/* Hallmark · genre: playful · macrostructure: Map / Diagram · H4 stat hero knobs: number=tabular display, qualifier=below, secondary=one line · nav: N1 (wordmark + tab links — N7 slab dropped: fights Plume's rounded surfaces) · footer: Ft5 Statement, 28ch · theme: Plume, coral accent variant · enrichment: Tier B hand-built SVG (quest path + organ map) · tone: playful · anchor hue: 70 */
/* Hallmark · pre-emit critique: P4 H4 E4 S4 R4 V4 · contrast: pass (46–50) · nav: N1 as tab strip (app chrome, no CTA) · footer: Ft5 · slop: pass (51–55) · honest: pass (56) · chrome: pass (57) · tokens: pass (58) · responsive: pass (59) · icons: pass (60) · mobile: pass (36, 59, 61–69) — verified 320 / 375 / 768 on 2026-09-26 */

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; color-scheme: light; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  padding-inline: max(0px, env(safe-area-inset-left)) max(0px, env(safe-area-inset-right));
}
img, svg { max-width: 100%; height: auto; display: block; }
h1, h2, h3, p, ul, ol, dl, figure, pre { margin: 0; }
a { color: inherit; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
[hidden] { display: none !important; }
/* single-column grids must not grow to their content's min-content (long code lines) — gate 61 */
.mission, .mission__head, .block, .repl, .repl__row, .py, .aside, .aside > div, .organ-card, .organs, .grid-2, .section,
.slide, .slide__body, .hero-stat, .head-hang, .notice, .callout, .checks, .rules { grid-template-columns: minmax(0, 1fr); }
.mission__main, .slide__fig, .sheet-wrap, .code { min-width: 0; }
.tnum { font-variant-numeric: tabular-nums lining-nums; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.i { width: 1em; height: 1em; display: inline-block; vertical-align: -0.15em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.link { text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
.muted { color: var(--color-muted); }

/* ─── header · N1 wordmark + tab links ─────────────────────────── */
.top {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: var(--space-sm) var(--space-lg);
  padding: var(--space-sm) var(--page-gutter);
  border-bottom: var(--rule-fine) solid var(--color-rule);
}
.mark { font-family: var(--font-display); font-weight: 800; font-size: var(--text-md); letter-spacing: -0.01em; text-decoration: none; white-space: nowrap; min-height: 44px; display: inline-flex; align-items: center; }
.mark b { color: var(--color-accent); font-weight: inherit; }
.tabs { display: flex; gap: var(--space-2xs); margin-inline-start: auto; overflow-x: auto; max-width: 100%; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  white-space: nowrap; padding: var(--space-xs) var(--space-sm); min-height: 44px;
  display: inline-flex; align-items: center; text-decoration: none; font-weight: 600; font-size: var(--text-sm);
  color: var(--color-neutral); border-radius: var(--radius-pill); position: relative;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
.tab[aria-current="page"] { color: var(--color-ink); }
.tab[aria-current="page"]::after { content: ""; position: absolute; left: var(--space-sm); right: var(--space-sm); bottom: 5px; height: 2px; background: var(--color-accent); border-radius: 1px; }
@media (hover: hover) { .tab:hover { color: var(--color-ink); background: var(--color-paper-2); } }
.tab:active { transform: translateY(1px); }
.chip {
  font-family: var(--font-label); font-size: var(--text-sm); letter-spacing: var(--tracking-label);
  text-decoration: none; padding: var(--space-xs) var(--space-sm); min-height: 36px; display: inline-flex; align-items: center;
  border: var(--rule-hair) solid var(--color-rule-2); border-radius: var(--radius-pill); white-space: nowrap;
}
@media (max-width: 40rem) { .tabs { order: 3; flex-basis: 100%; margin-inline-start: 0; flex-wrap: wrap; overflow: visible; } .chip { margin-inline-start: auto; } }

/* ─── views ────────────────────────────────────────────────────── */
.view { max-width: var(--page-max); margin-inline: auto; padding: var(--space-lg) var(--page-gutter) var(--space-2xl); animation: view-in var(--dur-short) var(--ease-out); }
.view[hidden] { display: none; }
@keyframes view-in { from { opacity: 0; } to { opacity: 1; } }
.head-hang { padding-block: var(--space-md) var(--space-lg); display: grid; gap: var(--space-xs); }
.head-hang h1, .head-hang h2 { font-family: var(--font-display); font-weight: 800; letter-spacing: var(--tracking-display); line-height: var(--lh-tight); overflow-wrap: anywhere; min-width: 0; }
.head-hang h1 { font-size: var(--text-display-s); }
.head-hang p { color: var(--color-neutral); max-width: var(--measure); font-size: var(--text-md); }

/* ─── hero · H4 stat-led (the number is real: missions done) ───── */
.hero-stat { display: grid; gap: var(--space-sm); padding-block: var(--space-md) var(--space-xl); max-width: var(--measure); }
.hero-stat__figure { font-family: var(--font-display); font-weight: 800; font-size: clamp(5rem, 16vw, 11rem); line-height: 0.85; letter-spacing: -0.04em; font-variant-numeric: tabular-nums lining-nums; }
.hero-stat__of { font-size: 0.32em; color: var(--color-muted); margin-inline-start: 0.2em; letter-spacing: -0.02em; font-weight: 500; }
.hero-stat__q { color: var(--color-neutral); font-size: var(--text-md); }
.hero-stat__cta { margin-block-start: var(--space-xs); }

/* ─── buttons · C1 outlined chip (pill: playful) ───────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.45em; min-height: 44px; padding: var(--space-xs) var(--space-md);
  border: var(--rule-fine) solid var(--color-ink); border-radius: var(--radius-pill);
  font-weight: 600; font-size: var(--text-sm); text-decoration: none; white-space: nowrap;
  background: var(--color-paper); color: var(--color-ink);
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform 100ms var(--ease-out);
}
@media (hover: hover) { .btn:hover { background: var(--color-ink); color: var(--color-paper); } }
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn--fill { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
@media (hover: hover) { .btn--fill:hover { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-paper); } }
.btn--quiet { border-color: var(--color-rule-2); color: var(--color-neutral); }
.btn[data-state="done"] { background: var(--color-paper-3); border-color: var(--color-rule-2); color: var(--color-neutral); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: center; }

/* ─── quest map · Map / Diagram ────────────────────────────────── */
.map { position: relative; margin-block: var(--space-lg) var(--space-2xl); }
.map__svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.map__svg path { fill: none; stroke: var(--color-rule-2); stroke-width: 3; stroke-dasharray: 2 9; stroke-linecap: round; }
.map__svg path.is-done { stroke: var(--color-accent); stroke-dasharray: none; }
.map__nodes { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); position: relative; }
@media (min-width: 40rem) { .map__nodes { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2xl) var(--space-lg); } }
.node { display: flex; justify-content: center; }
.node__btn {
  display: grid; justify-items: center; gap: var(--space-xs); width: min(100%, 14rem); padding: var(--space-sm);
  border-radius: var(--radius-card); text-align: center;
  transition: transform var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.node__dot {
  width: 4rem; height: 4rem; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); font-variant-numeric: lining-nums;
  background: var(--color-paper); border: 2px solid var(--color-rule-2); color: var(--color-neutral); position: relative; z-index: var(--z-base);
}
.node--boss .node__dot { border-radius: 1.1rem; width: 4.5rem; height: 4.5rem; }
.node__title { font-weight: 600; line-height: 1.25; }
.node__meta { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); color: var(--color-muted); text-transform: uppercase; }
.node.is-done .node__dot { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
.node.is-open .node__dot { border-color: var(--color-ink); color: var(--color-ink); outline: 2px solid var(--color-ink); outline-offset: 4px; }
.node.is-locked .node__btn { color: var(--color-muted); }
.node.is-locked .node__dot { border-style: dashed; background: transparent; }
@media (hover: hover) { .node__btn:hover { transform: translateY(-2px); background: var(--color-paper-2); } }
.node__btn:active { transform: translateY(0); }

/* ─── mission page ─────────────────────────────────────────────── */
.mission { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 60rem) { .mission { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); } }
.mission__head { grid-column: 1 / -1; display: grid; gap: var(--space-xs); padding-block-end: var(--space-lg); border-bottom: var(--rule-fine) solid var(--color-rule); }
.mission__num { font-family: var(--font-label); font-size: var(--text-sm); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); }
.mission__title { font-family: var(--font-display); font-weight: 800; font-size: var(--text-display-s); line-height: var(--lh-tight); letter-spacing: var(--tracking-display); overflow-wrap: anywhere; min-width: 0; }
.mission__legend { font-size: var(--text-md); max-width: var(--measure); color: var(--color-ink-2); }
.block { display: grid; gap: var(--space-sm); padding-block: var(--space-lg); }
.block + .block { border-top: var(--rule-hair) solid var(--color-rule); }
.block h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); letter-spacing: -0.015em; }
.block p, .block li { max-width: var(--measure); }
.block ol, .block ul { padding-inline-start: 1.25em; display: grid; gap: var(--space-2xs); }
.repl { display: grid; gap: var(--space-sm); }
.repl__row { display: grid; gap: var(--space-2xs); }
.repl__note { font-size: var(--text-sm); color: var(--color-neutral); max-width: var(--measure); }
.code {
  position: relative; background: var(--color-paper-2); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-input); margin: 0;
}
.code pre {
  font-family: var(--font-mono); font-size: var(--text-sm); line-height: 1.65; tab-size: 4;
  padding: var(--space-sm) var(--space-md); padding-inline-end: 7rem; overflow-x: auto; white-space: pre; margin: 0;
}
.organ-card .code { background: var(--color-paper); }
.copy {
  position: absolute; top: var(--space-xs); right: var(--space-xs);
  font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-muted); background: var(--color-paper); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-input);
  padding: var(--space-2xs) var(--space-xs); min-height: 36px; transition: color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
@media (pointer: coarse) { .copy { min-height: 44px; } }
@media (max-width: 40rem) {
  .code { display: grid; grid-template-columns: minmax(0, 1fr); }
  .code pre { padding-inline-end: var(--space-md); }
  .copy { position: static; justify-self: end; margin: 0 var(--space-xs) var(--space-xs); }
}
@media (hover: hover) { .copy:hover { color: var(--color-ink); border-color: var(--color-rule-2); } }
.copy:active { transform: translateY(1px); }
.copy[data-state="copied"] { color: var(--color-accent); border-color: var(--color-accent); }
.copy[data-state="error"] { color: var(--color-neutral); border-color: var(--color-neutral); }
.copy__done, .copy__err { display: none; }
.copy[data-state="copied"] .copy__done, .copy[data-state="error"] .copy__err { display: inline; }
.copy[data-state="copied"] .copy__label, .copy[data-state="error"] .copy__label { display: none; }
.file { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); color: var(--color-muted); }
.checks { list-style: none; padding: 0; display: grid; gap: var(--space-2xs); }
.check { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--space-sm); align-items: start; padding: var(--space-xs) 0; min-height: 44px; cursor: pointer; }
.check input { width: 1.35rem; height: 1.35rem; margin: 0.15rem 0 0; accent-color: var(--color-accent); cursor: pointer; }
.check input:checked + span { color: var(--color-muted); text-decoration: line-through; text-decoration-color: var(--color-rule-2); }
.callout { padding: var(--space-md) var(--space-lg); background: var(--color-paper-2); border-radius: var(--radius-card); display: grid; gap: var(--space-2xs); max-width: var(--measure); }
.callout__k { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); }
.py { display: grid; gap: var(--space-sm); }
.py dt { font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 600; }
.py dd { margin: 0; color: var(--color-ink-2); max-width: var(--measure); }
.aside { display: grid; gap: var(--space-lg); padding: var(--space-lg); background: var(--color-paper-2); border-radius: var(--radius-card); }
@media (min-width: 60rem) { .aside { position: sticky; top: var(--space-md); } }
.aside h2 { font-size: var(--text-xs); font-family: var(--font-label); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); font-weight: 400; }
.aside ul { padding-inline-start: 1.1em; display: grid; gap: var(--space-2xs); margin: 0; }
.aside > div { display: grid; gap: var(--space-xs); }
.notice { padding: var(--space-md) var(--space-lg); border: var(--rule-fine) dashed var(--color-rule-2); border-radius: var(--radius-card); color: var(--color-neutral); display: grid; gap: var(--space-xs); max-width: var(--measure); }

/* ─── assembly slides · F4 step sequence, one step per screen ──── */
.slide { display: grid; gap: var(--space-lg); }
@media (min-width: 60rem) { .slide { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: var(--space-2xl); align-items: start; } }
.slide__fig { border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-card); overflow: hidden; background: var(--color-paper); display: grid; gap: var(--space-xs); }
.slide__fig img { width: 100%; height: auto; }
.slide__fig figcaption { font-size: var(--text-sm); color: var(--color-muted); padding: 0 var(--space-md) var(--space-sm); }
.slide__body { display: grid; gap: var(--space-md); align-content: start; }
.slide__count { font-family: var(--font-label); font-size: var(--text-sm); letter-spacing: var(--tracking-label); color: var(--color-muted); }
.slide__title { font-family: var(--font-display); font-weight: 800; font-size: var(--text-display-s); line-height: var(--lh-tight); letter-spacing: var(--tracking-display); overflow-wrap: anywhere; min-width: 0; }
.slide__body h3 { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); font-weight: 400; margin-block-start: var(--space-xs); }
.slide__body p, .slide__body li { max-width: var(--measure); }
.slide__body ul { padding-inline-start: 1.25em; display: grid; gap: var(--space-2xs); }
.slide__nav { grid-column: 1 / -1; display: flex; gap: var(--space-sm); align-items: center; flex-wrap: wrap; padding-block-start: var(--space-lg); border-top: var(--rule-hair) solid var(--color-rule); }
.dots { display: flex; gap: 2px; margin-inline-start: auto; flex-wrap: wrap; }
.dots button { width: 32px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-input); }
.dots button::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--color-rule-2); transition: background-color var(--dur-short) var(--ease-out); }
.dots button[aria-current="step"]::before { background: var(--color-accent); }
@media (hover: hover) { .dots button:hover::before { background: var(--color-ink); } }

/* ─── organs · hand-built SVG map + detail card ────────────────── */
.organs { display: grid; gap: var(--space-xl); }
@media (min-width: 60rem) { .organs { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; } }
.organs__svg { width: 100%; max-width: 24rem; margin-inline: auto; }
.body-shell { fill: var(--color-paper-3); stroke: var(--color-neutral); stroke-width: 1.5; }
.organ { cursor: pointer; fill: var(--color-paper); stroke: var(--color-neutral); stroke-width: 1.5; transition: fill var(--dur-short) var(--ease-out); }
.organ--under { stroke-dasharray: 4 3; }
@media (hover: hover) { .organ:hover { fill: var(--color-accent-soft); } }
.organ.is-active { fill: var(--color-accent); stroke: var(--color-accent); }
.organ:focus-visible { outline: none; stroke: var(--color-focus); stroke-width: 3; }
.legend { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
.legend button { padding: var(--space-2xs) var(--space-sm); min-height: 40px; border: var(--rule-hair) solid var(--color-rule-2); border-radius: var(--radius-pill); font-size: var(--text-sm); white-space: nowrap; transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out); }
@media (hover: hover) { .legend button:hover { background: var(--color-paper-2); } }
.legend button:active { transform: translateY(1px); }
.legend button[aria-pressed="true"] { background: var(--color-ink); color: var(--color-paper); border-color: var(--color-ink); }
.organ-card { display: grid; gap: var(--space-sm); padding: var(--space-lg); background: var(--color-paper-2); border-radius: var(--radius-card); align-content: start; }
.organ-card h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); letter-spacing: -0.02em; line-height: var(--lh-snug); }
.organ-card .k { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); margin-block-start: var(--space-xs); }
.organ-card p { max-width: var(--measure); }

/* ─── cheat sheet ──────────────────────────────────────────────── */
.grid-2 { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 60rem) { .grid-2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.sheet-wrap { overflow-x: auto; }
.sheet { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.sheet th, .sheet td { text-align: left; padding: var(--space-xs) var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule); vertical-align: top; }
.sheet th { font-family: var(--font-label); font-size: var(--text-xs); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-muted); font-weight: 400; }
.sheet td:first-child { color: var(--color-neutral); }
.sheet code, .inline-code { font-family: var(--font-mono); font-size: 0.95em; background: var(--color-paper-2); padding: 0.1em 0.35em; border-radius: 4px; white-space: nowrap; }
.rules { display: grid; gap: var(--space-sm); }
.rules li { list-style: none; padding: var(--space-md) var(--space-lg); background: var(--color-paper-2); border-radius: var(--radius-card); max-width: var(--measure); }
.rules ul { padding: 0; }
.section { display: grid; gap: var(--space-md); padding-block: var(--space-lg); }
.section + .section { border-top: var(--rule-hair) solid var(--color-rule); }
.section h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); letter-spacing: -0.015em; }

/* ─── footer · Ft5 statement ───────────────────────────────────── */
.foot-stmt { max-width: var(--page-max); margin-inline: auto; padding: var(--space-2xl) var(--page-gutter) var(--space-xl); display: grid; gap: var(--space-lg); }
.foot-stmt__line { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 4vw, 2.75rem); line-height: 1.05; letter-spacing: -0.02em; max-width: 28ch; overflow-wrap: anywhere; min-width: 0; }
.foot-stmt__meta { display: flex; justify-content: space-between; align-items: center; gap: var(--space-md); flex-wrap: wrap; padding-block-start: var(--space-sm); border-top: var(--rule-hair) solid var(--color-rule); color: var(--color-muted); font-size: var(--text-sm); }
.foot-stmt__meta button { min-height: 44px; }

/* ─── motion discipline ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 150ms !important; transition-duration: 150ms !important; }
  .node__btn:hover { transform: none; }
}