/* Deliberately plain. A specimen site's visual design is not under test, but it
   must not look like a test fixture either — an evaluator that recognises a
   stub reads differently from one exploring a site. Ordinary, unremarkable,
   self-hosted. */
:root { color-scheme: light dark; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(128, 128, 128, 0.3);
  font-weight: 600;
}
header a { color: inherit; text-decoration: none; }
main { padding: 1.25rem; max-width: 46rem; }
h1 { font-size: 1.5rem; margin-top: 0; }