:root {
  color-scheme: light dark;
  --max-width: 720px;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #666666;
  --accent: #2b6cb0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f0f0f0;
    --bg: #121212;
    --muted: #a0a0a0;
    --accent: #6ea8ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

header, footer, main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 600;
  text-decoration: none;
  color: var(--fg);
}

.lang-switch a {
  margin-left: 0.75rem;
  color: var(--muted);
  text-decoration: none;
}

.lang-switch a.active {
  color: var(--accent);
  font-weight: 600;
}

.footer-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--muted);
  padding-top: 1.5rem;
  font-size: 0.9rem;
}

.footer-nav a {
  color: var(--muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--accent);
}

img.app-icon {
  width: 128px;
  height: 128px;
  border-radius: 22px;
}

h1 {
  font-size: 2rem;
  margin: 0.5rem 0 1rem;
}

h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 0.75rem;
}

main ul {
  padding-left: 1.25rem;
}

main li {
  margin-bottom: 0.5rem;
}

a { color: var(--accent); }