:root {
  --ink: #1b2027;
  --ink-muted: #55605c;
  --paper: #f3f4ef;
  --card: #ffffff;
  --line: rgba(27, 32, 39, 0.12);
  --accent: #2a4ca6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

header.site .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}

header.site nav {
  display: flex;
  gap: 18px;
}

header.site nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 14px;
}

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

h1 {
  font-size: 28px;
  margin: 0 0 6px;
}

.updated {
  color: var(--ink-muted);
  font-size: 13px;
  margin-bottom: 32px;
}

h2 {
  font-size: 18px;
  margin: 32px 0 10px;
}

h3 {
  font-size: 15px;
  margin: 18px 0 8px;
  color: var(--ink-muted);
}

p, li {
  color: var(--ink);
}

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

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 24px;
  margin-top: 8px;
}

footer.site {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 13px;
}