body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9f9;
  color: #333;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: #0f172a;
  color: #fff;
}
.navbar ul {
  list-style: none;
  display: flex;
  gap: 1rem;
}
.navbar a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}
.navbar a.active, .navbar a:hover {
  color: #38bdf8;
}
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, #1e293b, #334155);
  color: #fff;
}
.content {
  padding: 2rem;
  max-width: 900px;
  margin: auto;
}
.footer {
  background: #0f172a;
  color: #ddd;
  padding: 2rem;
}
.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}
.footer h3, .footer h4 {
  color: #fff;
}
.footer a {
  color: #38bdf8;
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}
.copyright {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #aaa;
}
@media (max-width: 768px) {
  .navbar ul {
    flex-direction: column;
  }
  .footer-content {
    flex-direction: column;
  }
}