body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

header, footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 1.5rem;
}

header h1 {
  margin: 0;
}

header a, footer a {
  color: #ffd700;
  text-decoration: none;
}

section {
  padding: 2rem;
  max-width: 900px;
  margin: auto;
  background: #fff;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

section h2 {
  color: #005f73;
}

ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}

@media (max-width: 600px) {
  section {
    padding: 1rem;
  }
}