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700px){.layout{flex-direction:column}.sources-panel{max-width:100%}.source-file{white-space:normal;overflow-wrap:anywhere;word-break:break-word}.sidebar{position:static;top:auto;width:100%;height:auto;min-height:0;border-right:none;border-bottom:1px solid var(--border)}.topic-grid{grid-template-columns:repeat(2,1fr);gap:12px}.topic{padding:18px;min-height:96px;grid-template-columns:30px 1fr;gap:12px}.topic-icon{width:30px;height:30px;font-size:22px}.topic span{font-size:1rem}.chat-footer{align-items:flex-end}.preferences-panel{width:100vw;border-left:none;box-shadow:none}.preferences-header,.preferences-panel-body{padding-left:16px;padding-right:16px}.app-snackbar{bottom:16px;width:calc(100vw - 18px);border-radius:12px;padding:11px 12px;gap:10px}.app-snackbar-message{font-size:13px}.prefs-footer{padding-left:0;padding-right:0}}@media (prefers-reduced-motion: 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