[data-surface="home"]{
	--home-rule: var(--ka-color-rule-hairline);
	--home-muted: var(--ka-color-ink-quiet);
	--home-forest: var(--ka-color-evidence-present-ink);
}

html{
	scroll-behavior: smooth;
}

[data-surface="home"]{
	--ka-app-background: linear-gradient(180deg, var(--ka-color-paper-base) 0%, #f5f3ed 100%);
}

.home-masthead{
	display: grid;
	grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
	gap: var(--ka-space-48);
	align-items: center;
	padding: var(--ka-entry-hero-top) 0 var(--ka-entry-hero-bottom);
	border-bottom: var(--ka-border-hairline);
}

.home-masthead-copy{
	max-width: 760px;
}

.home-kicker,
.section-label{
	margin: 0 0 var(--ka-space-12);
	color: var(--home-forest);
	font-family: var(--ka-font-mono);
	font-size: var(--ka-text-data-label);
	font-weight: 700;
	letter-spacing: var(--ka-track-micro);
	text-transform: uppercase;
}

.home-masthead h1{
	max-width: 13ch;
	margin: 0;
	color: var(--ka-color-ink-primary);
}

.home-deck{
	max-width: 60ch;
	margin: var(--ka-space-24) 0 0;
	color: var(--ka-color-ink-secondary);
	font-size: var(--ka-text-body-lead);
	line-height: var(--ka-line-body-lead);
}


.home-search{
	max-width: 640px;
	margin: var(--ka-space-32) 0 0;
}
.home-search-fallback{
	margin: var(--ka-space-12) 0 0;
	font-size: var(--ka-text-data-label);
	color: var(--home-muted);
}
/* Home only: once search is active, do not let placeholder copy look like a
   committed query. The open listbox supplies the actual blank-state guidance. */
#home-taxon-search .ka-combobox-input:focus::placeholder{
	opacity: 0;
}
.home-scope{
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: var(--ka-space-12);
	max-width: 640px;
	margin: var(--ka-space-24) 0 0;
}
.home-scope div{
	padding-top: var(--ka-space-12);
	border-top: 2px solid var(--ka-color-rule-subtle);
}
.home-scope dt{
	font-family: var(--ka-font-latin-serif);
	font-size: 1.45rem;
	font-weight: 700;
	line-height: 1;
	color: var(--ka-color-ink-primary);
}
.home-scope dd{
	margin-top: var(--ka-space-6);
	font-size: var(--ka-text-data-label);
	color: var(--home-muted);
}

.home-reference-figure{
	min-width: 0;
	margin: 0;
	border: 1px solid var(--home-rule);
	background: var(--ka-color-paper-surface);
}

.home-reference-media-link{
	position: relative;
	display: block;
	overflow: hidden;
	color: inherit;
	background: var(--ka-color-paper-sunken);
}

.home-reference-figure img{
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 4 / 3;
	object-fit: cover;
	object-position: 50% 50%;
	transition: transform var(--ka-transition-subtle, 150ms ease), filter var(--ka-transition-subtle, 150ms ease);
}

.home-reference-figure img[hidden]{
	display: none;
}

.home-reference-figure[data-bird-mode="current"] img{
	object-fit: contain;
	background: var(--ka-color-paper-sunken);
}


.home-reference-media-link:hover img,
.home-reference-media-link:focus-visible img{
	transform: scale(1.015);
	filter: brightness(0.96);
}

.home-reference-media-link:focus-visible{
	outline: 2px solid var(--ka-color-focus-ring, #163626);
	outline-offset: 3px;
}

.home-reference-media-unavailable{
	display: grid;
	place-content: center;
	gap: var(--ka-space-8);
	width: 100%;
	aspect-ratio: 4 / 3;
	padding: var(--ka-space-24);
	background:
		linear-gradient(135deg, transparent 49.5%, var(--ka-color-rule-hairline) 50%, transparent 50.5%),
		var(--ka-color-paper-sunken);
	color: var(--ka-color-ink-secondary);
	text-align: center;
}

.home-reference-media-unavailable[hidden]{
	display: none;
}

.home-reference-media-unavailable small{
	font-family: var(--ka-font-mono);
	font-size: var(--ka-text-data-label);
	letter-spacing: var(--ka-track-micro);
	text-transform: uppercase;
}

.home-reference-media-unavailable strong{
	font-family: var(--ka-font-latin-serif);
	font-size: clamp(1.25rem, 2vw, 1.65rem);
	font-style: italic;
	font-weight: 600;
}

.home-reference-figure figcaption{
	padding: var(--ka-space-16);
	border-top: 1px solid var(--home-rule);
	color: var(--home-muted);
	font-size: var(--ka-text-data-label);
	line-height: 1.5;
}

.home-reference-label{
	margin: 0 0 var(--ka-space-8);
	color: var(--home-forest);
	font-family: var(--ka-font-mono);
	font-size: var(--ka-text-data-label);
	font-weight: 700;
	letter-spacing: var(--ka-track-micro);
	text-transform: uppercase;
}

.home-reference-identity{
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 4px 9px;
	margin-bottom: 7px;
	color: var(--ka-color-ink-primary);
}

.home-reference-identity strong{
	font-family: var(--ka-font-latin-serif);
	font-size: 1rem;
	font-weight: 700;
}

.home-reference-identity span,
.home-reference-identity em{
	color: var(--home-muted);
}

.home-reference-description,
.home-reference-credit{
	margin: 0;
}

.home-reference-description{
	max-width: 58ch;
}

.home-reference-credit{
	margin-top: var(--ka-space-8);
	font-size: 0.9em;
	color: var(--ka-color-ink-quiet);
}
.home-reference-credit a{
	color: inherit;
	text-underline-offset: 0.16em;
}

.home-current-actions{
	display: flex;
	flex-wrap: wrap;
	gap: var(--ka-space-8) var(--ka-space-16);
	margin-top: var(--ka-space-12);
	padding-top: var(--ka-space-10);
	border-top: 1px solid var(--home-rule);
}

.home-current-actions[hidden]{
	display: none;
}

.home-current-actions a{
	color: var(--ka-color-link);
	font-weight: 700;
	text-underline-offset: 0.18em;
}

/* Home task router: compact orientation, not a second navigation wall. */
.surface-guide{
	padding: var(--ka-entry-followup-top) 0 var(--ka-space-40);
	border-bottom: var(--ka-border-hairline);
}

.surface-guide-intro{
	display: grid;
	grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
	gap: var(--ka-space-48);
	align-items: end;
	padding-bottom: var(--ka-space-24);
	border-bottom: 2px solid var(--home-forest);
}

.surface-guide h2{
	max-width: 18ch;
	margin: 0;
	color: var(--ka-color-ink-primary);
	font-family: var(--ka-font-latin-serif);
	font-size: clamp(1.8rem, 2.7vw, 2.7rem);
	line-height: 1.08;
	letter-spacing: -0.025em;
}

.surface-guide-deck{
	max-width: 60ch;
	margin: 0;
	color: var(--ka-color-ink-secondary);
	font-size: var(--ka-text-body-lead);
	line-height: var(--ka-line-body-lead);
}

.surface-list{
	display: grid;
	grid-template-columns: repeat(5, minmax(0, 1fr));
}

.surface-row{
	min-width: 0;
	border-right: 1px solid var(--home-rule);
}

.surface-row:last-child{
	border-right: 0;
}

.surface-row-link{
	display: grid;
	grid-template-rows: auto 1fr auto;
	min-height: 172px;
	height: 100%;
	padding: var(--ka-space-16) var(--ka-space-16);
	color: inherit;
	text-decoration: none;
	cursor: pointer;
	transition: background-color var(--ka-transition-subtle, 150ms ease);
}

.surface-row-link:hover,
.surface-row-link:focus-visible{
	background: var(--ka-color-paper-sunken);
}

.surface-row-link:focus-visible{
	outline: 2px solid var(--ka-color-focus-ring, #163626);
	outline-offset: -2px;
}

.surface-index{
	color: var(--home-forest);
	font-family: var(--ka-font-mono);
	font-size: var(--ka-text-data-label);
	font-weight: 700;
}

.surface-copy{
	display: block;
	align-self: start;
	margin-top: var(--ka-space-12);
}

.surface-copy strong{
	display: block;
	margin: 0;
	color: var(--ka-color-ink-primary);
	font-family: var(--ka-font-latin-serif);
	font-size: 1.18rem;
	line-height: 1.12;
}

.surface-copy span{
	display: block;
	margin-top: var(--ka-space-8);
	color: var(--home-muted);
	font-size: var(--ka-text-body);
	line-height: 1.45;
}

.surface-row-link:hover .surface-copy strong,
.surface-row-link:focus-visible .surface-copy strong{
	color: var(--home-forest);
	text-decoration: underline;
	text-underline-offset: 0.16em;
}

.surface-arrow{
	align-self: end;
	margin-top: var(--ka-space-16);
	color: var(--home-forest);
	font-size: 1.15rem;
	line-height: 1;
}

/* Interpretation guardrails follow task choice; they explain results rather
   than delaying the user's first action. */
.home-value-band{
	display: grid;
	grid-template-columns: minmax(240px, 0.85fr) minmax(0, 1.15fr);
	gap: var(--ka-space-48);
	padding: var(--ka-space-40) 0;
	border-bottom: var(--ka-border-hairline);
}

.home-value-band h2{
	max-width: 19ch;
	margin: 0;
	color: var(--ka-color-ink-primary);
	font-family: var(--ka-font-latin-serif);
	font-size: clamp(1.65rem, 2.4vw, 2.4rem);
	line-height: 1.08;
	letter-spacing: -0.025em;
}

.home-value-heading > p:last-child{
	max-width: 48ch;
	margin: var(--ka-space-16) 0 0;
	color: var(--ka-color-ink-secondary);
	line-height: var(--ka-line-body);
}

.home-value-copy{
	min-width: 0;
	color: var(--ka-color-ink-secondary);
}

.home-reading-rules{
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	margin: 0;
	border-top: 1px solid var(--home-rule);
	border-bottom: 1px solid var(--home-rule);
}

.home-reading-rules > div{
	min-width: 0;
	padding: var(--ka-space-12) var(--ka-space-16);
	border-left: 1px solid var(--home-rule);
}

.home-reading-rules > div:first-child{
	border-left: 0;
}

.home-reading-rules dt{
	color: var(--ka-color-ink-primary);
	font-weight: 700;
	line-height: 1.35;
}

.home-reading-rules dd{
	margin: var(--ka-space-8) 0 0;
	font-size: var(--ka-text-data-label);
	line-height: 1.5;
}

.home-reference-quicklinks{
	display: flex;
	flex-wrap: wrap;
	gap: var(--ka-space-8);
	margin-top: var(--ka-space-16);
	font-size: var(--ka-text-body);
}

.home-reference-quicklinks a,
.home-reference-nav a{
	color: var(--ka-color-link);
	text-underline-offset: 0.18em;
}

.home-footer{
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: var(--ka-space-24);
	padding: var(--ka-space-24) 0 0;
	color: var(--home-muted);
	font-size: var(--ka-text-data-label);
}

.home-reference-nav{
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--ka-space-8) var(--ka-space-16);
}

@media (max-width: 1020px) {
	.surface-list{
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.surface-row{
		border-right: 1px solid var(--home-rule);
		border-bottom: 1px solid var(--home-rule);
	}

	.surface-row:nth-child(2n){
		border-right: 0;
	}

	.surface-row:last-child{
		border-right: 1px solid var(--home-rule);
	}

	.surface-row-link{
		min-height: 132px;
	}
}

@media (max-width: 820px) {
	.home-masthead,
	.home-value-band,
	.surface-guide-intro{
		grid-template-columns: 1fr;
		gap: var(--ka-space-24);
	}

	.home-reference-figure img,
	.home-reference-media-unavailable{
		aspect-ratio: 16 / 10;
	}

	.home-value-band{
		padding: var(--ka-space-32) 0;
	}

	.home-reading-rules{
		grid-template-columns: 1fr;
	}

	.home-reading-rules > div,
	.home-reading-rules > div:first-child{
		padding: var(--ka-space-12) 0;
		border-left: 0;
		border-top: 1px solid var(--home-rule);
	}

	.home-reading-rules > div:first-child{
		border-top: 0;
	}
}

@media (max-width: 560px) {
	.surface-guide{
		padding-bottom: var(--ka-space-32);
	}

	.surface-guide-intro{
		padding-bottom: var(--ka-space-16);
	}

	.surface-guide h2{
		font-size: clamp(1.65rem, 8vw, 2.1rem);
	}

	.surface-guide-deck{
		font-size: var(--ka-text-body);
	}

	.surface-list{
		grid-template-columns: 1fr;
	}

	.surface-row,
	.surface-row:nth-child(2n),
	.surface-row:last-child{
		border-right: 0;
		border-bottom: 1px solid var(--home-rule);
	}

	.surface-row-link{
		grid-template-columns: 28px minmax(0, 1fr) auto;
		grid-template-rows: auto;
		gap: var(--ka-space-12);
		align-items: start;
		min-height: 0;
		padding: var(--ka-space-12) 0;
	}

	.surface-copy{
		margin-top: 0;
	}

	.surface-copy strong{
		font-size: 1.08rem;
	}

	.surface-copy span{
		margin-top: var(--ka-space-4);
		font-size: var(--ka-text-data-label);
	}

	.surface-arrow{
		align-self: center;
		margin-top: 0;
	}

	.home-reference-figure img,
	.home-reference-media-unavailable{
		aspect-ratio: 4 / 3;
	}

	.home-value-band h2{
		font-size: clamp(1.55rem, 7.5vw, 2rem);
	}

	.home-footer{
		flex-direction: column;
		gap: var(--ka-space-8);
	}
}