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16px);padding:14px;border-radius:16px}}@media(max-width:560px){.assistant-message,.user-message{padding-left:0;padding-right:0}}@media(max-width:390px){.brand-mark{width:28px;height:28px}.brand strong{font-size:.94rem}.sidebar-mobile-new-chat,.sidebar-mobile-toggle{min-height:36px;padding-inline:10px;font-size:.78rem}.model-trigger{max-width:46vw}.persona-selector button{padding:0 10px}.empty-chat-state strong{font-size:1.85rem}}