body {
  margin: 0;
  font-family: 'Manrope', sans-serif;
  background: linear-gradient(to right, #f0f4f8, #ffffff);
  color: #2c3e50;
}
header {
  text-align: center;
  padding: 2rem 1rem;
  background: linear-gradient(to right, #1976d2, #42a5f5);
  color: white;
  position: relative;
}
h1 {
  margin: 0;
  font-size: 2.5rem;
}
main {
  max-width: 800px;
  margin: 2rem auto;
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}
h2 {
  color: #1976d2;
  margin-top: 2rem;
}
p {
  line-height: 1.6;
}
.lang-switch {
  position: absolute;
  top: 1rem;
  right: 1rem;
}
.lang-switch button {
  background: rgba(255,255,255,0.2);
  border: none;
  font-weight: bold;
  margin: 0 0.5rem;
  cursor: pointer;
  color: white;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
}