html::after {
  content: "";
  position: fixed;
  z-index: 9999;
  top: 0;
  right: 100%;
  left: 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, #ffb92f, #ffe07a);
  box-shadow: 0 0 18px rgba(255, 190, 58, 0.62);
  opacity: 0;
  transition: right 240ms ease, opacity 160ms ease;
}

html.is-navigating::after {
  right: 18%;
  opacity: 1;
}

html.is-navigating body {
  cursor: progress;
}

@media (prefers-reduced-motion: reduce) {
  html::after {
    transition: none;
  }
}