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768px){.sidebar{display:none}.bottom-tab-bar{display:flex}.main-area{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.page-header{padding:16px 16px 14px;flex-wrap:wrap;gap:10px;align-items:flex-start}.page-header>div:first-child{flex:1 1 100%}.page-title{font-size:26px}.page-body{padding:14px 16px}.card-grid-3,.card-grid-4{grid-template-columns:1fr 1fr}.card-grid-2{grid-template-columns:1fr}.kanban-board{display:none}.mobile-hide{display:none!important}.mobile-only{display:flex!important}.badge-link{padding:7px 12px;font-size:12px;min-height:36px}.prompt-chips{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding:0 16px 12px;scrollbar-width:none}.prompt-chips::-webkit-scrollbar{display:none}.prompt-chip{flex:none}.chat-composer{padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom))}.chat-messages{padding:16px;gap:14px}.modal-overlay{align-items:flex-end;padding:0}.modal{border-radius:20px 20px 0 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