:root {
  --bg: #f7faf8;
  --fg: #1c2a25;
  --muted: #5a6b64;
  --accent: #2e7d6b;
  --card: #ffffff;
  --line: #dbe5e0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101816;
    --fg: #e6efeb;
    --muted: #9db0a8;
    --accent: #5fc2a8;
    --card: #17221f;
    --line: #26352f;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; padding-bottom: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
.brand img { border-radius: 7px; }
.app-icon { border-radius: 22%; margin: 0 0 12px; display: block; }
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
main { padding: 40px 0 56px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.lead { color: var(--muted); font-size: 1.1rem; }
a { color: var(--accent); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0;
}
.card h3 { margin: 0 0 4px; }
.card p { margin: 4px 0 0; color: var(--muted); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
footer .wrap { padding-top: 20px; padding-bottom: 28px; }