:root {
  color-scheme: light dark;
  --ground: #f2f2f7;
  --surface: #ffffff;
  --text: #1c1c1e;
  --text-secondary: #6e6e73;
  --accent: #ff9500;
  --rule: #e5e5ea;
  --measure: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #000000;
    --surface: #1c1c1e;
    --text: #f2f2f7;
    --text-secondary: #98989d;
    --accent: #ff9f0a;
    --rule: #3a3a3c;
  }
}

* {
  box-sizing: border-box;
}

html {
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica,
    Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
}

header,
main,
footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem;
}

header {
  padding-top: 3rem;
  padding-bottom: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.brand svg {
  width: 44px;
  height: 44px;
  flex: none;
}

.brand strong {
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

nav {
  margin-top: 1.25rem;
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

main {
  padding-bottom: 3rem;
}

article {
  background: var(--surface);
  border-radius: 20px;
  padding: 1.75rem 1.5rem;
  margin-top: 1rem;
}

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 1.75rem 0 0.5rem;
}

p,
li {
  margin: 0.5rem 0;
}

ul {
  padding-left: 1.25rem;
}

.meta {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.lead {
  font-size: 1.125rem;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 1.5rem 0;
}

footer {
  padding-bottom: 3rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}