:root {
  color-scheme: light;
  --cream: #fcf8f1;
  --paper: #fffefa;
  --ink: #292621;
  --muted: #635e55;
  --cobalt: #2449b9;
  --cobalt-deep: #19348a;
  --cornflower-wash: #e9effc;
  --plate-edge: #c3ceeb;
  --input-edge: #7c88ab;
  --display: "Bodoni 72", "Bodoni MT", Didot, "Times New Roman", serif;
  --text: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --humanist: Optima, Candara, "Trebuchet MS", sans-serif;
  --s-label: 1rem;
  --s-ui: 1.0625rem;
  --s-body: 1.3125rem;
  --s-deck: 1.5rem;
  --s-mast: 2rem;
  --s-shelf: 2rem;
  --s-section: clamp(1.875rem, 2.8vw, 2.625rem);
  --s-hero: clamp(2.8rem, 5.8vw, 5.25rem);
  --s-carry: clamp(1.75rem, 2.2vw, 2.125rem);
  --s-plate: clamp(2rem, 3vw, 2.75rem);
  --s-margin: 1.75rem;
  --line-body: 1.65;
  --line-display: 1.04;
  --line-label: 1.45;
  --space-tiny: .375rem;
  --space-small: .75rem;
  --space-base: 1rem;
  --space-prose: 1.5rem;
  --space-panel: 2rem;
  --space-large: 3rem;
  --space-wide: 4rem;
  --space-section: 6rem;
  --radius-panel: 24px;
  --radius-inner: 18px;
  --radius-pill: 100px;
  --tap: 48px;
  --stroke: 1px;
  --stroke-strong: 2px;
  --measure-page: 1192px;
  --measure-prose: 66ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }
html { scroll-padding-top: var(--space-panel); }
body { margin: 0; font-size: var(--s-body); line-height: var(--line-body); }
button, textarea, summary { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: var(--cornflower-wash); }
a { color: var(--cobalt); text-underline-offset: .2em; text-decoration-thickness: var(--stroke); }
a:hover { color: var(--cobalt-deep); }
button { cursor: pointer; }
button:disabled { cursor: default; }
button:focus-visible, summary:focus-visible, a:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--cobalt);
  outline-offset: 5px;
}
p, h1, h2, h3, figure { margin: 0; }
ul { padding-left: var(--space-prose); }
::selection { background: var(--plate-edge); color: var(--ink); }

.paper-cream { background-color: var(--cream); }
.paper-white { background-color: var(--paper); }
.ink-body { color: var(--ink); }
.ink-blue { color: var(--cobalt); }
.type-text { font-family: var(--text); }
.type-display { font-family: var(--display); font-weight: 400; }
.weight-bold { font-weight: 700; }
.size-label { font-family: var(--humanist); font-size: var(--s-label); line-height: var(--line-label); }
.size-mast { font-size: var(--s-mast); line-height: 1.05; }
.size-hero { font-size: var(--s-hero); line-height: var(--line-display); letter-spacing: -.025em; max-width: 18ch; text-wrap: balance; }
.size-section { font-size: var(--s-section); line-height: 1.12; text-wrap: balance; }
.size-shelf { font-size: var(--s-shelf); line-height: 1.15; }
.size-deck { font-size: var(--s-deck); line-height: 1.45; }
.size-carry { font-size: var(--s-carry); line-height: 1.16; text-wrap: balance; }
.size-plate { font-size: var(--s-plate); line-height: 1.15; text-wrap: balance; }
.size-margin { font-size: var(--s-margin); line-height: 1.2; }
.measure-wide { max-width: var(--measure-page); margin-inline: auto; }
.measure-copy { max-width: var(--measure-prose); min-width: 0; }
.gutter-inline { padding-inline: var(--gutter); }
.round-panel { border-radius: var(--radius-panel); }
.round-inner { border-radius: var(--radius-inner); }
.pill-shape { border-radius: var(--radius-pill); }
.list-reset { margin: 0; padding: 0; list-style: none; }
.space-mast { padding-block: var(--space-panel); }
.space-intro { padding-top: var(--space-prose); }
.space-deck { margin-top: var(--space-prose); }
.space-article { margin-top: var(--space-large); }
.space-chapter { margin-top: var(--space-large); }
.space-plate { margin-block: var(--space-large); }
.space-caption { margin-top: var(--space-base); }
.space-group { margin-bottom: var(--space-small); }
.space-next { margin-block: var(--space-large) var(--space-section); }
.space-shelf { padding-block: var(--space-wide); }
.space-notes { margin-block: var(--space-section); }
.space-footer { padding-bottom: var(--space-large); }
.pad-notes { padding: var(--space-panel); }
.label-block { display: block; }

.tap-block { display: inline-flex; align-items: center; min-height: var(--tap); padding-block: var(--space-small); }
.tap-pill { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-small); min-height: var(--tap); padding: var(--space-small) var(--space-prose); font-family: var(--humanist); font-size: var(--s-ui); line-height: var(--line-label); text-align: center; text-decoration: none; }
.tap-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-base); min-height: var(--tap); padding-block: var(--space-base); }
.outline-blue { border: var(--stroke-strong) solid var(--cobalt); color: var(--cobalt); background: transparent; }
.outline-blue:hover { background: var(--cornflower-wash); }
.fill-blue { border: var(--stroke-strong) solid var(--cobalt); color: var(--paper); background: var(--cobalt); }
.fill-blue:hover { border-color: var(--cobalt-deep); color: var(--paper); background: var(--cobalt-deep); }
.link-quiet { text-decoration: none; }
.link-quiet:hover { text-decoration: underline; }
.skip-link { position: absolute; top: var(--space-base); left: var(--space-base); transform: translateY(-200%); z-index: 10; padding: var(--space-base); background: var(--paper); }
.skip-link:focus { transform: translateY(0); }

.mast-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-panel); }
.mast-name { flex-direction: column; align-items: flex-start; gap: var(--space-tiny); color: var(--ink); }
.mast-actions { display: flex; align-items: center; gap: var(--space-small); }
.topic-disclosure { position: relative; }
.topic-disclosure summary { list-style: none; cursor: pointer; }
.topic-disclosure summary::-webkit-details-marker { display: none; }
.topic-popover { position: absolute; z-index: 5; right: 0; top: calc(100% + var(--space-small)); width: min(640px, calc(100vw - 2 * var(--gutter))); max-height: 75vh; overflow-y: auto; overscroll-behavior: contain; border: var(--stroke-strong) solid var(--plate-edge); padding: var(--space-panel); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-panel); box-shadow: 0 12px 36px #2449b91a; font-family: var(--humanist); font-size: var(--s-ui); }
.topic-popover a { width: 100%; }
[aria-current="page"] { text-decoration: underline; text-decoration-thickness: var(--stroke-strong); }

.hero-home, .hero-briefing { display: grid; grid-template-columns: minmax(0, 1fr) 294px; align-items: center; gap: var(--space-wide); margin-top: var(--space-base); }
.hero-home > div > p:first-child, .hero-briefing > div > p:first-child { font-family: var(--humanist); font-size: var(--s-label); margin-bottom: var(--space-prose); }
.identity-note { max-width: 58ch; margin-top: var(--space-prose); }
.carry-mount { background: var(--cornflower-wash); padding: var(--space-base); transform: rotate(2deg); }
.carry-paper { background: var(--paper); border: var(--stroke) solid var(--plate-edge); padding: var(--space-prose); }
.carry-paper > p + p { margin-top: var(--space-prose); }
.carry-paper a { font-size: var(--s-label); font-family: var(--humanist); margin-top: var(--space-prose); }
.carry-mount > p { padding: var(--space-base) var(--space-tiny) var(--space-tiny); }
.article-grid { display: grid; grid-template-columns: minmax(0, 760px) minmax(0, 1fr); gap: var(--space-wide); }
.reading-flow > p { margin-top: var(--space-prose); }
.reading-flow > :first-child { margin-top: 0; }
.reading-flow > h2 + p { margin-top: var(--space-base); }
.margin-note { align-self: start; margin-top: var(--space-large); color: var(--muted); font-size: var(--s-label); font-family: var(--humanist); }
.margin-note p + p { margin-top: var(--space-base); }
.margin-note a { margin-top: var(--space-small); }
.cite-pad { display: inline; padding-block: 13px; line-height: 1.85; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.cite-ink { text-decoration-style: dotted; }
.question-indent { padding-left: var(--space-prose); border-left: 3px solid var(--plate-edge); }
.plate-mount { padding: var(--space-panel); background: var(--cornflower-wash); }
.plate-inset { padding: var(--space-large) var(--space-panel); background: var(--paper); border: var(--stroke) solid var(--plate-edge); }
.next-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-prose); }
.next-row > a { max-width: 100%; }

.shelf-wash { background: var(--cornflower-wash); }
.shelf-columns { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-panel); margin-top: var(--space-panel); }
.shelf-group { min-width: 0; }
.shelf-group > p { font-size: var(--s-ui); min-height: 4.5em; margin-block: var(--space-base); }
.shelf-link { font-family: var(--humanist); font-size: var(--s-ui); text-decoration: none; border-top: var(--stroke) solid var(--plate-edge); }
.shelf-link:hover { text-decoration: underline; }
.notes-layout { border: var(--stroke) solid var(--plate-edge); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-wide); }
.notes-layout h2 { margin-block: var(--space-base) var(--space-prose); }
.notes-layout p + p { margin-top: var(--space-base); }
.notes-layout label { font-family: var(--humanist); font-size: var(--s-ui); margin-bottom: var(--space-small); }
.notes-input { display: block; resize: vertical; width: 100%; max-width: 100%; min-height: 190px; border: var(--stroke-strong) solid var(--input-edge); padding: var(--space-base); background: var(--cream); color: var(--ink); font-size: var(--s-body); line-height: 1.45; }
.notes-input::placeholder { color: var(--muted); opacity: 1; }
.notes-actions { display: flex; flex-wrap: wrap; gap: var(--space-small); margin-block: var(--space-base); }
.footer-row { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-small) var(--space-panel); margin-top: var(--space-base); font-family: var(--humanist); font-size: var(--s-label); }
.space-footer > p { max-width: var(--measure-prose); font-size: var(--s-ui); }

@media (max-width: 1000px) {
  .hero-home, .hero-briefing { grid-template-columns: minmax(0, 1fr) 250px; gap: var(--space-panel); }
  .article-grid { grid-template-columns: minmax(0, 1fr); }
  .margin-note { display: none; }
  .shelf-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: var(--space-large); }
  .shelf-group > p { min-height: 0; }
  .notes-layout { gap: var(--space-panel); }
}

@media (max-width: 740px) {
  :root { --space-section: 4rem; --s-body: 1.25rem; --s-deck: 1.3125rem; }
  .mast-row { align-items: flex-start; gap: var(--space-base); padding-block: var(--space-prose); }
  .mast-name { padding-block: 0; }
  .mast-actions { align-items: flex-end; flex-direction: column-reverse; gap: var(--space-tiny); }
  .mast-actions > a { border-color: transparent; min-height: 44px; padding: var(--space-tiny) var(--space-base); }
  .topic-disclosure summary { padding-inline: var(--space-base); }
  .topic-popover { top: calc(100% + var(--space-base)); padding: var(--space-prose); gap: var(--space-prose); }
  .hero-home, .hero-briefing { grid-template-columns: minmax(0, 1fr); gap: var(--space-large); }
  .hero-home .carry-mount, .hero-briefing .carry-mount { transform: none; max-width: 100%; }
  .carry-paper { padding: var(--space-prose); }
  .carry-paper a { margin-top: var(--space-small); }
  .carry-mount > p { padding-bottom: var(--space-tiny); }
  .space-intro { padding-top: var(--space-small); }
  .size-hero { max-width: 19ch; }
  .identity-note { font-size: var(--s-body); }
  .plate-mount { padding: var(--space-prose); }
  .plate-inset { padding: var(--space-panel) var(--space-prose); }
  .notes-layout { grid-template-columns: minmax(0, 1fr); }
  .pad-notes { padding: var(--space-prose); }
  .next-row { align-items: stretch; flex-direction: column; }
  .next-row .tap-pill { align-self: flex-start; }
}

@media (max-width: 430px) {
  :root { --s-mast: 1.65rem; --s-ui: 1rem; }
  .shelf-columns { grid-template-columns: minmax(0, 1fr); }
  .topic-popover { grid-template-columns: minmax(0, 1fr); }
  .mast-name .size-label { max-width: 15ch; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}

@media print {
  :root { --ink: #111; --cobalt: #222; --cream: white; --cornflower-wash: #f4f4f4; --paper: white; }
  .mast-actions, .shelf-wash, .space-next, .footer-row, .skip-link, .notes-actions { display: none; }
  .hero-home, .hero-briefing, .article-grid, .notes-layout { display: block; }
  .carry-mount { transform: none; margin-block: var(--space-panel); }
  .plate-mount { break-inside: avoid; }
  .size-hero { font-size: 3rem; }
  a { text-decoration: underline; }
}