:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f6f7f9;
  --text: #1b1f24;
  --muted: #5c6672;
  --border: #e3e6ea;
  --accent: #128c7e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --surface: #1c2024;
    --text: #e8eaed;
    --muted: #9aa4af;
    --border: #2b3035;
    --accent: #25d366;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding-block: 3rem 4rem;
}

header {
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.15rem;
  letter-spacing: -0.005em;
}

h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1rem;
}

p,
li {
  color: var(--text);
}

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

li {
  margin-bottom: 0.4rem;
}

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

.updated {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

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

.callout {
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
}

.callout p:first-child {
  margin-top: 0;
}

.callout p:last-child {
  margin-bottom: 0;
}

table {
  width: 100%;
  margin: 1rem 0;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

th,
td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.table-wrap {
  overflow-x: auto;
}

footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 0.75rem;
}