:root{--topbar-h:72px;--topbar-gap:.75rem;--topbar-bg:color-mix(in srgb,#171717 92%,#02020200);--topbar-border:color-mix(in srgb,#171717 92%,#02020200);--shell-max:99%;--shell-side-pad:5px;--stack-rail-min:55px;--stack-rail-max:60px;--stack-rail-fluid:7.2vw;--stack-rail-w:clamp(var(--stack-rail-min),var(--stack-rail-fluid),var(--stack-rail-max));--vnav-radius:10rem;--vnav-gap:.2rem;--art-rail-base:300px;--art-rail-w:var(--art-rail-base);--sec-rail-base:300px;--sec-rail-w:var(--sec-rail-base);--rail-scroll-pad:0px;--search-max-w:960px;--brand-accent:#76e0b2;--panel-bg:rgba(255,255,255,.03);--mega-max-w:1280px;--mega-pad:1.25rem;--mega-bg:#fff;--mega-border:#e5e7eb;--mega-radius:12px;--mega-shadow:0 24px 60px rgba(0,0,0,.35);--mega-text:#111827;--mega-muted:#6b7280;--mega-icon-bg:#f1f5f9;--mega-inner-bq:#fff;--mega-gap:16px;--mega-safe-bottom:env(safe-area-inset-bottom,0px);--edge-pad:16px}