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CC-C: Steam's Quick Access, restyledShown when the dashboard is on a page other than Steam's main window (a desktop window, an overlay app, SteamVR's Now Playing or Settings) and CC-A is not shipped. Same nodes, rows, order and focus order as Steam; rows 64 pp, capsule sliders 54 pp with the mute zone apart, switches at scale 1.45, five tabs as a capsule over the bottom edge.
Honest materialIn native mode the popup's panel glass frosts glassd's room map, in which the window is masked out; where nothing was captured behind the window it is a flat grey frost, as here. CSS-only: a tint (.78) with edges.
Why not Control Center hereCC-M draws in Steam's main window, which is not displayed on this page. Switching the dashboard to the Steam page just to show Control Center would hide the window the user is looking at (CC Q1, kept as the safe default).