This example demonstrates scroll-linked animation, where the vertical scroll position of a container drives the rotation of a clock graphic rendered in SVG. As the user scrolls through text panels, a D3.js scale maps the container’s `scrollTop` value to rotation angles for the clock’s hour and minute hands, updated via `window.requestAnimationFrame`. The code uses D3 3.5.5 to create SVG elements, handle scroll and resize events, and synchronize the animation with the narrative’s pacing, which is set using viewport-height units.