:root {
	--paper: #f4f0e7;
	--paper-deep: #e9e1d3;
	--ink: #1c2420;
	--ink-soft: #4c554f;
	--moss: #293e35;
	--moss-light: #d7dfd5;
	--red: #c6462c;
	--yellow: #e5bb51;
	--white: #fffdf8;
	--line: rgba(28, 36, 32, 0.18);
	--sans: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, sans-serif;
	--serif: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
}

* {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	color: var(--ink);
	background:
		linear-gradient(rgba(28, 36, 32, 0.025) 1px, transparent 1px),
		linear-gradient(90deg, rgba(28, 36, 32, 0.025) 1px, transparent 1px),
		var(--paper);
	background-size: 32px 32px;
	font-family: var(--sans);
	font-size: 16px;
	line-height: 1.8;
	-webkit-font-smoothing: antialiased;
}

a {
	color: inherit;
}

.skip-link {
	position: fixed;
	z-index: 100;
	top: 8px;
	left: 8px;
	padding: 8px 14px;
	background: var(--ink);
	color: white;
	transform: translateY(-160%);
}

.skip-link:focus {
	transform: translateY(0);
}

.site-header {
	width: min(1240px, calc(100% - 48px));
	height: 92px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	border-bottom: 1px solid var(--line);
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 13px;
	text-decoration: none;
	font-size: 19px;
	font-weight: 800;
	letter-spacing: 0.18em;
}

.brand-mark {
	position: relative;
	display: inline-grid;
	grid-template-columns: 12px 12px;
	align-items: center;
	width: 28px;
	height: 22px;
}

.brand-mark i {
	height: 12px;
	background: var(--red);
}

.brand-mark i:first-child {
	border-radius: 1px 0 0 1px;
	transform: translateX(3px);
}

.brand-mark i:last-child {
	border-radius: 0 1px 1px 0;
	transform: translateX(-3px);
	background: var(--moss);
}

.header-nav {
	display: flex;
	align-items: center;
	gap: 30px;
	font-size: 13px;
	font-weight: 700;
}

.header-nav a {
	text-decoration: none;
}

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

.language-link {
	display: grid;
	place-items: center;
	width: 42px;
	height: 42px;
	border: 1px solid var(--ink);
	border-radius: 50%;
	letter-spacing: 0.08em;
}

.section-shell {
	width: min(1160px, calc(100% - 48px));
	margin: 0 auto;
}

.hero {
	min-height: 690px;
	display: grid;
	grid-template-columns: minmax(0, 1.03fr) minmax(380px, 0.97fr);
	gap: 60px;
	align-items: center;
	padding-top: 64px;
	padding-bottom: 96px;
}

.eyebrow {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 0 0 20px;
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.18em;
	text-transform: uppercase;
}

.eyebrow span {
	display: inline-block;
	width: 28px;
	height: 3px;
	background: var(--red);
}

.hero h1 {
	margin: 0;
	font-family: var(--serif);
	font-size: clamp(48px, 6vw, 82px);
	font-weight: 600;
	line-height: 1.24;
	letter-spacing: -0.035em;
}

.hero h1 em {
	color: var(--red);
	font-style: normal;
}

.hero h1.hero-title-en {
	font-size: clamp(45px, 5.3vw, 72px);
	line-height: 1.15;
}

.hero-lede {
	max-width: 650px;
	margin: 34px 0 0;
	color: var(--ink-soft);
	font-size: 17px;
	line-height: 2;
}

.hero-actions {
	display: flex;
	align-items: center;
	gap: 28px;
	margin-top: 38px;
}

.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 56px;
	padding: 12px 24px;
	border: 1px solid transparent;
	text-decoration: none;
	font-size: 14px;
	font-weight: 800;
	line-height: 1.4;
	transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
	transform: translateY(-2px);
}

.button:focus-visible,
a:focus-visible,
summary:focus-visible {
	outline: 3px solid var(--yellow);
	outline-offset: 4px;
}

.button-primary {
	background: var(--red);
	color: white;
	box-shadow: 7px 7px 0 var(--ink);
}

.button-primary:hover {
	box-shadow: 4px 4px 0 var(--ink);
}

.text-link {
	text-underline-offset: 5px;
	font-size: 13px;
	font-weight: 800;
}

.microcopy {
	margin: 22px 0 0;
	color: var(--ink-soft);
	font-size: 11px;
}

.hero-object {
	position: relative;
	min-height: 480px;
	display: grid;
	place-items: center;
	background: var(--moss);
	overflow: hidden;
}

.hero-object::before,
.hero-object::after {
	content: "";
	position: absolute;
	border: 1px solid rgba(255, 255, 255, 0.12);
	border-radius: 50%;
}

.hero-object::before {
	width: 420px;
	height: 420px;
}

.hero-object::after {
	width: 300px;
	height: 300px;
}

.hero-object > p {
	position: absolute;
	bottom: 27px;
	margin: 0;
	color: rgba(255, 255, 255, 0.64);
	font-family: var(--serif);
	font-size: 12px;
	letter-spacing: 0.12em;
}

.joinery {
	position: relative;
	z-index: 1;
	width: 88%;
	display: grid;
	grid-template-columns: 1fr 84px 1fr;
	align-items: center;
	color: var(--white);
}

.joinery-piece {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	align-items: center;
	height: 112px;
	border: 1px solid rgba(255, 255, 255, 0.32);
	background: rgba(255, 255, 255, 0.05);
}

.joinery-piece span {
	display: grid;
	place-items: center;
	height: 100%;
	border-right: 1px solid rgba(255, 255, 255, 0.16);
	font-size: 12px;
	letter-spacing: 0.12em;
}

.joinery-piece span:last-child {
	border: 0;
}

.piece-left {
	clip-path: polygon(0 0, 82% 0, 82% 28%, 100% 28%, 100% 72%, 82% 72%, 82% 100%, 0 100%);
	padding-right: 13%;
}

.piece-right {
	clip-path: polygon(18% 0, 100% 0, 100% 100%, 18% 100%, 18% 72%, 0 72%, 0 28%, 18% 28%);
	padding-left: 13%;
}

.joinery-core {
	z-index: 2;
	height: 49px;
	margin: 0 -3px;
	display: grid;
	place-items: center;
	background: var(--red);
	color: white;
	font-size: 11px;
	letter-spacing: 0.08em;
	transform: rotate(-2deg);
}

.joinery-label {
	position: absolute;
	top: -48px;
	color: rgba(255, 255, 255, 0.68);
	font-size: 11px;
	letter-spacing: 0.1em;
}

.label-company {
	left: 0;
}

.label-candidate {
	right: 0;
}

.proof-strip {
	width: min(1240px, calc(100% - 48px));
	margin: 0 auto;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	border: 1px solid var(--ink);
	background: var(--white);
}

.proof-strip div {
	min-height: 116px;
	display: flex;
	align-items: baseline;
	justify-content: center;
	gap: 10px;
	padding: 28px 16px;
	border-right: 1px solid var(--line);
}

.proof-strip div:last-child {
	border: 0;
}

.proof-strip strong {
	color: var(--red);
	font-family: var(--serif);
	font-size: 32px;
	font-weight: 600;
}

.proof-strip span {
	color: var(--ink-soft);
	font-size: 11px;
	font-weight: 700;
}

.problem,
.sample,
.pilot,
.faq {
	padding-top: 140px;
	padding-bottom: 140px;
}

.section-heading {
	max-width: 760px;
}

.section-heading h2,
.pilot h2,
.about h2,
.closing h2 {
	margin: 0;
	font-family: var(--serif);
	font-size: clamp(34px, 4.3vw, 56px);
	font-weight: 600;
	line-height: 1.42;
	letter-spacing: -0.025em;
}

.section-heading > p:last-child:not(.eyebrow) {
	margin: 26px 0 0;
	color: var(--ink-soft);
}

.problem-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-top: 74px;
}

.problem-grid article {
	min-height: 280px;
	padding: 34px;
	border-top: 3px solid var(--ink);
	background: rgba(255, 253, 248, 0.7);
}

.card-index {
	margin: 0 0 42px;
	color: var(--red);
	font-family: var(--serif);
	font-size: 13px;
}

.problem-grid h3 {
	margin: 0 0 16px;
	font-family: var(--serif);
	font-size: 23px;
}

.problem-grid article > p:last-child {
	margin: 0;
	color: var(--ink-soft);
	font-size: 14px;
}

.principle {
	margin: 26px 0 0;
	padding: 26px 32px;
	border-left: 4px solid var(--red);
	background: var(--paper-deep);
	font-family: var(--serif);
}

.principle span {
	display: block;
	margin-bottom: 5px;
	color: var(--red);
	font-family: var(--sans);
	font-size: 10px;
	font-weight: 800;
	letter-spacing: 0.14em;
}

.method {
	background: var(--moss);
	color: var(--white);
}

.method-inner {
	padding-top: 140px;
	padding-bottom: 140px;
}

.section-heading-light {
	max-width: 900px;
}

.steps {
	margin: 88px 0 0;
	padding: 0;
	list-style: none;
	border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.steps li {
	display: grid;
	grid-template-columns: 86px 1fr;
	gap: 32px;
	padding: 38px 0;
	border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.steps li > div:last-child {
	display: grid;
	grid-template-columns: minmax(170px, 0.7fr) minmax(210px, 1fr) minmax(260px, 1.65fr);
	gap: 34px;
	align-items: baseline;
}

.step-number {
	display: grid;
	place-items: center;
	width: 52px;
	height: 52px;
	border: 1px solid rgba(255, 255, 255, 0.45);
	border-radius: 50%;
	color: var(--yellow);
	font-family: var(--serif);
}

.step-label {
	margin: 0;
	color: var(--yellow);
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.08em;
}

.steps h3 {
	margin: 0;
	font-family: var(--serif);
	font-size: 22px;
	font-weight: 500;
}

.steps li p:last-child {
	margin: 0;
	color: rgba(255, 255, 255, 0.65);
	font-size: 14px;
}

.diagnostic-card {
	margin-top: 74px;
	border: 1px solid var(--ink);
	background: var(--white);
	box-shadow: 14px 14px 0 var(--paper-deep);
}

.diagnostic-top {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 30px;
	padding: 42px;
	border-bottom: 1px solid var(--line);
}

.sample-kicker {
	margin: 0 0 12px;
	color: var(--red);
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.08em;
}

.diagnostic-top h3 {
	margin: 0;
	font-family: var(--serif);
	font-size: 34px;
	font-weight: 600;
	line-height: 1.45;
}

.status-chip {
	flex: 0 0 auto;
	padding: 7px 12px;
	border: 1px solid var(--red);
	color: var(--red);
	font-size: 10px;
	font-weight: 800;
}

.diagnostic-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr) 1.3fr;
}

.diagnostic-grid > div {
	padding: 38px;
	border-right: 1px solid var(--line);
}

.diagnostic-grid > div:last-child {
	border: 0;
}

.diagnostic-label {
	margin: 0 0 24px;
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.1em;
}

.diagnostic-grid ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

.diagnostic-grid li {
	position: relative;
	margin: 12px 0;
	padding-left: 18px;
	color: var(--ink-soft);
	font-size: 13px;
}

.diagnostic-grid li::before {
	content: "";
	position: absolute;
	top: 12px;
	left: 0;
	width: 7px;
	height: 2px;
	background: var(--red);
}

.experiment {
	background: var(--moss-light);
}

.experiment > p:nth-child(2) {
	margin: 0;
	font-family: var(--serif);
	font-size: 16px;
	line-height: 1.85;
}

.measure {
	margin-top: 28px;
	padding-top: 19px;
	border-top: 1px solid rgba(28, 36, 32, 0.25);
	font-size: 11px;
}

.measure span {
	margin-right: 8px;
	color: var(--red);
	font-weight: 800;
}

.pilot {
	padding-top: 20px;
}

.pilot-panel {
	display: grid;
	grid-template-columns: 1.2fr 0.8fr;
	gap: 60px;
	align-items: center;
	padding: 74px;
	background: var(--red);
	color: white;
}

.pilot-intro > p:last-child {
	max-width: 570px;
	margin: 28px 0 0;
	color: rgba(255, 255, 255, 0.76);
}

.pilot .eyebrow span {
	background: var(--yellow);
}

.price-card {
	padding: 38px;
	background: var(--white);
	color: var(--ink);
	box-shadow: 10px 10px 0 var(--ink);
}

.price-card > p:first-child {
	margin: 0;
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.1em;
}

.price {
	margin: 8px 0 0;
	font-family: var(--serif);
	font-size: 51px;
	font-weight: 600;
	line-height: 1.2;
}

.price > span {
	font-size: 22px;
}

.price small {
	margin-left: 6px;
	font-family: var(--sans);
	font-size: 10px;
}

.price-trigger {
	margin: 8px 0 26px;
	color: var(--red);
	font-size: 11px;
	font-weight: 800;
}

.price-card ul {
	margin: 0 0 28px;
	padding: 22px 0;
	list-style: none;
	border-top: 1px solid var(--line);
	border-bottom: 1px solid var(--line);
}

.price-card li {
	margin: 7px 0;
	font-size: 13px;
}

.price-card li::before {
	content: "—";
	margin-right: 9px;
	color: var(--red);
}

.button-dark {
	width: 100%;
	background: var(--ink);
	color: white;
}

.price-note {
	margin: 18px 0 0;
	color: var(--ink-soft);
	font-size: 9px;
	line-height: 1.7;
}

.boundaries {
	display: grid;
	grid-template-columns: 1fr 1fr;
	border: 1px solid var(--ink);
	border-top: 0;
}

.boundaries > div {
	padding: 34px 38px;
}

.boundaries > div + div {
	border-left: 1px solid var(--ink);
}

.boundaries h3 {
	margin: 0 0 8px;
	font-family: var(--serif);
	font-size: 17px;
}

.boundaries p {
	margin: 0;
	color: var(--ink-soft);
	font-size: 12px;
}

.about {
	background: var(--paper-deep);
}

.about-inner {
	display: grid;
	grid-template-columns: 280px 1fr;
	gap: 80px;
	align-items: start;
	padding-top: 130px;
	padding-bottom: 130px;
}

.founder-monogram {
	display: grid;
	place-items: center;
	aspect-ratio: 1;
	background: var(--moss);
	color: var(--paper);
	font-family: var(--serif);
	font-size: 68px;
	letter-spacing: -0.06em;
}

.founder-role {
	margin: 10px 0 0;
	color: var(--red);
	font-size: 12px;
	font-weight: 800;
}

.founder-copy {
	max-width: 720px;
	margin: 28px 0 0;
	font-family: var(--serif);
	font-size: 17px;
	line-height: 2;
}

.founder-notes {
	margin-top: 30px;
	padding-top: 24px;
	border-top: 1px solid var(--line);
}

.founder-notes p {
	margin: 7px 0;
	color: var(--ink-soft);
	font-size: 12px;
}

.founder-notes span {
	display: inline-block;
	min-width: 72px;
	color: var(--ink);
	font-weight: 800;
}

.faq-list {
	margin-top: 60px;
	border-top: 1px solid var(--ink);
}

.faq-list details {
	border-bottom: 1px solid var(--line);
}

.faq-list summary {
	position: relative;
	padding: 28px 52px 28px 0;
	cursor: pointer;
	list-style: none;
	font-family: var(--serif);
	font-size: 17px;
	font-weight: 600;
}

.faq-list summary::-webkit-details-marker {
	display: none;
}

.faq-list summary::after {
	content: "+";
	position: absolute;
	right: 14px;
	top: 23px;
	color: var(--red);
	font-family: var(--sans);
	font-size: 26px;
	font-weight: 300;
}

.faq-list details[open] summary::after {
	content: "−";
}

.faq-list details p {
	max-width: 780px;
	margin: -4px 0 28px;
	color: var(--ink-soft);
	font-size: 14px;
}

.closing {
	background: var(--moss);
	color: white;
}

.closing-inner {
	min-height: 380px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 60px;
}

.closing-inner > div:last-child {
	flex: 0 0 280px;
	text-align: center;
}

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

.closing-inner > div:last-child p {
	margin: 18px 0 0;
	color: rgba(255, 255, 255, 0.58);
	font-size: 11px;
}

.site-footer {
	width: min(1240px, calc(100% - 48px));
	margin: 0 auto;
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 40px;
	align-items: end;
	padding: 58px 0 35px;
}

.brand-footer {
	font-size: 15px;
}

.site-footer > div:first-child > p {
	margin: 10px 0 0;
	color: var(--ink-soft);
	font-family: var(--serif);
	font-size: 12px;
}

.footer-links {
	display: flex;
	gap: 24px;
	font-size: 11px;
	font-weight: 700;
}

.copyright {
	grid-column: 1 / -1;
	margin: 20px 0 0;
	padding-top: 20px;
	border-top: 1px solid var(--line);
	color: var(--ink-soft);
	font-size: 9px;
	letter-spacing: 0.08em;
}

.legal-page {
	min-height: calc(100vh - 180px);
	padding-top: 80px;
	padding-bottom: 130px;
}

.legal-page h1 {
	margin: 0 0 50px;
	font-family: var(--serif);
	font-size: clamp(38px, 5vw, 64px);
	font-weight: 600;
}

.legal-content {
	max-width: 820px;
}

.legal-content section {
	padding: 30px 0;
	border-top: 1px solid var(--line);
}

.legal-content h2 {
	margin: 0 0 12px;
	font-family: var(--serif);
	font-size: 20px;
}

.legal-content p,
.legal-content li {
	color: var(--ink-soft);
	font-size: 13px;
}

.legal-content a {
	text-underline-offset: 4px;
}

.legal-note {
	margin-top: 42px;
	padding: 22px;
	background: var(--paper-deep);
	font-size: 11px;
}

@media (max-width: 940px) {
	.hero {
		grid-template-columns: 1fr;
		padding-top: 80px;
	}

	.hero-object {
		min-height: 420px;
	}

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

	.problem-grid article {
		min-height: auto;
	}

	.steps li > div:last-child {
		grid-template-columns: 1fr 1fr;
	}

	.steps li p:last-child {
		grid-column: 1 / -1;
	}

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

	.diagnostic-grid .experiment {
		grid-column: 1 / -1;
		border-top: 1px solid var(--line);
	}

	.pilot-panel {
		grid-template-columns: 1fr;
	}

	.about-inner {
		grid-template-columns: 220px 1fr;
		gap: 45px;
	}
}

@media (max-width: 680px) {
	body {
		background-size: 24px 24px;
	}

	.site-header,
	.section-shell,
	.proof-strip,
	.site-footer {
		width: min(100% - 30px, 1160px);
	}

	.site-header {
		height: auto;
		min-height: 80px;
		align-items: flex-start;
		padding: 22px 0 17px;
	}

	.header-nav {
		flex-wrap: wrap;
		justify-content: flex-end;
		gap: 10px 16px;
		max-width: 190px;
	}

	.header-nav a:not(.language-link) {
		font-size: 10px;
	}

	.language-link {
		width: 34px;
		height: 34px;
	}

	.brand {
		font-size: 15px;
	}

	.hero {
		min-height: auto;
		gap: 54px;
		padding-top: 65px;
		padding-bottom: 70px;
	}

	.hero h1 {
		font-size: 45px;
	}

	.hero h1.hero-title-en {
		font-size: 42px;
	}

	.hero-lede {
		font-size: 15px;
		line-height: 1.9;
	}

	.hero-actions {
		align-items: stretch;
		flex-direction: column;
		gap: 23px;
	}

	.button {
		width: 100%;
	}

	.hero-object {
		min-height: 350px;
		margin: 0 -15px;
	}

	.joinery {
		width: 92%;
		grid-template-columns: 1fr 62px 1fr;
	}

	.joinery-piece {
		height: 92px;
	}

	.joinery-piece span {
		font-size: 9px;
		writing-mode: vertical-rl;
	}

	.joinery-core {
		font-size: 9px;
	}

	.hero-object > p {
		font-size: 9px;
	}

	.proof-strip {
		grid-template-columns: 1fr 1fr;
	}

	.proof-strip div {
		min-height: 88px;
		padding: 20px 8px;
	}

	.proof-strip div:nth-child(2) {
		border-right: 0;
	}

	.proof-strip div:nth-child(-n + 2) {
		border-bottom: 1px solid var(--line);
	}

	.proof-strip strong {
		font-size: 25px;
	}

	.problem,
	.sample,
	.pilot,
	.faq,
	.method-inner {
		padding-top: 90px;
		padding-bottom: 90px;
	}

	.section-heading h2,
	.pilot h2,
	.about h2,
	.closing h2 {
		font-size: 35px;
	}

	.problem-grid {
		margin-top: 45px;
	}

	.principle {
		padding: 22px;
	}

	.steps {
		margin-top: 55px;
	}

	.steps li {
		grid-template-columns: 46px 1fr;
		gap: 18px;
		padding: 28px 0;
	}

	.step-number {
		width: 38px;
		height: 38px;
	}

	.steps li > div:last-child {
		grid-template-columns: 1fr;
		gap: 8px;
	}

	.steps li p:last-child {
		grid-column: auto;
		margin-top: 12px;
	}

	.diagnostic-card {
		margin-top: 45px;
		box-shadow: 7px 7px 0 var(--paper-deep);
	}

	.diagnostic-top {
		flex-direction: column;
		padding: 27px;
	}

	.diagnostic-top h3 {
		font-size: 26px;
	}

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

	.diagnostic-grid > div {
		padding: 27px;
		border-right: 0;
		border-bottom: 1px solid var(--line);
	}

	.diagnostic-grid .experiment {
		grid-column: auto;
		border-top: 0;
	}

	.pilot {
		padding-top: 0;
	}

	.pilot-panel {
		gap: 40px;
		padding: 42px 22px;
	}

	.price-card {
		padding: 27px;
		box-shadow: 6px 6px 0 var(--ink);
	}

	.price {
		font-size: 43px;
	}

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

	.boundaries > div + div {
		border-top: 1px solid var(--ink);
		border-left: 0;
	}

	.about-inner {
		grid-template-columns: 1fr;
		gap: 38px;
		padding-top: 90px;
		padding-bottom: 90px;
	}

	.founder-monogram {
		width: 160px;
	}

	.closing-inner {
		min-height: 430px;
		flex-direction: column;
		align-items: stretch;
		justify-content: center;
	}

	.closing-inner > div:last-child {
		flex: 0 0 auto;
	}

	.site-footer {
		grid-template-columns: 1fr;
	}

	.footer-links {
		flex-wrap: wrap;
	}

	.copyright {
		grid-column: auto;
	}
}

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

	.button {
		transition: none;
	}
}