/* ------------------------------------------------------------------
   House of KI NO BI × TableCheck — audit site
   Direction: Kyoto editorial. Washi paper, sumi ink, copper accent.
   No JS. Two font families. Motion on transform/opacity only.
------------------------------------------------------------------- */

:root {
  --paper: oklch(96.5% 0.012 85);
  --paper-deep: oklch(92.5% 0.02 80);
  --ink: oklch(22% 0.012 60);
  --ink-soft: oklch(40% 0.015 60);
  --ink-mute: oklch(47% 0.012 60);
  --rule: oklch(80% 0.02 75);
  --copper: oklch(52% 0.11 65);       /* accessible gold, 5.6:1 on paper */
  --copper-ink: oklch(40% 0.1 62);
  --copper-wash: oklch(90% 0.05 75);
  --pine: oklch(28% 0.045 165);
  --pine-deep: oklch(20% 0.035 165);
  --vermillion: oklch(50% 0.17 32);
  --vermillion-wash: oklch(93% 0.04 32);
  --moss: oklch(46% 0.08 130);
  --moss-wash: oklch(92% 0.04 130);
  --slate-wash: oklch(91% 0.008 240);

  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: "Instrument Sans", "Avenir Next", "Segoe UI", Helvetica, sans-serif;
  --font-jp: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;

  --text-xs: 0.78rem;
  --text-sm: 0.9rem;
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  --text-lg: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem);
  --text-h2: clamp(1.9rem, 1.3rem + 2.4vw, 3.2rem);
  --text-hero: clamp(2.8rem, 1.2rem + 7vw, 7.5rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-section: clamp(4rem, 3rem + 5vw, 8rem);
  --gutter: clamp(1rem, 4vw, 4rem);
  --measure: 66ch;

  --duration-fast: 160ms;
  --duration-normal: 420ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
.nowrap { white-space: nowrap; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.32;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.35 0 0 0 0 0.3 0 0 0 0 0.22 0 0 0 0.35 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

a { color: var(--copper-ink); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--vermillion); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 3px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 var(--space-2); max-width: var(--measure); }
p:last-child { margin-bottom: 0; }

.kicker {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper-ink);
  font-weight: 600;
}

.jp {
  font-family: var(--font-jp);
  color: var(--ink-soft);
  font-weight: 400;
}

.wrap {
  padding-inline: var(--gutter);
  max-width: 82rem;
  margin-inline: auto;
}

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

.masthead {
  padding-block: var(--space-3) var(--space-section);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  position: relative;
  overflow: clip;
}

.masthead__bar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--ink);
  padding-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.masthead__bar nav a { margin-left: var(--space-2); }

.masthead__title {
  font-size: var(--text-hero);
  font-variation-settings: "opsz" 144, "SOFT" 40;
  max-width: 16ch;
  animation: rise var(--duration-normal) var(--ease-out-expo) both;
}
.masthead__title em {
  font-style: italic;
  color: var(--copper);
  font-weight: 400;
}

.masthead__lede {
  font-size: var(--text-lg);
  color: var(--ink-soft);
  max-width: 48ch;
  animation: rise var(--duration-normal) var(--ease-out-expo) 120ms both;
}

.vertical-mark {
  position: absolute;
  right: var(--gutter);
  top: 6rem;
  writing-mode: vertical-rl;
  font-family: var(--font-jp);
  font-size: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  letter-spacing: 0.4em;
  color: var(--ink-soft);
  border-left: 1px solid var(--rule);
  padding-left: 0.6rem;
  opacity: 0.8;
}
@media (max-width: 700px) { .vertical-mark { display: none; } }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- stat strip ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.stat {
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-right: 1px solid var(--rule);
  animation: rise var(--duration-normal) var(--ease-out-expo) both;
}
.stat:nth-child(2) { animation-delay: 60ms; }
.stat:nth-child(3) { animation-delay: 120ms; }
.stat:nth-child(4) { animation-delay: 180ms; }
.stat:nth-child(5) { animation-delay: 240ms; }
.stat:last-child { border-right: 0; }
.stat + .stat { padding-left: var(--space-2); }
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 1.4rem + 3vw, 4rem);
  line-height: 1;
  font-variation-settings: "opsz" 144;
  color: var(--ink);
}
.stat__num.is-bad { color: var(--vermillion); }
.stat__label { font-size: var(--text-sm); color: var(--ink-soft); margin-top: 0.35rem; }

/* ---------- sections ---------- */

.section { padding-block: var(--space-section); }
.section--tight { padding-block: var(--space-4); }
.section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.section__head h2 { font-size: var(--text-h2); max-width: 20ch; }
.section__head p { color: var(--ink-soft); }
.section__num {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--copper);
  font-size: var(--text-lg);
}

@media (min-width: 900px) {
  .section__head { grid-template-columns: 1fr 1fr; align-items: end; }
  .section__head > p { justify-self: end; }
}

/* ---------- evidence (before) ---------- */

.evidence {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  .evidence { grid-template-columns: 1.6fr 1fr; align-items: start; }
}

.shot {
  position: relative;
  margin: 0;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  box-shadow: 0 30px 60px -40px rgb(40 30 10 / 0.5), 0 2px 0 rgb(255 255 255 / 0.6) inset;
}
.shot img { display: block; width: 100%; height: auto; max-width: 100%; }
.shot figcaption {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  padding: var(--space-1) var(--space-2);
  border-top: 1px solid var(--rule);
  background: var(--paper);
}
.shot-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(9rem, 20rem)); gap: var(--space-2); }

.callout {
  position: absolute;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--vermillion);
  color: #fff;
  font-weight: 700;
  font-size: var(--text-xs);
  display: grid;
  place-items: center;
  box-shadow: 0 0 0 4px rgb(255 255 255 / 0.7);
  transform: translate(-50%, -50%);
}

.callout-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}
.callout-list li {
  display: grid;
  grid-template-columns: 1.7rem 1fr;
  gap: var(--space-2);
  align-items: start;
}
.callout-list .callout { position: static; transform: none; }
.callout-list strong { display: block; }
.callout-list span { color: var(--ink-soft); font-size: var(--text-sm); }

/* ---------- findings ---------- */

.track {
  border-top: 1px solid var(--ink);
  padding-top: var(--space-3);
  margin-bottom: var(--space-4);
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  .track { grid-template-columns: 16rem minmax(0, 1fr); }
}
.track__meta h3 { font-size: var(--text-lg); }
.track__meta .owner { color: var(--ink-soft); font-size: var(--text-sm); margin-top: var(--space-1); }

.finding-list { list-style: none; margin: 0; padding: 0; }
.finding {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--rule);
}
.finding__id {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--copper);
  font-size: var(--text-lg);
  line-height: 1.2;
}
.finding__title { font-weight: 600; margin-bottom: 0.25rem; }
.finding__body { color: var(--ink-soft); font-size: var(--text-sm); max-width: var(--measure); }
.finding__fix { margin-top: 0.5rem; font-size: var(--text-sm); }
.finding__fix::before { content: "Fix · "; color: var(--copper-ink); font-weight: 600; }

.chip {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  margin-left: 0.4rem;
  vertical-align: middle;
}
.chip--critical { background: var(--vermillion); color: #fff; }
.chip--serious { background: var(--copper-wash); color: var(--copper-ink); }
.chip--moderate { background: var(--moss-wash); color: var(--moss); }
.chip--low { background: var(--slate-wash); color: var(--ink-soft); }

.quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  border-left: 2px solid var(--copper);
  padding-left: var(--space-2);
  margin: var(--space-2) 0;
  color: var(--ink);
  max-width: 40ch;
}

/* ---------- plan ---------- */

.phases { counter-reset: phase; list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.phase {
  counter-increment: phase;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  position: relative;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}
.phase:hover { transform: translateY(-2px); }
.phase::before {
  content: "0" counter(phase);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 2rem + 2vw, 4rem);
  color: var(--copper);
  line-height: 1;
}
@media (min-width: 900px) {
  .phase { grid-template-columns: 6rem minmax(0, 1fr) 12rem; align-items: start; }
}
.phase h3 { font-size: var(--text-lg); margin-bottom: 0.4rem; }
.phase ol { margin: 0.5rem 0 0; padding-left: 1.2rem; color: var(--ink-soft); font-size: var(--text-sm); }
.phase ol li { margin-bottom: 0.3rem; }
.phase__meta { font-size: var(--text-sm); color: var(--ink-soft); }
.phase__meta strong { display: block; color: var(--ink); }
.phase--optional { background: transparent; border-style: dashed; }

/* ---------- tables ---------- */

.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: var(--text-sm); }
th, td { text-align: left; padding: 0.6rem 0.8rem 0.6rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--ink); border-bottom-color: var(--ink); }
td { color: var(--ink-soft); }
td:first-child { color: var(--ink); }

.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.checks li { display: grid; grid-template-columns: 1.2rem 1fr; gap: 0.6rem; }
.checks li::before { content: ""; width: 1rem; height: 1rem; border: 1.5px solid var(--copper); margin-top: 0.2rem; }

pre {
  background: var(--ink);
  color: var(--paper);
  padding: var(--space-2);
  overflow-x: auto;
  font-size: var(--text-sm);
  border-radius: 2px;
}

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

.site-footer {
  border-top: 1px solid var(--ink);
  padding-block: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--ink-soft);
  display: grid;
  gap: var(--space-2);
}
@media (min-width: 900px) { .site-footer { grid-template-columns: 1fr 1fr; } }

.btn {
  display: inline-block;
  font-family: inherit;
  border: 0;
  cursor: pointer;
  min-height: 2.75rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1.2rem;
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out-expo), background var(--duration-fast);
}
.btn:hover { background: var(--copper-ink); color: var(--paper); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }

/* ==================================================================
   PROTOTYPE PAGE — proposed booking page
================================================================== */

.proto-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding-block: var(--space-2);
  font-size: var(--text-sm);
}
.proto-nav__brand { font-family: var(--font-display); font-size: 1.3rem; text-decoration: none; color: var(--ink); }
.proto-nav__brand small { font-family: var(--font-jp); font-size: 0.75rem; color: var(--ink-mute); margin-left: 0.5rem; }
.proto-nav .lang { border: 1px solid var(--rule); padding: 0.3rem 0.6rem; border-radius: 2px; background: transparent; font: inherit; color: inherit; min-height: 2.5rem; }

.proto-hero {
  background: var(--pine);
  color: var(--paper);
  position: relative;
  overflow: clip;
  padding-block: var(--space-section);
}
.proto-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60rem 30rem at 85% 20%, oklch(45% 0.09 80 / 0.55), transparent 60%),
    radial-gradient(40rem 20rem at 10% 90%, oklch(35% 0.06 165 / 0.8), transparent 60%);
}
.proto-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.25;
  background-image: repeating-linear-gradient(90deg, transparent 0 22px, rgb(255 255 255 / 0.06) 22px 23px);
}
.proto-hero > .wrap { position: relative; z-index: 1; display: grid; gap: var(--space-3); }
.proto-hero h1 { font-size: clamp(2.4rem, 1.4rem + 4.5vw, 5rem); max-width: 16ch; }
.proto-hero h1 em { font-style: italic; color: oklch(85% 0.1 85); font-weight: 400; }
.proto-hero p { color: oklch(88% 0.02 90); max-width: 46ch; }
.proto-hero .kicker { color: oklch(85% 0.1 85); }
.proto-hero .facts { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-3); font-size: var(--text-sm); color: oklch(88% 0.02 90); }
.proto-hero .facts strong { display: block; color: #fff; font-family: var(--font-display); font-size: 1.2rem; font-weight: 500; }

.booking {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
  padding-block: var(--space-4) var(--space-section);
}
@media (min-width: 960px) {
  .booking { grid-template-columns: minmax(0, 1fr) 22rem; align-items: start; }
}

.step { margin-bottom: var(--space-4); }
.step__head { display: flex; align-items: baseline; gap: var(--space-2); margin-bottom: var(--space-2); }
.step__num { font-family: var(--font-display); font-style: italic; color: var(--copper); font-size: var(--text-lg); }
.step h2 { font-size: var(--text-lg); font-weight: 600; font-family: var(--font-body); letter-spacing: 0; }

.note {
  background: var(--copper-wash);
  border-left: 3px solid var(--copper);
  padding: var(--space-2);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
  max-width: none;
}
.note p { max-width: none; }

.cards { display: grid; gap: var(--space-2); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: clip;
  transition: transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -30px rgb(40 30 10 / 0.6); }
.card:has(input:checked) { box-shadow: 0 0 0 2px var(--copper), 0 20px 40px -30px rgb(40 30 10 / 0.6); }
.card:has(input:focus-visible) { outline: 2px solid var(--vermillion); outline-offset: 3px; }
.card input { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; cursor: pointer; margin: 0; }
.card__art {
  aspect-ratio: 16 / 7;
  max-width: 100%;
  background: var(--pine-deep);
  position: relative;
}
.card__art--seminar { background: linear-gradient(135deg, oklch(30% 0.05 165), oklch(45% 0.1 75)); }
.card__art--palace { background: linear-gradient(135deg, oklch(22% 0.04 60), oklch(50% 0.12 62)); }
.card__art--set { background: linear-gradient(135deg, oklch(35% 0.06 165), oklch(60% 0.1 120)); }
.card__art span {
  position: absolute; left: 0.8rem; bottom: 0.6rem;
  font-family: var(--font-jp); color: rgb(255 255 255 / 0.85); letter-spacing: 0.3em; font-size: 0.85rem;
}
.card__body { padding: var(--space-2); display: grid; gap: 0.5rem; align-content: start; }
.card__title { font-weight: 600; font-size: 1.05rem; display: flex; justify-content: space-between; gap: 0.5rem; align-items: baseline; }
.card__price { font-family: var(--font-display); font-size: 1.3rem; white-space: nowrap; }
.card__desc { font-size: var(--text-sm); color: var(--ink-soft); max-width: none; }
.card__meta { display: flex; flex-wrap: wrap; gap: 0.4rem; font-size: var(--text-xs); }
.tag { border: 1px solid var(--rule); padding: 0.15rem 0.5rem; border-radius: 999px; color: var(--ink-soft); }
.tag--warn { border-color: var(--vermillion); color: var(--vermillion); }
.dates { display: flex; flex-wrap: wrap; gap: 0.35rem; padding: 0 var(--space-2) var(--space-2); }
.dates span {
  font-size: var(--text-xs);
  background: var(--paper-deep);
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
  font-variant-numeric: tabular-nums;
}
.dates .more { background: transparent; color: var(--copper-ink); }
.card__check {
  position: absolute; top: 0.7rem; right: 0.7rem;
  width: 1.5rem; height: 1.5rem; border-radius: 50%;
  background: #fff; border: 1.5px solid var(--rule);
  display: grid; place-items: center; font-size: 0.8rem; color: transparent;
  transition: background var(--duration-fast), color var(--duration-fast);
}
.card:has(input:checked) .card__check { background: var(--copper); color: #fff; border-color: var(--copper); }

.field { display: grid; gap: 0.35rem; margin-bottom: var(--space-2); }
.field label { font-weight: 600; font-size: var(--text-sm); }
.field .hint { font-size: var(--text-xs); color: var(--ink-mute); }
.field input, .field select, .field textarea {
  font: inherit;
  padding: 0.7rem 0.8rem;
  border: 1.5px solid var(--rule);
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
  min-height: 2.75rem;
  width: 100%;
}
.field input:hover, .field select:hover { border-color: var(--ink-mute); }
.field-row { display: grid; gap: var(--space-2); grid-template-columns: 1fr; }
@media (min-width: 640px) { .field-row { grid-template-columns: 1fr 1fr; } }

.stepper { display: inline-grid; grid-template-columns: 2.75rem 4rem 2.75rem; border: 1.5px solid var(--rule); border-radius: 2px; overflow: clip; }
.stepper button { font: inherit; font-size: 1.2rem; background: var(--paper-deep); border: 0; min-height: 2.75rem; cursor: pointer; color: var(--ink); }
.stepper button:hover { background: var(--copper-wash); }
.stepper output { display: grid; place-items: center; font-weight: 600; font-variant-numeric: tabular-nums; }

.consent { display: grid; grid-template-columns: 1.5rem 1fr; gap: 0.6rem; align-items: start; font-size: var(--text-sm); margin-bottom: var(--space-2); }
.consent input { width: 1.5rem; height: 1.5rem; margin: 0; accent-color: var(--copper); }

.summary {
  position: sticky;
  top: var(--space-2);
  background: var(--ink);
  color: var(--paper);
  padding: var(--space-3);
  border-radius: 3px;
  display: grid;
  gap: var(--space-2);
}
.summary h2 { font-size: var(--text-lg); color: oklch(85% 0.1 85); }
.summary dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1rem; font-size: var(--text-sm); }
.summary dt { color: oklch(72% 0.02 90); }
.summary dd { margin: 0; }
.summary .total { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid rgb(255 255 255 / 0.2); padding-top: var(--space-2); }
.summary .total strong { font-family: var(--font-display); font-size: 1.8rem; font-weight: 500; }
.summary .btn { width: 100%; text-align: center; background: var(--copper); color: #fff; }
.summary .btn:hover { background: oklch(60% 0.12 65); }
.summary .policy { font-size: var(--text-xs); color: oklch(72% 0.02 90); }

.details-policy { border-top: 1px solid var(--rule); padding-block: var(--space-2); }
.details-policy summary { cursor: pointer; font-weight: 600; font-size: var(--text-sm); }
.details-policy p { font-size: var(--text-sm); color: var(--ink-soft); margin-top: var(--space-1); }

.compare-strip { background: var(--paper-deep); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding-block: var(--space-2); font-size: var(--text-sm); }
.compare-strip .wrap { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-3); justify-content: space-between; align-items: center; }

/* ---------- prototype: interactive states ---------- */

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.plain-fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.field__label { font-weight: 600; font-size: var(--text-sm); }

.demo-badge {
  display: inline-block;
  background: var(--vermillion);
  color: #fff;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  margin-right: 0.4rem;
}
.strip-links { display: flex; gap: var(--space-2); flex-wrap: wrap; }

.stepper button:disabled { color: var(--ink-mute); cursor: not-allowed; background: var(--paper); }
.stepper button:disabled:hover { background: var(--paper); }

.error {
  color: var(--vermillion);
  font-size: var(--text-xs);
  font-weight: 600;
  margin: 0;
  max-width: none;
}
.field input[aria-invalid="true"], .field select[aria-invalid="true"] { border-color: var(--vermillion); }
.consent input[aria-invalid="true"] { outline: 2px solid var(--vermillion); outline-offset: 2px; }

.summary .breakdown { list-style: none; margin: 0; padding: 0; font-size: var(--text-sm); color: oklch(85% 0.02 90); display: grid; gap: 0.25rem; }

.confirmation { padding-block: var(--space-4) var(--space-section); }
.confirmation__panel {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--vermillion);
  padding: var(--space-3);
  max-width: 44rem;
  display: grid;
  gap: var(--space-2);
  animation: rise var(--duration-normal) var(--ease-out-expo) both;
}
.confirmation__panel h2 { font-size: var(--text-h2); }
.confirmation__panel h2:focus { outline: none; }
.confirmation__rows { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1.2rem; font-size: var(--text-sm); }
.confirmation__rows dt { color: var(--ink-soft); }
.confirmation__rows dd { margin: 0; }

/* Japanese page: system fonts, tighter tracking, taller lines */
html[lang="ja"] {
  --font-display: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", "Source Han Serif", serif;
  --font-body: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
}
html[lang="ja"] body { line-height: 1.75; }
html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3 { letter-spacing: 0; line-height: 1.3; font-weight: 600; }
html[lang="ja"] .proto-hero h1 { font-size: clamp(1.9rem, 1.2rem + 3.2vw, 3.6rem); max-width: 22ch; }
html[lang="ja"] .kicker { letter-spacing: 0.12em; }
html[lang="ja"] .masthead__title em, html[lang="ja"] .proto-hero h1 em { font-style: normal; }

/* ---------- utilities (CSP forbids inline style attributes) ---------- */

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.h3-sub { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.co-1 { left: 12%; top: 9%; }
.co-2 { left: 30%; top: 48%; }
.co-3 { left: 20%; top: 88%; }

/* ---------- prototype motion (transform, opacity, stroke only) ---------- */

.proto-hero .kicker { display: inline-block; }
.proto-hero .kicker, .proto-hero h1, .proto-hero p, .proto-hero .facts {
  animation: rise var(--duration-normal) var(--ease-out-expo) backwards;
}
.proto-hero h1 { animation-delay: 90ms; }
.proto-hero p { animation-delay: 180ms; }
.proto-hero .facts { animation-delay: 270ms; }

.cards .card { animation: rise var(--duration-normal) var(--ease-out-expo) 360ms backwards; }
.cards .card:nth-child(2) { animation-delay: 420ms; }
.cards .card:nth-child(3) { animation-delay: 480ms; }
.cards .card:nth-child(4) { animation-delay: 540ms; }

@keyframes pop {
  0% { transform: scale(0.6); }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); }
}
.card:has(input:checked) .card__check { animation: pop 320ms var(--ease-out-expo); }

.stepper button { transition: transform var(--duration-fast) var(--ease-out-expo), background var(--duration-fast); }
.stepper button:active:not(:disabled) { transform: scale(0.9); }

.summary .total strong { display: inline-block; transform-origin: right center; }

.confirmation__check { color: var(--copper); width: 3rem; height: 3rem; }
.confirmation__check circle { stroke-dasharray: 140; stroke-dashoffset: 140; animation: draw 600ms var(--ease-out-expo) 100ms forwards; }
.confirmation__check path { stroke-dasharray: 32; stroke-dashoffset: 32; animation: draw 400ms var(--ease-out-expo) 520ms forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.confirmation__rows > * { animation: rise var(--duration-normal) var(--ease-out-expo) backwards; }

@media (prefers-reduced-motion: reduce) {
  .confirmation__check circle, .confirmation__check path { stroke-dashoffset: 0; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media print {
  body::before { display: none; }
  .btn, .proto-nav .lang { display: none; }
}