:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --fg: #16202c;
  --fg-muted: #55636f;
  --accent: #0b5fa5;
  --border: #e0e5ea;
  --maxw: 46rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--fg);
  text-decoration: none;
}

nav.site a {
  margin-left: 1.1rem;
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--fg-muted);
}

nav.site a:first-child { margin-left: 0; }
nav.site a:hover { color: var(--accent); }

main { padding: 2.5rem 0 3rem; }

h1 {
  font-size: 1.9rem;
  line-height: 1.25;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.2rem 0 0.6rem;
}

h3 {
  font-size: 1rem;
  margin: 1.6rem 0 0.4rem;
}

p, ul, ol { margin: 0 0 1rem; }

ul, ol { padding-left: 1.3rem; }

li { margin-bottom: 0.35rem; }

.lead {
  font-size: 1.12rem;
  color: var(--fg-muted);
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  margin: 1.5rem 0;
}

.card p:last-child { margin-bottom: 0; }

address {
  font-style: normal;
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2.5rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

footer.site a {
  color: var(--fg-muted);
  margin-right: 1.1rem;
}

.updated {
  font-size: 0.88rem;
  color: var(--fg-muted);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171d;
    --bg-alt: #1a2129;
    --fg: #e8edf2;
    --fg-muted: #9aa7b4;
    --accent: #6cb2ea;
    --border: #2a333d;
  }
  .brand { color: var(--fg); }
}