html {
  scrollbar-width: none;
}
html::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}
.scroller {
  position: fixed;
  z-index: 890;
  top: 20px;
  bottom: 24px;
  right: max(34px, calc(env(safe-area-inset-right) + 34px));
  width: 14px;
  cursor: pointer;
}
.scroller[hidden] { display: none; }
.scroller__thumb {
  position: absolute;
  left: 3px;
  width: 8px;
  min-height: 64px;
  border-radius: 999px;
  background: linear-gradient(180deg, #9aeff6, #1a6fd4 40%, #0b4a94);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .72), 0 10px 22px rgba(11, 74, 148, .38);
  cursor: grab;
  touch-action: none;
}
.scroller.is-drag .scroller__thumb { cursor: grabbing; }