fix(ptica): button font-size — :where() so component classes win over reset

The scoped reset `.pticaRoot button { font: inherit }` had specificity (0,1,1),
beating single-class button rules like .navItem (9px), .tab (11px), .detailBtn
(9px), .ptab — so every cockpit button was forced back to the root 13px. The
oversized labels overflowed the 96px left rail (icons/text shoved right of
centre, «неровное») and bloated tabs/buttons across the cockpit.

Wrap the selector in :where(button) → specificity (0,1,0); the per-component
classes (later in source) now win their font-size, matching the prototype's
bare `button {}`. Verified on a live local render: rail labels 13→9px and every
item re-centres at 47.5px; tabs 11px; detail buttons 9px.

frontend/src/app/site-finder/analysis/[cad]/ptica/ptica.module.css

@@ -92,7 +92,12 @@
     100% 100%;
 }
 
-.pticaRoot button {
+/* `:where(button)` keeps specificity at (0,1,0) so per-component button classes
+   (.navItem 9px, .tab 11px, .detailBtn 9px, .ptab …) win their font-size. With a
+   bare `.pticaRoot button` (0,1,1) the `font: inherit` reset beat those classes
+   and forced every cockpit button back to the root 13px — overflowing the 96px
+   rail and oversizing tabs/buttons. Matches the prototype's bare `button {}`. */
+.pticaRoot :where(button) {
   font: inherit;
   cursor: pointer;
   color: inherit;