:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #5c6570;
  --card: #f6f8fa;
  --border: #d8dee4;
  --accent: #4d6bfe;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101418;
    --fg: #e6edf3;
    --muted: #8b949e;
    --card: #171d23;
    --border: #2d333b;
    --accent: #7c93ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.site-header, .page, .site-footer { max-width: 46rem; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }
.site-header { padding-top: 2rem; }
.site-title { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: var(--fg); }
.site-tagline { margin: 0.25rem 0 0; color: var(--muted); }
.page { padding-top: 1rem; padding-bottom: 3rem; }
.page-body h1 { font-size: 1.6rem; line-height: 1.25; }
.page-intro { color: var(--muted); font-size: 0.9rem; }
.page-intro:empty { display: none; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.card-title { margin: 0; font-size: 1.15rem; line-height: 1.35; }
.card-title a { text-decoration: none; }
.card-title a:hover { text-decoration: underline; }
.card-meta, .item-meta { color: var(--muted); font-size: 0.9rem; }
.card-summary { margin: 0.5rem 0; }
.card-sources { margin: 0.5rem 0 0; font-size: 0.9rem; }
.source-list { padding-left: 1.25rem; }
.site-footer {
  padding-top: 1rem;
  padding-bottom: 2.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}
.empty { color: var(--muted); }