:root{color:#111;font-synthesis:none;text-rendering:optimizelegibility;--shell:#fff;--shell-raised:#f7f7f5;--paper:#fff;--graphite:#111;--muted:#6b6b68;--line:#11111129;--agent:#985438;--agent-deep:#7c402b;--human:#2855b6;background:#fff;font-family:Arial,Helvetica,sans-serif}*{box-sizing:border-box}html,body,#root{width:100%;min-width:320px;height:100%;margin:0;overflow:hidden}button{font:inherit}button:focus-visible,summary:focus-visible{outline:2px solid var(--agent);outline-offset:3px}.app-shell{background:var(--shell);grid-template-rows:58px minmax(0,1fr);height:100%;display:grid}.topbar{border-bottom:1px solid var(--line);grid-template-columns:minmax(280px,1fr) auto minmax(280px,1fr);align-items:center;height:58px;padding:0 18px;display:grid}.brand-lockup,.header-actions,.scene-switcher,.connection-row,.saved-state,.canvas-status,.rail-footer{align-items:center;display:flex}.brand-lockup{gap:10px}.brand-mark{color:#fff;background:var(--human);border-radius:50%;place-items:center;width:29px;height:29px;display:grid}.brand-name{letter-spacing:.18em;font-size:13px;font-weight:820}.brand-tag{color:var(--muted);font-size:11px}.scene-switcher{border:1px solid var(--line);border-radius:6px;gap:2px;padding:3px}.scene-switcher button{color:#666;cursor:pointer;background:0 0;border:0;border-radius:4px;align-items:center;gap:6px;height:28px;padding:0 10px;font-size:10px;font-weight:640;transition:color .15s,background .15s;display:inline-flex}.scene-switcher button:hover{color:#111}.scene-switcher button.active{color:#fff;background:var(--human)}.saved-state{color:#6f7169;gap:4px;margin:0 6px 0 8px;font-size:10px}.header-actions{justify-content:flex-end;gap:8px}.quiet-button,.demo-button{cursor:pointer;border-radius:5px;justify-content:center;align-items:center;gap:7px;height:34px;padding:0 13px;transition:transform .16s,background .16s,color .16s;display:inline-flex}.quiet-button{color:#555;border:1px solid var(--line);background:0 0}.quiet-button:hover{color:#111;background:#f4f4f2}.demo-button{color:#fff;background:var(--agent);border:1px solid #0000;font-weight:720}.demo-button:hover:not(:disabled){background:var(--agent-deep);transform:translateY(-1px)}.demo-button:disabled{cursor:wait;opacity:.8}.workspace{grid-template-columns:54px minmax(0,1fr);min-height:0;display:grid}.tool-rail{border-right:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;gap:7px;padding:14px 0;display:flex}.tool-button{color:#5f5f5c;cursor:pointer;background:0 0;border:0;border-radius:5px;place-items:center;width:36px;height:36px;padding:0;transition:color .15s,background .15s;display:grid;position:relative}.tool-button:hover,.tool-button.active{color:var(--human);background:#2855b617}.tool-button:disabled{cursor:default;opacity:.25}.tool-button:after{z-index:5;color:#fff;border:1px solid var(--line);width:max-content;box-shadow:none;content:attr(data-tooltip);opacity:0;pointer-events:none;background:#111;border-radius:4px;padding:6px 8px;font-size:10px;transition:opacity .12s,transform .12s;position:absolute;left:46px;transform:translate(-4px)}.tool-button:hover:after{opacity:1;transform:translate(0)}.tool-divider{background:var(--line);width:22px;height:1px;margin:3px 0}.canvas-stage{background:#fff;min-width:0;min-height:0;padding:10px 16px 22px;position:relative;overflow:hidden}.paper-meta{z-index:2;color:#1111117a;letter-spacing:.15em;pointer-events:none;justify-content:flex-start;gap:22px;font-size:10px;font-weight:760;display:flex;position:absolute;top:24px;left:32px;right:32px}.mode-label{color:var(--human)}.reasoning-canvas{background:var(--paper);width:100%;height:100%;box-shadow:none;touch-action:none;-webkit-user-select:none;user-select:none;border:1px solid #1111111f;border-radius:0;display:block;overflow:hidden}.mode-lasso .reasoning-canvas{cursor:crosshair}.mode-crossout .reasoning-canvas{cursor:not-allowed}.mode-draw .reasoning-canvas{cursor:crosshair}.mode-erase .reasoning-canvas{cursor:cell}.mode-select .reasoning-canvas{cursor:default}.paper-fill{fill:var(--paper)}.eyebrow-svg{fill:#20251f7a;letter-spacing:.16em;text-transform:uppercase;font-family:Arial,Helvetica,sans-serif;font-size:12px;font-weight:800}.prompt-svg{fill:var(--graphite);letter-spacing:-.035em;font-family:Arial,Helvetica,sans-serif;font-size:38px;font-weight:800}.handwritten{font-family:Segoe Print,Bradley Hand,Comic Sans MS,cursive}.given-line{fill:#384039;font-size:21px}.struck-value{opacity:.42}.ramp-fill{fill:#2d322b09}.graphite-line,.angle-arc{fill:none;stroke:#363b34;stroke-linecap:round}.ramp-line{stroke-width:5px}.floor-line{stroke-width:2px;opacity:.45}.angle-arc{stroke-width:1.6px;opacity:.7}.angle-label{fill:#4c534b;font-size:17px}.block-fill{fill:#fff;stroke:#111;stroke-width:3px;transition:fill .18s,stroke .18s}.block-hatch{fill:none;stroke:#2d342d7a;stroke-linecap:round;stroke-width:2px}.block-object,.ramp-object,.force-friction{cursor:pointer}.block-object.selected .block-fill,.block-object.highlighted .block-fill{fill:#2855b614;stroke:var(--human)}.ramp-object.selected .ramp-fill{fill:#e7a83b1f}.context-actions{animation:.22s cubic-bezier(.2,.8,.2,1) both context-in}.context-tail{fill:none;stroke:#376e6966;stroke-width:1.5px}.context-action rect{fill:var(--human);cursor:pointer}.context-action text{fill:#fff;pointer-events:none;text-anchor:middle;font-family:Segoe Print,cursive;font-size:14px}.context-action.secondary rect{fill:#0000;stroke:var(--human)}.context-action.secondary text{fill:var(--human)}.agent-ink{color:var(--agent-deep)}.force-vector path,.note-leader,.agent-rule{fill:none;stroke:var(--agent-deep);stroke-linecap:round;stroke-linejoin:round}.force-vector path{stroke-width:4px;stroke-dasharray:180;stroke-dashoffset:180px;animation:.65s cubic-bezier(.4,0,.2,1) forwards draw-vector}.force-normal path{animation-delay:.12s}.force-friction path{animation-delay:.24s}.arrow-head,.agent-label,.agent-note,.custom-annotation{fill:var(--agent-deep)}.agent-label{font-size:21px;font-weight:700}.agent-note{font-size:15px}.note-leader{stroke-width:1.8px;stroke-dasharray:120;animation:.5s .5s forwards draw-vector}.force-friction.rejected{opacity:.18}.solution-layer{animation:.5s cubic-bezier(.2,.7,.2,1) both solution-in}.agent-eyebrow{fill:var(--agent-deep)}.formula-line{fill:#31372f;font-size:24px}.formula-small{fill:#555b52;font-size:18px}.friction-term{transition:opacity .3s}.term-rejected{opacity:.22;text-decoration:line-through}.agent-rule{stroke-width:2.5px;stroke-dasharray:390;animation:.9s .12s forwards draw-vector}.answer-number{fill:var(--graphite);font-variant-numeric:tabular-nums;font-family:Arial,Helvetica,sans-serif;font-size:70px}.answer-unit{fill:#596058;font-family:Arial,Helvetica,sans-serif;font-size:24px}.answer-direction{fill:var(--agent-deep);font-size:16px}.answer-pop{transform-box:fill-box;transform-origin:0;animation:.42s cubic-bezier(.17,.89,.32,1.28) both answer-pop}.revision-note{animation:.3s .16s both revision-in}.custom-annotation{font-size:18px}.human-ink,.human-strike,.lasso-stroke{fill:none;stroke-linecap:round;stroke-linejoin:round}.human-ink{stroke:#37423b;stroke-width:3px}.human-strike{stroke:#2f6d67;stroke-width:5px;opacity:0}.human-strike.visible{opacity:.95}.lasso-stroke{stroke:#2f6d67;stroke-width:3px;stroke-dasharray:7 7}.lasso-stroke.persisted{opacity:.58}.start-hint path{fill:none;stroke:#376e6961;stroke-width:1.8px}.start-hint text{fill:#376e69;font-family:Segoe Print,cursive;font-size:15px}.start-hint text:last-child{fill:#376e69a6;font-size:11px}.scene-enter{animation:.38s cubic-bezier(.2,.75,.2,1) both scene-enter}.motion-demonstration{pointer-events:none}.motion-trail{fill:none;stroke:#a96d127a;stroke-width:2.5px;stroke-linecap:round;stroke-dasharray:8 9;animation:2.2s ease-out both motion-trail}.moving-block rect{fill:#e7a83b2e;stroke:var(--agent-deep);stroke-width:2.5px}.moving-block path{fill:none;stroke:#a96d12a6;stroke-linecap:round;stroke-width:1.5px}.motion-label{fill:var(--agent-deep);opacity:0;font-size:14px;animation:2.2s both motion-label}.history-subtitle,.thesis-detail,.source-body,.branch-detail{fill:#20251f8c;font-family:Inter,ui-sans-serif,sans-serif;font-size:12px}.timeline-rule,.source-rule,.source-divider{fill:none;stroke:#20251f3d;stroke-width:1.5px}.timeline-rule.expanded{stroke:#20251f52}.history-event{cursor:pointer;transition:opacity .3s}.event-ring{fill:var(--paper);stroke:#353b34;stroke-width:2px;transition:fill .18s,stroke .18s,r .18s}.event-core{fill:#353b34}.history-event.selected .event-ring{fill:#f5d899;stroke:var(--agent-deep);r:16px}.history-event.selected .event-core{fill:var(--agent-deep)}.event-tick{fill:none;stroke:#20251f4d;stroke-width:1.2px}.event-date{fill:#20251f8c;letter-spacing:.13em;font-family:Inter,ui-sans-serif,sans-serif;font-size:10px;font-weight:790}.event-title{fill:#2a302a;font-family:Georgia,serif;font-size:16px}.history-event.rejected .event-ring,.history-event.rejected .event-core,.history-event.contingent{opacity:.24}.event-cross{fill:none;stroke:var(--human);stroke-width:4px;stroke-linecap:round;opacity:.95}.simple-cause-object{cursor:pointer}.simple-cause{fill:none;stroke:#343b3480;stroke-width:2.4px;stroke-dasharray:8 9;transition:stroke .18s,stroke-width .18s}.simple-cause-object.selected .simple-cause{stroke:var(--agent-deep);stroke-width:3.5px}.simple-question{fill:#2e3830a6;font-size:16px}.history-context{animation:.22s both history-context-in}.history-context .context-action text{font-size:13px}.history-start-hint path,.counterfactual-prompt path{fill:none;stroke:#376e6966;stroke-width:1.7px}.history-start-hint text,.counterfactual-prompt text{fill:var(--human);font-family:Segoe Print,cursive;font-size:15px}.history-start-hint text:last-child{fill:#376e69a6;font-size:11px}.causal-background{opacity:.52}.causal-background text{fill:#72786f;letter-spacing:.12em;text-transform:uppercase;font-family:Inter,ui-sans-serif,sans-serif;font-size:9px;font-weight:760}.causal-background path{fill:none;stroke:#767c724d;stroke-width:1.2px;stroke-dasharray:3 7}.causal-links path{fill:none;stroke:var(--agent-deep);stroke-width:3px;stroke-dasharray:220;stroke-dashoffset:220px;animation:.7s forwards draw-vector}.causal-links path:nth-child(2){animation-delay:.13s}.causal-links path:nth-child(3){animation-delay:.26s}.causal-links path:nth-child(4){animation-delay:.39s}.causal-links path.weakened{stroke:#a96d1238;stroke-dasharray:5 8}.expanded-history .history-event{animation:.42s both event-arrive}.expanded-history .history-event:nth-of-type(2){animation-delay:80ms}.expanded-history .history-event:nth-of-type(3){animation-delay:.16s}.expanded-history .history-event:nth-of-type(4){animation-delay:.24s}.expanded-history .history-event:nth-of-type(5){animation-delay:.32s}.history-thesis{animation:.33s .42s both fade-in}.thesis-main{fill:var(--agent-deep);font-size:24px}.history-thesis.revised .thesis-main{fill:var(--human)}.counterfactual-prompt{animation:.3s .7s both fade-in}.counterfactual-branch{animation:.45s both revision-in}.counterfactual-branch path{fill:none;stroke:var(--human);stroke-width:3px;stroke-dasharray:260;animation:.85s forwards draw-vector}.counterfactual-branch circle,.human-arrow-head{fill:var(--human)}.branch-title{fill:var(--human);font-size:18px}.branch-detail{font-size:10px}.source-comparison{animation:.52s cubic-bezier(.2,.75,.2,1) both source-rise}.source-title{fill:#2e342e;font-family:Georgia,serif;font-size:23px}.source-body{font-size:12px}.source-note{fill:var(--agent-deep);font-size:15px}.canvas-status{color:#333;border:1px solid var(--line);height:30px;box-shadow:none;background:#fffffff5;border-radius:4px;gap:7px;padding:0 11px;font-size:11px;position:absolute;bottom:15px;left:50%;transform:translate(-50%)}.canvas-status svg{color:var(--agent)}.activity-pop{z-index:4;color:#111;pointer-events:none;background:#fffffff7;border:1px solid #1111112e;grid-template-columns:28px minmax(0,1fr);align-items:center;gap:10px;max-width:360px;padding:10px 13px 10px 10px;animation:.22s both activity-in;display:grid;position:absolute;bottom:56px;right:34px}.activity-pop>span:last-child{flex-direction:column;gap:2px;min-width:0;display:flex}.activity-pop strong{text-overflow:ellipsis;white-space:nowrap;font-size:11px;line-height:1.25;overflow:hidden}.activity-pop small{color:#6b6b68;text-overflow:ellipsis;white-space:nowrap;font-size:9px;overflow:hidden}.webmcp-badge{z-index:4;color:#111;background:#fffffff5;border:1px solid #11111129;align-items:center;gap:7px;height:28px;padding:0 10px;font-size:10px;display:flex;position:absolute;top:23px;right:34px}.webmcp-badge strong{font-size:10px}.webmcp-badge>span:last-child{color:#6b6b68}.activity-rail{border-left:1px solid var(--line);background:#191a17;grid-template-rows:auto auto minmax(0,1fr) auto auto;min-width:0;min-height:0;display:none;position:relative}.connection-row{border-bottom:1px solid var(--line);gap:10px;height:67px;padding:0 18px}.connection-row>div{flex-direction:column;flex:1;gap:3px;display:flex}.connection-row strong{color:#d8d5ca;font-size:11px;font-weight:670}.connection-row span:not(.connection-dot){color:#6f7169;font-size:9px}.connection-row>svg{color:#5d6058}.connection-dot{background:#677068;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #6770681a}.connection-dot.native,.connection-dot.legacy{background:#7daf7a;box-shadow:0 0 0 4px #7daf7a1a}.activity-heading{color:#c9c6bb;justify-content:space-between;align-items:baseline;padding:18px 18px 10px;font-size:11px;font-weight:730;display:flex}.activity-heading span:last-child{color:#60625b;font-size:9px;font-weight:500}.activity-list{min-height:0;padding:0 18px;overflow:auto}.activity-item{border-bottom:1px solid #efede213;grid-template-columns:24px minmax(0,1fr) auto;gap:9px;padding:12px 0;animation:.26s both activity-in;display:grid}.actor-mark{color:#fff;background:#777;border-radius:50%;place-items:center;width:23px;height:23px;font-family:Arial,Helvetica,sans-serif;font-size:10px;font-style:italic;font-weight:800;display:grid}.actor-mark.agent{background:var(--agent)}.actor-mark.human{color:#fff;background:var(--human)}.actor-mark.system{color:#555;border:1px solid var(--line);background:0 0}.activity-copy{flex-direction:column;gap:4px;min-width:0;display:flex}.activity-copy strong{color:#c6c4ba;text-overflow:ellipsis;white-space:nowrap;font-size:10px;font-weight:590;line-height:1.35;overflow:hidden}.activity-copy span{color:#696b64;text-overflow:ellipsis;white-space:nowrap;font-size:9px;line-height:1.35;overflow:hidden}.activity-item time{color:#53554f;font-size:8px}.tool-surface{border-top:1px solid var(--line);max-height:230px;overflow:auto}.tool-surface summary{color:#95978e;cursor:pointer;justify-content:space-between;align-items:center;padding:13px 18px;font-size:10px;list-style:none;display:flex}.tool-surface summary::-webkit-details-marker{display:none}.tool-surface summary span:last-child{width:20px;height:20px;color:var(--agent);background:#e7a83b1a;border-radius:50%;place-items:center;font-size:9px;display:grid}.tool-list{padding:0 18px 14px}.tool-list>div{border-top:1px solid #efede20f;flex-direction:column;gap:4px;padding:9px 0;display:flex}.tool-list code{color:var(--agent);font-size:9px}.tool-list span{color:#656760;font-size:8px;line-height:1.45}.rail-footer{color:#74766e;border-top:1px solid var(--line);gap:9px;min-height:52px;padding:10px 18px;font-family:Georgia,serif;font-size:9px;font-style:italic;line-height:1.4}.rail-footer svg{color:var(--agent);flex:none}@keyframes draw-vector{to{stroke-dashoffset:0}}@keyframes solution-in{0%{opacity:0;transform:translate(750px,195px)}to{opacity:1;transform:translate(730px,185px)}}@keyframes context-in{0%{opacity:0;transform:translate(380px,226px)scale(.96)}to{opacity:1;transform:translate(380px,218px)scale(1)}}@keyframes answer-pop{0%{opacity:0;transform:scale(.88)translateY(5px)}to{opacity:1;transform:scale(1)translateY(0)}}@keyframes activity-in{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}@keyframes revision-in{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes scene-enter{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}@keyframes history-context-in{0%{opacity:0;transform:translate(480px,353px)scale(.96)}to{opacity:1;transform:translate(480px,345px)scale(1)}}@keyframes event-arrive{0%{opacity:0}to{opacity:1}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes source-rise{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes motion-trail{0%{opacity:0;stroke-dashoffset:150px}24%{opacity:1}to{opacity:.18;stroke-dashoffset:0}}@keyframes motion-label{0%,58%{opacity:0;transform:translateY(5px)}78%,to{opacity:1;transform:translateY(0)}}@media (width<=1050px){.workspace{grid-template-columns:52px minmax(0,1fr)}.brand-tag,.saved-state{display:none}.topbar{grid-template-columns:1fr auto 1fr}}@media (width<=760px){html,body,#root{height:auto;min-height:100%;overflow:auto}.app-shell{grid-template-rows:auto auto;min-height:100svh}.topbar{grid-template-columns:1fr auto;height:auto;min-height:62px;padding:12px 14px}.quiet-button{display:none}.scene-switcher{grid-area:2/1/auto/-1;justify-content:center;justify-self:stretch;margin-top:9px}.scene-switcher button{flex:1;justify-content:center}.workspace{grid-template-rows:50px minmax(480px,66svh);grid-template-columns:1fr}.tool-rail{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;justify-content:center;padding:6px}.tool-divider{width:1px;height:22px;margin:0 3px}.tool-button:after{display:none}.canvas-stage{scrollbar-color:#e7a83b59 transparent;scrollbar-width:thin;padding:10px 10px 24px;overflow:auto hidden}.reasoning-canvas{width:760px;max-width:none}.mode-select .reasoning-canvas{touch-action:pan-x}.canvas-status,.activity-rail{display:none}.paper-meta{top:17px;left:18px;right:18px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}