:root {
  --bg: #0d1117;
  --surface: #161b22;
  --text: #e6edf3;
  --muted: #9aa4af;
  --accent: #4ade80;
  --border: #262d36;
  --max: 44rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --surface: #f6f8fa;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #15803d;
    --border: #d1d9e0;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

header.site .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

header.site a {
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.01em;
}

header.site .dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 {
  font-size: 1.9rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2.2rem 0 0.4rem;
  letter-spacing: -0.01em;
}

p.lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin-top: 0;
}

p.meta {
  color: var(--muted);
  font-size: 0.85rem;
}

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

ul {
  padding-left: 1.2rem;
}

li {
  margin: 0.3rem 0;
}

footer.site {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

footer.site .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

footer.site a {
  color: var(--muted);
}

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