body {
  isolation: isolate;
}
.shark-background {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.14;
  filter: grayscale(1);
}
.sharks-toggle {
  position: fixed;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  padding: 8px 12px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--blue);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 5px;
}