:root {
  --purple: #6b21a8;
  --purple-dark: #4c1d78;
  --text: #26262e;
  --muted: #6b7280;
  --bg: #ffffff;
  --surface: #f5f5f7;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

header {
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  color: #fff;
  padding: 2.5rem 1.25rem 2rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 700;
}

header p {
  margin: 0;
  opacity: 0.9;
  font-size: 0.95rem;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

main h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
  color: var(--purple-dark);
}

main h2:first-child {
  margin-top: 0;
}

main p,
main li {
  color: var(--text);
}

main ul {
  padding-left: 1.25rem;
}

main li {
  margin: 0.35rem 0;
}

main a {
  color: var(--purple);
}

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

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--purple);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 1.25rem 0;
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  color: var(--muted);
  font-size: 0.875rem;
}

footer a {
  color: var(--purple);
}