:root {
  --bg: #ffffff;
  --bg-soft: #faf9f7;
  --fg: #1c1a17;
  --fg-muted: #5f5a52;
  --border: #e6e2dc;
  --accent: #3f7d58;
  --max: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131211;
    --bg-soft: #1b1a18;
    --fg: #f0ede8;
    --fg-muted: #a7a099;
    --border: #2b2926;
    --accent: #7fbf98;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

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

header .wrap {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 650;
  font-size: 1.05rem;
  color: var(--fg);
  text-decoration: none;
}

nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }

nav a, footer a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.925rem;
}

nav a:hover, footer a:hover { color: var(--fg); }

h1 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  margin: 1.75rem 0 0.5rem;
}

p, li { color: var(--fg-muted); }
li { margin-bottom: 0.4rem; }

strong { color: var(--fg); font-weight: 600; }

.lede { font-size: 1.05rem; }

.updated {
  font-size: 0.875rem;
  color: var(--fg-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.card {
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0;
}

.card h3 { margin-top: 0; }

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

footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
}

footer .wrap {
  padding: 2rem 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--fg-muted);
}

footer nav { gap: 1rem; }