What's underneath the scissor mechanism? Hey, we'll ask the questions here—you just finish taking this thing apart.

Wait, scratch that—reverse it.

Here's a look at the "Apple-designed rubber dome that stores more potential energy for a responsive key press."

Beneath that, a backlight assembly with an interesting pattern—more on that later.

And bordering all that, a thin black gasket—presumably to stop the bright bits from bleeding out past the edge of the key.

Compared once again with the desktop Magic Keyboard:

The two scissor mechanisms look nearly identical. The old Magic scissor is ever-so-slightly thicker (1.6 vs 1.38 mm).