/* Homepage story: chapters scroll past and fill word by word beside a sticky energy rail. */
.seamkt-story {
	--story-ink: #111;
	--story-dim: #9a9a9a;
	--story-line: #e4e4e4;
	--story-paper: #fff;
	--story-sans: var(--seamkt-font);
	--energy: 0;
	position: relative;
	isolation: isolate;
	background: var(--story-paper);
	color: var(--story-ink);
	font-family: var(--story-sans);
}

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

.seamkt-story__sr {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	overflow: hidden;
	clip: rect(0 0 0 0);
	white-space: nowrap;
}

.seamkt-story__layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	max-width: 1760px;
	margin: 0 auto;
	padding: clamp(80px, 12vw, 160px) clamp(24px, 3vw, 60px);
}

/* Without JS there is no rail; the chapters simply read top to bottom. */
.seamkt-story__rail {
	display: none;
}

.seamkt-story__chapters {
	display: grid;
	gap: clamp(200px, 45svh, 440px);
}

.seamkt-story__chapter {
	--fill: 0;
	display: grid;
	grid-template-columns: minmax(0, 1fr) clamp(250px, 21vw, 330px);
	align-items: start;
	gap: clamp(48px, 7vw, 160px);
}

.seamkt-story .seamkt-story__text {
	max-width: 23em;
	margin: 0;
	color: var(--story-ink);
	font-family: inherit;
	font-size: clamp(22px, 2.1vw, 36px);
	font-weight: 400;
	line-height: 1.22;
	letter-spacing: -0.026em;
	text-wrap: pretty;
	font-kerning: normal;
}

/* Right-hand caption: an index line that charges with the paragraph, a bold title, a quiet list. */
.seamkt-story__meta {
	position: sticky;
	top: 38svh;
	padding-top: 0.45em;
	font-size: 15px;
	line-height: 1.4;
}

.seamkt-story .seamkt-story__index {
	display: flex;
	align-items: center;
	gap: 14px;
	margin: 0;
	font-size: 13px;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.08em;
	line-height: 1;
}

.seamkt-story__count {
	color: var(--story-ink);
}

.seamkt-story__total {
	color: var(--story-dim);
}

.seamkt-story__progress {
	position: relative;
	flex: 1;
	height: 1px;
	overflow: hidden;
	background: var(--story-line);
}

.seamkt-story__progress span {
	position: absolute;
	inset: 0;
	background: var(--story-ink);
	transform: scaleX(var(--fill));
	transform-origin: left center;
}

.seamkt-story .seamkt-story__title {
	margin: 22px 0 26px;
	padding: 0;
	color: var(--story-ink);
	font-family: var(--story-sans);
	font-size: clamp(22px, 1.7vw, 28px);
	font-weight: 500;
	line-height: 1.1;
	letter-spacing: -0.03em;
	text-transform: none;
}

.seamkt-story__tags {
	margin: 0;
	padding: 0;
	list-style: none;
	counter-reset: story-tag;
}

.seamkt-story__tags li {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 16px;
	margin: 0;
	padding: 15px 0;
	border-top: 1px solid var(--story-line);
	color: #4a4a4a;
	font-size: 17px;
	font-weight: 500;
	counter-increment: story-tag;
}

.seamkt-story__tags li:last-child {
	border-bottom: 1px solid var(--story-line);
}

.seamkt-story__tags li::after {
	color: #bdbdbd;
	font-size: 13px;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.08em;
	content: counter(story-tag, decimal-leading-zero);
}

.seamkt-story__cta {
	display: inline-flex;
	align-items: center;
	gap: 14px;
	margin-top: 30px;
	padding: 16px 22px 16px 26px;
	border-radius: 999px;
	background: var(--story-ink);
	color: #fff;
	font-size: 15px;
	font-weight: 600;
	letter-spacing: 0;
	text-decoration: none;
	transition: background 250ms ease, transform 250ms ease;
}

.seamkt-story__cta svg {
	width: 18px;
	height: 18px;
	fill: none;
	stroke: currentColor;
	stroke-width: 1.8;
	stroke-linecap: round;
	stroke-linejoin: round;
	transition: transform 250ms ease;
}

.seamkt-story__cta:hover,
.seamkt-story__cta:focus-visible {
	background: #2b2b2b;
	color: #fff;
}

.seamkt-story__cta:hover svg,
.seamkt-story__cta:focus-visible svg {
	transform: translateX(4px);
}

.seamkt-story__cta:focus-visible {
	outline: 1px solid var(--story-ink);
	outline-offset: 4px;
}

/* Enhanced: words start faint and light up as they scroll past the reading line. */
.seamkt-story.is-enhanced .seamkt-story__layout {
	grid-template-columns: clamp(88px, 8vw, 140px) minmax(0, 1fr);
	column-gap: clamp(28px, 5vw, 100px);
	padding-top: clamp(120px, 22svh, 240px);
	padding-bottom: 0;
}

/* The trailing space lives inside the chapters' row so the pinned rail
   stays put until the last paragraph has finished filling (the last one ends with its bottom at 72% of the screen). */
.seamkt-story.is-enhanced .seamkt-story__chapters {
	padding-bottom: 36svh;
}

/* Lit through the alpha of the ink (story.js), not opacity: no transparency group per word.
   The short transition is what makes each word fade in: without it, every wheel step showed
   as a visible jump in brightness and the paragraph looked as if it flickered. */
.seamkt-story.is-enhanced .seamkt-story__word {
	color: rgba(17, 17, 17, 0.14);
	transition: color 180ms linear;
}

/* The caption only appears beside the paragraph being read, piece by piece. */
.seamkt-story.is-enhanced .seamkt-story__index,
.seamkt-story.is-enhanced .seamkt-story__title,
.seamkt-story.is-enhanced .seamkt-story__tags li,
.seamkt-story.is-enhanced .seamkt-story__cta {
	opacity: 0;
	filter: blur(6px);
	transform: translate3d(0, 16px, 0);
	transition:
		opacity 450ms ease,
		filter 450ms ease,
		transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1),
		background 250ms ease;
}

.seamkt-story.is-enhanced .seamkt-story__chapter:not(.is-current) .seamkt-story__meta {
	pointer-events: none;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current :is(.seamkt-story__index, .seamkt-story__title, .seamkt-story__tags li, .seamkt-story__cta) {
	opacity: 1;
	filter: none;
	transform: none;
	transition-duration: 700ms, 700ms, 900ms, 250ms;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current .seamkt-story__title {
	transition-delay: 90ms;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current .seamkt-story__tags li:nth-child(1) {
	transition-delay: 180ms;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current .seamkt-story__tags li:nth-child(2) {
	transition-delay: 240ms;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current .seamkt-story__tags li:nth-child(n + 3) {
	transition-delay: 300ms;
}

.seamkt-story.is-enhanced .seamkt-story__chapter.is-current .seamkt-story__cta {
	transition-delay: 400ms, 400ms, 400ms, 0ms;
}

/* Energy rail: a single hairline that charges in ink as the story is read. */
.seamkt-story.is-enhanced .seamkt-story__rail {
	position: sticky;
	top: 0;
	display: flex;
	align-items: center;
	align-self: start;
	height: 100svh;
	margin-top: calc(-1 * clamp(120px, 22svh, 240px));
}

.seamkt-story__energy {
	display: flex;
	flex-direction: column;
	gap: 22px;
}

.seamkt-story__energy-label {
	color: var(--story-dim);
	font-size: 11px;
	letter-spacing: 0.24em;
	text-transform: uppercase;
}

.seamkt-story__meter {
	position: relative;
	width: 48px;
	height: clamp(240px, 52svh, 520px);
}

.seamkt-story__meter-track,
.seamkt-story__meter-fill {
	position: absolute;
	top: 0;
	left: 4px;
	width: 1px;
}

.seamkt-story__meter-track {
	bottom: 0;
	background: var(--story-line);
}

.seamkt-story__meter-fill {
	width: 2px;
	height: calc(var(--energy) * 100%);
	margin-left: -0.5px;
	background: var(--story-ink);
}

/* The charging tip: a dot with a slow breathing halo. */
.seamkt-story__meter-head {
	position: absolute;
	z-index: 2;
	top: calc(var(--energy) * 100%);
	left: 4.5px;
	width: 9px;
	height: 9px;
	border-radius: 50%;
	background: var(--story-ink);
	box-shadow: 0 0 0 4px var(--story-paper);
	transform: translate(-50%, -50%);
}

.seamkt-story__meter-head::after {
	position: absolute;
	inset: -7px;
	border: 1px solid var(--story-ink);
	border-radius: 50%;
	opacity: 0;
	animation: seamkt-story-breathe 2.4s ease-out infinite;
	content: '';
}

@keyframes seamkt-story-breathe {
	0% {
		opacity: 0.35;
		transform: scale(0.5);
	}

	100% {
		opacity: 0;
		transform: scale(1.4);
	}
}

.seamkt-story__stop,
.seamkt-story__meter-end {
	position: absolute;
	left: 4.5px;
	width: 5px;
	height: 5px;
	border-radius: 50%;
	background: var(--story-line);
	transform: translate(-50%, -50%);
	transition: background 300ms ease;
}

.seamkt-story__stop {
	top: calc(var(--stop) * 100%);
}

.seamkt-story__meter-end {
	top: 100%;
}

.seamkt-story__stop.is-reached,
.seamkt-story__meter.is-full .seamkt-story__meter-end {
	background: var(--story-ink);
}

.seamkt-story__stop-num {
	position: absolute;
	top: 50%;
	left: 18px;
	color: #c4c4c4;
	font-size: 11px;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.06em;
	line-height: 1;
	transform: translateY(-50%);
	transition: color 300ms ease, transform 300ms ease;
}

.seamkt-story__stop.is-reached .seamkt-story__stop-num {
	color: var(--story-dim);
}

.seamkt-story__stop.is-current .seamkt-story__stop-num {
	color: var(--story-ink);
	transform: translate(4px, -50%);
}

.seamkt-story__energy-value {
	display: flex;
	align-items: flex-start;
	gap: 2px;
	margin-top: 6px;
	color: var(--story-ink);
	font-size: 30px;
	font-weight: 400;
	font-variant-numeric: tabular-nums;
	letter-spacing: -0.045em;
	line-height: 1;
}

.seamkt-story__energy-value small {
	margin-top: 3px;
	color: var(--story-dim);
	font-size: 12px;
	letter-spacing: 0;
}

@media (max-width: 1100px) {
	.seamkt-story__chapter {
		grid-template-columns: minmax(0, 1fr);
		gap: 22px;
	}

	.seamkt-story__meta {
		position: static;
		order: -1;
		padding-top: 0;
	}

	.seamkt-story .seamkt-story__index {
		max-width: 240px;
	}

	/* Stacked above its paragraph, a caption stays as a faint heading instead of vanishing. */
	.seamkt-story.is-enhanced .seamkt-story__chapter:not(.is-current) :is(.seamkt-story__index, .seamkt-story__title, .seamkt-story__tags li, .seamkt-story__cta) {
		opacity: 0.3;
		filter: none;
		transform: none;
	}

	.seamkt-story .seamkt-story__title {
		margin: 16px 0 10px;
	}

	.seamkt-story__tags {
		display: flex;
		flex-wrap: wrap;
	}

	.seamkt-story__tags li,
	.seamkt-story__tags li:last-child {
		padding: 0;
		border: 0;
		color: var(--story-dim);
	}

	.seamkt-story__tags li::after {
		content: none;
	}

	.seamkt-story__tags li + li::before {
		margin: 0 10px;
		color: #cfcfcf;
		content: '/';
	}

	.seamkt-story__cta {
		margin-top: 16px;
	}
}

/* Phones: the paragraph gets the full width and the energy rail becomes a floating dock
   that rides the bottom of the screen: one charging segment per chapter, its number and the value. */
@media (max-width: 767px) {
	/* No long trailing strip on phones: the dock lands just under the last paragraph instead. */
	.seamkt-story.is-enhanced .seamkt-story__layout {
		grid-template-columns: minmax(0, 1fr);
		gap: 40px 0;
		padding: clamp(52px, 9svh, 72px) 20px 32px;
	}

	.seamkt-story.is-enhanced .seamkt-story__chapters {
		padding-bottom: 0;
	}

	/* A light glass dock with one segment per chapter, each charging in turn. */
	.seamkt-story.is-enhanced .seamkt-story__rail {
		--story-count: 3;
		position: sticky;
		z-index: 4;
		top: auto;
		bottom: calc(14px + env(safe-area-inset-bottom, 0px));
		display: block;
		order: 2;
		height: auto;
		margin: 0;
		padding: 12px 18px;
		border-radius: 999px;
		background: rgba(255, 255, 255, 0.96);
		box-shadow:
			0 0 0 1px rgba(17, 17, 17, 0.06),
			0 12px 30px -12px rgba(17, 17, 17, 0.22);
	}

	.seamkt-story__energy {
		flex-direction: row;
		align-items: center;
		gap: 16px;
	}

	.seamkt-story__energy-label,
	.seamkt-story__meter-track,
	.seamkt-story__meter-fill,
	.seamkt-story__meter-head,
	.seamkt-story__meter-end {
		display: none;
	}

	.seamkt-story__meter {
		display: flex;
		flex: 1;
		gap: 12px;
		width: auto;
		height: auto;
	}

	.seamkt-story__stop {
		--seg: clamp(0, (var(--energy) - var(--stop)) * var(--story-count), 1);
		position: static;
		display: flex;
		flex: 1;
		align-items: center;
		gap: 8px;
		width: auto;
		height: auto;
		border-radius: 0;
		background: none;
		transform: none;
	}

	.seamkt-story__stop::after {
		flex: 1;
		height: 3px;
		border-radius: 3px;
		background: linear-gradient(90deg, var(--story-ink) calc(var(--seg) * 100%), var(--story-line) 0);
		content: '';
	}

	.seamkt-story__stop-num {
		position: static;
		color: #c4c4c4;
		font-size: 10px;
		font-weight: 500;
		transform: none;
	}

	.seamkt-story__stop.is-current .seamkt-story__stop-num {
		color: var(--story-ink);
		font-weight: 600;
		transform: none;
	}

	.seamkt-story__stop.is-reached,
	.seamkt-story__meter.is-full .seamkt-story__meter-end {
		background: none;
	}

	.seamkt-story__energy-value {
		justify-content: flex-end;
		min-width: 3.6ch;
		margin: 0;
		font-size: 15px;
		font-weight: 500;
		letter-spacing: -0.02em;
	}

	.seamkt-story__energy-value small {
		margin-top: 0;
		font-size: 9px;
	}

	.seamkt-story__chapters {
		gap: 120px;
	}

	.seamkt-story .seamkt-story__text {
		max-width: none;
		font-size: clamp(19px, 5.2vw, 23px);
		line-height: 1.26;
		letter-spacing: -0.022em;
	}

	.seamkt-story__chapter {
		gap: 18px;
	}

	.seamkt-story .seamkt-story__index {
		max-width: none;
		font-size: 11px;
	}

	.seamkt-story .seamkt-story__title {
		margin: 18px 0 14px;
		font-size: 26px;
	}

	/* Words light up through their colour's alpha (story.js), not their opacity: the same look
	   without a transparency group per word for Safari to paint on every scroll frame. */
	.seamkt-story.is-enhanced .seamkt-story__word {
		color: rgba(17, 17, 17, 0.14);
		opacity: 1;
		transition: color 180ms linear;
	}

	/* Tags become numbered chips instead of a slash list that broke across lines. */
	.seamkt-story__tags {
		gap: 6px;
	}

	.seamkt-story .seamkt-story__tags li,
	.seamkt-story .seamkt-story__tags li:last-child {
		align-items: center;
		gap: 0;
		padding: 6px 11px 6px 9px;
		border: 1px solid var(--story-line);
		border-radius: 999px;
		color: #4a4a4a;
		font-size: 12px;
		line-height: 1.2;
		white-space: nowrap;
	}

	.seamkt-story .seamkt-story__tags li::before,
	.seamkt-story .seamkt-story__tags li + li::before {
		margin: 0 6px 0 0;
		color: #bdbdbd;
		font-size: 9px;
		font-variant-numeric: tabular-nums;
		letter-spacing: 0.06em;
		content: counter(story-tag, decimal-leading-zero);
	}

	/* The caption waits faint and a little low above its paragraph, then settles in when that paragraph is read. */
	.seamkt-story.is-enhanced .seamkt-story__chapter:not(.is-current) :is(.seamkt-story__index, .seamkt-story__title, .seamkt-story__tags li, .seamkt-story__cta) {
		opacity: 0.25;
		transform: translate3d(0, 8px, 0);
	}

	.seamkt-story__cta {
		justify-content: space-between;
		width: 100%;
		margin-top: 20px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.seamkt-story__meter-head::after {
		animation: none;
	}

	.seamkt-story.is-enhanced .seamkt-story__word,
	.seamkt-story__stop-num {
		transition: none;
	}

	.seamkt-story.is-enhanced .seamkt-story__meta :is(.seamkt-story__index, .seamkt-story__title, .seamkt-story__tags li, .seamkt-story__cta) {
		filter: none !important;
		transform: none !important;
		transition: opacity 200ms linear !important;
	}
}