:root {
  --color-bg: #fafafa;
  --color-text: #1a1a1a;
  --color-accent: #2563eb;
  --color-muted: #6b7280;
  --max-width: 48rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid #e5e7eb;
}

.site-header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--color-accent);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.highlight {
  color: var(--color-accent);
}

.page h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.site-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid #e5e7eb;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}