:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #0a66c2;
  --border: #e5e5e5;
  --card: #f7f7f8;
  --warning-bg: #fff8e1;
  --warning-border: #f0c200;
  --max-width: 820px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header.site {
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  padding-bottom: 24px;
}

header.site .brand {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

header.site h1 {
  margin: 12px 0 4px;
  font-size: 34px;
  line-height: 1.2;
}

header.site .meta {
  color: var(--muted);
  font-size: 14px;
}

nav.breadcrumb {
  margin-bottom: 32px;
  font-size: 14px;
}

nav.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}

nav.breadcrumb a:hover { text-decoration: underline; }

h2 {
  margin-top: 48px;
  font-size: 22px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

h3 {
  margin-top: 28px;
  font-size: 18px;
}

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

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

li { margin: 6px 0; }

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

code {
  background: var(--card);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.placeholder {
  background: #fff3cd;
  color: #7a5800;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.92em;
}

.callout {
  background: var(--card);
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  margin: 20px 0;
  border-radius: 4px;
}

.callout.warning {
  background: var(--warning-bg);
  border-left-color: var(--warning-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

table th, table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

table th {
  background: var(--card);
  font-weight: 600;
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.doc-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s, transform 0.15s;
  display: block;
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.doc-card h3 {
  margin: 0 0 8px;
  color: var(--accent);
}

.doc-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

footer.site {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 600px) {
  .container { padding: 32px 18px 64px; }
  header.site h1 { font-size: 26px; }
  h2 { font-size: 19px; }
}