body {
  font-family: 'Inter', sans-serif;
  background: #f0f2f5;
  margin:0;
  padding:0;
}
.container {
  max-width:600px;
  margin:50px auto;
  padding:30px;
  background:white;
  border-radius:20px;
  box-shadow:0 10px 40px rgba(0,0,0,0.1);
}
h1 { text-align:center; margin-bottom:20px; color:#333; }
input, textarea, select, button {
  width:100%;
  padding:14px;
  margin-bottom:15px;
  border-radius:10px;
  border:1px solid #ddd;
  font-size:16px;
}
button {
  cursor:pointer;
  font-weight:600;
  transition:0.2s;
}
button:hover { transform:translateY(-2px); box-shadow:0 5px 15px rgba(0,0,0,0.1); }
.success-message { color:#10b981; font-weight:600; display:none; margin-top:10px; text-align:center; }
.radio-group { display:flex; gap:15px; }
.radio-card { flex:1; padding:12px; border:2px solid #ddd; border-radius:12px; text-align:center; cursor:pointer; transition:0.3s; }
.radio-card.active { border-color:#667eea; background:#f3f5ff; box-shadow:0 5px 15px rgba(102,126,234,0.2); }