:root {
  --fg: #1f2328;
  --muted: #59636e;
  --bg: #ffffff;
  --accent: #0969da;
  --border: #d1d9e0;
  --code-bg: #f6f8fa;
  --max-width: 860px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
}

code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre  { background: var(--code-bg); padding: 1em; border-radius: 6px; overflow-x: auto; }
pre code { background: none; padding: 0; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
}

.site-brand { font-weight: 600; color: var(--fg); }
.site-header nav a { margin-left: 1rem; color: var(--muted); }

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem;
}

.site-footer {
  max-width: var(--max-width);
  margin: 4rem auto 2rem;
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9em;
}

.breadcrumb {
  color: var(--muted);
  font-size: 0.9em;
  margin-bottom: 1.5rem;
}

.manual-index { list-style: none; padding: 0; }
.manual-index li { padding: 0.25rem 0; }

.hero { padding: 3rem 0 2rem; text-align: center; }
.hero h1 { font-size: 2.25rem; margin: 0 0 0.5rem; }
.hero .version { color: var(--muted); }
.hero .cta {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: white;
  border-radius: 6px;
  font-weight: 500;
}
.hero .cta:hover { text-decoration: none; opacity: 0.9; }

table { border-collapse: collapse; }
th, td { border: 1px solid var(--border); padding: 0.4rem 0.7rem; }