body {
  margin: 0;
  background: radial-gradient(circle, #e0f7fa, #80deea);
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.intro-container {
  text-align: center;
  animation: fadeIn 2s ease-in-out;
}
.logo {
  width: 200px;
  animation: zoomIn 1.5s ease-in-out;
}
.slogan {
  margin-top: 20px;
  font-size: 1.5em;
  color: #00796b;
  font-family: sans-serif;
  animation: fadeIn 3s ease-in;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}