body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f7f7;
  color: #222;
}

header {
  background: #111;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

.hero {
  padding: 80px 20px;
  text-align: center;
  background: white;
}

.content {
  padding: 40px 20px;
  max-width: 800px;
  margin: auto;
}

footer {
  text-align: center;
  padding: 20px;
  background: #111;
  color: white;
}