@font-face {
	font-display: swap;
	font-family: "Bangers";
	font-style: normal;
	font-weight: 400;
	src: url("assets/Bangers-Regular.ttf") format("truetype");
}

:root {
	--paper: #f4f0e8;
	--paper-bright: #fffaf0;
	--ink: #17130f;
	--muted: #655f55;
	--red: #c8372d;
	--red-dark: #8f211c;
	--yellow: #f4d553;
	--blue: #23758f;
	--green: #3b7a58;
	--shadow: 0.55rem 0.55rem 0 var(--ink);
	color-scheme: light;
	font-family:
		"Helvetica Neue",
		Arial,
		"Hiragino Kaku Gothic ProN",
		"Hiragino Sans",
		Meiryo,
		sans-serif;
}

* {
	box-sizing: border-box;
}

html {
	background: var(--paper);
	scroll-behavior: smooth;
}

body {
	margin: 0;
	overflow-x: hidden;
	background:
		linear-gradient(rgba(23, 19, 15, 0.035) 1px, transparent 1px),
		linear-gradient(90deg, rgba(23, 19, 15, 0.025) 1px, transparent 1px),
		var(--paper);
	background-size: 22px 22px;
	color: var(--ink);
}

body::before {
	position: fixed;
	inset: 0;
	z-index: -2;
	background:
		radial-gradient(circle at 14% 18%, rgba(255, 255, 255, 0.72), transparent 17rem),
		radial-gradient(circle at 84% 9%, rgba(244, 213, 83, 0.42), transparent 14rem),
		linear-gradient(180deg, #fff8ec 0%, #eee4d7 100%);
	content: "";
}

body::after {
	position: fixed;
	inset: 0;
	z-index: -1;
	opacity: 0.18;
	background-image: radial-gradient(var(--ink) 1.2px, transparent 1.4px);
	background-size: 12px 12px;
	content: "";
	pointer-events: none;
}

a {
	color: inherit;
	text-decoration: none;
}

img {
	display: block;
	max-width: 100%;
}

.site-header {
	position: fixed;
	top: 0;
	left: 0;
	z-index: 20;
	display: flex;
	width: 100%;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.9rem 1rem;
	background: rgba(244, 240, 232, 0.86);
	border-bottom: 3px solid var(--ink);
	backdrop-filter: blur(10px);
}

.brand,
.top-nav,
.hero-actions,
.tag-row,
.beat-row,
.site-footer,
.final-cta {
	display: flex;
	align-items: center;
}

.brand {
	gap: 0.65rem;
	min-width: 0;
	font-family: "Bangers", Impact, sans-serif;
	font-size: 1.45rem;
	line-height: 1;
	text-transform: uppercase;
	transform: rotate(-1deg);
}

.brand img {
	width: 2.4rem;
	height: 2.4rem;
	border: 3px solid var(--ink);
	border-radius: 8px;
	box-shadow: 0.22rem 0.22rem 0 var(--ink);
}

.top-nav {
	display: none;
	gap: 0.8rem;
	font-family: "Bangers", Impact, sans-serif;
	font-size: 1.05rem;
	line-height: 1;
}

.top-nav a {
	border-bottom: 3px solid transparent;
}

.top-nav a:hover,
.top-nav a:focus-visible {
	border-color: var(--red);
}

.hero {
	position: relative;
	display: grid;
	min-height: 86svh;
	place-items: center;
	overflow: hidden;
	padding: 7.2rem 1rem 4.5rem;
	border-bottom: 4px solid var(--ink);
	isolation: isolate;
	text-align: center;
}

.hero-backdrop {
	position: absolute;
	inset: 4.9rem 0 0;
	z-index: -2;
	background:
		linear-gradient(rgba(244, 240, 232, 0.34), rgba(244, 240, 232, 0.78)),
		url("assets/og-image.png") center / cover no-repeat;
	filter: saturate(1.08) contrast(1.03);
}

.hero::after {
	position: absolute;
	inset: 4.9rem 0 0;
	z-index: -1;
	background:
		radial-gradient(circle at center, rgba(255, 250, 240, 0.86), rgba(255, 250, 240, 0.32) 34%, rgba(244, 240, 232, 0.84) 75%),
		repeating-linear-gradient(102deg, rgba(23, 19, 15, 0.12) 0 2px, transparent 2px 28px);
	content: "";
	mix-blend-mode: normal;
}

.hero-content {
	position: relative;
	z-index: 2;
	width: min(100%, 58rem);
}

.eyebrow,
.store-kicker,
.feature-mark {
	font-family:
		"Courier New",
		"JetBrains Mono",
		monospace;
	font-weight: 800;
	text-transform: uppercase;
}

.eyebrow {
	margin: 0 0 0.8rem;
	color: var(--red-dark);
	font-size: 0.75rem;
	letter-spacing: 0;
}

h1,
h2,
h3,
.store-label,
.motion-strip,
.app-topline,
.input-panel span,
.tag-row,
.sfx,
.romaji,
.impact-card,
.manga-panel em,
.site-footer span {
	font-family: "Bangers", Impact, sans-serif;
	font-weight: 400;
	letter-spacing: 0;
	text-transform: uppercase;
}

h1 {
	margin: 0;
	color: var(--red);
	font-size: 5.3rem;
	line-height: 0.85;
	text-shadow:
		0.07em 0.07em 0 var(--yellow),
		0.11em 0.11em 0 var(--ink);
	transform: rotate(-2deg);
}

.hero-copy {
	margin: 1.3rem auto 0;
	max-width: 42rem;
	color: var(--ink);
	font-size: 1.12rem;
	font-weight: 800;
	line-height: 1.5;
	text-shadow: 0 1px 0 rgba(255, 250, 240, 0.82);
}

.hero-actions {
	justify-content: center;
	flex-wrap: wrap;
	gap: 0.85rem;
	margin-top: 1.7rem;
}

.store-button,
.ghost-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 3px solid var(--ink);
	border-radius: 8px;
	box-shadow: var(--shadow);
	transition:
		transform 140ms ease,
		box-shadow 140ms ease;
}

.store-button {
	min-width: 13.4rem;
	min-height: 4.1rem;
	flex-direction: column;
	background: var(--ink);
	color: var(--paper-bright);
	/* Comic-yellow shadow so the dark button doesn't read as black-on-black. */
	box-shadow: 0.55rem 0.55rem 0 var(--yellow);
	padding: 0.55rem 1.1rem 0.5rem;
	text-align: left;
}

.store-kicker {
	display: block;
	font-size: 0.68rem;
	line-height: 1.1;
}

.store-label {
	display: block;
	margin-top: 0.08rem;
	font-size: 2.1rem;
	line-height: 0.9;
}

.ghost-button {
	min-height: 4.1rem;
	background: var(--yellow);
	padding: 0.9rem 1.1rem;
	font-family: "Bangers", Impact, sans-serif;
	font-size: 1.35rem;
	line-height: 0.9;
	text-transform: uppercase;
}

.store-button:hover,
.store-button:focus-visible,
.ghost-button:hover,
.ghost-button:focus-visible {
	box-shadow: 0.25rem 0.25rem 0 var(--ink);
	transform: translate(0.25rem, 0.25rem);
}

.store-button:hover,
.store-button:focus-visible {
	box-shadow: 0.25rem 0.25rem 0 var(--yellow);
}

.burst {
	position: absolute;
	z-index: 3;
	display: grid;
	place-items: center;
	width: 6.6rem;
	aspect-ratio: 1;
	background: var(--yellow);
	clip-path: polygon(
		50% 0,
		58% 28%,
		87% 13%,
		72% 42%,
		100% 50%,
		72% 58%,
		87% 87%,
		58% 72%,
		50% 100%,
		42% 72%,
		13% 87%,
		28% 58%,
		0 50%,
		28% 42%,
		13% 13%,
		42% 28%
	);
	color: var(--red);
	font-family: "Bangers", Impact, sans-serif;
	font-size: 1.35rem;
	line-height: 0.9;
	text-shadow: 2px 2px 0 var(--ink);
	text-transform: uppercase;
	filter: drop-shadow(3px 3px 0 var(--ink));
}

.burst-one {
	right: -1.1rem;
	bottom: 5.4rem;
	transform: rotate(10deg);
}

.burst-two {
	top: 7.1rem;
	left: -1.7rem;
	background: var(--red);
	color: var(--paper-bright);
	transform: rotate(-16deg);
}

.speed-lines {
	position: absolute;
	z-index: 1;
	width: 12rem;
	height: 4rem;
	background: repeating-linear-gradient(
		to bottom,
		var(--ink) 0,
		var(--ink) 3px,
		transparent 3px,
		transparent 13px
	);
	opacity: 0.62;
	pointer-events: none;
}

.speed-lines-left {
	left: -4rem;
	bottom: 9rem;
	transform: rotate(-15deg);
}

.speed-lines-right {
	top: 9.3rem;
	right: -4rem;
	transform: rotate(14deg);
}

.motion-strip {
	display: grid;
	grid-template-columns: 1fr;
	gap: 0.7rem;
	padding: 1rem;
	background: var(--ink);
	color: var(--paper-bright);
	font-size: 1.25rem;
	line-height: 0.95;
	text-align: center;
}

.motion-strip span {
	padding: 0.6rem;
	border: 2px solid rgba(255, 250, 240, 0.35);
}

.lesson-preview,
.beat-grid,
.panel-gallery,
.final-cta {
	width: min(100%, 72rem);
	margin: 0 auto;
	padding: 4.4rem 1rem;
}

.section-heading {
	max-width: 42rem;
	margin-bottom: 1.5rem;
}

h2 {
	margin: 0;
	font-size: 2.7rem;
	line-height: 0.95;
}

.kana-inline {
	display: block;
	margin-top: 0.15rem;
	font-family:
		"Hiragino Mincho ProN",
		"Yu Mincho",
		serif;
	font-size: 0.9em;
	line-height: 1;
	text-transform: none;
	white-space: nowrap;
}

.phone-stage {
	position: relative;
	display: grid;
	gap: 1rem;
	align-items: end;
}

.phone-shell {
	position: relative;
	width: min(100%, 24.5rem);
	margin: 0 auto;
	border: 4px solid var(--ink);
	border-radius: 2.1rem;
	background: #24201b;
	box-shadow: 0.9rem 0.9rem 0 var(--ink);
	padding: 0.9rem;
	transform: rotate(-1.5deg);
}

.phone-screen {
	overflow: hidden;
	border: 3px solid #060504;
	border-radius: 1.35rem;
	background: var(--paper);
	padding: 1rem;
}

.app-topline {
	display: flex;
	align-items: center;
	gap: 0.55rem;
	font-size: 1.35rem;
}

.mini-logo {
	display: grid;
	width: 2.3rem;
	height: 2.3rem;
	place-items: center;
	border-radius: 50%;
	background: var(--ink);
	color: var(--paper-bright);
	font-family: serif;
	font-size: 1.4rem;
	font-weight: 800;
}

.input-panel,
.result-panel,
.beat-row > div,
.features article,
.manga-panel,
.impact-card {
	border: 3px solid var(--ink);
	border-radius: 8px;
	background: var(--paper-bright);
	box-shadow: 0.4rem 0.4rem 0 var(--ink);
}

.input-panel {
	margin-top: 1rem;
	padding: 0.75rem 0.9rem;
}

.input-panel span {
	display: block;
	color: var(--red);
	font-size: 1rem;
	line-height: 1;
}

.input-panel strong {
	display: block;
	margin-top: 0.2rem;
	font-family: "Bangers", Impact, sans-serif;
	font-size: 3.2rem;
	font-weight: 400;
	line-height: 0.9;
	text-transform: uppercase;
}

.result-panel {
	position: relative;
	margin-top: 1rem;
	overflow: hidden;
	padding: 0.9rem;
}

.result-panel::after {
	position: absolute;
	right: -1rem;
	bottom: -1rem;
	width: 6rem;
	height: 6rem;
	background-image: radial-gradient(var(--ink) 1.4px, transparent 1.6px);
	background-size: 9px 9px;
	content: "";
	opacity: 0.28;
}

.tag-row {
	position: relative;
	z-index: 1;
	gap: 0.55rem;
	font-size: 0.95rem;
	line-height: 1;
}

.tag-row span {
	display: inline-flex;
	border: 3px solid var(--ink);
	padding: 0.35rem 0.5rem;
}

.tag-row span:first-child {
	background: var(--red);
	color: var(--paper-bright);
}

.tag-row span:last-child {
	background: var(--yellow);
}

.sfx {
	position: relative;
	z-index: 1;
	margin-top: 0.8rem;
	color: var(--red);
	font-size: 1.2rem;
	text-align: right;
	transform: rotate(-7deg);
}

.kana {
	position: relative;
	z-index: 1;
	margin-top: 0.2rem;
	font-family:
		"Hiragino Mincho ProN",
		"Yu Mincho",
		serif;
	font-size: 4.4rem;
	font-weight: 800;
	line-height: 1;
	text-align: center;
}

.romaji {
	position: relative;
	z-index: 1;
	margin-top: 0.3rem;
	font-size: 1.55rem;
	text-align: center;
}

.beat-row {
	gap: 0.75rem;
	margin-top: 1rem;
}

.beat-row > div {
	flex: 1;
	padding: 0.65rem;
	text-align: center;
}

.beat-row strong {
	display: block;
	font-family:
		"Hiragino Mincho ProN",
		"Yu Mincho",
		serif;
	font-size: 2rem;
	line-height: 1;
}

.beat-row span {
	display: block;
	margin-top: 0.25rem;
	font-family: "Bangers", Impact, sans-serif;
	font-size: 1rem;
	text-transform: uppercase;
}

.impact-card {
	max-width: 22rem;
	margin: 0 auto;
	padding: 1rem;
	background: var(--yellow);
	transform: rotate(1.5deg);
}

.impact-card strong {
	display: block;
	font-size: 2rem;
	font-weight: 400;
	line-height: 0.95;
}

.features,
.gallery-grid {
	display: grid;
	gap: 1rem;
}

.features article {
	position: relative;
	overflow: hidden;
	min-height: 13.5rem;
	padding: 1.1rem;
}

.features article::after {
	position: absolute;
	right: -1.2rem;
	bottom: -1.3rem;
	width: 7rem;
	height: 7rem;
	background-image: radial-gradient(currentColor 1.4px, transparent 1.6px);
	background-size: 10px 10px;
	color: var(--ink);
	content: "";
	opacity: 0.2;
}

.feature-mark {
	display: inline-flex;
	background: var(--ink);
	color: var(--paper-bright);
	padding: 0.35rem 0.5rem;
	font-size: 0.8rem;
}

h3 {
	margin: 1rem 0 0;
	font-size: 2rem;
	line-height: 0.95;
}

.features p {
	margin: 0.8rem 0 0;
	color: var(--muted);
	font-size: 1rem;
	font-weight: 750;
	line-height: 1.45;
}

.panel-gallery {
	padding-top: 1.8rem;
}

.manga-panel {
	position: relative;
	display: grid;
	min-height: 15rem;
	align-content: space-between;
	overflow: hidden;
	padding: 1rem;
}

.manga-panel::before {
	position: absolute;
	inset: 0;
	background:
		repeating-linear-gradient(116deg, rgba(23, 19, 15, 0.15) 0 2px, transparent 2px 18px),
		radial-gradient(circle at 82% 22%, rgba(255, 255, 255, 0.5), transparent 7rem);
	content: "";
}

.manga-panel > * {
	position: relative;
	z-index: 1;
}

.manga-panel span {
	font-family:
		"Hiragino Mincho ProN",
		"Yu Mincho",
		serif;
	font-size: 4rem;
	font-weight: 800;
	line-height: 1;
}

.manga-panel strong {
	font-family: "Bangers", Impact, sans-serif;
	font-size: 2.4rem;
	font-weight: 400;
	line-height: 0.95;
	text-transform: uppercase;
}

.manga-panel em {
	justify-self: end;
	background: var(--paper-bright);
	border: 3px solid var(--ink);
	border-radius: 8px;
	padding: 0.35rem 0.55rem;
	color: var(--red);
	font-size: 1.4rem;
	font-style: normal;
	line-height: 0.9;
	transform: rotate(-7deg);
}

.panel-red {
	background: var(--red);
	color: var(--paper-bright);
}

.panel-yellow {
	background: var(--yellow);
}

.panel-ink {
	background: var(--blue);
	color: var(--paper-bright);
}

.final-cta {
	width: min(calc(100% - 2rem), 72rem);
	margin-bottom: 2rem;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 1.25rem;
	border: 4px solid var(--ink);
	border-radius: 8px;
	background: var(--red);
	box-shadow: var(--shadow);
	color: var(--paper-bright);
}

.final-cta h2 {
	max-width: 34rem;
}

.final-cta .eyebrow {
	color: var(--yellow);
}

.store-button-light {
	background: var(--paper-bright);
	color: var(--ink);
}

.site-footer {
	justify-content: space-between;
	gap: 1rem;
	padding: 1.5rem 1rem 2rem;
	color: var(--muted);
	font-size: 0.9rem;
}

.site-footer span {
	color: var(--ink);
	font-size: 1.2rem;
}

.site-footer a {
	text-decoration: underline;
	text-decoration-thickness: 2px;
	text-underline-offset: 0.2em;
}

@media (min-width: 44rem) {
	.site-header {
		padding: 1rem 1.4rem;
	}

	.top-nav {
		display: flex;
	}

	.hero {
		min-height: 88svh;
		padding-right: 1.4rem;
		padding-left: 1.4rem;
	}

	h1 {
		font-size: 8rem;
	}

	.hero-copy {
		font-size: 1.28rem;
	}

	.burst {
		width: 8rem;
		font-size: 1.65rem;
	}

	.burst-one {
		right: 4rem;
		bottom: 7rem;
	}

	.burst-two {
		top: 8.2rem;
		left: 4rem;
	}

	.motion-strip {
		grid-template-columns: repeat(4, 1fr);
		font-size: 1.25rem;
	}

	.lesson-preview,
	.beat-grid,
	.panel-gallery,
	.final-cta {
		padding-right: 1.4rem;
		padding-left: 1.4rem;
	}

	h2 {
		font-size: 4rem;
	}

	.kana-inline {
		display: inline-block;
		margin-top: 0;
	}

	.phone-stage {
		grid-template-columns: minmax(21rem, 25rem) minmax(18rem, 1fr);
		gap: 2.2rem;
	}

	.impact-card {
		margin: 0;
		align-self: center;
	}

	.features,
	.gallery-grid {
		grid-template-columns: repeat(3, 1fr);
	}

	.gallery-grid {
		align-items: stretch;
	}
}

@media (min-width: 70rem) {
	.hero {
		min-height: 90svh;
	}

	h1 {
		font-size: 10rem;
	}

	.hero-copy {
		max-width: 48rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	* {
		scroll-behavior: auto;
	}

	.store-button,
	.ghost-button {
		transition: none;
	}
}