/* Styling for the Department of Information guide itself (not part of Pencil Box). */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font: var(--text-body-m);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-text-link); text-underline-offset: 2px; }
img { max-width: 100%; height: auto; }
code, pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.8125rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: var(--space-16); top: var(--space-16); z-index: 10; background: var(--color-bg-surface); padding: var(--space-8); }

/* ---------- shell: top bar + sidebar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: var(--space-12);
  height: 48px; padding: 0 var(--space-16);
  background: var(--color-bg-page);
  border-bottom: var(--border-width-1) solid var(--color-border-default);
}
.brand { display: flex; align-items: center; gap: var(--space-12); color: var(--color-text-primary); text-decoration: none; font: var(--text-body-s); }
.brand b { font-weight: 700; }
.mark { display: block; width: 22px; height: 22px; color: var(--color-text-primary); flex: none; }
.mark .logo { display: block; width: 100%; height: 100%; }
.theme-toggle {
  margin-left: auto; height: 32px; padding: 0 var(--space-12);
  border: var(--border-width-1) solid var(--color-border-default); border-radius: var(--radius-none);
  background: transparent; color: var(--color-text-primary); font: var(--text-label-s); cursor: pointer; white-space: nowrap;
}
.theme-toggle:hover { background: var(--color-bg-muted); }
.nav-toggle { display: none; width: 32px; height: 32px; padding: 0; border: 0; background: transparent; color: var(--color-text-primary); cursor: pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { display: block; width: 18px; height: 1.5px; margin: 0 auto; background: currentColor; position: relative; content: ""; }
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

.shell { display: grid; grid-template-columns: 264px minmax(0, 1fr); min-height: calc(100vh - 48px); }

.sidenav {
  position: sticky; top: 48px; align-self: start;
  display: flex; flex-direction: column;
  height: calc(100vh - 48px); overflow-y: auto;
  background: var(--color-bg-page);
  border-right: var(--border-width-1) solid var(--color-border-subtle);
}
.find {
  display: flex; align-items: center; gap: var(--space-8);
  margin: 0 var(--space-16) var(--space-12); padding: 0 var(--space-12);
  height: 40px; background: var(--color-bg-muted);
  border-bottom: var(--border-width-1) solid var(--color-border-default);
}
.find svg { width: 16px; height: 16px; flex: none; color: var(--color-text-secondary); }
.find input { flex: 1; min-width: 0; height: 100%; border: 0; background: transparent; color: var(--color-text-primary); font: var(--text-body-s); outline: none; }
.find:focus-within { box-shadow: 0 0 0 var(--border-width-2) var(--color-border-focus); }
.find-results { margin: 0 0 var(--space-12); }
.find-results a { display: block; padding: var(--space-8) var(--space-16); color: var(--color-text-primary); text-decoration: none; font: var(--text-body-s); }
.find-results a:hover, .find-results a:focus-visible { background: var(--color-bg-muted); }
.find-results small { display: block; color: var(--color-text-muted); font: var(--text-caption); }
.find-results p { margin: 0; padding: var(--space-8) var(--space-16); font: var(--text-body-s); color: var(--color-text-secondary); }

.nav { display: flex; flex-direction: column; }
.nav-sec summary {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px var(--space-16); cursor: pointer; list-style: none;
  font: var(--text-label-m); color: var(--color-text-primary);
}
.nav-sec summary::-webkit-details-marker { display: none; }
.nav-sec summary::after {
  content: ""; width: 7px; height: 7px; margin-right: 4px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg); transition: transform 120ms ease;
}
.nav-sec[open] > summary::after { transform: translateY(2px) rotate(-135deg); }
.nav-sec summary:hover, .nav-link:hover { background: var(--color-bg-muted); }
.nav-sec--1 > summary { padding-left: var(--space-24); font: var(--text-body-s); }
.nav-sec--1[open] > summary { font-weight: 700; }
.nav-link {
  display: block; padding: 8px var(--space-16) 8px var(--space-24);
  color: var(--color-text-secondary); text-decoration: none; font: var(--text-body-s);
}
.nav-sec--1 .nav-link { padding-left: 36px; }
.nav-link[aria-current="page"] {
  background: var(--color-bg-muted); color: var(--color-text-primary); font-weight: 700;
  box-shadow: inset 2px 0 0 var(--color-border-default);
}
.nav-foot { margin-top: auto; padding: var(--space-16) 0; border-top: var(--border-width-1) solid var(--color-border-subtle); }
.nav-foot a { display: flex; justify-content: space-between; gap: var(--space-8); padding: 8px var(--space-16); color: var(--color-text-primary); text-decoration: none; font: var(--text-label-m); }
.nav-foot a:hover { background: var(--color-bg-muted); }
.nav-foot span { color: var(--color-text-muted); }

/* collapsible sidebar (desktop): a thin rail with a grip until opened */
.side-inner { display: flex; flex-direction: column; flex: 1; min-height: 0; overflow-y: auto; padding-top: var(--space-16); }
.side-grip { display: none; }
@media (min-width: 861px) {
  .shell { grid-template-columns: 24px minmax(0, 1fr); transition: grid-template-columns 180ms ease; }
  html.side-open .shell { grid-template-columns: 264px minmax(0, 1fr); }
  .sidenav { padding-top: 0; overflow: hidden; }
  html:not(.side-open) .side-inner { visibility: hidden; }
  .side-grip {
    display: grid; place-items: center;
    position: absolute; top: 0; right: 0; bottom: 0; width: 24px; padding: 0;
    border: 0; background: transparent; cursor: pointer; color: var(--color-border-subtle);
  }
  .side-grip span { width: 2px; height: 48px; background: currentColor; transition: background 120ms ease, height 120ms ease; }
  .side-grip:hover, .side-grip:focus-visible { color: var(--color-text-primary); }
  .side-grip:hover span { height: 64px; }
  html:not(.side-open) .side-grip { color: var(--color-text-muted); }
  html.side-open .side-grip { width: 12px; }
}
@media (min-width: 861px) and (prefers-reduced-motion: reduce) { .shell { transition: none; } }

/* ---------- page ---------- */
.main { min-width: 0; display: flex; flex-direction: column; }
.page-head { padding: var(--space-32) var(--space-48) var(--space-48); }
.running {
  display: flex; justify-content: space-between; gap: var(--space-16);
  margin: 0 0 var(--space-24); padding-bottom: var(--space-8);
  border-bottom: var(--border-width-1) solid var(--color-border-default);
  font: var(--text-caption); color: var(--color-text-primary);
}
.page-head h1 { margin: 0; font: 900 clamp(2.5rem, 5vw, 4rem)/1.02 var(--font-display); letter-spacing: -0.035em; }
.updated { margin: var(--space-16) 0 0; font: var(--text-caption); color: var(--color-text-secondary); }
.page-head .lede { margin: var(--space-24) 0 0; max-width: 60ch; font: var(--text-body-l); }

.page-body { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: var(--space-48); padding: 0 var(--space-48); }
.content { min-width: 0; padding-bottom: var(--space-48); }
.toc { position: sticky; top: 80px; align-self: start; margin-top: var(--space-48); border-left: var(--border-width-1) solid var(--color-border-subtle); }
.toc-title { margin: 0 0 var(--space-8); padding-left: var(--space-16); font: var(--text-label-s); color: var(--color-text-muted); }
.toc a { display: block; padding: 6px var(--space-16); color: var(--color-text-secondary); text-decoration: none; font: var(--text-body-s); }
.toc a:hover { color: var(--color-text-primary); }
.toc a.is-active { color: var(--color-text-primary); font-weight: 700; box-shadow: -1px 0 0 0 var(--color-border-default), inset 1px 0 0 var(--color-border-default); }

.to-top {
  position: fixed; right: var(--space-24); bottom: var(--space-24); z-index: 20;
  display: grid; place-items: center; width: 44px; height: 44px;
  background: var(--color-bg-inverse); color: var(--color-text-inverse);
  opacity: 0; pointer-events: none; transition: opacity 150ms ease;
}
.to-top svg { width: 18px; height: 18px; }
.to-top.is-visible { opacity: 1; pointer-events: auto; }

/* content */
.content > h2:first-child { margin-top: var(--space-32); }
.lede { font: var(--text-body-l); max-width: 62ch; margin: 0 0 var(--space-48); color: var(--color-text-primary); }
.main h2 {
  font: var(--text-heading-m); letter-spacing: -0.02em;
  margin: var(--space-64) 0 var(--space-16);
  padding-top: var(--space-12);
  border-top: var(--border-width-1) solid var(--color-border-default);
  scroll-margin-top: 64px;
}
.main h3 { font: var(--text-label-m); margin: var(--space-24) 0 var(--space-8); }
.main p, .main li { max-width: 68ch; }
.main .running, .main .doi-running { max-width: none; }
.main ul { padding-left: 1.2em; }
.note { color: var(--color-text-secondary); font: var(--text-body-s); }

.stage {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-16);
  padding: var(--space-32);
  background: var(--color-bg-surface);
  border: var(--border-width-1) solid var(--color-border-subtle);
}
.stage--col { flex-direction: column; align-items: stretch; }
.stage + pre { margin-top: 0; border-top: 0; }
pre {
  margin: 0 0 var(--space-24); padding: var(--space-16); overflow-x: auto;
  background: var(--color-bg-muted);
  border: var(--border-width-1) solid var(--color-border-subtle);
  line-height: 1.5;
}
:not(pre) > code { padding: 1px 4px; background: var(--color-bg-muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; }
.split > [data-theme] { background: var(--color-bg-page); color: var(--color-text-primary); padding: var(--space-32); display: flex; flex-wrap: wrap; gap: var(--space-16); align-items: center; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.split-label { flex-basis: 100%; font: var(--text-label-s); color: var(--color-text-muted); }

/* state matrix */
.matrix { width: 100%; border-collapse: collapse; background: var(--color-bg-surface); border: var(--border-width-1) solid var(--color-border-subtle); }
.matrix-wrap { overflow-x: auto; margin-bottom: var(--space-24); }
.matrix th { font: var(--text-label-s); color: var(--color-text-secondary); text-align: left; padding: var(--space-12) var(--space-16); white-space: nowrap; }
.matrix td { padding: var(--space-12) var(--space-16); }
.matrix tr + tr th, .matrix tr + tr td { border-top: var(--border-width-1) solid var(--color-border-subtle); }

/* plain spec tables */
.spec { width: 100%; border-collapse: collapse; margin: var(--space-16) 0 var(--space-24); font: var(--text-body-s); }
.spec th, .spec td { text-align: left; vertical-align: top; padding: var(--space-8) var(--space-12) var(--space-8) 0; border-top: var(--border-width-1) solid var(--color-border-subtle); }
.spec thead th { font: var(--text-label-s); border-top: var(--border-width-1) solid var(--color-border-default); }
.spec tbody th { font-weight: 700; white-space: nowrap; }
.spec-wrap { overflow-x: auto; }

/* do / don't */
.rules { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); margin: var(--space-16) 0 var(--space-24); }
.rule { padding: var(--space-16) var(--space-24); border-top: 2px solid; background: var(--color-bg-surface); }
.rule--do { border-color: var(--color-border-default); }
.rule--dont { border-color: var(--color-border-accent); }
.rule b { display: block; font: var(--text-label-m); margin-bottom: var(--space-4); }
.rule p { margin: 0; font: var(--text-body-s); }

/* interface color tables */
.swatch-row h3 { text-transform: capitalize; }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: var(--space-8); }
.swatch { margin: 0; }
.swatch-color { display: block; height: 64px; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.swatch figcaption { display: grid; padding-top: var(--space-4); font: var(--text-caption); }
.swatch figcaption b { font: var(--text-label-s); }
.hex { color: var(--color-text-secondary); font-family: ui-monospace, Menlo, monospace; font-size: 0.75rem; }
.roles { width: 100%; border-collapse: collapse; margin-bottom: var(--space-24); }
.roles th { font: var(--text-label-s); color: var(--color-text-secondary); text-align: left; padding: var(--space-8) var(--space-12); }
.roles td { padding: var(--space-12); vertical-align: middle; border-top: var(--border-width-1) solid var(--color-border-subtle); }
.roles td:first-child { width: 50%; }
.roles td[data-theme] { background: var(--color-bg-page); color: var(--color-text-primary); white-space: nowrap; }
.role-desc { display: block; margin-top: 2px; font: var(--text-body-s); color: var(--color-text-secondary); }
.chip { display: inline-block; width: 40px; height: 24px; vertical-align: middle; margin-right: var(--space-8); background: var(--c); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.ref { font: var(--text-caption); color: var(--color-text-secondary); }
.contrast { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-8); }
.contrast-cell { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-8); padding: var(--space-16); font: var(--text-body-s); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.contrast-cell b { font: var(--text-heading-s); }

/* type + scale */
.type-row { display: grid; grid-template-columns: 240px 1fr; gap: var(--space-24); padding: var(--space-16) 0; border-top: var(--border-width-1) solid var(--color-border-subtle); align-items: baseline; }
.type-row p { margin: 0; max-width: 34em; }
.type-meta { display: grid; gap: 2px; font: var(--text-caption); color: var(--color-text-secondary); }
.scale-row { display: grid; grid-template-columns: 200px 48px 1fr; align-items: center; gap: var(--space-16); padding: var(--space-8) 0; border-top: var(--border-width-1) solid var(--color-border-subtle); }
.scale-val { font: var(--text-caption); color: var(--color-text-secondary); text-align: right; }
.scale-bar { display: block; height: 12px; width: var(--v); max-width: 100%; background: var(--color-text-primary); }

/* overview */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-16); margin: var(--space-24) 0; }
.card { display: block; padding: var(--space-16) 0 var(--space-24); border-top: var(--border-width-1) solid var(--color-border-default); color: var(--color-text-primary); text-decoration: none; }
.card:hover b { text-decoration: underline; text-underline-offset: 3px; }
.card b { display: block; font: var(--text-heading-s); margin-bottom: var(--space-8); }
.card span { font: var(--text-body-s); color: var(--color-text-secondary); }
.principles { counter-reset: p; list-style: none; padding: 0; display: grid; gap: var(--space-16); }
.principles li { counter-increment: p; display: grid; grid-template-columns: 48px 1fr; gap: var(--space-16); padding-top: var(--space-12); border-top: var(--border-width-1) solid var(--color-border-subtle); }
.principles li::before { content: counter(p, decimal-leading-zero); font: var(--text-heading-s); }
.principles b { display: block; }

.foot { display: flex; flex-wrap: wrap; gap: var(--space-8) var(--space-32); margin: auto var(--space-48) 0; padding: var(--space-12) 72px var(--space-32) 0; border-top: var(--border-width-1) solid var(--color-border-default); font: var(--text-caption); }
.foot a { margin-left: auto; color: inherit; }

/* small screens */
@media (max-width: 1100px) {
  .page-body { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .shell { grid-template-columns: minmax(0, 1fr); }
  .sidenav {
    position: fixed; top: 48px; left: 0; z-index: 25; width: min(300px, 85vw);
    transform: translateX(-100%); transition: transform 180ms ease;
    box-shadow: 1px 0 0 var(--color-border-default);
  }
  .sidenav.is-open { transform: none; }
  .brand span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .page-head { padding: var(--space-24) var(--space-16) var(--space-24); }
  .page-body { padding: 0 var(--space-16); }
  .foot { margin: auto var(--space-16) 0; padding-right: 0; }
  .foot a { margin-left: 0; }
  .split, .rules { grid-template-columns: 1fr; }
  .type-row, .scale-row { grid-template-columns: 1fr; gap: var(--space-4); }
  .scale-val { text-align: left; }
  .roles td:first-child { width: auto; }
  .stage { padding: var(--space-16); }
}

/* ---------- homepage: the manual's cover ---------- */
.home { padding: var(--space-48); }
.cover {
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto auto 1fr;
  column-gap: var(--grid-gutter, 24px);
  min-height: max(560px, calc(100vh - 48px - 96px));
  padding: 0 var(--space-32);
  background: var(--color-black-100); color: var(--color-manila-100);
  box-shadow: inset 0 0 0 1px var(--color-black-90);
}
.cover-top, .cover-mid, .cover-bottom { grid-column: 1 / -1; display: grid; grid-template-columns: subgrid; }
.cover-top { padding: var(--space-24) 0 var(--space-32); border-top: 1px solid currentColor; margin-top: var(--space-32); }
.cover-seal { width: min(100%, 300px); }
.cover-seal .logo { display: block; width: 100%; height: auto; }
.cover-name { margin: 0; font: 900 clamp(1.75rem, 3.6vw, 3rem)/1.02 var(--font-display); letter-spacing: -0.03em; }
.cover-mid { padding-top: var(--space-12); border-top: 1px solid currentColor; }
.cover-version { margin: 0; font: var(--text-caption); }
.cover-title { margin: 0; font: 400 clamp(1.75rem, 3.6vw, 3rem)/1.05 var(--font-display); letter-spacing: -0.03em; }
.cover-bottom { align-self: end; padding-bottom: var(--space-32); }
.cover-oid {
  grid-column: 2; margin: 0 0 var(--space-24); min-height: 64px; padding: var(--space-8);
  background: var(--color-manila-100); color: var(--color-black-100); font: var(--text-caption);
}
.cover-bottom::after { content: ""; grid-column: 1 / -1; border-top: 1px solid currentColor; }
.home-body { max-width: 960px; padding-top: var(--space-64); }
.home-body h1 { margin: 0; font: 900 clamp(2.75rem, 6vw, 5rem)/1 var(--font-display); letter-spacing: -0.04em; }
.home-body > .lede { margin: var(--space-32) 0 var(--space-16); max-width: 60ch; font: var(--text-body-l); }
.home-body .updated { margin: 0 0 var(--space-48); }
.columns { columns: 2; column-gap: var(--grid-gutter, 24px); }
.columns p { margin-top: 0; break-inside: avoid; }

/* ---------- plates: pages and photographs from the manual ---------- */
.plate { margin: var(--space-24) 0; }
.plate img { display: block; width: 100%; background: var(--color-black-90); box-shadow: 0 0 0 1px var(--color-border-subtle); }
.plate figcaption { display: flex; justify-content: space-between; gap: var(--space-16); padding-top: var(--space-8); font: var(--text-caption); color: var(--color-text-secondary); }
.plate figcaption span:last-child { flex: none; color: var(--color-text-muted); }
.plates { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); }
.plates .plate { margin: var(--space-8) 0; }

/* ---------- seal and identifiers ---------- */
.logo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-12); margin: var(--space-16) 0 var(--space-24); }
.logo-tile { position: relative; margin: 0; display: grid; place-items: center; aspect-ratio: 1; padding: 18%; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.logo-tile .logo { width: 100%; height: auto; }
.logo-tile figcaption { position: absolute; top: var(--space-12); left: var(--space-12); right: var(--space-12); font: var(--text-label-s); }
.logo-tile--wide { aspect-ratio: auto; padding: 12% 6%; }
.tile-note { margin: var(--space-8) 0 0; font: var(--text-body-s); color: var(--color-text-secondary); }

.misuse { position: relative; }
.misuse::after {
  content: ""; position: absolute; right: var(--space-12); bottom: var(--space-12); width: 22px; height: 22px;
  background: var(--color-red-100);
  clip-path: polygon(20% 10%, 50% 40%, 80% 10%, 90% 20%, 60% 50%, 90% 80%, 80% 90%, 50% 60%, 20% 90%, 10% 80%, 40% 50%, 10% 20%);
}

.clearspace {
  position: relative; display: grid; place-items: center;
  width: min(420px, 100%); aspect-ratio: 1; margin: var(--space-16) 0;
  color: var(--color-text-muted);
}
.clearspace-zone { position: absolute; inset: 0; background: var(--color-bg-page); outline: 1px dashed var(--color-border-accent); outline-offset: -1px; }
.clearspace .logo { position: relative; width: 70%; height: auto; color: var(--color-text-secondary); opacity: .6; }
.cs-unit { position: absolute; width: 15%; aspect-ratio: 1; border: 1px solid var(--color-red-100); border-radius: 50%; }
.cs-unit::before, .cs-unit::after { content: ""; position: absolute; background: var(--color-red-100); }
.cs-unit::before { left: 50%; top: 15%; bottom: 15%; width: 1px; }
.cs-unit::after { top: 50%; left: 15%; right: 15%; height: 1px; }
.cs-top { top: 0; left: 42.5%; } .cs-bottom { bottom: 0; left: 42.5%; } .cs-left { left: 0; top: 42.5%; } .cs-right { right: 0; top: 42.5%; }
.cs-core { left: 42.5%; top: 42.5%; }

.sizes { width: 100%; border-collapse: collapse; margin: var(--space-16) 0 var(--space-24); font: var(--text-body-s); }
.sizes td { vertical-align: top; padding: var(--space-12) var(--space-16) var(--space-16) 0; border-top: var(--border-width-1) solid var(--color-border-default); }
.sizes td:first-child { width: 40%; }
.sizes td:nth-child(2) { width: 12%; font-weight: 700; white-space: nowrap; }
.sizes .logo { display: block; height: auto; }
.sizes ul { margin: 0; padding: 0; list-style: none; columns: 2; }
.sizes .logo--horizontal { width: auto; height: 100%; max-width: none; }

.banners { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.banner { position: relative; margin: 0; aspect-ratio: 1 / 5.4; overflow: hidden; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.banner .logo { position: absolute; left: 50%; top: 50%; width: 486%; /* 90% of the tile height (5.4 × its width) */ height: auto; transform: translate(-50%, -50%) rotate(-90deg); }

.reduce { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-24); margin: var(--space-16) 0; }
.reduce > span { display: block; width: 96px; }
.reduce .logo { display: block; width: 100%; height: auto; }
.reduce i { font-style: normal; color: var(--color-red-100); font-size: 24px; }
.faded { opacity: .25; }

/* ---------- brand color ---------- */
.palette { display: grid; grid-template-columns: 1.6fr 1.6fr 1fr 3.4fr; gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.palette h3 { margin: 0 0 var(--space-8); font: var(--text-heading-s); }
.pal-main { display: flex; align-items: flex-start; min-height: 240px; padding: var(--space-16); font: var(--text-body-s); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.pal-spec { margin: var(--space-8) 0 var(--space-16); font: var(--text-caption); line-height: 1.5; }
.tints { display: grid; gap: var(--space-8); }
.pal-group-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-8); }
.pal-group-cols .pal-main { padding: 10px; font: var(--text-caption); }
.tints span { display: flex; align-items: center; height: 36px; padding: 0 var(--space-12); font: var(--text-caption); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }

.contrast-table { width: 100%; border-collapse: collapse; margin: var(--space-16) 0 var(--space-24); font: var(--text-body-s); }
.contrast-table th, .contrast-table td { padding: var(--space-8); text-align: center; border-top: var(--border-width-1) solid var(--color-border-default); }
.contrast-table th:first-child { text-align: left; font-weight: 400; width: 22%; }
.contrast-table .a { display: inline-grid; place-items: center; width: 56px; height: 56px; font: 900 34px/1 var(--font-display); }

/* ---------- patterns ---------- */
.pattern-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.pattern-grid figure { margin: 0; }
.pattern-grid .doi-pattern { aspect-ratio: 1; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.pattern-grid figcaption { padding-top: var(--space-8); font: var(--text-caption); color: var(--color-text-secondary); }
.pattern-grid code { font-size: 0.6875rem; }
.pattern-wide { height: 180px; margin: var(--space-16) 0; }

/* ---------- typography ---------- */
.specimen { display: grid; grid-template-columns: repeat(13, minmax(0, 1fr)); margin: var(--space-16) 0 var(--space-24); border-left: 1px solid currentColor; border-top: 1px solid currentColor; padding: 0; }
.specimen span { display: grid; place-items: center; aspect-ratio: 1; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; font: 700 clamp(14px, 2.4vw, 26px)/1 var(--font-text); }
.specimen .big { grid-column: span 1; font: 900 clamp(18px, 3.4vw, 38px)/1 var(--font-display); }
.specimen-block { padding: var(--space-24); background: var(--color-bg-page); color: var(--color-text-primary); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.specimen-block .specimen { margin: 0; }

.weights { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: var(--space-16) 0 var(--space-24); }
.weights > div { padding: var(--space-16); box-shadow: inset 0 0 0 0.5px var(--color-border-subtle); }
.weights small { display: block; margin-bottom: var(--space-8); font: var(--text-caption); color: var(--color-text-secondary); }
.weights p { margin: 0; }
.headline-demo { margin: var(--space-16) 0; padding: var(--space-24); background: var(--color-bg-page); color: var(--color-text-primary); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.headline-demo small { display: block; margin-bottom: var(--space-8); font: var(--text-caption); }
.headline-demo p { margin: 0; max-width: none; }

.article-demo { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); column-gap: var(--grid-gutter, 24px); row-gap: var(--space-16); padding: var(--space-32) var(--space-24); background: var(--color-bg-page); color: var(--color-text-primary); box-shadow: inset 0 0 0 1px var(--color-border-subtle); margin: var(--space-16) 0 var(--space-24); }
.article-demo .side { grid-column: 1 / span 2; margin: 0; font: var(--text-caption); color: var(--color-text-secondary); }
.article-demo .main-col { grid-column: 3 / -1; margin: 0; max-width: none; }
.article-demo h4 { font: 700 clamp(1.5rem, 2.6vw, 2rem)/1.05 var(--font-display); letter-spacing: -0.03em; }
.article-demo .body { font: 400 1.0625rem/1.55 var(--font-reading); }
.article-demo .body a { color: inherit; }
.article-demo blockquote { margin: 0; font: italic 700 1.3rem/1.4 var(--font-reading); }
.article-demo .caption { font: var(--text-caption); }
.article-demo .frame { aspect-ratio: 16 / 9; border: 1px solid currentColor; background:
  linear-gradient(to top right, transparent calc(50% - .5px), currentColor calc(50% - .5px), currentColor calc(50% + .5px), transparent calc(50% + .5px)),
  linear-gradient(to bottom right, transparent calc(50% - .5px), currentColor calc(50% - .5px), currentColor calc(50% + .5px), transparent calc(50% + .5px)); }

.broadcast-demo { margin: var(--space-16) 0; padding: var(--space-48) var(--space-32); background: var(--color-blue-100); color: var(--color-manila-100); }
.broadcast-demo p { margin: 0; max-width: none; font: 900 clamp(1.75rem, 4.6vw, 3.5rem)/1.02 var(--font-display); letter-spacing: -0.03em; }
.broadcast-demo p i { font-style: italic; }

/* ---------- grid ---------- */
.grid-demo { position: relative; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 8px; height: 160px; margin: var(--space-16) 0; }
.grid-demo span { background: color-mix(in srgb, var(--color-red-100) 14%, transparent); box-shadow: inset 1px 0 0 var(--color-red-100), inset -1px 0 0 var(--color-red-100); }
.grid-demo--24 { grid-template-columns: repeat(24, minmax(0, 1fr)); column-gap: 4px; }

/* ---------- charts ---------- */
.chart { margin: var(--space-16) 0 var(--space-24); padding: var(--space-24); background: var(--color-bg-page); color: var(--color-text-primary); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.chart h4 { margin: 0 0 var(--space-8); font: var(--text-label-m); }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { fill: currentColor; font: 400 11px var(--font-text); }
.chart .axis { stroke: currentColor; stroke-width: 1; }
.chart .source { margin: var(--space-8) 0 0; font: var(--text-caption); color: var(--color-text-muted); }
.legend { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-16); margin: 0 0 var(--space-16); padding: 0; list-style: none; font: var(--text-caption); }
.legend li { display: flex; align-items: center; gap: 6px; }
.legend i { display: inline-block; width: 12px; height: 12px; box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--grid-gutter, 24px); }
.charts-row .chart { margin: 0; }

/* ---------- misc brand pages ---------- */
.notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.notes > div { padding-top: var(--space-12); border-top: var(--border-width-1) solid var(--color-border-default); }
.notes b { display: block; font: var(--text-label-m); margin-bottom: var(--space-8); }
.notes ul { margin: 0; padding: 0; list-style: none; font: var(--text-body-s); line-height: 1.7; }
.uses { columns: 2; column-gap: var(--space-32); font: var(--text-body-s); line-height: 1.7; padding: 0; list-style: none; }
.downloads { font: var(--text-body-s); }
ul.downloads { padding-left: 1.2em; line-height: 1.7; }
.draft { border-left: 2px solid var(--color-feedback-warning-bg); padding-left: var(--space-12); }
.pill { display: inline-block; padding: 1px 8px; border: 1px solid currentColor; border-radius: var(--radius-full); font: var(--text-caption); }

@media (max-width: 860px) {
  .logo-grid { grid-template-columns: 1fr 1fr; }
  .roles { display: block; overflow-x: auto; }
  .uses, .columns, .sizes ul { columns: 1; }
  .plates, .charts-row, .notes { grid-template-columns: 1fr; }
  .palette { grid-template-columns: 1fr 1fr; }
  .pal-group { grid-column: 1 / -1; }
  .pattern-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .banners { gap: var(--space-8); }
  .weights { grid-template-columns: 1fr; }
  .article-demo { grid-template-columns: 1fr; }
  .article-demo .side, .article-demo .main-col { grid-column: 1; }
  .sizes td:first-child { width: auto; }
}

/* ---------- password gate ---------- */
.gate { display: none; }
html.locked body > :not(.gate) { display: none !important; }
html.locked .gate {
  display: grid; gap: var(--space-24); align-content: center;
  width: min(380px, 100% - 32px); min-height: 100vh; margin: 0 auto;
}
.gate-mark { width: 120px; color: var(--color-text-primary); }
.gate-mark .logo { display: block; width: 100%; height: auto; }
.gate-title { margin: 0; padding-top: var(--space-12); border-top: 1px solid var(--color-border-default); font: 900 1.75rem/1.05 var(--font-display); letter-spacing: -0.03em; }
.gate-title span { font-weight: 400; }
.gate .doi-button { justify-self: start; }

/* phones: cover, top bar (kept last so it wins over the rules above) */
@media (max-width: 860px) {
  .home { padding: var(--space-16); }
  .cover { grid-template-columns: 1fr; min-height: 0; padding: 0 var(--space-16); }
  .cover-top, .cover-mid, .cover-bottom { grid-template-columns: 1fr; gap: var(--space-16); }
  .cover-seal { width: 60%; }
  .cover-oid { grid-column: 1; margin-top: var(--space-48); }
  .home-body { padding-top: var(--space-48); }
  .brand { min-width: 0; flex: 1; }
  .brand span { min-width: 0; }
  .theme-toggle { margin-left: 0; padding: 0 var(--space-8); }
  .sidenav:not(.is-open) { box-shadow: none; }
  .specimen { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* =====================================================================
   12-column grid
   The manual's underlying vertical grid: 12 columns, no horizontal grid.
   24px gutters and 48px margins (4 columns, 16px on phones).
   Content pages use columns 1–8 for content and 10–12 for "On this page".
   ===================================================================== */
:root {
  --grid-cols: 12;
  --grid-gutter: 24px;
  --grid-margin: 48px;
}

.page-head { padding-left: var(--grid-margin); padding-right: var(--grid-margin); }
.page-body { grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--grid-gutter); padding: 0 var(--grid-margin); }
.content { grid-column: 1 / span 8; }
.toc { grid-column: 10 / span 3; }
.foot { margin-left: var(--grid-margin); margin-right: var(--grid-margin); }

.home { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--grid-gutter); padding: var(--grid-margin); }
.cover { grid-column: 1 / -1; }
.home-body { grid-column: 1 / span 8; max-width: none; }

/* grids inside the 8 content columns */
.cards { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter); }
.rules, .split { gap: var(--grid-gutter); }
.contrast { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter); }
.swatches { grid-template-columns: repeat(8, minmax(0, 1fr)); gap: var(--space-16) var(--grid-gutter); }
.state-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter); }
.type-row, .scale-row { grid-template-columns: repeat(8, minmax(0, 1fr)); column-gap: var(--grid-gutter); }
.type-row > .type-meta { grid-column: 1 / span 2; }
.type-row > p { grid-column: 3 / -1; }
.scale-row > code { grid-column: 1 / span 2; }
.scale-row > .scale-val { grid-column: 3; text-align: left; }
.scale-row > .scale-bar { grid-column: 4 / -1; }
.logo-grid { grid-template-columns: repeat(8, minmax(0, 1fr)); gap: var(--grid-gutter); }
.logo-tile { grid-column: span 4; }
.logo-grid--4 .logo-tile { grid-column: span 2; padding: 32% 24% 16%; }
.logo-grid--4 .logo-tile figcaption { font: var(--text-caption); font-weight: 700; }
.logo-tile--wide { grid-column: 1 / -1; }

@media (max-width: 1100px) {
  .content { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  :root { --grid-cols: 4; --grid-gutter: 16px; --grid-margin: 16px; }
  .page-body, .home { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .home-body { grid-column: 1 / -1; }
  .cards, .contrast, .state-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .swatches { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .type-row, .scale-row { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .type-row > .type-meta, .type-row > p, .scale-row > code { grid-column: 1 / -1; }
  .scale-row > .scale-val { grid-column: 1; }
  .scale-row > .scale-bar { grid-column: 2 / -1; }
  .logo-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .logo-tile, .logo-grid--4 .logo-tile { grid-column: span 2; }
}

/* share link next to section headings */
.main h2 { display: flex; align-items: baseline; gap: var(--space-8); }
.h-share {
  position: relative; display: inline-grid; place-items: center; align-self: center;
  width: 28px; height: 28px; flex: none;
  color: var(--color-text-muted); opacity: 0; transition: opacity 120ms ease, color 120ms ease;
}
.h-share svg { width: 16px; height: 16px; }
.main h2:hover .h-share, .h-share:focus-visible, .h-share.is-tipped { opacity: 1; }
.h-share:hover { color: var(--color-text-primary); background: var(--color-bg-muted); }
@media (pointer: coarse) { .h-share { opacity: 0.6; } }
.h-share::after {
  content: attr(data-tip); position: absolute; left: 100%; top: 50%; margin-left: var(--space-8);
  transform: translateY(-50%); white-space: nowrap; padding: 4px 8px;
  background: var(--color-bg-inverse); color: var(--color-text-inverse); font: var(--text-label-s);
  opacity: 0; pointer-events: none; transition: opacity 120ms ease;
}
.h-share.is-tipped::after { opacity: 1; }

/* "Edit this page" link under each title */
.edit-link { color: var(--color-text-secondary); text-decoration: underline; text-decoration-color: var(--color-border-subtle, currentColor); text-underline-offset: 3px; }
.edit-link:hover { color: var(--color-text-primary); text-decoration-color: currentColor; }

/* ---------- physical media: 12-inch record jacket (assets/jacket.js turns it) ----------
   Everything is sized from --s, the jacket's edge, so the print scales with it.
   A real jacket is 12.375in square and about 3mm thick; --d is exaggerated a little. */
.jk-wrap { margin: var(--space-16) 0 var(--space-24); }
.playground-controls { display: flex; flex-wrap: wrap; gap: var(--space-12); margin: var(--space-16) 0 var(--space-24); }
.jk-stage {
  --s: 400px; --d: 6px; --jk-stock: #232323; --jk-ink: #FBFBF4;
  position: relative; display: grid; place-items: center; height: 620px; overflow: hidden;
  background: linear-gradient(180deg, #A9A9A9 0%, #C9C9C9 62%, #D6D6D6 100%);
  perspective: 1600px; cursor: grab; touch-action: none; user-select: none; -webkit-user-select: none;
}
.jk-stage:active { cursor: grabbing; }
.jk-stage:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: -2px; }
.jk-scale { transform-style: preserve-3d; }
.jk-box { position: relative; width: var(--s); height: var(--s); transform-style: preserve-3d; will-change: transform; }
.jk-face, .jk-edge {
  position: absolute; overflow: hidden; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  background: var(--jk-stock); color: var(--jk-ink);
}
.jk-face::after, .jk-edge::after { content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 5;
  background: linear-gradient(135deg, rgba(255,255,255,var(--sheen, 0)), rgba(255,255,255,0) 60%), rgba(0,0,0,var(--shade, 0)); }
.jk-face { left: 0; top: 0; width: var(--s); height: var(--s); }
.jk-front { transform: translateZ(calc(var(--d) / 2)); }
.jk-back  { transform: rotateY(180deg) translateZ(calc(var(--d) / 2)); }
.jk-edge--l, .jk-edge--r { top: 0; left: calc(50% - var(--d) / 2); width: var(--d); height: var(--s); }
.jk-edge--t, .jk-edge--b { left: 0; top: calc(50% - var(--d) / 2); width: var(--s); height: var(--d); }
.jk-edge--l { transform: rotateY(-90deg) translateZ(calc(var(--s) / 2)); }
.jk-edge--r { transform: rotateY(90deg) translateZ(calc(var(--s) / 2)); background: #0B0B0B; box-shadow: inset 0 0 0 1px #2E2E2E; }
.jk-edge--t { transform: rotateX(90deg) translateZ(calc(var(--s) / 2)); }
.jk-edge--b { transform: rotateX(-90deg) translateZ(calc(var(--s) / 2)); }
.jk-floor {
  position: absolute; left: 50%; bottom: 66px; width: 460px; height: 44px; margin-left: -230px;
  border-radius: 50%; background: radial-gradient(closest-side, rgba(35, 35, 35, 0.32), rgba(35, 35, 35, 0));
  pointer-events: none;
}

/* print: hairlines, Neue Haas, a line drawing; Manila ink on black stock */
.jk-face p, .jk-face li { margin: 0; max-width: none; }
.jk-face ol { margin: 0; padding: 0; list-style: none; }
.jk-rule { position: absolute; left: 5.5%; right: 5.5%; height: 0; border-top: 1px solid var(--jk-ink); }
.jk-front .jk-pigeon { position: absolute; left: 19.2%; top: 4.8%; width: 80%; height: auto; }
.jk-kicker { position: absolute; left: 5.5%; top: 5.6%; font: 400 calc(var(--s) * 0.0262)/1 var(--font-text); }
.jk-title { position: absolute; left: 5%; top: 8.4%; font: 700 calc(var(--s) * 0.1)/0.98 var(--font-display); letter-spacing: -0.025em; }
.jk-office { position: absolute; left: 5.5%; top: 70.6%; font: 400 calc(var(--s) * 0.0415)/1.18 var(--font-text); }
.jk-note { position: absolute; left: 5.5%; top: 85.4%; font: 400 calc(var(--s) * 0.0172)/1.3 var(--font-text); }

.jk-back .jk-seal { position: absolute; left: 5.5%; top: 7%; width: 15%; }
.jk-back .jk-seal .logo, .jk-back .jk-mark .logo { display: block; width: 100%; height: auto; }
.jk-cat { position: absolute; right: 5.5%; top: 7.4%; font: 700 calc(var(--s) * 0.05)/1 var(--font-text); }
.jk-back-title { position: absolute; left: 5.5%; right: 5.5%; top: 28.4%; font: 400 calc(var(--s) * 0.04)/1.08 var(--font-display); letter-spacing: -0.02em; }
.jk-back-title b { font-weight: 700; }
.jk-tracks { position: absolute; left: 5.5%; right: 5.5%; top: 46.4%; display: grid; grid-template-columns: 1fr 1fr; gap: 0 calc(var(--s) * 0.04); font: 400 calc(var(--s) * 0.022)/1.55 var(--font-text); }
.jk-tracks b { display: block; font-weight: 700; margin-bottom: 2px; }
.jk-tracks li { display: grid; grid-template-columns: 1.6em 1fr; }
.jk-back .jk-mark { position: absolute; right: 5.5%; top: 85.6%; width: 6%; }
.jk-colophon { position: absolute; left: 5.5%; right: 14%; top: 86%; display: flex; justify-content: space-between; gap: 8px; font: 400 calc(var(--s) * 0.0172)/1.3 var(--font-text); }

@media (max-width: 860px) {
  .jk-stage { --s: 300px; height: 470px; }
  .jk-floor { bottom: 48px; width: 340px; margin-left: -170px; }
}

/* ---------- Pokey the Pigeon: 3D viewer (Google <model-viewer>), turnaround, palette ---------- */
.pk3d { margin: var(--space-16) 0 0; }
.pk3d model-viewer {
  display: block; width: 100%; height: 640px;
  background: linear-gradient(180deg, #A9A9A9 0%, #C9C9C9 62%, #D6D6D6 100%);
  --poster-color: transparent; --progress-bar-color: var(--color-black-100);
}
.pk3d model-viewer:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: -2px; }
.turnaround { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.turnaround figure { margin: 0; }
.turnaround img { display: block; width: 100%; height: auto; background: linear-gradient(180deg, #A9A9A9 0%, #D6D6D6 100%); }
.turnaround figcaption { padding-top: var(--space-8); font: var(--text-caption); color: var(--color-text-secondary); }
.char-palette { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--space-8); margin: var(--space-16) 0 var(--space-8); }
.char-palette figure { margin: 0; font: var(--text-caption); }
.char-palette span { display: block; aspect-ratio: 1; margin-bottom: var(--space-8); box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
.char-palette b { display: block; font: var(--text-label-s); }
.char-palette code { font-size: 0.6875rem; }
@media (max-width: 860px) {
  .pk3d model-viewer { height: 460px; }
  .turnaround { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-16); }
  .char-palette { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* illustration galleries (Pokey, supporting characters) */
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--grid-gutter, 24px); margin: var(--space-16) 0 var(--space-24); }
.gallery figure { margin: 0; }
.gallery img { display: block; width: 100%; height: auto; aspect-ratio: 1; box-shadow: 0 0 0 1px var(--color-border-subtle); }
.gallery figcaption { display: flex; justify-content: space-between; gap: var(--space-16); padding-top: var(--space-8); font: var(--text-caption); color: var(--color-text-secondary); }
.gallery--hero { grid-template-columns: 1fr; }
.char-palette--brand span { box-shadow: inset 0 0 0 1px var(--color-border-subtle); }
@media (max-width: 860px) { .gallery { grid-template-columns: 1fr; } }
.pk-controls { align-items: center; margin: var(--space-12) 0 0; }
.pk-controls + .pk-controls { margin-bottom: var(--space-24); }
.pk-label { width: 48px; font: var(--text-label-s); color: var(--color-text-muted); }
.pk-controls .doi-button[aria-pressed="true"] { background: var(--color-bg-inverse); color: var(--color-text-inverse); }
@media (max-width: 860px) { .pk-label { width: 100%; } }