:root {
  color-scheme: light;
  --ink: #18181b;
  --muted: #52525b;
  --line: #e4e4e7;
  --bg: #fafafa;
  --card: #ffffff;
  --link: #4f46e5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  font-size: 0.875rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

nav a:hover,
nav a[aria-current='page'] {
  color: var(--ink);
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 4.5rem;
}

h1 {
  margin: 0;
  font-size: 1.875rem;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

h2 {
  font-size: 1.125rem;
  margin: 2.25rem 0 0.75rem;
}

h3 {
  font-size: 1rem;
  margin: 1.4rem 0 0.4rem;
}

p,
li {
  color: var(--muted);
  font-size: 0.9375rem;
}

.lede {
  margin-top: 0.85rem;
}

.kicker {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--link);
}

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

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin: 0.4rem 0;
}

code {
  font-size: 0.8em;
  background: #f4f4f5;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.toc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}

footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem 2.5rem;
  text-align: center;
  font-size: 0.8125rem;
  color: #71717a;
}

footer a {
  color: inherit;
}