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(max-width:860px){.studio{grid-template-columns:1fr}.tool-panel{position:static}.brand{min-width:0}.canvas-header{grid-template-columns:1fr}.title-row{flex-wrap:wrap}.live-meta{align-items:flex-start;max-width:none}.live-badge{text-align:left;max-width:none}.admin-lanes{grid-template-columns:1fr}}