:root {
  --bg: #fbfbf9;
  --surface: #f1f1ec;
  --text: #16181d;
  --muted: #4a4f5a;
  --line: #d9d9d2;
  --accent: #0a5a8c;
  --accent-text: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #1b1e24;
    --text: #eceae4;
    --muted: #b4b6bc;
    --line: #30343c;
    --accent: #7cc4f2;
    --accent-text: #0b1218;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.skip {
  position: absolute;
  left: -999px;
}
.skip:focus { left: 1rem; top: 1rem; background: var(--bg); padding: 0.5rem; }

header.site {
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); text-decoration: underline; }

main { padding: 2.5rem 0 3rem; }

h1 { font-size: 2.1rem; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; line-height: 1.3; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.05rem; margin: 1.75rem 0 0.5rem; }
p, ul, ol, dl, table { margin: 0 0 1rem; }
li { margin-bottom: 0.35rem; }

.lead { font-size: 1.2rem; color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem 1.25rem 0.25rem;
  margin: 1.5rem 0;
}

.tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  vertical-align: middle;
}

dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.25rem; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }
@media (max-width: 30rem) {
  dl.facts { grid-template-columns: 1fr; gap: 0; }
  dl.facts dd { margin-bottom: 0.6rem; }
}

.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.5rem 0.75rem 0.5rem 0; border-bottom: 1px solid var(--line); }
th { font-weight: 600; }

.small { font-size: 0.9rem; color: var(--muted); }

footer.site {
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.9rem;
  color: var(--muted);
}
footer.site .wrap { padding-top: 1.5rem; padding-bottom: 2rem; }
footer.site p { margin: 0 0 0.4rem; }
footer.site strong { color: var(--text); }