User requests (2026-10-21), CSS and docs only; no Props, public .d.ts unchanged.
- The viewer menu surface ends before the trailing strip like the SWHeader object area:
6px right radius (--hm-sw-header-object-radius), the same face and border, a 2px
header gap. Painted by the first strip segment over the empty group padding + gap
(4px more room below 1180px); heights, edges and button positions unchanged.
- --hm-sw-viewer-background: the Storybook viewer canvas solid #0a0a0b instead of the
gradient (viewer header only; SWHeader, Footer, Popup unchanged).