:root {
  --bg: #fcfbfd;
  --fg: #1a1a1a;
  --muted: #6a6a6a;
  --rule: #e6e4ea;
  --accent: #3d1b4a;
  --accent-light: #5c2a6f;
  --max-width: 42rem;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  padding: 2rem 1.25rem 4rem;
}

main, header, footer {
  max-width: var(--max-width);
  margin: 0 auto;
}

header {
  padding: 1rem 0 2rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2.5rem;
}

header nav {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
}

header .brand {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
}

header nav a:not(.brand) {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

header nav a:not(.brand):hover {
  color: var(--accent);
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.3rem;
  line-height: 1.3;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
  color: var(--accent);
}

p, ul, ol {
  margin: 0 0 1rem;
}

ul, ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.35rem;
}

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

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

.tagline {
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.callout {
  padding: 1.25rem 1.5rem;
  background: #f4eef7;
  border-left: 3px solid var(--accent);
  border-radius: 2px;
  margin: 1.5rem 0 2rem;
}

.callout strong {
  color: var(--accent);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 1rem 0 1.5rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: #ece7f0;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}

footer nav {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

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

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }

@media (max-width: 640px) {
  body { padding: 1.25rem 1rem 3rem; font-size: 16px; }
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.2rem; }
}