body {
  font-family: 'Helvetica Neue', sans-serif;
  background: #f5f8fa;
  color: #333;
}
header {
  background: linear-gradient(135deg, #1d3557, #457b9d);
  color: white;
}
header h1 {
  font-size: 2.8rem;
}
header p {
  font-size: 1.2rem;
}
section h2 {
  border-left: 6px solid #0d6efd;
  padding-left: 12px;
  margin-bottom: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.btn-primary, .btn-success {
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  border-radius: 50px;
}
.list-group-item {
  border: none;
  border-bottom: 1px solid #e0e0e0;
}
.table th {
  background-color: #f1f3f5;
  width: 30%;
}
.table td {
  background-color: #fff;
}
footer {
  font-size: 0.95rem;
}
footer a {
  color: #0d6efd;
  text-decoration: none;
  margin: 0 10px;
}
footer a:hover {
  text-decoration: underline;
}
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  header p {
    font-size: 1rem;
  }
  .btn-lg {
    font-size: 1rem;
    padding: 0.6rem 1.2rem;
  }
}