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var(--glass-border);border-radius:var(--radius-m);background:var(--glass-strong);backdrop-filter:blur(16px);max-width:min(560px,100% - 24px);box-shadow:var(--shadow-2);color:var(--silk);font-size:var(--small);margin:0;padding:6px 12px;position:absolute}.sandbox-run-status:empty{display:none}.sandbox-run-status[role=alert]{color:var(--hot)}.sandbox-simulation[data-panel-open=true] .sandbox-run-status:not([role=alert]){display:none}.sandbox-layout{grid-template-columns:minmax(0,1fr);height:100%;min-height:0;display:grid}.sandbox-stage{min-height:0;position:relative}.sandbox-stage .board-app{height:100%;min-height:0}.sandbox-stage .board-zoom,.sandbox-stage .board-game .board-footer{bottom:calc(max(var(--sandbox-dock,0px), var(--board-occluded-bottom,0px)) + 12px)}.sandbox-stage 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var(--border-strong);border-radius:var(--radius-l);background:var(--glass-strong);backdrop-filter:blur(16px)saturate(140%);box-shadow:var(--shadow-2);align-items:center;gap:4px;margin:0 12px 12px;padding:0 4px 0 14px;display:flex}.sandbox-selection>span{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.sandbox-selection .btn{padding-inline:10px}.sandbox-sheet{isolation:isolate;overscroll-behavior:contain;max-height:min(58dvh,100cqh - 64px);padding:18px max(16px, env(safe-area-inset-right)) 16px max(16px, env(safe-area-inset-left));border:1px solid var(--glass-border);border-radius:var(--radius-xl) var(--radius-xl) 0 0;background:var(--mask-raised);box-shadow:var(--shadow-3);border-bottom:0;position:relative;overflow-y:auto}.sandbox-sheet:before{content:"";background:color-mix(in srgb, var(--silk) 22%, transparent);border-radius:2px;width:36px;height:4px;position:absolute;top:7px;left:50%;translate:-50%}.sandbox-sheet 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ul{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px;margin:0 0 12px;padding:0;list-style:none;display:grid}.catalog-part{border:1px solid color-mix(in srgb, var(--chip-ink) 8%, transparent);border-radius:var(--radius-m);background:var(--chip);width:100%;min-height:44px;color:var(--chip-ink);transition:background-color var(--dur-fast) var(--ease-out), translate var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);text-align:left;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;align-items:center;gap:8px;padding:6px 10px;font-weight:600;display:flex}@media (pointer:coarse){.catalog-part{touch-action:pan-y}}@media (hover:hover) and (pointer:fine){.catalog-part:not(:disabled):hover{border-color:var(--border-strong);background:color-mix(in srgb, var(--silk) 6%, var(--chip));box-shadow:var(--shadow-2);translate:0 -1px}}.catalog-glyph{border:1px solid var(--border);border-radius:var(--radius-s);background:var(--mask-sunken);flex:none;place-items:center;width:30px;height:30px;display:grid}.catalog-glyph svg{fill:none;width:16px;height:16px;stroke:var(--silk);stroke-width:1.75px;stroke-linecap:round;stroke-linejoin:round}.catalog-part:active:not(:disabled){scale:.97}.sandbox-panel{z-index:17;right:0;bottom:var(--transport-height,61px);max-height:min(62dvh, calc(100% - var(--transport-height,61px) - 56px));overscroll-behavior:contain;padding:16px max(16px, env(safe-area-inset-right)) 24px max(16px, env(safe-area-inset-left));border:1px solid var(--glass-border);border-radius:var(--radius-xl) var(--radius-xl) 0 0;background:var(--mask-raised);box-shadow:var(--shadow-3);border-bottom:0;position:absolute;left:0;overflow-y:auto}@media (prefers-reduced-motion:no-preference){:root:not([data-reduced-motion=true]) .sandbox-panel,:root:not([data-reduced-motion=true]) .sandbox-sheet{animation:sandbox-rise var(--dur-scene) var(--ease-spring) both}}@keyframes sandbox-rise{0%{translate:0 24px}}.sandbox-simulation[data-panel-compact=true] .sandbox-panel{max-height:min(34dvh, calc(100% - var(--transport-height,61px) - 56px))}.sandbox-simulation[data-panel-open=true] .sandbox-stage .board-app{--board-occluded-bottom:var(--panel-height,0px)}.sandbox-simulation[data-panel-open=true] .sandbox-dock{display:none}.sandbox-panel-heading{justify-content:space-between;align-items:center;gap:8px;display:flex}.sandbox-panel h2{align-items:center;gap:8px;min-width:0;margin:0;font-size:1.125rem;display:flex}.sandbox-panel h2:focus{outline:none}.sandbox-panel h2 .icon{flex:none;width:20px;height:20px}.sandbox-panel h2[data-pass=true] .icon{color:var(--ok)}.sandbox-panel h2[data-pass=false] .icon{color:var(--hot)}.sandbox-panel-controls{align-items:center;gap:4px;display:flex}.sandbox-panel .sandbox-close{width:44px;padding:0}.sandbox-panel p{max-width:65ch;color:var(--silk-muted);margin-block:8px}.sandbox-panel fieldset{border:0;border-top:1px solid color-mix(in srgb, var(--silk) 10%, transparent);min-width:0;margin:16px 0 0;padding:16px 0 0}.sandbox-panel legend{float:left;width:100%;font-family:var(--font-display);letter-spacing:-.01em;margin-bottom:12px;padding:0;font-size:1.125rem;font-weight:650}.sandbox-panel legend+*{clear:both}.sandbox-panel h3{font-family:var(--font-ui);letter-spacing:0;margin:16px 0 4px;font-size:1rem}.sandbox-fields{grid-template-columns:minmax(0,1fr);gap:0 16px;display:grid}.sandbox-panel label{color:var(--silk-muted);gap:6px;margin-block:8px;display:grid}.sandbox-panel .sandbox-check{min-height:44px;color:var(--silk);align-items:center;gap:12px;margin-block:4px;font-size:1rem;display:flex}.sandbox-check input{appearance:none;border:1.5px solid var(--border-strong);background:var(--mask-sunken);cursor:pointer;width:22px;height:22px;transition:background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);border-radius:6px;flex:none;place-items:center;margin:0;display:grid}.sandbox-check input:before{content:"";border-left:2px solid var(--primary-foreground);border-bottom:2px solid var(--primary-foreground);width:10px;height:5px;transition:transform var(--dur-base) var(--ease-spring);margin-top:-3px;transform:scale(0)}.sandbox-check input:checked{border-color:var(--primary);background:var(--primary)}.sandbox-check input:checked:before{transform:scale(1)}.sandbox-check input:focus-visible{outline:2px solid var(--ring);outline-offset:2px}.sandbox-panel summary{min-height:44px;color:var(--silk);cursor:pointer;align-items:center;gap:10px;font-weight:600;list-style:none;display:flex}.sandbox-panel summary::-webkit-details-marker{display:none}.sandbox-panel summary:before{content:"";width:7px;height:7px;transition:rotate var(--dur-fast) var(--ease-out);border-bottom:1.75px solid;border-right:1.75px solid;flex:none;margin-inline:2px 4px;rotate:-45deg}.sandbox-panel details[open]>summary:before{rotate:45deg}.sandbox-panel details{margin-block:4px}.sandbox-class,.sandbox-target{border-bottom:1px solid color-mix(in srgb, var(--silk) 8%, transparent);margin-bottom:16px;padding-bottom:8px}.sandbox-panel small{color:var(--silk-muted);font-size:var(--small);overflow-wrap:anywhere;font-weight:400;display:block}.sandbox-panel [role=alert]{color:var(--silk);font-weight:600}.sandbox-panel .btn{margin-block:4px}.sandbox-form-actions{border-top:1px solid var(--hairline);background:var(--mask-raised);margin-top:8px;padding:12px 0;position:sticky;bottom:-24px}.sandbox-form-actions>div{flex-wrap:wrap;gap:8px;display:flex}.sandbox-form-actions [role=alert]{margin:0 0 12px}.sandbox-summary{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:16px 0 8px;display:grid}.sandbox-summary dt{color:var(--silk-muted)}.sandbox-summary dd{color:var(--silk);font-family:var(--font-mono);font-variant-numeric:tabular-nums;margin:2px 0 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env(safe-area-inset-right,0px));bottom:calc(var(--transport-height,61px) + 12px);border-bottom:1px solid var(--glass-border);border-radius:var(--radius-l);width:min(560px,100% - 24px);max-height:none;padding:20px 24px 24px;left:auto}.sandbox-simulation[data-panel-compact=true] .sandbox-panel{max-height:none}.sandbox-simulation[data-panel-open=true] .sandbox-stage .board-app{--board-occluded-bottom:0px}.sandbox-panel .sandbox-panel-size{display:none}.sandbox-panel h2{font-size:var(--title)}.sandbox-stage:has(.sandbox-inspector){--board-occluded-right:364px}.sandbox-simulation[data-panel-open=true] .sandbox-stage{--board-occluded-right:584px}.sandbox-inspector{z-index:12;top:64px;right:max(12px, env(safe-area-inset-right,0px));overscroll-behavior:contain;border:1px solid var(--glass-border);border-radius:var(--radius-l);width:min(340px,100% - 24px);max-height:calc(100% - 140px);box-shadow:var(--shadow-3);animation:sandbox-inspector-in var(--dur-base) var(--ease-out) both;position:absolute;overflow-y:auto}.sandbox-simulation[data-panel-open=true] .sandbox-inspector{display:none}}@keyframes sandbox-inspector-in{0%{translate:8px}}@media (prefers-reduced-motion:reduce){.sandbox-panel summary:before{transition:none}.sandbox-inspector{animation:none}}:root[data-reduced-motion=true] .sandbox-inspector{animation:none}.boards-intro{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px 32px;display:flex}.boards-intro .page-lead{margin-bottom:0}.boards-search{max-width:480px;margin:32px 0 0;display:block}.boards-search input{border:1px solid var(--border);border-radius:var(--radius-s);background:var(--mask-sunken);width:100%;min-height:44px;color:var(--silk);padding:0 14px}.boards-search input::placeholder{color:color-mix(in srgb, var(--silk-muted) 80%, transparent)}.boards-search input:focus-visible{outline:2px solid var(--ring);outline-offset:-2px}.boards-note{color:var(--silk-muted);margin:24px 0 0}.boards-list{gap:12px;margin:32px 0 0;padding:0;list-style:none;display:grid}.board-row{border:1px solid var(--border);border-radius:var(--radius-l);background:var(--mask-raised);box-shadow:var(--shadow-1);transition:translate var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-fast) var(--ease-out);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:4px 16px;padding-inline-end:8px;display:grid}@media (hover:hover) and (pointer:fine){.board-row:has(.board-row-link:hover){border-color:var(--border-strong);box-shadow:var(--shadow-2);translate:0 -2px}}.board-row-link{border-radius:var(--radius-l);min-width:0;color:var(--silk);grid-template-columns:44px minmax(0,1fr);align-items:center;gap:2px 14px;padding:16px 18px;text-decoration:none;display:grid}.board-row-mark{border:1px solid var(--border);border-radius:var(--radius-m);background:radial-gradient(circle at 1px 1px, var(--grid-dot) 1px, transparent 0) 0 0 / 8px 8px, var(--mask-sunken);grid-row:span 2;place-items:center;width:44px;height:44px;display:grid}.board-row-link .icon{width:20px;height:20px;color:var(--silk)}.board-row-where{border:1px solid var(--border);border-radius:var(--radius-s);font-size:var(--micro);padding:0 8px;font-weight:600;line-height:20px}@media (prefers-reduced-motion:no-preference){:root:not([data-reduced-motion=true]) .board-row{animation:boards-in var(--dur-scene) var(--ease-out) both;animation-delay:calc(var(--i,0) * 40ms)}}@keyframes boards-in{0%{opacity:0;translate:0 12px}}.board-row-name{letter-spacing:-.01em;overflow-wrap:anywhere;min-width:0;font-size:1.125rem;font-weight:600;line-height:1.3;display:block}.board-row-meta{color:var(--silk-muted);font-size:var(--small);flex-wrap:wrap;grid-column:2;align-items:center;gap:4px 12px;display:flex}.board-row-meta>span{display:block}@media (hover:hover) and (pointer:fine){.board-row-link:hover .board-row-name{text-underline-offset:.2em;text-decoration:underline 1px}}.board-row-confirm{flex-wrap:wrap;justify-content:end;align-items:center;gap:0 4px;padding-block:8px;display:flex}.board-row-confirm p{color:var(--silk);font-size:var(--small);margin:0 8px 0 0}.board-row-delete{--btn-ink:var(--fail-ink)}.board-row>[data-delete]{--btn-ink:var(--silk-muted)}.boards-empty{border:1px dashed var(--border-strong);border-radius:var(--radius-l);background:color-mix(in srgb, var(--mask-raised) 60%, transparent);justify-items:start;gap:8px;margin-top:40px;padding:32px;display:grid}.boards-empty svg{fill:none;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:156px;height:auto;margin-bottom:8px}.boards-empty h2{font-size:var(--title);margin:0}.boards-empty p{color:var(--silk-muted);margin:0}.boards-empty .btn{margin:8px 0 0 -12px}@media (width<=639px){.boards-intro .btn{width:100%}.board-row[data-confirm]{grid-template-columns:minmax(0,1fr)}.board-row-confirm{justify-content:start;padding:0 12px 12px 54px}}