:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --muted: #5a5a5a;
  --accent: #1d5c9e;
  --accent-dark: #164a80;
  --border: #e2e2e2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f0f0f0;
    --bg: #14161a;
    --bg-alt: #1b1e24;
    --muted: #a3a3a3;
    --accent: #6ea8e8;
    --accent-dark: #8fbdf0;
    --border: #2a2d33;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg-alt);
  line-height: 1.5;
}

.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.site-header a.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.25rem;
}

.lead {
  color: var(--muted);
  margin-top: -0.5rem;
}

.catalogue {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.card h2 {
  margin-top: 0;
}

.button {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  margin-top: 0.5rem;
}

.button:hover {
  background: var(--accent-dark);
}

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