* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Helvetica Neue', sans-serif;
  background: linear-gradient(135deg, #a1c4fd, #c2e9fb);
  color: #333;
  line-height: 1.6;
}
header {
  text-align: center;
  padding: 80px 20px 40px;
}
h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #222;
}
.subtitle {
  font-size: 1.2rem;
  color: #555;
  margin-bottom: 2rem;
}
.button {
  display: inline-block;
  background: #007bff;
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s ease;
}
.button:hover {
  background: #0056b3;
}
.features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px 20px;
  max-width: 800px;
  margin: auto;
}
.feature {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.feature h2 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}
footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 0.9rem;
  color: #555;
}
footer a {
  color: #007bff;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
@media (min-width: 768px) {
  .features {
    flex-direction: row;
    justify-content: space-around;
  }
}