.tree-container {
    max-width: 900px;
    margin: 0 auto;
  }

  /* Estructura principal */
  .tree-container ul {
    list-style: none;
    padding-left: 1rem;
  }

  .tree-label {
    cursor: pointer;
    font-weight: 600;
    color: #003366;
    margin-bottom: 0.3rem;
    user-select: none;
  }

  .tree-label:hover {
    color: #DEA62A;
  }

  /* Ocultar listas anidadas al inicio */
  .nested-list {
    display: none;
    margin-left: 1.2rem;
    border-left: 2px solid #eee;
    padding-left: 1rem;
  }

  /* Mostrar al abrir */
  .nested-list.show {
    display: block;
  }

  /* Enlaces e íconos */
  .tree-node a {
    display: flex;
    align-items: center;
    color: #333;
    text-decoration: none;
    padding: 4px 0;
    transition: color 0.2s ease;
  }

  .tree-node a:hover {
    color: #003366;
  }

  .toggle-icon {
    font-weight: bold;
    margin-right: 6px;
    color: #DEA62A;
  }