.fl-shape-stage{--shape-heading:#172033;--shape-text:#26344d;--shape-muted:#53627a;--shape-workspace:#f6fbff;--shape-panel:#fff;--shape-border:#9fb7d2;--shape-grid:#c5d5e7;--shape-primary:#3157a4;--shape-primary-text:#fff;--shape-accent:#8057b7;--shape-selected:#e8e6ff;--shape-success:#e4f8ed;--shape-success-border:#258659;--shape-try:#fff4dc;--shape-try-border:#b96b0a;--shape-focus:#f59e0b;color:var(--shape-text);gap:1rem;min-width:0;display:grid}:root[data-theme=dark] .fl-shape-stage{--shape-heading:#f4f7ff;--shape-text:#e3ebf8;--shape-muted:#bcc8da;--shape-workspace:#142238;--shape-panel:#1d2d43;--shape-border:#587391;--shape-grid:#47627f;--shape-primary:#9ab7ff;--shape-primary-text:#101c32;--shape-accent:#c8a8f2;--shape-selected:#353a68;--shape-success:#173f32;--shape-success-border:#58d49a;--shape-try:#4a351d;--shape-try-border:#f6b84e;--shape-focus:#fbbf24}.fl-shape-stage h3,.fl-shape-stage h4,.fl-shape-stage strong{color:var(--shape-heading)}.fl-shape-stage button,.fl-shape-stage input{font:inherit}.fl-shape-stage button:focus-visible,.fl-shape-stage [role=button]:focus-visible,.fl-shape-stage [role=gridcell]:focus-visible,.fl-shape-stage svg [role=button]:focus-visible,.fl-shape-stage input:focus-visible{outline:3px solid var(--shape-focus);outline-offset:3px}.fl-shape-stage-header{gap:.35rem;display:grid}.fl-shape-stage-header h3,.fl-shape-stage-header p,.fl-shape-eyebrow,.fl-shape-instruction,.fl-shape-conclusion,.fl-shape-help{margin:0}.fl-shape-stage-header h3{font-size:clamp(1.45rem,4vw,2rem);line-height:1.15}.fl-shape-stage-header>p:last-child,.fl-shape-help{color:var(--shape-muted)}.fl-shape-eyebrow{color:var(--shape-primary);letter-spacing:.11em;text-transform:uppercase;font-size:.76rem;font-weight:900}.fl-shape-instruction{font-size:1.04rem;font-weight:780}.fl-shape-primary,.fl-shape-secondary,.fl-shape-feature-nav button,.fl-shape-line-options button,.fl-shape-quick-tabs button,.fl-shape-candidates button,.fl-shape-replacement-bank button{border:1px solid var(--shape-border);cursor:pointer;border-radius:.75rem;min-height:2.75rem;padding:.65rem .9rem}.fl-shape-primary{background:var(--shape-primary);border-color:var(--shape-primary);color:var(--shape-primary-text);justify-self:start;font-weight:850}.fl-shape-secondary,.fl-shape-feature-nav button,.fl-shape-line-options button,.fl-shape-quick-tabs button,.fl-shape-candidates button,.fl-shape-replacement-bank button{background:var(--shape-panel);color:var(--shape-text)}.fl-shape-stage button:disabled{cursor:not-allowed;filter:saturate(.45)}.fl-shape-action-row,.fl-shape-feature-nav,.fl-shape-line-options,.fl-shape-quick-tabs,.fl-shape-replacement-bank{flex-wrap:wrap;gap:.65rem;display:flex}.fl-shape-feature-nav button.is-current,.fl-shape-line-options button.is-selected,.fl-shape-quick-tabs button.is-current,.fl-shape-candidates button.is-selected,.fl-shape-replacement-bank button.is-selected{background:var(--shape-selected);border-color:var(--shape-primary);box-shadow:inset 0 0 0 1px var(--shape-primary)}.fl-shape-feature-nav button.is-complete,.fl-shape-quick-tabs button.is-complete{border-color:var(--shape-success-border)}.fl-shape-round-progress{align-items:center;gap:.5rem;display:flex}.fl-shape-round-progress span{background:var(--shape-panel);border:2px solid var(--shape-border);color:var(--shape-muted);border-radius:999px;justify-content:center;align-items:center;width:2rem;height:2rem;font-weight:850;display:inline-flex}.fl-shape-round-progress span.is-current{border-color:var(--shape-primary);color:var(--shape-primary)}.fl-shape-round-progress span.is-complete{background:var(--shape-success);border-color:var(--shape-success-border);color:var(--shape-heading)}.fl-shape-feedback{background:var(--shape-panel);border:1px solid var(--shape-border);border-left-width:.35rem;border-radius:.75rem;min-height:3rem;margin:0;padding:.8rem 1rem}.fl-shape-feedback.is-correct{background:var(--shape-success);border-color:var(--shape-success-border)}.fl-shape-feedback.is-try-again{background:var(--shape-try);border-color:var(--shape-try-border)}.fl-shape-conclusion,.fl-shape-fold-evidence{background:var(--shape-success);border:1px solid var(--shape-success-border);color:var(--shape-heading);border-radius:.75rem;padding:.85rem 1rem}.fl-shape-sort-workspace,.fl-shape-trace-workspace,.fl-shape-rotation-workspace,.fl-shape-build-layout,.fl-shape-symmetry-workspace,.fl-shape-reflection-layout,.fl-shape-detective-board,.fl-shape-quick-panel{background:var(--shape-workspace);border:1px solid var(--shape-border);border-radius:1rem;min-width:0;padding:1rem}.fl-shape-icon{width:100%;height:100%;max-height:8rem;display:block;overflow:visible}.fl-shape-icon circle,.fl-shape-icon polygon,.fl-shape-icon rect{fill:#9bd6ec;stroke:#244f78;stroke-linejoin:round;stroke-width:4px}:root[data-theme=dark] .fl-shape-icon circle,:root[data-theme=dark] .fl-shape-icon polygon,:root[data-theme=dark] .fl-shape-icon rect{fill:#397da0;stroke:#d5efff}.fl-shape-bank{grid-template-columns:repeat(6,minmax(6.2rem,1fr));align-items:stretch;gap:.65rem;min-height:8.5rem;display:grid}.fl-shape-placement-item{touch-action:none}.fl-shape-card{background:var(--shape-panel);border:2px solid var(--shape-border);color:var(--shape-text);border-radius:.85rem;place-items:center;gap:.25rem;min-height:8.5rem;padding:.55rem;display:grid}.fl-shape-card.is-selected,.fl-shape-placement-item.is-selected{border-color:var(--shape-primary);box-shadow:inset 0 0 0 2px var(--shape-primary)}.fl-shape-card.is-dragging{border-style:dashed}.fl-shape-card-slot{justify-content:center;align-items:center;width:5.2rem;height:5.2rem;display:flex}.fl-shape-bank-placeholder{border:2px dashed var(--shape-grid);border-radius:.85rem;min-height:8.5rem}.fl-shape-sort-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;margin-top:1rem;display:grid}.fl-shape-sort-group{background:var(--shape-panel);border:2px dashed var(--shape-border);border-radius:.9rem;min-height:11rem;padding:.8rem}.fl-shape-sort-group>div{flex-wrap:wrap;gap:.55rem;margin-top:.65rem;display:flex}.fl-shape-sort-group .fl-shape-card{width:7.2rem;min-height:7.3rem}.fl-shape-sort-group .fl-shape-card-slot{width:4rem;height:4rem}.is-shape-drag-over{box-shadow:inset 0 0 0 3px var(--shape-selected);border-color:var(--shape-primary)!important}.fl-shape-drag-preview{color:#172033;height:var(--shape-preview-height);left:var(--shape-preview-left);pointer-events:none;max-width:min(10rem,42vw);min-height:3.5rem;max-height:9.5rem;top:var(--shape-preview-top);touch-action:none;width:var(--shape-preview-width);z-index:1000;background:#fff;border:2px solid #3157a4;border-radius:.8rem;place-items:center;padding:.45rem;display:grid;position:fixed;overflow:visible;transform:none}.fl-shape-drag-preview-content{place-items:center;width:100%;max-width:100%;height:100%;max-height:100%;display:grid}:root[data-theme=dark] .fl-shape-drag-preview{color:#f4f7ff;background:#1d2d43;border-color:#9ab7ff}.fl-shape-drag-preview .fl-shape-icon{height:4.5rem}.fl-shape-trace-workspace{grid-template-columns:minmax(15rem,1fr) minmax(10rem,.55fr);align-items:center;gap:1rem;display:grid}.fl-shape-trace-svg{background:var(--shape-panel);border:1px solid var(--shape-border);border-radius:.9rem;justify-self:center;width:100%;max-width:23rem;height:min(22rem,55vw)}.fl-shape-trace-fill{fill:#dceeff;stroke:none}.fl-shape-trace-svg line,.fl-shape-trace-svg>circle{cursor:pointer;fill:var(--shape-panel);stroke:#335f89;stroke-linecap:round;stroke-width:7px;vector-effect:non-scaling-stroke}.fl-shape-trace-svg line.is-counted,.fl-shape-trace-svg>circle.is-counted{fill:#ffe48b;stroke:#9c5d00}.fl-shape-trace-svg>circle{fill:#0000}.fl-shape-count-panel{background:var(--shape-panel);border:1px solid var(--shape-border);border-radius:.8rem;padding:1rem}.fl-shape-count-panel p{margin:.3rem 0}.fl-shape-rotation-workspace{place-items:center;gap:1rem;display:grid;overflow:hidden}.fl-shape-rotating-model{height:12rem;transform:rotate(var(--shape-angle));transform-origin:50%;width:12rem;position:relative}.fl-shape-rotation-handle{background:var(--shape-panel);border:3px solid var(--shape-primary);color:var(--shape-heading);cursor:grab;touch-action:none;border-radius:999px;justify-content:center;align-items:center;width:2.9rem;height:2.9rem;display:flex;position:absolute;top:-.6rem;left:calc(50% - 1.45rem)}.fl-shape-rotation-slider{align-items:center;gap:.8rem;width:100%;max-width:26rem;font-weight:800;display:flex}.fl-shape-rotation-slider input{width:100%;min-height:2.75rem}.fl-shape-candidate-fieldset{border:1px solid var(--shape-border);border-radius:.9rem;min-width:0;margin:0;padding:1rem}#fl-shape-turn-question{margin:.25rem 0 -.35rem}.fl-shape-candidates,.fl-shape-quick-shapes{grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;display:grid}.fl-shape-candidates button,.fl-shape-quick-shapes button{background:var(--shape-panel);border:2px solid var(--shape-border);color:var(--shape-text);border-radius:.85rem;place-items:center;gap:.35rem;min-height:8rem;padding:.7rem;display:grid}.fl-shape-candidates .fl-shape-icon,.fl-shape-quick-shapes .fl-shape-icon{height:6rem}.fl-shape-build-layout{grid-template-columns:minmax(9rem,.7fr) minmax(17rem,1.3fr);gap:1rem;display:grid}.fl-shape-piece-tray{background:var(--shape-panel);border:1px dashed var(--shape-border);border-radius:.85rem;flex-wrap:wrap;align-content:start;gap:.75rem;min-height:8rem;padding:.8rem;display:flex}.fl-shape-build-piece{background:#91d6e9;border:2px solid #244f78;width:6.5rem;height:6.5rem;min-height:2.75rem;padding:0}.fl-shape-build-piece>span{width:100%;height:100%;display:block}.fl-shape-build-piece.is-triangle{filter:drop-shadow(0 0 1px #244f78)}.fl-shape-build-board{background:var(--shape-panel);border:1px solid var(--shape-border);border-radius:.9rem;place-items:center;min-height:18rem;padding:1rem;display:grid}.fl-shape-build-targets{grid-template-columns:repeat(2,7rem);display:grid}.fl-shape-build-target{border:2px dashed var(--shape-border);justify-content:center;align-items:center;width:7rem;height:7rem;display:flex}.fl-shape-build-target .fl-shape-build-piece{width:100%;height:100%}.fl-shape-build-board.is-triangles-square .fl-shape-build-targets{border:2px solid #244f78;width:10rem;height:10rem;position:relative}.fl-shape-build-board.is-triangles-square .fl-shape-build-target{border:0;width:10rem;height:10rem;position:absolute;top:0;left:0}.fl-shape-square-diagonal{pointer-events:none;z-index:3;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.fl-shape-square-diagonal line{stroke:#244f78;stroke-linecap:square;stroke-width:1.4px}.fl-shape-build-board.is-triangles-square .fl-shape-build-piece{border:0;width:100%;height:100%}.fl-shape-combined-rectangle{grid-template-columns:repeat(2,7rem);margin-bottom:1.5rem;display:grid}.fl-shape-build-layout.is-decomposition{grid-template-columns:minmax(0,1fr)}.fl-shape-decomposition-areas{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:2rem;width:100%;display:grid}.fl-shape-build-area{place-items:center;gap:.75rem;display:grid}.fl-shape-build-area h4,.fl-shape-build-area .fl-shape-combined-rectangle{margin:0}.fl-shape-build-board.is-rectangle-two-squares .fl-shape-build-targets{column-gap:clamp(2rem,7vw,3rem)}.fl-shape-whole-slot{border:2px solid #244f78;width:7rem;height:7rem}.fl-shape-whole-slot+.fl-shape-whole-slot{border-left:0}.fl-shape-whole-slot .fl-shape-build-piece{border:0;width:100%;height:100%}.fl-shape-build-placeholder,.fl-shape-grid-piece-placeholder{border:2px dashed var(--shape-grid);border-radius:.6rem;width:3.5rem;height:3.5rem}.fl-shape-symmetry-workspace{grid-template-columns:minmax(15rem,1fr) minmax(10rem,.6fr);align-items:center;gap:1rem;display:grid}.fl-shape-symmetry-workspace svg,.fl-shape-quick-line svg{background:var(--shape-panel);border:1px solid var(--shape-border);border-radius:.9rem;justify-self:center;width:100%;max-width:28rem;max-height:22rem}.fl-shape-symmetry-model{fill:#b9def4;stroke:#244f78;stroke-linejoin:round;stroke-width:4px}.fl-shape-candidate-line{fill:none;stroke:#9c3f65;stroke-dasharray:8 6;stroke-width:5px}.fl-shape-overlap-line{fill:none;stroke:#16734a;stroke-width:10px}.fl-shape-symmetry-workspace.is-tested.is-overlap .fl-shape-symmetry-model{fill:#b9ebd3}.fl-shape-symmetry-workspace.is-tested.is-mismatch .fl-shape-symmetry-model{fill:var(--shape-try)}.fl-shape-mismatch-evidence path{fill:none;stroke:var(--shape-try-border);stroke-linecap:round;stroke-width:5px}.fl-shape-line-options{flex-direction:column;align-content:center}.fl-shape-line-options button{justify-content:flex-start;align-items:center;gap:.65rem;display:flex}.fl-shape-line-option-label{flex:auto}.fl-shape-line-result{background:var(--shape-workspace);border:1px solid var(--shape-border);white-space:nowrap;border-radius:999px;align-items:center;gap:.3rem;margin-left:auto;padding:.3rem .5rem;font-size:.72rem;font-weight:850;line-height:1.15;display:inline-flex}.fl-shape-line-result:before{content:"✓";font-size:.8rem}.fl-shape-line-options button.is-tested-does-not-match .fl-shape-line-result:before{content:"×";font-size:1rem}.fl-shape-line-options button.is-tested-matches .fl-shape-line-result{background:var(--shape-success);border-color:var(--shape-success-border)}.fl-shape-line-options button.is-tested-does-not-match .fl-shape-line-result{background:var(--shape-try);border-color:var(--shape-try-border)}.fl-shape-line-preview{background:var(--shape-workspace);border:1px solid var(--shape-border);border-radius:.35rem;flex:0 0 2.5rem;justify-content:center;align-items:center;width:2.5rem;height:2rem;display:flex;position:relative}.fl-shape-line-preview>span{background:var(--shape-accent);width:3px;height:1.6rem;display:block}.fl-shape-line-preview.is-horizontal>span{width:1.9rem;height:3px}.fl-shape-line-preview.is-diagonal-a>span,.fl-shape-line-preview.is-diagonal-b>span,.fl-shape-line-preview.is-slant>span{transform:rotate(45deg)}.fl-shape-line-preview.is-diagonal-b>span{transform:rotate(-45deg)}.fl-shape-line-preview.is-slant>span{transform:rotate(28deg)}.fl-shape-line-preview.is-none:before,.fl-shape-line-preview.is-none:after{background:var(--shape-accent);content:"";width:1.6rem;height:3px;position:absolute;transform:rotate(45deg)}.fl-shape-line-preview.is-none:after{transform:rotate(-45deg)}.fl-shape-reflection-layout{grid-template-columns:minmax(8rem,.5fr) minmax(18rem,1.5fr);gap:1rem;display:grid}.fl-shape-reflection-board{width:100%;min-width:0}.fl-shape-reflection-grid{grid-template-columns:repeat(6,minmax(2.8rem,1fr));min-width:0;max-width:36rem;margin:0 auto;display:grid}.fl-shape-grid-cell{aspect-ratio:1;background:var(--shape-panel);border-bottom:1px solid var(--shape-grid);border-right:1px solid var(--shape-grid);justify-content:center;align-items:center;min-height:2.8rem;display:flex;position:relative}.fl-shape-grid-cell:nth-child(-n+6){border-top:1px solid var(--shape-grid)}.fl-shape-grid-cell:nth-child(6n+1){border-left:1px solid var(--shape-grid)}.fl-shape-grid-cell.is-before-line{border-right:4px solid var(--shape-accent)}.fl-shape-grid-cell.is-active-target{background:var(--shape-selected);box-shadow:inset 0 0 0 3px var(--shape-primary)}.fl-shape-grid-piece,.fl-shape-fixed-tile,.fl-shape-detective-piece{background:0 0;border:2px solid #0000;border-radius:.55rem;justify-content:center;align-items:center;width:min(3.5rem,90%);height:min(3.5rem,90%);min-height:2.75rem;padding:.2rem;display:flex}.fl-shape-fixed-tile{border-color:var(--shape-border)}.fl-shape-tile-icon{background:#58aeca;border:3px solid #244f78;width:2.25rem;height:2.25rem;display:block}.fl-shape-tile-icon.is-circle{border-radius:999px}.fl-shape-tile-icon.is-triangle{clip-path:polygon(50% 3%,97% 94%,3% 94%)}.fl-shape-tile-icon.is-square{border-radius:.2rem}.fl-shape-tile-icon.is-star{clip-path:polygon(50% 0,61% 34%,98% 35%,68% 56%,79% 93%,50% 71%,21% 93%,32% 56%,2% 35%,39% 34%)}.fl-shape-grid-piece .fl-shape-tile-icon,.fl-shape-detective-piece .fl-shape-tile-icon{width:100%;height:100%}.fl-shape-fold-evidence{margin:0}.fl-shape-detective-board{gap:1rem;display:grid}.fl-shape-detective-piece{cursor:pointer}.fl-shape-detective-piece.is-selected{border-color:var(--shape-primary);box-shadow:0 0 0 2px var(--shape-selected)}.fl-shape-replacement-bank{justify-content:center}.fl-shape-replacement-bank button{align-items:center;gap:.45rem;display:flex}.fl-shape-replacement-piece{background:var(--shape-panel);border:2px solid var(--shape-border);color:var(--shape-text);touch-action:none;border-radius:.7rem;align-items:center;gap:.45rem;min-height:3.25rem;padding:.55rem .75rem;display:flex}.fl-shape-replacement-piece.is-selected{border-color:var(--shape-primary);box-shadow:inset 0 0 0 2px var(--shape-primary)}.fl-shape-replacement-bank .fl-shape-tile-icon{width:1.8rem;height:1.8rem}.fl-shape-quick-panel{gap:1rem;display:grid}.fl-shape-quick-panel h4{margin:0}.fl-shape-quick-shapes{grid-template-columns:repeat(6,minmax(5.5rem,1fr))}.fl-shape-quick-shapes button{cursor:pointer;isolation:isolate;pointer-events:auto;position:relative}.fl-shape-quick-shapes button.is-selected{background:var(--shape-selected);border-color:var(--shape-primary);box-shadow:inset 0 0 0 2px var(--shape-primary), 0 3px 0 color-mix(in srgb, var(--shape-primary) 32%, transparent)}.fl-shape-selection-status{color:var(--shape-muted);align-items:center;gap:.3rem;min-height:1.25rem;font-size:.78rem;font-weight:750;display:flex}.fl-shape-quick-shapes button.is-selected .fl-shape-selection-status{color:var(--shape-heading)}.fl-shape-quick-shapes button.is-selected .fl-shape-selection-status:before{background:var(--shape-primary);color:var(--shape-primary-text);content:"✓";border-radius:999px;justify-content:center;align-items:center;width:1.15rem;height:1.15rem;font-size:.7rem;display:inline-flex}.fl-shape-quick-turn,.fl-shape-quick-line{grid-template-columns:minmax(9rem,.5fr) minmax(15rem,1.5fr);align-items:center;gap:1rem;display:grid}.fl-shape-quick-target{background:var(--shape-panel);border:1px solid var(--shape-border);border-radius:.85rem;height:9rem;padding:.5rem}@media (max-width:900px){.fl-shape-bank,.fl-shape-quick-shapes{grid-template-columns:repeat(3,minmax(6rem,1fr))}}@media (max-width:760px){.fl-shape-sort-groups,.fl-shape-trace-workspace,.fl-shape-build-layout,.fl-shape-decomposition-areas,.fl-shape-symmetry-workspace,.fl-shape-reflection-layout,.fl-shape-quick-turn,.fl-shape-quick-line{grid-template-columns:minmax(0,1fr)}.fl-shape-line-options{flex-direction:row}.fl-shape-reflection-grid{grid-template-columns:repeat(6,minmax(2.75rem,1fr))}.fl-shape-piece-tray{min-height:5.5rem}}@media (max-width:460px){.fl-shape-sort-workspace,.fl-shape-trace-workspace,.fl-shape-rotation-workspace,.fl-shape-build-layout,.fl-shape-symmetry-workspace,.fl-shape-reflection-layout,.fl-shape-detective-board,.fl-shape-quick-panel{padding:.72rem}.fl-shape-bank,.fl-shape-quick-shapes{grid-template-columns:repeat(2,minmax(0,1fr))}.fl-shape-candidates{grid-template-columns:minmax(0,1fr)}.fl-shape-reflection-grid{grid-template-columns:repeat(6,minmax(2.6rem,1fr))}.fl-shape-grid-cell{min-height:2.6rem}.fl-shape-grid-piece,.fl-shape-fixed-tile,.fl-shape-detective-piece{min-height:2.45rem}.fl-shape-build-targets,.fl-shape-combined-rectangle{transform:scale(.88)}}@media (prefers-reduced-motion:reduce){.fl-shape-stage *,.fl-shape-stage :before,.fl-shape-stage :after,.fl-shape-drag-preview{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
.fl-patterns-stage{--fl-patterns-ink:#172033;--fl-patterns-muted:#526178;--fl-patterns-line:#b9c8da;--fl-patterns-panel:#f7fbff;--fl-patterns-surface:#fff;--fl-patterns-soft:#e9f5ff;--fl-patterns-accent:#176c73;--fl-patterns-accent-strong:#0b555b;--fl-patterns-warm:#fff4d7;--fl-patterns-success:#17653b;--fl-patterns-success-bg:#e6f7ed;--fl-patterns-retry:#8a4d12;--fl-patterns-retry-bg:#fff2dc;--fl-patterns-block-fill:#64b8c9;--fl-patterns-block-outline:#175778;color:var(--fl-patterns-ink);gap:1.25rem;min-width:0;display:grid}:root[data-theme=dark] .fl-patterns-stage,.dark .fl-patterns-stage{--fl-patterns-ink:#f4f7fb;--fl-patterns-muted:#c4cfdd;--fl-patterns-line:#52657e;--fl-patterns-panel:#172235;--fl-patterns-surface:#202d42;--fl-patterns-soft:#183b4b;--fl-patterns-accent:#78d4d3;--fl-patterns-accent-strong:#a7ece9;--fl-patterns-warm:#47371c;--fl-patterns-success:#9ae6b4;--fl-patterns-success-bg:#173c2a;--fl-patterns-retry:#ffd090;--fl-patterns-retry-bg:#4b321a;--fl-patterns-block-fill:#79d1dc;--fl-patterns-block-outline:#d8f7fb}.fl-patterns-stage button,.fl-patterns-stage [role=button],.fl-patterns-stage input{touch-action:manipulation}.fl-patterns-stage button:focus-visible,.fl-patterns-stage [role=button]:focus-visible,.fl-patterns-stage input:focus-visible{outline-offset:3px;outline:3px solid #f59e0b}.fl-patterns-instruction,.fl-patterns-choice-group>p,.fl-patterns-finish-panel p{color:var(--fl-patterns-muted);margin:0;line-height:1.6}.fl-patterns-instruction{background:var(--fl-patterns-soft);border-left:5px solid var(--fl-patterns-accent);color:var(--fl-patterns-ink);border-radius:.8rem;padding:.9rem 1rem;font-weight:800}.fl-patterns-round-status{color:var(--fl-patterns-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.7rem 1.2rem;font-size:.88rem;font-weight:800;display:flex}.fl-patterns-repeat-workspace,.fl-patterns-continuation-board,.fl-patterns-create-board,.fl-patterns-number-path,.fl-patterns-missing-board,.fl-patterns-detective-board,.fl-patterns-quick-panel,.fl-patterns-step-frame{background:var(--fl-patterns-panel);border:2px solid var(--fl-patterns-line);border-radius:1.25rem;min-width:0}.fl-patterns-repeat-workspace,.fl-patterns-continuation-board,.fl-patterns-create-board,.fl-patterns-number-path,.fl-patterns-missing-board,.fl-patterns-detective-board,.fl-patterns-quick-panel{gap:1rem;padding:clamp(.85rem,3vw,1.4rem);display:grid}.fl-patterns-strip{flex-wrap:wrap;justify-content:center;align-items:center;gap:clamp(.45rem,1.7vw,.8rem);min-width:0;display:flex}.fl-patterns-display-tile,.fl-patterns-slot{background:var(--fl-patterns-surface);border:2px solid var(--fl-patterns-line);border-radius:1rem;flex:0 0 clamp(3.25rem,9vw,4.5rem);justify-content:center;align-items:center;min-width:3.25rem;height:clamp(3.25rem,9vw,4.5rem);display:inline-flex;position:relative}.fl-patterns-endpoint-strip{--patterns-endpoint-size:clamp(3.4rem, 10vw, 4.6rem);grid-template-columns:repeat(var(--patterns-endpoint-count), var(--patterns-endpoint-size));grid-template-rows:var(--patterns-endpoint-size) .8rem;justify-content:start;gap:.65rem;width:max-content;max-width:100%;margin-inline:auto;padding:.25rem .25rem .45rem;display:grid;overflow-x:auto}.fl-patterns-endpoint-tile{height:var(--patterns-endpoint-size);width:var(--patterns-endpoint-size);grid-row:1;justify-content:center;align-items:center;display:inline-flex;position:relative;background:var(--fl-patterns-surface)!important;border:2px solid var(--fl-patterns-line)!important;min-height:var(--patterns-endpoint-size)!important;min-width:var(--patterns-endpoint-size)!important;border-radius:1rem!important;padding:.3rem!important}.fl-patterns-endpoint-tile.is-in-range{background:var(--fl-patterns-warm)!important;border-style:solid!important}.fl-patterns-endpoint-tile.is-endpoint{box-shadow:inset 0 0 0 2px var(--fl-patterns-accent);border-color:var(--fl-patterns-accent)!important}.fl-patterns-endpoint-tile.is-endpoint:after{background:var(--fl-patterns-accent);border:2px solid var(--fl-patterns-surface);color:#fff;content:"✓";z-index:2;border-radius:999px;justify-content:center;align-items:center;width:1.25rem;height:1.25rem;font-size:.68rem;font-weight:900;display:flex;position:absolute;bottom:-.38rem;right:-.38rem}.fl-patterns-range-bracket{border:solid var(--fl-patterns-accent);border-width:0 3px 3px;border-radius:0 0 .45rem .45rem;grid-row:2;align-self:start;height:.65rem;margin-inline:.35rem}.fl-patterns-icon{--pattern-icon-fill:#61b9ca;--pattern-icon-line:#135f78;width:2.35rem;height:2.35rem;display:inline-block;position:relative}.fl-patterns-icon:before{background:var(--pattern-icon-fill);border:3px solid var(--pattern-icon-line);content:"";position:absolute;inset:.15rem}.fl-patterns-icon.is-circle:before{border-radius:50%}.fl-patterns-icon.is-square:before{--pattern-icon-fill:#f1bd43;--pattern-icon-line:#805410;border-radius:.28rem}.fl-patterns-icon.is-triangle:before{--pattern-icon-fill:#ea7a75;--pattern-icon-line:#8a3434;clip-path:polygon(50% 3%,96% 92%,4% 92%);border:0}.fl-patterns-icon.is-triangle:after{content:"";border-bottom:3px solid #8a3434;position:absolute;bottom:.24rem;left:.34rem;right:.34rem}.fl-patterns-icon.is-star:before{--pattern-icon-fill:#a88bd8;--pattern-icon-line:#604093;clip-path:polygon(50% 0,62% 34%,98% 36%,69% 57%,79% 93%,50% 72%,21% 93%,31% 57%,2% 36%,38% 34%);border:0}.fl-patterns-actions,.fl-patterns-block-tools{flex-wrap:wrap;justify-content:center;align-items:center;gap:.7rem;display:flex}.fl-patterns-stage button,.fl-patterns-actions button,.fl-patterns-block-tools button{background:var(--fl-patterns-surface);border:2px solid var(--fl-patterns-line);color:var(--fl-patterns-ink);cursor:pointer;font:inherit;border-radius:.8rem;min-height:2.9rem;padding:.65rem .9rem;font-weight:850}.fl-patterns-stage button:hover:not(:disabled){border-color:var(--fl-patterns-accent)}.fl-patterns-stage button:disabled{cursor:not-allowed;opacity:.62}.fl-patterns-primary{background:var(--fl-patterns-accent)!important;border-color:var(--fl-patterns-accent)!important;color:#fff!important}.dark .fl-patterns-primary{color:#102028!important}.fl-patterns-repeat-proof{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:.55rem;display:grid}.fl-patterns-repeat-proof>span{background:var(--fl-patterns-success-bg);border:2px solid var(--fl-patterns-success);border-radius:.8rem;flex-wrap:wrap;justify-content:center;align-items:center;gap:.35rem;min-height:4rem;padding:.45rem;display:flex}.fl-patterns-bank,.fl-patterns-number-bank{flex-wrap:wrap;justify-content:center;align-items:stretch;gap:.65rem;display:flex}.fl-patterns-placement-item{-webkit-user-select:none;user-select:none;justify-content:center;align-items:center;gap:.45rem;min-width:3.25rem;display:inline-flex;touch-action:none!important}.fl-patterns-placement-item.is-selected,.fl-patterns-choice-group button.is-selected,.fl-patterns-choice-group button[aria-pressed=true],.fl-patterns-number-sequence button.is-selected{background:var(--fl-patterns-soft);border-color:var(--fl-patterns-accent);box-shadow:inset 0 0 0 2px var(--fl-patterns-accent)}.fl-patterns-placement-item.is-dragging{background-image:repeating-linear-gradient(135deg, transparent 0 7px, color-mix(in srgb, var(--fl-patterns-accent) 18%, transparent) 7px 14px)}.fl-patterns-slot{cursor:pointer;padding:0}.fl-patterns-slot.is-selected,.fl-patterns-slot.is-patterns-drag-over,.fl-patterns-grow-workspace.is-patterns-drag-over,.fl-patterns-number-drop.is-patterns-drag-over{background:var(--fl-patterns-warm);border-color:#c67b16;box-shadow:0 0 0 4px #f59e0b3d}.fl-patterns-slot .fl-patterns-placement-item{border:0;width:100%;min-width:0;height:100%;min-height:0;padding:.2rem}.fl-patterns-slot-number{color:var(--fl-patterns-muted);font-weight:900}.fl-patterns-drag-preview{height:var(--patterns-preview-height);left:var(--patterns-preview-left);pointer-events:none;top:var(--patterns-preview-top);width:var(--patterns-preview-width);z-index:10000;position:fixed}.fl-patterns-drag-preview-content{background:var(--fl-patterns-surface,#fff);border:3px solid var(--fl-patterns-accent,#176c73);color:var(--fl-patterns-ink,#172033);border-radius:.9rem;justify-content:center;align-items:center;gap:.4rem;width:100%;height:100%;display:flex;overflow:hidden;transform:scale(1.03);box-shadow:0 14px 30px #0f172a42}.fl-patterns-feedback{background:var(--fl-patterns-panel);border:2px solid var(--fl-patterns-line);color:var(--fl-patterns-ink);border-radius:1rem;margin:0;padding:.9rem 1rem;font-weight:750;line-height:1.55}.fl-patterns-feedback.is-correct{background:var(--fl-patterns-success-bg);border-color:var(--fl-patterns-success)}.fl-patterns-feedback.is-try-again{background:var(--fl-patterns-retry-bg);border-color:var(--fl-patterns-retry)}.fl-patterns-growing-steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:.8rem;display:grid}.fl-patterns-step-frame{text-align:center;align-content:start;gap:.65rem;min-height:11rem;padding:.8rem;display:grid}.fl-patterns-step-frame strong{color:var(--fl-patterns-muted);font-size:.82rem}.fl-patterns-block-group,.fl-patterns-grow-workspace{grid-template-columns:repeat(4,1.9rem);place-content:center;gap:.3rem;min-height:7rem;display:grid}.fl-patterns-grow-workspace{border:2px dashed var(--fl-patterns-line);border-radius:.75rem;padding:.45rem}.fl-patterns-stage .fl-patterns-unit-block{border-radius:.3rem;width:1.9rem;min-width:1.9rem;height:1.9rem;display:inline-block;background:var(--fl-patterns-block-fill)!important;border:2px solid var(--fl-patterns-block-outline)!important;min-height:1.9rem!important;padding:0!important}.fl-patterns-stage .fl-patterns-unit-block.is-removable{cursor:pointer}.fl-patterns-grow-workspace>[role=listitem]{width:1.9rem;height:1.9rem;display:inline-flex}.fl-patterns-live-count{color:var(--fl-patterns-ink);font-weight:850}.fl-patterns-control-hint{color:var(--fl-patterns-muted);text-align:center;margin:0;font-size:.88rem;font-weight:750}.fl-patterns-choice-group{border:0;gap:.75rem;min-width:0;margin:0;padding:0;display:grid}.fl-patterns-choice-group>p{color:var(--fl-patterns-ink);text-align:center;font-weight:850}.fl-patterns-choice-group>div{flex-wrap:wrap;justify-content:center;gap:.65rem;display:flex}.fl-patterns-create-braces{grid-template-columns:repeat(3,1fr);gap:.7rem;display:grid}.fl-patterns-create-braces span{border-bottom:4px solid var(--fl-patterns-accent);color:var(--fl-patterns-muted);text-align:center;padding-bottom:.3rem;font-size:.78rem;font-weight:850}.fl-patterns-number-sequence{flex-wrap:wrap;justify-content:center;align-items:center;gap:.55rem;display:flex}.fl-patterns-number-sequence>span,.fl-patterns-number-sequence>button,.fl-patterns-number-drop{background:var(--fl-patterns-surface);border:2px solid var(--fl-patterns-line);border-radius:.8rem;justify-content:center;align-items:center;min-width:3.5rem;height:3.5rem;font-size:1.1rem;font-weight:900;display:inline-flex;position:relative}.fl-patterns-number-sequence span i{color:var(--fl-patterns-accent);white-space:nowrap;z-index:2;font-size:.72rem;font-style:normal;position:absolute;top:-.55rem;left:calc(100% + .05rem)}.fl-patterns-number-sequence .is-blank,.fl-patterns-number-drop{border-style:dashed}.fl-patterns-number-drop{cursor:pointer}.fl-patterns-number-card{font-size:1.05rem;font-weight:900}.fl-patterns-quick-tabs{grid-template-columns:repeat(4,minmax(0,1fr));gap:.55rem;display:grid}.fl-patterns-quick-tabs button{gap:.15rem;line-height:1.2;display:grid}.fl-patterns-quick-tabs button span{color:var(--fl-patterns-success);font-size:.72rem}.fl-patterns-quick-tabs button.is-current{border-color:var(--fl-patterns-accent);box-shadow:inset 0 -4px 0 var(--fl-patterns-accent)}.fl-patterns-quick-tabs button.is-complete:before{content:"✓ "}.fl-patterns-quick-panel h4{color:var(--fl-patterns-ink);text-align:center;margin:0;font-size:1.25rem;font-weight:900}.fl-patterns-quick-panel>p{color:var(--fl-patterns-muted);text-align:center;margin:0}.fl-patterns-finish-panel{background:var(--fl-patterns-success-bg);border:2px solid var(--fl-patterns-success);text-align:center;border-radius:1rem;justify-items:center;gap:.8rem;padding:1rem;display:grid}@media (max-width:820px){.fl-patterns-growing-steps,.fl-patterns-quick-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:560px){.fl-patterns-growing-steps,.fl-patterns-repeat-proof{grid-template-columns:1fr}.fl-patterns-step-frame{min-height:9rem}.fl-patterns-display-tile,.fl-patterns-slot{flex-basis:3.15rem;min-width:3.15rem;height:3.15rem}.fl-patterns-icon{width:2rem;height:2rem}.fl-patterns-endpoint-strip{--patterns-endpoint-size:3.35rem}}@media (prefers-reduced-motion:reduce){.fl-patterns-stage *,.fl-patterns-drag-preview-content{scroll-behavior:auto!important;transition:none!important;animation:none!important}.fl-patterns-drag-preview-content{transform:none}}
.larger-semantic-drag-preview{--larger-preview-surface:#fff;--larger-preview-line:#176c73;--larger-preview-ink:#172033}:root[data-theme=dark] .larger-semantic-drag-preview,.dark .larger-semantic-drag-preview{--larger-preview-surface:#202d42;--larger-preview-line:#78d4d3;--larger-preview-ink:#f4f7fb}.larger-whole-number-stage{--larger-ink:#172033;--larger-muted:#526178;--larger-line:#aebed0;--larger-panel:#f7fbff;--larger-surface:#fff;--larger-soft:#e9f5ff;--larger-accent:#176c73;--larger-accent-strong:#0b555b;--larger-success:#17653b;--larger-success-bg:#e6f7ed;--larger-retry:#81480f;--larger-retry-bg:#fff2dc;color:var(--larger-ink);gap:1.15rem;min-width:0;display:grid}:root[data-theme=dark] .larger-whole-number-stage,.dark .larger-whole-number-stage{--larger-ink:#f4f7fb;--larger-muted:#c7d2df;--larger-line:#52657e;--larger-panel:#172235;--larger-surface:#202d42;--larger-soft:#183b4b;--larger-accent:#78d4d3;--larger-accent-strong:#a7ece9;--larger-success:#a7efbd;--larger-success-bg:#173c2a;--larger-retry:#ffd39a;--larger-retry-bg:#4b321a}.larger-whole-number-stage button{touch-action:manipulation;min-height:2.75rem}.larger-whole-number-stage button:focus-visible{outline-offset:3px;outline:3px solid #f59e0b}.larger-whole-number-instruction{background:var(--larger-soft);border-left:5px solid var(--larger-accent);color:var(--larger-ink);border-radius:.85rem;margin:0;padding:.9rem 1rem;font-weight:850;line-height:1.55}.larger-whole-number-concept{color:var(--larger-ink);margin:0;font-size:1rem;font-weight:800;line-height:1.55}.larger-round-status{color:var(--larger-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem 1rem;font-size:.9rem;font-weight:800;display:flex}.larger-spoken-target,.larger-exchange-reminder,.larger-digit-question{background:var(--larger-panel);border:2px solid var(--larger-line);text-align:center;border-radius:1.15rem;gap:.45rem;padding:clamp(.9rem,3vw,1.25rem);display:grid}.larger-spoken-target span,.larger-exchange-reminder span,.larger-digit-question>p{color:var(--larger-muted);margin:0;font-weight:750;line-height:1.5}.larger-spoken-target strong{color:var(--larger-ink);font-size:clamp(1.15rem,3vw,1.55rem);line-height:1.35}.larger-spoken-target b{color:var(--larger-accent-strong);font-size:clamp(1.4rem,5vw,2.1rem)}.larger-place-value-workspace{gap:1rem;width:100%;min-width:0;max-width:100%;display:grid}.larger-place-group{background:var(--larger-panel);border:2px solid var(--larger-line);border-radius:1.15rem;gap:.65rem;min-width:0;padding:.75rem;display:grid}.larger-place-group>h3{color:var(--larger-muted);letter-spacing:.06em;text-transform:uppercase;margin:0;font-size:.78rem;font-weight:900}.larger-place-group-grid{gap:.65rem;min-width:0;display:grid}.larger-place-group.has-1-places .larger-place-group-grid{grid-template-columns:minmax(0,min(100%,17rem));justify-content:center}.larger-place-group.has-2-places .larger-place-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.larger-place-group.has-3-places .larger-place-group-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.larger-place-column{background:var(--larger-surface);border:2px solid var(--larger-line);text-align:center;border-radius:1rem;grid-template-rows:auto minmax(7.3rem,auto) auto;gap:.65rem;min-width:0;padding:.75rem;display:grid}.larger-place-column.is-active-place{border-color:var(--larger-accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--larger-accent) 20%, transparent);animation:.7s ease-out larger-place-calm-emphasis}@keyframes larger-place-calm-emphasis{0%{box-shadow:0 0 0 7px color-mix(in srgb, var(--larger-accent) 28%, transparent)}to{box-shadow:0 0 0 4px color-mix(in srgb, var(--larger-accent) 20%, transparent)}}.larger-place-column header{gap:.2rem;min-height:3.6rem;display:grid}.larger-place-column header strong{color:var(--larger-ink);overflow-wrap:anywhere;font-size:.86rem;line-height:1.2}.larger-place-column header span,.larger-place-column>p{color:var(--larger-muted);margin:0;font-size:.73rem;font-weight:800;line-height:1.35}.larger-counter-field{grid-template-columns:repeat(3,minmax(2.75rem,3rem));place-content:start center;gap:.35rem;min-height:7.3rem;display:grid}.larger-place-counter{color:#123b43;font-variant-numeric:tabular-nums;letter-spacing:-.04em;white-space:nowrap;background:radial-gradient(circle at 35% 27%,#ffffffd1 0 7%,#0000 8%),linear-gradient(145deg,#d9f3f1,#7cc8c7);border:3px solid #245c66;border-radius:50%;justify-content:center;align-items:center;width:3.25rem;height:3.25rem;margin:0;padding:.15rem;font-size:.74rem;font-weight:950;line-height:1;display:inline-flex;box-shadow:0 4px #174b54,0 7px 12px #174b542b}.larger-place-counter-label{overflow-wrap:normal;text-align:center;white-space:nowrap;word-break:normal;max-width:100%;line-height:1;display:block}.larger-place-counter[data-counter-label-size=short]{font-size:.74rem}.larger-place-counter[data-counter-label-size=medium]{font-size:.66rem}.larger-place-counter[data-counter-label-size=long]{letter-spacing:-.05em;font-size:.58rem}.larger-place-counter[data-counter-label-size=extra-long]{letter-spacing:-.055em;font-size:.5rem}button.larger-place-counter{cursor:pointer;touch-action:manipulation;min-height:3.25rem;font-family:inherit}.larger-place-column.is-millions .larger-place-counter{border-style:double;border-width:5px}.larger-place-column.is-hundred-thousands .larger-place-counter{background-color:#f5ddad;background-image:repeating-linear-gradient(45deg,#0000 0 6px,#854d0e21 6px 8px)}.larger-place-column.is-ten-thousands .larger-place-counter{background-color:#d8d2f4;background-image:radial-gradient(circle,#52398f40 0 2px,#0000 2.5px);background-size:10px 10px}.larger-place-column.is-thousands .larger-place-counter{background-color:#c7e8c7;background-image:repeating-linear-gradient(90deg,#0000 0 7px,#14532d24 7px 9px)}.larger-place-column.is-hundreds .larger-place-counter{border-style:dashed}.larger-place-column.is-tens .larger-place-counter{border-style:double}.larger-place-column.is-ones .larger-place-counter{background:radial-gradient(circle,#dcefff 0 26%,#8ec5e7 28% 65%,#dcefff 67%)}.larger-empty-place{border:2px dashed var(--larger-line);color:var(--larger-muted);border-radius:.75rem;justify-content:center;align-items:center;width:100%;min-height:3.25rem;padding:.35rem;font-size:.75rem;font-weight:800;display:flex}.larger-counter-field>.larger-empty-place{grid-column:1/-1}.larger-place-stepper{grid-template-columns:2.75rem minmax(0,1fr) 2.75rem;align-items:center;gap:.4rem;display:grid}.larger-place-stepper>span{color:var(--larger-muted);font-size:.76rem;font-weight:850}.larger-place-stepper button,.larger-exchange-action,.larger-stage-actions button,.larger-restart-actions button,.larger-digit-options button,.larger-question-nav button{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-ink);cursor:pointer;font:inherit;border-radius:.85rem;padding:.55rem .7rem;font-size:.82rem;font-weight:850}.larger-place-stepper button{justify-content:center;align-items:center;min-height:2.75rem;padding:.25rem;font-size:1.25rem;display:inline-flex}.larger-place-stepper button:hover:not(:disabled),.larger-exchange-action:hover:not(:disabled),.larger-stage-actions button:hover:not(:disabled),.larger-digit-options button:hover,.larger-question-nav button:hover:not(:disabled){border-color:var(--larger-accent);background:var(--larger-soft)}.larger-current-total{color:var(--larger-ink);text-align:center;margin:0;font-size:1rem;font-weight:750}.larger-current-total strong{color:var(--larger-accent-strong);font-size:1.2em}.larger-build-evidence{background:var(--larger-success-bg);border:2px solid var(--larger-success);color:var(--larger-success);text-align:center;border-radius:.9rem;margin:0;padding:.8rem 1rem;font-weight:850;line-height:1.5}.larger-exchange-workspace{background:var(--larger-panel);border:2px solid var(--larger-line);border-radius:1.15rem;gap:.9rem;width:100%;min-width:0;max-width:100%;padding:clamp(.8rem,3vw,1.15rem);display:grid}.larger-exchange-reminder strong,.larger-exchange-reminder b{color:var(--larger-ink);line-height:1.4}.larger-exchange-reminder b{font-size:.95rem}.larger-exchange-equation{color:var(--larger-accent-strong);text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:.45rem .75rem;font-size:clamp(.9rem,2.5vw,1.05rem);display:flex}.larger-exchange-equation span{font-size:1.4em}.larger-exchange-active-places{grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem;min-width:0;display:grid}.larger-exchange-active-places .larger-place-column{grid-template-rows:auto minmax(7rem,auto) auto}.larger-exchange-active-places .larger-counter-field{grid-template-columns:repeat(5,minmax(2.75rem,3.25rem))}.larger-exchange-active-places .larger-place-counter{width:2.75rem;height:2.75rem}.larger-unchanged-places{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-muted);text-align:center;border-radius:.85rem;padding:.75rem .9rem;line-height:1.45}.larger-unchanged-places strong{color:var(--larger-ink)}.larger-exchange-action{justify-self:center;width:100%;max-width:32rem;min-height:3rem}.larger-exchange-action:disabled,.larger-place-stepper button:disabled{background:var(--larger-panel);color:var(--larger-muted);cursor:not-allowed}.larger-whole-number-feedback{border:2px solid var(--larger-line);color:var(--larger-ink);border-radius:.9rem;margin:0;padding:.8rem 1rem;font-weight:800;line-height:1.5}.larger-whole-number-feedback.is-ready{background:var(--larger-soft)}.larger-whole-number-feedback.is-correct{background:var(--larger-success-bg);border-color:var(--larger-success);color:var(--larger-success)}.larger-whole-number-feedback.is-try-again{background:var(--larger-retry-bg);border-color:var(--larger-retry);color:var(--larger-retry)}.larger-stage-actions,.larger-exchange-controls,.larger-restart-actions{flex-wrap:wrap;gap:.65rem;display:flex}.larger-stage-actions button,.larger-exchange-controls button,.larger-restart-actions button{flex:12rem;min-height:3rem}.larger-stage-actions button.is-primary{background:var(--larger-accent);border-color:var(--larger-accent);color:#fff}:root[data-theme=dark] .larger-stage-actions button.is-primary,.dark .larger-stage-actions button.is-primary{color:#082f33;background:#78d4d3;border-color:#78d4d3}.larger-stage-actions button:disabled,.larger-question-nav button:disabled{background:var(--larger-panel);color:var(--larger-muted);cursor:not-allowed}.larger-equivalence-proof{background:var(--larger-success-bg);border:2px solid var(--larger-success);color:var(--larger-success);text-align:center;border-radius:.9rem;margin:0;padding:.8rem 1rem;font-size:1.05rem;font-weight:900}.larger-equivalence-proof span{padding-inline:.4rem}.larger-restart-confirm{background:var(--larger-retry-bg);border:2px solid var(--larger-retry);color:var(--larger-retry);border-radius:.9rem;align-items:center;gap:.7rem;padding:.8rem 1rem;display:grid}.larger-restart-confirm p{margin:0;font-weight:850}.larger-restart-actions{width:100%}.larger-question-nav{grid-template-columns:repeat(5,minmax(0,1fr));gap:.55rem;display:grid}.larger-question-nav button{gap:.15rem;min-width:0;display:grid}.larger-question-nav button span{color:var(--larger-muted);font-size:.65rem}.larger-question-nav button.is-current{border-color:var(--larger-accent);box-shadow:inset 0 -4px 0 var(--larger-accent)}.larger-question-nav button.is-complete{background:var(--larger-success-bg);border-color:var(--larger-success)}.larger-digit-display{font-variant-numeric:tabular-nums;letter-spacing:.01em;flex-wrap:nowrap;justify-content:center;align-items:center;margin:.2rem 0;font-size:clamp(2rem,9vw,4.25rem);font-weight:950;line-height:1.2;display:flex}.larger-digit-display span{border:3px solid #0000;border-radius:.55rem;place-items:center;min-width:.72em;padding:.02em .04em;display:inline-grid}.larger-digit-display span.is-comma{min-width:.3em;padding-inline:0}.larger-digit-display span.is-target-digit{color:#623b00;text-underline-offset:.12em;background:#fff1c2;border-color:#9a5c00;text-decoration:underline;text-decoration-thickness:.1em}:root[data-theme=dark] .larger-digit-display span.is-target-digit,.dark .larger-digit-display span.is-target-digit{color:#fff1cf;background:#553812;border-color:#ffd279}.larger-digit-choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.larger-digit-choice-grid fieldset{background:var(--larger-panel);border:2px solid var(--larger-line);border-radius:1rem;min-width:0;padding:1rem}.larger-digit-choice-grid legend{color:var(--larger-ink);padding-inline:.35rem;font-weight:900}.larger-digit-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:.55rem;display:grid}.larger-digit-options button{overflow-wrap:anywhere;min-width:0}.larger-digit-options button.is-selected{background:var(--larger-soft);border-color:var(--larger-accent);box-shadow:inset 0 -4px 0 var(--larger-accent)}.larger-phase-status{background:var(--larger-panel);border:2px solid var(--larger-line);color:var(--larger-accent-strong);text-align:center;border-radius:.9rem;padding:.75rem 1rem}.larger-partition-target,.larger-rebuild-reminder{background:var(--larger-panel);border:2px solid var(--larger-line);text-align:center;border-radius:1rem;gap:.35rem;padding:.9rem 1rem;display:grid}.larger-partition-target span,.larger-rebuild-reminder span{color:var(--larger-muted);font-weight:800}.larger-partition-target strong{color:var(--larger-ink);font-variant-numeric:tabular-nums;letter-spacing:.02em;font-size:clamp(2rem,8vw,3.6rem)}.larger-rebuild-reminder strong{color:var(--larger-ink);font-size:1.05rem}.larger-semantic-bank{background:var(--larger-panel);border:2px solid var(--larger-line);border-radius:1rem;flex-wrap:wrap;justify-content:center;align-items:stretch;gap:.65rem;width:100%;min-width:0;max-width:100%;padding:.8rem;display:flex}.larger-semantic-bank-space{justify-content:center;align-items:center;min-width:0;display:flex}.larger-semantic-bank.is-digit-bank .larger-semantic-bank-space{flex:0 4.25rem;min-height:3.7rem}.larger-semantic-bank.is-value-bank .larger-semantic-bank-space{flex:7.5rem;max-width:10rem;min-height:3.7rem}.larger-bank-vacancy{border:2px dashed var(--larger-line);color:var(--larger-muted);border-radius:.75rem;justify-content:center;align-items:center;width:100%;min-height:3.35rem;padding:.35rem;font-size:.72rem;font-weight:850;display:flex}.larger-semantic-tile{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;font-family:inherit;position:relative}.larger-semantic-tile:active{cursor:grabbing}.larger-semantic-tile.is-selected{box-shadow:0 0 0 4px color-mix(in srgb, var(--larger-accent) 28%, transparent), 0 4px 0 color-mix(in srgb, var(--larger-accent) 55%, transparent);outline:3px double var(--larger-accent);outline-offset:2px;transform:translateY(-2px)}.larger-semantic-tile.is-dragging{visibility:hidden}.larger-digit-tile,.larger-value-card{background:var(--larger-surface);border:2px solid var(--larger-accent);color:var(--larger-ink);font-variant-numeric:tabular-nums;border-radius:.85rem;justify-content:center;align-items:center;min-height:3.35rem;padding:.55rem .7rem;font-weight:950;line-height:1;display:inline-flex}.larger-digit-tile{min-width:3.35rem;font-size:1.55rem}.larger-digit-tile.is-zero-tile{text-underline-offset:.16em;border-style:double;border-width:4px;text-decoration:underline;text-decoration-thickness:.1em}.larger-value-card{width:100%;font-size:.98rem}.larger-semantic-place-grid{grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr));gap:.7rem;width:100%;min-width:0;max-width:100%;display:grid}.larger-semantic-place-slot{background:var(--larger-surface);border:2px solid var(--larger-line);text-align:center;border-radius:1rem;grid-template-rows:auto minmax(4.6rem,auto) auto;gap:.55rem;min-width:0;padding:.7rem;display:grid}.larger-semantic-place-slot.is-larger-drag-over{border-color:var(--larger-accent);box-shadow:inset 0 0 0 4px color-mix(in srgb, var(--larger-accent) 22%, transparent)}.larger-semantic-place-slot header{gap:.15rem;min-height:3.1rem;display:grid}.larger-semantic-place-slot header strong{color:var(--larger-ink);overflow-wrap:anywhere;font-size:.84rem;line-height:1.2}.larger-semantic-place-slot header span{color:var(--larger-muted);font-size:.72rem;font-weight:800}.larger-semantic-slot-content{justify-content:center;align-items:center;min-width:0;display:flex}.larger-semantic-empty-slot{border:2px dashed var(--larger-line);color:var(--larger-muted);border-radius:.75rem;justify-content:center;align-items:center;width:100%;min-height:3.45rem;padding:.45rem;font-size:.76rem;font-weight:850;display:flex}.larger-semantic-place-action,.larger-primary-action{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-ink);cursor:pointer;font:inherit;border-radius:.8rem;min-height:2.75rem;padding:.45rem .55rem;font-size:.76rem;font-weight:850}.larger-semantic-place-action:disabled{background:var(--larger-panel);color:var(--larger-muted);cursor:not-allowed}.larger-placed-digit-connection{flex-wrap:wrap;justify-content:center;align-items:center;gap:.3rem;min-width:0;display:flex}.larger-placed-digit-connection>span,.larger-placed-digit-connection>strong{color:var(--larger-ink);font-size:.75rem;font-weight:900}.larger-expanded-evidence{background:var(--larger-success-bg);border:2px solid var(--larger-success);color:var(--larger-success);border-radius:1rem;gap:.75rem;padding:.9rem;display:grid}.larger-expanded-evidence>p{text-align:center;margin:0;font-weight:850}.larger-expanded-equation{font-variant-numeric:tabular-nums;text-align:center;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:.35rem .55rem;font-weight:900;line-height:1.5;display:flex}.larger-expanded-equation>span{white-space:nowrap;align-items:baseline;gap:.55rem;display:inline-flex}.larger-expanded-equation b{color:var(--larger-success)}.larger-primary-action{background:var(--larger-accent);border-color:var(--larger-accent);color:#fff;justify-self:center;width:100%;max-width:24rem}:root[data-theme=dark] .larger-primary-action,.dark .larger-primary-action{color:#082f33;background:#78d4d3;border-color:#78d4d3}.larger-semantic-drag-preview{background:var(--larger-preview-surface);border:3px solid var(--larger-preview-line);color:var(--larger-preview-ink);font-variant-numeric:tabular-nums;height:var(--larger-preview-height);left:var(--larger-preview-left);pointer-events:none;max-width:calc(100vw - 2px);min-height:2.75rem;top:var(--larger-preview-top);width:var(--larger-preview-width);z-index:120;border-radius:.85rem;justify-content:center;align-items:center;padding:.45rem .6rem;font-family:inherit;font-weight:950;display:flex;position:fixed;overflow:hidden;box-shadow:0 10px 24px #0f172a47}.larger-comparison-numerals,.larger-detective-claim,.larger-readiness-question{background:var(--larger-panel);border:2px solid var(--larger-line);color:var(--larger-ink);border-radius:1rem;min-width:0;padding:clamp(.9rem,3vw,1.2rem)}.larger-comparison-numerals{font-variant-numeric:tabular-nums;text-align:center;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:.6rem;display:grid}.larger-comparison-number{align-items:center;gap:.2rem;min-width:0;display:grid}.larger-comparison-number small{color:var(--larger-muted);font-size:.72rem;font-weight:850}.larger-comparison-number strong{color:var(--larger-ink);white-space:nowrap;font-size:clamp(1.55rem,6vw,2.7rem)}.larger-comparison-symbol-slot{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-ink);border-radius:.75rem;align-items:center;min-width:3.4rem;min-height:3.4rem;padding:.35rem;font-size:clamp(1.65rem,5vw,2.15rem);font-weight:950;line-height:1;display:grid}.larger-comparison-symbol-slot.is-empty{color:var(--larger-muted);border-style:dashed}.larger-comparison-symbol-slot.has-selection{border-color:var(--larger-accent);box-shadow:inset 0 -3px 0 var(--larger-accent)}.larger-comparison-place-choice,.larger-relation-choice,.larger-detective-verdict,.larger-detective-evidence{border:0;gap:.75rem;min-width:0;margin:0;padding:0;display:grid}.larger-comparison-place-choice legend,.larger-relation-choice legend,.larger-detective-verdict legend,.larger-detective-evidence legend{color:var(--larger-ink);padding:0;font-weight:900}.larger-comparison-place-grid{grid-template-columns:repeat(auto-fit,minmax(6.5rem,1fr));gap:.6rem;min-width:0;display:grid}.larger-comparison-place-grid>button,.larger-all-same-option,.larger-relation-choice button,.larger-detective-verdict button,.larger-detective-evidence button,.larger-readiness-options button{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-ink);cursor:pointer;font:inherit;border-radius:.9rem;min-width:0;padding:.7rem;font-weight:850}.larger-comparison-place-grid>button{gap:.55rem;min-height:8.75rem;display:grid}.larger-comparison-place-name{color:var(--larger-muted);overflow-wrap:anywhere;text-transform:capitalize;font-size:.74rem;font-weight:900;line-height:1.2}.larger-comparison-digit-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:.35rem;display:grid}.larger-comparison-digit-pair>span{background:var(--larger-panel);border:1px solid var(--larger-line);border-radius:.65rem;align-items:center;gap:.1rem;min-height:3.7rem;padding:.3rem;display:grid}.larger-comparison-digit-pair small{color:var(--larger-muted);font-size:.62rem;font-weight:850}.larger-comparison-digit-pair b{color:var(--larger-ink);font-variant-numeric:tabular-nums;font-size:1.35rem}.larger-comparison-place-grid em{color:var(--larger-success);font-size:.68rem;font-style:normal;font-weight:900}.larger-all-same-option{justify-self:center;width:100%;max-width:24rem}.larger-comparison-place-grid>button.is-selected,.larger-all-same-option.is-selected,.larger-relation-choice button.is-selected,.larger-detective-verdict button.is-selected,.larger-detective-evidence button.is-selected,.larger-readiness-options button.is-selected{background:var(--larger-soft);border-color:var(--larger-accent);box-shadow:inset 0 -4px 0 var(--larger-accent)}.larger-comparison-place-grid>button.is-deciding,.larger-all-same-option.is-deciding,.larger-comparison-place-grid.is-all-same>button{border-color:var(--larger-success);box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--larger-success) 22%, transparent)}.larger-relation-choice>div,.larger-detective-verdict>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:.65rem;display:grid}.larger-detective-verdict>div{grid-template-columns:repeat(2,minmax(0,1fr))}.larger-relation-choice button{align-items:center;gap:.2rem;display:grid}.larger-relation-choice button strong{font-size:1.65rem;line-height:1}.larger-relation-choice button span{color:var(--larger-muted);font-size:.75rem;line-height:1.35}.larger-comparison-result{font-variant-numeric:tabular-nums;margin-bottom:.35rem;font-size:1.08rem;display:block}.larger-detective-claim{gap:.55rem;display:grid}.larger-detective-claim p,.larger-detective-claim h3,.larger-detective-claim blockquote{margin:0}.larger-detective-claim p{color:var(--larger-muted);font-weight:800}.larger-detective-claim p strong{color:var(--larger-ink);font-variant-numeric:tabular-nums}.larger-detective-claim h3{color:var(--larger-accent-strong);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem}.larger-detective-claim blockquote{color:var(--larger-ink);font-size:clamp(1.05rem,3vw,1.25rem);font-weight:850;line-height:1.5}.larger-detective-evidence>div,.larger-readiness-options{grid-template-columns:1fr;gap:.65rem;display:grid}.larger-detective-evidence button,.larger-readiness-options button{text-align:left;min-height:3.25rem;line-height:1.45}.larger-readiness-progress{grid-template-columns:repeat(6,minmax(0,1fr));gap:.5rem;display:grid}.larger-readiness-progress>span{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-muted);text-align:center;border-radius:.75rem;align-items:center;gap:.1rem;min-width:0;padding:.45rem .25rem;font-size:.65rem;font-weight:850;display:grid}.larger-readiness-progress b{color:var(--larger-ink);font-size:.9rem}.larger-readiness-progress>span.is-current{border-color:var(--larger-accent);box-shadow:inset 0 -3px 0 var(--larger-accent)}.larger-readiness-progress>span.is-complete{background:var(--larger-success-bg);border-color:var(--larger-success);color:var(--larger-success)}.larger-readiness-question{gap:.9rem;display:grid}.larger-readiness-question h3{color:var(--larger-ink);margin:0;font-size:clamp(1rem,3vw,1.2rem);line-height:1.5}.larger-readiness-expression{background:var(--larger-surface);border:2px solid var(--larger-line);color:var(--larger-accent-strong);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;text-align:center;border-radius:.8rem;margin:0;padding:.75rem;font-size:clamp(1rem,3.5vw,1.35rem);font-weight:900;line-height:1.5}@media (max-width:760px){.larger-place-group.has-3-places .larger-place-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.larger-digit-choice-grid,.larger-digit-options{grid-template-columns:1fr}.larger-question-nav{grid-template-columns:repeat(5,minmax(3.25rem,1fr));padding:.2rem .2rem .5rem;overflow-x:auto}.larger-semantic-place-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.larger-readiness-progress{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:520px){.larger-place-group.has-2-places .larger-place-group-grid,.larger-place-group.has-3-places .larger-place-group-grid,.larger-exchange-active-places{grid-template-columns:1fr}.larger-exchange-active-places .larger-counter-field{grid-template-columns:repeat(4,minmax(2.75rem,3rem))}.larger-stage-actions,.larger-exchange-controls,.larger-restart-actions{grid-template-columns:1fr;display:grid}.larger-question-nav button span{font-size:.58rem}.larger-digit-display{font-size:clamp(1.8rem,10vw,3rem)}.larger-semantic-place-grid{grid-template-columns:1fr}.larger-semantic-bank.is-value-bank .larger-semantic-bank-space{flex-basis:calc(50% - .4rem);max-width:none}.larger-expanded-equation{text-align:left;justify-content:flex-start}.larger-comparison-place-grid,.larger-relation-choice>div,.larger-detective-verdict>div{grid-template-columns:1fr}.larger-comparison-place-grid>button{grid-template-columns:minmax(7.5rem,1fr) minmax(0,1.5fr);min-height:0}.larger-comparison-number strong{font-size:clamp(1.05rem,6vw,1.55rem)}.larger-comparison-symbol-slot{min-width:2.9rem;min-height:2.9rem}.larger-comparison-place-grid em{grid-column:1/-1}}@media (prefers-reduced-motion:reduce){.larger-place-column.is-active-place{border-color:var(--larger-accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--larger-accent) 20%, transparent);animation:none}.larger-whole-number-stage *,.larger-whole-number-stage :before,.larger-whole-number-stage :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.decimal-place-value-stage{--decimal-ink:#172033;--decimal-muted:#526178;--decimal-line:#aebed0;--decimal-panel:#f5f9fd;--decimal-surface:#fff;--decimal-soft:#e7f5f5;--decimal-accent:#176c73;--decimal-accent-strong:#0b555b;--decimal-cell-empty:#e5edf5;--decimal-cell-fill:#57adb2;--decimal-whole:#eaf4ff;--decimal-fraction:#f0edf9;--decimal-success:#17653b;--decimal-success-bg:#e6f7ed;--decimal-retry:#81480f;--decimal-retry-bg:#fff2dc;--decimal-exchange:#b45309;--decimal-focus:#f59e0b;--decimal-dialog-overlay:#0f172ab8;color:var(--decimal-ink);gap:.8rem;width:100%;min-width:0;max-width:100%;display:grid}.decimal-b2-drag-preview{--decimal-ink:#172033;--decimal-surface:#fff;--decimal-accent:#176c73}:root[data-theme=dark] .decimal-b2-drag-preview,.dark .decimal-b2-drag-preview{--decimal-ink:#f4f7fb;--decimal-surface:#202d42;--decimal-accent:#78d4d3}:root[data-theme=dark] .decimal-place-value-stage,.dark .decimal-place-value-stage{--decimal-ink:#f4f7fb;--decimal-muted:#c7d2df;--decimal-line:#52657e;--decimal-panel:#172235;--decimal-surface:#202d42;--decimal-soft:#183b4b;--decimal-accent:#78d4d3;--decimal-accent-strong:#a7ece9;--decimal-cell-empty:#2a3a51;--decimal-cell-fill:#4da9ae;--decimal-whole:#18344c;--decimal-fraction:#342c4b;--decimal-success:#a7efbd;--decimal-success-bg:#173c2a;--decimal-retry:#ffd39a;--decimal-retry-bg:#4b321a;--decimal-exchange:#fbbf24;--decimal-focus:#fbbf24;--decimal-dialog-overlay:#020617d1}.decimal-place-value-stage button,.decimal-place-value-stage summary,.decimal-place-value-stage label{touch-action:manipulation}.decimal-place-value-stage button{min-height:2.75rem}.decimal-place-value-stage button:focus-visible,.decimal-place-value-stage summary:focus-visible,.decimal-place-value-stage input:focus-visible+span{outline:3px solid var(--decimal-focus);outline-offset:3px}.decimal-stage-instruction{background:var(--decimal-soft);border-left:5px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.75rem;margin:0;padding:.7rem .85rem;font-weight:850;line-height:1.45}.decimal-stage-concept{color:var(--decimal-ink);margin:0;font-weight:800;line-height:1.45}.decimal-round-status{color:var(--decimal-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.35rem 1rem;font-size:.9rem;font-weight:800;display:flex}.decimal-target-card{background:var(--decimal-panel);border:2px solid var(--decimal-line);text-align:center;border-radius:.9rem;justify-items:center;gap:.25rem;padding:.7rem 1rem;display:grid}.decimal-target-card p,.decimal-target-card span{color:var(--decimal-muted);margin:0;font-weight:750;line-height:1.35}.decimal-target-card strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;font-size:clamp(1.8rem,6vw,2.55rem);line-height:1}.decimal-compact-builder{grid-template-columns:minmax(12.5rem,.9fr) clamp(4.75rem,9%,5.5rem) minmax(0,2fr);align-items:stretch;gap:.55rem;min-width:0;max-width:100%;display:grid}.decimal-builder-group{grid-template-columns:repeat(auto-fit,minmax(min(100%,12rem),1fr));gap:.55rem;min-width:0;display:grid}.decimal-builder-group.is-fraction{background:var(--decimal-fraction);border:1px solid var(--decimal-line);border-radius:.9rem;padding:.45rem}.decimal-inline-separator{color:var(--decimal-accent-strong);text-align:center;flex:none;align-self:center;justify-items:center;min-width:1.25rem;line-height:1;display:grid}.decimal-inline-separator>span{font-family:Georgia,Times New Roman,serif;font-size:2.25rem;font-weight:900;line-height:.5}.decimal-inline-separator small{color:var(--decimal-muted);white-space:nowrap;margin-top:.3rem;font-size:.62rem;font-weight:800;line-height:1.1}.decimal-inline-separator.is-builder-separator{background:var(--decimal-panel);border:1px solid var(--decimal-line);border-radius:.7rem;justify-content:center;align-self:stretch;width:100%;min-width:0;padding:.5rem .25rem}.decimal-inline-separator.is-builder-separator>span{line-height:.75}.decimal-inline-separator.is-builder-separator small{margin-top:.2rem}.decimal-place-control{background:var(--decimal-surface);border:2px solid var(--decimal-line);border-radius:.8rem;gap:.45rem;min-width:0;padding:.6rem;display:grid}.decimal-place-control header{justify-content:space-between;align-items:baseline;gap:.5rem;display:flex}.decimal-place-control header span,.decimal-place-control header strong{word-break:normal;line-height:1.2}.decimal-place-control header span{overflow-wrap:normal;font-size:.86rem;font-weight:850}.decimal-place-control header strong{color:var(--decimal-accent-strong);font-size:1.15rem}.decimal-contained-place-model{place-items:center;gap:.25rem;min-width:0;display:grid}.decimal-contained-place-model small{color:var(--decimal-muted);text-align:center;font-size:.66rem;font-weight:750;line-height:1.2}.decimal-ten-cell-model{grid-template-columns:repeat(5,minmax(0,1fr));gap:.22rem;width:100%;min-width:0;max-width:10.5rem;padding:.2rem;display:grid}.decimal-ten-cell-model span{aspect-ratio:1.35;background:var(--decimal-cell-empty);border:1px solid var(--decimal-line);border-radius:.18rem;min-width:0}.decimal-ten-cell-model span.is-filled{background:var(--decimal-cell-fill);border-color:var(--decimal-accent-strong)}.decimal-ten-cell-model span.is-exchange-unit{border:3px solid var(--decimal-exchange);box-shadow:inset 0 0 0 2px var(--decimal-surface)}.decimal-horizontal-controls{grid-template-columns:2.75rem minmax(0,1fr) 2.75rem;align-items:center;gap:.35rem;width:100%;min-width:0;max-width:100%;display:grid}.decimal-horizontal-controls button{background:var(--decimal-soft);border:2px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.6rem;font-size:1.25rem;font-weight:900}.decimal-horizontal-controls button:disabled{background:var(--decimal-panel);color:var(--decimal-muted);cursor:not-allowed;border-style:dashed}.decimal-horizontal-controls span{color:var(--decimal-ink);overflow-wrap:normal;text-align:center;white-space:normal;word-break:normal;font-size:.76rem;font-weight:850;line-height:1.2}.decimal-semantic-summary{background:var(--decimal-panel);border:1px solid var(--decimal-line);color:var(--decimal-ink);text-align:center;border-radius:.7rem;margin:0;padding:.6rem .75rem;font-weight:800;line-height:1.4}.decimal-place-connection{background:var(--decimal-panel);border:1px solid var(--decimal-line);color:var(--decimal-ink);border-radius:.75rem;padding:.55rem .7rem}.decimal-place-connection summary{cursor:pointer;font-weight:850}.decimal-place-connection>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:.4rem;padding-top:.6rem;display:grid}.decimal-place-connection p{background:var(--decimal-surface);border:1px solid var(--decimal-line);text-align:center;border-radius:.6rem;align-items:center;gap:.35rem;margin:0;padding:.45rem;display:grid}.decimal-place-connection strong{font-size:.78rem;line-height:1.3}.decimal-connection-model{grid-template-columns:repeat(10,minmax(0,1fr));gap:2px;display:grid}.decimal-connection-model i{aspect-ratio:.65;background:var(--decimal-cell-fill);border:1px solid var(--decimal-accent-strong);border-radius:.1rem}.decimal-feedback{border:2px solid;border-radius:.75rem;margin:0;padding:.65rem .8rem;font-weight:800;line-height:1.4}.decimal-feedback.is-correct{background:var(--decimal-success-bg);color:var(--decimal-success)}.decimal-feedback.is-incorrect{background:var(--decimal-retry-bg);color:var(--decimal-retry)}.decimal-stage-actions{flex-wrap:wrap;gap:.55rem;display:flex}.decimal-stage-actions>*{max-width:100%}.concept-step-panel:has(.decimal-stage-two-recovery) .concept-step-heading>div>p:not(.primary-kicker){display:none}.decimal-stage-two-recovery,.decimal-stage-two-recovery .decimal-place-value-stage{gap:.8rem;min-width:0;display:grid}.decimal-stage-two-subtitle{color:var(--decimal-ink);margin:0;font-size:1rem;font-weight:850;line-height:1.4}.decimal-exchange-progress{color:var(--decimal-muted);margin:0;font-size:.85rem;font-weight:800}.decimal-unchanged-panel{background:var(--decimal-soft);border:1px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.7rem;padding:.55rem .75rem}.decimal-live-exchange,.decimal-grouped-result{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.85rem;gap:.65rem;min-width:0;padding:.75rem;display:grid}.decimal-live-equation,.decimal-result-equation{color:var(--decimal-ink);font-variant-numeric:tabular-nums;text-align:center;font-size:1rem}.decimal-dynamic-instruction{color:var(--decimal-accent-strong);text-align:center;margin:0;font-weight:850}.decimal-place-models,.decimal-result-place-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;min-width:0;display:grid}.decimal-live-place-card,.decimal-result-source,.decimal-result-destination{background:var(--decimal-surface);border:1px solid var(--decimal-line);border-radius:.65rem;gap:.45rem;min-width:0;padding:.55rem;display:grid}.decimal-live-place-card header{justify-content:space-between;align-items:baseline;gap:.4rem;display:flex}.decimal-live-place-card header span,.decimal-live-place-card header strong,.decimal-live-place-card small,.decimal-result-source small,.decimal-result-destination small{overflow-wrap:normal;word-break:normal;line-height:1.25}.decimal-live-place-card header span,.decimal-result-source>strong,.decimal-result-destination>strong{color:var(--decimal-muted);text-transform:uppercase;font-size:.76rem;font-weight:850}.decimal-live-place-card header strong{font-size:.82rem}.decimal-live-place-card small{color:var(--decimal-muted);font-size:.72rem;font-weight:800}.decimal-selectable-source-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:.24rem;min-width:0;display:grid}.decimal-selectable-source-grid>button,.decimal-selectable-source-grid>span{aspect-ratio:1.35;border:2px solid var(--decimal-line);border-radius:.22rem;min-width:0;min-height:2.75rem}.decimal-selectable-source-grid>button{background:var(--decimal-cell-fill);color:var(--decimal-ink);cursor:pointer;place-items:center;padding:0;font-weight:900;display:grid}.decimal-selectable-source-grid>span{background:var(--decimal-cell-empty)}.decimal-selectable-source-grid>button.is-selected{border-color:var(--decimal-exchange);box-shadow:inset 0 0 0 2px var(--decimal-surface)}.decimal-selectable-whole-source{min-width:0;display:grid}.decimal-selectable-whole-source>button{background:var(--decimal-whole);border:2px solid var(--decimal-accent);color:var(--decimal-ink);cursor:pointer;border-radius:.6rem;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:.35rem;width:100%;min-height:5.25rem;padding:.55rem .7rem;display:grid}.decimal-selectable-whole-source>button.is-selected{border-color:var(--decimal-exchange);box-shadow:inset 0 0 0 2px var(--decimal-surface)}.decimal-whole-source-block{background:var(--decimal-cell-fill);border:2px solid var(--decimal-accent-strong);border-radius:.4rem;justify-content:center;align-items:center;gap:.35rem;min-height:3.25rem;display:flex}.decimal-whole-source-block b{font-size:1.3rem}.decimal-whole-source-block small{color:var(--decimal-ink);font-size:.8rem;font-weight:850}.decimal-whole-selected-cue{color:var(--decimal-retry);font-size:.72rem;font-weight:900}.decimal-selection-status{color:var(--decimal-retry)!important}.decimal-empty-source-state{background:var(--decimal-panel);border:2px dashed var(--decimal-line);color:var(--decimal-muted);border-radius:.55rem;align-content:center;place-items:center;gap:.1rem;min-height:4.25rem;display:grid}.decimal-empty-source-state b{font-size:1.35rem}.decimal-new-unit-group{background:var(--decimal-surface);border-color:var(--decimal-exchange);text-align:center;border-style:solid;border-width:2px;border-radius:.55rem;gap:.2rem;min-width:0;padding:.4rem;display:grid}.decimal-new-unit-group .decimal-ten-cell-model{max-width:8rem;padding:0}.decimal-new-unit-group small{color:var(--decimal-ink);font-size:.7rem;font-weight:850;line-height:1.2}.decimal-result-groups{grid-template-columns:minmax(7rem,1.1fr) auto minmax(6rem,.9fr);align-items:center;gap:.35rem;min-width:0;display:grid}.decimal-result-groups>div{text-align:center;gap:.2rem;min-width:0;display:grid}.decimal-result-groups small,.decimal-result-source small{color:var(--decimal-muted);font-size:.72rem;font-weight:800}.decimal-result-plus{color:var(--decimal-accent-strong);font-size:1.2rem}.decimal-equivalence-line{color:var(--decimal-ink);text-align:center;margin:0;font-weight:850}.decimal-trade-action{justify-self:center;width:100%;max-width:21rem}.decimal-equivalence-connection{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.85rem;gap:.7rem;padding:.75rem;display:grid}.decimal-same-amount-panel{grid-template-columns:minmax(13rem,1fr) minmax(12rem,.9fr);align-items:center;gap:.9rem;display:grid}.decimal-same-amount-panel strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;text-align:center;margin:0;font-size:1rem}.decimal-same-amount-model{aspect-ratio:5/2;background:linear-gradient(to right, var(--decimal-cell-fill) 0 80%, var(--decimal-cell-empty) 80% 100%);border:3px solid var(--decimal-accent-strong);border-radius:.55rem;display:grid;position:relative}.decimal-same-amount-fill{border-right:3px solid var(--decimal-ink);grid-area:1/1;width:80%}.decimal-subdivision-overlay{background-image:linear-gradient(to right, transparent calc(100% - 1px), var(--decimal-line) 0), linear-gradient(to bottom, transparent calc(100% - 1px), var(--decimal-line) 0);grid-area:1/1}.decimal-same-amount-model.is-tenths .decimal-subdivision-overlay{background-size:10% 100%}.decimal-same-amount-model.is-hundredths .decimal-subdivision-overlay{background-size:10% 10%}.decimal-same-amount-model.is-thousandths .decimal-subdivision-overlay{background-size:1% 10%}.decimal-subdivision-action{justify-self:center;width:100%;max-width:24rem}.decimal-equivalence-equation{background:var(--decimal-success-bg);border:2px solid var(--decimal-success);color:var(--decimal-success);text-align:center;border-radius:.65rem;padding:.55rem}.decimal-digit-question-card{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.85rem;justify-items:center;gap:.25rem;padding:.65rem 1rem;display:grid}.decimal-digit-question-card p{color:var(--decimal-muted);margin:0;font-weight:750}.decimal-highlighted-number{color:var(--decimal-ink);font-variant-numeric:tabular-nums;letter-spacing:.025em;font-size:clamp(2rem,7vw,3rem);line-height:1.05}.decimal-highlighted-number span{place-items:center;min-width:.62em;display:inline-grid}.decimal-highlighted-number .is-highlighted-digit{background:var(--decimal-soft);border:3px solid var(--decimal-accent);box-shadow:0 3px 0 var(--decimal-accent-strong);border-radius:.3rem}.decimal-number-point{color:var(--decimal-accent-strong)}.decimal-place-heading-reference,.decimal-exact-evidence-row{background:var(--decimal-panel);border:1px solid var(--decimal-line);border-radius:.75rem;grid-template-columns:minmax(6.5rem,.9fr) 1.4rem repeat(3,minmax(6.5rem,1fr));align-items:stretch;gap:.4rem;min-width:0;padding:.55rem;display:grid}.decimal-place-heading-reference>span:not(.decimal-inline-separator){background:var(--decimal-surface);border:1px solid var(--decimal-line);color:var(--decimal-ink);text-align:center;word-break:normal;border-radius:.5rem;place-items:center;min-height:2.75rem;padding:.35rem;font-size:.78rem;font-weight:850;display:grid}.decimal-exact-evidence-row>span{background:var(--decimal-surface);border:2px solid var(--decimal-line);text-align:center;border-radius:.55rem;gap:.15rem;min-width:0;padding:.4rem;display:grid;position:relative}.decimal-exact-evidence-row small{color:var(--decimal-muted);word-break:normal;font-size:.68rem;font-weight:800;line-height:1.2}.decimal-exact-evidence-row strong{color:var(--decimal-ink);font-size:1.15rem}.decimal-exact-evidence-row em{color:var(--decimal-success);font-size:.65rem;font-style:normal;font-weight:850}.decimal-exact-evidence-row .is-confirmed-place{border-color:var(--decimal-success);box-shadow:inset 0 0 0 1px var(--decimal-success)}.decimal-dual-choice-layout{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;min-width:0;display:grid}.decimal-choice-group{border:0;gap:.45rem;min-width:0;margin:0;padding:0;display:grid}.decimal-choice-group legend{color:var(--decimal-ink);margin-bottom:.4rem;font-size:.88rem;font-weight:850}.decimal-choice-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:.4rem;min-width:0;display:grid}.decimal-choice-grid label{background:var(--decimal-surface);border:2px solid var(--decimal-line);cursor:pointer;border-radius:.65rem;place-items:center;min-width:0;min-height:2.9rem;display:grid;position:relative}.decimal-choice-grid label.is-selected{background:var(--decimal-soft);border-color:var(--decimal-accent-strong);box-shadow:inset 0 0 0 2px var(--decimal-accent)}.decimal-choice-grid label span{color:var(--decimal-ink);text-align:center;word-break:normal;padding:.45rem .25rem;font-size:.88rem;font-weight:850}.decimal-choice-grid input{width:1px;height:1px;position:absolute;top:50%;left:50%}.decimal-choice-group:disabled label{cursor:default}.decimal-checked-evidence{background:var(--decimal-success-bg);border:2px solid var(--decimal-success);color:var(--decimal-success);border-radius:.75rem;gap:.25rem;padding:.65rem .8rem;display:grid}.decimal-checked-evidence strong,.decimal-checked-evidence p,.decimal-checked-evidence small{margin:0;line-height:1.35}.decimal-checked-evidence p,.decimal-checked-evidence small{color:var(--decimal-ink)}.decimal-dialog-backdrop{background:var(--decimal-dialog-overlay);z-index:100;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.decimal-confirmation-dialog{background:var(--decimal-surface);border:3px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.9rem;gap:.75rem;width:100%;max-width:30rem;padding:1rem;display:grid;box-shadow:0 18px 55px #0f172a59}.decimal-confirmation-dialog h3,.decimal-confirmation-dialog p{margin:0}.decimal-confirmation-dialog p{color:var(--decimal-muted);line-height:1.45}.decimal-confirmation-dialog>div{flex-wrap:wrap;gap:.55rem;display:flex}@media (max-width:900px){.decimal-dual-choice-layout,.decimal-same-amount-panel,.decimal-builder-group.is-fraction{grid-template-columns:1fr}}@media (max-width:760px){.decimal-compact-builder{grid-template-columns:1fr}.decimal-compact-builder>.decimal-inline-separator{justify-self:center;width:min(100%,10rem);min-height:3.5rem;padding:.4rem .75rem}.decimal-builder-group.is-fraction{grid-template-columns:repeat(2,minmax(0,1fr))}.decimal-place-models,.decimal-result-place-row,.decimal-place-connection>div{grid-template-columns:1fr}.decimal-place-heading-reference,.decimal-exact-evidence-row{grid-template-columns:repeat(2,minmax(0,1fr))}.decimal-place-heading-reference>span:first-child,.decimal-place-heading-reference>.decimal-inline-separator,.decimal-place-heading-reference>span:last-child{grid-column:1/-1}.decimal-exact-evidence-row>span,.decimal-exact-evidence-row>.decimal-inline-separator{grid-column:auto}.decimal-exact-evidence-row>span:first-child,.decimal-exact-evidence-row>.decimal-inline-separator{grid-column:1/-1}}@media (max-width:480px){.decimal-builder-group.is-fraction,.decimal-choice-grid,.decimal-place-heading-reference,.decimal-exact-evidence-row{grid-template-columns:1fr}.decimal-place-heading-reference>span,.decimal-place-heading-reference>.decimal-inline-separator{grid-column:1}.decimal-horizontal-controls{grid-template-columns:2.75rem minmax(0,1fr) 2.75rem}.decimal-result-groups{grid-template-columns:1fr}.decimal-result-plus{line-height:1}.decimal-stage-actions,.decimal-confirmation-dialog>div{grid-template-columns:1fr;display:grid}.decimal-stage-actions>button,.decimal-confirmation-dialog button{width:100%}}@media (prefers-reduced-motion:reduce){.decimal-place-value-stage *,.decimal-place-value-stage :before,.decimal-place-value-stage :after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}.decimal-b2-subtitle{color:var(--decimal-muted);margin:0;font-weight:800;line-height:1.4}.decimal-b2-target,.decimal-b2-rebuild-reminder{background:var(--decimal-panel);border:2px solid var(--decimal-line);text-align:center;border-radius:.8rem;flex-wrap:wrap;justify-content:center;align-items:center;gap:.45rem 1rem;min-width:0;padding:.65rem .8rem;display:flex}.decimal-b2-target span,.decimal-b2-rebuild-reminder span{color:var(--decimal-muted);font-weight:800;line-height:1.35}.decimal-b2-target strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;font-size:clamp(1.7rem,6vw,2.4rem)}.decimal-b2-rebuild-reminder strong{color:var(--decimal-ink);font-size:1.05rem}.decimal-b2-rebuild-reminder span{font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.decimal-b2-card-bank{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.75rem;grid-template-columns:repeat(auto-fill,minmax(min(100%,9rem),12rem));justify-content:start;gap:.45rem;min-width:0;max-width:100%;padding:.55rem;display:grid}.decimal-b2-card-bank.is-digit-bank{grid-template-columns:repeat(auto-fill,minmax(min(100%,4.5rem),6rem))}.decimal-b2-card-bank.is-drop-ready,.decimal-b2-destination.is-drop-ready{border-style:dashed}.decimal-b2-card-bank.is-decimal-drag-over,.decimal-b2-destination.is-decimal-drag-over{border-color:var(--decimal-focus);box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--decimal-focus) 32%, transparent);outline:2px solid var(--decimal-ink);outline-offset:2px}.decimal-b2-bank-complete{color:var(--decimal-ink);text-align:center;grid-column:1/-1;margin:0;padding:.45rem;font-weight:850}.decimal-b2-return-button{background:var(--decimal-surface);border:1px solid var(--decimal-line);color:var(--decimal-ink);border-radius:.55rem;grid-column:1/-1;justify-self:center;min-height:2.75rem;padding:.45rem .7rem;font-size:.75rem;font-weight:800}.decimal-b2-drag-hint{color:var(--decimal-muted);text-align:center;margin:0;font-size:.78rem;font-weight:800}.decimal-b2-contribution-card,.decimal-b2-digit-tile{background:var(--decimal-surface);border:2px solid var(--decimal-accent);color:var(--decimal-ink);font-variant-numeric:tabular-nums;border-radius:.65rem;width:100%;min-width:0;min-height:3.25rem;padding:.45rem;font-size:1.1rem;font-weight:900}.decimal-place-value-stage .decimal-b2-semantic-item{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;grid-template-columns:.8rem minmax(0,1fr);align-items:center;gap:.25rem;display:grid;position:relative}.decimal-b2-semantic-item:active{cursor:grabbing}.decimal-b2-semantic-item.is-dragging{visibility:hidden}.decimal-b2-drag-handle{color:var(--decimal-muted);background-image:radial-gradient(circle,currentColor 1.25px,#0000 1.5px);background-position:50%;background-size:5px 5px;width:.75rem;height:1.2rem}.decimal-b2-drag-preview{box-sizing:border-box;height:var(--decimal-preview-height);inline-size:var(--decimal-preview-width);left:var(--decimal-preview-left);opacity:.96;pointer-events:none;min-width:0;max-width:none;top:var(--decimal-preview-top);width:var(--decimal-preview-width);z-index:1000;flex:none;place-self:auto;margin:0;position:fixed;transform:none;box-shadow:0 .75rem 1.5rem #0f172a3d}.decimal-b2-drag-preview[data-decimal-drag-preview]{box-sizing:border-box;height:var(--decimal-preview-height);inline-size:var(--decimal-preview-width);pointer-events:none;min-width:0;max-width:none;width:var(--decimal-preview-width);flex:none;place-self:auto;position:fixed;transform:none}.decimal-b2-drag-preview[data-decimal-preview-kind=scale-digit],.decimal-b2-drag-preview[data-decimal-preview-kind=ordering-decimal]{grid-template-columns:.8rem minmax(0,1fr);align-items:center;gap:.25rem;display:grid}.decimal-b2-drag-preview[data-decimal-preview-kind=scale-digit] .decimal-b2-drag-preview-content,.decimal-b2-drag-preview[data-decimal-preview-kind=ordering-decimal] .decimal-b2-drag-preview-content{grid-column:2}.decimal-b2-drag-preview-content{grid-column:1/-1;justify-content:center;align-items:center;width:100%;height:100%;display:flex}.decimal-b2-digit-tile{font-size:1.35rem}.decimal-b2-contribution-card.is-selected,.decimal-b2-digit-tile.is-selected{background:var(--decimal-soft);border-color:var(--decimal-focus);box-shadow:inset 0 0 0 2px var(--decimal-accent-strong)}.decimal-b2-contribution-card:disabled,.decimal-b2-digit-tile:disabled{color:var(--decimal-ink);cursor:default}.decimal-b2-place-bands{grid-template-columns:minmax(7rem,auto) 1.5rem minmax(0,1fr);align-items:stretch;gap:.45rem;min-width:0;max-width:100%;display:grid}.decimal-b2-place-band{grid-template-columns:repeat(auto-fit,minmax(min(100%,7rem),1fr));gap:.45rem;min-width:0;display:grid}.decimal-b2-place-band.is-fraction{background:var(--decimal-fraction);border:1px solid var(--decimal-line);border-radius:.75rem;padding:.4rem}.decimal-b2-destination{background:var(--decimal-surface);border:2px solid var(--decimal-line);border-radius:.7rem;gap:.35rem;min-width:0;padding:.45rem;display:grid}.decimal-b2-destination.is-drop-ready:after{color:var(--decimal-muted);content:"Drop here";text-align:center;font-size:.67rem;font-weight:850}.decimal-b2-destination>strong{color:var(--decimal-ink);text-align:center;word-break:normal;font-size:.78rem;line-height:1.2}.decimal-b2-destination.is-zero-place{border-style:dashed}.decimal-b2-destination-content{justify-content:center;align-items:center;min-width:0;min-height:3rem;display:flex}.decimal-b2-destination-content>span{color:var(--decimal-muted);text-align:center;font-size:.72rem;font-weight:800;line-height:1.25}.decimal-b2-destination>button{background:var(--decimal-soft);border:1px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.5rem;padding:.35rem;font-size:.7rem;font-weight:850;line-height:1.2}.decimal-b2-destination>button:disabled{background:var(--decimal-panel);border-color:var(--decimal-line);color:var(--decimal-muted);cursor:default}.decimal-b2-expanded{background:var(--decimal-success-bg);border:2px solid var(--decimal-success);color:var(--decimal-success);text-align:center;border-radius:.75rem;justify-items:center;gap:.55rem;min-width:0;padding:.7rem;display:grid}.decimal-b2-expanded p{margin:0}.decimal-b2-expanded>strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;max-width:100%;line-height:1.45}.decimal-zero-alignment{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.8rem;gap:.4rem;min-width:0;padding:.55rem;display:grid}.decimal-zero-heading,.decimal-zero-row{grid-template-columns:repeat(5,minmax(0,1fr));gap:.3rem;min-width:0;display:grid}.decimal-zero-heading span{color:var(--decimal-muted);text-align:center;word-break:normal;font-size:.68rem;font-weight:850;line-height:1.15}.decimal-zero-alignment>section{grid-template-columns:minmax(6rem,.55fr) minmax(0,1.45fr);align-items:center;gap:.45rem;min-width:0;display:grid}.decimal-zero-alignment header{gap:.1rem;min-width:0;display:grid}.decimal-zero-alignment header span{color:var(--decimal-muted);font-size:.72rem;font-weight:800}.decimal-zero-alignment header strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;font-size:1.2rem}.decimal-zero-row span{background:var(--decimal-surface);border:1px solid var(--decimal-line);color:var(--decimal-ink);border-radius:.4rem;justify-content:center;align-items:center;min-height:2.75rem;font-size:1rem;font-weight:900;display:flex}.decimal-zero-row .is-point{border-color:var(--decimal-accent);color:var(--decimal-accent-strong);font-family:Georgia,Times New Roman,serif;font-size:1.6rem}.decimal-zero-row .is-ghost{color:var(--decimal-muted);border-style:dashed}.decimal-zero-verdicts,.decimal-zero-explanations{border:0;gap:.45rem;min-width:0;margin:0;padding:0;display:grid}.decimal-zero-verdicts legend,.decimal-zero-explanations legend{color:var(--decimal-ink);margin-bottom:.4rem;font-weight:850}.decimal-zero-verdicts>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;display:grid}.decimal-zero-explanations>div{gap:.45rem;display:grid}.decimal-zero-verdicts label,.decimal-zero-explanations label{background:var(--decimal-surface);border:2px solid var(--decimal-line);color:var(--decimal-ink);cursor:pointer;border-radius:.65rem;min-width:0;min-height:2.9rem;display:grid;position:relative}.decimal-zero-verdicts label{place-items:center}.decimal-zero-explanations label{align-items:center}.decimal-zero-verdicts label.is-selected,.decimal-zero-explanations label.is-selected{background:var(--decimal-soft);border-color:var(--decimal-accent-strong);box-shadow:inset 0 0 0 2px var(--decimal-accent)}.decimal-zero-verdicts input,.decimal-zero-explanations input{width:1px;height:1px;position:absolute;top:50%;left:50%}.decimal-zero-verdicts label span,.decimal-zero-explanations label span{padding:.55rem .65rem;font-weight:800;line-height:1.4}.decimal-zero-restart-row{justify-content:center;display:flex}.decimal-zero-restart-button{color:var(--decimal-muted);text-underline-offset:.2em;background:0 0;border:0;min-height:2.75rem;padding:.45rem .65rem;font-size:.78rem;font-weight:800;text-decoration:underline}.decimal-b3-operation{background:var(--decimal-soft);border:2px solid var(--decimal-accent);color:var(--decimal-ink);text-align:center;border-radius:.8rem;padding:.65rem .85rem}.decimal-b3-operation strong{font-variant-numeric:tabular-nums;font-size:clamp(1.35rem,5vw,2rem)}.decimal-b3-scale-concept,.decimal-b3-scale-active-prompt{color:var(--decimal-ink);text-align:center;margin:0;line-height:1.4}.decimal-b3-scale-concept{font-weight:800}.decimal-b3-scale-layout-boundary{min-width:0;container-type:inline-size}.decimal-b3-scale-workspace{grid-template-columns:minmax(0,1fr);gap:.65rem;min-width:0;max-width:100%;display:grid}@container (min-width:54rem){.decimal-b3-scale-workspace{grid-template-columns:repeat(2,minmax(0,1fr))}}.decimal-b3-place-model{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.85rem;gap:.4rem;min-width:0;padding:.55rem;display:grid}.decimal-b3-place-model>h3,.decimal-b3-place-model>p{color:var(--decimal-ink);text-align:center;margin:0}.decimal-b3-place-model>p{font-variant-numeric:tabular-nums;font-size:1.05rem;font-weight:900}.decimal-b3-place-model .decimal-b2-place-band{grid-template-columns:repeat(auto-fit,minmax(min(100%,5.75rem),1fr));justify-content:center}.decimal-b3-place-model .decimal-b2-place-bands>.decimal-inline-separator{background:var(--decimal-panel);border:1px solid var(--decimal-line);border-radius:.5rem;min-height:2.5rem;padding:.25rem .1rem}@container (min-width:34rem){.decimal-b3-place-model .decimal-b2-place-bands{grid-template-columns:minmax(0,1fr) 1.35rem minmax(0,1fr)}.decimal-b3-place-model .decimal-b2-place-bands>.decimal-inline-separator{place-content:center;align-self:stretch;min-height:0}}.decimal-b3-place-cell,.decimal-b3-destination{background:var(--decimal-surface);border:2px solid var(--decimal-line);text-align:center;border-radius:.65rem;gap:.35rem;min-width:0;min-height:4.35rem;padding:.45rem;display:grid}.decimal-b3-place-cell>strong,.decimal-b3-destination>strong{color:var(--decimal-muted);overflow-wrap:normal;white-space:nowrap;word-break:normal;font-size:.7rem}.decimal-b3-structural-place,.decimal-b3-origin-empty,.decimal-b3-destination-content>span{color:var(--decimal-muted);justify-content:center;align-items:center;min-height:2.25rem;font-size:.72rem;font-weight:800;display:flex}.decimal-b3-origin-empty{border:1px dashed var(--decimal-line);border-radius:.5rem;min-height:2.9rem}.decimal-b3-destination.is-drop-ready{border-style:dashed}.decimal-b3-destination.is-decimal-drag-over{border-color:var(--decimal-focus);box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--decimal-focus) 32%, transparent);outline:2px solid var(--decimal-ink);outline-offset:2px}.decimal-b3-destination-content{justify-content:center;align-items:center;min-width:0;min-height:2.9rem;display:flex}.decimal-b3-destination.can-place-selected{cursor:pointer}.decimal-b3-destination:focus-visible{outline:3px solid var(--decimal-focus);outline-offset:3px}.decimal-b3-scale-digit,.decimal-b3-order-card{background:var(--decimal-surface);border:2px solid var(--decimal-accent);color:var(--decimal-ink);font-variant-numeric:tabular-nums;border-radius:.6rem;min-width:0;padding:.45rem;font-weight:900}.decimal-b3-scale-digit{inline-size:min(100%,7.5rem);justify-self:center;width:min(100%,7.5rem);max-width:7.5rem;min-height:3.75rem;font-size:1.25rem}.decimal-b3-scale-digit-body{justify-items:center;gap:.05rem;min-width:0;display:grid}.decimal-b3-scale-digit-body b{font-size:1.25rem}.decimal-b3-scale-digit-body small{color:var(--decimal-muted);white-space:nowrap;font-size:.68rem;font-weight:800;line-height:1.2}.decimal-b3-scale-digit-body.is-placed-value{align-items:center;min-height:2.25rem}.decimal-b3-transition-summary{background:var(--decimal-soft);border:1px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.75rem;gap:.35rem;padding:.65rem .75rem;display:grid}.decimal-b3-transition-summary ul{flex-wrap:wrap;gap:.35rem .9rem;margin:0;padding-left:1.2rem;display:flex}.decimal-b3-scale-digit.is-selected,.decimal-b3-order-card.is-selected{background:var(--decimal-soft);border-color:var(--decimal-focus);box-shadow:inset 0 0 0 2px var(--decimal-accent-strong)}.decimal-b3-result-options,.decimal-b3-evidence-options,.decimal-b3-relation-options{border:0;gap:.45rem;min-width:0;margin:0;padding:0;display:grid}.decimal-b3-result-options legend,.decimal-b3-evidence-options legend,.decimal-b3-relation-options legend{color:var(--decimal-ink);margin-bottom:.35rem;font-weight:850}.decimal-b3-result-options>div,.decimal-b3-evidence-options>div,.decimal-b3-relation-options>div,.decimal-b3-readiness-options{grid-template-columns:repeat(auto-fit,minmax(min(100%,8rem),1fr));gap:.5rem;display:grid}.decimal-b3-result-options button,.decimal-b3-evidence-options button,.decimal-b3-relation-options button,.decimal-b3-readiness-options button{background:var(--decimal-surface);border:2px solid var(--decimal-line);color:var(--decimal-ink);border-radius:.65rem;min-width:0;padding:.55rem;font-weight:850}.decimal-b3-result-options button.is-selected,.decimal-b3-evidence-options button.is-selected,.decimal-b3-relation-options button.is-selected,.decimal-b3-readiness-options button.is-selected{background:var(--decimal-soft);border-color:var(--decimal-accent-strong);box-shadow:inset 0 0 0 2px var(--decimal-accent)}.decimal-b3-relation-options button{justify-content:center;align-items:center;gap:.5rem;display:flex}.decimal-b3-relation-options button strong{font-size:1.35rem}.decimal-b3-pair-numerals{grid-template-columns:minmax(0,1fr) 3rem minmax(0,1fr);align-items:center;gap:.55rem;display:grid}.decimal-b3-pair-numerals>span{background:var(--decimal-panel);border:2px solid var(--decimal-line);text-align:center;border-radius:.75rem;gap:.2rem;padding:.6rem;display:grid}.decimal-b3-pair-numerals small,.decimal-b3-readiness-question>p{color:var(--decimal-muted);font-size:.74rem;font-weight:800}.decimal-b3-pair-numerals strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums;font-size:1.45rem}.decimal-b3-pair-numerals>b{color:var(--decimal-accent-strong);text-align:center;font-size:1.75rem}.decimal-b3-comparison-alignment{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.8rem;gap:.45rem;min-width:0;padding:.6rem;display:grid}.decimal-b3-comparison-heading,.decimal-b3-comparison-row{grid-template-columns:repeat(var(--decimal-comparison-columns), minmax(0, 1fr));gap:.35rem;min-width:0;display:grid}.decimal-b3-comparison-heading span{color:var(--decimal-muted);overflow-wrap:anywhere;text-align:center;font-size:.65rem;font-weight:800}.decimal-b3-comparison-alignment>section{grid-template-columns:minmax(5rem,.65fr) minmax(0,2fr);gap:.35rem;min-width:0;display:grid}.decimal-b3-comparison-alignment header{display:grid}.decimal-b3-comparison-alignment header span{color:var(--decimal-muted);font-size:.7rem;font-weight:800}.decimal-b3-comparison-alignment header strong{color:var(--decimal-ink);font-variant-numeric:tabular-nums}.decimal-b3-comparison-row span{background:var(--decimal-surface);border:1px solid var(--decimal-line);color:var(--decimal-ink);border-radius:.4rem;justify-content:center;align-items:center;min-height:2.75rem;font-weight:900;display:flex}.decimal-b3-comparison-row .is-point{border-color:var(--decimal-accent);color:var(--decimal-accent-strong);font-family:Georgia,Times New Roman,serif;font-size:1.45rem}.decimal-b3-comparison-row .is-ghost{color:var(--decimal-muted);border-style:dashed}.decimal-b3-ordering-task{gap:.65rem;min-width:0;display:grid}.decimal-b3-order-bank{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.75rem;grid-template-columns:repeat(auto-fill,minmax(min(100%,9rem),9rem));justify-content:start;gap:.5rem;min-width:0;padding:.6rem;display:grid}.decimal-b3-order-bank.is-drop-ready{border-style:dashed}.decimal-b3-order-bank.is-decimal-drag-over{border-color:var(--decimal-focus);box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--decimal-focus) 32%, transparent);outline:2px solid var(--decimal-ink);outline-offset:2px}.decimal-b3-order-bank>p{color:var(--decimal-ink);grid-column:1/-1;margin:0;padding:.5rem;font-weight:850}.decimal-b3-order-card{inline-size:min(100%,9rem);justify-self:start;width:min(100%,9rem);max-width:9rem;min-height:3.25rem;font-size:1.1rem}.decimal-b3-order-destinations{gap:.5rem;display:grid}.decimal-b3-order-destinations .decimal-b3-destination{text-align:left;grid-template-columns:minmax(7rem,.4fr) minmax(0,1fr);align-items:center;min-height:4.75rem}.decimal-b3-order-destinations .decimal-b3-destination-content{justify-content:flex-start;min-height:3.25rem}.decimal-b3-readiness-progress{flex-wrap:wrap;gap:.4rem;display:flex}.decimal-b3-readiness-progress>span{background:var(--decimal-panel);border:2px solid var(--decimal-line);color:var(--decimal-ink);border-radius:999px;align-items:center;gap:.3rem;min-height:2.75rem;padding:.35rem .55rem;display:flex}.decimal-b3-readiness-progress>span.is-current{border-color:var(--decimal-accent-strong)}.decimal-b3-readiness-progress>span.is-complete:after{content:"✓";font-weight:900}.decimal-b3-readiness-progress small{color:var(--decimal-muted);font-size:.65rem;font-weight:800}.decimal-b3-readiness-question{background:var(--decimal-panel);border:2px solid var(--decimal-line);border-radius:.85rem;gap:.65rem;min-width:0;padding:.75rem;display:grid}.decimal-b3-readiness-question>p,.decimal-b3-readiness-question>h3{color:var(--decimal-ink);margin:0}.decimal-b3-readiness-place-chart{grid-template-columns:repeat(3,minmax(0,1fr));gap:.45rem;display:grid}.decimal-b3-readiness-place-chart span{background:var(--decimal-surface);border:1px solid var(--decimal-line);text-align:center;border-radius:.55rem;gap:.25rem;min-width:0;padding:.5rem;display:grid}.decimal-b3-readiness-place-chart small{color:var(--decimal-muted);overflow-wrap:anywhere;font-size:.68rem;font-weight:800}.decimal-b3-readiness-place-chart b,.decimal-b3-highlighted-number,.decimal-b3-readiness-expression{color:var(--decimal-ink);font-variant-numeric:tabular-nums;text-align:center;font-size:1.35rem;font-weight:900}.decimal-b3-highlighted-number,.decimal-b3-readiness-expression{margin:0}.decimal-b3-highlighted-number mark{background:var(--decimal-soft);border:2px solid var(--decimal-accent);color:var(--decimal-ink);border-radius:.3rem;padding:.1rem .2rem}.decimal-b3-readiness-complete{background:var(--decimal-success-bg);border:2px solid var(--decimal-success);color:var(--decimal-success);border-radius:.75rem;margin:0;padding:.7rem;font-weight:850}@media (max-width:760px){.decimal-b2-place-bands{grid-template-columns:1fr}.decimal-b2-place-bands>.decimal-inline-separator{background:var(--decimal-panel);border:1px solid var(--decimal-line);border-radius:.5rem;min-height:2.75rem;padding:.35rem}.decimal-b2-place-band{grid-template-columns:repeat(auto-fit,minmax(min(100%,6.5rem),1fr))}.decimal-zero-alignment>section{grid-template-columns:1fr}.decimal-zero-alignment header{justify-content:space-between;align-items:baseline;gap:.5rem;display:flex}.decimal-b3-place-model .decimal-b2-place-bands{grid-template-columns:1fr}.decimal-b3-order-destinations .decimal-b3-destination{grid-template-columns:minmax(7rem,.4fr) minmax(0,1fr)}}@media (max-width:480px){.decimal-b2-target,.decimal-b2-rebuild-reminder{display:grid}.decimal-b2-place-band{grid-template-columns:repeat(2,minmax(0,1fr))}.decimal-b2-place-band.is-fraction{grid-template-columns:1fr}.decimal-zero-heading span{font-size:.59rem}.decimal-zero-row span{font-size:.9rem}.decimal-zero-verdicts>div,.decimal-b3-result-options>div,.decimal-b3-evidence-options>div,.decimal-b3-relation-options>div,.decimal-b3-readiness-options,.decimal-b3-pair-numerals,.decimal-b3-comparison-alignment>section{grid-template-columns:1fr}.decimal-b3-comparison-heading span{font-size:.58rem}.decimal-b3-order-destinations .decimal-b3-destination{text-align:center;grid-template-columns:1fr}.decimal-b3-order-destinations .decimal-b3-destination-content{justify-content:center}.decimal-b3-readiness-progress>span{flex:5.5rem}}