:root {
  --fg: #1a1a1a;
  --muted: #666;
  --accent: #f38020;
  --bg: #fafafa;
  --max: 720px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

h1 { font-size: 2rem; margin: 0 0 0.5rem; }

.lead { color: var(--muted); font-size: 1.1rem; margin: 0 0 2rem; }

.sections { list-style: none; padding: 0; }

.sections li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #eee;
}

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

.back { display: inline-block; margin-bottom: 2rem; font-size: 0.9rem; }