body {
  font-family: 'Segoe UI', sans-serif;
  background: #f4faff;
  color: #222;
  margin: 0;
  line-height: 1.6;
}
header, footer {
  background: #01579b;
  color: white;
  text-align: center;
  padding: 1rem;
}
nav a {
  color: white;
  margin: 0 1rem;
  font-weight: bold;
  text-decoration: none;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 2rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h2 {
  color: #0277bd;
}
img {
  width: 100%;
  margin: 1rem 0;
  border-radius: 8px;
}
.text-box {
  background: #e1f5fe;
  padding: 1.5rem;
  border-radius: 8px;
}
footer {
  margin-top: 2rem;
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  nav a {
    display: block;
    margin: 0.5rem 0;
  }
}