hardware-bevel);
	font-family: var(--font-mono);
	font-size: 15px;
	font-weight: 700;
	letter-spacing: 0;
}

.theme-hero-button:hover {
	border-color: var(--color-border-hover);
	background: var(--color-bg-secondary);
}

.guidelines-index {
	display: grid;
	gap: var(--space-600);
}

.chapter-header-inner {
	display: flex;
	align-items: end;
	justify-content: space-between;
	gap: var(--space-300);
}

.chapter-progress {
	white-space: nowrap;
	font-size: 15px;
	font-weight: 800;
}

.document-hero {
	padding: var(--space-600) var(--space-200) var(--space-400);
	text-align: center;
}

.document-eyebrow {
	display: block;
	margin-bottom: var(--space-200);
	color: var(--color-functional-red);
	font-family: var(--font-mono);
	font-size: 16px;
	font-weight: 800;
	letter-spacing: 0.04em;
}

.document-title {
	max-width: 680px;
	margin: 0 auto var(--space-300);
	color: var(--color-text-primary);
	font-size: clamp(42px, 5vw, 66px);
	font-weight: 800;
	line-height: 1.12;
	letter-spacing: 0;
}

.document-copy {
	max-width: 660px;
	margin: 0 auto;
	color: var(--color-text-secondary);
	font-size: clamp(16px, 1.55vw, 20px);
	line-height: 1.65;
}

.document-actions {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--space-200);
	margin-top: var(--space-300);
}

.document-actions a {
	text-decoration: none;
}

.guidelines-title {
	margin: 0;
	padding-bottom: var(--space-150);
	border-bottom: 2px solid var(--color-border-default);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: clamp(25px, 4vw, 32px);
	font-weight: 800;
	line-height: 1.2;
	letter-spacing: 0;
}

.guideline-group {
	display: grid;
	gap: var(--space-100);
}

.guideline-group-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 var(--space-300);
	color: var(--color-text-primary);
	font-size: clamp(24px, 3.6vw, 31px);
	font-weight: 800;
	line-height: 1.2;
}

.guideline-row {
	display: flex;
	align-items: center;
	gap: var(--space-300);
	min-height: 76px;
	padding: 0 var(--space-300);
	border-left: 6px solid transparent;
	background: transparent;
	color: var(--color-text-secondary);
	text-decoration: none;
	font-size: clamp(28px, 4vw, 34px);
	font-weight: 800;
	line-height: 1.1;
	transition: background-color 0.2s, color 0.2s;
}

.guideline-row:hover,
.guideline-row.active {
	background: var(--color-bg-secondary);
	color: var(--color-text-primary);
}

.guideline-row.active {
	border-left-color: var(--color-functional-red);
}

.guideline-number {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 66px;
	height: 44px;
	border-radius: 4px;
	background: var(--color-border-default);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: 28px;
	font-weight: 800;
	line-height: 1;
}

.guideline-number.active,
.guideline-row.active .guideline-number {
	background: var(--color-functional-red);
	color: var(--color-bg-primary);
}

.home-source {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-150) var(--space-300);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: 14px;
}

.home-source a {
	color: var(--color-text-secondary);
	text-decoration: none;
}

.home-source a:hover {
	color: var(--color-text-primary);
}

.hero-block {
	padding: var(--space-600) 0;
	text-align: center;
}

.hero-title {
	max-width: 780px;
	margin: 0 auto var(--space-300);
	color: var(--color-text-primary);
	font-size: 64px;
	font-weight: 600;
	line-height: 1.1;
	letter-spacing: 0;
}

.hero-copy {
	max-width: 640px;
	margin: 0 auto;
	font-size: 18px;
	line-height: 1.6;
}

.hero-actions {
	flex-wrap: wrap;
}

.hero-actions a {
	text-decoration: none;
}

.motif-panel {
	margin-top: var(--space-400);
	margin-bottom: var(--space-300);
	padding: var(--space-400);
}

.motif-layout {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	gap: var(--space-300);
}

.motif-image {
	width: min(44%, 360px);
	min-width: 260px;
	aspect-ratio: 1;
	object-fit: cover;
	border-radius: 16px;
	border: 1px solid var(--color-border-default);
	box-shadow: var(--shadow-hardware-bevel);
}

.motif-copy {
	line-height: 1.8;
}

.chapter-card-grid,
.status-grid,
.component-grid,
.principle-list {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--space-200);
}

.status-grid,
.component-grid {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chapter-card,
.stat-panel,
.component-panel {
	display: grid;
	align-content: start;
	gap: var(--space-150);
	min-height: 160px;
}

.architecture-diagram,
.type-specimen,
.material-stack {
	display: grid;
	gap: var(--space-200);
}

.architecture-diagram {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.architecture-diagram div,
.type-specimen div {
	display: grid;
	gap: var(--space-100);
	padding: var(--space-200);
	border: 1px solid var(--color-border-default);
	background: var(--color-bg-primary);
	box-shadow: var(--shadow-hardware-bevel);
}

.architecture-diagram span,
.type-specimen span {
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: 13px;
}

.material-stack {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.material-bevel {
	box-shadow: var(--shadow-hardware-bevel);
}

.material-active {
	background: var(--color-bg-secondary);
	box-shadow: var(--shadow-hardware-bevel-active);
}

.form-specimen {
	display: grid;
	gap: var(--space-100);
	max-width: 420px;
}

.form-error {
	border-color: var(--color-functional-red);
	box-shadow: 0 0 0 2px var(--color-red-light);
}

.modal-stage {
	display: grid;
	place-items: center;
	min-height: 360px;
	background-image: var(--blueprint-grid-pattern);
	background-size: var(--space-300) var(--space-300);
}

.modal-card {
	width: min(100%, 520px);
	margin-bottom: 0;
}

.mini-nav {
	display: grid;
	max-width: 360px;
	border: 1px solid var(--color-border-default);
}

.specimen-code {
	display: block;
	padding: var(--space-200);
	overflow-x: auto;
	white-space: pre;
}

.spacing-stage {
	display: grid;
	gap: var(--space-200);
}

.spacing-stage input,
.split-demo input {
	width: 100%;
	accent-color: var(--color-functional-red);
}

.spacing-bars {
	display: grid;
	gap: var(--space-100);
}

.spacing-row {
	display: grid;
	grid-template-columns: 112px minmax(0, 1fr) 48px;
	align-items: center;
	gap: var(--space-150);
}

.spacing-row i {
	display: block;
	height: 18px;
	border: 1px solid var(--color-border-default);
	background: var(--color-border-default);
}

.spacing-row.active i {
	background: var(--color-functional-red);
	border-color: var(--color-functional-red);
	box-shadow: var(--shadow-functional-glow);
}

.token-table,
.release-table {
	font-size: 14px;
}

.theme-lab,
.split-demo,
.mobile-demo {
	margin-bottom: var(--space-300);
}

.theme-simulator {
	display: grid;
	grid-template-columns: minmax(280px, 1fr) minmax(240px, 0.8fr);
	gap: var(--space-300);
	align-items: start;
}

.theme-device {
	overflow: hidden;
	border: 6px solid var(--color-border-hover);
	border-radius: 6px;
	background: var(--color-bg-primary);
	box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.device-topbar {
	display: flex;
	align-items: center;
	gap: 6px;
	min-height: 36px;
	padding: 0 var(--space-150);
	border-bottom: 1px solid var(--color-border-default);
	background: var(--color-bg-secondary);
	color: var(--color-text-secondary);
	font-family: var(--font-mono);
	font-size: 12px;
}

.device-topbar span {
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: var(--color-border-hover);
}

.device-topbar strong {
	margin-left: auto;
	color: var(--color-text-primary);
}

.device-content {
	padding: var(--space-300);
	background-image: var(--blueprint-grid-pattern);
	background-size: var(--space-300) var(--space-300);
}

.device-panel {
	margin-bottom: 0;
}

.button-row,
.target-demo {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--space-150);
}

.field-label {
	display: block;
	margin-bottom: var(--space-100);
	color: var(--color-text-secondary);
}

.target-button {
	width: 48px;
	height: 48px;
	border-radius: 24px;
	background: var(--color-functional-red);
	box-shadow: var(--shadow-functional-glow);
	transition: border-radius 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.target-button:hover {
	border-radius: 14px;
}

.target-button:active {
	border-radius: 8px;
	box-shadow: var(--shadow-functional-glow-active);
}

.split-stage {
	--split-size: 25%;
	display: grid;
	grid-template-columns: var(--split-size) 1fr;
	min-height: 320px;
	margin-top: var(--space-200);
	overflow: hidden;
	border: 6px solid var(--color-border-hover);
	border-radius: 6px;
	background: #09090b;
}

.split-side,
.split-main {
	display: grid;
	align-content: center;
	gap: var(--space-100);
	padding: var(--space-300);
}

.split-side {
	background: var(--color-bg-secondary);
	color: var(--color-text-primary);
}

.split-main {
	background: var(--color-bg-primary);
	background-image: var(--blueprint-grid-pattern);
	background-size: var(--space-300) var(--space-300);
	color: var(--color-text-primary);
}

.phone-frame {
	width: min(100%, 360px);
	margin: 0 auto;
	padding: var(--space-150);
	border: 8px solid var(--color-border-hover);
	border-radius: 32px;
	background: #09090b;
	box-shadow: var(--shadow-hardware-bevel);
}

.phone-status {
	padding: var(--space-100) var(--space-150);
	color: #ffffff;
}

.phone-screen {
	min-height: 420px;
	padding: var(--space-300);
	border-radius: 24px;
	background: var(--color-bg-primary);
}

.chapter-controls {
	gap: var(--space-200);
}

.mobile-menu-button {
	position: fixed;
	right: 16px;
	bottom: 16px;
	z-index: 1002;
	display: none;
	border-radius: 24px;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
	padding: 12px 24px;
}

#css-source-dot[data-state="backup"] {
	background: #b45309;
}

#css-source-dot[data-state="error"] {
	background: #52525b;
}

@media (max-width: 1199px) {
	.guide-sidebar {
		width: 100%;
	}

	.mobile-menu-button {
		display: flex;
	}

	.pdf-main-content {
		padding-bottom: 96px;
	}

	.theme-hero-button {
		margin-top: 0;
	}
}

@media (max-width: 860px) {
	.chapter-card-grid,
	.status-grid,
	.component-grid,
	.principle-list,
	.theme-simulator,
	.architecture-diagram,
	.material-stack {
		grid-template-columns: 1fr;
	}

	.home-hero {
		grid-template-columns: 1fr auto;
	}

	.sidebar-hero {
		grid-template-columns: 1fr;
		grid-template-areas:
			"home"
			"eyebrow"
			"title"
			"subtitle"
			"button";
	}

	.theme-hero-button {
		justify-self: start;
	}

	.hero-title {
		font-size: 44px;
	}

	.hero-copy {
		font-size: 16px;
	}

	.chapter-heading-line,
	.chapter-controls,
	.chapter-header-inner {
		flex-direction: column;
		align-items: flex-start;
	}

	.split-stage {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 520px) {
	.mobile-topbar {
		padding: 0 var(--space-150);
	}

	.mobile-brand {
		max-width: 40vw;
		overflow: hidden;
		text-overflow: ellipsis;
		white-space: nowrap;
	}

	.hero-title {
		font-size: 36px;
	}

	.home-hero {
		grid-template-columns: 1fr;
		gap: var(--space-200);
	}

	.theme-hero-button {
		min-width: 112px;
		min-height: 56px;
		margin-top: 0;
		font-size: 16px;
	}

	.guideline-group-header,
	.guideline-row {
		padding-right: var(--space-150);
		padding-left: var(--space-150);
	}

	.guideline-row {
		gap: var(--space-200);
		font-size: 24px;
	}

	.guideline-number {
		min-width: 56px;
		height: 38px;
		font-size: 22px;
	}

	.motif-panel {
		padding: var(--space-200);
	}

	.motif-image {
		width: 100%;
		height: auto;
		aspect-ratio: 1;
	}
}