:root {
  --bg: #fbfaff;
  --text: #1c1b22;
  --muted: #55525f;
  --accent: #5b3fd9;
  --card: #ffffff;
  --border: #e4e0f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131217;
    --text: #f2f1f6;
    --muted: #b4b1bf;
    --accent: #a995ff;
    --card: #1d1c23;
    --border: #2f2d38;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1rem 4rem; }
header { margin-bottom: 2rem; }
header .app { display: flex; align-items: center; gap: .75rem; font-weight: 600; }
header .app img { width: 44px; height: 44px; border-radius: 10px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 1rem 0 .25rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 3rem; font-size: .95rem; }