* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
  padding: 15px;
}

.illustration {
  max-width: 350px;
  width: 100%;
  margin-bottom: 30px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

h1 {
  font-size: 2rem;
  color: #2b2b52;
  margin-bottom: 15px;
}

p {
  color: #4f4f71;
  font-size: 1rem;
  margin-bottom: 25px;
  line-height: 1.6;
}

.btn:hover {
  background-color: #5851db;
  transform: translateY(-2px);
}

@media (max-width: 600px) {
  h1 { font-size: 1.6rem; }
  p { font-size: 0.95rem; }
}