body{
  margin:0;
  font-family:sans-serif;
  background:linear-gradient(135deg,#0a0f1f,#0b1738);
  display:flex;
  align-items:center;
  justify-content:center;
  height:100vh;
  color:#e6f0ff;
}
.card{
  background:#0f1a36cc;
  border-radius:20px;
  padding:40px;
  text-align:center;
  max-width:500px;
  box-shadow:0 10px 40px #0008;
}
.logo img{width:80px;margin-bottom:20px;}
h1{font-size:2.5em;margin:0;}
.lead{color:#95a3c3;margin:10px 0 20px;}
.donate-btn{
  display:inline-block;
  margin-top:20px;
  background:linear-gradient(135deg,#194BFB,#4FD1C5);
  color:#fff;
  text-decoration:none;
  font-weight:600;
  padding:14px 26px;
  border-radius:999px;
  transition:.2s ease;
}
.donate-btn:hover{transform:scale(1.05);}