:root {
  color-scheme: light dark;
  --background: #fafaf9;
  --surface: #ffffff;
  --outline: #e4e4e1;
  --text: #1c1c1a;
  --muted: #6b6b66;
  --accent: #2f5d8a;
  --heading: var(--text);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #121212;
    --surface: #1c1c1c;
    --outline: #333333;
    --text: #e6e6e3;
    --muted: #9a9a95;
    --accent: #8ab4e0;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 3rem 1rem;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}

main {
  max-width: 600px;
  margin: 0 auto;
}

h1,
h2 {
  color: var(--heading);
  line-height: 1.3;
}

h1 {
  font-size: 1.75rem;
  margin-top: 0;
}

h2 {
  font-size: 1.2rem;
  margin-top: 2.5rem;
}

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

nav {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.lead {
  font-size: 1.1rem;
}

.muted {
  color: var(--muted);
}

ul.links {
  list-style: none;
  padding: 0;
}

ul.links li {
  margin: 0.5rem 0;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 8px;
}

.app {
  display: flex;
  gap: 1rem;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.app img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  flex: none;
}

.app strong {
  display: block;
  color: var(--accent);
}

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}