*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 1.25rem; }
body { margin: 0; }
[hidden] { display: none !important; }
.page-shell { width: min(100% - 2.6667rem, 72rem); margin-inline: auto; }
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.3333rem; }
.masthead__purpose { margin: 0; }
.crumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0 .5rem; list-style: none; padding: .5rem 0; margin: 0; }
.crumbs__item { display: flex; align-items: center; min-width: 0; }
.crumbs__item + .crumbs__item::before { content: '/'; padding-inline-end: .5rem; }
.crumbs__link, .crumbs__current { display: flex; align-items: center; min-height: 44px; padding: .5rem .625rem; }
.lead { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-block: 1.5rem 2rem; }
.lead__copy { min-width: 0; max-width: 46rem; }
.lead__heading { max-width: 24ch; margin: .5rem 0 1rem; }
.lead__text, .lead__identity { max-width: 65ch; margin-block: .75rem; }
.lead__eyebrow { margin: 0; }
.illustration { margin: 0; min-width: 0; }
.illustration__asset { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; padding: .75rem; }
.illustration__caption { margin-top: .75rem; max-width: 48ch; }
.reading-layout { display: grid; grid-template-columns: minmax(0, 16rem) minmax(0, 1fr); gap: 1rem; align-items: start; }
.reading-layout__rail { min-width: 0; position: sticky; top: 1rem; }
.reading-layout__article { min-width: 0; }
.jump-menu { padding: 1rem; }
.jump-menu__summary { min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: .5rem; cursor: pointer; }
.jump-menu__summary::after { content: '+'; }
.jump-menu[open] > .jump-menu__summary::after { content: '−'; }
.jump-menu__summary::-webkit-details-marker { display: none; }
.jump-menu__summary::marker { content: ''; }
.jump-menu__form { display: grid; gap: .75rem; padding-block: 1rem .5rem; }
.jump-menu__label { display: block; }
.jump-menu__select { width: 100%; max-width: 100%; min-width: 0; min-height: 48px; padding: .625rem .5rem; }
.jump-menu__button { min-height: 48px; padding: .625rem 1rem; width: 100%; cursor: pointer; }
.jump-menu__fallback { list-style: none; margin: .5rem 0; padding: 0; }
.jump-menu__link, .jump-menu__source-link { display: flex; align-items: center; min-height: 44px; padding: .75rem .5rem; }
.note { padding: 1.3333rem 1.5rem; margin-bottom: 1rem; scroll-margin-top: 1.25rem; }
.note__heading { margin: 0 0 .75rem; max-width: 45ch; }
.note__text { margin: .75rem 0; max-width: 68ch; }
.note__links { display: grid; gap: .5rem; }
.note__links:empty { display: none; }
.note-link { display: flex; align-items: center; justify-content: space-between; gap: .75rem; min-height: 48px; padding: .75rem; }
.note-link__arrow { flex: 0 0 auto; }
.source-mark { display: inline-flex; align-items: center; justify-content: center; vertical-align: middle; min-width: 44px; min-height: 44px; margin-left: .25rem; }
.question { margin-block: 1rem; padding: 1rem; }
.question__label { margin: 0 0 .5rem; }
.question__text { margin: 0; max-width: 62ch; }
.route-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.route-list__group { min-width: 0; padding: 1rem; }
.route-list__heading { margin: 0 0 .75rem; }
.sources { padding: 1.3333rem 1.5rem; margin-top: 2rem; }
.sources__heading { margin-top: 0; }
.sources__list { list-style: none; padding: 0; margin-bottom: 0; }
.sources__item { display: grid; grid-template-columns: 2.75rem minmax(0, 1fr); gap: .75rem; padding-block: 1rem; scroll-margin-top: 1.25rem; }
.sources__mark { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; }
.sources__entry { min-width: 0; }
.sources__link, .sources__return { display: flex; align-items: center; min-height: 44px; padding: .5rem; overflow-wrap: anywhere; }
.sources__date { margin: .5rem; }
.footer { margin-top: 3rem; padding: 1.3333rem 0 2rem; }
.footer__description { margin-top: 0; max-width: 68ch; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer__links .note-link { justify-content: flex-start; }
.skip-link { position: absolute; top: .5rem; left: 1.3333rem; z-index: 10; min-height: 44px; padding: .75rem 1rem; transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
@media (min-width: 60rem) {
  .field-guide--home .lead, .lead:has(.illustration) { grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); align-items: start; }
}
@media (max-width: 48rem) {
  .reading-layout { grid-template-columns: minmax(0, 1fr); }
  .reading-layout__rail { position: static; }
  .masthead { display: grid; gap: .5rem; }
  .lead { margin-block: 1rem 1.5rem; }
  .note, .sources { padding: 1.125rem 1rem; }
  .route-list { grid-template-columns: minmax(0, 1fr); }
  .illustration { max-width: 32rem; }
  .illustration__asset { max-height: 15rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  .page-shell { width: 100%; }
  .reading-layout { display: block; }
  .reading-layout__rail, .skip-link, .footer__links { display: none; }
  .note, .question, .sources__item { break-inside: avoid; }
  .note { padding-inline: 0; }
  .illustration { display: none; }
  .source-mark { min-height: auto; min-width: auto; }
}