*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #1a1a1a; color: #eee; }
body { max-width: 1200px; margin: 0 auto; padding: 0 1rem; min-height: 100vh; }

.site-header {
  padding: 2rem 0 0.5rem;
  border-bottom: 1px solid #333;
  margin-bottom: 0.5rem;
}

.site-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
}