:root {
  --text: #1f2328;
  --muted: #656d76;
  --rule: #d8dee4;
  --accent: #c2410c;
  --bg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #e6edf3;
    --muted: #8d96a0;
    --rule: #30363d;
    --accent: #fb923c;
    --bg: #0d1117;
  }
}

* {
  box-sizing: border-box;
}

body {
  max-width: 680px;
  margin: 0 auto;
  padding: 64px 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.2;
}

header p {
  margin: 0 0 12px;
}

nav a {
  margin-right: 16px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h2 {
  margin: 48px 0 16px;
  padding-bottom: 6px;
  font-size: 1.1rem;
  border-bottom: 1px solid var(--rule);
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.timeline div {
  display: flex;
  flex-direction: column;
}

.date,
.timeline small {
  color: var(--muted);
}

.date {
  font-variant-numeric: tabular-nums;
}

.timeline small {
  font-size: 0.875rem;
}

@media (max-width: 520px) {
  body {
    padding-top: 40px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 0;
  }
}