Flag: first panel wider than its clip box
Card cut off at the right clip edge while keeping its left gutter.
Second card in the oversized panel, also flush against the edge.
Sibling panel card with the intended inset on both sides.
Pass: symmetric insets
Card with an even gutter on both sides of the clip box.
Second panel card, also properly inset.
Pass: deliberate peek
First peek card fully visible.
Second peek card fully visible.
Third card cut mid-card as a scroll affordance.
Fourth card entirely off-screen.
Pass: plain content, not cards
Unstyled text block flush against the edge is not a card.
Second plain block.
Pass: one box past the clip edge, no row
A lone box keeping its left gutter while it runs past the right edge.
Pass: a wrapper that hides x overflow
Card in a wrapper that hides sideways overflow and scrolls on y only.
Sibling panel card in the same wrapper.