:root {
  color-scheme: dark;
  --bg: #0b0f19;
  --surface: #10162a;
  --border: #1f2637;
  --text: #e6e9f0;
  --muted: #9aa4bd;
  --heading: #6d7690;
  --link: #7dd3fc;
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.7;
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}

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

header {
  padding: 2.5rem 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

header .brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--text);
}

header .product {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

h1 {
  font-size: 1.85rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

.updated {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 2rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.25rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}

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

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

li {
  margin-bottom: 0.4rem;
}

strong {
  color: #fff;
}

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout p {
  margin: 0.4rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.92rem;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--heading);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
}

.toc ol {
  margin: 0.5rem 0 0;
}

nav.crumbs {
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  color: var(--muted);
}

nav.crumbs a {
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  padding: 2rem 1.5rem;
  text-align: center;
}

footer a {
  color: var(--muted);
}