:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1d2128;
  --muted: #5b6270;
  --rule: #e4e1da;
  --accent: #1f5f73;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --surface: #1b1f26;
    --text: #e7e9ee;
    --muted: #9aa2b1;
    --rule: #2c323c;
    --accent: #7cc3d6;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

.hero { padding: 72px 0 40px; border-bottom: 1px solid var(--rule); }
.eyebrow {
  margin: 0 0 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent);
}
h1 { font: 600 clamp(36px, 7vw, 52px)/1.1 var(--serif); margin: 0 0 16px; letter-spacing: -.01em; }
.lede { font-size: 18px; color: var(--muted); margin: 0 0 28px; max-width: 60ch; }
.toc { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.toc a { color: var(--text); text-decoration: none; font-size: 14px; font-weight: 500; border-bottom: 1px solid var(--rule); }
.toc a:hover { color: var(--accent); border-color: var(--accent); }

section { padding: 44px 0 8px; border-bottom: 1px solid var(--rule); scroll-margin-top: 16px; }
section:last-of-type { border-bottom: 0; }
h2 { font: 600 26px/1.2 var(--serif); margin: 0 0 22px; }
h3 { font-size: 16px; font-weight: 600; margin: 0; }
h3.sub { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 0 6px; }

.entry { margin-bottom: 26px; }
.entry-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.when { font-size: 14px; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.role { margin: 2px 0 6px; color: var(--muted); font-size: 15px; font-style: italic; }
.org { margin: -10px 0 20px; color: var(--muted); }
.entry p { margin: 4px 0; }
ul { margin: 6px 0; padding-left: 20px; }
li { margin: 4px 0; }

.refs { padding-left: 22px; }
.refs li { margin: 0 0 12px; }
.note { font-size: 14px; color: var(--muted); }

details { margin: 18px 0 30px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }
summary { cursor: pointer; padding: 12px 16px; font-weight: 600; }
details[open] summary { border-bottom: 1px solid var(--rule); }
details > :not(summary) { padding: 0 16px; }
details .refs { padding-left: 38px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 28px; }

a { color: var(--accent); }
.foot { padding: 32px 20px 48px; font-size: 13px; color: var(--muted); }