:root{--ink:#15243c;--navy:#13233c;--blue:#315ce7;--blue-soft:#eaf0ff;--green:#227363;--paper:#f0f3f8;--muted:#617087;--line:#dce3ee;--white:#fff;--radius:20px;font-family:Calibri,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
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.presenter-sidebar{display:flex;flex-direction:column;gap:16px;min-width:0}.presenter-sidebar>.control-panel:first-child{position:sticky;top:12px;z-index:6;box-shadow:0 5px 18px #15243c0b}.control-panel{background:white;border:1px solid var(--line);border-radius:14px;padding:20px}.control-panel h2{font-size:14px;margin:0 0 14px;font-weight:750}.slide-select{display:block;width:100%;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);font-size:14px;padding:11px 8px;margin-bottom:12px;min-height:43px}.nav-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px}.nav-buttons .button{padding:12px 10px}.notes-panel{flex:1}.speaker-notes{font-size:15px;line-height:1.62;color:#42526b;margin:0;white-space:pre-wrap}.next-slide{font-size:12px;color:var(--muted);border-top:1px solid var(--line);margin-top:20px;padding-top:14px;line-height:1.5}.next-slide strong{color:var(--ink);display:block;margin-top:4px}.sharing-row{display:flex;gap:6px;margin-bottom:8px}.sharing-row .button{flex:1;padding:9px 6px;font-size:12px}.sharing-code{display:flex;justify-content:space-between;align-items:center;font-size:12px;background:var(--paper);padding:12px;border-radius:8px;margin-top:12px}.sharing-code strong{font-size:18px;letter-spacing:.12em}.control-details{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}.control-details summary{font-size:12px;color:var(--muted);cursor:pointer}.control-details .button{margin-top:10px;width:100%}.control-details p{font-size:12px;line-height:1.45;color:var(--muted)}.presenter-bottom{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:14px 2px;font-size:12px;color:var(--muted)}.progress-track{height:3px;background:#dce3ef;border-radius:3px;margin:0 3px}.progress-track span{display:block;height:100%;background:var(--blue);border-radius:3px;transition:width .2s}.projector .topbar{height:49px;padding:0 24px}.projector .brand-label{display:none}.projector .participant-layout{padding:16px 26px 10px;max-width:none}.projector .slide-inner{min-height:calc(100dvh - 120px)}.projector .cover .slide-inner{min-height:calc(100dvh - 120px)}.projector .cover-image{min-height:calc(100dvh - 120px)}.projector .cover h1{font-size:clamp(48px,5.2vw,83px)}.projector .slide-inner h1{font-size:clamp(35px,4vw,65px)}.projector .lab h1{font-size:30px}.projector .lab .slide-inner{min-height:0}.projector .lab-viewport{height:calc(100dvh - 230px);min-height:300px}.projector .participant-hint{display:none}.projector .button{font-size:17px}.projector .lab-tools .button{font-size:13px}.waiting{padding:70px 30px;text-align:center;max-width:640px;margin:60px auto;background:white;border:1px solid var(--line);border-radius:18px}.waiting h1{font-size:32px;letter-spacing:-.03em}.waiting p{font-size:18px;color:var(--muted);line-height:1.5}.waiting-mark{display:block;color:var(--blue);font-size:45px}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);z-index:100;pointer-events:none;padding:13px 22px;background:var(--navy);border:1px solid #ffffff25;color:white;border-radius:10px;font-size:14px;opacity:0;transition:opacity .2s,transform .2s;max-width:calc(100% - 32px);text-align:center}.toast.visible{opacity:1;transform:translate(-50%,0)}.prompt-dialog{width:min(850px,calc(100% - 32px));max-height:90dvh;padding:30px;border:1px solid var(--line);border-radius:18px;color:var(--ink);box-shadow:0 20px 100px #0004}.prompt-dialog::backdrop{background:#101d35aa;backdrop-filter:blur(4px)}.prompt-dialog header{display:flex;align-items:center;justify-content:space-between}.prompt-dialog h2{font-size:30px;letter-spacing:-.03em;margin:20px 0 12px}.prompt-dialog p{font-size:14px;line-height:1.5}.prompt-dialog textarea{width:100%;height:45dvh;min-height:160px;resize:vertical;border:1px solid var(--line);border-radius:9px;background:#f6f8fc;color:#273a56;font-family:Calibri,"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.6;padding:20px;margin:12px 0}.prompt-dialog footer{display:flex;gap:10px;flex-wrap:wrap}.lab.immersive .lab-tools{position:relative}.lab-continue{position:fixed;z-index:25;bottom:22px;right:32px;box-shadow:0 8px 30px #15243c40}
.projector .slide-inner{padding:36px 48px}.projector .cover .slide-inner{padding:0}.projector .slide-inner h1{font-size:clamp(34px,3.8vw,56px);margin-bottom:20px}.projector .slide-inner>.eyebrow{margin-bottom:17px}.projector .prompt-preview{max-height:110px;padding:16px 20px;font-size:15px;margin-bottom:18px}.projector .prompt-page .slide-inner{justify-content:center}.projector .prompt-page .slide-bullets{gap:10px;margin-bottom:18px}.projector .prompt-page .slide-bullets li{font-size:19px}.projector .prompt-page .task-box{font-size:19px;margin-bottom:18px}.projector .prompt-page .slide-body{font-size:19px;margin-bottom:18px}.projector .source-links{margin-top:16px}.projector .lab .slide-inner{padding:22px 28px 14px}.projector .lab h1{font-size:29px;margin-bottom:10px}.projector .lab-viewport{height:calc(100dvh - 250px)}.projector .slide-body.formula{font-size:38px}.projector .join-panel{padding:18px}.projector .join-code{font-size:29px;margin:6px 0 12px}
@media(min-width:1500px){.presenter-layout{grid-template-columns:minmax(0,1fr) 350px}.presenter-layout .slide-inner{min-height:620px}.presenter-layout .lab .slide-inner{min-height:0}.presenter-layout .cover .slide-inner,.presenter-layout .cover-image{min-height:620px}}
@media(max-width:1150px){.presenter-layout{grid-template-columns:minmax(0,1fr) 285px;padding:18px;gap:15px}.presenter-layout .slide-inner{padding:35px;min-height:500px}.presenter-layout .cover .slide-inner{padding:0;grid-template-columns:1fr .7fr}.presenter-layout .cover-copy{padding:42px 26px 42px 35px}.presenter-layout .cover h1{font-size:45px}.presenter-layout .cover-image{min-height:520px}.image-split .slide-inner{gap:24px;padding:32px}.split-copy .slide-body{font-size:19px}.split-image{height:350px}.presenter-layout .image-split .slide-inner{grid-template-columns:1fr}.presenter-layout .split-image{height:190px;order:-1}.presenter-layout .split-image img{object-position:center 58%}.join-layout{gap:20px}.join-panel canvas{width:170px;height:170px}.presenter-layout .join-layout{grid-template-columns:1fr}.presenter-layout .join-panel{display:none}.prompt-summary{grid-template-columns:1fr}.preview-image{max-height:200px}.participant-layout{padding:20px}.lab-tools .button{font-size:12px}}
@media(max-width:800px){.topbar{height:58px;padding:0 18px}.brand-label{display:none}.top-actions{gap:10px}.role-label{display:none}.top-actions .button{padding:7px 10px;font-size:12px;min-height:34px}.presenter-layout{grid-template-columns:1fr;padding:14px}.presenter-sidebar{display:grid;grid-template-columns:1fr 1fr}.notes-panel{grid-row:span 2}.participant-layout{padding:16px 13px}.slide-inner{min-height:480px;padding:32px 27px}.slide-inner h1{font-size:36px}.slide-body{font-size:20px}.slide-bullets li{font-size:19px}.task-box{font-size:19px}.cover .slide-inner{min-height:560px;grid-template-columns:1fr .7fr}.cover-copy{padding:40px 14px 40px 32px}.cover h1{font-size:47px}.cover h2{font-size:22px}.cover-image{min-height:560px}.image-split .slide-inner{grid-template-columns:1fr;gap:24px}.split-image{height:260px;order:-1}.split-image img{object-position:center 58%}.join-layout{grid-template-columns:1fr}.join-panel{max-width:360px}.join-panel canvas{width:180px;height:180px}.lab .slide-inner{padding:20px 16px 14px}.lab h1{font-size:26px}.lab-header{display:block}.lab-tools{padding:0;margin-bottom:12px}.lab-viewport{height:68dvh;min-height:480px}.lab.immersive{inset:6px}.lab.immersive .lab-header{display:flex}.lab.immersive .lab-header h1{font-size:20px}.lab.immersive .lab-tools{padding:0;flex-wrap:wrap;justify-content:end}.lab.immersive .task-box{display:none}.prompt-preview{max-height:180px;font-size:15px}.closing h1{font-size:49px}.login-page{grid-template-columns:1fr}.login-intro{padding:30px 30px 35px;min-height:310px}.login-intro .brand-symbol{position:static}.login-intro .eyebrow{margin-top:35px}.login-intro h1{font-size:42px;margin:20px 0 10px}.login-intro p{font-size:17px;margin:0}.login-form-wrap{padding:35px 26px}.login-form label{margin-top:22px}}
@media(max-width:520px){.connection{font-size:11px}.slide-meta{font-size:11px}.slide-inner{padding:30px 23px;min-height:440px}.slide-inner h1{font-size:33px}.slide-inner>.eyebrow{font-size:10px;margin-bottom:17px}.slide-body{font-size:19px}.cover .slide-inner{display:flex;flex-direction:column;min-height:0}.cover-copy{padding:36px 26px 28px}.cover .eyebrow{margin-bottom:22px}.cover h1{font-size:49px}.cover h2{font-size:22px}.cover-image{height:220px;min-height:220px;width:100%}.cover-image img{object-position:60% 50%}.cover-image:after{background:linear-gradient(180deg,#13233c,transparent 50%)}.slide-actions{display:grid;grid-template-columns:1fr}.slide-actions .button{width:100%;font-size:14px}.split-copy .slide-body{font-size:19px}.split-image{height:220px}.presenter-sidebar{display:flex}.presenter-layout .cover h1{font-size:43px}.presenter-layout .cover .slide-inner{display:flex}.presenter-layout .cover-image{min-height:180px;height:180px}.lab .slide-inner{padding:18px 12px 12px}.lab h1{font-size:24px}.lab .task-box{font-size:14px}.lab-tools{flex-wrap:wrap}.lab-viewport{min-height:470px;height:68dvh}.prompt-dialog{padding:22px}.prompt-dialog h2{font-size:25px}.prompt-dialog textarea{font-size:16px;padding:13px}.prompt-summary{gap:16px}.preview-image{max-height:170px}.closing .slide-inner{min-height:550px}.closing h1{font-size:44px}.closing .slide-body{font-size:20px}.participant-hint{font-size:11px}.lab-continue{bottom:16px;right:16px}.lab.immersive .lab-header{display:block}.lab.immersive .lab-tools{justify-content:start}.presenter-layout .join-panel{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Image origin remains visible in every viewing mode. */
.cover-image,.split-image,.preview-image{margin:0;position:relative}.image-credit{position:absolute;right:12px;bottom:12px;z-index:2;background:#101f36df;color:#fff;font-size:12px;font-weight:550;line-height:1.4;padding:5px 9px;border-radius:5px;letter-spacing:.015em}.closing .closing-credits{font-size:12px;line-height:1.5;color:#a6b8d3;margin:24px 0 0;max-width:900px}
/* The outer slide fits the available screen; only the learning area scrolls. */
.lab-fit .slide-inner,.projector .lab.lab-fit .slide-inner{display:flex;flex-direction:column;min-height:0;height:100%;padding:16px 20px 14px}.lab-fit .lab-header{flex:none;align-items:center;gap:16px}.lab-fit .lab-header>div:first-child{min-width:0}.lab-fit .lab-header h1,.projector .lab-fit h1{font-size:24px;line-height:1.15;margin:6px 0 4px}.lab-fit .lab-header .eyebrow{font-size:10px}.lab-fit .lab-tools{padding:0;flex-shrink:0}.lab-fit .lab-tools .button{font-size:12px;min-height:34px;padding:6px 10px}.lab-instructions{flex:none;position:relative;margin:0;color:var(--muted);font-size:13px;line-height:1.45}.lab-instructions summary{cursor:pointer;width:fit-content;min-height:34px;padding:7px 10px;border:1px solid var(--line);border-radius:9px;background:white;white-space:nowrap;font-size:12px;font-weight:650}.lab-instructions p{position:absolute;right:0;top:calc(100% + 7px);width:min(440px,calc(100vw - 80px));max-height:230px;overflow:auto;z-index:10;margin:0;padding:16px 18px;background:white;color:var(--ink);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 35px #15243c22;font-size:15px}.lab-fit .lab-header .eyebrow{display:none}.lab-fit .lab-header{margin-bottom:12px}.lab-fit .lab-viewport,.projector .lab-fit .lab-viewport{flex:1 1 0;height:auto;min-height:0;overflow:hidden}.lab-fit.immersive{height:auto!important}.lab-fit.immersive .slide-inner{padding:14px}.lab-fit.immersive .lab-viewport{min-height:0}
@media(max-width:800px){.lab-fit .lab-header{display:flex;align-items:center}.lab-fit .lab-header h1{font-size:21px}.lab-fit .lab-tools{margin:0;justify-content:flex-end;flex-wrap:wrap;max-width:200px}.lab-fit .lab-tools .button{font-size:11px;min-height:32px;padding:6px 8px}.lab-fit .slide-inner{padding:12px}.lab-fit .lab-instructions{font-size:12px;margin:6px 0 8px}}
@media(max-width:520px){.lab-fit .lab-header{display:block}.lab-fit .lab-header h1{font-size:22px}.lab-fit .lab-tools{max-width:none;justify-content:flex-start;margin-top:8px}.lab-fit .lab-header .eyebrow{font-size:9px}.image-credit{font-size:11px;right:9px;bottom:9px}.closing .closing-credits{font-size:11px}}
@media print{.topbar,.presenter-sidebar,.participant-hint,.slide-actions,.lab-tools,.slide-meta,.toast{display:none!important}.participant-layout,.presenter-layout{display:block;padding:0}.slide-frame{box-shadow:none;border:0}.slide-inner{min-height:0!important}.cover-image{min-height:0!important}.slide-inner h1{font-size:32pt}.slide-body,.slide-bullets li,.task-box{font-size:15pt}.cover .slide-inner,.closing .slide-inner{background:white;color:black}.cover h2,.cover p,.closing .slide-body,.closing .task-box{color:black}.lab-viewport{height:700px}}