:root {
  color-scheme: light;
  --ink: #202122;
  --muted: #54595d;
  --link: #36c;
  --line: #a2a9b1;
  --soft: #f8f9fa;
  --blue: #244f82;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--soft); color: var(--ink); font: 1rem/1.65 Arial, Helvetica, sans-serif; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, summary:focus-visible, .table-wrap:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }
h1, h2, h3 { color: var(--ink); line-height: 1.25; }
h1, h2 { font-family: Georgia, 'Times New Roman', serif; font-weight: 400; }
h1 { font-size: 2rem; margin: .25rem 0 1.15rem; padding-bottom: .4rem; border-bottom: 1px solid var(--line); }
h2 { font-size: 1.55rem; margin: 1.8rem 0 .7rem; padding-bottom: .3rem; border-bottom: 1px solid var(--line); }
h3 { font-size: 1.1rem; font-weight: 700; margin: 1.2rem 0 .45rem; }
p { margin: 0 0 .85rem; }
ul, ol { padding-left: 1.65rem; }
li { margin: .2rem 0; }
img { max-width: 100%; height: auto; display: block; }
.skip { position: absolute; left: 1rem; top: -8rem; background: #fff; border: 1px solid var(--link); padding: .65rem; z-index: 10; }
.skip:focus { top: 1rem; }
.masthead { max-width: 1600px; margin: 0 auto; padding: 1.4rem 2.1rem 1.15rem; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; background: #fff; border-bottom: 1px solid #c8ccd1; }
.brand { display: flex; align-items: center; gap: .8rem; color: var(--ink); font: 1.25rem/1.2 Georgia, serif; }
.brand:hover { text-decoration: none; }
.brand small { display: block; font: .8rem/1.4 Arial, sans-serif; color: var(--muted); margin-top: .3rem; }
.brand-mark { background: var(--blue); color: white; display: grid; place-items: center; width: 3.1rem; height: 3.1rem; border-radius: 2px; flex-shrink: 0; font: 1.1rem Georgia, serif; }
.masthead nav { display: flex; gap: 1.45rem; font-size: .875rem; }
.shell { max-width: 1600px; margin: 0 auto; display: grid; grid-template-columns: 202px minmax(0, 1fr); }
.sidebar { padding: 1.6rem 1.5rem; }
.sidebar nav { position: sticky; top: 1.4rem; max-height: calc(100vh - 3rem); overflow-y: auto; }
.nav-heading { font-size: .8rem; color: var(--muted); border-bottom: 1px solid #c8ccd1; padding-bottom: .25rem; margin: 1.1rem 0 .4rem; }
.sidebar a { display: block; font-size: .86rem; line-height: 1.4; padding: .28rem 0; }
.sidebar a[aria-current=page] { font-weight: 700; color: var(--ink); }
.workspace { background: #fff; padding: 1.5rem 2.4rem 3.5rem; min-width: 0; border-left: 1px solid #c8ccd1; border-bottom: 1px solid #c8ccd1; }
.notice { background: var(--soft); border: 1px solid #c8ccd1; color: var(--muted); padding: .42rem .75rem; font-size: .8rem; margin: 0 0 1.1rem; }
.notice.author { background: #fff8e8; border-color: #bda779; }
.eyebrow { color: var(--muted); font-size: .8rem; margin-bottom: .3rem; }
.lede { font-size: 1rem; }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) 312px; gap: 1.8rem; align-items: start; }
.infobox { background: var(--soft); border: 1px solid var(--line); padding: .35rem; font-size: .86rem; line-height: 1.5; }
.infobox h2 { background: #e6edf3; font: 700 1rem/1.4 Arial, sans-serif; text-align: center; border: 0; padding: .6rem .5rem; margin: 0; }
.infobox .subhead { text-align: center; font-size: .78rem; color: var(--muted); padding: .35rem .3rem; }
.infobox dl { margin: .3rem 0 0; }
.infobox dl div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: .4rem; padding: .35rem .35rem; }
.infobox dt { font-weight: 700; }
.infobox dd { margin: 0; overflow-wrap: anywhere; }
.infobox-media { margin: .5rem .3rem .7rem; text-align: center; }
.infobox-media img { border: 1px solid #c8ccd1; width: 100%; }
.infobox-media figcaption { margin-top: .3rem; font-size: .8rem; }
.toc { background: var(--soft); border: 1px solid var(--line); display: table; min-width: 220px; max-width: 100%; padding: .75rem 1rem; margin: 1.2rem 0 1.4rem; font-size: .875rem; line-height: 1.5; }
.toc strong { display: block; text-align: center; margin-bottom: .35rem; }
.toc ol { margin: .25rem 0 0; }
.toc li { padding: .06rem 0; }
.article-body { max-width: 1050px; }
.article-body p { overflow-wrap: anywhere; }
.article-body h2 { margin-top: 1.6rem; }
.article-note { color: var(--muted); font-size: .85rem; }
.wiki-figure { border: 1px solid #c8ccd1; background: var(--soft); padding: .45rem; margin: 1.25rem 0; max-width: 1000px; }
.wiki-figure img { width: 100%; border: 1px solid #eaecf0; }
.wiki-figure figcaption { font-size: .83rem; line-height: 1.5; padding: .5rem .35rem .25rem; }
.figure-download { display: block; margin-top: .3rem; }
.table-wrap { width: 100%; overflow-x: auto; margin: 1rem 0 1.3rem; }
table { border-collapse: collapse; width: 100%; border: 1px solid var(--line); font-size: .9rem; line-height: 1.5; }
th, td { padding: .5rem .65rem; border: 1px solid var(--line); vertical-align: top; text-align: left; }
th { background: #eaecf0; font-weight: 700; }
td { background: var(--soft); }
.table-wrap table { min-width: 450px; }
.article-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .7rem 2rem; }
.topic h3 { border-bottom: 1px solid #c8ccd1; padding-bottom: .3rem; }
.topic ul { margin-top: .35rem; font-size: .9rem; }
.related { margin-top: 1.8rem; }
.related h2 { font: 400 1.5rem Georgia, serif; }
.related ul { columns: 2; font-size: .9rem; }
.section-links { font-size: .85rem; }
.event-list { list-style: none; padding: 0; margin: 1rem 0; }
.event-list li { display: grid; grid-template-columns: 95px minmax(0, 1fr); gap: 0 1rem; padding: .8rem 0; border-bottom: 1px solid #eaecf0; }
.event-date { font-weight: 700; grid-row: 1 / span 2; }
.event-list h3 { margin: 0 0 .25rem; }
.event-list p { margin: 0; }
.all-articles { columns: 2; column-gap: 2.5rem; }
.all-articles section { break-inside: avoid; margin-bottom: 1.5rem; }
.all-articles h2 { font-size: 1.3rem; margin: 0 0 .65rem; }
.all-articles a { display: block; font-size: .9rem; padding: .2rem 0; }
.reference-list p { padding-left: 1.4rem; text-indent: -1.4rem; }
.questionnaire { max-width: 1000px; }
.questionnaire fieldset { border: 0; border-bottom: 1px solid #c8ccd1; margin: 0 0 1.5rem; padding: .5rem 0 1.2rem; min-width: 0; }
.questionnaire legend { font-weight: 700; font-size: 1rem; width: 100%; padding: 0; }
.question-options { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .55rem 1rem; margin-top: .5rem; }
.question-options label { display: flex; gap: .6rem; align-items: flex-start; min-height: 44px; padding: .35rem 0; line-height: 1.5; }
.question-options input { margin-top: .3rem; flex-shrink: 0; width: 1.1rem; height: 1.1rem; accent-color: var(--blue); }
.question-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1rem 0; }
.question-actions button { background: #eaecf0; color: var(--ink); border: 1px solid var(--line); border-radius: 2px; min-height: 44px; padding: .5rem 1rem; font: 1rem Arial,sans-serif; }
.question-actions button:first-child { background: var(--blue); color: #fff; border-color: var(--blue); }
.question-actions button:focus-visible, .question-options input:focus-visible, #answer-text:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }
.answer-label { display: block; font-weight: 700; margin: .5rem 0; }
#answer-text { width: 100%; max-width: 1000px; padding: .75rem; border: 1px solid var(--line); font: 1rem/1.6 monospace; resize: vertical; }
#question-progress { font-weight: 700; color: var(--muted); }
.back-top { margin: 1.8rem 0 0; font-size: .85rem; }
.footer { max-width: 1600px; margin: 0 auto; padding: 1.3rem 2.1rem; font-size: .78rem; line-height: 1.5; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem 1.5rem; }
.footer a { margin-right: 1rem; }
.mobile-nav { display: none; }
@media (min-width: 1450px) { .workspace { padding-left: 3rem; padding-right: 3rem; } }
@media (max-width: 1050px) {
  .shell { grid-template-columns: 175px minmax(0, 1fr); }
  .sidebar { padding: 1.2rem 1rem; }
  .workspace { padding: 1.3rem 1.6rem 3rem; }
  .intro-grid { grid-template-columns: minmax(0, 1fr); gap: .5rem; }
  .infobox { max-width: 500px; margin-bottom: 1rem; }
  .infobox-media { max-width: 310px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 760px) {
  body { font-size: 1rem; }
  .masthead { padding: 1rem; }
  .brand { font-size: 1.05rem; }
  .brand-mark { width: 2.7rem; height: 2.7rem; }
  .masthead nav { display: none; }
  .shell { display: block; }
  .sidebar { display: none; }
  .workspace { border-left: 0; padding: 1.2rem 1rem 2.5rem; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.45rem; }
  .mobile-nav { display: block; padding: .65rem 1rem; border-bottom: 1px solid #c8ccd1; }
  .mobile-nav summary { color: var(--link); font-size: .9rem; cursor: pointer; }
  .mobile-nav nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .35rem 1rem; padding: .75rem 0; }
  .mobile-nav a { font-size: .85rem; }
  .article-grid, .all-articles { display: block; columns: 1; }
  .question-options { grid-template-columns: minmax(0,1fr); }
  .related ul { columns: 1; }
  .toc { width: auto; }
  .table-wrap table { min-width: 500px; }
  .event-list li { grid-template-columns: 75px minmax(0, 1fr); gap: 0 .65rem; }
  .event-date { font-size: .85rem; }
  .footer { padding: 1rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  .masthead, .sidebar, .mobile-nav, .toc, .footer, .related, .back-top, .figure-download { display: none; }
  .shell { display: block; }
  .workspace { border: 0; padding: 0; }
  .intro-grid { grid-template-columns: minmax(0, 1fr) 280px; }
  a { color: inherit; text-decoration: none; }
  .table-wrap { overflow: visible; }
  h1, h2, h3 { break-after: avoid; }
  tr { break-inside: avoid; }
  .wiki-figure { break-inside: avoid; }
}