.lab-workspace .lab-focus-panel[hidden],.lab-workspace .lab-question-workspace[hidden]{display:none!important}.lab-workspace .lab-focus-panel{min-width:0;margin:0}.lab-workspace .lab-activity-content{min-width:0}.lab-workspace .lab-focus-panel>.lab-section{margin-block:0}.lab-workspace .lab-section{margin-block:28px}.lab-workspace .lab-focus-panel>.lab-section+.lab-section{margin-top:32px}.lab-workspace .lab-focus-panel :is(.lab-materials,.lab-reading-grid){margin-top:0}.lab-workspace .lab-reading-grid{display:block}.lab-workspace .lab-reading-grid>.lab-section{margin-block:0}.lab-workspace .lab-task{margin:0 auto 28px}.lab-workspace .lab-task .ai-content{margin-inline:auto}.lab-workspace .lab-focus-panel[data-view=read]{max-width:880px;margin-inline:auto}.lab-workspace .lab-focus-panel[data-view=read] :is(.lab-task,.lab-materials,.lab-model-conditions){max-width:var(--lab-measure);margin-inline:auto}.lab-workspace .lab-focus-panel[data-view=read] .lab-materials{margin-bottom:28px}.lab-workspace .lab-focus-panel[data-view=read] .lab-material{width:100%;margin-inline:auto}.lab-workspace .lab-focus-panel[data-view=read] .lab-comparison-materials{max-width:100%}.lab-workspace .lab-focus-panel[data-view=respond]{max-width:820px;margin-inline:auto}.lab-workspace .lab-focus-panel[data-view=respond] .lab-response-section{border-top:0;padding-top:0}.lab-workspace .lab-focus-panel[data-view=respond] .lab-response-section>h2{margin-bottom:18px}.lab-workspace .lab-focus-panel[data-view=respond] :is(.lab-response,.lab-response-control,.lab-paragraph-draft){max-width:100%;margin-block:20px}.lab-workspace .lab-question-switcher{border-bottom:1px solid var(--lab-line);align-items:center;gap:4px;width:fit-content;max-width:100%;margin:0 0 22px;display:flex}.lab-workspace .lab-question-switcher button{min-width:0;min-height:44px;color:var(--lab-muted);border:0;border-bottom:2px solid #0000;border-radius:0;justify-content:center;padding:8px 14px;font-size:.875rem;line-height:1.5}.lab-workspace .lab-question-switcher button[aria-pressed=true]{color:var(--lab-blue);border-bottom-color:var(--lab-blue);font-weight:600}.lab-workspace .lab-question-switcher button:hover{color:var(--lab-blue);background:#f7f9fd}.lab-workspace .lab-question-workspaces{gap:0;margin:0 0 24px}.lab-workspace .lab-question-workspace{border-top:0;padding-top:0}.lab-workspace .lab-question-prompt>h2{margin-bottom:12px;font-size:1.125rem}.lab-workspace .lab-response textarea{min-height:200px}.lab-workspace :is(.lab-response textarea,.lab-control textarea,.lab-prediction textarea,.lab-inquiry textarea,.lab-speaking-attempt textarea){background:#fff;border-color:#bdcde3;border-radius:6px;padding:14px 16px}.lab-workspace :is(.lab-response textarea,.lab-control textarea,.lab-prediction textarea,.lab-inquiry textarea,.lab-speaking-attempt textarea):hover{border-color:#8da7cb}.lab-workspace .lab-model-workbench.with-output{flex-direction:column;gap:22px;margin:0;display:flex}.lab-workspace .lab-model-workbench>*{width:100%;min-width:0}.lab-workspace .lab-primary-parameters>.lab-controls{grid-template-columns:repeat(auto-fit,minmax(min(100%,360px),1fr));gap:20px 36px;padding:16px 0 20px;display:grid}.lab-workspace .lab-primary-parameters .lab-control-number{grid-template-columns:108px minmax(0,1fr);align-items:center;gap:6px 16px;display:grid}.lab-workspace .lab-primary-parameters .lab-control label{margin:0;font-size:.875rem}.lab-workspace .lab-primary-parameters .lab-number-control{grid-template-columns:84px minmax(0,1fr);gap:20px}.lab-workspace .lab-primary-parameters .lab-control-number>.meta{grid-column:2;margin:0;font-size:.8125rem}.lab-workspace .lab-observation-workspace{gap:20px}.lab-workspace .lab-observation-workspace>h3{margin:0;font-size:1rem}.subject-lab.lab-workspace .lab-model-scene{background:0 0;border:0;border-radius:0;margin:0;padding:0}.lab-workspace .lab-scene-caption{margin-bottom:10px}.lab-workspace .lab-scene-caption strong{font-size:.9375rem;font-weight:500}.lab-workspace .lab-scene-caption>span{font-size:.8125rem}.lab-workspace .lab-model-scene>.ai-content{color:var(--lab-muted);font-size:1rem;line-height:1.65}.lab-workspace .lab-model-scene .lab-scene-readings{gap:8px 24px;margin:0;padding-block:8px 16px;font-size:.875rem}.lab-workspace .lab-scene-play{margin:12px 0 4px}.lab-workspace .lab-scene-play>input{min-width:70px}.lab-workspace .lab-scene-view-tabs{gap:4px;margin:4px 0 16px}.lab-workspace .lab-scene-view-tabs button{border-color:#0000;padding:8px 12px;font-size:.875rem}.lab-workspace .lab-scene-view-tabs button[aria-pressed=true]{color:#2455c4;background:#eff4ff;border-color:#c8d8f6}.lab-workspace .lab-output{background:0 0;border-radius:0;padding:0}.lab-workspace .lab-output>.lab-graph{margin-top:0}.lab-workspace .lab-output>.lab-graph:last-child{margin-bottom:0}.lab-workspace .lab-metrics{border-top:1px solid var(--lab-line);flex-wrap:wrap;gap:18px 36px;margin:16px 0 24px;padding-top:18px;display:flex}.lab-workspace .lab-metrics>div{flex:140px}.lab-workspace .lab-metrics dt{font-size:.8125rem}.lab-workspace .lab-metrics dd{font-size:1.125rem}.lab-workspace .lab-metrics dd span{font-size:.875rem}.lab-workspace .lab-observations{max-width:var(--lab-measure)}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure){border:0;border-top:1px solid var(--lab-line);background:0 0;border-radius:0;min-width:0;margin-block:0;padding:0}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)>summary{color:#2d466a;cursor:pointer;align-items:center;gap:10px;width:100%;min-height:54px;padding:13px 0;font-size:.9375rem;font-weight:500;line-height:1.6;list-style:none;display:flex}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)>summary::-webkit-details-marker{display:none}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)>summary:before{content:"";border-bottom:1.5px solid;border-right:1.5px solid;flex:0 0 7px;width:7px;height:7px;margin:0 5px 0 3px;transform:rotate(-45deg)}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)[open]>summary:before{transform:rotate(45deg)}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)>summary:hover{color:var(--lab-blue)}.lab-workspace :is(.lab-model-parameters,.lab-inquiry-disclosure,.lab-prediction-disclosure,.lab-learning-disclosure,.lab-results-disclosure)>summary>svg:first-child{display:none}.lab-workspace .lab-parameter-summary{color:var(--lab-muted);margin-left:auto;font-size:.8125rem;font-weight:400}.lab-workspace .lab-model-parameters>.lab-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 40px;padding-block:12px 26px;display:grid}.lab-workspace .lab-model-parameters .lab-control-group{min-width:0}.lab-workspace .lab-model-parameters .lab-control label{margin-bottom:8px;font-size:.875rem}.lab-workspace .lab-model-parameters .lab-control .meta{font-size:.8125rem;line-height:1.6}.lab-workspace .lab-model-parameters .lab-number-control{grid-template-columns:84px minmax(0,1fr);gap:18px}.lab-workspace .lab-model-parameters>h3{margin:0 0 20px;padding-top:20px}.lab-workspace .lab-model-parameters>.lab-controls:has(.lab-control-textarea,.lab-control-code,.lab-order,.lab-connections){grid-template-columns:minmax(0,1fr)}.lab-workspace .lab-inquiry-disclosure>.lab-inquiry{margin:12px 0 28px}.lab-workspace .lab-prediction-disclosure>.lab-prediction{margin:4px 0 24px;display:block}.lab-workspace .lab-learning-disclosure>.lab-learning-tools{margin:2px 0 20px}.lab-workspace .lab-learning-disclosure .lab-learning-actions{border-top:0;padding-top:0}.lab-workspace .lab-results-disclosure>.lab-output{padding:10px 0 24px}.lab-workspace .lab-motion-equations{border-top:1px solid var(--lab-line);margin:12px 0 0;padding:0}.lab-workspace .lab-motion-equations>summary{min-height:44px;color:var(--lab-muted);cursor:pointer;align-items:center;gap:10px;padding:8px 0;font-size:.875rem;line-height:1.6;list-style:none;display:flex}.lab-workspace .lab-motion-equations>summary::-webkit-details-marker{display:none}.lab-workspace .lab-motion-equations>summary:before{content:"";border-bottom:1.5px solid;border-right:1.5px solid;width:7px;height:7px;margin:0 4px;transform:rotate(-45deg)}.lab-workspace .lab-motion-equations[open]>summary:before{transform:rotate(45deg)}.lab-workspace .lab-motion-equations>summary:hover{color:var(--lab-blue)}.lab-workspace .lab-motion-equations>.ai-content{color:var(--lab-muted);margin:6px 0 18px;font-size:1rem}.lab-workspace .lab-model-conditions{border-block:1px solid var(--lab-line);background:0 0;border-radius:0;margin:24px 0;padding:20px 0}.lab-workspace details .lab-model-conditions{border:0;margin:4px 0 20px;padding:0}.lab-workspace .lab-build-workbench.with-output{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px}.lab-workspace .lab-build-workbench .lab-controls{gap:24px}.lab-workspace .lab-run-actions{gap:8px 18px;margin:18px 0 22px}.lab-workspace .lab-run-actions :is(.secondary,.text-button){font-size:.875rem}.lab-workspace .lab-focus-primary-action{border-top:1px solid var(--lab-line);flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:4px;padding-top:20px;display:flex}.lab-workspace .lab-focus-primary-action .primary{min-width:190px;min-height:46px;padding-inline:22px;font-size:.9375rem}.lab-workspace .lab-focus-primary-action .text-button{font-size:.9375rem}.lab-workspace .lab-focus-primary-action>.meta{margin:0}.lab-workspace .lab-feedback-section{margin-top:28px;padding-top:24px}.lab-workspace .lab-feedback-section>h2{margin-bottom:20px}.lab-workspace .lab-feedback-actions{gap:10px 12px}.lab-workspace .lab-feedback-actions :is(.primary,.secondary,.text-button){font-size:.875rem}.lab-workspace .lab-feedback-options{background:0 0;border:0;margin-top:8px;padding:0}.lab-workspace .lab-feedback-options>summary{min-height:44px;color:var(--lab-muted);cursor:pointer;align-items:center;gap:10px;padding:8px 0;font-size:.875rem;font-weight:400;line-height:1.6;list-style:none;display:flex}.lab-workspace .lab-feedback-options>summary::-webkit-details-marker{display:none}.lab-workspace .lab-feedback-options>summary:before{content:"";border-bottom:1.5px solid;border-right:1.5px solid;flex:0 0 7px;width:7px;height:7px;margin:0 4px;transform:rotate(-45deg)}.lab-workspace .lab-feedback-options[open]>summary:before{transform:rotate(45deg)}.lab-workspace .lab-feedback-options>summary:hover{color:var(--lab-blue)}.lab-workspace .lab-feedback-options>.lab-target-picker,.lab-workspace .lab-feedback-options>.lab-feedback-actions{margin-block:12px}.lab-workspace .lab-target-picker{font-size:.875rem}.lab-workspace .lab-target-picker select{max-width:100%;color:var(--lab-ink);background:#fff;border:1px solid #c6d3e6;border-radius:6px;padding:9px 12px}.lab-workspace .lab-secondary-sections{margin-top:24px}.lab-workspace .lab-secondary-sections :is(.lab-reference,.lab-checkpoint-history){max-width:100%;margin-top:0;padding-top:0}.lab-workspace .lab-secondary-sections :is(.lab-reference,.lab-checkpoint-history)>summary{align-items:center;min-height:54px;font-size:.875rem;font-weight:500;display:flex}.lab-workspace .lab-secondary-sections .lab-source-list{border-top:1px solid var(--lab-line);margin-top:0;padding-block:4px}.lab-workspace .lab-learning-note{max-width:100%;margin-top:24px;padding-top:20px;font-size:.8125rem}.lab-workspace :is(button,select,summary){touch-action:manipulation}.lab-workspace button:disabled{cursor:not-allowed}@media (max-width:900px){.lab-workspace .lab-build-workbench.with-output{grid-template-columns:minmax(0,1fr);gap:28px}.lab-workspace .lab-model-parameters>.lab-controls{gap:24px}}@media (max-width:600px){.lab-workspace .lab-question-switcher{width:100%}.lab-workspace .lab-question-switcher button{flex:1 1 0;padding-inline:8px}.lab-workspace .lab-focus-panel>.lab-section+.lab-section{margin-top:26px}.lab-workspace .lab-model-workbench.with-output{gap:18px}.lab-workspace .lab-model-parameters>.lab-controls{grid-template-columns:minmax(0,1fr);gap:20px;padding-top:4px}.lab-workspace .lab-primary-parameters>.lab-controls{gap:20px;padding-block:12px 16px}.lab-workspace .lab-primary-parameters .lab-control-number{grid-template-columns:minmax(0,1fr);gap:8px}.lab-workspace .lab-primary-parameters .lab-number-control{grid-template-columns:76px minmax(0,1fr);gap:16px}.lab-workspace .lab-primary-parameters .lab-control-number>.meta{grid-column:auto}.lab-workspace .lab-parameter-summary{display:none}.lab-workspace .lab-model-parameters .lab-number-control{grid-template-columns:76px minmax(0,1fr);gap:16px}.lab-workspace .lab-scene-caption{gap:2px 12px}.lab-workspace .lab-scene-caption>span{font-size:.75rem}.lab-workspace .lab-scene-view-tabs{gap:2px}.lab-workspace .lab-scene-view-tabs button{padding-inline:8px;font-size:.8125rem}.lab-workspace .lab-model-scene .lab-scene-readings{gap:4px 16px;font-size:.8125rem}.lab-workspace .lab-scene-play{gap:8px}.lab-workspace .lab-scene-play .secondary{padding-inline:12px;font-size:.875rem}.lab-workspace .lab-scene-play output{min-width:48px;font-size:.8125rem}.lab-workspace .lab-metrics{gap:16px 24px}.lab-workspace .lab-metrics>div{flex-basis:calc(50% - 24px)}.lab-workspace .lab-focus-primary-action{gap:10px;padding-top:18px}.lab-workspace .lab-focus-primary-action .primary{width:100%}.lab-workspace .lab-focus-primary-action .text-button{justify-content:center;margin-inline:auto}.lab-workspace .lab-focus-primary-action>.meta{width:100%}.lab-workspace .lab-response textarea{min-height:220px}.lab-workspace :is(.lab-response textarea,.lab-control textarea,.lab-prediction textarea,.lab-inquiry textarea,.lab-speaking-attempt textarea){padding:12px}.lab-workspace .lab-feedback-actions{align-items:stretch}.lab-workspace .lab-feedback-actions .primary{width:100%}.lab-workspace .lab-feedback-actions .secondary{flex:120px}.lab-workspace .lab-target-picker{gap:8px;display:grid}.lab-workspace .lab-target-picker select{width:100%}.lab-workspace .lab-focus-panel[data-view=read] .lab-comparison-materials{grid-template-columns:minmax(0,1fr)}}
:is(.study-app:has(.lab-workspace[data-focus=true])>.app-header,.study-app:has(.lab-workspace[data-focus=true]) .sidebar,.study-app:has(.lab-workspace[data-focus=true]) .nav-scrim){display:none}.study-app:has(.lab-workspace[data-focus=true]) .workspace{margin:0;padding:0}.main-column:has(.lab-workspace[data-focus=true]){max-width:none;margin:0;padding:0}.subject-lab.lab-workspace{--lab-toolbar-height:118px;--lab-header-top:var(--header);--lab-canvas-width:1120px;--lab-page-gutter:40px;--lab-blue:#245bdf;--lab-ink:#182b49;--lab-muted:#536784;--lab-line:#e1e8f2;--lab-surface:#f7f9fd;--lab-measure:68ch;min-height:calc(100dvh - var(--lab-header-top));font-family:var(--font-sans);background:#fff;padding-bottom:0}.subject-lab.lab-workspace[data-focus=true]{--lab-header-top:0px}.lab-workspace .lab-sticky{top:var(--lab-header-top);z-index:20;background:#fff;position:sticky}.subject-lab.lab-workspace .lab-focus-toolbar{min-height:64px;padding:8px var(--lab-page-gutter);border-bottom:1px solid var(--lab-line);flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:24px;margin:0;display:flex}.subject-lab.lab-workspace .lab-heading-group{flex:0 auto;align-items:center;min-width:0;display:flex}.subject-lab.lab-workspace .lab-heading-group .back-link{min-height:44px;color:var(--lab-ink);white-space:nowrap;gap:12px;margin:0;padding:8px 0;font-size:1rem;font-weight:600;line-height:1.4}.lab-workspace .lab-heading-group .back-link svg{color:#486384;flex:none}.lab-workspace .lab-heading-group .back-link:hover{color:var(--lab-blue)}.lab-workspace .lab-toolbar-actions{flex-wrap:nowrap;align-items:center;gap:10px;min-width:0;padding:0;display:flex}.lab-workspace .lab-save-state{color:var(--lab-muted);flex:0 auto;align-items:center;gap:7px;margin-right:12px;font-size:.8125rem;line-height:1.4;display:inline-flex}.lab-workspace .lab-save-state svg{color:var(--lab-blue);flex:none}.lab-workspace .lab-save-state.error{color:#a02f32}.lab-workspace .lab-toolbar-actions :is(select,summary),.lab-workspace .lab-focus-toggle{color:#3d5577;background:#fff;border:1px solid #0000;border-radius:6px;min-height:44px;padding:8px 10px;font-size:.875rem;font-weight:500;line-height:1.4}.lab-workspace .lab-toolbar-actions :is(button,summary,select):hover{background:#f2f6fd}.lab-workspace .lab-language select{cursor:pointer;width:66px;color:var(--lab-blue)}.lab-workspace .lab-reading-settings{position:relative}.lab-workspace .lab-reading-settings>summary{cursor:pointer;justify-content:center;align-items:center;gap:5px;min-width:48px;list-style:none;display:flex}.lab-workspace .lab-reading-settings>summary::-webkit-details-marker{display:none}.lab-workspace .lab-reading-settings[open]>summary{color:var(--lab-blue);background:#edf3ff}.lab-workspace .lab-reading-settings>div{z-index:3;background:#fff;border:1px solid #ccd8e9;border-radius:8px;width:232px;padding:18px;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 8px 24px #213b611a}.lab-workspace .lab-reading-settings>div label{margin-bottom:8px;font-size:.875rem;font-weight:500;display:block}.lab-workspace .lab-reading-settings>div select{border-color:#c6d3e6;width:100%;font-size:1rem}.lab-workspace .lab-focus-toggle{cursor:pointer;white-space:nowrap;flex:none;justify-content:center;align-items:center;gap:7px;display:flex}.lab-workspace .lab-focus-toggle>span{display:none}.lab-workspace .lab-section-nav{border-bottom:1px solid var(--lab-line);justify-content:center;gap:0;width:min(100%,420px);min-height:54px;margin:0 auto;padding:0;display:flex}.lab-workspace .lab-section-nav button{min-width:0;min-height:54px;color:var(--lab-muted);text-align:center;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;flex:1 1 0;padding:13px 22px 12px;font-size:.9375rem;font-weight:500;line-height:1.5;transition:color .12s ease-out,border-color .12s ease-out;position:relative}.lab-workspace .lab-section-nav button[aria-selected=true]{color:var(--lab-blue);border-bottom-color:var(--lab-blue);font-weight:600}.lab-workspace .lab-section-nav button:hover{color:var(--lab-blue);background:#f9fbff}.lab-workspace .lab-reading-body{width:100%;max-width:calc(var(--lab-canvas-width) + 2 * var(--lab-page-gutter));padding:30px var(--lab-page-gutter) 56px;margin:0 auto;container:lab-content/inline-size}.lab-workspace .lab-focus-heading{text-align:center;max-width:920px;margin:0 auto 30px}.lab-workspace .lab-focus-heading .lab-focus-course{color:var(--lab-muted);margin:0 0 10px;font-size:.875rem;font-weight:500;line-height:1.5}.subject-lab.lab-workspace .lab-focus-heading h1{letter-spacing:-.03em;text-wrap:balance;max-width:36ch;margin:0 auto;font-size:clamp(1.6rem,2.5vw,2.15rem);font-weight:650;line-height:1.25}.lab-workspace .lab-focus-heading>p:not(.lab-focus-course){max-width:66ch;color:var(--lab-muted);font-size:var(--lab-body-size);text-wrap:pretty;margin:12px auto 0;line-height:1.6}.lab-workspace :is([id^=lab-material],[id^=lab-source],#lab-explore,#lab-response,#lab-feedback){scroll-margin-top:calc(var(--lab-header-top) + var(--lab-toolbar-height) + 24px)}.lab-workspace [tabindex="-1"]:focus{outline:none}.lab-workspace :is(button,select,summary,a,input,textarea):focus-visible{outline:2px solid var(--lab-blue);outline-offset:4px}.lab-workspace ::selection{color:#17366c;background:#dbe7ff}.lab-workspace :is(input,textarea){caret-color:var(--lab-blue)}.lab-workspace :is(pre,[role=region],textarea){scrollbar-width:thin;scrollbar-color:#adbed7 #f7f9fd}@media (min-width:1600px){.subject-lab.lab-workspace .lab-focus-toolbar{padding-inline:max(40px,50vw - 720px)}}@media (max-width:900px){.subject-lab.lab-workspace{--lab-page-gutter:28px}.lab-workspace .lab-reading-body{padding-top:28px}}@media (max-width:600px){.subject-lab.lab-workspace{--lab-page-gutter:20px;--lab-toolbar-height:110px}.subject-lab.lab-workspace .lab-focus-toolbar{gap:12px;min-height:60px;padding-block:8px}.subject-lab.lab-workspace .lab-heading-group .back-link{gap:8px;font-size:.875rem}.lab-workspace .lab-toolbar-actions{gap:1px}.lab-workspace .lab-save-state{margin-right:4px}.lab-workspace .lab-save-state:not(.error){clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.lab-workspace .lab-save-state.error{max-width:8ch;font-size:.75rem}.lab-workspace .lab-language select{width:58px;padding-inline:6px}.lab-workspace .lab-reading-settings>summary{min-width:44px;padding-inline:8px}.lab-workspace .lab-focus-toggle{width:44px;padding-inline:10px}.lab-workspace .lab-section-nav{width:calc(100% - 2 * var(--lab-page-gutter));min-height:50px}.lab-workspace .lab-section-nav button{min-height:50px;padding:12px 8px 10px;font-size:.875rem}.lab-workspace .lab-reading-body{padding-top:26px;padding-bottom:40px}.lab-workspace .lab-focus-heading{margin-bottom:26px}.lab-workspace .lab-focus-heading .lab-focus-course{margin-bottom:9px;font-size:.8125rem}.subject-lab.lab-workspace .lab-focus-heading h1{font-size:1.6rem;line-height:1.25}.lab-workspace .lab-focus-heading>p:not(.lab-focus-course){margin-top:10px;font-size:1rem;line-height:1.55}.lab-workspace .lab-reading-settings>div{right:-44px}}@media (max-width:359px){.subject-lab.lab-workspace{--lab-page-gutter:16px}.subject-lab.lab-workspace .lab-focus-toolbar{gap:6px}.subject-lab.lab-workspace .lab-heading-group .back-link{gap:6px;font-size:.8125rem}.lab-workspace .lab-language select{width:54px}.subject-lab.lab-workspace .lab-focus-heading h1{font-size:1.5rem}}@media (prefers-reduced-motion:reduce){.lab-workspace .lab-section-nav button{transition:none}}
.lab-stem-scene{width:100%;min-width:0}.lab-stem-scene figure{margin:0}.lab-stem-scene>figure>figcaption{color:#23364f;margin:0 0 1rem;font-size:1.125rem;font-weight:600}.lab-stem-view-choices{flex-wrap:wrap;gap:.5rem;margin-bottom:.75rem;display:flex}.lab-stem-view-choices button{min-height:44px}.lab-stem-view-choices .active{background:#edf3ff;border-color:#85a6ef}.lab-stem-caption{color:#52637a;max-width:66ch;margin:1rem 0 0;font-size:14px;line-height:1.6}.lab-probability-root{background:#edf3ff;border-left:3px solid #285ad7;gap:1rem;padding:12px 16px;display:flex}.lab-probability-branches{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:16px;display:grid}.lab-probability-branches section{border-left:2px solid #b6cbed;padding:0 0 0 16px}.lab-probability-branches h3{margin:.25rem 0;font-size:18px}.lab-probability-branches p{margin:.5rem 0;font-size:16px}.lab-probability-branches ul{gap:14px;margin:0;padding:0;list-style:none;display:grid}.lab-probability-branches li{gap:8px;font-size:15px;line-height:1.5;display:flex}.lab-probability-branches li div{gap:3px;display:grid}.lab-particle-states{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;display:grid}.lab-particle-states>section{background:#f7f9fc;border-radius:8px;min-width:0;padding:16px}.lab-particle-states h3{margin:0 0 1rem;font-size:18px}.lab-particle-amount h4{justify-content:space-between;gap:12px;margin:10px 0;font-size:16px;display:flex}.lab-particle-amount h4 span{font-weight:400}.lab-particle-dots{color:#52637a;flex-wrap:wrap;align-items:center;gap:3px;min-height:28px;font-size:14px;display:flex}.lab-molecule{flex:none;width:36px;height:28px}.lab-molecule circle.hydrogen{fill:#e6edfc;stroke:#4269a8;stroke-width:1.5px}.lab-molecule circle.oxygen{fill:#f8dacf;stroke:#b75d3e;stroke-width:1.5px}.lab-molecule text{fill:#243a55;text-anchor:middle;font-size:10px;font-weight:700}.lab-punnett{border-collapse:collapse;table-layout:fixed;width:100%;font-size:16px}.lab-punnett caption{text-align:left;color:#52637a;margin-bottom:12px;font-size:14px}.lab-punnett th,.lab-punnett td{text-align:center;overflow-wrap:break-word;border:1px solid #d8e3f2;padding:14px 8px}.lab-punnett th{background:#f6f8fc;font-weight:500}.lab-punnett td strong{color:#245bc6;font-size:22px;display:block}.lab-punnett td span{margin-top:6px;font-size:14px;display:block}.lab-genotype-summary{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px;display:grid}.lab-genotype-summary>div{gap:4px;font-size:14px;display:grid}.lab-genotype-summary strong{font-size:18px}@media (max-width:600px){.lab-probability-branches,.lab-particle-states{grid-template-columns:1fr;gap:16px}.lab-punnett th,.lab-punnett td{padding:12px 4px;font-size:14px}.lab-punnett td strong{font-size:20px}.lab-punnett td span{font-size:12px}.lab-genotype-summary{gap:8px}}
.lab-expression-scene{min-width:0;margin:20px 0 28px;container:expression-scene/inline-size}.lab-expression-scene figure{min-width:0;margin:0}.lab-expression-scene figure>svg{width:100%;height:auto;display:block}.lab-expression-scene figcaption{color:#324765;margin:10px 0 0;font-size:16px;line-height:1.6}.lab-storyboard{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.lab-storyboard figcaption{gap:10px;display:flex}.lab-storyboard figcaption>span{color:#526886;font-variant-numeric:tabular-nums}.lab-expression-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;display:grid}.lab-expression-pair figure[data-selected=true] svg{outline-offset:3px;border-radius:8px;outline:2px solid #285ad7}.lab-speaking-scaffold{border-block:1px solid var(--line,#dce4ef);margin:22px 0 8px;padding:0 2px}.lab-speaking-scaffold summary{cursor:pointer;color:#324765;min-height:44px;padding:14px 0}.lab-speaking-scaffold p{font-size:var(--lab-reading-size,18px);line-height:1.8}.lab-reading-sequence{gap:26px;max-width:66ch;display:grid}.lab-reading-sequence article{border-bottom:1px solid var(--line,#dce4ef);padding:0 0 22px}.lab-reading-sequence article[data-turn=true]{background:#f0f5ff;border-bottom:0;border-radius:8px;padding:18px}.lab-reading-sequence header{flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:10px;display:flex}.lab-reading-sequence header>span:first-child{color:#526886;font-size:14px}.lab-reading-sequence .ai-content{font-size:var(--lab-reading-size,18px);line-height:1.8}.lab-evidence-reader{background:#f6f8fc;border-radius:10px;max-width:66ch;padding:24px}.lab-evidence-reader header{margin-bottom:12px}.lab-evidence-reader h3{margin:0;font-size:18px}.lab-evidence-selectable{-webkit-user-select:text;user-select:text;margin-bottom:18px;line-height:1.8}.lab-evidence-selectable::selection,.lab-evidence-selectable ::selection{color:#1e3658;background:#cfdefb}.lab-evidence-reader blockquote{overflow-wrap:anywhere;margin:12px 0}.lab-evidence-reader button{min-height:44px}.lab-safeguard-summary{max-width:66ch;margin:0;padding:0;list-style:none}.lab-safeguard-summary li{border-bottom:1px solid var(--line,#dce4ef);gap:7px;padding:16px 0;display:grid}.lab-safeguard-summary strong{color:#526886;font-size:15px}.lab-safeguard-summary span{font-size:var(--lab-reading-size,18px);line-height:1.7}@container expression-scene (max-width:600px){.lab-storyboard,.lab-expression-pair{grid-template-columns:1fr;gap:24px}.lab-storyboard figure>svg,.lab-expression-pair figure>svg{max-width:350px;margin:auto}.lab-storyboard figcaption,.lab-expression-pair figcaption{max-width:350px;margin:12px auto 0}}@media (max-width:420px){.lab-evidence-reader{padding:16px}.lab-reading-sequence article[data-turn=true]{padding:14px}}
.lab-society-scene{color:#24344a;min-width:0;margin-block:1rem 1.5rem}.lab-society-caption{color:#53667f;max-width:75ch;margin:12px 0!important;font-size:14px!important;line-height:1.6!important}.lab-risk-tree{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-block:20px;display:grid}.lab-risk-option{border-top:3px solid #315ad1;min-width:0;padding:16px 0}.lab-risk-option+.lab-risk-option{border-color:#39806e}.lab-risk-option h3{margin:0 0 16px;font-size:20px;line-height:1.4}.lab-risk-option ul{border-left:1px solid #b4c2d7;margin:0;padding:0 0 0 18px;list-style:none}.lab-risk-option li{justify-content:space-between;align-items:center;gap:12px;padding:14px 0;line-height:1.5;display:flex;position:relative}.lab-risk-option li:before{content:"";background:#b4c2d7;width:12px;height:1px;position:absolute;top:50%;left:-18px}.lab-risk-option small{color:#53667f;font-size:14px;display:block}.lab-risk-option strong{white-space:nowrap;font-size:18px}.lab-risk-expected{background:#f1f5fb;justify-content:space-between;gap:12px;padding:14px;display:flex;font-size:15px!important;line-height:1.5!important}.lab-flood-images{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.lab-flood-images figure{min-width:0;margin:0}.lab-flood-images figcaption{margin:0 0 10px;font-size:17px;font-weight:600}.lab-flood-images a{color:#2759cf;align-items:center;min-height:44px;font-size:14px;display:inline-flex}.lab-flood-viewport{aspect-ratio:4/5;isolation:isolate;background:#e9eef3;overflow:hidden}.lab-flood-transform{width:100%;height:100%;transition:transform .15s;position:relative}.lab-flood-transform img{object-fit:contain;width:100%;height:100%;display:block}.lab-flood-region{pointer-events:none;border:3px dashed #fff;outline:1px solid #122b52;position:absolute;box-shadow:inset 0 0 0 1px #122b52}@media (max-width:650px){.lab-risk-tree,.lab-flood-images{grid-template-columns:minmax(0,1fr);gap:20px}.lab-risk-expected,.lab-risk-option li{flex-wrap:wrap}.lab-flood-viewport{max-height:600px}}@media (prefers-reduced-motion:reduce){.lab-flood-transform{transition:none}}
.main-column:has(.subject-lab){max-width:1300px}.subject-lab{--lab-blue:#2759cf;--lab-ink:#2c394f;--lab-muted:#586983;--lab-line:#dce4ef;--lab-surface:#f7f9fd;--lab-body-size:1.125rem;--lab-prose-leading:1.7;--lab-measure:66ch;width:100%;min-width:0;color:var(--lab-ink);text-align:left;overflow-wrap:break-word;padding-bottom:40px;font-size:1rem;line-height:1.6;container:lab-content/inline-size}.subject-lab[data-text-size=large]{--lab-body-size:1.25rem}.subject-lab :is(h1,h2,h3,h4,button,summary,label,legend){word-break:normal;overflow-wrap:break-word}.subject-lab h1{letter-spacing:-.025em;margin:0;font-size:1.75rem;font-weight:650;line-height:1.3}.subject-lab h2{letter-spacing:-.015em;margin:0 0 16px;font-size:1.375rem;font-weight:600;line-height:1.4}.subject-lab h3{margin:28px 0 12px;font-size:1.125rem;font-weight:600;line-height:1.5}.subject-lab p{line-height:inherit}.subject-lab :is(.meta,.fine-print){color:var(--lab-muted);font-size:.875rem;line-height:1.65}.subject-lab :is(button,input,textarea,select){font-family:inherit}.subject-lab button{text-align:left;font-size:1rem}.subject-lab :is(button,input,textarea,select,summary,a):focus-visible{outline:2px solid var(--lab-blue);outline-offset:3px}.subject-lab :is(input,textarea){caret-color:var(--lab-blue)}.subject-lab :is(input,textarea)::placeholder{color:#62728a;opacity:1}.subject-lab :is(.primary,.secondary,.text-button,.back-link,.icon-button){min-height:44px}.subject-lab .icon-button{min-width:44px}.subject-lab :is(button,summary){touch-action:manipulation}.subject-lab a{color:var(--lab-blue);text-underline-offset:.2em}.subject-lab ::selection{color:#1d3565;background:#dce7ff}.subject-lab :is(input,select,textarea){accent-color:var(--lab-blue)}.subject-lab .back-link{color:var(--lab-blue);cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;padding:8px 0;display:inline-flex}.subject-lab .ai-content{max-width:var(--lab-measure);font-size:var(--lab-body-size);line-height:var(--lab-prose-leading);word-break:normal;overflow-wrap:break-word}.subject-lab .ai-content p{margin-bottom:.9em}.subject-lab .ai-content :is(h1,h2){margin:1.4em 0 .55em;font-size:1.22em;line-height:1.4}.subject-lab .ai-content :is(h3,h4,h5,h6){margin:1.3em 0 .5em;font-size:1.05em}.subject-lab .ai-content>:first-child{margin-top:0}.subject-lab .ai-content>:last-child{margin-bottom:0}.subject-lab .ai-content blockquote{border-left-width:1px;padding-left:1em}.subject-lab .ai-content :is(ul,ol){line-height:inherit}.subject-lab :is(.ai-content,.lab-reading-prose):lang(zh),.subject-lab .lab-feedback:lang(zh){--lab-measure:36ic;--lab-prose-leading:1.8}.subject-lab :is(.ai-math-block,.ai-table-scroll,pre){max-width:100%}.subject-lab .ai-content .ai-math-block{overflow-x:auto}.lab-home-header{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:32px;display:flex}.lab-home-header p{color:var(--lab-muted);margin:10px 0 0;font-size:1rem}.lab-level{color:var(--lab-muted);vertical-align:middle;border:1px solid #ccd7e8;border-radius:5px;margin-left:8px;padding:2px 8px;font-size:.875rem;font-weight:500;line-height:1.5;display:inline-flex}.lab-saving{color:var(--lab-muted);padding-top:6px;font-size:.875rem;line-height:1.6}.lab-activity-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;display:grid}.lab-activity-choice{min-width:0;color:inherit;cursor:pointer;background:0 0;border:0;flex-direction:column;align-items:stretch;padding:0;display:flex}.lab-activity-choice>div:last-child{padding:20px 0 0}.lab-activity-choice h2{margin-bottom:8px;font-size:1.375rem}.lab-activity-choice p{color:var(--lab-muted);max-width:48ch;margin:0 0 12px;font-size:1rem}.lab-activity-choice span{color:var(--lab-blue);align-items:center;gap:8px;min-height:44px;font-size:1rem;font-weight:500;display:flex}.lab-activity-art{background:#f2f6fd;border:1px solid #e0e8f5;border-radius:10px;place-items:center;height:180px;transition:background-color .15s;display:grid;overflow:hidden}.lab-activity-choice:nth-child(2) .lab-activity-art{background:#f6f7fa}.lab-activity-choice:hover .lab-activity-art{background:#eaf0fd}.lab-activity-art svg{fill:none;stroke:#4471d3;stroke-width:2.2px;stroke-linecap:round;stroke-linejoin:round;width:210px;height:140px}.lab-activity-art svg rect{fill:#f9fbff}.lab-activity-art svg circle{fill:#e9efff}.lab-activity-art :is(.muted,.lab-motif-axis){stroke:#a3b7d9;stroke-width:1.5px}.lab-history{margin-top:40px}.lab-history h2{margin-bottom:12px}.lab-history-row{border-top:1px solid var(--lab-line);align-items:center;gap:16px;padding:16px 0;display:flex}.lab-history-open{min-width:0;color:var(--lab-ink);cursor:pointer;background:0 0;border:0;flex-direction:column;flex:1;gap:6px;padding:4px 0;display:flex}.lab-history-open>span{font-size:1rem;font-weight:500}.lab-history-open small{color:var(--lab-muted);font-size:.875rem}.lab-learning-note{border-top:1px solid var(--lab-line);max-width:76ch;color:var(--lab-muted);margin-top:40px;padding-top:24px;font-size:.875rem;line-height:1.7}.lab-workspace-header{margin-bottom:28px;position:relative}.lab-workspace-header>.back-link{margin-bottom:16px}.lab-workspace-header>div{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.lab-workspace-header .lab-saving{margin-top:8px;display:block}.lab-activity-content{min-width:0;container:lab-content/inline-size}.lab-section{min-width:0;scroll-margin-top:calc(var(--lab-header-top,0px) + var(--lab-toolbar-height,190px) + 24px);margin-block:36px}.lab-activity-content>.lab-section:first-child,.lab-reading-grid>.lab-section{margin-top:0}.lab-task{max-width:var(--lab-measure);margin-bottom:32px}.lab-task details{margin-top:12px}.lab-task summary,.lab-assumptions summary{min-height:44px;color:var(--lab-blue);cursor:pointer;align-items:center;gap:8px;width:fit-content;font-size:1rem;display:flex}.lab-task ol,.lab-assumptions ul{color:var(--lab-muted);max-width:var(--lab-measure);padding-left:24px;font-size:1rem;line-height:1.7}.lab-task li,.lab-assumptions li{margin-block:8px}.lab-reading-grid{grid-template-columns:minmax(0,1fr);grid-template-areas:"material""explore""response";align-items:start;gap:32px;margin-block:0 36px;display:grid}.lab-reading-grid>*,.lab-reading-response{min-width:0}.lab-reading-grid>.lab-section{margin-block:0}.lab-reading-grid>#lab-material{grid-area:material}.lab-reading-grid>#lab-explore{grid-area:explore}.lab-reading-grid>#lab-response{grid-area:response}.lab-reading-grid .lab-material-section>:last-child{margin-bottom:0}.lab-reading-response{border-top:1px solid var(--lab-line);padding-top:24px}.lab-materials{grid-template-columns:minmax(0,1fr);gap:32px;margin:24px 0 32px;display:grid}.lab-material{min-width:0;font-size:var(--lab-body-size);padding:0}.lab-material h2{margin-bottom:16px}.lab-material{scroll-margin-top:calc(var(--lab-header-top,0px) + var(--lab-toolbar-height,190px) + 24px)}.lab-source-date{color:var(--lab-muted);margin:-4px 0 16px;font-size:.875rem;line-height:1.7}.lab-material .ai-content{max-width:var(--lab-measure)}.lab-material img{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:460px;margin:16px auto;display:block}.lab-material>a,.lab-feedback-sources a,.lab-source-list a{max-width:100%;min-height:44px;color:var(--lab-blue);text-underline-offset:3px;overflow-wrap:anywhere;align-items:center;gap:8px;margin-top:8px;font-size:.875rem;display:inline-flex}.lab-comparison-materials .lab-material{border-top:1px solid var(--lab-line);padding-top:20px}.lab-source-jumps{flex-wrap:wrap;gap:8px 20px;margin:16px 0;display:flex}.lab-source-jumps :is(a,button){align-items:center;min-height:44px;font-size:1rem;display:inline-flex}.lab-paragraph-draft,.lab-paragraph-transfer{max-width:var(--lab-measure);margin-block:32px}.lab-question-set{grid-template-columns:minmax(0,1fr);gap:28px;margin:28px 0;display:grid}.lab-question-set article{border-top:1px solid var(--lab-line);min-width:0;padding-top:20px}.lab-question-set h2{color:var(--lab-ink);font-size:1.125rem}.lab-question-set .meta{font-size:.875rem}.lab-question-workspaces{gap:36px;margin-block:28px;display:grid}.lab-question-workspace{border-top:1px solid var(--lab-line);grid-template-columns:minmax(0,1fr);gap:24px;min-width:0;padding-top:24px;display:grid}.lab-question-workspace>*{min-width:0}.lab-question-workspace h3{margin-top:0}.lab-question-comparison>summary{cursor:pointer;min-height:44px;color:var(--lab-blue);align-items:center;font-size:1rem;display:flex}.lab-response-control{max-width:var(--lab-measure);margin-block:24px}.lab-workbench{margin:28px 0 16px;display:block}.lab-workbench.with-output{grid-template-columns:minmax(0,1fr);align-items:start;gap:28px;display:grid}.lab-controls{flex-direction:column;gap:24px;min-width:0;display:flex}.lab-control label,.lab-response,.lab-prediction,.lab-speaking-attempt label{color:var(--lab-ink);font-size:1rem;font-weight:500;line-height:1.6;display:block}.lab-control label{margin-bottom:10px}.lab-control input[type=number],.lab-control select,.lab-control textarea,.lab-response textarea,.lab-prediction textarea,.lab-speaking-attempt textarea,.lab-connection-add select{width:100%;min-height:44px;color:var(--lab-ink);background:#fff;border:1px solid #bccbe0;border-radius:6px;padding:10px 12px;font-family:inherit;font-size:1rem;line-height:1.6}.lab-control textarea,.lab-response textarea,.lab-prediction textarea,.lab-speaking-attempt textarea{resize:vertical;font-size:var(--lab-body-size);line-height:var(--lab-prose-leading);font-weight:400}.lab-number-control{grid-template-columns:96px minmax(0,1fr);align-items:center;gap:16px;display:grid}.lab-number-control input[type=range]{width:100%;min-width:0;min-height:44px;accent-color:var(--lab-blue);margin:0;padding:0}.lab-control .meta{margin:8px 0 0;font-size:.875rem;font-weight:400;line-height:1.65}.lab-control .lab-code{tab-size:2;white-space:pre;background:#f8fafc;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1rem;line-height:1.65;overflow-x:auto}.lab-controls fieldset{border:0;min-width:0;margin:0;padding:0}.lab-controls legend{margin-bottom:12px;padding:0;font-size:1rem;font-weight:600}.lab-controls fieldset>p.meta{margin:0 0 16px}.lab-order ol{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.lab-order li{border:1px solid var(--lab-line);background:#fbfcff;border-radius:6px;align-items:center;gap:12px;padding:10px 12px;font-size:1rem;display:flex}.lab-order li>span{flex:1;min-width:0}.lab-order li>div{flex-shrink:0;gap:4px;display:flex}.lab-order .icon-button{width:44px;height:44px;padding:10px}.lab-evidence>label{cursor:pointer;align-items:flex-start;gap:12px;min-height:44px;margin-bottom:8px;padding-block:8px;font-size:1rem;line-height:1.7;display:flex}.lab-evidence input{width:20px;height:20px;accent-color:var(--lab-blue);flex-shrink:0;margin-top:4px}.lab-connection-add{flex-wrap:wrap;align-items:end;gap:12px;display:flex}.lab-connection-add label{flex:140px;min-width:0;font-size:1rem}.lab-connection-add select{margin-top:8px}.lab-connections ul{margin:16px 0 0;padding:0;list-style:none}.lab-connections li{border-bottom:1px solid var(--lab-line);flex-wrap:wrap;align-items:center;gap:12px;padding:12px 0;font-size:1rem;display:flex}.lab-connections li>span{flex:180px}.lab-output{background:var(--lab-surface);border-radius:8px;min-width:0;padding:24px}.lab-observation-workspace{flex-direction:column;gap:24px;min-width:0;display:flex}.lab-observation-workspace>.lab-model-scene{margin:0}.lab-observation-workspace>h3,.lab-model-parameters>h3{margin-top:0;margin-bottom:16px}.lab-model-conditions{max-width:var(--lab-measure);background:var(--lab-surface);border-radius:6px;margin:24px 0;padding:20px 24px}.lab-model-conditions h3{margin:0 0 12px;font-size:1rem}.lab-model-conditions ul{margin:0;padding-left:22px;font-size:1rem;line-height:1.7}.lab-model-conditions li+li{margin-top:8px}.lab-graph,.lab-system-view{margin:0 0 20px}.lab-graph figcaption{color:var(--lab-muted);flex-wrap:wrap;gap:12px 20px;margin-top:12px;font-size:.875rem;line-height:1.65;display:flex}.lab-graph figcaption span{align-items:center;gap:8px;display:inline-flex}.lab-system-view figcaption{color:var(--lab-muted);font-size:.875rem;line-height:1.65}.lab-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px;margin:16px 0 24px;display:grid}.lab-metrics div{min-width:0}.lab-metrics dt{color:var(--lab-muted);margin-bottom:6px;font-size:.875rem}.lab-metrics dd{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0;font-size:1.375rem;font-weight:600;line-height:1.5}.lab-metrics dd span{font-size:1rem;font-weight:400}.lab-observations{font-size:var(--lab-body-size);color:var(--lab-ink)}.lab-checks{margin:24px 0 0;padding:0;font-size:1rem;list-style:none}.lab-checks li{border-top:1px solid var(--lab-line);padding:20px 0 4px}.lab-checks li.supported>strong{color:#237359}.lab-checks li.check>strong{color:#90451c}.lab-check-status{color:var(--lab-muted);margin-left:12px;font-size:.875rem;display:inline-block}.lab-checks .ai-content{margin-top:12px}.lab-errors{color:#9b3d36;font-size:1rem}.lab-run-actions{flex-wrap:wrap;align-items:center;gap:12px 20px;margin:24px 0 32px;display:flex}.lab-prediction{max-width:var(--lab-measure);margin:28px 0}.lab-prediction>.meta{margin-left:8px;font-size:.875rem;font-weight:400}.lab-prediction textarea,.lab-response textarea{margin-top:12px;display:block}.lab-response{max-width:var(--lab-measure);margin:32px 0 20px}.lab-assumptions{margin:24px 0 32px}.lab-feedback-section{border-top:1px solid var(--lab-line);margin:36px 0 0;padding-top:28px}.lab-feedback-actions{flex-wrap:wrap;align-items:center;gap:12px 20px;display:flex}.lab-feedback-section>p.meta{margin-top:12px}.lab-feedback{max-width:var(--lab-measure);font-size:var(--lab-body-size);line-height:var(--lab-prose-leading);margin-top:32px}.lab-feedback ul{line-height:inherit;padding-left:24px}.lab-feedback li{margin-block:8px}.lab-feedback-sources{flex-wrap:wrap;gap:12px 20px;display:flex}.lab-notice{color:#425d8a;background:#f1f5ff;border-radius:5px;padding:12px 16px;font-size:.875rem;line-height:1.7}.lab-reference{border-top:1px solid var(--lab-line);max-width:var(--lab-measure);font-size:var(--lab-body-size);line-height:var(--lab-prose-leading);margin-top:32px;padding-top:24px}.lab-reference>ul{color:var(--lab-muted);padding-left:24px;font-size:1rem;line-height:1.7}.lab-reference>ul li{margin-block:8px}.lab-reference>summary{cursor:pointer;min-height:44px;font-size:1rem;font-weight:600}.lab-extra-reflection>summary{cursor:pointer;min-height:44px;color:var(--lab-muted);align-items:center;font-size:1rem;display:flex}.lab-extra-reflection[open]>summary{margin-bottom:12px}.lab-reference[open]>summary{margin-bottom:16px}.lab-source-list{margin-top:28px;font-size:.875rem}.lab-source-list>summary{cursor:pointer;min-height:44px}.lab-source-list ul{margin:16px 0 0;padding:0;list-style:none}.lab-source-list li{padding:12px 0}.lab-source-list p{color:var(--lab-muted);margin:8px 0}.lab-source-credit{color:var(--lab-muted);margin-top:12px;font-size:.875rem;line-height:1.7;display:inline-block}.lab-trace-controls{flex-wrap:wrap;align-items:center;gap:8px;font-size:1rem;display:flex}.lab-trace-event{font-size:1rem}.lab-variables{flex-wrap:wrap;gap:20px;font-size:1rem;display:flex}.lab-variables>div{border-top:1px solid var(--lab-line);min-width:80px;max-width:100%;padding-top:12px}.lab-variables dd{max-width:100%;margin:8px 0 0;overflow-x:auto}.lab-speaking>.lab-language{color:var(--lab-muted);margin:24px 0;font-size:1rem}.lab-speaking-scene{max-width:760px;margin:28px 0}.lab-speaking-scene svg{width:100%;height:auto;display:block}.lab-speaking-scene figcaption{color:var(--lab-muted);margin-top:12px;font-size:.875rem;line-height:1.7}.lab-speaking>.lab-controls{margin-bottom:28px}.lab-recorder{flex-wrap:wrap;align-items:center;gap:12px;margin:28px 0 16px;display:flex}.lab-recorder .fine-print,.lab-recorder .error{flex-basis:100%;margin:0}.lab-recording-time{color:#994237;font-variant-numeric:tabular-nums;font-size:1rem}.lab-speaking-attempts{grid-template-columns:minmax(0,1fr);gap:32px;margin-top:32px;display:grid}.lab-speaking-attempt{border-top:1px solid var(--lab-line);min-width:0;padding-top:24px}.lab-speaking-attempt header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.lab-speaking-attempt header h2{margin:0}.lab-speaking-attempt audio{width:100%;max-width:100%;height:44px;margin:20px 0;display:block}.lab-speaking-attempt>label{margin:24px 0 16px}.lab-speaking-attempt textarea{margin-top:12px;font-weight:400;display:block}.lab-confirmed{color:#267557}.lab-attempt-options{margin-top:20px;font-size:.875rem}.lab-attempt-options summary{cursor:pointer;width:fit-content;min-height:44px;color:var(--lab-muted)}.lab-attempt-options button{margin-top:12px;display:block}.lab-speaking-comparison{max-width:var(--lab-measure);color:var(--lab-muted);font-size:1rem}.lab-checkpoint-history{border-top:1px solid var(--lab-line);max-width:76ch;margin-top:32px;padding-top:24px;font-size:1rem}.lab-checkpoint-history>summary{color:var(--lab-ink);cursor:pointer;min-height:44px;font-weight:600}.lab-checkpoint-history>summary span{color:var(--lab-muted);margin-left:8px;font-weight:400}.lab-checkpoint-history>label{margin:20px 0 10px;font-size:.875rem;display:block}.lab-checkpoint-history>select{width:100%;min-height:44px;color:var(--lab-ink);background:#fff;border:1px solid #bccbe0;border-radius:6px;padding:10px 12px;font-size:1rem}.lab-checkpoint-content{padding-top:16px;line-height:1.7}.lab-checkpoint-content>section,.lab-checkpoint-content>details{margin:24px 0}.lab-checkpoint-content summary{cursor:pointer;min-height:44px}.lab-checkpoint-content h3,.lab-checkpoint-content h4{margin-bottom:12px;font-size:1rem}.lab-checkpoint-content h4{color:var(--lab-muted)}.lab-checkpoint-inputs dl{gap:16px;display:grid}.lab-checkpoint-inputs dt{color:var(--lab-muted);font-size:.875rem}.lab-checkpoint-inputs dd{overflow-wrap:anywhere;font-size:var(--lab-body-size);margin:8px 0 0}.lab-checkpoint-inputs pre{background:#f8fafe;padding:16px;font-size:1rem;overflow-x:auto}.lab-checkpoint-transcripts{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:24px;display:grid}.lab-metric-comparison{margin:24px 0;overflow-x:auto}.lab-metric-comparison table{border-collapse:collapse;text-align:left;width:100%;font-size:1rem}.lab-metric-comparison caption{text-align:left;color:var(--lab-muted);margin-bottom:12px}.lab-metric-comparison th,.lab-metric-comparison td{border-bottom:1px solid var(--lab-line);font-variant-numeric:tabular-nums;padding:12px}.lab-metric-comparison tbody th{font-weight:500}@container lab-content (min-width:832px){.lab-comparison-materials,.lab-speaking-attempts{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-question-set{grid-template-columns:repeat(3,minmax(0,1fr))}.lab-source-jumps{display:none}}@container lab-content (min-width:1000px){.lab-reading-grid{grid-template:"material explore""response explore"1fr/minmax(0,1fr) 340px;gap:32px 40px}.lab-reading-response{border-top:0;padding-top:0}.lab-question-workspace{grid-template-columns:minmax(0,1fr) 340px;gap:40px}.lab-workbench.with-output{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}.lab-workbench.lab-model-workbench{grid-template-columns:minmax(0,1fr) 340px;gap:32px}}@container lab-content (min-width:832px) and (max-width:919px){.subject-lab[data-text-size=large] :is(.lab-comparison-materials,.lab-speaking-attempts){grid-template-columns:minmax(0,1fr)}.subject-lab[data-text-size=large] .lab-source-jumps{display:flex}}@container lab-content (min-width:1000px) and (max-width:1119px){.subject-lab[data-text-size=large] :is(.lab-reading-grid,.lab-question-workspace,.lab-workbench.with-output){grid-template-columns:minmax(0,1fr)}.subject-lab[data-text-size=large] .lab-reading-grid{grid-template-rows:auto;grid-template-areas:"material""explore""response"}.subject-lab[data-text-size=large] .lab-reading-response{border-top:1px solid var(--lab-line);padding-top:24px}}@container lab-content (max-width:649px){.lab-activity-list{grid-template-columns:minmax(0,1fr);gap:32px}.lab-home-header{flex-wrap:wrap;gap:8px;margin-bottom:28px}.lab-activity-art{height:160px}.lab-activity-art svg{height:128px}.lab-output{padding:16px}.lab-metrics{gap:16px}.lab-history-row{gap:8px}.lab-order li{flex-wrap:wrap}.lab-order li>span{flex-basis:calc(100% - 104px)}}@media (max-width:650px){.subject-lab h1{font-size:1.5rem}.subject-lab h2{font-size:1.375rem}.lab-section{margin-block:32px}.lab-output{padding:12px}}@media (prefers-reduced-motion:reduce){.lab-activity-art{transition:none}}
