.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: 100vh;
}

.portal-shell {
  min-height: 100vh;
  display: flex;
  background: #f3f6f4;
  color: #17211b;
}

.portal-shell {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

.portal-shell {
  display: block;
}

@media (max-width: 1040px) {
  .app-shell { grid-template-columns: 1fr; }
}