feat(frontend): landing redesign, mock/fake-data cleanup, Safari fix

Landing:
- Rewrote all landing copy (ru/en): removed the tracked-caps eyebrow
  chrome pattern everywhere, active-voice player-facing text
- ThemeStrip: full-bleed live-recolored ClickGui window instead of a
  boxed swatch panel; HudPlayground: full-size real HUD screen
- ShowcaseTeaser: dropped the fake "example" fallback cards, shows an
  honest empty state when there aren't 3 real configs yet
- Fixed VoxelScene parallax leaking outside the hero into the HUD
  section

Data accuracy: the module list/counts advertised InvisESP, BlockESP
and FakeLag — all three were removed from the mod earlier this
session as cheat modules. Corrected the catalogue and the 88/52
module-count claims to the real 86/50.

Design QOL pass: removed the same eyebrow-label chrome from the site
footer; replaced plausible-looking fake share codes (howItWorks demo
slots, the chat command typing demo) with an explicit placeholder
string so they read as illustration, not fabricated real data.

Perf: promoted .lv-lower-bg onto its own compositor layer
(will-change/translateZ) — a full-height, multi-gradient, masked,
continuously-animated background layer was repainting on every
scroll tick in Safari.

Claude-Session: https://claude.ai/code/session_01F1M1Jic1wTSn4igUENynmZ

frontend/src/shared/layout/Footer.tsx

@@ -25,14 +25,14 @@ export function Footer() {
         </div>
 
         <nav aria-label={t('footer.sectionProduct')} className="flex min-w-0 flex-col gap-2">
-          <span className="font-code text-xs uppercase tracking-[0.2em] text-ice">{t('footer.sectionProduct')}</span>
+          <span className="font-display text-sm font-bold text-snow">{t('footer.sectionProduct')}</span>
           {product.map((i) => (
             <Link key={i.to} to={i.to} className="text-sm text-frost hover:text-snow">{i.label}</Link>
           ))}
         </nav>
 
         <nav aria-label={t('footer.sectionProject')} className="flex min-w-0 flex-col gap-2">
-          <span className="font-code text-xs uppercase tracking-[0.2em] text-ice">{t('footer.sectionProject')}</span>
+          <span className="font-display text-sm font-bold text-snow">{t('footer.sectionProject')}</span>
           {project.map((i) => (
             <a key={i.label} href={i.href} target="_blank" rel="noreferrer" className="text-sm text-frost hover:text-snow">
               {i.label}