/* Placeholder landing page (deploy/host/www). No third-party assets. */
:root {
  --navy: #012e52;
  --teal: #0097b3;
  --mist: #e8eef4;
  --bg: #ffffff;
  --fg: var(--navy);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1622; --fg: var(--mist); }
}
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--fg);
  font: 18px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 36rem; padding: 2rem 1rem; }
h1 { margin: 0 0 0.5rem; font-size: 2.5rem; }
.byline { color: var(--teal); }
.signin {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
}