:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --accent: #2e6bb8;
  --border: #e4e4e4;
  --max-width: 720px;
}

* { box-sizing: border-box; }

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

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

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
}

.site-header nav a {
  margin-left: 16px;
  font-size: 14px;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

article h1 {
  font-size: 2rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

article h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}

article h3 {
  font-size: 1.15rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
}

article p { margin: 0.75rem 0; }

article ul, article ol { padding-left: 1.4rem; }
article li { margin: 0.35rem 0; }

article hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

article th, article td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}

article th {
  background: #f0f0f0;
  font-weight: 600;
}

article code {
  font-family: "SF Mono", Consolas, Monaco, monospace;
  background: #f0f0f0;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.92em;
}

.legal-links {
  list-style: none;
  padding: 0;
}
.legal-links li {
  margin: 0.5rem 0;
  font-size: 1.05rem;
}

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px 32px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161616;
    --fg: #e8e8e8;
    --muted: #a0a0a0;
    --accent: #6fa4e0;
    --border: #2d2d2d;
  }
  .site-header { background: #1e1e1e; }
  article th { background: #242424; }
  article code { background: #242424; }
}