/* Pages de présentation (hors application) : mêmes teintes que l'appli, thème du système. */
:root {
  --bg: #f6f7f9;
  --text: #14171c;
  --muted: #566070;
  --accent: #1f64d6;
  --line: #d9dde4;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --text: #eef1f6;
    --muted: #9aa3b2;
    --accent: #5b9bff;
    --line: #262b35;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
a { color: var(--accent); }
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 46rem;
  margin: 0 auto;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}
.brand { color: var(--text); font-weight: 700; text-decoration: none; }
main, footer { max-width: 46rem; margin: 0 auto; padding: 0 1rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 2rem 0 1rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 .5rem; }
h3 { font-size: 1.05rem; margin: 1.25rem 0 .25rem; }
li { margin: .25rem 0; }
.button {
  display: inline-block;
  padding: .7rem 1.2rem;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
footer {
  margin-top: 3rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
}