:root {
  --text: #1a1a1a;
  --bg: #ffffff;
  --muted: #666666;
  --max-width: 72rem;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.site-header, main, .site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
}

.logo { font-weight: 700; color: inherit; text-decoration: none; }
.hero { padding: 6rem 0; }
.site-footer { color: var(--muted); font-size: 0.875rem; }