:root {
  color-scheme: dark light;
  --bg: #0b0d10;
  --text: #e8ebef;
  --muted: #9ca3af;
  --border: #1f2937;
  --panel: #111418;
  --link: #84cc16;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #e2e8f0;
    --text: #0f172a;
    --muted: #475569;
    --border: #cbd5e1;
    --panel: #ffffff;
    --link: #15803d;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 15px;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}

header.top .title {
  font-size: 18px;
  font-weight: 700;
}

header.top .back {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

header.top .back:hover {
  color: var(--text);
}

h1 {
  font-size: 26px;
  margin: 0 0 8px;
}

.subtitle {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 28px;
}

h2 {
  font-size: 17px;
  margin: 32px 0 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

p, ul, ol {
  margin: 12px 0;
}

ul, ol {
  padding-left: 22px;
}

li {
  margin: 4px 0;
}

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

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  background: var(--panel);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
  border: 1px solid var(--border);
}

.note {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--muted);
}