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*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.5 var(--body)}body.day{color-scheme:light;--bg:#f7f5f0;--panel:#fff;--line:#cbc4d0;--ink:#242031;--dim:#514a5b;--gold:#805321;--teal:#09696e;--pink:#9e2166;--violet:#624697;--green:#276843}button,a,input,textarea,select{font:inherit}a{color:var(--teal)}button{border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--ink);cursor:pointer;padding:8px 12px;font-size:14px;font-weight:600;line-height:1.3}button:hover,a:hover{filter:brightness(1.15)}button:disabled{opacity:.4;cursor:default}button.primary{border-color:var(--gold);color:var(--gold)}button.active{border-color:var(--teal);background:color-mix(in srgb,var(--teal) 12%,var(--panel))}:focus-visible{outline:3px solid var(--pink);outline-offset:3px}[hidden]{display:none!important}.skip{position:absolute;top:-80px;z-index:100;background:var(--panel);padding:10px}.skip:focus{top:8px}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--display)}h1{font-size:34px;line-height:1.15;letter-spacing:-.025em}h2{font-size:23px;line-height:1.3}h3{font-size:18px;line-height:1.35}.small,.source-line,.caption{font-size:13px;color:var(--dim);line-height:1.45}.ey{font-size:12px;letter-spacing:.11em;text-transform:uppercase;font-weight:700;color:var(--teal)}
#app{height:100dvh;min-height:600px;max-width:1680px;margin:auto;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:radial-gradient(ellipse at 90% 0%,#f0189a0d,transparent 50%),var(--bg)}.topbar{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:10px 24px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font:700 20px var(--display);color:var(--gold);white-space:nowrap}.brand small{display:block;font:11px var(--body);letter-spacing:.06em;color:var(--dim)}.topnav{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.topnav a{font-size:13px;text-decoration:none;border:1px solid var(--line);padding:8px 10px;border-radius:9px}.chapter-main{display:flex;flex-direction:column;min-height:0;padding:15px 32px 10px;gap:12px}.heading{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.heading .ey{margin-bottom:6px}.counter{font-variant-numeric:tabular-nums;color:var(--dim);font-size:13px;white-space:nowrap}.takeaway{font-size:21px;line-height:1.35;font-weight:600;color:var(--gold);max-width:1000px}.body-grid{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:center}.body-grid>div{min-width:0}.visual{display:flex;flex-direction:column;gap:8px;min-height:0;justify-content:center}.figure-button{display:block;padding:12px;background:#fff;border:1px solid var(--gold);border-radius:13px;width:100%;cursor:zoom-in;line-height:0}.figure-button img{width:100%;max-height:310px;object-fit:contain}.caption{font-size:12px;text-align:center}.meaning{border:1px solid var(--line);border-top:3px solid var(--teal);background:var(--panel);border-radius:13px;padding:18px 21px}.meaning h2{font:700 12px var(--body);letter-spacing:.13em;color:var(--teal);margin-bottom:12px}.points{margin:0;padding-left:21px;display:flex;flex-direction:column;gap:12px;font-size:20px;line-height:1.42}.points strong{color:var(--gold)}.points p{display:inline}.concepts{display:grid;gap:10px}.concept{border:1px solid var(--teal);border-radius:12px;padding:15px 19px;background:var(--panel)}.concept b{display:block;font-size:21px;color:var(--teal)}.concept span{font-size:17px;color:var(--dim)}.concepts.flow .concept+.concept:before{content:'↓';display:block;text-align:center;color:var(--gold);margin-top:-16px}.table-main{border-collapse:separate;border-spacing:0;width:100%;font-size:17px;line-height:1.37;border:1px solid var(--line);border-radius:12px;overflow:hidden}.table-main th,.table-main td{padding:10px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.table-main th{color:var(--teal);background:var(--panel)}.table-main tr:last-child>*{border-bottom:0}.table-main th:first-child{width:31%}.table-main th{font-weight:600}.full-table .body-grid{grid-template-columns:1fr}.full-table .table-main{max-width:1150px;margin:auto;font-size:18px}.full-table .meaning{display:none}.two-approaches{display:grid;grid-template-columns:1fr 1fr;gap:18px}.approach{padding:18px;border:1px solid var(--teal);border-radius:13px;background:var(--panel)}.approach h3,.approach h2{color:var(--teal);margin-bottom:12px}.approach p{font-size:19px}.arrow-chain{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0;font-size:16px;color:var(--gold)}.arrow-chain span+span:before{content:'→ ';color:var(--teal)}
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.station{flex:1;min-height:0;display:flex;flex-direction:column;gap:13px}.station-top{display:flex;justify-content:space-between;gap:16px}.station-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.station-steps div{padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:10px;font-size:16px;line-height:1.4}.station-steps b{display:block;color:var(--teal);font-size:12px;letter-spacing:.06em;margin-bottom:4px}.timer{white-space:nowrap;border:1px solid var(--gold);border-radius:10px;padding:9px 12px;display:flex;align-items:center;gap:10px}.timer-output{font-size:25px;color:var(--gold);font-variant-numeric:tabular-nums}.timer.over{border-color:var(--pink)}.timer.over .timer-output{color:var(--pink)}.station-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px;margin:8px 0;font-size:14px}.field span{font-weight:700;letter-spacing:.04em;color:var(--teal);font-size:12px}.field textarea,.field input,.field select{width:100%;min-height:64px;resize:vertical;max-height:150px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:10px;font-size:16px;line-height:1.5}.hint-box{padding:11px 15px;border-left:3px solid var(--violet);background:var(--panel);font-size:16px;color:var(--dim)}.hint-box b{color:var(--violet)}.station .scope-note{margin-top:0}.station-fields .field textarea{height:72px;resize:none}.station .hint-box{font-size:15px}.station .actions{margin-top:auto}
.modal{position:fixed;inset:0;z-index:20;background:#000b;display:grid;place-items:center;padding:20px}.dialog{background:var(--bg);border:1px solid var(--line);border-radius:16px;max-width:1100px;width:100%;max-height:92dvh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 15px 70px #0008}.dialog header{padding:16px 22px;display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid var(--line)}.dialog header h2{font-size:23px}.modal-body{overflow:auto;padding:23px;font-size:18px;line-height:1.65;min-height:0}.modal-body p{margin:0 0 15px}.modal-body h3{margin:20px 0 10px;color:var(--gold)}.modal-body table{border-collapse:collapse;width:100%;margin:15px 0;font-size:16px}.modal-body th,.modal-body td{padding:10px;border:1px solid var(--line);text-align:left;vertical-align:top}.modal-body th{color:var(--teal)}.modal-body .source-original{display:grid;justify-items:center;gap:14px}.modal-body img.zoom-figure{display:block;width:auto;max-width:100%;height:auto;max-height:70dvh;object-fit:contain;background:white;image-rendering:auto}.modal-body img.source-natural{box-shadow:0 8px 28px #0006;border:1px solid var(--line)}.modal-body .field textarea{max-height:400px;min-height:90px}.modal-body a{overflow-wrap:anywhere}.callout{padding:15px 18px;border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:8px;background:var(--panel);margin-bottom:18px;font-size:16px}.warning{border-left-color:var(--pink)}.index-grid,.tool-grid,.rule-grid,.two-col{display:grid;grid-template-columns:1fr 1fr;gap:13px}.index-grid button{text-align:left;min-height:63px;display:flex;gap:15px;font-size:16px}.index-grid b{color:var(--gold)}.rule-card{padding:16px;border:1px solid var(--line);border-radius:10px}.rule-card h3{margin:0 0 10px;font-size:17px}.rule-card h3 b{color:var(--teal);margin-right:8px}.rule-card p{font-size:14px;line-height:1.5}.rule-card button{font-size:12px}.tool-grid button{padding:18px;text-align:left;font-size:16px}.quiz-options{display:grid;gap:10px}.quiz-options label{border:1px solid var(--line);border-radius:9px;padding:12px;display:flex;gap:13px;align-items:baseline}.quiz-options input{accent-color:var(--teal)}.feedback{margin-top:16px;border-left:3px solid var(--teal);padding:12px 17px;background:var(--panel)}.feedback.wrong{border-color:var(--pink)}.quiz-dots{display:flex;gap:8px;margin-bottom:18px}.ai-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.ai-row button[aria-pressed=true]{border-color:var(--pink);color:var(--pink)}.result{margin:15px 0;padding:15px;border:1px solid var(--gold);border-radius:10px}.status{font-size:12px;color:var(--dim)}.print-note{display:none}body.reading #app{height:auto;min-height:100dvh}body.reading .chapter-main{min-height:650px;padding-bottom:25px}body.reading .body-grid{min-height:300px}body.reading .footerbar{position:sticky;bottom:0;z-index:3}
@media(min-width:1700px){.chapter-main{padding:26px 40px 18px}.body-grid{gap:38px}.points{font-size:24px;gap:18px}.takeaway{font-size:25px}h1{font-size:42px}.figure-button img{max-height:420px}.table-main{font-size:21px}.station-steps div{font-size:21px}.station-fields textarea{height:125px!important;font-size:20px}.question-text{font-size:20px}}
@media(max-height:780px) and (min-width:1001px){.chapter-main{gap:8px;padding-top:10px}h1{font-size:30px}.heading .ey{margin-bottom:4px}.takeaway{font-size:18px}.figure-button img{max-height:245px}.points{font-size:18px;gap:8px}.meaning{padding:14px 18px}.table-main{font-size:15px}.table-main th,.table-main td{padding:7px 10px}.full-table .table-main{font-size:16px}.question-text{font-size:15px}.chapter-map ol{font-size:17px;gap:8px}.map-section{font-size:15px}.hero img{max-height:290px}.hero p{font-size:19px}.station-steps div{font-size:14px;padding:9px}.station{gap:8px}.station-fields .field textarea{height:60px;min-height:55px;font-size:15px}.station .hint-box{font-size:13px}.station-top h2{font-size:19px}}
@media(max-width:1000px){body{font-size:17px}#app{height:auto;min-height:100dvh}.topbar{padding:13px 16px;align-items:flex-start;flex-direction:column}.topnav{gap:6px}.topnav button,.topnav a{font-size:12px;padding:8px}.chapter-main{padding:19px 17px 22px;gap:17px;min-height:650px}h1{font-size:28px}.heading{gap:10px}.takeaway{font-size:20px}.body-grid,.hero,.chapter-map{grid-template-columns:1fr;gap:21px;flex:none}.points{font-size:19px;gap:12px}.meaning{padding:18px}.figure-button img{max-height:360px}.hero h2{font-size:42px}.hero p{font-size:20px}.hero img{max-height:250px}.table-main,.full-table .table-main{font-size:16px}.table-main td,.table-main th{padding:9px}.full-table .meaning{display:block}.question{margin-top:10px}.question .actions{align-items:flex-start}.source-line{max-width:none}.footerbar{position:sticky;bottom:0;padding:9px 12px;z-index:3;flex-wrap:wrap;gap:8px}.footer-left{flex-wrap:wrap}.footer-right{margin-left:auto}.footerbar button{font-size:12px;padding:7px 9px}.footerbar .progress{display:none}.footerbar #notesBtn,.footerbar #themeBtn{display:none}.station-top{flex-direction:column}.station-steps,.station-fields,.two-col,.two-approaches{grid-template-columns:1fr}.station-fields .field textarea{height:100px}.station-steps div{font-size:16px}.station .hint-box{font-size:16px}.station .actions{margin-top:10px}.timer{width:fit-content}.index-grid,.rule-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}.modal{padding:8px}.dialog{max-height:96dvh}.dialog header{padding:14px}.modal-body{padding:16px;font-size:17px}.dialog header h2{font-size:20px}.chapter-map ol{font-size:18px}.case-box p{font-size:20px}.ai-row{grid-template-columns:1fr auto auto;font-size:15px}.modal-body .table-overflow{overflow:auto}.full-table .body-grid{display:block}.caption{font-size:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{body{background:white!important;color:black!important}.topbar,.footerbar,.modal,.actions,.skip{display:none!important}#app,.chapter-main{display:block;height:auto!important;min-height:0!important;background:white!important}.print-note{display:block}.meaning,.concept,.table-main{background:white!important;color:black!important}.body-grid{display:grid}.points{font-size:12pt}.takeaway,h1,strong{color:black!important}}

/* Navigation hints do not scale or hide lesson content. */
.nav-shortcuts{display:block;font-size:11px;line-height:1.3;white-space:nowrap;color:var(--teal)}

/* Mind-map and student roadmap: real text, no image-based type scaling. */
.topnav .map-shortcut{border-color:var(--gold);color:var(--gold)}
#topic-location{display:block;color:var(--teal);font-size:13px;font-weight:600;line-height:1.35;max-width:370px}
.footer-left{min-width:0}.footer-right{flex-shrink:0}
.mindmap-page{gap:10px}.mindmap-page .heading h1{font-size:30px}
.mindmap-board{position:relative;display:grid;grid-template-columns:31% 25.2% 31%;column-gap:6.4%;grid-template-rows:repeat(3,minmax(72px,1fr));row-gap:10px;flex:1;min-height:245px;max-height:340px}
.mind-wires{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.mind-wires path{fill:none;stroke:var(--teal);stroke-width:2;opacity:.6;vector-effect:non-scaling-stroke}
.mind-centre{grid-area:1/2/4/3;align-self:center;display:flex;flex-direction:column;gap:13px;text-align:center;background:var(--panel);border:2px solid var(--gold);border-radius:22px;padding:22px 14px;position:relative;z-index:1}
.mind-centre h2{font-size:24px;line-height:1.22;color:var(--gold);text-wrap:balance}
.mind-kicker{font-size:11px;letter-spacing:.07em;color:var(--dim);font-weight:700}
.mind-chapter{font-size:14px;line-height:1.35;color:var(--dim)}
.mind-branch{position:relative;z-index:1;display:flex;flex-direction:column;justify-content:center;gap:5px;text-align:left;padding:12px 16px;border:1px solid var(--teal);border-left:4px solid var(--teal);border-radius:13px;min-width:0;background:var(--panel);font-weight:400;transition:border-color .15s}
.mind-branch:hover{border-color:var(--gold);filter:none;box-shadow:0 0 0 1px var(--gold)}
.mind-branch strong{font-size:20px;line-height:1.2;color:var(--ink);font-family:var(--display);font-weight:600}
.mind-verb{font-size:12px;line-height:1.25;color:var(--teal);font-weight:700}
.mind-detail{font-size:15px;line-height:1.3;color:var(--dim)}
.branch-1{grid-area:1/1/2/2}.branch-2{grid-area:3/1/4/2}.branch-3{grid-area:1/3/2/4}.branch-4{grid-area:2/3/3/4}.branch-5{grid-area:3/3/4/4}
.mind-link{font-size:15px;line-height:1.4;color:var(--dim);padding:8px 12px;border-left:3px solid var(--teal);background:var(--panel)}
.mind-link b{font-size:11px;letter-spacing:.04em;color:var(--teal);margin-right:7px}
.student-roadmap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.road-stage{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:12px 14px;min-width:0}
.road-stage h3{font-size:18px;line-height:1.2;margin-bottom:8px;color:var(--gold)}.road-stage h3 span{font-size:12px;color:var(--teal);margin-right:7px}
.road-stage p{font-size:14px;line-height:1.4;margin:3px 0}.road-stage p b{color:var(--teal);font-size:13px}
.road-stage .road-result{font-size:12px;line-height:1.35;color:var(--dim);margin-top:6px}
.map-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px}
.map-bottom>p{font-size:12px;line-height:1.4;color:var(--dim);max-width:680px}.map-bottom>p b{color:var(--pink)}
.map-bottom .actions{flex-wrap:nowrap;flex-shrink:0}.map-bottom button{font-size:13px;padding:8px 11px}
.objective-list{display:grid;gap:14px;padding-left:27px}.objective-list li{padding-left:5px}
.study-groups{display:grid;gap:19px}.study-groups h3{margin:0 0 10px}.study-groups .small{margin:12px 0 0}
.tool-link{padding:18px;border:1px solid var(--line);border-radius:9px;text-decoration:none;font-size:16px;font-weight:600}
.tool-details{margin-top:15px;border-top:1px solid var(--line);padding-top:12px}.tool-details summary{cursor:pointer;font-size:16px;color:var(--dim)}.tool-details .tool-grid{margin-top:15px}
@media(min-width:1700px){.mindmap-board{max-height:420px}.mindmap-page .heading h1{font-size:38px}.mind-branch strong{font-size:25px}.mind-detail{font-size:19px}.mind-verb{font-size:15px}.mind-centre h2{font-size:30px}.mind-link{font-size:19px}.road-stage h3{font-size:23px}.road-stage p{font-size:18px}.road-stage p b{font-size:16px}.road-stage .road-result{font-size:15px}.map-bottom>p{font-size:15px}}
@media(max-height:800px) and (min-width:1001px){.mindmap-page{gap:8px}.mindmap-page .heading h1{font-size:27px}.mindmap-board{min-height:235px;max-height:290px;row-gap:9px}.mind-branch{padding:9px 12px;gap:4px}.mind-branch strong{font-size:18px}.mind-verb{font-size:11px}.mind-detail{font-size:14px}.mind-centre{padding:17px 13px;gap:11px}.mind-centre h2{font-size:21px}.mind-link{font-size:14px;padding:6px 10px}.road-stage{padding:9px 12px}.road-stage h3{font-size:16px;margin-bottom:6px}.road-stage p{font-size:13px}.road-stage p b{font-size:12px}.road-stage .road-result{font-size:11px}.map-bottom>p{font-size:11px}}
@media(max-width:1000px){.topbar{flex-direction:row;align-items:center;gap:12px;flex-wrap:wrap}.topnav{flex-wrap:wrap}#topic-location{font-size:12px;max-width:220px}.mindmap-page .heading h1{font-size:27px}.mindmap-board{display:flex;flex-direction:column;min-height:0;max-height:none;gap:13px;margin:0 0 5px;padding-left:18px;border-left:2px solid var(--teal)}.mind-wires{display:none}.mind-centre{align-self:stretch;padding:21px 18px;margin-left:-18px;order:0}.mind-centre h2{font-size:24px}.mind-branch{min-height:100px;padding:15px;gap:7px}.mind-branch:before{content:'';position:absolute;left:-20px;width:17px;top:50%;height:2px;background:var(--teal)}.mind-branch strong{font-size:21px}.mind-detail{font-size:17px}.mind-verb{font-size:13px}.mind-link{font-size:16px;padding:13px}.mind-link b{display:block;font-size:12px;margin-bottom:5px}.student-roadmap{grid-template-columns:1fr;gap:12px}.road-stage{padding:17px}.road-stage h3{font-size:20px}.road-stage p{font-size:16px}.road-stage p b{font-size:14px}.road-stage .road-result{font-size:14px}.map-bottom{align-items:stretch;flex-direction:column;gap:12px}.map-bottom>p{font-size:14px}.map-bottom .actions{justify-content:space-between}.map-bottom button{font-size:15px}.footerbar{gap:8px}.footer-left{flex-wrap:wrap}.footer-right{flex-wrap:wrap}.progress{min-width:100px}.study-groups .tool-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.mind-branch{transition:none}}
@media print{.mind-wires{display:none}.mindmap-board{height:auto;max-height:none;break-inside:avoid}.student-roadmap{break-inside:avoid}.map-bottom .actions{display:none}}

/* Story v2: student-first concept path, persistent case thread, explicit opening story and ending. */
.mindmap-page{gap:9px}
.map-question{border:1px solid var(--gold);background:linear-gradient(100deg,var(--panel),rgba(214,166,94,.07));border-radius:15px;padding:13px 18px;display:grid;grid-template-columns:auto 1fr auto;gap:13px;align-items:center}
.map-question>span{font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--gold)}
.map-question h2{font-size:23px;line-height:1.2;margin:0;color:var(--ink);text-wrap:balance}
.map-question p{font-size:13px;color:var(--dim);margin:0;text-align:right;max-width:300px}
.concept-path{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;position:relative}
.map-step{position:relative;display:flex;flex-direction:column;text-align:left;gap:5px;border:1px solid var(--line);border-top:3px solid var(--teal);background:var(--panel);border-radius:12px;padding:11px 12px;min-height:154px;min-width:0;font-weight:400}
.map-step:not(:last-child)::after{content:'›';position:absolute;right:-14px;top:50%;transform:translateY(-50%);font-size:28px;color:var(--gold);z-index:2}
.map-step:hover,.map-step:focus-visible{border-color:var(--gold);border-top-color:var(--gold)}
.step-number{position:absolute;right:9px;top:7px;width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:rgba(82,205,211,.10);color:var(--teal);font-weight:800;font-size:12px}
.step-verb{font-size:11px;line-height:1.2;color:var(--teal);text-transform:uppercase;letter-spacing:.05em;font-weight:800;padding-right:28px}
.map-step strong{font-size:17px;line-height:1.18;color:var(--ink);font-family:var(--display);font-weight:650}
.step-detail{font-size:12.5px;line-height:1.28;color:var(--dim)}
.step-case{margin-top:auto;padding-top:7px;border-top:1px solid var(--line);font-size:12px;line-height:1.28;color:#ddd}
.step-case i{display:block;font-style:normal;color:var(--gold);font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px}
.mind-link{margin:0;font-size:14px;line-height:1.35;padding:7px 11px}
.student-roadmap{gap:9px}.road-stage{padding:9px 12px}.road-stage h3{font-size:16px;margin-bottom:5px}.road-stage p{font-size:12.5px;line-height:1.3}.road-stage p b{font-size:12px}.road-stage .road-result{font-size:11px}
.map-bottom{min-height:36px}.map-bottom>p{margin:0}.map-bottom .actions{margin:0}

/* Story slide */
.story-page{gap:12px}
.story-head{border-left:4px solid var(--pink);background:var(--panel);border-radius:0 15px 15px 0;padding:15px 20px}
.story-head span{font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--pink)}
.story-head h2{font-size:30px;line-height:1.15;margin:5px 0 4px;color:var(--ink)}
.story-head p{margin:0;color:var(--dim);font-size:15px}
.story-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:13px}
.story-grid section{border:1px solid var(--line);border-radius:13px;background:var(--panel);padding:16px 18px}
.story-grid h3{font-size:15px;color:var(--gold);margin:0 0 9px}.story-grid p{font-size:17px;line-height:1.48;margin:0}
.story-route{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.story-route span{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:9px;padding:8px 9px;background:var(--panel);font-size:12px;line-height:1.2}
.story-route b{display:grid;place-items:center;flex:0 0 23px;height:23px;border-radius:50%;background:rgba(82,205,211,.12);color:var(--teal)}
.story-note{font-size:14px;line-height:1.4;border-left:3px solid var(--teal);padding:9px 13px;background:var(--panel);color:var(--dim)}
.story-note b{color:var(--teal)}
.story-action{justify-content:flex-end;margin-top:auto}

/* Persistent story link on content slides */
.case-thread{display:grid;grid-template-columns:auto auto 1fr;gap:8px 12px;align-items:center;padding:7px 11px;border:1px solid rgba(82,205,211,.3);border-radius:9px;background:rgba(82,205,211,.045);font-size:12px;line-height:1.3}
.case-thread>span{font-size:10px;font-weight:900;letter-spacing:.07em;color:var(--teal)}
.case-thread>b{color:var(--ink);font-size:12px}
.case-thread>em{font-style:normal;color:var(--dim);min-width:0}
.question-text b{color:var(--pink)}

/* Explicit ending, visually paired with the opening cover */
.end-page{gap:10px}
.end-hero{display:grid;grid-template-columns:1.45fr .55fr;gap:35px;align-items:center;flex:1;border:1px solid var(--line);border-radius:18px;background:radial-gradient(700px 350px at 20% 20%,rgba(214,166,94,.08),transparent 65%),var(--panel);padding:28px 34px}
.end-copy>h2{font-size:48px;line-height:1.03;margin:6px 0 12px;color:var(--ink)}
.end-success{font-size:18px;line-height:1.45;color:var(--dim);margin:0 0 18px}.end-success b{color:var(--gold)}
.end-required{display:grid;gap:8px}
.end-required section{display:grid;grid-template-columns:34px 1fr;gap:11px;align-items:start;border:1px solid var(--line);border-radius:10px;padding:9px 11px;background:rgba(0,0,0,.09)}
.end-required section>span{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:rgba(82,205,211,.12);color:var(--teal);font-weight:800}
.end-required b{font-size:14px;color:var(--ink)}.end-required p{font-size:12.5px;line-height:1.35;color:var(--dim);margin:2px 0 0}
.end-boundary{font-size:12px;color:var(--dim);margin:12px 0}.end-hero>img{width:100%;max-height:330px;object-fit:contain}
.end-hero .actions{margin-top:12px}

@media(max-height:780px) and (min-width:1001px){
 .map-question{padding:9px 14px}.map-question h2{font-size:20px}.concept-path{gap:13px}.map-step{min-height:132px;padding:8px 10px}.map-step strong{font-size:15px}.step-detail{font-size:11.5px}.step-case{font-size:11px}.road-stage{padding:7px 9px}.road-stage h3{font-size:14px}.road-stage p{font-size:11px}.road-stage .road-result{font-size:10px}
 .story-head{padding:10px 15px}.story-head h2{font-size:25px}.story-grid section{padding:11px 13px}.story-grid p{font-size:14px}.story-route span{font-size:10px;padding:6px}.story-note{font-size:12px;padding:7px 10px}
 .end-hero{padding:18px 25px}.end-copy>h2{font-size:39px}.end-success{font-size:15px}.end-required section{padding:6px 9px}.end-required p{font-size:11px}
}
@media(max-width:1000px){
 .map-question{grid-template-columns:1fr;text-align:left}.map-question p{text-align:left;max-width:none}
 .concept-path{grid-template-columns:1fr;gap:10px;padding-left:16px;border-left:2px solid var(--teal)}
 .map-step{min-height:0;padding:14px 15px}.map-step:not(:last-child)::after{content:'';left:-18px;right:auto;top:50%;width:16px;height:2px;background:var(--teal)}
 .step-case{font-size:14px}.step-detail{font-size:14px}.map-step strong{font-size:19px}
 .story-grid{grid-template-columns:1fr}.story-route{grid-template-columns:1fr}.story-route span{font-size:14px}.story-grid p{font-size:17px}
 .case-thread{grid-template-columns:1fr;gap:3px}.case-thread>span{font-size:10px}.case-thread>b,.case-thread>em{font-size:13px}
 .end-hero{grid-template-columns:1fr;padding:22px}.end-copy>h2{font-size:38px}.end-hero>img{max-height:220px;order:-1}.end-required p{font-size:14px}
}
@media print{.map-step:not(:last-child)::after{display:none}.case-thread{border-color:#aaa}.end-hero{display:block}.end-hero>img{max-width:220px}}

/* AI lens (20260924-ailens-v1): optional; appears only when a chapter supplies lens fields */
.ai-lens{display:grid;grid-template-columns:auto 1fr;gap:8px 12px;align-items:start;padding:7px 11px;border:1px solid rgba(182,163,255,.38);border-radius:9px;background:rgba(182,163,255,.06);font-size:13px;line-height:1.38}
.ai-lens>span{font-size:10px;font-weight:900;letter-spacing:.07em;color:var(--violet);padding-top:2px;white-space:nowrap}
.ai-lens>em{font-style:normal;color:var(--ink);min-width:0}
.story-lens{border-left:3px solid var(--violet);padding:9px 13px;background:var(--panel);font-size:14px;line-height:1.42;color:var(--ink)}
.story-lens b{display:block;color:var(--violet);font-size:11px;font-weight:800;letter-spacing:.08em;margin-bottom:3px}
.step-lens{display:block;font-size:12px;line-height:1.3;color:var(--violet);margin-top:5px}
.obj-lens{display:block;color:var(--violet);font-size:13px;margin-top:3px}
@media print{.ai-lens,.story-lens{border-color:#6556C4;background:#fff;color:#000}.ai-lens>span,.story-lens b,.step-lens,.obj-lens{color:#4b3fa0}}

/* Optional section banner (course-added AI segment) */
.ai-banner{position:relative;margin:0;height:104px;border-radius:12px;overflow:hidden;border:1px solid rgba(182,163,255,.45);box-shadow:0 0 28px rgba(255,128,203,.12)}
.ai-banner img{width:100%;height:100%;object-fit:cover;object-position:center 47%;display:block}
.ai-banner figcaption{position:absolute;left:0;top:0;bottom:0;max-width:56%;display:flex;flex-direction:column;justify-content:center;gap:3px;padding:10px 16px;background:linear-gradient(90deg,rgba(8,7,12,.92) 0%,rgba(8,7,12,.78) 70%,rgba(8,7,12,0) 100%);font-size:13.5px;line-height:1.35;color:#f6f3ff}
.ai-banner figcaption span{font-size:11px;font-weight:900;letter-spacing:.08em;color:#d6c8ff}
@media(max-width:1000px){.ai-banner{height:auto}.ai-banner img{height:120px}.ai-banner figcaption{position:static;max-width:none;background:var(--panel);color:var(--ink)}.ai-banner figcaption span{color:var(--violet)}}
@media print{.ai-banner{box-shadow:none}}

/* Optional slide skin: GenAI. Applies only to slides that set skin:"genai", only in night mode.
   The iSCARB top bar, footer and all other slides keep the course identity. */
body:not(.day) .chapter-main.skin-genai{--bg:#050b1c;--panel:rgba(11,22,50,.86);--line:#23426f;--ink:#eef4ff;--dim:#a9b9d8;--gold:#8fe1ff;--teal:#4fe3ff;--pink:#ff4fd8;--violet:#b690ff;
 position:relative;isolation:isolate;color:var(--ink);background:
 radial-gradient(ellipse at 6% 8%,rgba(255,79,216,.16),transparent 40%),
 radial-gradient(ellipse at 96% 92%,rgba(79,227,255,.13),transparent 44%),
 radial-gradient(circle at 20px 30px,rgba(143,225,255,.38) 1px,transparent 1.6px) 0 0/140px 120px,
 radial-gradient(circle at 90px 80px,rgba(255,79,216,.34) 1.2px,transparent 2px) 0 0/190px 170px,
 #050b1c}
body:not(.day) .chapter-main.skin-genai::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:url(../assets/v3/genai-banner.jpg) left center/cover no-repeat;opacity:.09;-webkit-mask-image:linear-gradient(90deg,#000 0,transparent 48%);mask-image:linear-gradient(90deg,#000 0,transparent 48%)}
body:not(.day) .chapter-main.skin-genai .heading h1{text-shadow:0 0 22px rgba(79,227,255,.30)}
body:not(.day) .chapter-main.skin-genai .takeaway{text-shadow:0 0 14px rgba(143,225,255,.28)}
body:not(.day) .chapter-main.skin-genai .meaning,body:not(.day) .chapter-main.skin-genai .table-main{box-shadow:0 0 0 1px rgba(79,227,255,.07),0 12px 30px rgba(0,0,0,.35),0 0 26px rgba(79,227,255,.05)}
body:not(.day) .chapter-main.skin-genai .meaning{background:linear-gradient(180deg,rgba(79,227,255,.07),rgba(11,22,50,.86) 40%)}
body:not(.day) .chapter-main.skin-genai .case-thread{border-color:rgba(79,227,255,.35);background:rgba(79,227,255,.06)}
body:not(.day) .chapter-main.skin-genai .ai-banner{border-color:rgba(255,79,216,.45)}
@media(prefers-reduced-motion:no-preference){body:not(.day) .chapter-main.skin-genai{animation:genaiDrift 60s linear infinite}}
@keyframes genaiDrift{from{background-position:0 0,0 0,0 0,0 0,0 0}to{background-position:0 0,0 0,140px 120px,-190px 170px,0 0}}
@media print{.chapter-main.skin-genai::before{display:none}}

/* Small AI marker for prompts that involve the AI component (keeps slide identity) */
.ai-tag{display:inline-block;font-style:normal;font-size:10px;font-weight:900;letter-spacing:.08em;line-height:1;padding:3px 7px;margin-left:8px;border-radius:999px;vertical-align:middle;color:#050b1c;background:linear-gradient(90deg,#4fe3ff,#ff4fd8);box-shadow:0 0 10px rgba(255,79,216,.25)}
.takeaway .ai-tag{font-size:11px;position:relative;top:-2px}
@media print{.ai-tag{box-shadow:none;background:#ddd;color:#000}}

/* Optional instructor disclosure on the closing slide */
.end-disclosure{margin:2px 0 0;font-size:12.5px;line-height:1.35;color:var(--dim);border-left:3px solid var(--violet);padding:1px 0 1px 10px}
.end-disclosure b{color:var(--ink)}
/* ===== GenAI edition v11: hook, tool tiles, AI challenge ===== */
.hero-hook{display:flex;gap:10px;align-items:flex-start;margin:14px 0 6px!important;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,79,216,.45);background:linear-gradient(100deg,rgba(79,227,255,.10),rgba(255,79,216,.10));font-size:clamp(17px,1.6vw,21px)!important;font-weight:600;line-height:1.35;color:var(--ink);max-width:640px}
.hero-hook .ai-tag{margin:3px 0 0;flex:none}
.ai-cta{border-color:rgba(255,79,216,.6)!important;background:linear-gradient(90deg,rgba(79,227,255,.16),rgba(255,79,216,.16))!important}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.tile{display:flex;gap:12px;align-items:center;text-align:left;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);text-decoration:none;cursor:pointer;transition:border-color .15s,transform .15s}
.tile:hover{border-color:var(--teal);transform:translateY(-1px)}
.tile .ti{flex:none;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:rgba(113,213,216,.12);color:var(--teal)}
.tile .ti svg{width:22px;height:22px}
.tile .tt{display:flex;flex-direction:column;gap:2px;min-width:0}
.tile .tt b{font-size:15.5px}.tile .tt small{font-size:12.5px;color:var(--dim);line-height:1.3}
.grp-req .tile .ti{background:rgba(221,178,126,.14);color:var(--gold)}
.grp-src .tile .ti{background:rgba(182,163,255,.14);color:var(--violet)}
.tile-req{border-color:rgba(221,178,126,.55)}
.grp h3{display:flex;align-items:center;gap:9px}
.grp h3 span{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:12px;background:var(--line);color:var(--ink)}
.tile-feature{width:100%;margin:0 0 16px;padding:16px 18px;border-color:rgba(255,79,216,.55);background:linear-gradient(100deg,rgba(79,227,255,.12),rgba(255,79,216,.12)),var(--panel)}
.tile-feature .ti{width:46px;height:46px;background:linear-gradient(135deg,#4fe3ff,#ff4fd8);color:#050b1c}
.tile-feature .tt em{font-style:normal;font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--pink);text-transform:uppercase}
.tile-feature .tt b{font-size:18px}.tile-feature .go{margin-left:auto;font-weight:700;color:var(--teal);white-space:nowrap}
.aix-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}.aix-head b{font-size:19px}
.aix-badge{font-size:12px;color:var(--dim);border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.aix-case{border:1px solid rgba(79,227,255,.35);border-radius:12px;padding:12px 16px;background:rgba(79,227,255,.05);margin-bottom:12px}
.aix-case h3{margin:0 0 6px}.aix-case ul{margin:6px 0}.aix-q{margin:8px 0 0}
.aix-steps{display:flex;gap:6px;list-style:none;padding:0;margin:0 0 12px;counter-reset:s;flex-wrap:wrap}
.aix-steps li{counter-increment:s;padding:5px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--dim)}
.aix-steps li::before{content:counter(s) " · "}
.aix-steps li.on{border-color:var(--teal);color:var(--teal)}.aix-steps li.done{border-color:var(--green,#83d7a8);color:var(--green,#83d7a8)}
.field.locked textarea{opacity:.7}
.aix-stress{border:2px solid #ff8a7a;background:rgba(255,138,122,.08);border-radius:12px;padding:10px 16px;margin:12px 0}
.aix-stress h3{margin:0 0 4px;color:#ff8a7a}
.aix-verdict{display:flex;gap:8px;margin:8px 0 12px}
.aix-verdict button[aria-pressed="true"]{border-color:var(--teal);background:rgba(113,213,216,.16)}
@media print{.tile-feature,.hero-hook{background:#fff}}

/* CS2023 alignment table */
.align td:first-child{white-space:nowrap}.align small{color:var(--dim)}

/* NELC national-alignment layer · presentation/UX only */
.nelc-shortcut,.nelc-chip,.nelc-action{border-color:rgba(85,220,174,.58)!important}.nelc-shortcut{background:linear-gradient(135deg,rgba(85,220,174,.10),rgba(154,130,255,.08))!important}.nelc-chip{display:inline-flex;align-items:center;gap:7px;align-self:center;white-space:nowrap;padding:6px 9px;min-height:34px;border-radius:999px;font-size:.78rem;font-weight:800;color:var(--ink);background:rgba(85,220,174,.07)}.nelc-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#23b97c 0 50%,#7d3fb2 50%);box-shadow:0 0 0 3px rgba(85,220,174,.08)}
.readiness-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:7px 0 9px}.readiness-strip section{padding:9px 10px;border:1px solid rgba(85,220,174,.32);border-radius:12px;background:linear-gradient(135deg,rgba(85,220,174,.055),rgba(154,130,255,.035))}.readiness-strip b{display:block;color:var(--teal);font-size:.92rem;margin-bottom:3px}.readiness-strip span{font-size:.82rem;line-height:1.28;color:var(--dim)}
.nelc-reference{display:grid;grid-template-columns:92px 1fr;gap:18px;align-items:center;margin-bottom:16px;padding:16px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(135deg,rgba(85,220,174,.08),rgba(154,130,255,.07))}.nelc-reference h3{margin:.2rem 0;font-size:1.35rem}.nelc-reference p{margin:.2rem 0}.nelc-wordmark{width:82px;height:82px;border-radius:24px;display:grid;place-items:center;background:conic-gradient(from 45deg,#2dbb79 0 25%,#25b9df 0 50%,#61318f 0 75%,#a84bc5 0);box-shadow:inset 0 0 0 7px rgba(255,255,255,.86)}.nelc-wordmark span{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;background:var(--panel);color:var(--ink);font-weight:950;font-size:.8rem;letter-spacing:.08em}
.nelc-principles{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:10px 0 18px}.nelc-principles article,.nelc-stages article{border:1px solid var(--line);border-radius:12px;padding:11px;background:var(--panel2)}.nelc-principles b,.nelc-stages b{display:block;color:var(--gold);font-size:.88rem;margin-bottom:5px}.nelc-principles span,.nelc-stages span{font-size:.82rem;line-height:1.35;color:var(--muted)}.nelc-stages{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0 18px}.nelc-stages i{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:rgba(85,220,174,.12);color:var(--teal);font-style:normal;font-weight:850;margin-bottom:7px}.nelc-roles{font-size:.9rem}.nelc-roles th{color:var(--gold)}
body.single-canvas .heading{grid-template-columns:minmax(0,1fr) auto auto}body.single-canvas .heading .nelc-chip{justify-self:end}body.single-canvas .end-page .readiness-strip{margin-top:3px}
@media(max-width:1000px){.nelc-chip{display:none}.nelc-principles{grid-template-columns:1fr 1fr}.nelc-stages{grid-template-columns:1fr 1fr}.nelc-reference{grid-template-columns:70px 1fr}.nelc-wordmark{width:64px;height:64px;border-radius:18px}.nelc-wordmark span{width:42px;height:42px;font-size:.66rem}.readiness-strip{grid-template-columns:1fr}}@media(max-width:620px){.nelc-principles,.nelc-stages{grid-template-columns:1fr}.nelc-reference{grid-template-columns:1fr}.nelc-wordmark{width:58px;height:58px}}
/* req-v5 · lecture design requirements (14 Oct 2026): glossary, source lists, transfer case, rubrics, time chips, coverage, study list */
dfn.gl{font-style:normal;border-bottom:1px dotted currentColor;cursor:help;position:relative;text-decoration:none}
dfn.gl:hover::after,dfn.gl:focus::after{content:attr(data-def);position:absolute;left:0;top:100%;z-index:30;min-width:220px;max-width:360px;padding:6px 10px;border-radius:8px;background:var(--panel);color:var(--ink);border:1px solid var(--line);font-size:14px;line-height:1.4;font-weight:400;white-space:normal;box-shadow:0 6px 18px rgba(0,0,0,.35)}
dfn.gl[data-ar]:hover::after,dfn.gl[data-ar]:focus::after{content:attr(data-def) " · " attr(data-ar)}
.gl-def{font-style:normal;color:var(--dim);font-size:.9em}
.src-lists{--lfit:1;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:calc(8px * var(--lfit));margin-top:calc(8px * var(--lfit));min-height:0}
.gl-strip{margin:0;flex:0 0 auto;display:flex;flex-wrap:wrap;gap:3px 14px;font-size:13px;line-height:1.3;color:var(--dim)}
.gl-strip b{font-size:10.5px;letter-spacing:.08em;color:var(--teal);align-self:center}
.gl-strip dfn.gl{color:var(--ink);font-weight:600}
.chapter-main.dense{overflow-y:auto;scrollbar-width:thin}
.chapter-main.dense .body-grid,html[data-stage="v4"] body.single-canvas #app .chapter-main.dense .body-grid{flex:1 1 auto;min-height:240px;overflow:auto;scrollbar-width:thin}
.chapter-main.dense .figure-button img{max-height:200px}
.src-list{border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:8px;padding:calc(6px * var(--lfit)) 10px;background:var(--panel);min-width:0}
.src-list h3{margin:0 0 calc(4px * var(--lfit));font-size:calc(11px * var(--lfit));letter-spacing:.08em;color:var(--teal)}
.src-list ol{margin:0;padding-left:18px;font-size:calc(14px * var(--lfit));line-height:1.3}
:is(b,strong,h1,h2,h3,dt):has(> .gl-def){white-space:normal}
.src-list li{margin:1px 0}
.transfer-case{margin:6px 0 0;padding:5px 10px;border:1px dashed var(--gold);border-radius:10px;background:var(--panel);font-size:13.5px;line-height:1.3}
.transfer-case span{display:block;font-size:10px;letter-spacing:.08em;color:var(--gold)}
.transfer-case b{display:inline;margin-right:8px;font-size:14px}
.transfer-case p{display:inline;margin:0}
.transfer-case small{display:inline;margin-left:8px;color:var(--dim);font-size:12px}
.question.q2{margin-top:0;padding-top:4px;border-top:0}
.question.q2 .think-btn{display:none}
.tier-chip{align-self:center;margin-right:8px;padding:2px 9px;border-radius:999px;font-size:11px;letter-spacing:.06em;border:1px solid var(--line);color:var(--dim)}
.tier-chip.optional{border-style:dashed;color:var(--gold)}
.index-grid button.optional span{color:var(--dim)}
.station-rubric{margin:8px 0;border:1px solid var(--line);border-radius:8px;padding:6px 12px;background:var(--panel)}
.station-rubric summary{cursor:pointer;font-weight:600;color:var(--violet)}
.station-rubric table{width:100%;border-collapse:collapse;font-size:13px;margin:8px 0}
.station-rubric th,.station-rubric td{border:1px solid var(--line);padding:4px 6px;text-align:left;vertical-align:top}
.rub-ex{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:8px}
.rub-ex>div{border-left:3px solid var(--green);padding:4px 10px;font-size:13px}
.rub-ex>div.weak{border-left-color:var(--pink)}
.rub-ex b{display:block;font-size:11px;letter-spacing:.08em}
.rub-ex p{margin:2px 0}
.rub-ex small{color:var(--dim)}
.coverage-table{font-size:13px}
.coverage-table tr.cov-no td{color:var(--dim)}
.coverage-table tr.cov-slide td:nth-child(3){color:var(--green)}
.study-list{padding-left:20px}
.study-list li{margin:6px 0}
.study-list p{margin:2px 0}
@media (max-width:1000px){.src-lists{grid-template-columns:1fr}dfn.gl:hover::after,dfn.gl:focus::after{left:auto;right:0}}

/* req-v6 · second report: station transfer step, source figure links, AI assignment rubric */
.station-transfer{margin:8px 0;padding:6px 12px;border:1px dashed var(--gold);border-radius:10px;background:var(--panel)}
.station-transfer b{display:block;font-size:11px;letter-spacing:.08em;color:var(--gold)}
.station-transfer span{display:block;font-weight:600;margin-top:2px}
.station-transfer p{margin:2px 0 0}
.src-figs .src-fig-row{display:flex;flex-wrap:wrap;gap:8px}
.src-fig{display:flex;flex-direction:column;gap:2px;max-width:220px;font-size:12px;color:var(--teal)}
.src-fig img{max-width:100%;max-height:120px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:6px}
.aix-rubric table{width:100%;border-collapse:collapse;font-size:13px;margin:8px 0}
.aix-rubric th,.aix-rubric td{border:1px solid var(--line);padding:4px 6px;text-align:left;vertical-align:top}

/* report 4 · COMMIT: write before the reveal */
.commit-box{display:flex;flex-direction:column;gap:2px;margin:4px 0 2px;flex:0 0 auto}
.commit-box span{font-size:10.5px;letter-spacing:.08em;color:var(--teal)}
.commit-box textarea{font:inherit;font-size:15px;line-height:1.3;padding:5px 8px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink);resize:vertical;min-height:2.1em}
.skip-btn{opacity:.85}
button[data-commit-for]:disabled{opacity:.55;cursor:not-allowed}
.you-wrote{margin:0 0 6px;padding:5px 9px;border-left:3px solid var(--teal);background:var(--panel);font-size:14px}
.you-wrote.none{border-left-color:var(--gold)}
.you-wrote p{margin:2px 0}

/* report 4 · REAL: fixed tags for the training story, real incidents and textbook cases */
.kind-tag{display:inline-block;margin:0 6px;padding:1px 7px;border-radius:999px;font-style:normal;font-size:10px;font-weight:700;letter-spacing:.08em;line-height:1.5;vertical-align:middle;white-space:nowrap;border:1px solid currentColor}
.kind-training{color:var(--teal)}
.kind-real{color:var(--pink)}
.kind-source,.kind-fictional{color:var(--gold)}
.kind-line{margin:6px 0 0;font-size:13px;line-height:1.45;color:var(--dim)}
.kind-line .kind-tag{margin-left:0}
.real-differs{margin:6px 0 0}

/* report 4 · GATE: transfer check */
.gate-btn{margin:4px 0;border:1px dashed var(--gold);font-weight:600}
.gate-btn.done{border-style:solid;border-color:var(--green);color:var(--green)}
.gate-note{margin-left:6px;padding:1px 8px;font-size:12px;border:1px solid var(--gold);border-radius:999px;background:transparent;color:var(--gold);cursor:pointer}
.tc-opts{display:flex;flex-direction:column;gap:6px;margin:8px 0}
.tc-opts button{text-align:left}
.tc-opts button.right{border-color:var(--green);color:var(--green)}
.tc-opts button.wrong{border-color:var(--pink);color:var(--pink)}
.tc-right{border-left:3px solid var(--green);padding-left:8px}
.tc-wrong{border-left:3px solid var(--pink);padding-left:8px}

/* report 4 · BOUND: when the chapter's mechanism is the wrong choice */
.bound-block{margin:10px 0;padding:8px 12px;border:1px solid var(--line);border-left:3px solid var(--violet);border-radius:10px;background:var(--panel)}
.bound-block .ey{margin:0 0 4px;color:var(--violet)}
.bound-answer p{margin:4px 0}
/* END slide: the gate button and the boundary sentence fit in one row each so the close slide does not overflow */
.end-copy .gate-btn{margin:2px 0 4px;padding:4px 10px;min-height:0;font-size:13px}
.bound-block{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 8px;align-items:end;margin:6px 0}
.bound-block>.ey,.bound-block>.bound-answer{grid-column:1/-1}
.bound-block>.buttons{display:flex;gap:6px;margin:0}
.bound-block .commit-box{margin:0}
@media(max-width:700px){.bound-block{grid-template-columns:1fr}.bound-block>.buttons{flex-wrap:wrap}}
.end-copy:has(.bound-block)>h2{min-height:0;margin:2px 0 4px}
html[data-design] body.single-canvas .end-copy:has(.bound-block) .readiness-strip{margin:4px 0 6px;gap:6px}
html[data-design] body.single-canvas .end-copy:has(.bound-block) .readiness-strip section{padding:5px 9px}
html[data-design] body.single-canvas .end-copy:has(.bound-block) .readiness-strip span{font-size:.8rem;line-height:1.3}
html[data-design] body.single-canvas .end-hero:has(.bound-block){padding-top:14px;padding-bottom:14px}
.end-copy:has(.bound-block)>.end-success{margin:4px 0}
/* Story END grid (stage-v4): the transfer-check button and the boundary sentence get their own areas */
@media (min-width:1001px){
 html[data-stage="v4"] body.single-canvas #app .end-page .end-copy:has(.bound-block){grid-template-areas:"ey ey" "gate gate" "h2 h2" "epi req" "epi bnd" "gut bnd" "exit act"}
 html[data-stage="v4"] body.single-canvas #app .end-page .end-copy>.gate-btn{grid-area:gate;justify-self:start;margin:0}
 html[data-stage="v4"] body.single-canvas #app .end-page .end-copy>.bound-block{grid-area:bnd;margin:0}
}
html[data-stage="v4"] .end-page .bound-block{grid-template-columns:minmax(0,1fr)}
html[data-stage="v4"] .end-page .bound-block>.buttons button{padding:4px 10px;min-height:0;font-size:.85rem}
/* the kind tag adds a third item to scene rows: let them wrap on narrow screens instead of pushing text off the page */
.act-scene,.twist-scene,.practice-scene{flex-wrap:wrap}
.act-scene>p,.twist-scene>p,.practice-scene>p{flex:1 1 220px;min-width:0}
@media (max-height:760px){.end-copy:has(.bound-block)>.end-success{display:none}}
/* an open inline answer: the slide scrolls; the table / WHAT IT MEANS grid keeps its height instead of being overlapped */
.chapter-main.answer-open{overflow-y:auto;scrollbar-width:thin}
.chapter-main.answer-open .body-grid,html[data-stage="v4"] body.single-canvas #app .chapter-main.answer-open .body-grid{flex-shrink:0}
/* Before the assignment · their change (Chapters 15, 16, 17, 20) */
.their-block{margin:10px 0 0;padding:10px 14px;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:10px;background:var(--panel)}
.their-block .ey{margin:0 0 6px}
.their-run{margin:0 0 8px;padding:8px 10px;border-radius:8px;background:rgba(0,0,0,.05);font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.their-q{margin:0 0 6px}