:root {
  --navy:#1b3a63; --ink:#10233c; --orange:#ff6b35; --orange-dark:#c9451a;
  --blue:#3d7fca; --blue-soft:#84b7ec; --cream:#f7f1e7; --paper:#fffdf8;
  --muted:#637285; --line:rgba(27,58,99,.16); --ok:#1e7e54; --ok-bg:#e3f5ec;
  --bad:#c0392b; --bad-bg:#fbe7e4; --wait:#b06a00; --wait-bg:#fff4e0;
  --shadow:0 18px 48px rgba(27,58,99,.14);
}
*{box-sizing:border-box} html,body{margin:0;min-height:100%;background:var(--cream);color:var(--ink)}
[hidden]{display:none!important}
body{font-family:Calibri,"Segoe UI",system-ui,Arial,sans-serif;font-size:16px;line-height:1.45;overflow-x:hidden}
button,a,input{font:inherit} button{touch-action:manipulation} button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(255,107,53,.48);outline-offset:3px}
.skip-link{position:fixed;z-index:99;left:12px;top:-80px;background:var(--navy);color:#fff;padding:10px 16px;border-radius:10px}.skip-link:focus{top:12px}
.appbar{height:72px;padding:10px clamp(12px,3vw,32px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(255,253,248,.96)}
.brand{display:flex;align-items:center;gap:10px;color:var(--navy);text-decoration:none}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--navy);color:#fff;font:bold 22px "Trebuchet MS",Calibri,sans-serif;border:3px solid var(--orange)}
.brand strong,.brand small{display:block}.brand strong{font:700 17px "Trebuchet MS",Calibri,sans-serif}.brand small{font-size:12px;color:var(--muted)}
.appbar-actions,.lesson-tools,.home-actions{display:flex;align-items:center;gap:8px}.mode-badge,.small-button,.tool-button,.speed-control{border:1px solid var(--line);background:var(--paper);color:var(--navy);border-radius:999px;font-weight:700}
.mode-badge{padding:7px 12px;font-size:12px}.small-button,.tool-button{padding:8px 12px;cursor:pointer}.exit-button{border-color:rgba(201,69,26,.35);color:var(--orange-dark)}
.home{width:min(1180px,calc(100% - 32px));min-height:calc(100dvh - 72px);margin:auto;padding:clamp(18px,4vh,44px) 0 20px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:clamp(18px,4vw,54px);align-content:center}
.home-copy{align-self:center}.eyebrow{margin:0 0 7px;color:var(--orange-dark);font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
h1,h2,h3{font-family:"Trebuchet MS",Calibri,Arial,sans-serif;color:var(--navy);margin:0;line-height:1.03}
h1{font-size:clamp(42px,5.4vw,76px);letter-spacing:-.015em}h1 span{color:var(--orange-dark)}
.home-intro{max-width:660px;font-size:clamp(17px,1.7vw,21px);line-height:1.55;margin:18px 0}.primary-button,.nav-button{border:0;border-radius:999px;background:var(--navy);color:#fff;padding:12px 20px;font-weight:800;cursor:pointer}.primary-button{font-size:17px}.home-actions>span{color:var(--muted);font-size:14px}
.home-visual{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden;align-self:center}.home-visual img{display:block;width:100%;height:min(36vh,340px);object-fit:cover}.home-visual figcaption{padding:12px 16px;color:var(--muted);font-weight:700}
.dossier-grid{grid-column:1/-1;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}.dossier-button{display:flex;align-items:center;gap:9px;min-height:66px;text-align:left;border:1px solid var(--line);border-radius:14px;background:var(--paper);color:var(--navy);padding:10px;cursor:pointer}.dossier-button b{display:grid;place-items:center;flex:0 0 30px;height:30px;border-radius:50%;background:var(--navy);color:#fff}.dossier-button span{font-weight:800}.dossier-button small{display:block;color:var(--muted);font-weight:400}.home-note{grid-column:1/-1;margin:0;padding:10px 14px;border:1px dashed var(--orange-dark);border-radius:12px;background:var(--paper)}
body.course-running{height:100dvh;overflow:hidden}.course-shell{height:calc(100dvh - 72px);padding:10px;display:grid;grid-template-columns:156px minmax(0,1fr);gap:10px}
.course-rail,.lesson-card{min-height:0;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow)}.course-rail{border-radius:18px;padding:12px 9px;display:flex;flex-direction:column}.rail-heading{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:11px}.rail-heading strong{color:var(--navy)}
.stepper{display:grid;gap:6px;margin:12px 0 auto}.step-button{display:grid;grid-template-columns:26px 1fr;gap:6px;align-items:center;border:0;background:transparent;color:var(--muted);text-align:left;padding:5px 3px;border-radius:9px;cursor:pointer}.step-button b{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;border:1px solid var(--line);background:var(--paper)}.step-button.active{background:#eef5fc;color:var(--navy);font-weight:800}.step-button.active b{background:var(--blue);border-color:var(--blue);color:#fff}.step-button.done b{border:3px double var(--ok);color:var(--ok)}
.progress-track{height:7px;border-radius:999px;background:#e6edf4;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--orange);width:0}.course-rail>p{margin:7px 0 0;color:var(--muted);font-size:10px}
.lesson-card{border-radius:20px;overflow:hidden;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto}.lesson-header{grid-row:1;padding:10px 14px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.lesson-heading{min-width:0}.lesson-heading h2{font-size:clamp(25px,3.3vw,42px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-tools{flex:0 0 auto}.tool-button{font-size:12px}.speed-control{display:flex;align-items:center;overflow:hidden;font-size:11px}.speed-control button{border:0;background:transparent;color:var(--navy);padding:8px;cursor:pointer}.speed-control span{min-width:42px;text-align:center}.voice-button{background:var(--navy);color:#fff}
.lesson-content{grid-row:3;min-height:0;padding:10px 14px;display:grid;grid-template-columns:minmax(220px,.72fr) minmax(0,1.6fr);gap:12px}.lesson-copy{min-height:0;overflow:hidden;display:flex;flex-direction:column;justify-content:center}.lesson-copy>p:first-child{font-size:clamp(14px,1.45vw,19px);line-height:1.48;margin:0}.action-prompt{margin:12px 0 0;padding:8px 10px;border-left:4px solid var(--orange-dark);background:#fff8f1;border-radius:0 9px 9px 0;font-weight:800;color:var(--navy)}
.activity-zone{min-height:0;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fdfbf5;padding:12px;display:grid;place-items:center}.activity-zone>*{max-width:100%}
.lesson-footer{grid-row:2;padding:8px 14px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;background:var(--paper)}.nav-button{padding:9px 16px}.nav-button.secondary{background:var(--paper);color:var(--navy);border:1px solid var(--line)}.nav-button:disabled{opacity:.4;cursor:not-allowed}.reference-box{text-align:center;color:var(--muted);font-size:11px}.reference-box strong{color:var(--navy)}.status-message{grid-row:4;min-height:18px;margin:0;padding:0 14px 4px;text-align:center;color:var(--ok);font-weight:800;font-size:12px}
.panel{width:100%;height:100%;min-height:0;display:grid;align-content:center;gap:10px}.panel-title{text-align:center;color:var(--navy);font:bold clamp(17px,2vw,24px) "Trebuchet MS",Calibri,sans-serif}.cards{display:grid;grid-template-columns:repeat(var(--cols,3),minmax(0,1fr));gap:8px}.choice,.check-card,.sequence-step{border:2px solid var(--line);background:var(--paper);color:var(--ink);border-radius:12px;padding:10px;text-align:left;cursor:pointer}.choice strong,.check-card strong{display:block;color:var(--navy);font-size:15px}.choice small,.check-card small{display:block;color:var(--muted);margin-top:4px}.choice.good{border:4px double var(--ok);background:var(--ok-bg)}.choice.bad{border:3px dashed var(--bad);background:var(--bad-bg)}.choice.selected:not(.good):not(.bad){border-color:var(--blue);background:#edf5fd}.feedback{min-height:42px;padding:8px 10px;border-left:5px solid var(--blue);border-radius:0 10px 10px 0;background:#eef5fc}.feedback.good{border-left-style:double;border-left-color:var(--ok);background:var(--ok-bg)}.feedback.bad{border-left-style:dashed;border-left-color:var(--bad);background:var(--bad-bg)}
.cause-scene{width:100%;display:grid;grid-template-columns:minmax(200px,1.35fr) minmax(150px,.65fr);gap:14px;align-items:center}.coil{position:relative;height:190px;border:8px solid #7890a4;border-radius:16px;background:repeating-linear-gradient(90deg,#d7e5ec 0 5px,#869daa 5px 8px);overflow:hidden}.coil::after{content:"";position:absolute;inset:0;background:rgba(80,78,70,var(--dirt,.05));transition:background .18s}.fan{position:absolute;z-index:2;left:50%;top:50%;width:88px;height:88px;transform:translate(-50%,-50%);border:8px solid var(--navy);border-radius:50%;background:var(--paper)}.fan::before,.fan::after{content:"";position:absolute;left:34px;top:5px;width:13px;height:70px;border-radius:999px;background:var(--blue);transform:rotate(45deg)}.fan::after{transform:rotate(-45deg)}.fan.off::before,.fan.off::after{background:var(--muted)}.air-arrows{display:flex;justify-content:space-around;color:var(--blue);font-size:31px;font-weight:900;opacity:var(--air,1)}
.gauge-wrap{text-align:center}.gauge{position:relative;margin:auto;width:160px;height:82px;overflow:hidden}.gauge::before{content:"";position:absolute;inset:0 0 -80px;border:18px solid #dfe7ec;border-top-color:var(--ok);border-right-color:var(--bad);border-left-color:var(--blue);border-radius:50%}.needle{position:absolute;left:80px;bottom:0;width:64px;height:4px;background:var(--navy);transform-origin:left center;transform:rotate(var(--needle,-150deg));transition:transform .2s}.needle::after{content:"";position:absolute;left:-6px;top:-5px;width:14px;height:14px;border-radius:50%;background:var(--navy)}.state-word{display:inline-block;margin-top:8px;padding:6px 11px;border-radius:999px;border:2px solid var(--line);font-weight:900}.state-word.warn{border:3px dotted var(--wait);color:#7b4a00;background:var(--wait-bg)}.state-word.danger{border:3px dashed var(--bad);color:var(--bad);background:var(--bad-bg)}
.range-row{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center}.range-row input{width:100%;accent-color:var(--orange-dark)}.big-label{font:800 clamp(18px,2.2vw,28px) "Trebuchet MS",Calibri,sans-serif;color:var(--navy);text-align:center}.diagram{width:100%;display:grid;gap:10px}.flow-row{display:flex;align-items:center;justify-content:center;gap:7px;flex-wrap:wrap}.flow-box{padding:9px 12px;border:2px solid var(--navy);border-radius:12px;background:var(--paper);font-weight:800;color:var(--navy)}.flow-arrow{color:var(--orange-dark);font-weight:900}.photo-card{width:100%;height:100%;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:center}.photo-card img{width:100%;max-height:260px;object-fit:contain;border-radius:14px;border:1px solid var(--line)}.hotspot-list{display:grid;gap:7px}.hotspot-list button{border:2px solid var(--line);background:var(--paper);color:var(--navy);border-radius:10px;padding:9px;text-align:left;font-weight:800;cursor:pointer}.hotspot-list button.seen{border:4px double var(--ok);background:var(--ok-bg)}
.sequence{display:flex;align-items:stretch;gap:5px}.sequence-step{flex:1;min-width:0;padding-inline:6px;overflow-wrap:anywhere;text-align:center;cursor:default}.sequence-step.active{border-color:var(--blue);background:#edf5fd}.sequence-step.done{border:4px double var(--ok);background:var(--ok-bg)}.sequence-arrow{flex:0 0 auto;align-self:center;color:var(--orange-dark);font-weight:900}.report-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:100%}.report-grid label{font-weight:800;color:var(--navy)}.report-grid input,.report-grid textarea{display:block;width:100%;margin-top:4px;border:2px solid var(--line);border-radius:9px;padding:8px;background:#fff}.report-grid textarea{resize:none;height:66px}.score{display:grid;place-items:center;text-align:center}.score-number{font:900 clamp(52px,8vw,92px) "Trebuchet MS",Calibri,sans-serif;color:var(--navy)}
.print-book{display:none}
html.lisibilite-agrandie body.course-running{height:auto;min-height:100dvh;overflow-x:hidden;overflow-y:auto}html.lisibilite-agrandie body.course-running .appbar{position:sticky;top:0;z-index:30}html.lisibilite-agrandie .course-shell{height:auto;min-height:calc(100dvh - 72px);align-items:start}html.lisibilite-agrandie .course-rail{position:sticky;top:82px;max-height:calc(100dvh - 92px)}html.lisibilite-agrandie .lesson-card{min-height:calc(100dvh - 92px);overflow:visible}html.lisibilite-agrandie .lesson-footer{position:sticky;top:72px;z-index:20;box-shadow:0 4px 10px rgba(27,58,99,.10)}html.lisibilite-agrandie .lesson-content{grid-template-columns:1fr;overflow:visible}html.lisibilite-agrandie .lesson-copy,html.lisibilite-agrandie .activity-zone{overflow:visible}html.lisibilite-agrandie .activity-zone{min-height:360px}
@media (max-width:900px){.home{grid-template-columns:1fr}.home-visual{display:none}.dossier-grid{grid-template-columns:repeat(3,1fr)}.lesson-content{grid-template-columns:minmax(190px,.75fr) minmax(0,1.45fr)}}
@media (max-width:650px){.appbar{height:54px;padding:6px 8px}.brand-mark{width:34px;height:34px;font-size:18px}.brand small{display:none}.mode-badge{display:none}.small-button{padding:6px 9px}.home{min-height:calc(100dvh - 54px);width:calc(100% - 16px);padding:14px 0;display:block}.home h1{font-size:38px}.home-intro{font-size:16px}.home-actions{align-items:flex-start;flex-direction:column}.dossier-grid{margin-top:14px;grid-template-columns:1fr 1fr}.dossier-button{min-height:58px}.home-note{margin-top:12px;font-size:13px}body.course-running{height:100dvh}.course-shell{height:calc(100dvh - 54px);padding:4px;grid-template-columns:1fr;grid-template-rows:31px minmax(0,1fr);gap:4px}.course-rail{border-radius:10px;padding:3px 5px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:5px}.rail-heading{display:block}.rail-heading span{display:none}.stepper{display:flex;margin:0;justify-content:space-around;gap:1px}.step-button{display:block;padding:0}.step-button span{display:none}.step-button b{width:23px;height:23px;font-size:10px}.progress-track{display:none}.course-rail>p{display:none}.lesson-card{border-radius:12px}.lesson-header{padding:5px 7px;align-items:center}.lesson-heading .eyebrow{font-size:8px;margin-bottom:2px}.lesson-heading h2{font-size:clamp(18px,5.5vw,23px)}.lesson-tools{gap:3px}.tool-button{padding:5px 7px;font-size:10px}.tool-label,.voice-button span:last-child{display:none}.speed-control{display:none}.lesson-content{padding:5px 7px;grid-template-columns:minmax(120px,.68fr) minmax(0,1.5fr);gap:6px}.lesson-copy>p:first-child{font-size:11px;line-height:1.25}.action-prompt{font-size:10px;margin-top:5px;padding:5px 6px}.activity-zone{padding:6px;border-radius:10px}.lesson-footer{padding:4px 7px;grid-template-columns:auto 1fr auto}.nav-button{padding:6px 9px;font-size:10px}.reference-box{font-size:8px}.status-message{min-height:12px;font-size:9px;padding-bottom:1px}.panel{gap:5px}.cards{gap:4px}.choice,.check-card,.sequence-step{padding:6px;border-radius:8px;font-size:10px}.choice strong,.check-card strong{font-size:11px}.choice small,.check-card small{font-size:9px}.feedback{font-size:10px;min-height:30px;padding:5px}.cause-scene{grid-template-columns:1.25fr .75fr;gap:6px}.coil{height:112px;border-width:5px}.fan{width:55px;height:55px;border-width:5px}.fan::before,.fan::after{left:21px;top:3px;width:9px;height:42px}.gauge{width:105px;height:55px}.gauge::before{inset:0 0 -54px;border-width:12px}.needle{left:52px;width:42px}.state-word{font-size:9px;padding:3px 6px}.air-arrows{font-size:18px}.photo-card{gap:5px}.photo-card img{max-height:130px}.hotspot-list{gap:3px}.hotspot-list button{font-size:9px;padding:5px}.flow-row{gap:3px}.flow-box{font-size:9px;padding:5px}.sequence{gap:2px}.sequence-step{font-size:8px}.report-grid{gap:4px}.report-grid label{font-size:9px}.report-grid input,.report-grid textarea{padding:4px;font-size:9px}.report-grid textarea{height:40px}html.lisibilite-agrandie .course-shell{height:auto;grid-template-rows:auto auto}html.lisibilite-agrandie .course-rail{position:static;max-height:none}html.lisibilite-agrandie .lesson-footer{top:54px}html.lisibilite-agrandie .lesson-content{grid-template-columns:1fr}html.lisibilite-agrandie .activity-zone{min-height:300px}html.lisibilite-agrandie .appbar .exit-button{display:none}}
@media (max-width:380px){.lesson-copy>p:first-child{font-size:10px}.action-prompt{font-size:9px}.home .dossier-grid{display:none}.lesson-content{grid-template-columns:112px minmax(0,1fr)}.brand strong{font-size:14px}}