:root {
  --fg: #222;
  --muted: #666;
  --accent: #1b5e9b;
  --bg: #fafafa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.site-header, main, .site-footer {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header { padding-top: 2.5rem; padding-bottom: 1rem; border-bottom: 1px solid #e3e3e3; }
.site-header h1 { margin: 0; font-size: 1.6rem; }
.site-header h1 a { color: var(--fg); text-decoration: none; }
.tagline { margin: .25rem 0 0; color: var(--muted); }

main { padding-top: 1.5rem; padding-bottom: 2rem; }
.post-preview { margin-bottom: 2rem; }
.post-preview h2 { margin: 0 0 .15rem; font-size: 1.25rem; }
.post-preview h2 a, article.post a { color: var(--accent); text-decoration: none; }
.post-preview h2 a:hover, article.post a:hover { text-decoration: underline; }
.meta { margin: 0 0 .5rem; color: var(--muted); font-size: .9rem; }

article.post h1 { font-size: 1.75rem; margin-bottom: .25rem; }
article.post pre {
  background: #f0f0f0;
  padding: .85rem 1rem;
  overflow-x: auto;
  border-radius: 4px;
  font-size: .9rem;
}

.site-footer { padding-top: 1rem; padding-bottom: 2.5rem; color: var(--muted); font-size: .85rem; border-top: 1px solid #e3e3e3; }