body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background: #f7f9fa;
  color: #222;
}
header {
  background: #1a237e;
  color: #fff;
  padding: 2rem 0 1rem 0;
  text-align: center;
}
header nav {
  margin-top: 1rem;
}
header nav a {
  color: #fff;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: 500;
}
header nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}
section {
  margin-bottom: 2.5rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(60,72,88,0.07);
  padding: 2rem;
}
h2 {
  color: #1a237e;
  margin-top: 0;
}
form input, form textarea {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.75rem;
  border: 1px solid #bdbdbd;
  border-radius: 4px;
  font-size: 1rem;
}
form button {
  background: #1a237e;
  color: #fff;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}
form button:hover {
  background: #3949ab;
}
footer {
  text-align: center;
  padding: 1rem 0;
  background: #e8eaf6;
  color: #333;
  margin-top: 2rem;
  font-size: 0.95rem;
}