body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background: #f9fafc;
  color: #222;
}
header {
  background: #1a355e;
  color: #fff;
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  align-items: center;
}
nav a {
  color: #fff;
  margin: 0 1rem;
  text-decoration: none;
}
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: #e9f1fb;
}
.cta {
  background: #1a355e;
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}
.features {
  display: flex;
  justify-content: space-around;
  padding: 2rem 0;
}
.features div {
  background: #fff;
  padding: 1rem;
  border-radius: 8px;
  width: 30%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  text-align: center;
}
footer {
  background: #1a355e;
  color: #fff;
  text-align: center;
  padding: 1rem 0;
}
@media (max-width: 800px) {
  .features {
    flex-direction: column;
    align-items: center;
  }
  .features div {
    width: 80%;
    margin-bottom: 1rem;
  }
}