/* Keynote Section 03 — living editorial topic index. */
.ys-landing--speaker .topic-browser {
	--topic-ease: cubic-bezier(0.22, 1, 0.36, 1);
	--topic-ink: #211513;
	--topic-muted: rgba(33, 21, 19, 0.68);
	--topic-olive: #55583a;
	--topic-paper: #f7f4ea;
	--topic-rust: #c86659;
	--topic-rule: rgba(33, 21, 19, 0.24);
	background: var(--topic-paper);
	color: var(--topic-ink);
	min-height: 100vh;
	overflow: clip;
	padding: 0;
	position: relative;
}

.ys-landing--speaker .topic-browser::before {
	display: none;
}

.topic-browser__frame {
	border-top: 1px solid var(--topic-rule);
	display: grid;
	gap: clamp(3rem, 5vw, 5.5rem);
	grid-template-columns: repeat(12, minmax(0, 1fr));
	margin: 0 auto;
	max-width: 100rem;
	min-height: 100vh;
	padding: clamp(2.5rem, 4vw, 4.5rem) clamp(2rem, 4vw, 4.5rem) clamp(4rem, 7vw, 7rem);
	position: relative;
}

.topic-browser__intro {
	align-self: start;
	grid-column: 1 / span 4;
	position: sticky;
	top: clamp(2rem, 5vh, 4rem);
}

.topic-browser__heading {
	grid-template-columns: minmax(0, 1fr);
	margin: 0;
}

.ys-landing--speaker .topic-browser__heading .ys-landing__section-title {
	max-width: none;
}

.topic-browser__title-line {
	display: block;
	white-space: nowrap;
}

.topic-browser__list {
	align-self: start;
	grid-column: 5 / -1;
}

.topic-browser__item {
	border-bottom: 1px solid var(--topic-rule);
	position: relative;
	transition: border-color 420ms var(--topic-ease);
}

.topic-browser__item:first-child {
	border-top: 1px solid var(--topic-rule);
}

.topic-browser__item::before {
	background: var(--topic-rust);
	content: "";
	height: 1px;
	left: 0;
	position: absolute;
	top: -1px;
	transform: scaleX(0);
	transform-origin: left center;
	transition: transform 260ms var(--topic-ease);
	width: 100%;
}

.topic-browser__item:is(:hover, :focus-within)::before,
.topic-browser__item.is-active::before {
	transform: scaleX(1);
}

.topic-browser__item.is-active {
	border-bottom-color: var(--topic-rust);
}

.topic-browser__item-heading {
	font: inherit;
	margin: 0;
}

.topic-browser__trigger {
	align-items: center;
	appearance: none;
	background: transparent;
	border: 0;
	color: inherit;
	cursor: pointer;
	display: grid;
	font: inherit;
	gap: clamp(1rem, 2vw, 2rem);
	grid-template-columns: clamp(2rem, 3vw, 3.5rem) minmax(0, 1fr) auto;
	min-height: clamp(5.75rem, 8vw, 7.5rem);
	padding: clamp(1.25rem, 2vw, 1.8rem) 0;
	text-align: left;
	width: 100%;
}

.topic-browser__trigger:focus-visible {
	outline: 2px solid var(--topic-rust);
	outline-offset: 3px;
}

.topic-browser__index {
	color: var(--topic-olive);
	font-size: clamp(0.875rem, 1.1vw, 1.05rem);
	font-variant-numeric: tabular-nums;
	font-weight: 600;
	transition: color 220ms ease;
}

.topic-browser__topic-title {
	font-size: clamp(1.5rem, 1.8vw, 2.25rem);
	font-weight: 600;
	letter-spacing: -0.025em;
	line-height: 1.05;
	transition: color 220ms ease, transform 240ms var(--topic-ease);
}

.topic-browser__arrow {
	height: clamp(1.35rem, 2vw, 1.8rem);
	overflow: visible;
	stroke: currentColor;
	stroke-width: 1.35;
	transition: color 220ms ease, transform 260ms var(--topic-ease);
	width: clamp(1.35rem, 2vw, 1.8rem);
}

.topic-browser__item:is(:hover, :focus-within) .topic-browser__index,
.topic-browser__item:is(:hover, :focus-within) .topic-browser__arrow,
.topic-browser__item.is-active .topic-browser__index,
.topic-browser__item.is-active .topic-browser__arrow {
	color: var(--topic-rust);
}

.topic-browser__item:is(:hover, :focus-within) .topic-browser__topic-title {
	transform: translateX(0.45rem);
}

.topic-browser__item:is(:hover, :focus-within) .topic-browser__arrow {
	transform: translate(0.25rem, -0.25rem);
}

.topic-browser__item.is-active .topic-browser__arrow {
	transform: rotate(45deg);
}

.topic-browser__panel {
	display: grid;
	grid-template-rows: 1fr;
	opacity: 1;
	transition: grid-template-rows 520ms var(--topic-ease), opacity 320ms ease;
}

.topic-browser__panel[hidden] {
	display: none;
}

.topic-browser.is-topic-browser-ready .topic-browser__panel {
	grid-template-rows: 0fr;
	opacity: 0;
}

.topic-browser.is-topic-browser-ready .topic-browser__item.is-active .topic-browser__panel {
	grid-template-rows: 1fr;
	opacity: 1;
}

.topic-browser__panel-inner {
	display: grid;
	gap: clamp(1.5rem, 3vw, 3rem);
	grid-template-columns: minmax(0, 1.1fr) minmax(13rem, 0.9fr);
	overflow: hidden;
	padding: 0 0 clamp(2rem, 3.5vw, 3.5rem) clamp(3rem, 5vw, 5.5rem);
}

.topic-browser__description {
	align-self: center;
	color: var(--topic-muted);
	font-size: clamp(1.05rem, 1.15vw, 1.3rem);
	line-height: 1.55;
	margin: 0;
	max-width: 35rem;
}

.topic-browser__contour {
	align-self: center;
	justify-self: end;
	max-height: 11rem;
	max-width: 24rem;
	overflow: visible;
	transform: rotate(var(--topic-contour-rotation, 0deg));
	width: 100%;
}

.topic-browser__contour--1 {
	--topic-contour-rotation: -5deg;
}

.topic-browser__contour--2 {
	--topic-contour-rotation: 3deg;
}

.topic-browser__contour--3 {
	--topic-contour-rotation: -2deg;
}

.topic-browser__contour--4 {
	--topic-contour-rotation: 7deg;
}

.topic-browser__contour--5 {
	--topic-contour-rotation: -8deg;
}

.topic-browser__contour--6 {
	--topic-contour-rotation: 1deg;
}

.topic-browser__contour-lines {
	stroke: var(--topic-rust);
	stroke-opacity: 0.68;
	stroke-width: 1.15;
}

.topic-browser__contour-lines path {
	stroke-dasharray: 1;
	stroke-dashoffset: 1;
	transition: stroke-dashoffset 820ms var(--topic-ease);
	transition-delay: calc(var(--contour-index, 0) * 45ms);
	vector-effect: non-scaling-stroke;
}

.topic-browser__contour-lines path:nth-child(1) {
	--contour-index: 0;
}

.topic-browser__contour-lines path:nth-child(2) {
	--contour-index: 1;
}

.topic-browser__contour-lines path:nth-child(3) {
	--contour-index: 2;
}

.topic-browser__contour-lines path:nth-child(4) {
	--contour-index: 3;
}

.topic-browser__contour-lines path:nth-child(5) {
	--contour-index: 4;
}

.topic-browser__contour-lines path:nth-child(6) {
	--contour-index: 5;
}

.topic-browser__item.is-active .topic-browser__contour-lines path {
	stroke-dashoffset: 0;
}

.topic-browser__orb {
	fill: var(--topic-rust);
	opacity: 0;
	transform: scale(0.7);
	transform-box: fill-box;
	transform-origin: center;
	transition: opacity 380ms ease 280ms, transform 680ms var(--topic-ease) 280ms;
}

.topic-browser__item.is-active .topic-browser__orb {
	opacity: 1;
	transform: scale(1);
}

.topic-browser.is-topic-browser-ready:not(.is-entered) .topic-browser__frame {
	border-top-color: transparent;
}

.topic-browser.is-topic-browser-ready:not(.is-entered) .topic-browser__heading,
.topic-browser.is-topic-browser-ready:not(.is-entered) .topic-browser__item {
	opacity: 0;
	transform: translateY(0.5rem);
}

.topic-browser.is-topic-browser-ready .topic-browser__frame {
	transition: border-color 600ms var(--topic-ease);
}

.topic-browser.is-topic-browser-ready .topic-browser__heading {
	transition: opacity 400ms ease, transform 500ms var(--topic-ease);
}

.topic-browser.is-topic-browser-ready .topic-browser__item {
	transition: border-color 420ms var(--topic-ease), opacity 420ms ease, transform 520ms var(--topic-ease);
	transition-delay: calc(var(--topic-row-index, 0) * 45ms);
}

@media screen and (max-width: 1099px) {

	.topic-browser__frame {
		grid-template-columns: repeat(8, minmax(0, 1fr));
	}

	.topic-browser__intro {
		grid-column: 1 / -1;
		position: static;
	}


	.topic-browser__list {
		grid-column: 2 / -1;
	}

	.topic-browser__panel-inner {
		grid-template-columns: minmax(0, 1.2fr) minmax(12rem, 0.8fr);
	}
}

@media screen and (max-width: 767px) {

	.topic-browser__frame {
		display: block;
		padding-inline: clamp(1.25rem, 6vw, 2.5rem);
	}

	.topic-browser__intro {
		margin-bottom: clamp(3rem, 12vw, 5rem);
	}

	.topic-browser__trigger {
		gap: 0.8rem;
		grid-template-columns: 2rem minmax(0, 1fr) 1.5rem;
		min-height: 4.5rem;
		padding-block: 1.15rem;
	}

	.topic-browser__index {
		font-size: 0.875rem;
	}

	.topic-browser__topic-title {
		font-size: clamp(1.3rem, 6vw, 1.7rem);
	}

	.topic-browser__panel-inner {
		display: block;
		padding: 0 0 2rem 2.8rem;
	}

	.topic-browser__description {
		font-size: 1rem;
	}

	.topic-browser__contour {
		display: block;
		margin-top: 1.5rem;
		max-height: 8rem;
		max-width: none;
		width: 100%;
	}
}

@media (prefers-reduced-motion: reduce) {

	.topic-browser__item,
	.topic-browser__heading,
	.topic-browser__panel,
	.topic-browser__topic-title,
	.topic-browser__arrow,
	.topic-browser__contour-lines path,
	.topic-browser__orb {
		transition: none !important;
	}

	.topic-browser.is-topic-browser-ready:not(.is-entered) .topic-browser__heading,
	.topic-browser.is-topic-browser-ready:not(.is-entered) .topic-browser__item {
		opacity: 1;
		transform: none;
	}
}

@media (forced-colors: active) {

	.topic-browser__item,
	.topic-browser__item:first-child,
	.topic-browser__trigger {
		border-color: canvastext;
	}
}