:root {
  color-scheme: light dark;
  --background: #f6f7fb;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5f6572;
  --border: #e3e6ee;
  --accent: #5b4fc7;
  --accent-soft: #ece9ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #101116;
    --surface: #191b22;
    --text: #f4f4f7;
    --muted: #b5b8c2;
    --border: #30333d;
    --accent: #b7adff;
    --accent-soft: #292444;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

header,
main,
footer {
  width: min(860px, calc(100% - 32px));
  margin-inline: auto;
}

header {
  padding: 40px 0 24px;
}

.brand {
  color: var(--text);
  font-size: 25px;
  font-weight: 750;
  letter-spacing: -0.03em;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 18px;
}

nav a,
main a,
footer a {
  color: var(--accent);
}

main {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: clamp(24px, 6vw, 56px);
  box-shadow: 0 18px 60px rgb(18 20 28 / 7%);
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(34px, 7vw, 54px);
}

h2 {
  margin-top: 42px;
  font-size: 27px;
}

h3 {
  margin-top: 30px;
  font-size: 21px;
}

p,
li {
  max-width: 72ch;
}

.lead,
.meta {
  color: var(--muted);
}

.language {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.callout {
  margin: 28px 0;
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--accent-soft);
}

footer {
  padding: 28px 0 48px;
  color: var(--muted);
  font-size: 14px;
}