:root {
  --ink: #1d2733;
  --ink-soft: #4a5663;
  --rule: #d9dee4;
  --paper: #ffffff;
  --paper-alt: #f6f7f9;
  --accent: #1f4e79;
  --accent-soft: #e8eef5;
  --max: 980px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e8ecf1;
    --ink-soft: #b3bcc7;
    --rule: #2e3a47;
    --paper: #121921;
    --paper-alt: #192230;
    --accent: #8fb6dc;
    --accent-soft: #1d2b3a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.site {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 24px; padding-top: 18px; padding-bottom: 18px;
}
.brand { font-size: 20px; color: var(--ink); letter-spacing: 0.2px; }
.brand span { color: var(--ink-soft); }
nav.primary { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 17px; }
nav.primary a { color: var(--ink-soft); }
nav.primary a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--accent); padding-bottom: 2px; }
main { padding: 36px 0 56px; }
h1 { font-size: 36px; line-height: 1.2; margin: 0 0 8px; font-weight: normal; }
h2 { font-size: 24px; line-height: 1.3; margin: 40px 0 12px; font-weight: normal; border-bottom: 1px solid var(--rule); padding-bottom: 6px; }
h3 { font-size: 20px; margin: 26px 0 8px; font-weight: normal; color: var(--ink); }
.kicker { color: var(--ink-soft); font-size: 19px; margin: 0 0 24px; }
.hero { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: start; }
@media (min-width: 720px) { .hero { grid-template-columns: 300px 1fr; } }
.hero img { width: 100%; max-width: 300px; height: auto; display: block; border-radius: 4px; }
.lede { font-size: 20px; }
.facts { background: var(--paper-alt); border: 1px solid var(--rule); border-radius: 4px; padding: 18px 22px; margin: 28px 0; }
.facts dl { margin: 0; display: grid; grid-template-columns: 1fr; gap: 10px 20px; }
@media (min-width: 720px) { .facts dl { grid-template-columns: 170px 1fr; } }
.facts dt { color: var(--ink-soft); font-size: 16px; }
.facts dd { margin: 0; }
ul.pubs, ul.plain { padding-left: 0; list-style: none; margin: 0; }
ul.pubs li { padding: 12px 0; border-bottom: 1px solid var(--rule); }
ul.pubs li:last-child { border-bottom: 0; }
ul.pubs em { font-style: italic; }
.meta { color: var(--ink-soft); font-size: 16px; }
.cols { display: grid; grid-template-columns: 1fr; gap: 0 40px; }
@media (min-width: 720px) { .cols { grid-template-columns: 1fr 1fr; } }
.links { columns: 1; column-gap: 40px; }
@media (min-width: 720px) { .links { columns: 2; } }
.links li { padding: 4px 0; break-inside: avoid; }
footer.site { border-top: 1px solid var(--rule); padding: 26px 0 40px; color: var(--ink-soft); font-size: 16px; }
footer.site .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 30px; }
.note { font-size: 16px; color: var(--ink-soft); }