- The full-height previous/next strips beside the card are gone: the panel's
transport row and Shift+arrows step on their own, and the video gains the
7rem the strips' gutters took.
- Close is one icon in the card's top-right corner (the wide panel's head,
the stacked card's title row).
- The panel's description is cut to three lines with More / Less
(ClampedText now takes the linked text as children).
- Wide, the panel shuts to a 2.75rem strip (close, open, previous, next) for
a bigger video; it stays shut while the queue steps on, and a video opened
from a card starts it open. Focus moves to the counterpart toggle.
- The wheel has one meaning per place: over a panel (or the stacked card)
with something to scroll it only scrolls, never falling through to the
volume at the end; over the video, or a panel that fits, it is the volume.
- A long channel name is cut on the panel's line instead of running the
20rem panel into a sideways scroll.