button{font:inherit;color:inherit;background:transparent;border:1px solid var(--line,#18221c30);padding:10px 14px}button:disabled{opacity:.35;cursor:default}a{color:inherit}.utility{border:0;display:inline-flex;align-items:center}.nav-button{padding:0;display:grid;place-items:center;flex-shrink:0}.chapter{border:0}.edition{text-decoration:none}.course-image{margin:20px 0;max-width:460px}.course-image img{display:block;width:100%;max-height:32vh;object-fit:contain;object-position:left center}.course-link{display:inline-block;margin-top:25px;padding:12px 0;border-bottom:1px solid currentColor;text-decoration:none;font-size:17px}.exercise{margin-top:20px;border-top:1px solid var(--line);padding:16px 0}.exercise summary{cursor:pointer}.exercise label{display:block;margin:16px 0 8px;font-size:13px}.exercise textarea{width:100%;padding:12px;font:16px/1.5 Arial;background:var(--wash);color:inherit;border:1px solid var(--line)}dialog.overview{width:100%;height:100%;max-width:100%;max-height:100%;margin:0;border:0}dialog:not([open]){display:none}.notice[hidden]{display:none}.stage .slide{min-height:100%}.slide-heading{min-width:0}.slide-body{min-width:0}.load-error{padding:40px}.slide-1 .slide{grid-template-columns:1.15fr 1fr}.slide-1 h1{font-size:clamp(48px,6vw,96px)}.slide-1 .slide-body{justify-content:center}.slide-1 .course-image{max-width:180px}.slide-1 .course-image img{max-height:140px}@media(max-width:900px){.stage .slide{grid-template-columns:1fr}.bottom{height:auto;min-height:70px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:10px}.chapter-track{width:100%;overflow:auto;white-space:nowrap}.controls{margin-left:auto}.topbar{height:65px;gap:10px}.topbar .wordmark{font-size:20px}.wordmark>span:last-child{font-size:8px;margin-left:5px}.course-image img{max-height:300px}.slide-body{padding-bottom:20px}.stage h1{font-size:clamp(36px,8vw,65px)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(max-width:900px){.stage .slide{grid-template-rows:auto auto auto;align-content:start}.stage .slide-body{margin-top:10px}.stage .why{margin-top:24px}.stage h1{margin-bottom:20px}}

.course-nav{display:flex;align-items:center;gap:18px;flex-shrink:0}
.school-return{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.school-return:hover{text-decoration:underline;text-underline-offset:4px}
@media(max-width:600px){.topbar{height:auto;min-height:65px;flex-wrap:wrap;padding:10px 0;gap:4px 12px}.topbar .edition{display:none}.topbar .wordmark>span:last-child{display:none}.course-nav{gap:8px}.school-return{font-size:12px}.course-nav .utility{padding:10px 4px;gap:4px!important}}

/* Definition slides make the terms and their meanings the focal point. */
.stage.definitions-stage .slide{grid-template-columns:1fr;grid-template-rows:auto 1fr auto;gap:0;padding-top:28px}
.definitions-stage h1{font-size:clamp(36px,4.2vw,70px);margin:18px 0 30px}
.definitions-stage .slide-body{align-self:center;width:100%}
.definition-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:0}
.definition-card{padding:clamp(24px,3vw,48px);background:#f2f0e7;color:#18221c;border-top:4px solid #c5f26b}
.definition-card:nth-child(2){background:#c5f26b;border-top-color:#f2f0e7}
.definition-label{display:block;font:11px/1.5 'Courier New',monospace;letter-spacing:2px;color:#526054}
.definition-term{display:block;font:italic clamp(32px,4vw,60px)/1.1 Georgia,serif;letter-spacing:-1px;margin:16px 0 24px}
.definition-card dd{margin:0;max-width:28ch;font-size:clamp(22px,2.3vw,36px);line-height:1.4;letter-spacing:-.025em}
@media(max-width:900px){.stage.definitions-stage .slide{grid-template-rows:auto auto auto}.definition-pair{grid-template-columns:1fr;gap:16px}.definition-card{padding:22px 24px}.definition-term{margin:10px 0 16px}.definition-card dd{font-size:23px;max-width:none}.definitions-stage .slide-body{margin-top:0;padding-bottom:0}.definitions-stage h1{margin-bottom:24px}}

/* Tool Literacy: the layout follows the teaching task. */
.stage.learning-stage .slide{grid-template-columns:1fr;grid-template-rows:auto 1fr auto;column-gap:0;padding-top:24px}
.learning-stage h1{font-size:clamp(32px,3.5vw,58px);margin:12px 0 24px;white-space:normal;text-wrap:initial;letter-spacing:-.045em}
.learning-stage .slide-body{align-self:center;width:100%;min-width:0}
.learning-stage .why{margin-top:24px}
.learning-content{width:100%}
.learning-content h2{font-size:clamp(19px,1.55vw,26px);line-height:1.2;letter-spacing:-.025em;margin:0 0 12px;font-weight:600}
.learning-content p,.learning-content dd{font-size:clamp(16px,1.35vw,22px);line-height:1.45;margin:0;letter-spacing:-.015em}
.learning-content .learning-intro{max-width:1000px;font-size:clamp(19px,1.6vw,26px);margin-bottom:24px}
.learning-label,.tool-gallery figcaption>span{display:block;font:10px/1.5 'Courier New',monospace;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.tool-art{display:block;width:100%;height:auto;object-fit:contain}
.tool-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 22px}
.tool-gallery figure{margin:0;display:grid;grid-template-columns:1fr;min-width:0;border:1px solid var(--line);background:var(--wash)}
.tool-gallery .tool-art{height:clamp(94px,11vh,140px);background:#e8ecdf;border-radius:0}
.tool-gallery figcaption{padding:12px 16px 15px}
.tool-gallery figcaption>span{font-size:9px;margin-bottom:5px}
.tool-gallery h2{margin-bottom:4px;font-size:21px}
.tool-gallery p{font-size:15px;color:var(--muted)}
.dimension-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:0}
.dimension{padding:28px;background:#e7edda;border-top:4px solid #789d30;color:#18221c}
.dimension-1{background:#e0eaf0;border-color:#527c87}
.dimension-2{background:#f1ded4;border-color:#a43824}
.dimension dt{font:italic clamp(25px,2.7vw,42px)/1.15 Georgia,serif;margin-bottom:22px}
.dimension-number{display:block;font:11px/1.5 'Courier New',monospace;letter-spacing:2px;margin-bottom:30px;color:#526054}
.dimension dd{margin:0}
.teaching-prompt{display:flex;gap:24px;align-items:baseline;margin-top:24px;padding:18px 22px;border-left:3px solid #789d30;background:var(--wash)}
.teaching-prompt>span{flex:none;font:10px/1.5 'Courier New',monospace;letter-spacing:1.5px;color:var(--muted)}
.teaching-prompt p{font-size:clamp(17px,1.45vw,23px)}
.learning-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin:0;padding:0;list-style:none;gap:20px}
.learning-steps li{position:relative;padding:24px;border:1px solid var(--line);border-top:4px solid #789d30;background:var(--wash)}
.learning-steps li:not(:last-child)::after{content:'→';position:absolute;right:-18px;top:35%;font-size:24px;z-index:1}
.bridge-details{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:24px 0 0;padding:24px;border-top:1px solid var(--line)}
.bridge-details dt{font:italic 25px Georgia,serif;margin-bottom:12px}
.bridge-details dd{margin:0;color:var(--muted)}
.contrast-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contrast-card{padding:24px 28px;background:var(--wash);border:1px solid var(--line);display:grid;grid-template-columns:1fr 150px;column-gap:20px}
.contrast-card .tool-art{grid-column:2;grid-row:1/4;align-self:center}
.contrast-card .learning-label,.contrast-card h2,.contrast-card p{grid-column:1}
.contrast-card h2{font:italic clamp(24px,2.5vw,36px)/1.15 Georgia,serif}
.contrast-card:nth-child(2){border-top:4px solid #789d30}
.intent-change{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:28px;margin-top:28px;padding:28px;background:var(--wash)}
.intent-change p{font:italic clamp(23px,2.4vw,34px)/1.25 Georgia,serif}
.intent-change p>span{display:block;font:10px/1.5 'Courier New',monospace;letter-spacing:1.5px;color:var(--muted);margin-bottom:12px}
.example-situation{display:flex;gap:28px;align-items:center;margin-bottom:24px}
.example-situation .tool-art{width:170px;flex:none}
.example-situation blockquote{font:italic clamp(22px,2.3vw,34px)/1.25 Georgia,serif;margin:0;max-width:1000px}
.abstraction-levels,.reasoning-sheet{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.abstraction-levels li,.reasoning-sheet li{display:flex;gap:24px;align-items:baseline;padding:22px 26px;background:var(--wash);border-left:4px solid #789d30}
.abstraction-levels li:nth-child(2){margin-left:5%;border-left-color:#527c87}
.abstraction-levels li:nth-child(3){margin-left:10%;border-left-color:#a43824}
.abstraction-levels li>span,.reasoning-sheet li>span{font:12px 'Courier New',monospace;color:var(--muted)}
.abstraction-levels li:nth-child(2) p{font-family:'Courier New',monospace;font-size:clamp(14px,1.3vw,21px);overflow-wrap:anywhere}
.option-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.option-card{border:1px solid var(--line);padding:24px;background:var(--wash)}
.option-card .tool-art{height:130px;margin-bottom:24px}
.investigation-map{display:flex;align-items:center;gap:24px;margin-bottom:24px}
.investigation-map>.tool-art{width:170px;flex:none}
.investigation-map .learning-steps{flex:1}
.investigation-map .learning-steps li{padding:16px}
.investigation-map .learning-steps h2{font-size:18px}
.investigation-map .learning-steps p{font-size:16px}
.open-dimensions .dimension{padding:20px 24px;background:var(--wash);color:inherit;border:1px solid var(--line);border-top:3px solid #789d30}
.open-dimensions .dimension dt{font-size:26px;margin-bottom:14px}
.open-dimensions .dimension-number{color:var(--muted);margin-bottom:12px}
.writing-rule{display:block;border-bottom:1px dashed var(--muted);margin-top:24px}
.learning-stage .exercise{margin-top:20px;padding-bottom:0}
.reasoning-sheet{grid-template-columns:1fr 1fr}
.learning-closing .learning-steps li{padding:34px}
.learning-closing .learning-steps h2{font:italic clamp(30px,3vw,48px) Georgia,serif;color:var(--accent);margin-bottom:32px}
@media(min-width:901px) and (max-height:780px){.stage.learning-stage .slide{padding-top:16px}.learning-stage h1{margin-bottom:16px;font-size:36px}.tool-gallery{gap:12px}.tool-gallery .tool-art{height:85px}.tool-gallery figcaption{padding:8px 12px}.dimension{padding:22px}.dimension-number{margin-bottom:16px}.learning-stage .why{margin-top:18px}.example-situation .tool-art{width:130px}.teaching-prompt{margin-top:18px;padding:14px 18px}}
@media(max-width:1100px){.contrast-card{grid-template-columns:1fr}.contrast-card .tool-art{grid-column:1;grid-row:auto;max-width:150px;margin-bottom:18px}.investigation-map{align-items:flex-start}.investigation-map>.tool-art{width:120px}.investigation-map .learning-steps{grid-template-columns:1fr 1fr}.investigation-map .learning-steps li::after{display:none}}
@media(max-width:900px){.stage.learning-stage .slide{grid-template-rows:auto auto auto}.learning-stage .slide-body{margin:0;padding:0}.learning-stage h1{font-size:clamp(32px,6.5vw,48px)}.tool-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.tool-gallery .tool-art{height:110px}.dimension-grid,.option-grid,.contrast-grid,.reasoning-sheet{grid-template-columns:1fr}.dimension-number{margin-bottom:14px}.dimension dt{margin-bottom:16px}.dimension{padding:24px}.dimension dd{font-size:20px}.contrast-card .tool-art{grid-column:2;grid-row:1/4;max-width:130px}.contrast-card{grid-template-columns:1fr 130px}.contrast-card .learning-label,.contrast-card h2,.contrast-card p{grid-column:1}.learning-steps{grid-template-columns:1fr 1fr}.learning-steps li::after{display:none}.teaching-prompt{display:block;padding:18px}.teaching-prompt>span{display:block;margin-bottom:10px}.option-card .tool-art{height:150px}.bridge-details{grid-template-columns:1fr;padding:20px 0}.intent-change{gap:16px;padding:20px}.example-situation .tool-art{width:110px}.investigation-map{flex-direction:column}.investigation-map>.tool-art{width:180px;align-self:center}.investigation-map .learning-steps{width:100%}.learning-closing .learning-steps{grid-template-columns:1fr}.learning-closing .learning-steps h2{margin-bottom:16px}}
@media(max-width:480px){.tool-gallery .tool-art{height:95px}.tool-gallery figcaption{padding:12px}.tool-gallery h2{font-size:18px}.tool-gallery p{font-size:14px}.tool-gallery figcaption>span{font-size:8px;letter-spacing:1px}.learning-content .learning-intro{font-size:20px}.contrast-card{grid-template-columns:1fr;padding:22px}.contrast-card .tool-art{grid-column:1;grid-row:auto;margin-bottom:20px;max-width:170px}.contrast-card h2{font-size:28px}.learning-steps{grid-template-columns:1fr}.intent-change{grid-template-columns:1fr}.intent-change>span{transform:rotate(90deg);justify-self:center}.example-situation{align-items:flex-start;gap:16px}.example-situation .tool-art{width:86px}.example-situation blockquote{font-size:23px}.abstraction-levels li,.reasoning-sheet li{padding:18px;gap:14px}.abstraction-levels li:nth-child(n){margin-left:0}.learning-content p{font-size:18px}.learning-gallery p{font-size:14px}}

.dimension-3{background:#e4dff1;border-color:#776391}
.dimension dt{font-size:clamp(25px,2.1vw,36px)}
@media(min-width:901px) and (max-width:1200px){.dimension-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

.investigation-map .learning-steps li::after{display:none}
.open-dimensions dd:empty{min-height:60px}

/* Shared Growth Lab / by Insurity course lockup. */
.topbar .wordmark{flex-direction:column;align-items:flex-start;gap:5px;line-height:1;letter-spacing:-.04em;white-space:nowrap}.topbar .wordmark>span:last-child{display:block;margin:0;font-size:9px;font-weight:600;letter-spacing:.18em;text-transform:uppercase}