:root {
  --ink: #1f2937;
  --ink-muted: #6b7280;
  --sky-blue: #0284c7;
  --background: #ffffff;
  --card: #f9fafb;
  --border: #e5e7eb;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--background);
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 96px;
}

header.site {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--background);
}

header.site .row {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

header.site nav a {
  color: var(--sky-blue);
  text-decoration: none;
  margin-left: 20px;
  font-size: 15px;
}

header.site nav a:hover {
  text-decoration: underline;
}

h1 {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--ink);
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 8px;
  color: var(--ink);
}

p {
  margin: 0 0 16px;
  color: var(--ink);
}

p.updated {
  color: var(--ink-muted);
  font-size: 14px;
  margin-bottom: 32px;
}

a {
  color: var(--sky-blue);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card h2 {
  margin-top: 0;
}

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

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--ink-muted);
  font-size: 13px;
}