.help-tip {
  position: fixed;
  z-index: 60;
  max-width: 20rem;
  padding: 0.45rem 0.65rem;
  background: #0f172a;
  color: #fff;
  border-radius: 0.5rem;
  font: 500 0.8rem/1.35 system-ui, sans-serif;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.25);
  pointer-events: none;
}

.help-tip[hidden] {
  display: none;
}