- Add max-height: 92vh and overflow-y: auto to .setup-card - Widen .setup-card to 860px to fit 2-column deck grid - Change .deck-assignment-grid from vertical stack to 2-column grid so 4 player panels render in 2 rows instead of 4 - Tighten .deck-tab-content (170px) and .deck-precon-list (140px) - Make top gradient bar sticky on scroll - Responsive fallback to single column below 640px