:root {
  --ink: #172033;
  --muted: #5c6678;
  --line: #d9dee8;
  --soft: #f7fafc;
  --accent: #0f766e;
  --accent-soft: #e7f4f1;
}

* {
  box-sizing: border-box;
}

body {
  max-width: 980px;
  margin: 0 auto;
  padding: 44px 28px 72px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Arial, sans-serif;
  color: var(--ink);
  background: #ffffff;
  line-height: 1.62;
}

h1 {
  margin: 0 0 18px;
  font-size: 2.35rem;
  line-height: 1.08;
  color: #0b2f2a;
}

h2 {
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: #123a35;
}

h3 {
  margin-top: 26px;
  color: #243044;
}

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

code {
  background: var(--accent-soft);
  padding: 0.1rem 0.28rem;
  border-radius: 4px;
}

pre {
  overflow-x: auto;
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 14px;
  border-radius: 8px;
}

blockquote {
  border-left: 4px solid var(--accent);
  margin: 22px 0;
  padding: 8px 18px;
  background: var(--soft);
  color: #273548;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 18px 0;
}

th,
td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef2f7;
}

@media print {
  body {
    max-width: none;
    padding: 24px;
  }
}