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.panel-section{padding:16px}.diagram-shell{height:100%;min-height:0}.spacetime-diagram{min-height:0}.readout-panel{border-left:0;border-top:1px solid var(--line);grid-column:1/-1;grid-template-columns:1fr;height:100%;min-height:0;display:grid;overflow:auto}.readout-panel .panel-section{border-right:1px solid var(--line)}}@media (width<=640px){html,body{height:auto;min-height:100%;overflow:auto}body{display:block}#app{flex:none;height:auto;min-height:0}.app-shell{flex-direction:column;height:auto;min-height:0;display:flex}.diagram-shell{order:-1;width:100%;height:calc(100dvh - 56px);min-height:calc(100dvh - 56px)}.control-panel,.readout-panel{height:auto;overflow:visible}.control-panel{border-right:0;border-top:1px solid var(--line)}.layers-section{margin-top:0}.readout-panel{display:block}}@media (width<=520px){.panel-section{padding:16px}.title-section{display:none}.control-panel .panel-section{padding:12px 14px}.observer-switcher{gap:7px}.observer-choice{min-height:48px;padding:8px 9px}.diagram-shell{height:56vh;min-height:56vh}.visibility-toggle{justify-content:center;min-width:0;padding:0 8px}}