:root {
  color-scheme: light dark;
  --background: #f7f7f4;
  --foreground: #1d1d1b;
  --link: #064f8c;
  --panel: #ffffff;
  --border: #c9c9c2;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.65;
  background: var(--background);
  color: var(--foreground);
}

.wrapper {
  max-width: 62rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  background: var(--panel);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
}

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

h2 {
  font-size: 1.45rem;
  margin-top: 2rem;
}

p {
  margin: 1rem 0;
}

ul {
  padding-left: 1.5rem;
}

li {
  margin: 0.45rem 0;
}

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

.topic-nav {
  border: 1px solid var(--border);
  padding: 0.75rem;
  margin: 1rem 0 2rem;
}

.topic-nav a {
  display: inline-block;
  margin-right: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #121212;
    --foreground: #f3f3f0;
    --link: #8ecbff;
    --panel: #1b1b1b;
    --border: #4a4a45;
  }
}