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270px);min-height:640px;position:relative;overflow:hidden}.surface-canvas{touch-action:none;position:absolute;inset:70px 0 90px}.surface-canvas canvas{width:100%;height:100%;display:block}.surface-stage-top{z-index:1;justify-content:space-between;align-items:center;gap:12px;display:flex;position:absolute;top:20px;left:20px;right:20px}.surface-stage-bottom{justify-content:space-between;align-items:center;gap:16px;display:flex;position:absolute;bottom:34px;left:24px;right:24px}.surface-map-caption{gap:4px;display:grid}.surface-map-caption strong{font-size:14px;font-weight:500}.surface-map-caption span{color:var(--lb-muted);font-variant-numeric:tabular-nums;font-size:11px}.surface-gesture{color:var(--lb-muted);font-size:10px;position:absolute;bottom:12px;left:24px}.surface-message{text-align:center;max-width:90%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.surface-notes{max-width:1584px;color:var(--lb-muted);margin:20px auto 0;padding-left:260px;font-size:12px;line-height:1.7}.surface-notes>p{margin:0 0 8px}.surface-notes summary{cursor:pointer;min-height:32px;line-height:32px}.surface-notes details a{min-height:44px;display:inline-block}.surface-key{flex-wrap:wrap;gap:8px 20px;margin:12px 0;padding:0;list-style:none;display:flex}.surface-key li{align-items:center;gap:7px;font-size:11px;display:flex}.surface-key i{border-radius:1px;width:8px;height:8px}.surface-footer{border-top:1px solid var(--lb-line);color:var(--lb-muted);justify-content:space-between;gap:16px;margin:24px auto 0;padding-top:16px;font-size:10px;display:flex}@media (hover:hover){.surface-study a:hover{text-decoration:underline}}@media (min-width:1700px){.surface-heading,.surface-header,.surface-footer{max-width:1584px;margin-left:auto;margin-right:auto}.surface-stage{height:760px}}@media (max-width:1100px){.surface-study{padding:0 24px 20px}.surface-workspace{grid-template-columns:205px minmax(0,1fr);gap:20px}.surface-heading p{font-size:12px}.surface-heading h1{font-size:29px}.surface-evidence{display:none}.surface-stage-bottom{flex-direction:column;align-items:start;gap:12px}.surface-canvas{bottom:140px}.surface-notes{padding-left:225px}.surface-stage{min-height:640px}}@media (max-width:760px){.surface-study{padding:0 14px 20px}.surface-header{height:64px}.surface-header>span{display:none}.surface-header>a:last-child{font-size:12px}.surface-heading{padding:24px 0;display:block}.surface-heading h1{font-size:28px}.surface-heading p{margin-top:12px}.surface-workspace{flex-direction:column;gap:24px;display:flex}.surface-stage{order:-1;width:100%;height:530px;min-height:530px}.surface-canvas{inset:66px 0 140px}.surface-stage-top{top:12px;left:12px;right:12px}.surface-views{width:100%}.surface-views .lb-toggle{text-align:center;flex:1;padding:0 8px;font-size:11px}.surface-stage-bottom{left:16px;right:16px}.surface-gesture{font-size:9px;left:16px}.surface-sidebar{grid-template-columns:1fr 1fr;gap:0 20px;display:grid}.surface-sidebar fieldset:first-child{grid-column:1/-1}.surface-layer-options{grid-template-columns:repeat(3,minmax(0,1fr))}.surface-layer-options .lb-toggle{padding:10px 8px}.surface-layer-options .lb-toggle>span{font-size:12px}.surface-layer-options .lb-toggle small{font-size:10px}.surface-toggles>label{min-height:44px}.surface-source,.surface-editor-link{grid-column:1/-1}.surface-source>svg{height:130px}.surface-notes{padding-left:0}.surface-footer{flex-direction:column;gap:8px}}