Move the mouse over the heading: it lights up only where you bring the light, and the letters it touches stay warm for a moment.

Only where you bring the light

Night walks through the fields, with a lantern and little else.

One letter at a time.

Every letter of the heading knows how far it is from the light. The close ones stay lit, the others sink into the shadow, and the closest one warms up and takes a while to cool down: the light leaves a trail behind it.