:root {
  --bg: #f5f9fc;
  --fg: #1e293b;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --border: #dbe4ee;
  --pre-bg: #eef4fa;
  --max: 42rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  min-height: 100vh;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  color: #1e3a5f;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2.25rem 0 0.65rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  color: #1e3a5f;
}

h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

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

.lead {
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
}

.meta {
  font-size: 0.95rem;
  margin: 0 0 1.75rem;
}

.note {
  font-size: 0.95rem;
  margin: 0.75rem 0 0;
}

p {
  margin: 0.6rem 0;
}

ol,
ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.35rem;
}

li {
  margin: 0.35rem 0;
}

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

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

.dl {
  display: inline-block;
  margin: 0.35rem 0.5rem 0.35rem 0;
  padding: 0.65rem 1.1rem;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
  border-radius: 4px;
}

.dl:hover {
  background: var(--accent-hover);
}

.dl.secondary {
  background: #fff;
  color: var(--accent) !important;
  border: 1px solid var(--accent);
}

.dl.secondary:hover {
  background: #e8f1fc;
}

pre {
  margin: 0.75rem 0;
  padding: 0.85rem 1rem;
  background: var(--pre-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-all;
}

dl {
  margin: 0.75rem 0;
}

dt {
  font-weight: 600;
  margin-top: 0.6rem;
}

dd {
  margin: 0.15rem 0 0;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.92rem;
  word-break: break-all;
}

.missing {
  color: var(--muted);
  font-style: italic;
}

footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}