:root{--bg:#07142b;--panel:#0d1d39;--line:#243655;--text:#f7f3ea;--muted:#a9b5c8;--gold:#d9b46c;--blue:#2f80ff}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 50% 0,#132b55 0,#07142b 48%,#050d1d 100%);color:var(--text);font:16px Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;min-height:100vh}
header{height:78px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;background:#07142be8;position:sticky;top:0;z-index:5}.brand{font-family:Georgia,serif;font-size:28px;letter-spacing:3px}.brand span{font-size:18px}.brand small{display:block;font:9px Inter;letter-spacing:5px;color:var(--gold);margin-left:27px}.stage{font-size:11px;letter-spacing:2px;color:var(--muted)}
main{max-width:1180px;margin:auto;padding:50px 24px}.hero{display:grid;grid-template-columns:1.5fr .8fr;gap:36px;align-items:end;margin-bottom:35px}.eyebrow{color:var(--gold);font-size:11px;letter-spacing:3px}.hero h1{font:48px Georgia,serif;margin:8px 0}.hero p{color:var(--muted);line-height:1.7;max-width:680px}.status{background:#0c1c37;border:1px solid var(--line);border-radius:18px;padding:22px}.status>*{display:block}.status span{margin:8px 0}.status small{color:var(--gold)}
.workspace{display:grid;grid-template-columns:260px 1fr;border:1px solid var(--line);border-radius:24px;overflow:hidden;min-height:650px;background:#08162d99;box-shadow:0 30px 80px #0005}aside{padding:30px 22px;border-right:1px solid var(--line);background:#0a1932}aside h2{margin:12px 0 2px;font-family:Georgia,serif}aside p,.disclosure{color:var(--muted);font-size:13px}.portrait{width:74px;height:74px;border-radius:50%;display:grid;place-items:center;font:34px Georgia;background:linear-gradient(145deg,#27466d,#101b30);border:2px solid #b89454;box-shadow:0 0 0 5px #142744}.mini{width:38px;height:38px;font-size:18px;flex:none}.online{font-size:12px;color:#9fd7b1;margin:12px 0 20px}button{width:100%;padding:12px;border-radius:10px;border:1px solid #53637c;background:transparent;color:white;margin:5px 0;cursor:pointer}.primary,.send{background:linear-gradient(90deg,#c99e54,#e1c17e);color:#111;border:0;font-weight:700}hr{border:0;border-top:1px solid var(--line);margin:25px 0}#record div{display:flex;justify-content:space-between;font-size:12px;margin:12px 0;color:var(--muted)}#record b{color:#d9e0eb}
.chat{padding:30px;display:flex;flex-direction:column}.msg{display:flex;gap:13px;margin:0 0 20px;max-width:760px}.msg>div:last-child{background:#112441;border:1px solid var(--line);padding:16px 18px;border-radius:4px 18px 18px 18px}.msg p{margin:6px 0;line-height:1.55;color:#dbe3ee}.user{margin-left:auto}.user>div:last-child{background:#193763;border-radius:18px 4px 18px 18px}.faculty{display:flex;gap:8px;flex-wrap:wrap;margin:auto 0 16px}.chip{font-size:11px;border:1px solid #4b5c78;border-radius:99px;padding:7px 10px;color:#cbd5e4}.chip.active{border-color:var(--gold);color:var(--gold)}form{margin-top:auto;display:flex;gap:10px;border-top:1px solid var(--line);padding-top:20px}textarea{flex:1;background:#071327;border:1px solid #354967;border-radius:14px;color:white;padding:15px;font:inherit;resize:none}.send{width:120px}.disclosure{text-align:center;margin-top:12px}
@media(max-width:760px){.stage{display:none}.hero{grid-template-columns:1fr}.hero h1{font-size:38px}.workspace{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid var(--line)}.chat{min-height:600px;padding:20px}form{flex-direction:column}.send{width:100%}}
:root{--gold:#c9d1df} .brand small,.eyebrow,.status small{color:#c9d1df}.primary,.send{background:linear-gradient(90deg,#c4cedc,#f2f5fa);color:#07142b}.portrait{border-color:#a9bbcf}.chip.active{border-color:#c4cedc;color:#f0f3f9}#proposals:not(:empty){border:1px solid var(--line);padding:12px;border-radius:12px;margin-bottom:12px} .proposal{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-top:10px;font-size:13px}.proposal button{width:auto;min-width:90px;margin:0} @media(max-width:760px){header{padding:0 18px}main{padding:22px 12px}.hero h1{font-size:32px}.workspace{border-radius:15px}.proposal{flex-direction:column;align-items:stretch}}

:root{--gold:#d5dce6} .brand small,.eyebrow,.status small{color:#c8d5e5}.portrait{border-color:#aebdd0}.primary,.send{background:linear-gradient(90deg,#cbd5e1,#f2f5fa);color:#101c2f}.chip.active{border-color:#d3dce7;color:#e2e9f1} .msg p{white-space:pre-wrap;overflow-wrap:anywhere}.home-link{color:#dbe5f2;text-decoration:none}.chat textarea:focus-visible,button:focus-visible{outline:2px solid #9ac4ff;outline-offset:3px} @media(max-width:760px){header{gap:10px;padding:12px 16px}.brand{font-size:20px}.brand span{font-size:14px}.brand small{letter-spacing:3px}.home-link{font-size:11px}.chat{min-height:480px} .workspace{min-height:0}aside{padding:18px}.chat{padding:18px}}
/* v14 · student-first classroom, Navy & Satin Silver */
:root{--gold:#d5dce6}
.hero{align-items:center}.hero h1{font-size:clamp(32px,4vw,50px);letter-spacing:-.025em}
.workspace{box-shadow:0 25px 90px #0004;background:linear-gradient(150deg,#0d1d38,#08152a)}
.sage-identity{display:flex;align-items:center;gap:16px}.sage-identity h2{margin:0 0 4px}.sage-identity p{margin:0}
.sage-identity .portrait{width:68px;height:68px;flex:none}
.next-action{border:1px solid #435875;background:#122743;border-radius:14px;padding:14px;color:#e6edf7;font-size:13px;line-height:1.6;margin-bottom:24px}
.faculty-heading{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:12px 0 10px;color:#e6edf7;font-size:12px}.faculty-heading small{color:#9daec6}
.chip{background:#10233e}.chat{min-width:0}.msg{max-width:100%}.msg>div:last-child{min-width:0}.msg p{overflow-wrap:anywhere}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
button:disabled{opacity:.55;cursor:not-allowed}
@media(max-width:760px){.hero{gap:14px}.hero p{line-height:1.5}.sage-identity{justify-content:flex-start}.faculty-heading{display:block}.faculty-heading small{display:block;margin-top:4px}.chat{min-height:430px}.msg>div:last-child{padding:13px}}

/* Approved fixed Yela portrait in classroom and chat */
img.portrait.sage, img.mini.sage {object-fit:cover;object-position:center;display:block;}

/* Actual request status; no simulated thinking or deliberation. */
.response-pending{margin:0 0 16px;padding:4px 12px}
.pending-mark{display:inline-block;color:#cbd5e1;font-size:24px;letter-spacing:3px;line-height:1}
.faculty-heading[hidden]{display:none}
.research-controls{padding:.8rem;border:1px solid #8a8a8a;border-radius:.5rem;margin:.5rem 0}
.research-controls label{display:block;margin:.5rem 0}
.research-controls input,.research-controls select{max-width:100%}
.research-controls input[type="checkbox"]{width:auto}
.research-controls small{display:block}
.msg a{text-decoration:underline;overflow-wrap:anywhere}

.message-text{margin:6px 0;line-height:1.55;color:#dbe3ee;white-space:pre-wrap;overflow-wrap:anywhere}
.research-table-scroll{overflow-x:auto;white-space:normal;margin:.6rem 0}.research-table-scroll table{border-collapse:collapse;width:100%}.research-table-scroll th,.research-table-scroll td{padding:.5rem;border:1px solid var(--line);text-align:left;vertical-align:top}

/* Classroom-only light presentation. Homepage and Studio keep their existing themes. */
.classroom{--bg:#F7F8FA;--panel:#FFFFFF;--text:#10213A;--muted:#475569;--line:#D7DEE8;--gold:#1557A0;--blue:#1557A0;background:#F7F8FA;color:#10213A;color-scheme:light}
.classroom header,.classroom .status,.classroom .workspace,.classroom aside,.classroom .chat,.classroom details,.classroom #proposals:not(:empty){background:#FFFFFF;color:#10213A}
.classroom .workspace{box-shadow:0 12px 32px #10213A0D}
.classroom .home-link,.classroom .brand small,.classroom .eyebrow,.classroom .status small{color:#1557A0}
.classroom .stage,.classroom .hero p,.classroom aside p,.classroom .disclosure,.classroom #record div,.classroom .faculty-heading small,.classroom #usageStatus{color:#475569}
.classroom #record b,.classroom .faculty-heading,.classroom .message-text,.classroom .msg p{color:#10213A}
.classroom .online{color:#23613F}
.classroom .next-action{background:#F7F8FA;border-color:#D7DEE8;color:#10213A}
.classroom .portrait{border-color:#78879A;box-shadow:none}
.classroom .msg>div:last-child{background:#FFFFFF;border-color:#D7DEE8;color:#10213A}
/* Labels/portraits, alignment and different border shapes distinguish speakers beyond color. */
.classroom .msg.user>div:last-child{background:#EAF1FA;border-left:4px solid #1557A0;border-radius:18px 4px 18px 18px}
.classroom .chip,.classroom .chip.active{background:#EAF1FA;border-color:#78879A;color:#10213A}
.classroom button{background:#FFFFFF;color:#1557A0;border:1px solid #78879A;min-height:44px;opacity:1}
.classroom .primary,.classroom .send{background:#1557A0;color:#FFFFFF;border-color:#1557A0}
.classroom button:hover:not(:disabled){background:#EAF1FA;color:#10213A}
.classroom button:disabled{background:#E2E8F0;color:#475569;border-color:#78879A;opacity:1;cursor:not-allowed}
.classroom textarea,.classroom select,.classroom input:not([type="checkbox"]),.classroom option{background:#FFFFFF;color:#10213A;border:1px solid #78879A;border-radius:10px;font:inherit;max-width:100%;min-width:0}
.classroom textarea::placeholder,.classroom input::placeholder{color:#526174;opacity:1}
.classroom select,.classroom input:not([type="checkbox"]){min-height:44px;padding:8px}
.classroom input[type="checkbox"]{accent-color:#1557A0;min-width:20px;min-height:20px}
.classroom a{color:#1557A0;text-decoration:underline;overflow-wrap:anywhere}
.classroom :is(a,button,textarea,select,input,summary):focus-visible{outline:3px solid #1557A0;outline-offset:3px}
.classroom summary{cursor:pointer;min-height:44px;padding:10px 0}
.classroom .research-controls{border-color:#D7DEE8}
.classroom .pending-mark{color:#475569}
.classroom #sendStatus{color:#9F1D2D}
.classroom #journeyStatus{color:#475569}
.classroom #journeyHistory,.classroom #researchPreview,.classroom .next-action,.classroom .status span{overflow-wrap:anywhere;white-space:pre-wrap}
.classroom .research-table-scroll{max-width:100%;overscroll-behavior-x:contain}
.classroom #journeyForm{flex-wrap:wrap}
.classroom #journeyForm label{flex:1 1 260px;min-width:0}
.classroom #journeyForm textarea{display:block;width:100%}
.classroom #journeyForm p{flex-basis:100%}
.classroom #chatForm{flex-direction:row;align-items:flex-end;gap:10px;padding-bottom:env(safe-area-inset-bottom,0px)}
.classroom #message{width:0;min-width:0;flex:1 1 0;font-size:16px;scroll-margin-block:100px}
.classroom #chatForm .send{width:48px;height:48px;min-width:48px;min-height:48px;flex:0 0 48px;border-radius:50%;padding:0;margin:0;display:grid;place-items:center;font-size:26px;line-height:1}
@media(max-width:760px){.classroom header{height:auto;min-height:78px;flex-wrap:wrap}.classroom .chat{padding:16px}.classroom .msg{gap:8px}.classroom #journeyForm label{flex-basis:auto}.classroom #chatForm{flex-direction:row}.classroom .research-controls label{overflow-wrap:anywhere}}
.classroom .proposal{min-width:0;overflow-wrap:anywhere}
.classroom #record div{gap:12px;flex-wrap:wrap}

.classroom .education-form{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}.classroom .education-form label{min-width:0;display:block}.classroom .education-form textarea{display:block;width:100%;min-height:72px}.classroom #educationHistory{white-space:pre-wrap;overflow-wrap:anywhere;color:#10213A}.classroom #educationStatus{color:#475569}

/* One conversation, with secondary non-modal tools. Classroom only. */
.classroom [hidden]{display:none!important}
.classroom .workspace{display:grid;grid-template-columns:minmax(0,1fr);overflow:visible}
.classroom .workspace.has-tools-open{grid-template-columns:minmax(260px,340px) minmax(0,1fr)}
.classroom .conversation-toolbar{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;border-bottom:1px solid var(--line);background:#FFF;border-radius:24px 24px 0 0}
.classroom .conversation-toolbar .sage-identity .portrait{width:48px;height:48px}
.classroom .conversation-toolbar h2{font:24px Georgia,serif;margin:0}
.classroom .conversation-toolbar p{font-size:13px;color:#475569;margin:4px 0 0}
.classroom #toolsToggle{width:auto;min-width:140px;min-height:48px;flex-shrink:0}
.classroom #toolsPanel{min-width:0;padding:16px;border-right:1px solid var(--line);border-bottom:0;max-height:900px;overflow-y:auto;overscroll-behavior:contain}
.classroom .tools-nav{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.classroom .tools-nav button{font-size:14px;margin:0;min-height:48px;text-align:left}
.classroom .tools-nav button[aria-pressed="true"]{background:#1557A0;color:#FFF}
.classroom [data-tool-panel]{overflow-wrap:anywhere}
.classroom [data-tool-panel] h3{font-size:18px}
.classroom .action-card,.classroom .stage-card{border:1px solid var(--line);border-radius:12px;padding:12px;margin:12px 0}
.classroom .action-card h4,.classroom .stage-card h4{margin:0 0 8px}
.classroom .next-action{margin-bottom:10px}
.classroom .stage-card p,.classroom .action-card p,.classroom [data-tool-panel]>p{line-height:1.5;color:#475569}
.classroom .stage-card button{min-height:48px}
.classroom #journeyForm{display:flex;flex-direction:column;gap:12px}
.classroom #journeyForm label,.classroom #journeyForm p{flex:initial}
.classroom .chat{min-height:0;padding:16px;min-width:0}
.classroom #messages{overflow-y:auto;overscroll-behavior-y:contain;max-height:650px;max-height:clamp(120px,calc(var(--classroom-viewport-height,100dvh) - 310px),650px);scrollbar-gutter:stable;padding:4px;overflow-anchor:none}
.classroom .composer{position:sticky;bottom:0;background:#FFF;padding:8px 0 max(8px,env(safe-area-inset-bottom));z-index:2}
.classroom #chatForm{margin:0;padding-top:10px}
.classroom #message{min-height:74px;max-height:180px;resize:vertical}
.classroom #usageStatus,.classroom #sendStatus{font-size:13px;margin:6px 0;overflow-wrap:anywhere}
.classroom #researchSelection{font-size:13px;padding:8px;border:1px solid var(--line);border-radius:8px;color:#10213A}
.classroom #clearResearch{width:auto;min-height:44px;margin:0 0 0 8px}
.classroom .research-controls{padding:0;border:0}
.classroom .disclosure{line-height:1.4}
@media(max-width:760px){
 .classroom main{padding-top:16px}.classroom .hero{margin-bottom:18px}
 .classroom .workspace.has-tools-open{grid-template-columns:minmax(0,1fr)}
 .classroom .conversation-toolbar{padding:12px;gap:8px;border-radius:15px 15px 0 0}
 .classroom .conversation-toolbar .sage-identity{gap:8px}
 .classroom .conversation-toolbar .sage-identity .portrait{width:38px;height:38px}
 .classroom .conversation-toolbar .sage-identity p{font-size:12px}
 .classroom #toolsToggle{min-width:124px;font-size:14px;padding:8px}
 .classroom #toolsPanel{max-height:65vh;border-right:0;border-bottom:1px solid var(--line)}
 .classroom .chat{padding:10px}
 .classroom #messages{max-height:clamp(100px,calc(var(--classroom-viewport-height,100dvh) - 240px),600px)}
}
@media(max-width:360px){.classroom .conversation-toolbar .sage-identity p{display:none}.classroom .conversation-toolbar .sage-identity .portrait{width:30px;height:30px}.classroom #toolsToggle{min-width:115px}}

.classroom [data-tool-panel] h3:focus-visible{outline:3px solid #1557A0;outline-offset:3px}
.classroom #draftStatus{font-size:13px;color:#475569;overflow-wrap:anywhere}

/* Rendered-layout correction: composer follows history without covering replies. */
.classroom .composer{position:static;flex-shrink:0}
.classroom header #toolsToggle{min-width:48px;margin:0;white-space:nowrap}
.classroom .conversation-toolbar{padding:12px 16px}
@media(max-width:760px){
 .classroom header{flex-wrap:nowrap;gap:8px;padding:10px 12px;min-height:72px}
 .classroom header .brand{font-size:18px;letter-spacing:2px}
 .classroom header .brand span{font-size:12px}.classroom header .brand small{font-size:8px;letter-spacing:2px;margin-left:12px}
 .classroom header #toolsToggle{min-width:112px;padding:8px;font-size:13px}
 .classroom .hero{gap:8px;margin-bottom:12px}.classroom .hero h1{font-size:26px;margin:4px 0}
 .classroom .hero p{font-size:14px;line-height:1.5;margin:6px 0}
 .classroom .hero .status{padding:10px 14px}.classroom .hero .status small{font-size:10px;line-height:1.4}
 .classroom .hero .status span{margin:4px 0}.classroom .hero .eyebrow{font-size:10px}
}

/* Mutually exclusive small-screen views; one tool per view. */
.classroom .tools-header{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:12px}
.classroom .tools-header h2{font:24px Georgia,serif;margin:0}
.classroom #toolsClose{width:auto;min-width:120px;min-height:48px;margin:0}
.classroom #toolsBack{width:auto;min-height:48px;margin-bottom:12px}
.classroom #toolsPanel{max-height:calc(var(--classroom-viewport-height,100dvh) - 120px)}
.classroom #toolsPanel h3{margin-top:6px}
.classroom .tools-nav{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.classroom .tools-nav button{padding:14px;font-size:15px;line-height:1.5}
.classroom #toolsPanel label{display:flex;flex-direction:column;gap:8px;align-items:stretch;line-height:1.5;margin:0 0 12px}
.classroom #toolsPanel label:has(input[type="checkbox"]){flex-direction:row;align-items:flex-start;gap:10px}
.classroom #toolsPanel textarea,.classroom #toolsPanel select,.classroom #toolsPanel input:not([type="checkbox"]){width:100%;display:block}
.classroom #toolsPanel .form-options{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:0}
.classroom #toolsPanel .form-options summary{font-weight:600}
.classroom #toolsPanel form{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.classroom #toolsPanel form label{margin:0}
.classroom #projectDecisions{white-space:pre-wrap;overflow-wrap:anywhere}
.classroom #educationalInfo{margin-top:18px;font-size:13px;color:#475569}
.classroom #usageStatus{font-size:12px;line-height:1.45;margin:4px 0}
@media(min-width:1101px){.classroom .workspace.has-tools-open{grid-template-columns:minmax(340px,390px) minmax(0,1fr)}}
@media(max-width:1100px){
 .classroom .workspace.has-tools-open,.classroom .workspace.tools-only{grid-template-columns:minmax(0,1fr)}
 .classroom .workspace.tools-only{border:0;box-shadow:none;background:transparent}
 .classroom .workspace.tools-only #toolsPanel{height:calc(var(--classroom-viewport-height,100dvh) - 116px);max-height:none;width:100%;border:1px solid var(--line);border-radius:14px;padding:16px;overflow-y:auto;overscroll-behavior:contain}
 .classroom .tools-header{position:sticky;top:-16px;z-index:1;background:#FFF;padding:12px 0;border-bottom:1px solid var(--line)}
 .classroom main:has(.tools-only){padding-top:12px}
}

.classroom #toolsPanel .form-options label{margin:12px 0 0}
.classroom #toolsPanel .education-info p{line-height:1.6;color:#475569}

/* Final classroom readability: one document scroll, no nested chat cards/heights. */
.classroom .workspace{display:block;border:0;border-radius:0;box-shadow:none;background:transparent;min-height:0;overflow:visible}
.classroom .workspace.has-tools-open{display:grid}
.classroom .workspace.tools-only{display:grid}
.classroom .conversation-toolbar{border:0;border-radius:0;background:transparent;padding:12px 0;margin:0 0 16px}
.classroom .chat{background:transparent;padding:0;max-width:900px;margin:0 auto;width:100%}
.classroom #messages{height:auto;max-height:none;min-height:0;overflow:visible;overscroll-behavior:auto;padding:0;scrollbar-gutter:auto}
.classroom .msg{font-size:16px;line-height:1.65;gap:12px;margin:0 0 28px;scroll-margin-top:100px}
.classroom .msg>div:last-child{background:transparent;border:0;border-radius:0;padding:0;flex:1;min-width:0}
.classroom .message-text,.classroom .msg p{font-size:16px;line-height:1.65;margin:6px 0}
.classroom .msg.user{margin-left:48px;background:#EAF1FA;border-left:3px solid #1557A0;border-radius:8px;padding:12px 16px}
.classroom .msg.user>div:last-child{border:0;background:transparent;border-radius:0;padding:0}
.classroom .composer{position:static;background:transparent;margin-top:20px;padding-top:12px;border-top:1px solid var(--line)}
.classroom #chatForm{border-top:0;padding-top:8px}
.classroom .tool-editor{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:12px 0}
.classroom .tool-editor>summary{font-weight:600}
.classroom #toolsPanel .primary{margin:12px 0;min-height:48px}
.classroom #toolsPanel .stage-card>p{margin:8px 0}
@media(max-width:1100px){
 .classroom main{padding-left:16px;padding-right:16px}
 .classroom .hero{display:block;margin:8px 0 12px}
 .classroom .hero>div:first-child{display:none}
 .classroom .hero .status{border:0;border-radius:0;background:transparent;padding:0;font-size:13px}
 .classroom .hero .status>b,.classroom .hero .status>small{display:none}
 .classroom .hero .status span{margin:0}
 .classroom .conversation-toolbar{padding:8px 0;margin:0 0 20px}
 .classroom .chat{padding:0}
 .classroom .msg{gap:10px;margin-bottom:24px}
 .classroom .msg.user{margin-left:24px;padding:12px}
}

/* Mobile keyboard correction: a single document scroll owner in either view. */
.classroom #toolsPanel,.classroom .workspace.tools-only #toolsPanel{height:auto;max-height:none;min-height:0;overflow:visible;overscroll-behavior:auto}
.classroom .workspace.has-tools-open{align-items:start}
.classroom .tools-header{position:static;align-items:flex-start}
.classroom .tools-header h2{min-width:0;flex:1;overflow-wrap:anywhere;line-height:1.3}
.classroom #toolsClose{flex:none;min-width:110px}
.classroom [data-tool-panel] h3{display:none}
.classroom{padding-bottom:calc(16px + env(safe-area-inset-bottom,0px) + var(--classroom-viewport-bottom-gap,0px))}
.classroom textarea{font-size:16px;overflow-y:auto;scroll-margin-top:100px;scroll-margin-bottom:32px;max-height:min(180px,calc(var(--classroom-viewport-height,100dvh) - 140px))}
.classroom #message{max-height:min(180px,calc(var(--classroom-viewport-height,100dvh) - 140px))}