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11px}@media(max-width:980px){.messenger-app{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}.messenger-app.sidebar-collapsed{grid-template-columns:1fr;grid-template-rows:64px minmax(0,1fr)}.account-sidebar{grid-template-columns:64px minmax(0,1fr);height:168px;min-height:0;border-right:0;border-bottom:1px solid #e3e6eb}.account-sidebar.collapsed{grid-template-columns:64px;height:64px;min-height:0}.rail{min-height:168px;padding:12px 6px;gap:10px}.rail-button,.rail-user{width:46px;height:46px}.account-list-panel{padding:12px}.account-items{grid-auto-flow:column;grid-auto-columns:minmax(220px,1fr);max-height:none;overflow-x:auto;overflow-y:hidden;padding-bottom:4px}.account-item{min-height:72px;grid-template-columns:minmax(0,1fr) auto}.account-item-main{min-height:56px;grid-template-columns:44px minmax(0,1fr)}.account-avatar,.conversation-avatar{width:44px;height:44px}.messenger-main{height:calc(100vh - 168px);min-height:0;padding:8px}.sidebar-collapsed .messenger-main{height:calc(100vh - 64px)}.compact-topbar{height:auto;min-height:50px}.conversation-head{min-height:112px;align-items:flex-start;flex-direction:column;gap:10px}.engine-tabs{width:100%}.engine-tabs button{flex:1;min-width:0;font-size:16px;padding:0 8px}.conversation-actions{margin-left:0;align-self:flex-end}.chat-scroll{padding:20px 12px}.chat-message,.chat-message.user{max-width:100%;grid-template-columns:38px minmax(0,1fr)}.chat-message.user .message-avatar{grid-column:1}.chat-message.user .chat-message-main{grid-column:2}.message-avatar{width:38px;height:38px}.chat-bubble{font-size:15px;padding:13px}.chat-composer{min-height:104px;margin:0 0 8px;padding:12px}.chat-composer textarea{font-size:18px;min-height:40px;max-height:110px}.composer-engine{min-width:86px;padding:0 12px}.topbar-state{width:auto}.remote-desktop-body{grid-template-columns:1fr}.remote-desktop-sidebar{max-height:260px;border-right:0;border-bottom:1px solid #e5eaf0}.remote-desktop-viewer{min-height:420px;padding:8px}.remote-desktop-frame-scale{min-width:620px;min-height:420px}}