:root {
  --fg: #111;
  --muted: #444;
  --border: #ddd;
  --accent: #1a4a7a;
  --callout: #f4f7fb;
}
body {
  font-family: system-ui, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  color: var(--fg);
}
h1 {
  font-size: 1.65rem;
  margin-top: 0;
  color: var(--accent);
}
.meta,
.doc-footer {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.doc-footer {
  border-bottom: none;
}
h2 {
  font-size: 1.15rem;
  margin-top: 1.75rem;
}
h3 {
  font-size: 1rem;
  margin-top: 1.25rem;
}
p {
  margin: 0.5rem 0;
}
ul,
ol {
  padding-left: 1.25rem;
}
li + li {
  margin-top: 0.3rem;
}
a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}
a:hover {
  color: #0d3561;
}
.back {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.9rem;
}
.callout {
  background: var(--callout);
  border-left: 4px solid var(--accent);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  font-size: 0.95rem;
  border-radius: 0 6px 6px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}
th,
td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.65rem;
  text-align: left;
}
th {
  background: var(--callout);
  font-weight: 600;
}
tr:hover td {
  background: #fafbfc;
}
code {
  background: #f0f0f0;
  padding: 0.15em 0.35em;
  border-radius: 3px;
  font-size: 0.88em;
}

@media (max-width: 480px) {
  body {
    padding: 1.25rem 1rem 3rem;
  }
  table {
    font-size: 0.8rem;
  }
  th, td {
    padding: 0.4rem 0.5rem;
  }
}

@media print {
  body { max-width: none; padding: 0; }
  .back { display: none; }
  a { color: var(--fg); text-decoration: underline; }
}