.lbo-bar {
	position: sticky;
	top: 0;
	z-index: 51;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.5rem;
	height: var(--lbo-bar-height);
	min-height: var(--lbo-bar-height);
	padding: 0.45rem var(--lbo-bar-inset);
	overflow: hidden;
	background: var(--lbo-chapter-bar);
	color: var(--lbo-chrome);
}

body.home .lbo-bar,
body.front-page .lbo-bar {
	pointer-events: none;
	background: transparent;
}

body.lbo-opener-cover .lbo-bar:not(.is-past-opener) {
	background: transparent;
}

body.home .lbo-bar__icon,
body.front-page .lbo-bar__icon,
body.home .lbo-bar__search,
body.front-page .lbo-bar__search {
	pointer-events: auto;
}

html.lbo-nav-open .lbo-bar,
body.lbo-nav-open .lbo-bar,
html.lbo-nav-open body.lbo-opener-cover .lbo-bar,
html.lbo-nav-open.lbo-search-open .lbo-bar,
html.lbo-nav-open body.search .lbo-bar,
html.lbo-search-open .lbo-bar,
body.lbo-search-open .lbo-bar,
html.lbo-search-open body.home .lbo-bar,
html.lbo-search-open body.front-page .lbo-bar,
html.lbo-search-open body.lbo-opener-cover .lbo-bar,
html.lbo-search-open body.lbo-opener-cover .lbo-bar:not(.is-past-opener),
body.search .lbo-bar {
	background: var(--lbo-paper);
	color: var(--lbo-ink);
}

html.lbo-nav-open .lbo-bar,
body.lbo-nav-open .lbo-bar,
html.lbo-search-open .lbo-bar,
body.lbo-search-open .lbo-bar {
	position: fixed;
	top: 0;
	right: 0;
	left: 0;
	width: 100%;
}

html.lbo-nav-open body,
html.lbo-search-open body {
	padding-top: var(--lbo-bar-height);
}

html.lbo-nav-open .lbo-bar__mark,
body.lbo-nav-open .lbo-bar__mark,
html.lbo-search-open .lbo-bar .lbo-bar__mark,
html.lbo-search-open .lbo-bar.is-past-opener .lbo-bar__mark,
body.lbo-search-open .lbo-bar .lbo-bar__mark,
body.lbo-search-open .lbo-bar.is-past-opener .lbo-bar__mark {
	visibility: hidden;
	opacity: 0;
	pointer-events: none;
}

html.lbo-search-open .lbo-bar .lbo-bar__mark[data-lbo-mark-search],
html.lbo-search-open .lbo-bar.is-past-opener .lbo-bar__mark[data-lbo-mark-search],
body.lbo-search-open .lbo-bar .lbo-bar__mark[data-lbo-mark-search],
body.lbo-search-open .lbo-bar.is-past-opener .lbo-bar__mark[data-lbo-mark-search],
body.search .lbo-bar .lbo-bar__mark[data-lbo-mark-search],
body.search .lbo-bar.is-past-opener .lbo-bar__mark[data-lbo-mark-search] {
	visibility: visible;
	opacity: 1;
	transform: none;
	pointer-events: none;
}

html.lbo-nav-open .lbo-bar .lbo-bar__mark[data-lbo-mark-search],
html.lbo-nav-open.lbo-search-open .lbo-bar .lbo-bar__mark[data-lbo-mark-search],
body.lbo-nav-open .lbo-bar .lbo-bar__mark[data-lbo-mark-search] {
	visibility: hidden;
	opacity: 0;
	pointer-events: none;
}

.lbo-using-keyboard .lbo-bar :focus-visible {
	outline-color: var(--lbo-chrome);
}

html.lbo-nav-open.lbo-using-keyboard .lbo-bar :focus-visible,
html.lbo-nav-open body.search.lbo-using-keyboard .lbo-bar :focus-visible,
html.lbo-search-open.lbo-using-keyboard .lbo-bar :focus-visible,
body.lbo-search-open.lbo-using-keyboard .lbo-bar :focus-visible,
body.search.lbo-using-keyboard .lbo-bar :focus-visible {
	outline-color: var(--lbo-ink);
}

.lbo-using-keyboard .lbo-nav :focus-visible,
.lbo-using-keyboard .lbo-nav--search :focus-visible {
	outline-color: var(--lbo-ink);
}

.lbo-using-keyboard .lbo-nav--search .lbo-search-form__input:focus-visible {
	outline: 2px solid var(--lbo-ink);
	outline-offset: 3px;
}

.lbo-bar__icon {
	position: relative;
	z-index: 2;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: var(--lbo-bar-icon);
	height: var(--lbo-bar-icon);
	margin-left: calc(-1 * var(--lbo-bar-icon-nudge));
	padding: 0;
	color: inherit;
	background: none;
	border: 0;
	cursor: pointer;
	text-decoration: none;
}

.lbo-bar__actions .lbo-bar__icon {
	margin-left: 0;
}

.lbo-burger {
	position: relative;
	display: block;
	width: var(--lbo-burger-width);
	height: 1.4rem;
}

.lbo-burger span {
	position: absolute;
	left: 0;
	width: 100%;
	height: 2px;
	background: currentColor;
	transform-origin: center;
	transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease, top 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.lbo-burger span:nth-child(1) {
	top: 0;
}

.lbo-burger span:nth-child(2) {
	top: calc(50% - 1px);
}

.lbo-burger span:nth-child(3) {
	top: calc(100% - 2px);
}

.lbo-bar [data-lbo-nav-open][aria-expanded="true"] .lbo-burger span:nth-child(1),
.lbo-burger--close span:nth-child(1) {
	top: calc(50% - 1px);
	transform: rotate(45deg);
	transition-delay: 0.15s;
}

.lbo-bar [data-lbo-nav-open][aria-expanded="true"] .lbo-burger span:nth-child(2),
.lbo-burger--close span:nth-child(2) {
	opacity: 0;
}

.lbo-bar [data-lbo-nav-open][aria-expanded="true"] .lbo-burger span:nth-child(3),
.lbo-burger--close span:nth-child(3) {
	top: calc(50% - 1px);
	transform: rotate(-45deg);
	transition-delay: 0.15s;
}

.lbo-icon {
	display: block;
	width: 1em;
	height: 1em;
}

.lbo-bar .lbo-icon {
	width: 1.85rem;
	height: 1.85rem;
}

@media (max-width: 63.999rem) {
	.lbo-bar {
		padding-top: 0.25rem;
		padding-bottom: 0.25rem;
	}

	.lbo-burger {
		height: 1.15rem;
	}

	.lbo-bar .lbo-icon {
		width: 1.55rem;
		height: 1.55rem;
	}
}

.lbo-bar__mark {
	position: absolute;
	left: calc(var(--lbo-bar-inset) + var(--lbo-bar-icon));
	right: calc(var(--lbo-bar-inset) + var(--lbo-bar-icon));
	display: flex;
	align-items: center;
	margin: 0;
	overflow: hidden;
	font-family: var(--lbo-font-sans);
	font-size: clamp(1.4rem, 2.2vw + 0.8rem, 1.95rem);
	font-weight: 500;
	letter-spacing: 0.01em;
	line-height: var(--lbo-leading-heading);
	color: inherit;
	text-decoration: none;
	text-align: center;
	white-space: nowrap;
	transform: translateY(0);
}

@media (max-width: 63.999rem) {
	.lbo-bar__mark {
		font-size: clamp(1.25rem, 2vw + 0.72rem, 1.75rem);
	}
}

.lbo-bar.is-mark-ready .lbo-bar__mark {
	transition: opacity 0.5s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.lbo-bar__mark[data-lbo-mark-chapter],
.lbo-bar__mark[data-lbo-mark-search] {
	opacity: 0;
	transform: translateY(-1.4rem);
	pointer-events: none;
}

.lbo-bar__clip {
	display: block;
	min-width: 0;
	width: 100%;
	overflow: hidden;
	white-space: nowrap;
	text-align: center;
}

.lbo-bar__track {
	display: inline-flex;
	align-items: baseline;
	white-space: nowrap;
}

.lbo-bar__mark.is-overflow .lbo-bar__clip {
	--lbo-marquee-inset: 2rem;
	text-align: left;
	-webkit-mask-image: linear-gradient(to right, transparent, #000 2rem, #000 calc(100% - 2rem), transparent);
	mask-image: linear-gradient(to right, transparent, #000 2rem, #000 calc(100% - 2rem), transparent);
}

.lbo-bar__mark.is-marquee .lbo-bar__track {
	animation-name: lbo-bar-marquee;
	animation-duration: var(--lbo-marquee-duration, 14s);
	animation-timing-function: ease-in-out;
	animation-iteration-count: infinite;
	animation-direction: alternate;
}

.lbo-bar__mark.is-marquee:hover .lbo-bar__track,
.lbo-bar__mark.is-marquee:focus-visible .lbo-bar__track {
	animation-play-state: paused;
}

@keyframes lbo-bar-marquee {
	0%,
	14% {
		transform: translateX(var(--lbo-marquee-inset, 2rem));
	}

	86%,
	100% {
		transform: translateX(calc(var(--lbo-marquee-shift, 0px) - var(--lbo-marquee-inset, 2rem)));
	}
}

@media (prefers-reduced-motion: reduce) {
	.lbo-bar__mark.is-marquee .lbo-bar__track {
		animation: none;
	}
}

.lbo-bar.is-past-opener .lbo-bar__mark[data-lbo-mark-home] {
	opacity: 0;
	transform: translateY(1.4rem);
	pointer-events: none;
}

.lbo-bar.is-past-opener .lbo-bar__mark[data-lbo-mark-chapter] {
	opacity: 1;
	transform: translateY(0);
	pointer-events: auto;
}

.lbo-bar__num {
	margin-right: 0.35em;
	font-family: var(--lbo-font-serif);
	font-weight: 300;
}

.lbo-bar__num[hidden] {
	display: none;
}

.lbo-bar__name {
	overflow: visible;
}

.lbo-bar__actions {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 0.2rem;
	font-family: var(--lbo-font-sans);
	font-size: 1rem;
}

.lbo-bar__search {
	display: flex;
	align-items: center;
	margin: 0;
}

.lbo-bar [data-lbo-search-open] .lbo-burger {
	display: none;
}

.lbo-bar [data-lbo-search-open][aria-expanded="true"] .lbo-bar__search-glyph {
	display: none;
}

.lbo-bar [data-lbo-search-open][aria-expanded="true"] .lbo-burger {
	display: block;
}

/* Search reuses .lbo-nav / .lbo-nav__inner / .lbo-nav__toc and the Contents ::before divider. Left column only. */
.lbo-nav--search {
	scrollbar-width: none;
	-ms-overflow-style: none;
}

.lbo-nav--search::-webkit-scrollbar {
	display: none;
	width: 0;
	height: 0;
}

body.search .lbo-nav--search {
	position: relative;
	top: auto;
	right: auto;
	bottom: auto;
	left: auto;
	z-index: auto;
	overflow: visible;
	min-height: calc(100vh - var(--lbo-bar-height));
	min-height: calc(100dvh - var(--lbo-bar-height));
	visibility: visible;
	pointer-events: auto;
	clip-path: none;
}

body.search .lbo-nav--search .lbo-nav__title {
	opacity: 1;
	transform: none;
}

.lbo-nav--search .lbo-search-form {
	max-width: none;
	margin: 0;
	min-width: 0;
}

.lbo-nav--search .lbo-search-form__field {
	min-width: 0;
	padding-bottom: 0.85rem;
	border-bottom: 1px solid var(--lbo-ink);
}

.lbo-nav--search .lbo-search-form__input {
	display: block;
	box-sizing: border-box;
	width: 100%;
	min-width: 0;
	min-height: 0;
	margin: 0;
	padding: 0;
	border: 0;
	border-radius: 0;
	appearance: none;
	background: transparent;
	color: inherit;
	font: inherit;
	letter-spacing: inherit;
	line-height: inherit;
}

.lbo-nav--search .lbo-search-form__input::-webkit-search-decoration,
.lbo-nav--search .lbo-search-form__input::-webkit-search-cancel-button {
	-webkit-appearance: none;
	appearance: none;
}

.lbo-nav--search .lbo-search-form__input::placeholder {
	color: inherit;
	opacity: 0.38;
}

.lbo-nav--search .lbo-search-live {
	min-width: 0;
}

.lbo-nav--search .lbo-search-form:has(.lbo-search-live[data-open]) .lbo-search-results {
	display: none;
}

.lbo-nav--search .lbo-search-results__empty {
	margin: 0;
	padding: 0.85rem 0;
	border-top: 1px solid var(--lbo-rule);
	font-family: var(--lbo-font-sans);
	font-size: var(--lbo-text-body);
	line-height: var(--lbo-leading-sans);
}

.lbo-nav--search .lbo-search-live,
.lbo-nav--search .lbo-search-count,
.lbo-nav--search .lbo-search-live__status {
	margin: 0;
}

.lbo-nav--search .lbo-search-count,
.lbo-nav--search .lbo-search-live__status {
	padding-bottom: 0.85rem;
}

/* Same left edge as #lbo-contents (.lbo-nav__inner gutter). Marks sit on that inset. */
#lbo-contents .lbo-nav__inner,
#lbo-search .lbo-nav__inner,
body.search .lbo-nav--search > .lbo-nav__inner {
	padding-inline: var(--lbo-gutter);
}

.lbo-nav--search .lbo-search-form__field,
.lbo-nav--search .lbo-search-results,
.lbo-nav--search .lbo-search-live__list {
	margin-inline: 0;
	padding-inline: 0;
}

/* Count and See all share the mark / field gutter. Titles stay in the grid column. */
.lbo-nav--search .lbo-search-count,
.lbo-nav--search .lbo-search-live__status {
	padding-inline-start: 0;
}

/* Overlay only. Always black, never the chapter accent. Flush with mark gutter. */
#lbo-search .lbo-search-live {
	display: flex;
	flex-direction: column;
	align-items: stretch;
}

#lbo-search a.lbo-search-live__more,
#lbo-search a.lbo-search-live__more:link,
#lbo-search a.lbo-search-live__more:visited,
#lbo-search a.lbo-search-live__more:focus,
#lbo-search a.lbo-search-live__more:focus-visible,
#lbo-search .lbo-search-live__more.lbo-btn,
#lbo-search .lbo-search-live__more.lbo-btn--invert {
	display: inline-block;
	flex: 0 0 auto;
	align-self: flex-start;
	width: auto;
	width: fit-content;
	max-width: 100%;
	margin: 0.85rem 0 0;
	margin-inline-start: 0;
	padding: 0.4rem 0.975rem;
	border: 1px solid #000000;
	border-radius: 0;
	color: #000000;
	background: transparent;
	outline-color: #000000;
	font-family: var(--lbo-font-mono);
	font-size: var(--lbo-text-mono);
	font-weight: 400;
	font-synthesis: none;
	line-height: var(--lbo-leading-mono);
}

#lbo-search a.lbo-search-live__more:hover,
#lbo-search a.lbo-search-live__more:active,
#lbo-search .lbo-search-live__more.lbo-btn--invert:hover,
#lbo-search .lbo-search-live__more.lbo-btn--invert:active {
	color: #fff;
	background: #000000;
	border-color: #000000;
}

@media (prefers-reduced-motion: no-preference) {
	#lbo-search a.lbo-search-live__more {
		transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
	}
}

html.lbo-using-keyboard #lbo-search .lbo-search-live__more:focus-visible {
	outline: 2px solid #000000;
	outline-offset: 3px;
}

/*
 * Desktop overlay: Contents 2/3 rule (.lbo-nav::before) meets the See all button.
 * Height is not a fixed px — top + bottom insets on the absolutely positioned rule.
 * List scrolls; button stays compact at the foot of the column (do not stretch it).
 */
@media (min-width: 56rem) {
	#lbo-search.lbo-nav {
		--lbo-nav-rule-inset: 1.5rem;
		overflow: hidden;
	}

	#lbo-search.lbo-nav::before {
		top: var(--lbo-nav-rule-inset);
		bottom: var(--lbo-nav-rule-inset);
	}

	#lbo-search .lbo-nav__inner {
		align-items: stretch;
		height: 100%;
		max-height: 100%;
		padding-bottom: var(--lbo-nav-rule-inset);
	}

	#lbo-search .lbo-nav__toc {
		min-height: 0;
		height: 100%;
	}

	#lbo-search .lbo-search-form__field,
	#lbo-search .lbo-search-live__status,
	#lbo-search .lbo-search-live__more {
		flex-shrink: 0;
	}

	#lbo-search .lbo-search-live[data-open] {
		flex: 0 1 auto;
		min-height: 0;
	}

	#lbo-search .lbo-search-live__list {
		flex: 1 1 auto;
		min-height: 0;
		overflow-y: auto;
		scrollbar-width: none;
		-ms-overflow-style: none;
	}

	#lbo-search .lbo-search-live__list::-webkit-scrollbar {
		display: none;
		width: 0;
		height: 0;
	}

	/* Results page uses the same 2-col grid; grow with the list, end the rule at the last row. */
	body.search .lbo-nav--search::before {
		bottom: 3rem;
	}
}

/* Directory order: mark left, title right. Do not invert. */
.lbo-nav--search .lbo-search-row {
	display: grid;
	grid-template-columns: var(--lbo-finder-mark) minmax(0, 1fr);
	column-gap: var(--lbo-search-title-gap, var(--lbo-space-3));
	align-items: start;
}

@media (max-width: 48rem) {
	.lbo-nav--search .lbo-nav__title {
		padding-top: 0.5rem;
		padding-bottom: 0.5rem;
		font-size: 1.75rem;
	}

	.lbo-nav--search .lbo-nav__toc {
		gap: 0.85rem;
	}
}

.lbo-nav__title {
	margin: 0;
	padding-top: 0.85rem;
	border-top: 1px solid var(--lbo-ink);
	font-family: var(--lbo-font-sans);
	font-size: clamp(2.75rem, 6vw, 4.5rem);
	font-weight: 500;
	line-height: 1.05;
	letter-spacing: -0.02em;
}

.lbo-nav__langs {
	margin: 0;
}

.lbo-nav {
	position: fixed;
	top: var(--lbo-bar-height);
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 50;
	display: block;
	width: auto;
	margin: 0;
	padding: 0;
	border: 0;
	overflow: auto;
	overscroll-behavior: contain;
	color: var(--lbo-ink);
	background: var(--lbo-paper);
	visibility: hidden;
	pointer-events: none;
	clip-path: inset(0 0 100% 0);
	transition: clip-path 0.5s cubic-bezier(0.22, 1, 0.36, 1), visibility 0s 0.5s;
}

.lbo-nav.is-open,
.lbo-nav[open] {
	visibility: visible;
	pointer-events: auto;
	clip-path: inset(0);
	transition: clip-path 0.5s cubic-bezier(0.22, 1, 0.36, 1), visibility 0s;
}

html.lbo-nav-open,
body.lbo-nav-open,
html.lbo-search-open,
body.lbo-search-open {
	overflow: hidden;
}

/*
 * scrollbar-gutter: stable (type.css) stays reserved after overflow: hidden.
 * The white overlay stops at that gutter, so the chapter header colour shows
 * as a solid bar. Drop the gutter while an overlay is open. The overlay then
 * fills the viewport and any scrollbar is the browser default on white.
 * The search results page keeps the stable gutter (it is the page, not an overlay).
 */
html.lbo-nav-open,
html.lbo-search-open:not(:has(body.search)) {
	scrollbar-gutter: auto;
	background-color: var(--lbo-paper);
}

/* Results page grows with the list. Overlay #lbo-search stays viewport-locked. */
html.lbo-search-open:not(.lbo-nav-open):has(body.search),
html.lbo-search-open body.search:not(.lbo-nav-open),
body.search.lbo-search-open:not(.lbo-nav-open) {
	overflow: visible;
}

.lbo-nav__inner {
	display: grid;
	gap: 2.5rem;
	max-width: none;
	margin: 0 auto;
	padding: 1.5rem var(--lbo-gutter) 3rem;
}

.lbo-nav__title,
.lbo-nav__list > li,
.lbo-nav__aside {
	opacity: 0;
	transform: translateY(-0.55rem);
	transition: opacity 0.2s ease, transform 0.2s ease;
}

.lbo-nav.is-open .lbo-nav__title,
.lbo-nav.is-open .lbo-nav__list > li,
.lbo-nav.is-open .lbo-nav__aside {
	opacity: 1;
	transform: none;
	transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.lbo-nav.is-open .lbo-nav__title {
	transition-delay: 0.1s;
}

.lbo-nav.is-open .lbo-nav__list > li {
	transition-delay: 0.16s;
}

.lbo-nav.is-open .lbo-nav__aside {
	transition-delay: 0.22s;
}

.lbo-nav__toc {
	display: flex;
	flex-direction: column;
	gap: 1.35rem;
	min-width: 0;
}

@media (min-width: 56rem) {
	.lbo-nav::before {
		content: "";
		position: absolute;
		top: 1.5rem;
		bottom: 1.5rem;
		left: calc(var(--lbo-gutter) + (100% - (2 * var(--lbo-gutter))) * 2 / 3);
		width: 1px;
		background: var(--lbo-ink);
		pointer-events: none;
		z-index: 1;
	}

	.lbo-nav__inner {
		grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
		align-items: start;
		column-gap: 0;
		min-height: 100%;
	}

	.lbo-nav__toc {
		padding-right: 1.5rem;
	}

	.lbo-nav__aside {
		padding-left: 1.5rem;
	}
}

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

.lbo-nav__preamble {
	margin: 0;
	padding: 0.35rem 0 0.8rem;
	border-top: 1px solid var(--lbo-ink);
}

.lbo-nav__preamble ul {
	display: flex;
	flex-direction: column;
	margin: 0;
	padding: 0;
	list-style: none;
}

.lbo-nav__preamble a {
	display: block;
	padding: 0.1rem 0 0.45rem;
	color: var(--lbo-ink);
	font-family: var(--lbo-font-sans);
	font-size: 1.75rem;
	font-weight: 400;
	line-height: var(--lbo-leading-heading);
	text-decoration: none;
}

.lbo-nav__list > li > a {
	display: block;
	padding: 0.4rem 0 1.15rem;
	border-top: 1px solid var(--lbo-chapter, var(--lbo-rule));
	color: var(--lbo-chapter-contrast, var(--lbo-chapter, var(--lbo-ink)));
	text-decoration: none;
	font-family: var(--lbo-font-sans);
	font-size: 1.75rem;
	font-weight: 500;
	line-height: var(--lbo-leading-heading);
}

.lbo-nav__list > li:last-child > a {
	border-bottom: 1px solid var(--lbo-chapter, var(--lbo-rule));
}

@media (max-width: 48rem) {
	#lbo-contents .lbo-nav__title {
		padding-top: 0.5rem;
		font-size: 1.75rem;
	}

	#lbo-contents .lbo-nav__toc {
		gap: 0.85rem;
	}

	#lbo-contents .lbo-nav__preamble {
		padding: 0.15rem 0 0.4rem;
	}

	#lbo-contents .lbo-nav__preamble a,
	#lbo-contents .lbo-nav__list > li > a {
		font-size: 1.125rem;
	}

	/* Key messages (.lbo-nav__matter) and chapters share this gap. */
	#lbo-contents .lbo-nav__list > li > a {
		padding: 0.3rem 0 0.7rem;
	}

	/* Home–Introduction: paragraph line-height only. */
	#lbo-contents .lbo-nav__preamble a {
		padding: 0;
		margin: 0;
	}
}

.lbo-nav__home {
	--lbo-chapter: var(--lbo-ink);
	--lbo-chapter-contrast: var(--lbo-ink);
}

.lbo-chip {
	width: 0.7rem;
	height: 0.7rem;
	border-radius: 50%;
	background: var(--lbo-chapter);
	box-shadow: 0 0 0 1px rgb(26 26 26 / 0.12);
}

.lbo-nav__aside,
.lbo-sidebar {
	font-family: var(--lbo-font-mono);
	font-weight: 400;
	font-synthesis: none;
	line-height: var(--lbo-leading-mono);
}

.lbo-nav__aside {
	display: flex;
	flex-direction: column;
	align-content: start;
	gap: 2rem;
	font-size: 1rem;
}

.lbo-sidebar {
	font-size: var(--lbo-text-mono);
}

.lbo-nav__aside .lbo-nav__langs,
.lbo-nav__aside .lbo-nav__pdf,
.lbo-nav__aside .lbo-nav__info {
	padding-top: 0.85rem;
	border-top: 1px solid var(--lbo-ink);
}

.lbo-sidebar p,
.lbo-sidebar__block {
	margin: 0;
	padding: var(--lbo-space-2) 0;
	border-bottom: 1px solid var(--lbo-chapter);
}

.lbo-sidebar > :first-child {
	border-top: 1px solid var(--lbo-chapter);
}

.lbo-sidebar > :last-child {
	border-bottom: 1px solid var(--lbo-chapter);
}

.lbo-sidebar > p + p {
	margin-top: 0;
}

.lbo-sidebar__block p {
	margin: 0;
	padding: 0;
	border: 0;
}

.lbo-sidebar__block p + p,
.lbo-sidebar__authors {
	margin-top: 0.5lh;
}

.lbo-sidebar .lbo-sidebar__authors {
	margin-bottom: 0;
	margin-left: 0;
	padding-left: 1.15em;
	list-style: disc;
}

.lbo-sidebar__authors > li {
	padding-left: 0;
}

.lbo-sidebar__authors > li::before {
	content: none;
}

.lbo-sidebar__authors li + li {
	margin-top: 0.25em;
}

.lbo-sidebar__kicker {
	font-weight: 500;
}

.lbo-fn-margin {
	display: none;
	font-family: var(--lbo-font-mono);
	font-size: var(--lbo-text-mono);
	font-weight: 400;
	line-height: var(--lbo-leading-mono);
	color: var(--lbo-ink);
	border-top: 1px solid var(--lbo-chapter);
	border-bottom: 1px solid var(--lbo-chapter);
	padding-top: var(--lbo-space-2);
	padding-bottom: var(--lbo-space-2);
}

.lbo-fn-margin.is-active {
	color: var(--lbo-ink);
}

@media (min-width: 72rem) {
	.lbo-fn-margin {
		display: block;
	}
}

.lbo-sidebar__label::after,
.lbo-nav__aside .lbo-nav__langs-label::after,
.lbo-nav__aside .lbo-pdf__title::after,
.lbo-nav__aside .lbo-pdf__label::after {
	content: ": ";
}

/* French print uses a no-break space before the colon (U+00A0). html lang is fr-FR. */
html:lang(fr) .lbo-sidebar__label::after {
	content: "\00a0: ";
}

.lbo-nav__aside a {
	color: inherit;
	text-decoration: none;
	text-underline-offset: 0.12em;
}

.lbo-nav__aside a:hover,
.lbo-nav__aside a:focus-visible,
.lbo-nav__aside .lbo-nav__langs a[aria-current="true"] {
	text-decoration: underline;
}

.lbo-sidebar a {
	color: inherit;
	text-decoration: underline;
	text-underline-offset: 0.12em;
}

.lbo-nav__aside .lbo-pdf {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	margin: 0;
}

.lbo-nav__aside .lbo-pdf__lead,
.lbo-nav__aside .lbo-pdf__group {
	margin: 0;
}

.lbo-nav__aside .lbo-pdf__title,
.lbo-nav__aside .lbo-pdf__label,
.lbo-nav__aside .lbo-pdf__note,
.lbo-nav__aside .lbo-nav__langs-label {
	display: inline;
	margin: 0;
	font-family: inherit;
	font-size: inherit;
	font-weight: inherit;
}

.lbo-nav__aside .lbo-nav__langs ul,
.lbo-nav__aside .lbo-pdf__group ul {
	display: inline;
	margin: 0;
	padding: 0;
	list-style: none;
	font-family: inherit;
	font-size: inherit;
	font-weight: inherit;
}

.lbo-nav__aside .lbo-nav__langs li,
.lbo-nav__aside .lbo-pdf__group li {
	display: inline;
}

.lbo-nav__aside .lbo-nav__langs li:not(:last-child)::after,
.lbo-nav__aside .lbo-pdf__group li:not(:last-child)::after {
	content: ",";
	margin-right: 0.35em;
	text-decoration: none;
}

.lbo-nav__aside .lbo-pdf__group span {
	opacity: 0.45;
}

.lbo-nav__aside .lbo-nav__info {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
	margin: 0;
}

.lbo-nav__aside .lbo-nav__meta,
.lbo-nav__aside .lbo-nav__meta ul {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.lbo-nav__aside .lbo-nav__meta li {
	margin: 0;
	padding: 0;
	border: 0;
	list-style: none;
}

.lbo-nav__aside .lbo-colophon {
	margin: 0;
	padding: 0;
	border: 0;
	font-family: inherit;
	font-size: inherit;
	font-weight: inherit;
}

.lbo-visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.lbo-btn {
	appearance: none;
	border: 1px solid var(--lbo-ink);
	padding: 0.4rem 0.7rem;
	text-decoration: none;
	cursor: pointer;
}

/* Publication buttons: sidebar mono, chapter outline. Cover, search, and cookie stay out. */
.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert),
.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert):link,
.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert):visited {
	display: inline-block;
	font-family: var(--lbo-font-mono);
	font-size: var(--lbo-text-mono);
	font-weight: 400;
	font-synthesis: none;
	line-height: var(--lbo-leading-mono);
	color: var(--lbo-chapter);
	background: transparent;
	border: 1px solid var(--lbo-chapter);
}

@media (prefers-reduced-motion: no-preference) {
	.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert) {
		transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
	}
}

.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert):hover,
.lbo-btn:not(.lbo-btn--cover):not(.lbo-btn--invert):active {
	color: #fff;
	background: var(--lbo-chapter);
	border-color: var(--lbo-chapter);
}

.lbo-using-keyboard .lbo-btn:focus-visible {
	outline: 2px solid var(--lbo-focus);
	outline-offset: 3px;
}

/* Home cover CTA metrics, inverted. Used by Search overlay “See all”. Do not apply to Home. */
.lbo-btn--invert,
.lbo-btn--invert:link,
.lbo-btn--invert:visited,
.lbo-btn--invert:hover,
.lbo-btn--invert:focus,
.lbo-btn--invert:active,
.lbo-btn--invert:focus-visible {
	font-family: var(--lbo-font-sans);
	font-size: 1rem;
	font-weight: 500;
	font-synthesis: none;
	line-height: var(--lbo-leading-heading);
	color: #fff;
	background: #000;
	border-color: #000;
	padding-left: 0.975rem;
	padding-right: 0.975rem;
}

/* Cover type is sidebar mono. White outline lives with .lbo-btn--cover in components.css. */
.lbo-btn--cover {
	font-family: var(--lbo-font-mono);
	font-size: var(--lbo-text-mono);
	font-weight: 400;
	line-height: var(--lbo-leading-mono);
}

/* Cookie notice keeps the ink outline. */
.lbo-cookies .lbo-btn:not(.lbo-btn--invert),
.lbo-cookies .lbo-btn:not(.lbo-btn--invert):hover,
.lbo-cookies .lbo-btn:not(.lbo-btn--invert):active,
.lbo-cookies .lbo-btn:not(.lbo-btn--invert):focus,
.lbo-cookies .lbo-btn:not(.lbo-btn--invert):focus-visible {
	font-family: var(--lbo-font-sans);
	font-size: 0.875rem;
	font-weight: 400;
	line-height: var(--lbo-leading-heading);
	color: var(--lbo-ink);
	background: var(--lbo-paper);
	border-color: var(--lbo-ink);
}

.lbo-submenu {
	display: flex;
	flex-direction: column;
	align-items: stretch;
	width: 100%;
	gap: var(--lbo-space-4);
	margin: 0 0 var(--lbo-space-8);
	padding: 0;
	font-family: var(--lbo-font-mono);
	font-size: 1rem;
	font-weight: 400;
	font-synthesis: none;
	line-height: var(--lbo-leading-mono);
	color: var(--lbo-chapter);
}

.lbo-submenu a {
	display: flex;
	flex-direction: column;
	align-items: stretch;
	gap: var(--lbo-space-2);
	text-decoration: none;
	color: color-mix(in srgb, var(--lbo-chapter) 45%, var(--lbo-paper));
	touch-action: manipulation;
	cursor: pointer;
}

.lbo-submenu a[aria-current="true"],
.lbo-submenu a.is-reached {
	color: var(--lbo-chapter);
}

.lbo-submenu a[aria-current="true"] {
	font-weight: 500;
}

.lbo-submenu__progress {
	display: block;
	height: 1px;
	background: color-mix(in srgb, var(--lbo-chapter) 28%, var(--lbo-paper));
}

.lbo-submenu__fill {
	display: block;
	height: 1px;
	width: 0;
	background: var(--lbo-chapter);
}

@media (prefers-reduced-motion: no-preference) {
	.lbo-submenu__fill {
		transition: width 0.16s linear;
	}
}

.lbo-submenu__compact {
	display: none;
}

.lbo-submenu__toggle {
	appearance: none;
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	color: inherit;
	font: inherit;
	text-align: left;
	cursor: pointer;
	display: flex;
	flex-direction: column;
	align-items: stretch;
	gap: var(--lbo-space-2);
	width: 100%;
}

.lbo-using-keyboard .lbo-submenu__toggle:focus-visible {
	outline: 2px solid var(--lbo-chapter);
	outline-offset: 3px;
}

.lbo-submenu__toggle-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--lbo-space-3);
}

.lbo-submenu__toggle-label {
	margin: 0;
	font-size: 0.8125rem;
	font-weight: 500;
	letter-spacing: 0.02em;
	text-transform: uppercase;
}

.lbo-submenu__now {
	display: block;
	font-weight: 500;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.lbo-submenu__chevron {
	display: block;
	flex: 0 0 auto;
	width: 0.55rem;
	height: 0.55rem;
	border-right: 1.5px solid currentColor;
	border-bottom: 1.5px solid currentColor;
	transform: translateY(-0.1rem) rotate(45deg);
}

.lbo-submenu.is-open .lbo-submenu__chevron {
	transform: translateY(0.15rem) rotate(-135deg);
}

@media (max-width: 47.999rem) {
	.lbo-submenu--ready {
		position: sticky;
		top: var(--lbo-bar-height);
		z-index: 49;
		width: auto;
		margin: 0 calc(-1 * var(--lbo-page-inset)) var(--lbo-space-6);
		padding: 0.7rem var(--lbo-page-inset);
		background: var(--lbo-paper);
		border-bottom: 1px solid var(--lbo-chapter);
		gap: 0;
	}

	html.lbo-nav-open .lbo-submenu--ready,
	body.lbo-nav-open .lbo-submenu--ready,
	html.lbo-search-open .lbo-submenu--ready,
	body.lbo-search-open .lbo-submenu--ready,
	body.search .lbo-submenu--ready {
		visibility: hidden;
		pointer-events: none;
	}

	.lbo-submenu--ready .lbo-submenu__compact {
		display: block;
	}

	.lbo-submenu--ready:not(.is-open) .lbo-submenu__panel {
		display: none;
	}

	.lbo-submenu--ready.is-open .lbo-submenu__toggle .lbo-submenu__progress,
	.lbo-submenu--ready.is-open .lbo-submenu__now {
		display: none;
	}

	.lbo-submenu--ready.is-open .lbo-submenu__panel {
		display: block;
		max-height: calc(100dvh - var(--lbo-bar-height) - 5.5rem);
		margin-top: var(--lbo-space-4);
		overflow: auto;
		overscroll-behavior: contain;
	}

	.lbo-submenu--ready .lbo-submenu__links {
		display: flex;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
	}

	.lbo-submenu--ready .lbo-submenu__links a {
		gap: 0.6rem;
		padding-bottom: 0.6rem;
		min-height: 2.5rem;
	}
}

@media (min-width: 48rem) {
	.lbo-submenu__compact {
		display: none;
	}

	.lbo-submenu__panel,
	.lbo-submenu__panel[hidden],
	.lbo-submenu__links {
		display: contents;
	}

	/* Match compact On this page: even 0.6rem above/below each rule. */
	.lbo-submenu {
		gap: 0;
	}

	.lbo-submenu a {
		gap: 0.6rem;
		padding-bottom: 0.6rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.lbo-submenu__chevron {
		transition: none;
	}
}

@media (prefers-reduced-motion: no-preference) {
	.lbo-submenu__chevron {
		transition: transform 0.16s ease;
	}
}

html.lbo-is-chapter {
	scroll-padding-top: calc(var(--lbo-bar-height) + var(--lbo-space-chrome));
}

[data-lbo-section],
.lbo-subsection,
.lbo-finder__group {
	scroll-margin-top: 0;
}

@media (max-width: 47.999rem) {
	html.lbo-is-chapter {
		scroll-padding-top: calc(var(--lbo-bar-height) + var(--lbo-chrome-stack, 0px));
	}
}

.lbo-peek {
	display: block;
	margin-top: var(--lbo-space-16);
	padding: 3rem var(--lbo-gutter) 5rem;
	min-height: var(--lbo-peek-height);
	background: var(--lbo-chapter-tint);
	color: var(--lbo-chapter);
	text-decoration: none;
	overflow-wrap: anywhere;
	word-break: break-word;
}

.lbo-peek .lbo-style-kicker,
.lbo-peek .lbo-style-opener-title {
	overflow-wrap: anywhere;
	word-break: break-word;
	hyphens: none;
}

.lbo-peek .lbo-style-opener-title {
	margin-top: 0;
}

.lbo-peek .lbo-style-kicker + .lbo-style-opener-title {
	margin-top: 0.4rem;
}

@media (max-width: 63.999rem) {
	.lbo-peek {
		min-height: 0;
		padding-bottom: 3rem;
	}
}

.lbo-bar {
	transition: background-color 0.7s cubic-bezier(0.22, 1, 0.36, 1), color 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.lbo-peek.is-advancing {
	position: fixed;
	z-index: 40;
	margin: 0;
	box-sizing: border-box;
	transition: top 0.7s cubic-bezier(0.22, 1, 0.36, 1), left 0.7s cubic-bezier(0.22, 1, 0.36, 1), width 0.7s cubic-bezier(0.22, 1, 0.36, 1), height 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

html.lbo-peek-leave,
html.lbo-peek-leave body {
	overflow: hidden;
}

html.lbo-peek-leave .lbo-bar,
html.lbo-peek-leave [data-lbo-opener],
html.lbo-peek-leave .lbo-chapter-body {
	opacity: 0;
	transition: opacity 0.35s ease;
}

/* Cover leave: the chapter rule fades the header only. Fade the whole page, then the same arrival plays. */
html.lbo-cover-leave {
	background: var(--lbo-paper);
}

html.lbo-cover-leave body {
	opacity: 0;
	transition: opacity 0.35s ease;
}

html.lbo-peek-arrive .lbo-bar,
html.lbo-peek-arrive .lbo-chapter-body {
	opacity: 0;
	pointer-events: none;
}

html.lbo-peek-arrive.is-peek-revealed .lbo-bar,
html.lbo-peek-arrive.is-peek-revealed .lbo-chapter-body {
	opacity: 1;
	pointer-events: auto;
	transition: opacity 0.55s ease;
}

html.lbo-peek-leave .lbo-peek.is-peek-source,
html.lbo-peek-arrive [data-lbo-opener] {
	view-transition-name: lbo-chapter-hero;
}

/* Cover arrival: one fade for the whole page. The chapter opener is not pulled out on its own. */
html.lbo-cover-arrive {
	background: var(--lbo-paper);
}

html.lbo-cover-arrive body {
	opacity: 0;
}

html.lbo-cover-arrive .lbo-bar,
html.lbo-cover-arrive .lbo-chapter-body,
html.lbo-cover-arrive [data-lbo-opener] {
	opacity: 1;
	transition: none;
}

html.lbo-cover-arrive [data-lbo-opener] {
	view-transition-name: none;
}

html.lbo-cover-arrive.is-peek-revealed body {
	opacity: 1;
	transition: opacity 0.55s ease;
}

@view-transition {
	navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
	mix-blend-mode: normal;
}

::view-transition-old(root) {
	animation: lbo-vt-fade-out 0.4s ease both;
}

::view-transition-new(root) {
	animation: none;
	opacity: 0;
}

::view-transition-group(lbo-chapter-hero) {
	animation-duration: 0.75s;
	animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

::view-transition-old(lbo-chapter-hero),
::view-transition-new(lbo-chapter-hero) {
	animation: none;
	height: 100%;
	object-fit: none;
	overflow: clip;
}

@keyframes lbo-vt-fade-out {
	to {
		opacity: 0;
	}
}

@media (prefers-reduced-motion: reduce) {
	.lbo-bar,
	.lbo-peek.is-advancing,
	html.lbo-peek-leave .lbo-bar,
	html.lbo-peek-leave [data-lbo-opener],
	html.lbo-peek-leave .lbo-chapter-body,
	html.lbo-cover-leave body,
	html.lbo-cover-arrive.is-peek-revealed body,
	html.lbo-peek-arrive.is-peek-revealed .lbo-bar,
	html.lbo-peek-arrive.is-peek-revealed .lbo-chapter-body {
		transition: none;
	}

	html.lbo-cover-arrive body {
		opacity: 1;
	}

	html.lbo-peek-arrive .lbo-bar,
	html.lbo-peek-arrive .lbo-chapter-body {
		opacity: 1;
		pointer-events: auto;
	}

	html.lbo-peek-leave .lbo-peek.is-peek-source,
	html.lbo-peek-arrive [data-lbo-opener] {
		view-transition-name: none;
	}

	@view-transition {
		navigation: none;
	}
}

.lbo-main {
	padding: 0 0 var(--lbo-space-16);
}

body.search .lbo-main {
	padding-top: var(--lbo-space-chrome);
}

body.home,
body.front-page {
	overflow: hidden;
	height: 100dvh;
}

body.home .lbo-main,
body.front-page .lbo-main {
	padding-bottom: 0;
}

.lbo-main.lbo-chapter {
	padding-bottom: 0;
	--lbo-chrome-stack: 1px;
}

.lbo-main.lbo-chapter:not(:has(.lbo-peek)) {
	padding-bottom: var(--lbo-space-16);
}

.lbo-wrap {
	max-width: var(--lbo-measure);
	margin: 0 auto;
	padding: 0 var(--lbo-gutter);
}


.lbo-chapter .lbo-wrap {
	padding-top: var(--lbo-space-8);
}

.lbo-chapter-body {
	max-width: none;
	margin: 0;
	padding: var(--lbo-space-chrome) var(--lbo-page-inset) 0;
}

@media (min-width: 48rem) {
	.lbo-opener-simple .lbo-chapter-body {
		padding-top: calc(2 * var(--lbo-space-chrome));
	}
}

@media (max-width: 47.999rem) {
	.lbo-opener-simple .lbo-chapter-body {
		padding-top: 0;
	}
}

.lbo-chapter-body .lbo-wrap {
	--lbo-measure: 100%;
	max-width: none;
	margin: 0;
	padding: 0;
}

.lbo-chapter-body .lbo-wrap--icon,
.lbo-chapter-body .lbo-wrap--hang {
	border-top: 0;
}

.lbo-chapter-body .lbo-wrap--icon > .lbo-part__body,
.lbo-chapter-body .lbo-wrap--icon > .lbo-style-h4,
.lbo-chapter-body .lbo-wrap--hang > .lbo-part__body {
	padding-top: var(--lbo-space-4);
}

.lbo-wrap--icon > .lbo-style-h4,
.lbo-wrap--icon > .lbo-part__body > .lbo-style-h4:first-child,
.lbo-wrap--hang > .lbo-part__body > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child,
.lbo-wrap--hang > .lbo-part__body > section:first-child > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child {
	border-top: 0;
	padding-top: 0;
	margin-top: 0;
}

/* Numbered chapters 1–3: first heading keeps a measure-width rule, same pad as later H2s. Icon chapters already have the hang-line. */
.lbo-chapter:not(.lbo-part) .lbo-wrap:not(.lbo-wrap--icon) > .lbo-part__body > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child,
.lbo-chapter:not(.lbo-part) .lbo-wrap:not(.lbo-wrap--icon) > .lbo-part__body > section:first-child > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child,
.lbo-chapter:not(.lbo-part) .lbo-wrap:not(.lbo-wrap--icon) .lbo-part__body .wpb-content-wrapper > .vc_row:first-child .wpb_wrapper > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child {
	border-top: 1px solid var(--lbo-chapter);
	padding-top: 1.25rem;
	margin-top: 0;
}

/* Parts: first heading uses the same measure-width rule as later H2s. */
.lbo-part .lbo-chapter-body .lbo-wrap--hang > .lbo-part__body {
	padding-top: 0;
}

/* Introduction starts with body, not a heading, so restore a measure-width top rule. */
body[data-lbo-part="introduction"] .lbo-chapter-body .lbo-wrap--hang > .lbo-part__body {
	border-top: 1px solid var(--lbo-chapter);
	padding-top: 1.25rem;
}

.lbo-part.lbo-chapter .lbo-wrap--hang > .lbo-part__body > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child,
.lbo-part.lbo-chapter .lbo-wrap--hang > .lbo-part__body > section:first-child > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child {
	border-top: 1px solid var(--lbo-chapter);
	padding-top: 1.25rem;
	margin-top: 0;
}

.lbo-chapter-mark {
	margin: 0 0 var(--lbo-space-6);
	padding: 0;
	width: calc(var(--lbo-space-column) + var(--lbo-rail));
	max-width: 100%;
	background: var(--lbo-chapter-tint);
	border-top: 1px solid var(--lbo-chapter);
	line-height: 0;
}

.lbo-chapter-mark__icon {
	display: block;
	width: 100%;
	height: auto;
	margin: 0;
}

.lbo-chapter-mark[data-lbo-anchor] {
	background: transparent;
	border-top: 0;
}

.lbo-chapter .lbo-wrap > section:first-child .lbo-style-h1,
.lbo-chapter .lbo-wrap > section:first-child .lbo-style-h2,
.lbo-chapter .lbo-wrap > .lbo-part__body > section:first-child .lbo-style-h1,
.lbo-chapter .lbo-wrap > .lbo-part__body > section:first-child .lbo-style-h2,
.lbo-chapter .lbo-wrap > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child,
.lbo-chapter .lbo-wrap > .lbo-part__body > :is(.lbo-style-h1, .lbo-style-h2, .lbo-style-h3, .lbo-style-h4):first-child {
	margin-top: 0;
}

.lbo-chapter-rule {
	display: none;
}

.lbo-chapter-rule--end {
	display: none;
}

@media (min-width: 48rem) {
	.lbo-chapter-body {
		display: grid;
		grid-template-columns: minmax(11rem, 1fr) var(--lbo-space-column) minmax(0, 2fr);
		column-gap: 0;
		align-items: start;
	}

	.lbo-chapter-body > .lbo-submenu {
		grid-column: 1;
		position: sticky;
		top: calc(var(--lbo-bar-height) + var(--lbo-space-chrome));
	}

	.lbo-chapter-body > .lbo-wrap {
		grid-column: 3;
		min-width: 0;
		max-width: var(--lbo-measure);
	}

	body.lbo-opener-simple .lbo-chapter-body {
		grid-template-rows: auto auto auto auto;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-opener__subtitle--wide {
		grid-column: 1 / -1;
		grid-row: 1;
		min-width: 0;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-opener-continue--wide {
		grid-column: 1 / -1;
		grid-row: 2;
		min-width: 0;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-figure--opener {
		grid-column: 1 / -1;
		grid-row: 3;
		min-width: 0;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-submenu,
	body.lbo-opener-simple .lbo-chapter-body > .lbo-wrap {
		grid-row: 4;
	}
}

/* Hang layout: both rails + 2fr measure. Starts at 72rem so the right rail
   does not drop while the left rail is still a wide 20rem track. */
@media (min-width: 72rem) {
	.lbo-chapter-body {
		width: calc(100% - (2 * var(--lbo-page-inset)));
		max-width: var(--lbo-chapter-max);
		margin-inline: auto;
		grid-template-columns: minmax(0, 1fr) var(--lbo-space-column) minmax(0, 2fr) var(--lbo-space-column) 1px var(--lbo-space-column) minmax(0, 1fr);
		padding-left: 0;
		padding-right: 0;
		overflow: visible;
		/* 1fr rails are narrower than 20rem until ~88rem. Hang-lines and sidebars must use that track. */
		--lbo-hang-rail: min(var(--lbo-rail), max(0px, calc((100vw - (2 * var(--lbo-page-inset)) - (3 * var(--lbo-space-column)) - 1px) / 4)));
	}

	.lbo-chapter-body > .lbo-submenu {
		grid-column: 1;
		grid-row: 1;
		justify-self: stretch;
		width: 100%;
		max-width: none;
	}

	.lbo-chapter-rule--end {
		display: block;
		grid-column: 5;
		grid-row: 1;
		align-self: start;
		position: sticky;
		top: var(--lbo-bar-height);
		width: 1px;
		height: calc(100dvh - var(--lbo-bar-height));
		max-height: 100%;
		background: var(--lbo-chapter);
		pointer-events: none;
	}

	.lbo-chapter-body > .lbo-wrap {
		grid-column: 3;
		grid-row: 1;
		min-width: 0;
		position: relative;
		overflow: visible;
	}

	.lbo-chapter-body .lbo-case,
	.lbo-chapter-body .lbo-figure,
	.lbo-chapter-body .lbo-box,
	.lbo-chapter-body .lbo-callout,
	.lbo-chapter-body .lbo-table-wrap {
		position: relative;
	}

	.lbo-chapter-body .lbo-case {
		display: block;
		border-top: 0;
		padding-top: 0;
	}

	.lbo-chapter-body .lbo-box,
	.lbo-chapter-body .lbo-callout {
		border-top: 0;
	}

	.lbo-chapter-body .lbo-case .lbo-figure {
		margin: 0;
	}

	.lbo-chapter-body .lbo-figure > figcaption,
	.lbo-chapter-body .lbo-fn-margin {
		position: absolute;
		left: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column));
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: 0;
		z-index: 1;
	}

	.lbo-chapter-body .lbo-figure > figcaption {
		top: 0;
		padding-top: var(--lbo-space-2);
		padding-bottom: var(--lbo-space-2);
		border-top: 0;
		border-bottom: 1px solid var(--lbo-chapter);
		color: var(--lbo-ink);
	}

	.lbo-chapter-body .lbo-case__main {
		width: calc(100% + var(--lbo-space-column));
		max-width: none;
	}

	.lbo-chapter-body .lbo-figure > img,
	.lbo-chapter-body .lbo-figure > .lbo-figure__placeholder {
		width: calc(100% + var(--lbo-space-column));
		max-width: none;
	}

	.lbo-chapter-body .lbo-case .lbo-figure > img,
	.lbo-chapter-body .lbo-case .lbo-figure > .lbo-figure__placeholder {
		width: 100%;
	}

	.lbo-chapter-body .lbo-case__box {
		padding-right: var(--lbo-space-column);
		padding-bottom: 1.35rem;
	}

	.lbo-chapter-body .lbo-case .lbo-sidebar {
		position: absolute;
		top: 0;
		left: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column));
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: 0;
		z-index: 1;
		color: var(--lbo-ink);
	}

	/* Box already hangs one gutter; rail starts after the hang-line + column. */
	.lbo-chapter-body .lbo-box > .lbo-sidebar {
		position: absolute;
		top: 0;
		left: calc(100% + 1px + var(--lbo-space-column));
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: 0;
		z-index: 1;
		color: var(--lbo-ink);
	}

	.lbo-chapter-body .lbo-case .lbo-sidebar > :first-child,
	.lbo-chapter-body .lbo-box > .lbo-sidebar > :first-child,
	.lbo-chapter-body .lbo-table-wrap > .lbo-sidebar > :first-child {
		border-top: 0;
		padding-top: var(--lbo-space-2);
	}

	.lbo-chapter-body .lbo-table-wrap > .lbo-sidebar {
		position: absolute;
		top: 0;
		left: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column));
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: 0;
		z-index: 1;
		color: var(--lbo-ink);
	}

	.lbo-wrap--hang > .lbo-part__body {
		position: relative;
	}

	.lbo-wrap--hang > .lbo-part__body > .lbo-sidebar {
		position: absolute;
		top: 0;
		left: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column));
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: 0;
		z-index: 1;
		color: var(--lbo-ink);
	}

	.lbo-wrap--hang > .lbo-part__body > .lbo-sidebar > :first-child {
		border-top: 0;
		padding-top: var(--lbo-space-2);
	}

	.lbo-chapter-body .lbo-box,
	.lbo-chapter-body .lbo-callout {
		width: calc(100% + var(--lbo-space-column));
		max-width: none;
		margin-right: calc(-1 * var(--lbo-space-column));
		padding-right: calc(1.35rem + var(--lbo-space-column));
	}

	.lbo-chapter-body .lbo-box--target,
	.lbo-chapter-body .lbo-callout {
		padding-right: calc(1.5rem + var(--lbo-space-column));
	}

	/* Hang padding only. Inner rules then share the column’s right edge. */
	.lbo-chapter-body .lbo-box,
	.lbo-chapter-body .lbo-box--target {
		padding-right: var(--lbo-space-column);
	}

	.lbo-chapter-body .lbo-box__heading,
	.lbo-chapter-body .lbo-box__body,
	.lbo-chapter-body .lbo-box__body p,
	.lbo-chapter-body .lbo-box__body ul,
	.lbo-chapter-body .lbo-box__body ol,
	.lbo-chapter-body .lbo-callout__heading,
	.lbo-chapter-body .lbo-callout__body,
	.lbo-chapter-body .lbo-callout__body p,
	.lbo-chapter-body .lbo-case__title,
	.lbo-chapter-body .lbo-case__summary,
	.lbo-chapter-body .lbo-case__summary p,
	.lbo-chapter-body .lbo-case__summary blockquote,
	.lbo-chapter-body .lbo-case__summary cite,
	.lbo-chapter-body .lbo-case__summary h3,
	.lbo-chapter-body .lbo-case__summary ul,
	.lbo-chapter-body .lbo-case__summary ol {
		max-width: var(--lbo-measure);
	}

	.lbo-chapter-body .lbo-case::before,
	.lbo-chapter-body .lbo-figure:has(> figcaption)::before,
	.lbo-chapter-body .lbo-box::before,
	.lbo-chapter-body .lbo-callout::before,
	.lbo-chapter-body .lbo-table-wrap--rail::before {
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		height: 1px;
		background: var(--lbo-chapter);
		pointer-events: none;
		z-index: 2;
	}

	.lbo-chapter-body .lbo-case::before,
	.lbo-chapter-body .lbo-figure:has(> figcaption)::before,
	.lbo-chapter-body .lbo-table-wrap--rail::before {
		width: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column) + var(--lbo-hang-rail));
	}

	.lbo-chapter-body .lbo-box::before,
	.lbo-chapter-body .lbo-callout::before {
		width: calc(100% + 1px + var(--lbo-space-column) + var(--lbo-hang-rail));
	}

	.lbo-chapter-body .lbo-wrap--icon,
	.lbo-chapter-body .lbo-wrap--hang {
		border-top: 0;
	}

	.lbo-chapter-body .lbo-wrap--icon::before,
	.lbo-chapter-body .lbo-wrap--hang::before {
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		height: 1px;
		width: calc(100% + var(--lbo-space-column) + 1px + var(--lbo-space-column) + var(--lbo-hang-rail));
		background: var(--lbo-chapter);
		pointer-events: none;
		z-index: 2;
	}

	/* Quote already drew the hang-line. Do not repeat it above the first heading. */
	.lbo-chapter-body:has(> .lbo-opener-continue--wide.lbo-wrap--hang) > .lbo-wrap.lbo-wrap--hang::before,
	.lbo-part .lbo-chapter-body > .lbo-wrap--hang::before {
		content: none;
		display: none;
		width: 0;
	}

	/* Publication details: a rule on each column, not one line across the gutter. */
	.lbo-part .lbo-chapter-body > .lbo-wrap--hang:has(> .lbo-part__body > .lbo-sidebar) > .lbo-part__body {
		border-top: 1px solid var(--lbo-chapter);
	}

	.lbo-part .lbo-chapter-body > .lbo-wrap--hang:has(> .lbo-part__body > .lbo-sidebar) > .lbo-part__body > .lbo-sidebar > :first-child {
		border-top: 1px solid var(--lbo-chapter);
	}

	.lbo-chapter-body .lbo-chapter-mark {
		position: absolute;
		left: calc(100% + var(--lbo-space-column) + 1px);
		top: 0;
		width: calc(var(--lbo-space-column) + var(--lbo-hang-rail));
		max-width: none;
		margin: 0;
		padding: 0;
		border-top: 0;
		background: var(--lbo-chapter-tint);
	}

	.lbo-chapter-body .lbo-chapter-mark[data-lbo-anchor] {
		background: transparent;
	}

	.lbo-chapter-body .lbo-chapter-mark[data-lbo-anchor] .lbo-sidebar {
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
		margin: var(--lbo-space-2) 0 0 var(--lbo-space-column);
	}

	.lbo-wrap--icon > .lbo-part__body > .lbo-style-h4:first-child,
	.lbo-wrap--icon > .lbo-part__body > .lbo-style-body:first-child,
	.lbo-wrap--icon > .lbo-style-h4:first-child {
		min-height: calc(var(--lbo-space-column) + var(--lbo-hang-rail) - var(--lbo-space-4));
	}

	.lbo-wrap--icon > .lbo-part__body > .lbo-style-h4:first-child + :is(.lbo-box, .lbo-case, .lbo-figure, .lbo-callout),
	.lbo-wrap--icon > .lbo-part__body > .lbo-style-body:first-child + :is(.lbo-box, .lbo-case, .lbo-figure, .lbo-callout),
	.lbo-wrap--icon > .lbo-style-h4:first-child + :is(.lbo-box, .lbo-case, .lbo-figure, .lbo-callout) {
		margin-top: var(--lbo-space-copy-break);
	}

	.lbo-wrap--icon > .lbo-part__body > :is(.lbo-box, .lbo-case, .lbo-figure, .lbo-callout):first-child,
	.lbo-wrap--icon > :is(.lbo-box, .lbo-case, .lbo-figure, .lbo-callout):first-child {
		margin-top: calc(var(--lbo-space-column) + var(--lbo-hang-rail) + var(--lbo-space-copy-break));
	}

	.lbo-chapter-body .lbo-wrap--below > .lbo-part__body,
	.lbo-chapter-body .lbo-wrap--below > .lbo-style-h4 {
		padding-top: 0;
	}

	.lbo-chapter-body .lbo-opener-continue__rail {
		position: absolute;
		left: calc(100% + var(--lbo-space-column) + 1px);
		top: 0;
		width: calc(var(--lbo-space-column) + var(--lbo-hang-rail));
		margin-top: 0;
	}

	.lbo-chapter-body .lbo-opener-continue__meta {
		margin: 0 0 var(--lbo-space-6) var(--lbo-space-column);
		width: var(--lbo-hang-rail);
		max-width: var(--lbo-hang-rail);
	}

	.lbo-chapter-body .lbo-opener-continue__meta > :first-child {
		border-top: 0;
		padding-top: var(--lbo-space-2);
	}

	.lbo-chapter-body .lbo-wrap--below .lbo-chapter-mark {
		position: relative;
		left: auto;
		top: auto;
		width: 100%;
		max-width: none;
		margin: 0;
	}

	body.lbo-opener-simple .lbo-chapter-body {
		grid-template-rows: auto auto auto auto;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-opener__subtitle--wide {
		grid-column: 1 / -1;
		grid-row: 1;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-opener-continue--wide {
		grid-column: 1 / 4;
		grid-row: 2;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-figure--opener {
		grid-column: 1 / 4;
		grid-row: 3;
	}

	body.lbo-opener-simple .lbo-chapter-body > .lbo-submenu,
	body.lbo-opener-simple .lbo-chapter-body > .lbo-wrap {
		grid-row: 4;
	}

	body.lbo-opener-simple .lbo-chapter-rule--end {
		grid-row: 2 / -1;
	}

	.lbo-chapter-body .lbo-chapter-mark__icon {
		display: block;
		width: 100%;
		max-width: none;
		height: auto;
		margin: 0;
	}
}

/* Stacked / no right rail: drop case and target hang-lines. Hang chapters keep a full-column rule above the intro. Icon chapters do not: that rule would sit on the icon. Chapter icons fill the column; heading portraits stay full measure. */
@media (max-width: 71.99rem) {
	.lbo-chapter-body .lbo-case::before,
	.lbo-chapter-body .lbo-figure:has(> figcaption)::before,
	.lbo-chapter-body .lbo-box::before,
	.lbo-chapter-body .lbo-callout::before,
	.lbo-chapter-body .lbo-table-wrap--rail::before {
		display: none;
		width: 0;
		content: none;
	}

	.lbo-chapter-body .lbo-case,
	.lbo-chapter-body .lbo-box,
	.lbo-chapter-body .lbo-box--target,
	.lbo-chapter-body .lbo-callout,
	.lbo-chapter-mark {
		border-top: 0;
	}

	/* Icon chapters: the mark is the first thing in the column, so a rule here would sit on the icon. The full-width rule stays at 72rem, where the icon is in the right rail. */
	.lbo-chapter-body .lbo-wrap--hang {
		border-top: 1px solid var(--lbo-chapter);
	}

	.lbo-part .lbo-chapter-body > .lbo-wrap--hang {
		border-top: 0;
	}

	.lbo-part .lbo-chapter-body > .lbo-wrap--hang:has(> .lbo-part__body > .lbo-sidebar) > .lbo-part__body {
		border-top: 1px solid var(--lbo-chapter);
	}

	.lbo-chapter-body:has(> .lbo-opener-continue--wide.lbo-wrap--hang) > .lbo-wrap.lbo-wrap--hang {
		border-top: 0;
	}

	.lbo-chapter-body .lbo-chapter-mark {
		display: block;
		position: relative;
		left: auto;
		top: auto;
		width: 100%;
		max-width: 100%;
		margin: 0 0 var(--lbo-space-6);
	}

	/* Chapter icons fill the column. Block, so the intro starts underneath. */
	.lbo-chapter-body .lbo-chapter-mark:not([data-lbo-anchor]) {
		width: 100%;
		max-width: 100%;
	}

	.lbo-chapter-body .lbo-chapter-mark[data-lbo-anchor] {
		background: transparent;
	}

	.lbo-chapter-body .lbo-chapter-mark[data-lbo-anchor] .lbo-sidebar {
		width: 100%;
		max-width: 100%;
		margin: var(--lbo-space-2) 0 0;
	}

	.lbo-chapter-body .lbo-chapter-mark__icon {
		display: block;
		width: 100%;
		max-width: 100%;
		height: auto;
		aspect-ratio: 1;
		object-fit: contain;
	}

	/* Stacked box / case rails: heading already carries the number. Keep table and other kickers. */
	.lbo-box > .lbo-sidebar > .lbo-sidebar__kicker,
	.lbo-case .lbo-sidebar > .lbo-sidebar__kicker {
		display: none;
	}

	.lbo-box > .lbo-sidebar:has(> .lbo-sidebar__kicker:only-child),
	.lbo-case .lbo-sidebar:has(> .lbo-sidebar__kicker:only-child) {
		display: none;
	}

	.lbo-box > .lbo-sidebar > .lbo-sidebar__kicker + *,
	.lbo-case .lbo-sidebar > .lbo-sidebar__kicker + * {
		border-top: 1px solid var(--lbo-chapter);
	}
}

@media (min-width: 88rem) {
	.lbo-chapter-body {
		--lbo-hang-rail: var(--lbo-rail);
		grid-template-columns: var(--lbo-rail) var(--lbo-space-column) minmax(0, 1fr) var(--lbo-space-column) 1px var(--lbo-space-column) var(--lbo-rail);
	}
}

.lbo-layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: 2rem;
	max-width: 68rem;
	margin: 0 auto;
	padding: 0 var(--lbo-gutter);
}

@media (min-width: 64rem) {
	.lbo-layout {
		grid-template-columns: minmax(0, 40rem) 14rem;
	}
}

.lbo-nav__info .lbo-colophon {
	margin: 0;
}

.lbo-noscript {
	padding: 2rem var(--lbo-gutter);
	border-top: 1px solid var(--lbo-rule);
	font-family: var(--lbo-font-sans);
	font-size: 1rem;
}

.lbo-noscript__links ul {
	display: flex;
	flex-direction: column;
	gap: 0.85rem;
	margin: 0 0 1.5rem;
	padding: 0;
	list-style: none;
}

.lbo-noscript a {
	color: inherit;
}

.lbo-noscript .lbo-colophon {
	margin: 0.4rem 0 0;
}

.lbo-noscript .lbo-colophon:first-of-type {
	margin-top: 0;
}

html {
	cursor: url("../images/cursor.png") 8 8, auto;
}

html.lbo-cursor-on,
html.lbo-cursor-on * {
	cursor: none !important;
}

.lbo-cursor {
	position: fixed;
	top: 0;
	left: 0;
	z-index: 10000;
	width: 0.75rem;
	height: 0.75rem;
	border-radius: 50%;
	overflow: hidden;
	background: #000000;
	pointer-events: none;
	opacity: 0;
	transition: width 0.16s ease, height 0.16s ease;
}

.lbo-cursor.is-on-bar {
	background: #ffffff;
}

body.home .lbo-cursor,
body.front-page .lbo-cursor {
	background: #ffffff;
}

html.lbo-nav-open .lbo-cursor,
body.lbo-nav-open .lbo-cursor,
html.lbo-search-open .lbo-cursor,
body.lbo-search-open .lbo-cursor {
	background: #000000;
}

.lbo-cursor.is-on {
	opacity: 1;
}

.lbo-cursor.is-clickable {
	width: 1.35rem;
	height: 1.35rem;
}

@media (prefers-reduced-motion: reduce) {
	.lbo-cursor {
		transition: none;
	}
}

@media print {
	html,
	html.lbo-cursor-on,
	html.lbo-cursor-on * {
		cursor: auto !important;
	}

	.lbo-cursor {
		display: none;
	}
}

html.lbo-cookies-ok .lbo-cookies,
.lbo-cookies[hidden] {
	display: none;
}

/* Same inset as .lbo-bar / chapter chrome. Do not re-add --lbo-chapter-max. */
.lbo-cookies {
	position: fixed;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 45;
	padding: 1rem var(--lbo-page-inset) calc(1rem + env(safe-area-inset-bottom, 0px));
	background: var(--lbo-paper);
	color: var(--lbo-ink);
	border-top: 1px solid var(--lbo-ink);
	font-family: var(--lbo-font-sans);
}

.lbo-cookies__inner {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	justify-content: space-between;
	gap: 1rem 1.5rem;
}

.lbo-cookies__copy {
	flex: 1 1 18rem;
	min-width: 0;
}

.lbo-cookies__title {
	margin: 0;
	font-family: var(--lbo-font-sans);
	font-size: 1rem;
	font-weight: 500;
	line-height: var(--lbo-leading-heading);
}

.lbo-cookies__text {
	margin: 0;
	font-size: 0.875rem;
	line-height: var(--lbo-leading-sans);
}

.lbo-cookies__text a {
	color: inherit;
	text-decoration: underline;
	text-underline-offset: 0.15em;
}

.lbo-cookies__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin: 0;
	margin-inline-start: auto;
}

.lbo-using-keyboard .lbo-cookies :focus-visible {
	outline: 2px solid var(--lbo-ink);
	outline-offset: 3px;
}

html.lbo-cookies-over body.home .lbo-cursor,
html.lbo-cookies-over body.front-page .lbo-cursor {
	background: #000000;
}

html.lbo-cookies-over body.home .lbo-cursor.is-on-bar,
html.lbo-cookies-over body.front-page .lbo-cursor.is-on-bar {
	background: #ffffff;
}

body.home:has(#lbo-cookies:not([hidden])) .lbo-cover,
body.front-page:has(#lbo-cookies:not([hidden])) .lbo-cover {
	padding-bottom: 7.5rem;
}

@media (prefers-reduced-motion: reduce) {
	.lbo-cookies {
		transition: none;
	}
}

@media print {
	.lbo-cookies {
		display: none;
	}
}