/* The document sets the rhythm; small islands support notes and source reading. */
:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #000000;
  --quiet: #333333;
  --rule: #e0e0e0;
  --teal: #008080;
  --olive: #6b8e23;
  --ochre: #cc7722;
  --burgundy: #800020;
  --unit: 30px;
  --curve: 8px;
}
* { box-sizing: border-box; }
html { font-family: "Manrope", "Avenir", sans-serif; font-size: 16px; scroll-behavior: auto; }
body { margin: 0; background: var(--paper); color: var(--ink); line-height: 1.6; font-weight: 400; }
main, section, article, aside, div, fieldset { min-width: 0; }
h1, h2, h3 { line-height: 1.13; font-weight: 700; letter-spacing: -0.045em; text-wrap: balance; }
h1 { font-size: clamp(2.65rem, 5.2vw, 5.25rem); margin: 22px 0 30px; max-width: 15ch; }
h2 { font-size: clamp(1.65rem, 2.7vw, 2.5rem); margin: 0 0 24px; max-width: 28ch; }
h3 { font-size: 1.3rem; margin: 0 0 18px; letter-spacing: -0.025em; }
p, ul, ol, dl { margin: 0 0 22px; max-width: 72ch; }
li { margin-bottom: 12px; }
ul, ol { padding-left: 24px; }
a { color: inherit; text-underline-offset: 0.25em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
p a, li a { display: inline-flex; align-items: center; min-height: 44px; }
button, input, textarea, select, summary { font: inherit; font-size: 1rem; }
button, summary { cursor: pointer; }
button { min-height: 48px; padding: 10px 20px; border: 1px solid var(--ink); border-radius: var(--curve); background: var(--paper); color: var(--ink); }
button:hover { background: #f3f3f3; }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; }
img { display: block; width: 100%; height: auto; }
figure { margin: 0; }
figcaption { font-size: 1rem; color: var(--quiet); }
hr { border: 0; border-top: 1px solid var(--rule); margin: 30px 0; }
strong { font-weight: 700; }
textarea { width: 100%; max-width: 100%; min-height: 104px; resize: vertical; border: 1px solid #888888; border-radius: var(--curve); padding: 14px 16px; color: var(--ink); background: var(--paper); line-height: 1.6; }
label { display: block; }
fieldset { margin: 0; }
legend { max-width: 100%; font-size: 1.3rem; font-weight: 700; letter-spacing: -0.025em; line-height: 1.35; padding: 0 10px 0 0; }
summary { min-height: 48px; }
details > summary::marker { font-size: 1rem; }
::selection { background: #e0e0e0; }
.skip { position: fixed; top: 12px; left: 12px; z-index: 10; padding: 12px 22px; background: var(--ink); color: var(--paper); transform: translateY(-160%); }
.skip:focus { transform: translateY(0); }
.frame { display: grid; grid-template-columns: 255px minmax(0, 1fr); min-height: 100vh; }
.rail { position: sticky; top: 0; height: 100dvh; border-right: 1px solid var(--rule); padding: 30px 22px 30px 30px; display: flex; flex-direction: column; }
.wordmark { display: block; font-size: 1.22rem; line-height: 1.3; text-decoration: none; font-weight: 700; letter-spacing: -0.025em; min-height: 70px; padding-bottom: 20px; border-bottom: 1px solid var(--rule); flex-shrink: 0; }
.wordmark span { display: block; font-size: 1rem; font-weight: 400; letter-spacing: 0; margin-top: 4px; color: var(--quiet); }
.side-index { margin-top: 24px; overflow-y: auto; scrollbar-width: thin; min-height: 0; flex: 1; }
.index-toggle { display: none; }
.index-group { margin-bottom: 24px; }
.index-group p { color: var(--quiet); font-size: 1rem; font-weight: 500; letter-spacing: 0.02em; margin: 0 0 6px; }
.index-group ul { list-style: none; padding: 0; margin: 0; }
.index-group li { margin: 0; }
.index-group a { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 7px 8px; margin-left: -8px; font-size: 1rem; text-decoration: none; border-radius: var(--curve); }
.index-group a:hover { background: #f5f5f5; }
.index-group a[aria-current="page"] { font-weight: 700; background: #f1f1f1; }
.index-group a[aria-current="page"]::before { content: ""; width: 5px; height: 5px; background: var(--ink); border-radius: 50%; flex-shrink: 0; }
.canvas { padding: 30px 60px 0; max-width: 1395px; width: 100%; margin: 0 auto; }
.topline { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-bottom: 28px; border-bottom: 1px solid var(--rule); }
.label { font-size: 1rem; font-weight: 500; letter-spacing: 0.02em; color: var(--quiet); }
.topline p { margin: 0; }
.topline a { min-height: 44px; display: flex; align-items: center; text-decoration: none; font-size: 1rem; }
.mast { padding: 55px 0 50px; }
.mast .lead { font-size: 1.125rem; max-width: 54ch; margin-bottom: 26px; }
.home-mast { display: grid; grid-template-columns: minmax(0, 1.24fr) minmax(0, 0.9fr); column-gap: 30px; align-items: center; padding-bottom: 30px; }
.home-mast h1 { max-width: 12ch; }
.home-mast .lead { font-size: 1.125rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.action { display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 52px; padding: 13px 18px; border: 1px solid var(--ink); border-radius: var(--curve); text-decoration: none; }
.action.primary { background: var(--ink); color: var(--paper); }
.art { position: relative; min-height: 300px; display: grid; place-items: center; margin: 0; background: var(--paper); overflow: hidden; }
.art img { object-fit: contain; }
.art figcaption { position: absolute; bottom: 12px; left: 15px; right: 15px; padding: 13px 15px; border: 1px solid var(--rule); border-radius: var(--curve); background: var(--paper); opacity: 0; transition: opacity 300ms ease-in-out; pointer-events: none; }
.art:hover figcaption, .art:focus-within figcaption { opacity: 1; }
.art-placeholder { position: relative; display: grid; place-items: center; width: 100%; aspect-ratio: 1; }
.art-placeholder::before, .art-placeholder::after { content: ""; position: absolute; width: 50%; height: 50%; border: 1px solid #000000; border-radius: 50% 50% 8px 8px; transform: rotate(-18deg); }
.art-placeholder::after { width: 36%; height: 36%; border-color: var(--teal); transform: rotate(19deg); }
.art-placeholder img { position: relative; z-index: 1; }
.art-placeholder img:not([src]) { display: none; }
.art-placeholder.is-pending img { visibility: hidden; }
.paired-mast { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr); gap: 30px; align-items: center; }
.paired-mast .art { min-height: 200px; }
.band { padding: 40px 0; border-top: 1px solid var(--rule); }
.band:first-child { border-top: 0; }
.short { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 30px; }
.short h2 { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.025em; line-height: 1.35; }
.short p { font-size: 1.125rem; margin-bottom: 16px; }
.short p:last-child { margin-bottom: 0; }
.depth { max-width: 850px; }
.depth p:last-child { margin-bottom: 0; }
.art-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 30px; }
.tile { grid-column: span 3; border: 1px solid var(--rule); border-radius: var(--curve); padding: 30px; display: flex; flex-direction: column; align-items: start; min-height: 238px; }
.tile:first-child { grid-column: span 4; }
.tile:nth-child(2) { grid-column: span 2; }
.tile p { margin-bottom: 25px; color: var(--quiet); }
.tile a { margin-top: auto; display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 48px; gap: 16px; text-decoration: none; border-top: 1px solid var(--rule); padding-top: 14px; }
.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
.evidence-card { border: 1px solid var(--rule); border-radius: var(--curve); overflow: hidden; }
.evidence-card > summary { list-style: none; display: flex; flex-direction: column; min-height: 200px; padding: 26px 30px; }
.evidence-card > summary::-webkit-details-marker { display: none; }
.evidence-card > summary strong { font-size: 1.35rem; letter-spacing: -0.025em; line-height: 1.25; margin: 16px 0 22px; }
.evidence-card > summary .open-label { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 1rem; margin-top: auto; width: 100%; }
.evidence-card > summary:hover { background: #f8f8f8; }
.evidence-card[open] > summary { border-bottom: 1px solid var(--rule); }
.source-note { padding: 26px 30px; }
.source-note h3 { margin-top: 12px; }
.source-note p { font-size: 1rem; }
.source-note a { min-height: 48px; display: flex; align-items: center; border-top: 1px solid var(--rule); padding-top: 14px; margin-top: 20px; font-size: 1rem; overflow-wrap: anywhere; }
.worksheet { padding: 30px; border: 1px solid var(--rule); border-radius: var(--curve); margin-top: 30px; }
.worksheet > p { color: var(--quiet); }
.write-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 30px; }
.write-grid label { font-weight: 500; letter-spacing: 0.02em; font-size: 1rem; }
.write-grid label textarea { display: block; font-weight: 400; letter-spacing: 0; margin-top: 10px; }
.write-grid .wide { grid-column: 1 / -1; }
.checks { list-style: none; padding: 0; margin: 0; max-width: none; }
.checks li { margin: 0; border-bottom: 1px solid var(--rule); }
.checks li:last-child { border-bottom: 0; }
.checks label { display: flex; align-items: start; gap: 15px; padding: 16px 0; min-height: 54px; font-size: 1rem; }
.checks input { width: 40px; height: 40px; min-width: 40px; flex-shrink: 0; margin: 0; accent-color: var(--ink); }
.plain-list { padding-left: 24px; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
.pair > article { border: 1px solid var(--rule); border-radius: var(--curve); padding: 30px; }
.pair label { margin-bottom: 22px; font-size: 1rem; }
.pair textarea { margin-top: 10px; }
.callout { border-left: 2px solid var(--ink); padding: 0 0 0 28px; margin: 32px 0; max-width: 72ch; }
.callout h3 { margin-bottom: 12px; }
.question-block { padding: 30px 0; border-bottom: 1px solid var(--rule); }
.question-block:first-child { padding-top: 0; }
.question-block:last-child { border-bottom: 0; }
.next { display: flex; justify-content: space-between; gap: 30px; align-items: center; border-top: 1px solid var(--rule); margin-top: 30px; padding: 30px 0; }
.next p { margin: 0; color: var(--quiet); }
.next a { min-height: 52px; display: inline-flex; align-items: center; gap: 30px; text-decoration: none; font-weight: 700; }
footer { border-top: 1px solid var(--rule); padding: 30px 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: start; }
footer p { margin: 0; font-size: 1rem; max-width: 65ch; color: var(--quiet); }
footer a { min-height: 48px; display: flex; align-items: center; font-size: 1rem; }
dialog { padding: 30px; width: min(620px, 100%); height: 100dvh; max-height: none; margin: 0 0 0 auto; max-width: 100%; border: 0; border-left: 1px solid var(--rule); color: var(--ink); background: var(--paper); overflow-y: auto; }
dialog::backdrop { background: rgb(0 0 0 / 25%); }
dialog header { display: flex; align-items: center; justify-content: space-between; gap: 30px; border-bottom: 1px solid var(--rule); padding-bottom: 25px; margin-bottom: 30px; }
dialog h2 { font-size: 1.75rem; margin: 0; }
dialog .source-note { padding: 0; }
.drawer-title { font-size: 2.2rem; margin: 0 0 30px; }
[hidden] { display: none !important; }
@media (min-width: 1700px) { .canvas { padding-left: 90px; padding-right: 90px; } }
@media (max-width: 1140px) {
  .frame { grid-template-columns: 230px minmax(0, 1fr); }
  .rail { padding-left: 25px; padding-right: 18px; }
  .canvas { padding-left: 30px; padding-right: 30px; }
  .home-mast, .paired-mast { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); }
  .short { grid-template-columns: 120px minmax(0, 1fr); }
  .tile:first-child, .tile:nth-child(2) { grid-column: span 3; }
}
@media (max-width: 800px) {
  .frame { display: block; }
  .rail { position: static; height: auto; padding: 24px 30px 0; border-right: 0; border-bottom: 1px solid var(--rule); display: block; }
  .wordmark { min-height: 60px; padding-bottom: 20px; }
  .side-index { margin-top: 0; overflow: visible; display: none; padding: 16px 0 10px; }
  .index-toggle { display: block; }
  .index-toggle > summary { display: flex; min-height: 56px; align-items: center; justify-content: space-between; font-weight: 500; letter-spacing: 0.02em; list-style: none; }
  .index-toggle > summary::-webkit-details-marker { display: none; }
  .index-toggle > summary::after { content: "+"; font-size: 1.5rem; font-weight: 400; }
  .index-toggle[open] > summary::after { content: "−"; }
  .index-toggle[open] + .side-index { display: block; }
  .side-index > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px 30px; }
  .canvas { padding-top: 22px; }
  .mast { padding-top: 36px; }
  .topline { gap: 14px; padding-bottom: 20px; }
  .home-mast, .paired-mast { grid-template-columns: 1fr; }
  .home-mast h1 { max-width: 13ch; }
  .home-mast .art { min-height: 0; max-width: 420px; margin: 20px auto 0; }
  .home-mast .art-placeholder { max-height: 320px; aspect-ratio: 4 / 3; }
  .paired-mast .art { max-width: 320px; min-height: 0; margin: 0 auto; }
  .paired-mast .art-placeholder { max-height: 250px; }
  .short { grid-template-columns: 1fr; gap: 12px; }
  .short h2 { margin-bottom: 0; }
  .evidence-grid { grid-template-columns: 1fr; }
  .band { padding-top: 30px; padding-bottom: 30px; }
  footer { grid-template-columns: 1fr; gap: 18px; }
}
@media (max-width: 540px) {
  h1 { font-size: 2.8rem; }
  .topline { align-items: start; }
  .topline > a { padding: 0; }
  .art-grid { grid-template-columns: 1fr; gap: 22px; }
  .tile, .tile:first-child, .tile:nth-child(2) { grid-column: auto; min-height: 210px; }
  .write-grid, .pair { grid-template-columns: 1fr; }
  .write-grid .wide { grid-column: auto; }
  .worksheet { padding: 24px 20px; }
  .tile, .pair > article { padding: 26px 24px; }
  .evidence-card > summary, .source-note { padding: 24px; }
  .next { display: block; padding: 26px 0; }
  .next p { margin-bottom: 12px; }
  .next a { justify-content: space-between; width: 100%; gap: 20px; }
  .side-index > div { display: block; }
  dialog { padding: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .frame { display: block; }
  .rail, .topline, .actions, .art, .next, footer, .skip, dialog { display: none; }
  .canvas { padding: 0; width: 100%; max-width: none; }
  .mast { padding: 0 0 20px; }
  h1 { font-size: 2.4rem; max-width: none; }
  .worksheet, .pair > article, .evidence-card { break-inside: avoid; }
  textarea { min-height: 100px; border-color: #999999; }
  .checks input { appearance: none; border: 1px solid #000000; }
  .checks input:checked::after { content: "✓"; display: block; line-height: 38px; text-align: center; }
  .art-grid, .evidence-grid { display: block; }
  .tile, .evidence-card { margin-bottom: 20px; }
  .band { padding: 24px 0; }
}