:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --rule: #e5e5ea;
  --accent: #0a66d8;
  --card: #f5f5f7;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f2f2f7;
    --muted: #98989f;
    --rule: #2c2c2e;
    --accent: #4da3ff;
    --card: #1c1c1e;
  }
}

* { 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, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

header.site {
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 16px 0;
  display: flex;
  gap: 20px;
  align-items: baseline;
  flex-wrap: wrap;
}

header.site .brand {
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}

header.site nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 15px;
}

header.site nav a:hover,
header.site nav a[aria-current="page"] { color: var(--text); }

h1 {
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h2 {
  font-size: 21px;
  margin: 36px 0 8px;
}

p, ul { margin: 0 0 16px; }

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

.updated {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 32px;
}

.lede {
  font-size: 20px;
  color: var(--muted);
  margin-bottom: 32px;
}

.card {
  background: var(--card);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 24px 0;
}

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

.links {
  list-style: none;
  padding: 0;
}

.links li { margin: 0 0 10px; }

.links a {
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
}

.faq h3 {
  font-size: 17px;
  margin: 24px 0 4px;
}

footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 16px 40px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 14px;
}