User requests (2026-10-21), CSS and docs only; no Props, public .d.ts unchanged. - .hm-sw-viewer-header__open-icon: the 16 x 16 icon itself (--hm-sw-viewer-icon-size), margin 0; the black icon outline (SWViewerIcon) is unchanged. - .hm-sw-viewer-header__open padding 0 12px 0 24px. - --hm-sw-viewer-button-height 34px -> 16px (user change, DESIGN_RULES token table updated with it).