:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5c6472;
  --rule: #e2e5ea;
  --accent: #2f6bd6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #080b13;
    --fg: #e8ebf2;
    --muted: #98a1b6;
    --rule: #252b3f;
    --accent: #4f8cf0;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 3rem 1.5rem 6rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica,
    Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

main {
  max-width: 42rem;
  margin: 0 auto;
}

nav {
  max-width: 42rem;
  margin: 0 auto 3rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
  flex-wrap: wrap;
}

nav .wordmark {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--fg);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9375rem;
}

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

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.015em;
}

h2 {
  font-size: 1.25rem;
  margin: 2.75rem 0 0.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.0625rem;
  margin: 1.75rem 0 0.5rem;
}

p,
ul {
  margin: 0 0 1.1rem;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.4rem;
}

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

.effective {
  color: var(--muted);
  font-size: 0.9375rem;
  margin-bottom: 2.5rem;
}

footer {
  max-width: 42rem;
  margin: 4rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.875rem;
}

.lede {
  font-size: 1.0625rem;
}

.home-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}