.learn-hero {
	padding-block: clamp(5rem, 10vw, 9rem);
	border-bottom: 1px solid var(--line);
}

.learn-hero-layout {
	display: grid;
	grid-template-columns: minmax(0, 0.88fr) minmax(28rem, 1.12fr);
	align-items: center;
	gap: clamp(3rem, 9vw, 9rem);
}

.learn-hero h1 {
	max-width: 11ch;
	font-size: clamp(3.5rem, 7vw, 6.7rem);
}

.learn-hero-lede {
	max-width: 40rem;
	margin: 1.6rem 0 0;
	color: #b5bac5;
	font-size: clamp(1.05rem, 1rem + 0.35vw, 1.28rem);
}

.library-count {
	margin: 1.5rem 0 0;
	color: var(--faint);
	font-family: var(--mono);
	font-size: 0.68rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.score-preview {
	border: 1px solid var(--line-strong);
	border-radius: 0.7rem;
	background: #0b0d12;
	box-shadow: 0 2rem 7rem rgb(0 0 0 / 0.42);
	overflow: hidden;
}

.score-preview-bar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	border-bottom: 1px solid var(--line);
	background: var(--panel);
	padding: 0.8rem 1rem;
	font-family: var(--mono);
	font-size: 0.65rem;
	letter-spacing: 0.08em;
}

.score-preview-bar small {
	color: var(--faint);
}

.score-preview pre {
	margin: 0;
	overflow-x: auto;
	padding: clamp(1.35rem, 3vw, 2.4rem);
	color: #d8dce5;
	font-family: var(--mono);
	font-size: clamp(0.72rem, 1.3vw, 0.9rem);
	line-height: 1.8;
}

.score-preview .directive {
	color: var(--violet);
}

.score-preview .layer {
	color: var(--mint);
}

.score-preview .note {
	color: var(--cyan);
}

.score-preview .note.hot {
	display: inline-block;
	border-left: 2px solid var(--brand);
	background: rgb(230 148 5 / 0.09);
	color: var(--brand-bright);
	padding-inline: 0.45rem;
}

.score-preview > p {
	margin: 0;
	border-top: 1px solid var(--line);
	color: var(--faint);
	padding: 0.8rem 1rem;
	font-size: 0.72rem;
}

.learn-section-heading,
.catalog-intro {
	display: grid;
	grid-template-columns: 1fr 0.75fr;
	align-items: end;
	gap: clamp(2rem, 8vw, 8rem);
}

.learn-section-heading > p,
.catalog-note {
	max-width: 36rem;
	margin: 0;
	color: var(--muted);
}

.how-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1px;
	margin: clamp(3rem, 7vw, 6rem) 0 0;
	border: 1px solid var(--line);
	background: var(--line);
	padding: 0;
	list-style: none;
}

.how-grid li {
	display: grid;
	min-height: 18rem;
	grid-template-rows: auto 1fr;
	background: var(--panel);
	padding: clamp(1.5rem, 3vw, 2.7rem);
}

.how-grid li:nth-child(2) {
	background: var(--panel-2);
}

.how-grid > li > span {
	color: var(--brand);
	font-family: var(--mono);
	font-size: 0.7rem;
}

.how-grid li > div {
	align-self: end;
}

.how-grid h3 {
	font-size: 1.2rem;
}

.how-grid p {
	margin: 0.7rem 0 0;
	color: var(--muted);
}

.setup-section {
	background:
		radial-gradient(circle at 80% 50%, rgb(230 148 5 / 0.1), transparent 26rem),
		#0a0c11;
}

.setup-layout {
	display: grid;
	grid-template-columns: 0.8fr 1.2fr;
	align-items: start;
	gap: clamp(3rem, 10vw, 9rem);
}

.setup-card {
	border: 1px solid var(--line-strong);
	border-radius: 0.7rem;
	background: var(--panel);
	overflow: hidden;
}

.setup-card summary {
	position: relative;
	padding: 1.25rem 3.2rem 1.25rem 1.4rem;
	cursor: pointer;
	font-weight: 750;
	list-style: none;
}

.setup-card summary::-webkit-details-marker {
	display: none;
}

.setup-card summary::after {
	position: absolute;
	top: 1.15rem;
	right: 1.35rem;
	color: var(--brand);
	content: '+';
	font-family: var(--mono);
	font-size: 1.35rem;
}

.setup-card[open] summary::after {
	content: '−';
}

.setup-card dl {
	margin: 0;
	border-top: 1px solid var(--line);
}

.setup-card dl div {
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 1rem;
	border-bottom: 1px solid var(--line);
	padding: 0.9rem 1.4rem;
}

.setup-card dt {
	color: var(--muted);
}

.setup-card dd {
	margin: 0;
	color: var(--text);
	font-family: var(--mono);
	font-size: 0.8rem;
	font-weight: 700;
}

.setup-card > p {
	margin: 0;
	color: var(--faint);
	padding: 1.2rem 1.4rem;
	font-size: 0.78rem;
}

.catalog-section h2 {
	max-width: 14ch;
}

.catalog-note p {
	margin: 0;
}

.catalog-note [data-result-count] {
	margin-top: 1rem;
	color: var(--brand-bright);
	font-family: var(--mono);
	font-size: 0.7rem;
	letter-spacing: 0.05em;
	text-transform: uppercase;
}

.filter-row {
	display: flex;
	flex-wrap: wrap;
	gap: 0.45rem;
	margin-top: clamp(2.5rem, 5vw, 4rem);
	padding-bottom: 1.2rem;
	border-bottom: 1px solid var(--line);
}

.filter-row button {
	min-height: 2.75rem;
	border: 1px solid var(--line-strong);
	border-radius: 0.3rem;
	background: transparent;
	color: var(--muted);
	padding: 0.65rem 0.9rem;
	cursor: pointer;
	font-size: 0.8rem;
	font-weight: 750;
}

.filter-row button span {
	margin-left: 0.35rem;
	color: var(--faint);
	font-family: var(--mono);
	font-size: 0.65rem;
}

.filter-row button:hover {
	border-color: var(--muted);
	color: var(--text);
}

.filter-row button[aria-pressed='true'] {
	border-color: var(--brand);
	background: var(--brand);
	color: #15130c;
}

.filter-row button[aria-pressed='true'] span {
	color: #55400f;
}

.catalog-tier {
	padding-top: clamp(3rem, 6vw, 5rem);
}

.tier-heading {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 1rem;
	margin-bottom: 1.35rem;
}

.catalog-tier .tier-heading h2 {
	margin: 0;
	font-size: clamp(1.9rem, 3vw, 2.7rem);
	letter-spacing: -0.045em;
}

.tier-count {
	color: var(--faint);
	font-family: var(--mono);
	font-size: 0.67rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.sheet-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 1px;
	border: 1px solid var(--line);
	background: var(--line);
}

.sheet-card {
	display: flex;
	min-width: 0;
	min-height: 28rem;
	flex-direction: column;
	background: var(--panel);
	padding: clamp(1.25rem, 2.5vw, 2rem);
}

.sheet-card:nth-child(even) {
	background: #12161e;
}

.sheet-card-top {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
}

.tier-badge,
.format-badge {
	font-family: var(--mono);
	font-size: 0.62rem;
	font-weight: 700;
	letter-spacing: 0.07em;
	text-transform: uppercase;
}

.tier-badge {
	border-left: 2px solid currentcolor;
	padding-left: 0.55rem;
}

.tier-easy {
	color: var(--mint);
}

.tier-medium {
	color: var(--cyan);
}

.tier-hard {
	color: var(--brand-bright);
}

.tier-expert {
	color: var(--pink);
}

.format-badge {
	color: var(--faint);
}

.sheet-card h3 {
	margin-top: 2rem;
	font-size: clamp(1.3rem, 2vw, 1.65rem);
	line-height: 1.15;
}

.sheet-composer {
	margin: 0.45rem 0 0;
	color: var(--muted);
	font-size: 0.84rem;
}

.sheet-kind {
	margin: 1.2rem 0 0;
	color: #c6cad2;
	font-size: 0.76rem;
	font-weight: 700;
}

.sheet-focus {
	margin: 0.6rem 0 0;
	color: var(--muted);
	font-size: 0.88rem;
}

.sheet-status {
	display: inline-flex;
	align-self: flex-start;
	margin: 1.25rem 0 0;
	border: 1px solid var(--line-strong);
	border-radius: 999px;
	color: var(--faint);
	padding: 0.28rem 0.55rem;
	font-size: 0.65rem;
}

.sheet-status.preview {
	border-color: rgb(244 63 94 / 0.5);
	color: #fda4af;
}

.sheet-card-footer {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	align-items: end;
	gap: 1rem;
	margin-top: auto;
	padding-top: 1.5rem;
}

.sheet-card-footer code {
	overflow: hidden;
	color: var(--faint);
	font-family: var(--mono);
	font-size: 0.58rem;
	line-height: 1.45;
	overflow-wrap: anywhere;
}

.download-link {
	display: inline-flex;
	min-height: 2.8rem;
	align-items: center;
	border: 1px solid var(--brand);
	border-radius: 0.3rem;
	color: var(--brand-bright);
	padding: 0.6rem 0.8rem;
	font-size: 0.75rem;
	font-weight: 800;
	text-decoration: none;
	white-space: nowrap;
}

.download-link:hover {
	background: var(--brand);
	color: #15130c;
}

.noscript-catalog {
	margin-top: 2rem;
	border: 1px solid var(--line);
	background: var(--panel);
	padding: 1.5rem;
}

.noscript-catalog ul {
	columns: 2;
}

.learn-closing {
	padding-block: clamp(5rem, 10vw, 9rem);
	border-top: 1px solid var(--line);
	background:
		radial-gradient(
			circle at 75% 50%,
			rgb(230 148 5 / 0.12),
			transparent 25rem
		),
		#0c0f15;
}

.learn-closing-inner {
	display: flex;
	align-items: end;
	justify-content: space-between;
	gap: 3rem;
}

.learn-closing h2 {
	margin: 0;
	font-size: clamp(2.8rem, 6vw, 5.5rem);
	letter-spacing: -0.065em;
	line-height: 0.95;
}

.learn-closing p:not(.eyebrow) {
	max-width: 40rem;
	margin: 1rem 0 0;
	color: var(--muted);
}

@media (max-width: 1050px) {
	.learn-hero-layout {
		grid-template-columns: 1fr;
	}

	.learn-hero-layout > div:first-child {
		max-width: 52rem;
	}

	.sheet-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 820px) {
	.learn-section-heading,
	.catalog-intro,
	.setup-layout {
		grid-template-columns: 1fr;
	}

	.how-grid {
		grid-template-columns: 1fr;
	}

	.how-grid li {
		min-height: 13rem;
	}

	.learn-closing-inner {
		align-items: flex-start;
		flex-direction: column;
	}
}

@media (max-width: 640px) {
	.learn-hero {
		padding-top: 3.5rem;
	}

	.learn-hero h1 {
		font-size: clamp(3rem, 15vw, 4.4rem);
	}

	.score-preview {
		margin-inline: -0.25rem;
	}

	.filter-row {
		display: grid;
		grid-template-columns: repeat(2, 1fr);
	}

	.filter-row button:first-child {
		grid-column: 1 / -1;
	}

	.sheet-grid {
		grid-template-columns: 1fr;
	}

	.sheet-card {
		min-height: 25rem;
	}

	.noscript-catalog ul {
		columns: 1;
	}

	.learn-closing .button {
		width: 100%;
	}
}