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var(--border);grid-template-columns:minmax(0,1fr);padding:24px;display:grid;overflow:visible}.principle-section{margin-bottom:0}.statusbar{flex-wrap:wrap;gap:8px 18px;min-height:48px;padding:10px 16px}.topbar{border-bottom:1px solid var(--border)}.viewport-heading h2{font-size:16px}.viewport-heading p{max-width:13em}}@media (width<=560px){.lab-body{flex-direction:column;display:flex}.workspace{order:0;height:60vh;min-height:360px}.controls-panel{border-right:0;border-top:1px solid var(--border);order:1;padding:24px}.info-panel{order:2}.mode-nav button{gap:4px;padding:0 9px;font-size:12px}.mode-nav small{font-size:9px}.brand h1{font-size:18px}.planet-option{padding:11px 12px}.planet-english{font-size:12px}.check-row{min-height:44px}.playback-buttons button{padding:12px;font-size:14px}.viewport-tools,.viewport-help{left:18px;right:18px}.viewport-help span{margin-left:12px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.is-experiment 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