body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: linear-gradient(to bottom right, #006400, #00a859);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
}
.logo img {
  width: 120px;
  height: auto;
  margin-bottom: 1.5rem;
}
h1 {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
}
p {
  font-size: 1rem;
  margin-bottom: 2rem;
}
footer {
  font-size: 0.85rem;
  position: absolute;
  bottom: 1rem;
  opacity: 0.7;
}
@media (min-width: 600px) {
  h1 {
    font-size: 2.8rem;
  }
  p {
    font-size: 1.2rem;
  }
}