[hidden] { display: none !important; }

.app-help {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: min(20rem, calc(100% - 2rem));
  padding: .75rem;
  border: 1px solid #7693d4;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 .75rem 2rem rgba(0, 0, 0, .22);
  backdrop-filter: blur(12px);
}

.app-help header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}

.app-help header button {
  min-width: 2.4rem;
  padding: .25rem;
}

.app-help p {
  margin: .7rem 0 0;
  line-height: 1.45;
}