/* Whiteboard type: Caveat for headings and figures, Nunito Sans for reading. */

:root {
  --paper: #f6f4ee;
  --paper-raised: #fbf9f4;
  --paper-inset: #eeeae0;
  --grid-line: rgba(27, 26, 23, 0.055);
  --ink: #1b1a17;
  --ink-soft: #3f3c35;
  --ink-faint: #6f6a5f;
  --line: #bdb7a8;
  --line-strong: #bdb7a8;
  --marker: #1b1a17;
  --marker-strong: #1b1a17;
  --red: #c2410c;
  --spot: #c2410c;
  --sticky: #fff1a1;
  --sticky-ink: #4a3d05;

  --font-display: 'Caveat', 'Bradley Hand', 'Segoe Print', cursive;
  --font-sans: 'Nunito Sans', system-ui, sans-serif;
  --font-hand: 'Caveat', 'Bradley Hand', 'Segoe Print', cursive;
  --font-label: var(--font-sans);
  --font-code: ui-monospace, 'SF Mono', Menlo, monospace;

  --text-m: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-md: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: clamp(1.8rem, 1.3rem + 1.6vw, 2.5rem);
  --text-3xl: clamp(2rem, 1.4rem + 2.2vw, 3rem);
  --text-hero: clamp(2.4rem, 0.8rem + 4.2vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem; --space-16: 4rem; --space-24: 6rem;
  --space-section: clamp(4rem, 2.5rem + 3.5vw, 7rem);

  --measure: 58ch;
  --measure-narrow: 38ch;
  --duration-fast: 150ms; --duration-normal: 320ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1060px;
  --gutter: 2rem;

  --diagram-canvas: var(--paper);
  --diagram-ink: var(--ink);
  --diagram-muted: var(--ink-faint);
  --diagram-line: var(--line);
  --diagram-accent: var(--spot);
  --diagram-accent-soft: color-mix(in srgb, var(--spot) 18%, var(--paper));
  --diagram-stroke: 1.5px;
  --diagram-radius: 10px;
  --diagram-ease: cubic-bezier(.22, .61, .36, 1);
}

:root[data-theme="dark"] {
  --paper: #15171a; --paper-raised: #1c1f23; --paper-inset: #111316; --grid-line: rgba(240, 236, 226, 0.06);
  --ink: #ece8de; --ink-soft: #c4bfb2; --ink-faint: #8c877b;
  --line: #3a3f47; --line-strong: #3a3f47;
  --marker: #ece8de; --marker-strong: #ece8de; --red: #f0916b; --spot: #e8763f;
  --sticky: #e9d768; --sticky-ink: #2a2405;
  --diagram-accent-soft: color-mix(in srgb, var(--spot) 26%, var(--paper));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #15171a; --paper-raised: #1c1f23; --paper-inset: #111316; --grid-line: rgba(240, 236, 226, 0.06);
    --ink: #ece8de; --ink-soft: #c4bfb2; --ink-faint: #8c877b;
    --line: #3a3f47; --line-strong: #3a3f47;
    --marker: #ece8de; --marker-strong: #ece8de; --red: #f0916b; --spot: #e8763f;
    --sticky: #e9d768; --sticky-ink: #2a2405;
    --diagram-accent-soft: color-mix(in srgb, var(--spot) 26%, var(--paper));
  }
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
body {
  margin: 0;
  background-color: var(--paper);
  /* the gridboard: 32px hairline grid on the paper, restored from 1b64079 */
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-variation-settings: normal;
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; text-decoration-color: var(--line-strong); text-decoration-skip-ink: all; }
a:hover { text-decoration-color: var(--ink); }
a:hover { color: var(--marker); }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 400; letter-spacing: 0; line-height: 1.05; font-variation-settings: normal; }
h2 { font-size: var(--text-3xl); letter-spacing: 0; max-width: 16ch; }
h2.rh { display: flex; align-items: baseline; column-gap: var(--space-4); font-family: var(--font-label); font-size: var(--text-m); font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase; font-variation-settings: normal; line-height: 1; max-width: none; color: var(--ink-faint); grid-column: 1 / -1; }
/* Margin numeral: the section number is the display element, the label is its caption. Above 1300px the numeral hangs in the left margin so the caption stays flush with the text column. */
h2.rh::before { content: counter(sec, decimal-leading-zero); font-family: var(--font-display); font-size: clamp(3rem, 1.8rem + 3vw, 4.75rem); font-weight: 400; letter-spacing: 0; line-height: 0.8; color: var(--ink); font-variation-settings: normal; font-variant-numeric: tabular-nums lining-nums; flex: 0 0 auto; }
@media (min-width: 1300px) { h2.rh::before { width: 1.15em; margin-left: calc(-1.15em - var(--space-4)); } }
section.numbered-head { counter-increment: sec; }
body { counter-reset: sec; }
h3, h4 { font-size: var(--text-lg); font-weight: 500; letter-spacing: -0.01em; line-height: 1.25; font-variation-settings: normal; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }
button { font-family: inherit; cursor: pointer; }
strong { font-weight: 600; }
em { font-style: italic; }
figure { margin: 0; }
sup { line-height: 0; }

.container { max-width: var(--max-width); margin-inline: auto; padding-inline: var(--space-8); }
@media (max-width: 640px) { .container { padding-inline: var(--space-4); } }

.mono { font-family: var(--font-code); }
.hand { font-family: var(--font-hand); }
.accent { color: var(--marker); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* the one metadata style */
.m, .eyebrow, .stat-source, .footer-meta, .board-caption, .board-tab, .card .tag, .card .meta, .era .when, .receipt-block, .note, .testimonial-attr {
  font-family: var(--font-label); font-size: var(--text-m); line-height: 1.6; color: var(--ink-faint); letter-spacing: 0; font-variation-settings: normal;
}
.m b, .m strong { color: var(--ink); font-weight: 500; }
.m { color: var(--ink-soft); }
.m a { color: var(--ink); }
.eyebrow { text-transform: uppercase; letter-spacing: 0.06em; }

/* the highlight is the link rule, at display size */
.mark { text-decoration: none; font-style: italic; }

/* ---------- the grid ---------- */
.row { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-4); align-items: start; }
.row > .main { grid-column: 1 / span 8; min-width: 0; }
.row > .rail { grid-column: 10 / span 3; min-width: 0; }
@media (max-width: 800px) { .row > .main, .row > .rail { grid-column: 1 / -1; } }
.main > p, .main p, .col > p { max-width: var(--measure); }

/* rules: one colour, one weight */
hr, .rule-line { border: 0; height: 1px; background: var(--line); }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: var(--paper); }
.nav .container { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: var(--space-4); border-bottom: 1px solid var(--line); padding-inline: 0; width: calc(100% - 2 * var(--space-8)); }
@media (max-width: 640px) { .nav .container { width: calc(100% - 2 * var(--space-4)); } }
.nav-logo { font-family: var(--font-display); font-weight: 500; font-size: 1.2rem; text-decoration: none; letter-spacing: -0.01em; white-space: nowrap; font-variation-settings: normal; }
.nav-logo span { color: inherit; }
.nav-logo:hover { color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a { text-decoration: none; font-size: var(--text-sm); color: var(--ink); font-variation-settings: normal; }
.nav-links a:hover { color: var(--marker); }
.nav-links a[aria-current="page"] { text-decoration: underline; text-underline-offset: 0.35em; text-decoration-color: var(--marker); }
.nav-links a.nav-cta { color: var(--spot); text-decoration: underline; text-underline-offset: 0.35em; text-decoration-color: var(--spot); }
.nav-right { display: flex; align-items: center; gap: var(--space-4); }
.theme-toggle, .nav-toggle { border: 0; background: transparent; color: var(--ink); font-size: var(--text-sm); font-family: var(--font-sans); font-variation-settings: normal; padding: 0; display: inline-flex; align-items: center; }
.nav .theme-toggle { min-height: 44px; padding-inline: var(--space-3); border: 1px solid var(--line); border-radius: 6px; white-space: nowrap; }
.theme-toggle:focus-visible { outline: 2px solid var(--spot); outline-offset: 3px; }
.footer .theme-toggle { font-family: var(--font-sans); font-variation-settings: normal; font-size: var(--text-sm); color: var(--ink-faint); text-decoration: underline; text-underline-offset: 0.2em; }
.footer .colophon { font-family: var(--font-sans); font-variation-settings: normal; font-size: var(--text-sm); color: var(--ink-soft); }
.footer h2 { margin-bottom: 0; }
.footer-text { gap: var(--space-4); }
.theme-toggle:hover, .nav-toggle:hover { color: var(--marker); }
.theme-toggle svg, .nav-toggle svg { display: none; }
.nav-toggle { display: none; }
.nav-toggle::after { content: 'Menu'; }
@media (max-width: 1100px) {
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: var(--space-2) var(--space-6) var(--space-4); }
  .nav-links.is-open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: var(--space-3) 0; font-size: var(--text-base); }
}

/* ---------- buttons and links ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 0.7rem 1.1rem; border-radius: 0;
  font-size: var(--text-sm); font-variation-settings: normal; text-decoration: none; line-height: 1;
  border: 1px solid var(--ink); background: transparent; color: var(--ink);
  transition: background var(--duration-fast), color var(--duration-fast), border-color var(--duration-fast);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-primary, .btn-secondary { background: transparent; color: var(--ink); }
.btn-link { border: 0; padding: 0; background: transparent; color: var(--ink); text-decoration: underline; }
.textlink { font-size: var(--text-sm); font-variation-settings: normal; color: var(--ink); text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; text-decoration-color: var(--marker); }
.textlink.strong { font-weight: 600; }
.textlink:hover { color: var(--marker); }
.quiet { font-size: var(--text-sm); color: var(--ink-faint); }
.cta-row { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-4); align-items: center; }

/* ---------- hero ---------- */
.hero { --hero-top: clamp(2rem, 1.5rem + 2.5vw, 4rem); padding-block: var(--hero-top) var(--space-section); }
.hero-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-10); align-items: start; }
.hero-grid h1 { grid-column: 1 / span 8; grid-row: 1; align-self: end; }
.hero-grid .hero-copy { grid-column: 1 / span 7; grid-row: 2; margin-top: 0; }
.hero-grid .bleed { grid-column: 9 / span 4; grid-row: 1 / span 2; align-self: start; aspect-ratio: 2 / 3; }
@media (max-width: 800px) { .hero-grid h1, .hero-grid .hero-copy, .hero-grid .bleed { grid-column: 1 / -1; grid-row: auto; } .hero .bleed { margin-right: 0; } .portrait { aspect-ratio: 4 / 5; height: auto; } }
.hero h1 { font-family: var(--font-hand); font-size: clamp(3rem, 1.5rem + 4vw, 5.2rem); max-width: 18ch; letter-spacing: 0; line-height: 1.08; font-weight: 600; font-variation-settings: normal; }
.hero h1 .mark { font-style: normal; text-decoration: underline; text-decoration-color: var(--spot); text-decoration-thickness: 0.045em; text-underline-offset: 0.1em; }
.hero .bleed { margin-right: 0; margin-top: calc(-1 * var(--hero-top)); position: relative; }
.hero .bleed { overflow: hidden; }
.portrait { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 0; display: block; }
:root[data-theme="dark"] .portrait { filter: brightness(0.94); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .portrait { filter: brightness(0.94); } }
@media (max-width: 800px) { .portrait { position: static; } }
/* risograph treatment: the canvas replaces the image once the shader is live */
.riso-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.riso-on > img { visibility: hidden; }
@media (max-width: 800px) { .hero .bleed { aspect-ratio: 4 / 5; margin-top: 0; margin-right: 0; } .hero .bleed.riso-on { position: relative; } .riso-on > .portrait { position: absolute; } }
.hero-copy .m { max-width: 50ch; }
.hero-copy { display: flex; flex-direction: column; gap: var(--space-6); margin-top: var(--space-6); }
.hero-sub { font-size: var(--text-lg); color: var(--ink-soft); max-width: 44ch; line-height: 1.5; }
.home .hero { padding-bottom: var(--space-8); }
.home section { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.home #proof { padding-top: var(--space-6); padding-bottom: 0; }
.home #testimonials { padding-block: var(--space-10); }
.home #now { padding-top: var(--space-8); padding-bottom: var(--space-12); }

.proof { padding-block: var(--space-12); border-top: 1px solid var(--line); }
.proof:first-child { border-top: 0; padding-top: var(--space-8); }
.proof-copy { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: var(--gutter); row-gap: var(--space-3); align-items: end; margin-bottom: var(--space-6); }
.proof-copy .board-tab { grid-column: 1 / -1; margin-bottom: 0; }
.proof-stat { font-family: var(--font-display); font-size: clamp(3.2rem, 1.6rem + 4vw, 5.4rem); font-weight: 600; line-height: 0.85; letter-spacing: 0; color: var(--ink); }
.proof-stat sup { font-size: 0.4em; vertical-align: 0.7em; }
.proof-copy h2 { grid-column: 2; max-width: 16ch; font-size: clamp(1.8rem, 1.2rem + 1.6vw, 2.6rem); font-weight: 600; }
.proof-copy p:not(.board-tab) { grid-column: 2; max-width: 46ch; color: var(--ink-soft); }
.proof-copy .m { grid-column: 2; }
.proof .loop { margin-top: 0; border-top: 0; padding-top: 0; }
@media (max-width: 800px) {
  .proof-copy { grid-template-columns: 1fr; }
  .proof-stat, .proof-copy h2, .proof-copy p, .proof-copy .m { grid-column: 1; }
}

.now-line { font-family: var(--font-display); font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.2rem); font-weight: 600; line-height: 1.25; max-width: 28ch; margin-top: var(--space-3); }

.rules.compact { margin-top: var(--space-8); row-gap: var(--space-6); }
.rules.compact .rule p { font-size: var(--text-sm); }

.g { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); align-items: end; }
.c-label { grid-column: 1 / span 4; }
.c-main { grid-column: 5 / span 8; }
@media (max-width: 800px) { .c-label, .c-main { grid-column: 1 / -1; } }

/* the read: essay beside the printed plate */
.read-row .main { grid-column: 1 / span 6; grid-row: 1; }
.read-row .plate-fig { grid-column: 7 / span 6; grid-row: 1; align-self: start; margin-top: var(--space-10); }
@media (max-width: 800px) { .read-row .main, .read-row .plate-fig { grid-column: 1 / -1; grid-row: auto; } }

/* ---------- sections ---------- */
section { padding-block: 0 var(--space-section); }
section { padding-top: var(--space-section); }
.footer > .container::before { content: ''; display: block; height: 1px; background: var(--line); margin-bottom: var(--space-section); }
section .row + .row { margin-top: var(--space-6); }
.deck { font-size: clamp(1.4rem, 1.1rem + 1vw, 1.75rem); line-height: 1.3; letter-spacing: -0.015em; color: var(--ink); max-width: 32ch; margin-top: var(--space-6); font-variation-settings: normal; }
.fn { font-family: var(--font-sans); font-variation-settings: normal; font-size: var(--text-sm); line-height: 1.5; color: var(--ink-faint); }
.fn a { color: var(--ink); }
.main .deck + p { margin-top: var(--space-6); }
.main p + p { margin-top: var(--space-4); }
.main p { font-size: var(--text-base); line-height: 1.6; color: var(--ink-soft); }
.main .deck { color: var(--ink); }
.section-head { max-width: 44ch; margin-bottom: var(--space-12); display: flex; flex-direction: column; gap: var(--space-4); }
.section-head p { font-size: var(--text-md); color: var(--ink-soft); max-width: 58ch; }
section.tight { padding-block: 0 var(--space-16); }
.lede { font-size: var(--text-md); line-height: 1.6; color: var(--ink-soft); max-width: 58ch; margin-top: var(--space-6); }

/* prose (subpages) */
.prose { max-width: var(--measure); font-size: var(--text-md); color: var(--ink-soft); display: flex; flex-direction: column; gap: var(--space-4); line-height: 1.6; }
.prose strong { color: var(--ink); }
.prose h3 { color: var(--ink); margin-top: var(--space-4); }

/* ---------- the evidence figure: table + numbers ---------- */
.evidence { margin-top: var(--space-12); }
.ftable { width: 100%; border-collapse: collapse; border-top: 1px solid var(--line); }
.ftable th { text-align: left; font-family: var(--font-label); font-size: var(--text-m); font-weight: 400; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; padding: var(--space-4) var(--space-6) var(--space-4) 0; border-bottom: 1px solid var(--line); width: 33.33%; font-variation-settings: normal; }
.ftable th:nth-child(2) { color: var(--ink); }
.ftable td:nth-child(2) b { font-weight: 600; }
.ftable td:nth-child(2) span { color: var(--ink-soft); }
.ftable td { vertical-align: top; padding: var(--space-6) var(--space-6) var(--space-6) 0; border-bottom: 1px solid var(--line); }
.ftable td b { display: block; font-weight: 500; color: var(--ink); font-size: var(--text-base); font-variation-settings: normal; }
.ftable td span { display: block; font-size: var(--text-sm); color: var(--ink-faint); line-height: 1.45; }

.ledger { margin-top: var(--space-8); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-6) var(--gutter); padding-block: var(--space-6); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ledger > div { min-width: 0; }
.ledger .big { display: block; font-family: var(--font-display); font-size: clamp(2rem, 1.2rem + 2vw, 2.85rem); font-weight: 400; line-height: 1; letter-spacing: 0; color: var(--ink); font-variation-settings: normal; font-variant-numeric: tabular-nums; }
.ledger .big sup { font-size: 0.45em; vertical-align: baseline; position: relative; top: -0.55em; line-height: 0; }
.ledger .what { margin-top: var(--space-2); }
.ledger .what p { font-size: var(--text-sm); line-height: 1.4; color: var(--ink); max-width: none; font-variation-settings: normal; }
.ledger .what .m { display: block; margin-top: var(--space-1); }
@media (max-width: 800px) { .ledger { grid-template-columns: 1fr 1fr; } }
.stat-line { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-8); padding-top: var(--space-8); align-items: end; }
.stat-line .big { display: block; font-family: var(--font-display); font-size: clamp(3rem, 1.5rem + 4.5vw, 5.5rem); font-weight: 400; line-height: 0.9; letter-spacing: 0; color: var(--ink); font-variation-settings: normal; font-variant-numeric: tabular-nums; margin-bottom: var(--space-3); }
.stat-line .big sup { font-size: 0.4em; vertical-align: 0.9em; letter-spacing: 0; }
.stat-line .m { display: block; max-width: 22ch; }
@media (max-width: 800px) { .stat-line { grid-template-columns: 1fr 1fr; } }
.evidence > .row { margin-top: var(--space-4); }
.evidence figcaption.rail { grid-column: 4 / span 8; }
.evidence figcaption a { color: var(--ink); }

/* ---------- index of receipts ---------- */
.index { margin-top: var(--space-10); }
.index .entry { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); padding-block: var(--space-8); border-top: 1px solid var(--line); align-items: start; }
.index .entry { grid-template-rows: auto auto 1fr; }
.index .plate { grid-column: 1 / span 5; grid-row: 1 / span 3; }
.index .title { grid-column: 7 / span 6; grid-row: 1; }
.index .entry > p { grid-column: 7 / span 6; grid-row: 2; margin: 0; margin-top: var(--space-4); font-size: var(--text-base); color: var(--ink-soft); line-height: 1.6; }
.index .entry > .m { grid-column: 7 / span 6; grid-row: 3; margin-top: var(--space-3); }
@media (max-width: 800px) { .index .entry { grid-template-rows: auto; } .index .plate, .index .title, .index .entry > p, .index .entry > .m { grid-column: 1 / -1; grid-row: auto; } .index .plate { margin-bottom: var(--space-2); } }

/* ---------- plates: the printed illustrations ---------- */
/* no perspective on the wrapper: it would isolate the image and defeat the multiply blend against the page paper */
.plate { display: block; position: relative; text-decoration: none; --px: 0.5; --py: 0.5; --rx: 0deg; --ry: 0deg; }
.plate img, .plate video { width: 100%; height: auto; display: block; background: var(--paper); transform: perspective(1200px) rotateX(var(--rx)) rotateY(var(--ry)); transform-origin: center; transition: transform 500ms var(--ease-out); will-change: transform; mix-blend-mode: multiply; filter: brightness(1.05) contrast(1.02); }
.plate video { object-fit: cover; aspect-ratio: 1400 / 933; }
.plate-reversed > img { scale: -1 1; }
.plate video img { display: none; } /* fallback content only renders where <video> is unsupported */
.plate::after { content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity 400ms var(--ease-out); background: radial-gradient(60% 60% at calc(var(--px) * 100%) calc(var(--py) * 100%), rgba(255,255,255,0.28), rgba(255,255,255,0) 70%); mix-blend-mode: soft-light; }
.plate:hover::after { opacity: 1; }
:root[data-theme="dark"] .plate img, :root[data-theme="dark"] .plate video { mix-blend-mode: lighten; filter: invert(0.9) hue-rotate(180deg) saturate(1.3) contrast(1.25); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .plate img, :root:not([data-theme="light"]) .plate video { mix-blend-mode: lighten; filter: invert(0.9) hue-rotate(180deg) saturate(1.3) contrast(1.25); } }
.rule .main { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); column-gap: var(--space-4); }
.index .n, .rule .n { font-family: var(--font-display); font-size: var(--text-2xl); padding-top: 0.05em; font-weight: 400; line-height: 0.9; letter-spacing: 0; color: var(--ink); font-variation-settings: normal; font-variant-numeric: tabular-nums; }
.index .title { display: block; font-family: var(--font-display); font-size: var(--text-2xl); max-width: 14ch; text-wrap: balance; font-weight: 400; letter-spacing: -0.025em; line-height: 1.05; text-decoration: none; color: var(--ink); font-variation-settings: normal; }
.index .title:hover { text-decoration: underline; text-underline-offset: 0.12em; text-decoration-thickness: 1px; }
.index .main p { margin-top: var(--space-4); font-size: var(--text-base); max-width: 58ch; }
.index .rail, .rule .rail { padding-top: 0.45em; }

/* ---------- pull quote, at section scale ---------- */
.pullquote { margin: 0; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); }
.pullquote p { grid-column: 1 / span 9; font-size: clamp(1.4rem, 1.1rem + 1vw, 1.85rem); font-weight: 400; line-height: 1.25; letter-spacing: 0; color: var(--ink); font-variation-settings: normal; max-width: 34ch; text-indent: -0.42em; }
.pullquote footer { grid-column: 1 / span 8; }
@media (max-width: 800px) { .pullquote p, .pullquote footer { grid-column: 1 / -1; } }

.pullquote p::before { content: '\201C'; }
.pullquote p::after { content: '\201D'; }
.pullquote footer { padding-top: 0.5em; }
#testimonials { padding-block: calc(var(--space-section) * 0.5); }
.pullquote p { margin-left: -0.42em; text-indent: 0; }
.pullquote p::before { margin-right: 0.04em; }

/* ---------- rules ---------- */
.rules { margin-top: var(--space-10); display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-8); }
.rule { grid-column: span 6; max-width: 46ch; }
.rule:nth-child(odd) { grid-column: 1 / span 5; }
.rule:nth-child(even) { grid-column: 7 / span 5; }
.rule p { margin-top: var(--space-2); font-size: var(--text-base); color: var(--ink-soft); line-height: 1.55; }
.rule .fn.receipt { margin-top: var(--space-3); font-family: var(--font-label); font-size: 0.75rem; line-height: 1.6; color: var(--ink-faint); font-variation-settings: normal; }
.rule h3 { font-size: var(--text-xl); font-weight: 400; letter-spacing: 0; font-variation-settings: normal; }
@media (max-width: 800px) { .rule, .rule:nth-child(odd), .rule:nth-child(even) { grid-column: 1 / -1; } }

/* ---------- objections ---------- */
.qa { margin-top: var(--space-4); max-width: var(--measure); }
.qa dt { max-width: var(--measure-narrow); }
.qa dt { font-family: var(--font-display); font-size: var(--text-xl); font-style: italic; font-weight: 400; letter-spacing: -0.01em; line-height: 1.2; font-variation-settings: normal; margin-top: var(--space-6); padding-top: var(--space-6); border-top: 1px solid var(--line); }
.qa dt::before { content: '\201C'; }
.qa dt::after { content: '\201D'; }
.qa dd { font-size: var(--text-md); line-height: 1.6; color: var(--ink-soft); max-width: var(--measure); }


/* legacy whiteboard figures on subpages */
.board { position: relative; border-top: 1px solid var(--line); padding-top: var(--space-6); }
.board-tab { margin-bottom: var(--space-4); }
.board-tab.right { text-align: right; }
.board svg { width: 100%; height: auto; display: block; }
.board-caption { margin-top: var(--space-4); max-width: 64ch; }
.board-caption b { color: var(--ink); font-weight: 500; margin-right: var(--space-2); }
.wb-box { fill: var(--paper); stroke: var(--ink); stroke-width: 1; }
.wb-box.accent { stroke: var(--marker); stroke-width: 1; }
.wb-box.soft { fill: var(--paper); stroke: var(--line); stroke-width: 1; }
.wb-box.sticky { fill: var(--sticky); stroke: none; }
.wb-cap { font-family: var(--font-label); font-size: 11.5px; fill: var(--ink-faint); letter-spacing: 0.04em; text-transform: uppercase; }
.wb-title { font-family: var(--font-display); font-size: 17px; font-weight: 500; fill: var(--ink); }
.wb-label { font-family: var(--font-sans); font-size: 14px; font-weight: 500; fill: var(--ink); }
.wb-sub { font-family: var(--font-label); font-size: 10.5px; fill: var(--ink-faint); }
.wb-mono { font-family: var(--font-label); font-size: 11.5px; fill: var(--ink-soft); }
.wb-note { font-family: var(--font-display); font-style: italic; font-size: 14px; fill: var(--marker); }
.wb-note.red { fill: var(--red); }
.wb-note.ink { fill: var(--ink-faint); font-style: normal; font-family: var(--font-label); font-size: 11.5px; letter-spacing: 0.04em; text-transform: uppercase; }
.wb-sticky-text { font-family: var(--font-hand); font-size: 16px; font-weight: 600; fill: var(--sticky-ink); }
.wb-line { stroke: var(--ink); stroke-width: 1; fill: none; stroke-linecap: butt; stroke-linejoin: miter; }
.wb-line.accent { stroke: var(--marker); }
.wb-line.dashed { stroke-dasharray: 3 4; }
.wb-line.faint { stroke: var(--line); }
.wb-arrow { marker-end: url(#wb-arrowhead); }
.wb-arrow.accent { marker-end: url(#wb-arrowhead-accent); }
.wb-num { font-family: var(--font-display); font-size: 20px; font-weight: 400; fill: var(--marker); }
.wb-pulse { fill: none; stroke: var(--marker); stroke-width: 2; stroke-linecap: round; stroke-dasharray: 5 95; animation: wb-flow 4s linear infinite; opacity: 0.9; }
@keyframes wb-flow { to { stroke-dashoffset: -100; } }
@media (prefers-reduced-motion: reduce) { .wb-pulse { display: none; } }
.sticky { background: var(--sticky); color: var(--sticky-ink); font-family: var(--font-hand); font-size: 1.25rem; font-weight: 600; line-height: 1.25; padding: var(--space-4) var(--space-4) var(--space-6); box-shadow: 2px 4px 12px -6px rgba(0,0,0,0.35); transform: rotate(-1.4deg); max-width: 280px; }
.sticky.alt { transform: rotate(1.1deg); }
.sticky small { display: block; font-family: var(--font-label); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: var(--space-2); opacity: 0.8; font-weight: 500; }

/* ---------- subpage components ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); border-top: 1px solid var(--ink); padding-top: var(--space-6); }
.stat-num { font-family: var(--font-display); font-size: clamp(2.2rem, 1.2rem + 2.6vw, 3.4rem); font-weight: 400; line-height: 1; letter-spacing: 0; color: var(--ink); font-variation-settings: normal; white-space: nowrap; }
.stat-num sup { font-size: 0.45em; vertical-align: 0.7em; letter-spacing: 0; }
.stat-num .accent { color: var(--ink-faint); }
.stat-label { margin-top: var(--space-3); font-size: var(--text-sm); color: var(--ink-soft); line-height: 1.4; }
.stat-source { margin-top: var(--space-2); }
@media (max-width: 800px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.split.wide-board { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.split.board-first .board { order: -1; }
@media (max-width: 960px) { .split, .split.wide-board { grid-template-columns: 1fr; } .split.board-first .board { order: 0; } }

.numbered { display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: var(--space-8); padding-block: var(--space-16); border-top: 1px solid var(--line); }
.numbered:first-of-type { border-top: 0; padding-top: 0; }
.numbered .n { font-family: var(--font-display); font-size: clamp(2.6rem, 1.8rem + 2.6vw, 4.4rem); font-weight: 400; color: var(--ink); line-height: 0.8; letter-spacing: 0; font-variation-settings: normal; }
.numbered h2 { margin-bottom: var(--space-4); max-width: 24ch; }
.numbered .lede { font-size: var(--text-lg); margin-top: 0; margin-bottom: var(--space-8); max-width: 40ch; }
.numbered .body { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
.numbered .body.two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
@media (max-width: 800px) { .numbered { grid-template-columns: 1fr; gap: var(--space-3); } .numbered .body.two { grid-template-columns: 1fr; } }

.pts { display: flex; flex-direction: column; gap: var(--space-4); max-width: var(--measure); }
.pt { display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: var(--space-3); color: var(--ink-soft); }
.pt::before { content: ''; width: 6px; height: 6px; margin-top: 0.6em; border-radius: 50%; background: var(--marker); }
.pt strong { color: var(--ink); display: block; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-12) var(--space-8); border-top: 1px solid var(--line); padding-top: var(--space-8); }
.card { display: flex; flex-direction: column; gap: var(--space-3); }
.card h3 { font-size: var(--text-md); }
.card p { color: var(--ink-soft); font-size: var(--text-base); }
.card .meta { margin-top: auto; padding-top: var(--space-2); }
.card a { color: var(--ink); }

.timeline { position: relative; display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.era { padding-block: var(--space-8); display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: var(--space-8); border-bottom: 1px solid var(--line); }
.era .who { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 500; margin-top: var(--space-2); }
.era.current .who { color: var(--marker); }
.era .titles { font-size: var(--text-sm); color: var(--ink-faint); margin-top: var(--space-2); line-height: 1.4; }
.era h3 { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 500; letter-spacing: -0.015em; line-height: 1.15; font-variation-settings: normal; margin-bottom: var(--space-3); max-width: 26ch; }
.era p { color: var(--ink-soft); max-width: 60ch; }
@media (max-width: 800px) { .era { grid-template-columns: 1fr; gap: var(--space-3); } }

.testimonial-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); margin-top: var(--space-12); }
.testimonial-card { display: flex; flex-direction: column; gap: var(--space-4); }
.quote-mark { display: none; }
.quote { font-family: var(--font-sans); font-size: var(--text-lg); font-variation-settings: normal; color: var(--ink); line-height: 1.4; max-width: 44ch; }
.testimonial-attr { font-family: var(--font-label); font-size: var(--text-m); color: var(--ink-faint); }
.testimonial-attr strong { color: var(--ink); font-weight: 500; }
.testimonial-attr strong::after { content: ' · '; }
@media (max-width: 800px) { .testimonial-grid { grid-template-columns: 1fr; } }

.note { border-left: 1px solid var(--marker); padding: var(--space-2) var(--space-4); max-width: 60ch; }
.note strong { color: var(--ink); }
.note.red { border-color: var(--red); }

.receipt-block { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); padding: var(--space-4) 0; color: var(--ink-soft); overflow-x: auto; white-space: pre; line-height: 1.6; }
.receipt-block .k { color: var(--marker); }
.receipt-block .c { color: var(--ink-faint); font-style: italic; }

.terminal {
  margin: 0; min-width: 0;
  background: #1b1d21;
  border: 1px solid #2c3036;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 18px 40px -24px rgba(27, 26, 23, 0.55);
}
.terminal-bar {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.55rem 0.85rem;
  background: #25282e;
  border-bottom: 1px solid #32363c;
}
.terminal-dots {
  width: 10px; height: 10px; border-radius: 50%; flex: 0 0 10px;
  background: #ff5f57;
  box-shadow: 16px 0 0 #febc2e, 32px 0 0 #28c840;
}
.terminal-title {
  flex: 1; text-align: center;
  font-family: var(--font-code); font-size: 0.72rem; letter-spacing: 0.02em;
  color: #9a958c;
  padding-right: 42px;
}
.terminal .receipt-block {
  border: 0; margin: 0; padding: 0.9rem 1rem 1.05rem;
  background: transparent; color: #d8d3c8;
  font-size: 0.68rem; line-height: 1.5;
}
.terminal .receipt-block .k { color: #e8763f; }
.terminal .receipt-block .c { color: #8c877b; }
#stack { scroll-margin-top: 5rem; }

/* page hero (subpages) */
.page-hero { padding-block: clamp(2.25rem, 1.4rem + 2vw, 3.5rem) var(--space-8); }
.page-hero h1 { font-size: var(--text-3xl); max-width: 18ch; margin-top: var(--space-4); letter-spacing: 0; font-weight: 400; }
.page-hero .lede { font-size: var(--text-lg); margin-top: var(--space-6); max-width: 48ch; }
.page-hero .stat-row { margin-top: var(--space-12); }
.page-hero .receipt-line { margin-top: var(--space-8); padding-top: var(--space-4); border-top: 1px solid var(--line); max-width: 60ch; }

/* ---------- footer ---------- */
.footer { padding-block: 0 var(--space-section); }
.footer-inner { align-items: start; }
.footer-text { display: flex; flex-direction: column; gap: var(--space-6); }
.footer h2 { font-size: var(--text-3xl); letter-spacing: 0; }
.footer-text p { color: var(--ink-soft); font-size: var(--text-md); max-width: 54ch; }
.footer .mail { display: inline-block; font-size: var(--text-xl); letter-spacing: -0.01em; color: var(--spot); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.15em; font-variation-settings: normal; }
.footer .mail:hover { color: var(--marker); }
.footer-photo { display: none; }
.colophon { grid-column: 10 / span 3; }
.footer .colophon-line { margin-top: var(--space-16); padding-top: var(--space-4); border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.footer-meta { display: none; }

/* reveal */
.reveal-pending { opacity: 0; transform: translateY(10px); }
.reveal-pending.is-visible { opacity: 1; transform: none; transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out); }

/* ---------- subpage chapters (plate beside the deck, then a figure) ---------- */
.page-hero .read-row .plate-fig { margin-top: 0; }
.page-hero .read-row .main .lede { margin-top: var(--space-6); }
section .row.read-row .main p:not(.deck) { color: var(--ink-soft); }
.steps { margin-top: var(--space-12); display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-6); border-top: 1px solid var(--line); padding-top: var(--space-6); counter-reset: step; }
.steps li { counter-increment: step; display: flex; flex-direction: column; gap: var(--space-2); min-width: 0; }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--font-label); font-size: var(--text-m); color: var(--ink-faint); letter-spacing: 0.06em; }
.steps li:last-child::before, .steps li:nth-last-child(2)::before { color: var(--marker); }
.steps b { font-weight: 500; color: var(--ink); font-size: var(--text-base); line-height: 1.25; font-variation-settings: normal; }
.steps span { font-size: var(--text-sm); color: var(--ink-faint); line-height: 1.45; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.steps + .rules { margin-top: var(--space-12); }
.rules + .row, .score + .row { margin-top: var(--space-8); }
.score { margin-top: var(--space-12); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--space-8); border-top: 1px solid var(--line); padding-top: var(--space-6); }
.score .m { display: block; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); }
.score ul { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.score li { font-size: var(--text-base); color: var(--ink); line-height: 1.4; padding-top: var(--space-2); border-top: 1px solid var(--line); font-variation-settings: normal; }
@media (max-width: 800px) { .score { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.steps.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.steps li[data-n]::before { content: attr(data-n); }
.steps.four li:nth-last-child(2)::before { color: var(--ink-faint); }
@media (max-width: 800px) { .steps.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.page-hero .read-row .main .receipt-line { margin-top: var(--space-8); }
/* subpages only: the chapter deck keeps display scale inside the main column (home keeps its own reading) */
body.sub .main p.deck { font-size: clamp(1.4rem, 1.1rem + 1vw, 1.75rem); line-height: 1.3; letter-spacing: -0.015em; color: var(--ink); max-width: 32ch; font-variation-settings: normal; }
body.sub .read-row .main .deck { margin-top: 0; }
body.sub .row > .main > .deck:first-child { margin-top: 0; }
.steps + .row { margin-top: var(--space-8); }

/* Keep restored whiteboards legible on narrow screens. */
.restored-board { margin-top: var(--space-10); }
.diagram-scroll { overflow-x: auto; }
.diagram-scroll:focus-visible { outline: 2px solid var(--spot); outline-offset: 4px; }
.diagram-scroll svg { min-width: 760px; }
#fleet .diagram-scroll svg { min-width: 760px; }

.diagram-notes { margin-top: var(--space-6); }
.diagram-notes summary { cursor: pointer; font-family: var(--font-label); font-size: var(--text-sm); color: var(--ink-soft); }

.table-scroll { overflow-x: auto; }
.table-scroll .ftable { min-width: 640px; }
.table-scroll:focus-visible { outline: 2px solid var(--spot); outline-offset: 4px; }

.project-group { margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--line); font-size: var(--text-xl); }
.project-group + .rules { margin-top: var(--space-6); }

/* Give handwritten headings the weight and space of marker lettering. */
h1, h2, h3, h4, .index .title, .rule h3, .page-hero h1, .ledger .big, .stat-num, .stat-line .big, h2.rh::before, .numbered .n { font-weight: 600; letter-spacing: 0; }
h1, h2, h3, h4, .index .title { line-height: 1.12; }
h2.rh { font-weight: 500; }
.rule h3, .era h3, .project-group { font-size: 1.8rem; }
.page-hero h1 { font-size: clamp(2.5rem, 1.6rem + 2.5vw, 3.75rem); }
.nav-logo { font-size: 1.65rem; font-weight: 600; }
.receipt-block, pre, code { font-family: var(--font-code); }

/* ---------- designed loop videos (Revenue Brain, operating circuit, career arc) ---------- */
/* Cream in the drawings multiplies through to the page paper, so the 32px gridboard shows in the loops. Do not invert in dark mode: the type is baked in. */
.loop { margin-top: var(--space-6); border-top: 1px solid var(--line); padding-top: var(--space-4); }
.loop .board-tab { margin-bottom: var(--space-4); }
.loop-media { position: relative; }
.loop-media video, .loop-media img {
  width: 100%; height: auto; display: block; background: transparent;
  mix-blend-mode: multiply; filter: brightness(1.05) contrast(1.02);
}
.loop-media video { object-fit: contain; }
.loop-media video img { display: none; }
.loop-caption { margin-top: var(--space-4); max-width: 64ch; }
#fleet { padding-bottom: 0; }
#built { padding-top: var(--space-6); }
.era, #now, #human-data, #grew, #led, #events, #discipline, #people { scroll-margin-top: 5rem; }
:root[data-theme="dark"] .loop-media video,
:root[data-theme="dark"] .loop-media img { mix-blend-mode: normal; filter: none; }
:root[data-theme="dark"] .loop-media::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(27, 26, 23, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 26, 23, 0.055) 1px, transparent 1px);
  background-size: 32px 32px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .loop-media video,
  :root:not([data-theme="light"]) .loop-media img { mix-blend-mode: normal; filter: none; }
  :root:not([data-theme="light"]) .loop-media::after {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
      linear-gradient(rgba(27, 26, 23, 0.055) 1px, transparent 1px),
      linear-gradient(90deg, rgba(27, 26, 23, 0.055) 1px, transparent 1px);
    background-size: 32px 32px;
  }
}