body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
}

.header-logo {
  max-width: 160px;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  padding: 16px;
  margin-bottom: 20px;
}