body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  background-color: #f9f9f9;
  color: #333;
}
h1, h2 {
  color: #007c91;
}
section {
  margin-bottom: 3rem;
}
ul {
  padding-left: 1.2em;
}
footer {
  margin-top: 4rem;
  font-size: 0.9rem;
  color: #888;
}
.signup {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px solid #ccc;
  background: #fff;
}