body {  
  margin: 0;  
  padding: 0;  
  font-family: 'Segoe UI', Arial, sans-serif;  
  background: linear-gradient(120deg, #e0eafc, #cfdef3);  
  min-height: 100vh;  
}  
.container {  
  background: #fff;  
  max-width: 400px;  
  margin: 60px auto;  
  border-radius: 16px;  
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);  
  padding: 40px 30px;  
  text-align: center;  
}  
.logo {  
  margin-bottom: 18px;  
}  
.logo img {  
  height: 128px;  
}  
h1 {  
  font-size: 2em;  
  margin-bottom: 10px;  
  color: #0A4444;  
  letter-spacing: 1px;  
}  
p {  
  color: #0A4444;  
  margin-bottom: 30px;  
}  
.download-list {  
  list-style: none;  
  padding: 0;  
}  
.download-list li {  
  margin: 20px 0;  
}  
.download-btn {  
  display: inline-block;  
  background: #0A4444;  
  color: #fff;  
  padding: 12px 28px;  
  border-radius: 6px;  
  font-size: 1.08em;  
  text-decoration: none;  
  font-weight: bold;  
  box-shadow: 0 2px 8px rgba(32,64,128,0.07);  
  transition: background 0.23s;  
}  
.download-btn:hover {  
  background: #0A3434;  
}  
@media (max-width: 500px) {  
  .container {  
    max-width: 96vw;  
    padding: 15vw 4vw;  
  }  
}