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minmax(430px,.92fr)}.lesson-card{grid-template-columns:minmax(380px,.8fr) minmax(0,1.2fr)}.letter-stage{min-height:420px}.word-tile{min-height:330px}.word-tile img{max-width:210px}.trace-canvas,.trace-pane .trace-canvas{max-height:min(44vh,440px)}}@media(max-width:420px){.app-main{padding-left:12px;padding-right:12px}.home-actions,.word-grid,.quiz-options{gap:10px}.word-tile{min-height:166px}.top-bar{grid-template-columns:44px 1fr auto}}@media(max-width:680px){.trace-workspace{grid-template-columns:1fr}.trace-pane .trace-canvas{max-height:min(38vh,360px)}}