:root {
  --ink: #1f2430;
  --muted: #6b7280;
  --accent: #2563eb;
  --bg: #fdfdfb;
}

* { box-sizing: border-box; }

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

main, .site-header, .site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.site-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  border-bottom: 1px solid #eee;
  flex-wrap: wrap;
}

.site-title {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--ink);
}

.site-nav { display: flex; gap: 1rem; }
.site-nav a { color: var(--accent); text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }

h1 { line-height: 1.2; }
.tagline { color: var(--muted); font-size: 1.1rem; }

.post-list { list-style: none; padding: 0; }
.post-list li { margin: 0.4rem 0; display: flex; gap: 0.75rem; align-items: baseline; }
.post-list time, .post-date { color: var(--muted); font-size: 0.85rem; }

.site-footer {
  border-top: 1px solid #eee;
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}