.app-work {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.app-nav {
  width: 11rem;
  flex-shrink: 0;
}
.app-nav .btn {
  display: flex;
  width: 100%;
  margin-bottom: 0.35rem;
  justify-content: flex-start;
}
.app-main { min-width: 0; flex: 1; }
.btn[hidden] { display: none !important; }
@media (max-width: 800px) {
  .app-work { flex-direction: column; }
  .app-nav { width: 100%; }
}
.tab-ctl fieldset { border: 0; margin: 0; padding: 0; min-inline-size: 0; }