*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; }
[hidden] { display: none !important; }
img { display: block; max-width: 100%; height: auto; }
button, input { max-width: 100%; }
a, button, summary, input { min-height: 44px; }
a { display: inline-flex; align-items: center; gap: .65rem; }
p, h1, h2, h3, figure, ul, ol, dl { margin: 0; }
p + p { margin-top: 1rem; }
ul, ol { padding-left: 1.3rem; }
li + li { margin-top: .65rem; }
main, [data-role="site-header"], [data-role="site-footer"] {
  width: min(100% - 6rem, 1200px);
  margin-inline: auto;
}
[data-role="skip-link"] { position: fixed; z-index: 20; left: 1rem; top: 1rem; padding: .65rem 1rem; transform: translateY(-220%); }
[data-role="skip-link"]:focus { transform: translateY(0); }
[data-role="site-header"] { display: grid; grid-template-columns: minmax(230px, .85fr) minmax(0, 1.4fr); gap: 3rem; padding-block: 1.6rem; }
[data-role="identity"] { display: flex; align-items: center; gap: 1rem; padding-block: .5rem; }
[data-role="tile-mark"] { display: grid; grid-template-columns: repeat(2, 22px); gap: 3px; flex: 0 0 auto; }
[data-role="tile-mark"] span { width: 22px; height: 22px; }
[data-role="identity-words"] { display: grid; gap: .15rem; }
[data-role="topic-nav"] { display: grid; grid-template-columns: 1fr 1fr; gap: 1.7rem; }
[data-role="topic-cluster"] { display: grid; align-content: start; }
[data-role="topic-cluster"] ul { padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: .25rem .75rem; }
[data-role="topic-cluster"] li { margin: 0; }
[data-role="topic-cluster"] a { padding: .4rem .15rem; }
[data-role="cluster-label"] { padding-bottom: .2rem; }
[data-role="hero"] { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(0, .78fr); gap: 4rem; align-items: center; padding-block: 3.5rem 4rem; }
[data-role="hero-copy"] { min-width: 0; }
[data-role="eyebrow"] { display: block; margin-bottom: 1.15rem; }
h1 { max-width: 17ch; }
[data-role="hero-copy"] > p { max-width: 53ch; margin-top: 1.5rem; }
[data-role="hero-copy"] [data-role="actions"] { margin-top: 1.6rem; }
[data-role="still-life"] { position: relative; min-width: 0; }
[data-role="image-window"] { position: relative; aspect-ratio: 6 / 7; overflow: hidden; }
[data-role="image-window"] > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
[data-role="tile-fallback"] { position: absolute; inset: 0; }
[data-role="still-life"] figcaption { padding: 1rem 1.15rem; }
[data-role="chapter-head"] { max-width: 830px; padding-block: 3.4rem 2.6rem; }
[data-role="chapter-head"] h1 { max-width: 20ch; }
[data-role="chapter-head"] > p { max-width: 62ch; margin-top: 1.3rem; }
[data-role="actions"] { display: flex; align-items: center; flex-wrap: wrap; gap: .6rem 1.2rem; }
[data-role="action-link"] { min-height: 48px; padding: .6rem 1rem; }
[data-role="quick-read"] { padding: 2.7rem 3rem; margin-bottom: 3.7rem; }
[data-layout="split"] { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: 3.5rem; }
[data-layout="split"] h2 { max-width: 16ch; }
[data-role="prose"] { min-width: 0; max-width: 68ch; }
[data-role="prose"] ul, [data-role="prose"] ol { margin-top: 1.1rem; }
[data-role="depth"] { margin-block: 3.5rem; }
[data-role="section-heading"] { max-width: 67ch; margin-bottom: 1.9rem; }
[data-role="section-heading"] h2 { margin-bottom: .9rem; }
[data-role="routes"] { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; }
[data-role="route"] { display: flex; flex-direction: column; align-items: start; padding: 1.75rem; min-width: 0; }
[data-role="route-mark"] { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin-bottom: 1.25rem; }
[data-role="route"] h3 { margin-bottom: .9rem; }
[data-role="route"] p { max-width: 40ch; }
[data-role="route"] [data-role="action-link"] { margin-top: 1.1rem; width: 100%; }
[data-role="route"] details { margin-top: auto; width: 100%; padding-top: 1.2rem; }
[data-role="source-drawer"] { margin-top: 1.2rem; }
[data-role="source-drawer"] summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: 52px; padding: .65rem .1rem; cursor: pointer; list-style: none; }
[data-role="source-drawer"] summary::-webkit-details-marker { display: none; }
[data-role="source-drawer"] summary::after { content: "+"; flex: 0 0 auto; width: 25px; text-align: center; }
[data-role="source-drawer"][open] summary::after { content: "−"; }
[data-role="source-body"] { padding: .7rem 0 1rem; }
[data-role="source-body"] a { padding-block: .5rem; }
[data-role="source-links"] { display: grid; gap: .3rem; margin-top: .6rem; }
[data-role="question-row"] { display: grid; grid-template-columns: minmax(0, .77fr) minmax(0, 1.23fr); gap: 4.2rem; padding-block: 2.4rem; }
[data-role="question-row"] h2 { max-width: 19ch; }
[data-role="question-row"] [data-role="eyebrow"] { margin-bottom: .7rem; }
[data-role="pause-list"] { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem; margin-top: 1.7rem; }
[data-role="pause-list"] h3 { margin-bottom: .85rem; }
[data-role="cost-rows"] { display: grid; gap: 0; }
[data-role="cost-row"] { display: grid; grid-template-columns: minmax(180px, .55fr) minmax(0, 1.45fr); gap: 2rem; padding-block: 1.5rem; }
[data-role="cost-row"] p { max-width: 67ch; }
[data-role="note"] { padding: 1.6rem 1.8rem; margin-top: 2rem; }
[data-role="note"] h3 { margin-bottom: .65rem; }
[data-role="note"] > p { max-width: 68ch; }
[data-role="study"] { padding: 2rem 2.3rem; margin-block: 1.3rem; }
[data-role="study"] > p { max-width: 62ch; }
[data-role="study-result"] { margin-top: 1rem; }
[data-role="caution-grid"] { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; margin-top: 1.5rem; }
[data-role="caution"] { padding: 1.7rem; }
[data-role="caution"] h3 { margin-bottom: .75rem; }
[data-role="wide-still-life"] { margin-block: 3.4rem; }
[data-role="wide-still-life"] [data-role="image-window"] { aspect-ratio: 11 / 5; }
[data-role="wide-still-life"] figcaption { padding-block: .9rem; }
[data-role="glossary-controls"] { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: .8rem; max-width: 660px; margin-block: 1.5rem 1rem; }
[data-role="search-field"] { display: grid; gap: .55rem; }
[data-role="glossary-controls"] input { width: 100%; min-height: 50px; padding: .65rem .9rem; }
[data-role="glossary-controls"] button { min-height: 50px; min-width: 80px; padding: .6rem 1rem; cursor: pointer; }
[data-role="glossary-status"] { min-height: 1.6em; margin-top: 1rem; }
[data-role="glossary-list"] { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 2.5rem; margin-top: 1.5rem; }
[data-role="glossary-entry"] { padding-block: 1.2rem; min-width: 0; }
[data-role="glossary-entry"] dt { margin-bottom: .45rem; }
[data-role="glossary-entry"] dd { margin: 0; max-width: 58ch; }
[data-role="page-next"] { margin-block: 4rem 3rem; padding: 2rem 0; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
[data-role="page-next"] p { max-width: 40ch; }
[data-role="site-footer"] { padding-block: 2rem 2.6rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 3rem; }
[data-role="site-footer"] p { max-width: 60ch; }
[data-role="footer-links"] { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .15rem 1.3rem; align-content: start; }
[data-role="footer-links"] a { min-height: 48px; }
[data-role="not-found"] { max-width: 66ch; padding-block: 5rem 7rem; }
[data-role="not-found"] p { margin-block: 1.6rem; }
@media (max-width: 1050px) {
  main, [data-role="site-header"], [data-role="site-footer"] { width: min(100% - 3rem, 1200px); }
  [data-role="site-header"] { gap: 1.6rem; grid-template-columns: minmax(200px, .65fr) minmax(0, 1.35fr); }
  [data-role="hero"] { gap: 2rem; }
  [data-role="topic-cluster"] ul { display: grid; gap: 0; }
  [data-role="routes"] { grid-template-columns: 1fr; }
  [data-role="route"] { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 0 1.4rem; }
  [data-role="route-mark"] { grid-row: 1 / 5; }
  [data-role="route"] h3, [data-role="route"] p, [data-role="route"] a, [data-role="route"] details { grid-column: 2; }
  [data-role="route"] p { max-width: 67ch; }
  [data-role="route"] [data-role="action-link"] { width: fit-content; }
}
@media (max-width: 720px) {
  main, [data-role="site-header"], [data-role="site-footer"] { width: calc(100% - 2.5rem); }
  [data-role="site-header"] { grid-template-columns: 1fr; gap: 1.1rem; padding-block: 1rem 1.2rem; }
  [data-role="identity"] { padding: 0; }
  [data-role="topic-nav"] { gap: 1.1rem; }
  [data-role="hero"] { grid-template-columns: 1fr; gap: 2rem; padding-block: 2.3rem 2.7rem; }
  [data-role="hero-copy"] > p { margin-top: 1.15rem; }
  [data-role="hero"] [data-role="image-window"] { aspect-ratio: 4 / 3; }
  [data-role="chapter-head"] { padding-block: 2.4rem 2rem; }
  [data-layout="split"], [data-role="question-row"], [data-role="site-footer"] { grid-template-columns: 1fr; gap: 1.35rem; }
  [data-role="quick-read"] { padding: 1.8rem 1.4rem; margin-bottom: 2.4rem; }
  [data-role="depth"] { margin-block: 2.5rem; }
  [data-role="question-row"] { padding-block: 2rem; }
  [data-role="question-row"] h2 { max-width: 100%; }
  [data-role="route"] { padding: 1.3rem; gap: 0 1rem; }
  [data-role="pause-list"], [data-role="caution-grid"], [data-role="glossary-list"] { grid-template-columns: 1fr; }
  [data-role="pause-list"] { gap: 1.4rem; }
  [data-role="cost-row"] { grid-template-columns: 1fr; gap: .65rem; }
  [data-role="study"] { padding: 1.5rem; }
  [data-role="note"] { padding: 1.3rem; }
  [data-role="caution"] { padding: 1.35rem; }
  [data-role="wide-still-life"] { margin-block: 2.5rem; }
  [data-role="page-next"] { flex-direction: column; align-items: start; gap: 1rem; margin-block: 2.5rem 1rem; }
  [data-role="footer-links"] { justify-content: flex-start; gap: .15rem 1rem; }
  [data-role="not-found"] { padding-block: 3rem 4rem; }
}