/* ─────────────────────────────────────────────────────────────
   Muzukashii — Focused Sudoku · landing page styles
   Palette and type lifted from /Muzukashii/DESIGN.md (Koyo theme).
   ───────────────────────────────────────────────────────────── */

:root {
  --surface: #fbf9f4;
  --surface-dim: #dbdad5;
  --surface-bright: #fbf9f4;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f3ee;
  --surface-container: #f0eee9;
  --surface-container-high: #eae8e3;
  --surface-container-highest: #e4e2dd;

  --on-surface: #1b1c19;
  --on-surface-variant: #57423e;
  --inverse-surface: #30312e;
  --inverse-on-surface: #f2f1ec;

  --outline: #8a716d;
  --outline-variant: #dec0ba;

  --primary: #6c1407;          /* Momiji red */
  --on-primary: #ffffff;
  --primary-container: #8c2b1b;
  --on-primary-container: #ffa897;
  --primary-fixed: #ffdad3;
  --primary-fixed-dim: #ffb4a6;

  --secondary: #7c5800;        /* Ginkgo gold */
  --secondary-container: #fdc352;
  --on-secondary: #ffffff;

  --tertiary: #4b3027;
  --tertiary-container: #64463d;

  --error: #ba1a1a;
  --error-container: #ffdad6;

  /* derived */
  --shadow-wood:  0 1px 2px rgba(76,48,39,.06),
                  0 6px 18px rgba(76,48,39,.06),
                  0 24px 56px rgba(76,48,39,.05);
  --shadow-card:  0 1px 1px rgba(76,48,39,.04),
                  0 2px 6px rgba(76,48,39,.04),
                  0 12px 28px rgba(76,48,39,.05);

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius:    8px;
  --radius-lg: 14px;
  --radius-xl: 22px;

  --unit: 8px;
  --container: 1200px;
  --gutter: 24px;
  --margin: 32px;
  --section-gap: 96px;

  --font-display: 'EB Garamond', 'Iowan Old Style', 'Apple Garamond', Garamond, 'Times New Roman', serif;
  --font-sans:   'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

/* ── reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }

/* Washi paper texture (subtle noise + warm gradient).
   Layered SVG noise via data-URI so the page is single-file. */
.washi {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 600px at 12% -10%, rgba(255,180,166,0.18), transparent 65%),
    radial-gradient(700px 500px at 95% 6%, rgba(253,195,82,0.12), transparent 70%),
    radial-gradient(1200px 800px at 50% 110%, rgba(108,20,7,0.06), transparent 70%);
  mix-blend-mode: multiply;
}
.washi::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.34 0 0 0 0 0.26 0 0 0 0 0.24 0 0 0 0.10 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  opacity: .55;
  mix-blend-mode: multiply;
}

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

/* ── typography ──────────────────────────────────────────── */
.display, .h1, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--on-surface);
  letter-spacing: -0.01em;
  margin: 0;
}
.display {
  font-size: clamp(2.5rem, 5.4vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}
.h1 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.12;
}
h3 {
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 0 0 .35em;
}
em {
  font-style: italic;
  color: var(--primary);
}
.lede {
  font-size: clamp(1.05rem, 1.25vw, 1.18rem);
  line-height: 1.65;
  color: var(--on-surface-variant);
  margin: 0;
  max-width: 56ch;
}
.aside {
  font-size: .96rem;
  color: var(--on-surface-variant);
  max-width: 50ch;
  line-height: 1.6;
  margin: 0;
}
.aside .own  { color: var(--primary-container); font-weight: 600; }
.aside .given{ color: var(--on-surface); font-weight: 600; }
.aside .conflict{ color: var(--error); font-weight: 600; }

.eyebrow {
  font-size: .94rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: var(--on-surface-variant);
  margin: 0 0 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: .35em;
}
.eyebrow span { color: var(--on-surface); }
.eyebrow--primary { color: var(--primary); }

.label {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-weight: 600;
  color: var(--on-surface-variant);
  margin: 0 0 .6em;
}

/* ── nav ─────────────────────────────────────────────────── */
.site-nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px var(--margin) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  overflow: hidden;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-card);
}
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.brand-mark__grid {
  display: grid;
  grid-template: repeat(3, 1fr) / repeat(3, 1fr);
  gap: 2px;
  width: 20px;
  height: 20px;
}
.brand-mark__grid i {
  display: block;
  background: transparent;
  border-radius: 1px;
}
.brand-mark__grid i.filled { background: var(--primary); }
.brand-text { display: inline-flex; flex-direction: column; line-height: 1; }
.brand-text__name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.brand-text__sub {
  font-size: .58rem;
  letter-spacing: 0.32em;
  color: var(--on-surface-variant);
  margin-top: 4px;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav__links a {
  font-size: .92rem;
  color: var(--on-surface-variant);
  transition: color .2s ease;
}
.site-nav__links a:hover { color: var(--primary); }
.site-nav__links .nav-cta {
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--on-surface);
  color: var(--surface);
  font-weight: 500;
  font-size: .88rem;
}
.site-nav__links .nav-cta:hover {
  background: var(--primary);
  color: var(--on-primary);
}

/* ── shared section frame ────────────────────────────────── */
main > section {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--section-gap) var(--margin);
  position: relative;
}
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head--center .eyebrow { justify-content: center; }

/* ── buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 500;
  font-size: .95rem;
  border: 1px solid transparent;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn--lg { padding: 16px 26px; font-size: 1rem; }
.btn--primary {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: var(--shadow-card);
}
.btn--primary:hover { background: var(--primary-container); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--on-surface);
  border-color: var(--outline);
}
.btn--ghost:hover {
  background: var(--surface-container);
  border-color: var(--on-surface-variant);
}
.btn[aria-disabled="true"] { opacity: .92; cursor: default; }
.btn[aria-disabled="true"]:hover { transform: none; }

/* ── hero ────────────────────────────────────────────────── */
.hero {
  padding-top: 64px !important;
  padding-bottom: var(--section-gap) !important;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 72px;
  align-items: center;
}
.hero__copy { max-width: 580px; }
.hero h1 { margin-bottom: 28px; }
.hero h1 em { color: var(--primary); font-style: italic; }
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 36px 0 28px;
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  color: var(--on-surface-variant);
  font-size: .82rem;
  letter-spacing: .04em;
}
.hero__meta li {
  position: relative;
  padding-left: 14px;
}
.hero__meta li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 6px; height: 6px;
  background: var(--secondary-container);
  border-radius: 50%;
}

.hero__art {
  position: relative;
  min-height: 540px;
}
.leaf {
  position: absolute;
  width: 320px;
  opacity: .14;
  color: var(--primary);
  filter: blur(.4px);
  pointer-events: none;
}
.leaf--1 { top: -20px; right: -40px; transform: rotate(28deg); }
.leaf--2 {
  bottom: -40px;
  left: -20px;
  width: 220px;
  color: var(--secondary-container);
  opacity: .35;
  transform: rotate(-18deg);
}

/* ── phone frame ─────────────────────────────────────────── */
.phone {
  background: linear-gradient(180deg, #2a2724 0%, #1b1c19 100%);
  border-radius: 38px;
  padding: 8px;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.04),
    0 30px 60px -20px rgba(76,48,39,.35),
    0 12px 24px rgba(76,48,39,.18);
  position: relative;
  overflow: hidden;
}
.phone img {
  display: block;
  width: 100%;
  border-radius: 30px;
}
.phone--menu {
  position: absolute;
  width: 250px;
  right: 14%;
  top: 0;
  transform: rotate(-4deg);
  z-index: 1;
}
.phone--game {
  position: absolute;
  width: 280px;
  right: -2%;
  top: 60px;
  transform: rotate(6deg);
  z-index: 2;
}

.phone--lg {
  width: 320px;
  flex: 0 0 320px;
  margin: 0;
}
.phone--lg figcaption {
  position: absolute;
  bottom: -42px;
  left: 0; right: 0;
  text-align: center;
  font-size: .85rem;
  color: var(--on-surface-variant);
  background: none;
  padding: 0;
  border-radius: 0;
}

/* ── concept (the interactive demo) ──────────────────────── */
.concept {
  border-top: 1px solid var(--outline-variant);
}
.concept__intro {
  max-width: 720px;
  margin-bottom: 56px;
}
.concept__intro h2 { margin: 0 0 24px; }
.concept__intro .aside { margin-top: 24px; }

.concept__demo {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  background: var(--surface-container-low);
  border-radius: var(--radius-xl);
  padding: 56px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.concept__demo::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 0.34 0 0 0 0 0.26 0 0 0 0 0.24 0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  opacity: .6;
  pointer-events: none;
  mix-blend-mode: multiply;
}
.concept__demo > * { position: relative; z-index: 1; }

/* demo: 9×9 board with focused box */
.demo-board {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  aspect-ratio: 1 / 1;
  width: 100%;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 10px;
  gap: 0;
  box-shadow: inset 0 0 0 1px var(--outline-variant);
  font-family: var(--font-sans);
  position: relative;
}
.demo-board .cell {
  display: grid;
  place-items: center;
  font-weight: 500;
  font-size: clamp(.9rem, 2vw, 1.4rem);
  color: var(--on-surface);
  border-right: 1px solid rgba(138,113,109,.18);
  border-bottom: 1px solid rgba(138,113,109,.18);
  background: transparent;
  transition: background .35s ease, color .35s ease, opacity .35s ease;
  position: relative;
}
/* heavier 3×3 outlines */
.demo-board .cell[data-col="2"],
.demo-board .cell[data-col="5"] { border-right-color: rgba(138,113,109,.55); border-right-width: 1.5px; }
.demo-board .cell[data-row="2"],
.demo-board .cell[data-row="5"] { border-bottom-color: rgba(138,113,109,.55); border-bottom-width: 1.5px; }
.demo-board .cell[data-col="8"] { border-right: none; }
.demo-board .cell[data-row="8"] { border-bottom: none; }

/* Non-focused cells: fully invisible — only the active 1/9 is rendered,
   mirroring the app's actual game view. We also strip cell-level borders
   so the empty area stays clean. */
.demo-board .cell.dim {
  color: transparent;
  background: transparent;
  border-color: transparent;
}
.demo-board .cell.dim .arrow { display: none; }

.demo-board .cell.active {
  background: var(--primary-fixed);
}
/* Outline the active 3×3 on the top and left edges (right/bottom inherit
   the heavier 3×3 separators from the rules above). */
.demo-board .cell.active[data-row="0"],
.demo-board .cell.active[data-row="3"],
.demo-board .cell.active[data-row="6"] {
  border-top: 1.5px solid rgba(138,113,109,.55);
}
.demo-board .cell.active[data-col="0"],
.demo-board .cell.active[data-col="3"],
.demo-board .cell.active[data-col="6"] {
  border-left: 1.5px solid rgba(138,113,109,.55);
}
.demo-board .cell.active.given { color: var(--on-surface); }
.demo-board .cell.active.own { color: var(--primary-container); font-weight: 600; }
/* Conflict overrides player colour — error red, matching the app. */
.demo-board .cell.active.conflict {
  color: var(--error);
  font-weight: 700;
}
.demo-board .cell.selected {
  background: var(--primary-fixed-dim);
  outline: 2px solid var(--primary);
  outline-offset: -2px;
  z-index: 2;
}
.demo-board .cell .arrow {
  position: absolute;
  font-size: 1rem;
  color: var(--error);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}
.demo-board .cell .arrow.up    { top: 3px;    left: 50%; transform: translateX(-50%); }
.demo-board .cell .arrow.down  { bottom: 3px; left: 50%; transform: translateX(-50%); }
.demo-board .cell .arrow.left  { left: 4px;   top: 50%;  transform: translateY(-50%); }
.demo-board .cell .arrow.right { right: 4px;  top: 50%;  transform: translateY(-50%); }

.demo-side {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.demo-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  width: 160px;
  height: 160px;
  background: var(--surface-container-lowest);
  border-radius: var(--radius);
  padding: 6px;
  gap: 4px;
  box-shadow: inset 0 0 0 1px var(--outline-variant);
}
.demo-mini button {
  border: 1px solid var(--outline-variant);
  background: transparent;
  border-radius: var(--radius-xs);
  padding: 0;
  transition: background .2s ease, border-color .2s ease, transform .15s ease;
}
.demo-mini button:hover {
  background: var(--surface-container);
  border-color: var(--on-surface-variant);
}
.demo-mini button[aria-current="true"] {
  background: var(--primary-fixed);
  border-color: var(--primary);
  box-shadow: inset 0 0 0 1.5px var(--primary);
}
.demo-mini button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.demo-hint p { margin: 0; }
.demo-hint p:first-child {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--on-surface-variant);
}
.demo-coord {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--primary);
  margin-top: 6px !important;
}

.demo-keys {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: .8rem;
  color: var(--on-surface-variant);
}
.demo-keys .key {
  display: inline-grid;
  place-items: center;
  width: 28px; height: 28px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-bottom-width: 2px;
  border-radius: var(--radius-xs);
  font-family: var(--font-sans);
  font-size: .9rem;
}
.demo-keys .key-label { margin-left: 8px; }

/* ── features grid ───────────────────────────────────────── */
.features { border-top: 1px solid var(--outline-variant); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature {
  padding: 32px 28px;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(138,113,109,.08);
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-wood);
}
.feature__icon {
  display: inline-grid;
  place-items: center;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-fixed);
  color: var(--primary);
  margin-bottom: 22px;
}
.feature__icon--big {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  line-height: 1;
}
.feature__kanji {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  letter-spacing: .12em;
  color: var(--primary);
  margin-bottom: 14px;
  line-height: 1;
}
.feature h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  margin: 0 0 8px;
  color: var(--on-surface);
}
.feature p {
  margin: 0;
  font-size: .96rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

/* ── screens ─────────────────────────────────────────────── */
.screens { border-top: 1px solid var(--outline-variant); }
.section-head__lede { max-width: 60ch; margin: 18px auto 0; }
.section-head--center .section-head__lede { text-align: center; }
.screens__row {
  display: flex;
  gap: 56px;
  justify-content: center;
  flex-wrap: wrap;
  padding-bottom: 60px;
}
.screens__row--quad {
  gap: 36px 28px;
  padding-bottom: 80px;
}
.screens__row--quad .phone--lg {
  width: 240px;
  flex: 0 0 240px;
}
.screens__row--quad .phone--lg figcaption {
  bottom: -50px;
  font-size: .82rem;
  line-height: 1.4;
}
.phone--lg { position: relative; }

/* ── game center section ─────────────────────────────────── */
.gc { border-top: 1px solid var(--outline-variant); }
.gc__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.gc-card {
  padding: 30px 28px;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(138,113,109,.08);
}
.gc-card .label { color: var(--primary); margin-bottom: 18px; }
.gc-card--accent {
  background: linear-gradient(180deg, var(--primary-fixed) 0%, var(--surface-container-lowest) 90%);
}
.gc-card--play {
  grid-column: span 3;
  background: var(--on-surface);
  color: var(--inverse-on-surface);
  border-color: var(--on-surface);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.gc-card--play .label { color: var(--primary-fixed-dim); }
.gc-card--play p { margin: 0; font-size: 1.02rem; line-height: 1.55; color: var(--inverse-on-surface); }
.gc-card--play b { color: var(--primary-fixed); }
.gc-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.gc-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(138,113,109,.18);
}
.gc-list li:last-child { border-bottom: none; padding-bottom: 0; }
.gc-list b {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.08rem;
  color: var(--on-surface);
}
.gc-list span {
  font-size: .88rem;
  color: var(--on-surface-variant);
  line-height: 1.5;
}
.gc-list--ach li { padding-bottom: 8px; gap: 0; }
.gc-list--ach b { font-size: .98rem; }
.gc-list--ach span { font-size: .82rem; }

/* ── supporter section ───────────────────────────────────── */
.supporter {
  border-top: 1px solid var(--outline-variant);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 72px;
  align-items: center;
}
.supporter__copy { max-width: 580px; }
.supporter__copy h2 { margin-bottom: 22px; }
.supporter__copy .lede { margin-bottom: 26px; }
.supporter__copy .aside { margin-top: 24px; }
.perks {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0 0 8px;
}
.perks li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  background: var(--surface-container-low);
  border-radius: var(--radius);
  border-left: 3px solid var(--primary);
}
.perks b {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--on-surface);
}
.perks span {
  font-size: .92rem;
  color: var(--on-surface-variant);
  line-height: 1.5;
}
.supporter__win {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.supporter__win .phone--lg {
  width: 280px;
  flex: 0 0 280px;
}
.supporter__caption {
  margin: 0;
  font-size: .9rem;
  line-height: 1.55;
  color: var(--on-surface-variant);
  max-width: 320px;
  text-align: center;
}
.supporter__caption b { color: var(--primary); font-weight: 600; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em;
  background: var(--surface-container);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ── legal pages (privacy / terms) ───────────────────────── */
.legal {
  max-width: 880px;
  margin: 0 auto;
  padding: 56px var(--margin) var(--section-gap);
}
.legal__doc {
  background: var(--surface-container-lowest);
  border: 1px solid rgba(138,113,109,.10);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 56px clamp(28px, 5vw, 64px);
}
.legal__doc h1 {
  margin: 8px 0 14px;
  font-size: clamp(2.2rem, 4vw, 3rem);
}
.legal__doc h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.45rem;
  letter-spacing: -0.005em;
  color: var(--primary);
  margin: 44px 0 10px;
}
.legal__doc h2:first-of-type { margin-top: 36px; }
.legal__doc p {
  margin: 0 0 1em;
  color: var(--on-surface);
  line-height: 1.7;
  font-size: 1.02rem;
}
.legal__doc .lede {
  color: var(--on-surface);
  margin-bottom: 28px;
  max-width: none;
}
.legal__doc strong { font-weight: 600; color: var(--on-surface); }
.legal__doc em { color: inherit; font-style: italic; }
.legal__doc a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(108,20,7,.35);
  text-underline-offset: 3px;
}
.legal__doc a:hover { text-decoration-color: var(--primary); }
.legal__doc ul {
  margin: 0 0 1.2em;
  padding-left: 1.2em;
  list-style: disc;
  color: var(--on-surface);
}
.legal__doc ul li {
  margin: 0 0 .55em;
  line-height: 1.65;
  font-size: 1rem;
}
.legal__doc ul li::marker { color: var(--primary); }
.legal__meta {
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin: 0 0 32px !important;
}
.legal__back {
  margin: 48px 0 0 !important;
  padding-top: 24px;
  border-top: 1px solid var(--outline-variant);
  font-size: .92rem;
}
.site-foot__meta a {
  color: var(--on-surface-variant);
  text-decoration: underline;
  text-decoration-color: rgba(138,113,109,.4);
  text-underline-offset: 2px;
}
.site-foot__meta a:hover { color: var(--primary); }
@media (max-width: 720px) {
  .legal__doc { padding: 36px 22px; }
  .legal__doc h2 { font-size: 1.25rem; margin-top: 36px; }
}

/* ── philosophy ──────────────────────────────────────────── */
.philosophy {
  border-top: 1px solid var(--outline-variant);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}
.philosophy__copy { max-width: 620px; }
.philosophy__copy h2 { margin-bottom: 24px; }
.philosophy__copy .lede + .lede { margin-top: 18px; }

.palette {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(138,113,109,.08);
}
.palette__row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.swatch {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  aspect-ratio: 5 / 3;
  padding: 14px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--c);
  font-size: .82rem;
}
.swatch b {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  display: block;
  line-height: 1.1;
}
.swatch i {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: .68rem;
  letter-spacing: .1em;
  opacity: .8;
}

/* ── cta ─────────────────────────────────────────────────── */
.cta {
  text-align: center;
  border-top: 1px solid var(--outline-variant);
}
.cta .display {
  font-family: var(--font-display);
  color: var(--primary);
  margin-bottom: 24px;
  line-height: 1.1;
}
.cta .lede { margin: 0 auto 32px; }
.cta__row {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.download-cta img {
  width: 160px;
}
/* ── footer ──────────────────────────────────────────────── */
.site-foot {
  border-top: 1px solid var(--outline-variant);
  padding: 36px var(--margin);
  max-width: var(--container);
  margin: 0 auto;
}
.site-foot__row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}
.site-foot__brand {
  margin: 0;
  font-family: var(--font-display);
  color: var(--primary);
  font-size: 1.05rem;
}
.site-foot__brand span {
  font-size: .75rem;
  letter-spacing: .2em;
  color: var(--on-surface-variant);
  margin-right: 10px;
}
.site-foot__meta {
  margin: 0;
  font-size: .82rem;
  color: var(--on-surface-variant);
  letter-spacing: .03em;
}

/* ── responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --section-gap: 80px; }
  .hero { grid-template-columns: 1fr; gap: 40px; }
  .hero__art { min-height: 460px; }
  .phone--menu { width: 220px; right: 28%; }
  .phone--game { width: 250px; right: 6%; }
  .concept__demo { grid-template-columns: 1fr; padding: 36px; }
  .demo-side { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 24px 32px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy { grid-template-columns: 1fr; gap: 40px; }
  .gc__grid { grid-template-columns: repeat(2, 1fr); }
  .gc-card--play { grid-column: span 2; }
  .supporter { grid-template-columns: 1fr; gap: 48px; }
  .supporter__win { order: -1; }
}
@media (max-width: 720px) {
  :root { --margin: 22px; --section-gap: 64px; }
  .site-nav { padding-top: 18px; flex-wrap: wrap; }
  .site-nav__links { gap: 18px; flex-wrap: wrap; }
  .site-nav__links a:not(.nav-cta):not([href="#download"]) { display: none; }
  .hero__art { min-height: 420px; }
  .phone--menu { width: 180px; right: 36%; top: 10px; }
  .phone--game { width: 210px; right: 2%; top: 70px; }
  .feature-grid { grid-template-columns: 1fr; }
  .screens__row { flex-direction: column; align-items: center; gap: 80px; }
  .screens__row--quad .phone--lg { width: 240px; flex-basis: 240px; }
  .phone--lg { width: 260px; flex-basis: 260px; }
  .demo-mini { width: 130px; height: 130px; }
  .palette__row { grid-template-columns: 1fr 1fr; }
  .cta .display { font-size: clamp(2.2rem, 9vw, 3rem); }
  .gc__grid { grid-template-columns: 1fr; }
  .gc-card--play { grid-column: span 1; }
}
@media (max-width: 420px) {
  .brand-text__sub { display: none; }
  .phone--menu { width: 150px; right: 38%; }
  .phone--game { width: 175px; right: 0%; }
  .eyebrow { width: 210px; display: block; }
  .download-cta { text-align: center; }
  .download-cta a { display: inline-block; }
  .screens__row {
    flex-direction: row;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    width: 100%;
    gap: 12px;
  }
  .screens__row figure {
    flex: 0 0 85% !important;
    scroll-snap-align: center;
    overflow: visible;
  }
  .screens__row img {
    display: block;
    width: 100%;
    height: auto;
  }
}

/* Respect users that prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}