body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f7fa;
  color: #333;
}

header {
  background-color: #007BFF;
  color: white;
  padding: 1.2rem 2rem;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

nav h1 {
  font-size: 1.5rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  padding: 0;
  margin: 0;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

section {
  padding: 3rem 1.5rem;
  max-width: 900px;
  margin: auto;
  background: white;
  border-radius: 10px;
  margin-top: 1.5rem;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

h1, h2 {
  color: #007BFF;
}

ul li {
  margin-bottom: 0.5rem;
}

footer {
  text-align: center;
  background-color: #007BFF;
  color: white;
  padding: 1rem;
  margin-top: 2rem;
  font-size: 0.9rem;
}