@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400..800&family=Instrument+Sans:wght@400..700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@600&text=%E6%94%B9%E5%96%84&display=swap");

:root {
	/* Palette */
	--periwinkle: #c7cbf5;
	--muted-teal: #84a98c;
	--coffee: #110b11;
	--raspberry: #950952;
	--stormy: #086375;

	--paper: #f5f4f8;
	--card: #ffffff;
	--ink: var(--coffee);
	--body: #3e3740;
	--muted: #777079;
	--rule: rgba(17, 11, 17, 0.14);

	--display: "Bricolage Grotesque", "Instrument Sans", system-ui, sans-serif;
	--sans: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
	--mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
	--kanji: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--paper); }
::selection { background: var(--periwinkle); color: var(--coffee); }

body {
	margin: 0;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	background: var(--paper);
	color: var(--ink);
	font: 17px/1.6 var(--sans);
	-webkit-font-smoothing: antialiased;
}
main { flex: 1; }

a { color: inherit; }
code { font-family: var(--mono); font-size: 0.86em; }
h1, h2, h3 { font-family: var(--display); margin: 0; font-weight: 700; letter-spacing: -0.035em; }
p { margin: 0; }
svg text { font-family: var(--sans); }

.wrap { width: 100%; max-width: 74rem; margin: 0 auto; padding: 0 2rem; }

/* ---------- the 改善 mark ---------- */

.seal {
	display: inline-grid;
	place-items: center;
	width: 2.1rem;
	height: 2.1rem;
	border-radius: 6px;
	background: var(--raspberry);
	color: #fff;
	font: 600 0.78rem/1 var(--kanji);
	writing-mode: vertical-rl;
	letter-spacing: 0.05em;
}

/* ---------- nav ---------- */

.nav { display: flex; align-items: center; justify-content: space-between; height: 5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.brand b { font: 800 1.35rem/1 var(--display); letter-spacing: -0.04em; }
.brand b span { color: var(--stormy); }
.nav nav { display: flex; align-items: center; gap: 2rem; font-size: 0.96rem; }
.nav nav a { text-decoration: none; color: var(--body); }
.nav nav a:hover, .nav nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-color: var(--raspberry); text-decoration-thickness: 2px; text-underline-offset: 6px; }

/* ---------- buttons: a pill with an arrow disc ---------- */

.go {
	display: inline-flex;
	align-items: center;
	gap: 0.85rem;
	height: 3.1rem;
	padding: 0 0.4rem 0 1.4rem;
	border-radius: 999px;
	background: var(--coffee);
	color: #fff;
	font: 600 0.98rem var(--sans);
	text-decoration: none !important;
	transition: background 0.2s;
}
.go::after {
	content: "→";
	display: grid;
	place-items: center;
	width: 2.3rem;
	height: 2.3rem;
	border-radius: 50%;
	background: var(--periwinkle);
	color: var(--coffee);
	transition: transform 0.2s;
}
.go:hover { background: var(--stormy); }
.go:hover::after { transform: translateX(3px); }
.go.light { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--coffee); }
.go.light::after { background: var(--coffee); color: #fff; }
.go.light:hover { background: var(--periwinkle); }
.go.small { height: 2.5rem; padding-left: 1.1rem; font-size: 0.9rem; }
.go.small::after { width: 1.8rem; height: 1.8rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.eyebrow { display: inline-flex; align-items: center; gap: 0.6rem; font: 600 0.8rem var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--stormy); }
.eyebrow::before { content: ""; width: 1.6rem; height: 2px; background: var(--raspberry); }

/* ---------- hero ---------- */

.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 3rem; align-items: center; padding: 3.5rem 0 5rem; }
.hero-copy { display: grid; gap: 1.6rem; align-content: center; }
.hero h1 { font-size: clamp(3rem, 7vw, 5.7rem); line-height: 0.95; letter-spacing: -0.05em; font-weight: 780; }
.hero h1 .u { background: linear-gradient(transparent 62%, var(--periwinkle) 62%, var(--periwinkle) 92%, transparent 92%); }
.hero .sub { font-size: 1.2rem; color: var(--body); max-width: 31rem; }
.hero-art { position: relative; }
.hero-art svg { width: 100%; height: auto; display: block; }
.hero-art figcaption { margin-top: 0.8rem; font-size: 0.85rem; color: var(--muted); display: flex; justify-content: space-between; }

/* ---------- section scaffolding ---------- */

.block { padding: 6rem 0; border-top: 1px solid var(--rule); }
.block-head { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: end; margin-bottom: 3.5rem; }
.block-head h2 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); line-height: 1; }
.block-head p { color: var(--body); font-size: 1.1rem; max-width: 30rem; }
.block-head .eyebrow { margin-bottom: 1.1rem; }

/* ---------- the loop ---------- */

.loop { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: center; }
.loop svg { width: 100%; max-width: 30rem; height: auto; display: block; margin: 0 auto; }
.loop ol { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.loop li { counter-increment: s; display: grid; grid-template-columns: 3rem 1fr; gap: 0.25rem 1rem; padding: 1.15rem 0; border-top: 1px solid var(--rule); }
.loop li:last-child { border-bottom: 1px solid var(--rule); }
.loop li::before { content: "0" counter(s); grid-row: span 2; font: 700 1.1rem var(--display); color: var(--raspberry); padding-top: 0.15rem; }
.loop li h3 { font-size: 1.35rem; }
.loop li p { color: var(--body); }

/* ---------- scores ---------- */

.scores { display: grid; grid-template-columns: repeat(3, 1fr); border-radius: 20px; overflow: hidden; }
.score { padding: 2.25rem 2rem 2.5rem; display: grid; gap: 0.9rem; align-content: start; min-height: 20rem; }
.score .big { font: 800 clamp(3.2rem, 6vw, 4.8rem)/0.9 var(--display); letter-spacing: -0.05em; }
.score h3 { font-size: 1.45rem; margin-top: auto; }
.score p { font-size: 0.98rem; }
.score.s1 { background: var(--stormy); color: #fff; }
.score.s1 .big { color: var(--periwinkle); }
.score.s1 p { color: rgba(255, 255, 255, 0.85); }
.score.s2 { background: var(--periwinkle); color: var(--coffee); }
.score.s2 .big { color: var(--stormy); }
.score.s2 p { color: #2c2630; }
.score.s3 { background: var(--coffee); color: #fff; }
.score.s3 .big { color: var(--muted-teal); }
.score.s3 p { color: #c9c2cb; }

/* ---------- ratchet vs one-time drop ---------- */

.versus { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.chart-card { background: var(--card); border-radius: 20px; padding: 1.75rem 1.75rem 1.5rem; box-shadow: 0 1px 0 var(--rule), 0 20px 50px -30px rgba(17, 11, 17, 0.35); }
.chart-card.us { outline: 2px solid var(--coffee); }
.chart-card h3 { font-size: 1.45rem; }
.chart-card .tagline { color: var(--body); margin: 0.35rem 0 1.25rem; }
.chart-card svg { width: 100%; height: auto; display: block; }
.ticks { margin-top: 1.25rem; display: grid; gap: 0.45rem; list-style: none; padding: 0; font-size: 0.95rem; color: var(--body); }
.ticks li::before { content: "✓"; font-weight: 700; color: var(--stormy); margin-right: 0.6rem; }
.ticks li.x::before { content: "✕"; color: var(--raspberry); }
.footnote { margin-top: 1.5rem; color: var(--muted); font-size: 0.95rem; }

/* ---------- ledger (skills) ---------- */

.ledger { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--coffee); }
.ledger li { border-bottom: 1px solid var(--rule); }
.ledger a, .ledger .row { display: grid; grid-template-columns: 3.5rem 15rem 1fr 2rem; gap: 1.5rem; align-items: baseline; padding: 1.4rem 0.25rem; text-decoration: none; transition: background 0.15s, padding 0.15s; }
.ledger a:hover { background: var(--card); padding-left: 0.9rem; padding-right: 0.9rem; }
.ledger .n { font: 700 0.95rem var(--display); color: var(--raspberry); }
.ledger .name { font: 600 1.05rem var(--mono); letter-spacing: -0.02em; }
.ledger .desc { color: var(--body); }
.ledger .arr { color: var(--stormy); font-weight: 700; text-align: right; }
.ledger .tools { display: block; margin-top: 0.5rem; font: 0.8rem var(--mono); color: var(--stormy); }
.ledger.static .row { grid-template-columns: 3.5rem 15rem 1fr; }

/* ---------- ask band ---------- */

.ask { background: var(--coffee); color: #fff; border-radius: 28px; padding: 4rem 3.5rem; display: grid; grid-template-columns: 1fr 1.3fr; gap: 3rem; align-items: center; position: relative; overflow: hidden; }
.ask h2 { font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.02; }
.ask p { color: #c9c2cb; margin-top: 1rem; }
.ask a { color: var(--periwinkle); }
.ask ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.2rem; }
.ask li { font: 600 clamp(1.15rem, 2vw, 1.5rem)/1.3 var(--display); letter-spacing: -0.02em; padding: 0.75rem 0; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
.ask li::before { content: "“"; color: var(--raspberry); margin-right: 0.15em; }
.ask li::after { content: "”"; color: var(--raspberry); margin-left: 0.05em; }
.ask .ghost-kanji { position: absolute; right: -1.5rem; bottom: -4.5rem; font: 600 14rem/1 var(--kanji); color: rgba(199, 203, 245, 0.06); pointer-events: none; writing-mode: vertical-rl; }

/* ---------- next up ---------- */

.next { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.next div { border-top: 3px solid var(--c, var(--coffee)); padding-top: 1rem; }
.next span { font: 700 0.85rem var(--display); color: var(--muted); }
.next h3 { font-size: 1.15rem; margin-top: 0.35rem; letter-spacing: -0.02em; }

/* ---------- inner pages ---------- */

.page-head { padding: 4.5rem 0 4rem; display: grid; gap: 1.4rem; max-width: 50rem; }
.page-head h1 { font-size: clamp(3rem, 6.6vw, 5.2rem); line-height: 0.95; letter-spacing: -0.05em; font-weight: 780; }
.page-head .sub { font-size: 1.2rem; color: var(--body); max-width: 36rem; }
.group { padding: 3.5rem 0 1rem; display: grid; grid-template-columns: 16rem 1fr; gap: 2.5rem; border-top: 1px solid var(--rule); }
.group h2 { font-size: 1.9rem; }
.group > div > p { color: var(--muted); margin-top: 0.5rem; font-size: 0.98rem; }

.prose-wrap { display: grid; grid-template-columns: 16rem 1fr; gap: 2.5rem; padding: 3rem 0 0; border-top: 1px solid var(--rule); }
.prose { max-width: 40rem; font-size: 1.15rem; line-height: 1.75; color: var(--body); }
.prose > p:first-of-type { font: 600 1.45rem/1.4 var(--display); letter-spacing: -0.02em; color: var(--ink); }
.prose p + p { margin-top: 1.3rem; }
.prose h2 { font-size: 1.7rem; margin: 2.4rem 0 0.8rem; color: var(--ink); }
.prose .placeholder::first-letter { all: unset; }
.prose .placeholder { color: var(--muted); }
.side-kanji { font: 600 4.5rem/1 var(--kanji); color: var(--periwinkle); writing-mode: vertical-rl; }

/* ---------- footer ---------- */

footer { margin-top: 6rem; background: var(--coffee); color: #c9c2cb; }
.foot { display: grid; grid-template-columns: auto 1fr auto; gap: 3rem; align-items: end; padding: 3.5rem 0 2.5rem; }
.foot .k { font: 600 5.5rem/0.9 var(--kanji); color: var(--periwinkle); writing-mode: vertical-rl; }
.foot .about b { display: block; font: 800 1.8rem/1 var(--display); color: #fff; letter-spacing: -0.04em; margin-bottom: 0.6rem; }
.foot .about p { max-width: 26rem; font-size: 0.95rem; }
.foot nav { display: grid; gap: 0.45rem; text-align: right; font-size: 0.95rem; }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: #fff; }
.chips { display: flex; height: 6px; }
.chips i { flex: 1; }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
	.hero, .loop, .block-head, .ask { grid-template-columns: 1fr; }
	.hero { padding-top: 2rem; }
	.scores { grid-template-columns: 1fr; }
	.score { min-height: 0; }
	.next { grid-template-columns: 1fr 1fr; }
	.ledger a, .ledger .row { grid-template-columns: 2.5rem 1fr 1.5rem; }
	.ledger.static .row { grid-template-columns: 2.5rem 1fr; }
	.ledger .desc { grid-column: 2 / -1; }
	.group, .prose-wrap { grid-template-columns: 1fr; gap: 1rem; }
	.side-kanji { display: none; }
}
@media (max-width: 680px) {
	.wrap { padding: 0 1.25rem; }
	.nav nav a:not(.go) { display: none; }
	.versus { grid-template-columns: 1fr; }
	.next { grid-template-columns: 1fr; }
	.ask { padding: 2.5rem 1.5rem; border-radius: 20px; }
	.block { padding: 4.5rem 0; }
	.foot { grid-template-columns: 1fr; gap: 1.5rem; }
	.foot .k { writing-mode: horizontal-tb; font-size: 3rem; }
	.foot nav { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
	.go, .go::after, .ledger a { transition: none; }
}

/* ---------- what kaizen means ---------- */

.kanji-pair { display: flex; align-items: center; justify-content: center; gap: 2rem; flex-wrap: wrap; padding: 1rem 0 3.5rem; }
.glyph { display: grid; justify-items: center; gap: 0.3rem; min-width: 9rem; }
.glyph .char { font: 600 clamp(5rem, 11vw, 8.5rem)/1 var(--kanji); color: var(--coffee); }
.glyph .char.sm { font-size: clamp(3.4rem, 7vw, 5.2rem); line-height: 1.45; color: var(--raspberry); }
.glyph .read { font: 700 1.3rem var(--display); letter-spacing: -0.02em; margin-top: 0.4rem; }
.glyph .gloss { color: var(--muted); font-size: 0.98rem; }
.glyph.result { background: var(--card); border-radius: 20px; padding: 1.5rem 2rem; box-shadow: 0 20px 50px -30px rgba(17, 11, 17, 0.35); }
.plus { font: 300 2.6rem var(--display); color: var(--stormy); }
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: 20px; overflow: hidden; }
.principles div { background: var(--paper); padding: 1.6rem 1.5rem; display: grid; gap: 0.5rem; align-content: start; }
.principles h3 { font-size: 1.3rem; }
.principles p { color: var(--body); font-size: 0.96rem; }
.origin { margin-top: 1.5rem; color: var(--muted); font-size: 0.95rem; max-width: 46rem; }
@media (max-width: 960px) { .principles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .principles { grid-template-columns: 1fr; } .kanji-pair { gap: 1rem; } .glyph { min-width: 6rem; } }
.nav nav a.go { color: #fff; text-decoration: none; }
.nav nav a.go:hover { color: #fff; }

/* ---------- the problem ---------- */

.problems { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 1rem; }
.problem { border-radius: 20px; padding: 2rem 1.9rem 2.2rem; display: grid; gap: 0.7rem; align-content: start; min-height: 19rem; }
.problem .stat { font: 800 clamp(2.6rem, 5vw, 4.2rem)/0.95 var(--display); letter-spacing: -0.05em; }
.problem h3 { font-size: 1.45rem; }
.problem p { font-size: 0.98rem; margin-top: auto; }
.problem.p1 { background: var(--raspberry); color: #fff; }
.problem.p1 p { color: rgba(255, 255, 255, 0.85); }
.problem.p2 { background: var(--card); box-shadow: 0 1px 0 var(--rule), 0 20px 50px -30px rgba(17, 11, 17, 0.35); }
.problem.p2 .stat { color: var(--raspberry); }
.problem.p2 p, .problem.p3 p { color: var(--body); }
.problem.p3 { background: var(--card); box-shadow: 0 1px 0 var(--rule), 0 20px 50px -30px rgba(17, 11, 17, 0.35); }
.problem.p3 .stat { color: var(--raspberry); }

/* ---------- what we're building ---------- */

.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: 20px; overflow: hidden; }
.pillars div { background: var(--card); padding: 1.8rem 1.6rem 2rem; display: grid; gap: 0.6rem; align-content: start; }
.pillars .pi { width: 2.6rem; height: 2.6rem; border-radius: 50%; display: grid; place-items: center; font-size: 1.45rem; font-weight: 700; background: var(--periwinkle); color: var(--coffee); margin-bottom: 0.4rem; }
.pillars div:nth-child(2) .pi { background: var(--muted-teal); }
.pillars div:nth-child(3) .pi { background: var(--stormy); color: #fff; }
.pillars div:nth-child(4) .pi { background: var(--coffee); color: #fff; }
.pillars h3 { font-size: 1.3rem; }
.pillars p { color: var(--body); font-size: 0.96rem; }

/* ---------- where we're going ---------- */

.worlds { display: grid; grid-template-columns: 1fr 1fr 1.25fr; gap: 1rem; align-items: stretch; }
.world { border-radius: 20px; padding: 2rem 1.9rem; display: grid; gap: 0.75rem; align-content: start; background: var(--card); box-shadow: 0 1px 0 var(--rule), 0 20px 50px -30px rgba(17, 11, 17, 0.35); }
.world .tag { font: 600 0.78rem var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--stormy); }
.world h3 { font-size: clamp(1.5rem, 2.4vw, 1.95rem); line-height: 1.08; }
.world p { color: var(--body); }
.world.goal { background: var(--stormy); color: #fff; box-shadow: none; }
.world.goal .tag { color: var(--periwinkle); }
.world.goal p { color: rgba(255, 255, 255, 0.85); }
.world.goal h3 { color: #fff; }

@media (max-width: 960px) {
	.problems, .worlds { grid-template-columns: 1fr; }
	.problem { min-height: 0; }
	.pillars { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) { .pillars { grid-template-columns: 1fr; } }