:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --rule: #e2e8f0;
  --accent: #0f766e;
  --accent-hover: #115e59;
  --surface: #f8fafc;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --rule: #1e293b;
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --surface: #111c33;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

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

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { color: var(--accent-hover); }

header.site {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

nav.app a {
  margin-right: 1rem;
  text-decoration: none;
}
nav.app a:last-child { margin-right: 0; }
nav.app a[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
}

main { padding: 2.5rem 0 3rem; }

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.125rem;
  margin: 2.25rem 0 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

h3 { font-size: 1rem; margin: 1.5rem 0 0.25rem; }

p, ul, dl { margin: 0 0 1rem; }
ul { padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }

.meta { color: var(--muted); font-size: 0.9375rem; }

.apps { list-style: none; padding: 0; }
.apps li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  margin: 0;
}
.apps li:first-child { border-top: 1px solid var(--rule); }
.apps strong { display: block; font-size: 1.125rem; }
.apps .links { font-size: 0.9375rem; }
.apps .links a { margin-right: 1rem; }

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) {
  h1 { font-size: 1.625rem; }
  dl.facts { grid-template-columns: 1fr; gap: 0; }
  dl.facts dd { margin-bottom: 0.6rem; }
}

.table-scroll { overflow-x: auto; margin: 0 0 1rem; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9375rem;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--rule);
}
th { font-weight: 700; }

footer.site {
  border-top: 1px solid var(--rule);
  padding: 1.25rem 0 2rem;
  color: var(--muted);
  font-size: 0.875rem;
}
footer.site a { color: var(--muted); }