:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #666666;
  --color-accent: #1a56db;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --content-width: 40rem;
  --space: 1.5rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: var(--space);
  max-width: var(--content-width);
  margin-inline: auto;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: calc(var(--space) * 2);
}

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

.site-header nav a {
  margin-left: var(--space);
}

.post-list {
  list-style: none;
  padding: 0;
}

.post-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space);
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
}

.post-date {
  color: var(--color-muted);
  font-size: 0.9em;
  white-space: nowrap;
}

.site-footer {
  margin-top: calc(var(--space) * 2);
  color: var(--color-muted);
  font-size: 0.9em;
}