:root{color-scheme:light;--ink:#20263a;--muted:#586076;--accent:#6542b2;--paper:#fff;--line:#dcdbe7;--soft:#f1ecfb;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#f6f5f1;font-size:16px}*{box-sizing:border-box}body{margin:0}a{color:#573599;text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,input,select{min-height:46px}button{border:1px solid #b8b3c8;border-radius:9px;padding:11px 18px;background:#fff;color:var(--ink);font-weight:650;cursor:pointer}button:hover{background:var(--soft);border-color:var(--accent)}button:disabled{opacity:.58;cursor:wait}button.primary{color:white;background:var(--accent);border-color:var(--accent);padding:15px 23px}button.primary:hover{background:#50328e}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #946616;outline-offset:4px}input:not([type=checkbox]):not([type=radio]),select{display:block;border:1px solid #aaa7b9;border-radius:7px;background:white;padding:10px 12px;width:100%;color:var(--ink)}label{display:block;font-size:.92rem;font-weight:600}fieldset{border:0;padding:0;margin:0}legend{padding:0;font-weight:650}.small{font-size:.85rem;line-height:1.65;color:var(--muted)}.skip{position:fixed;left:15px;top:-80px;z-index:90;background:white;padding:12px}.skip:focus{top:12px}.prep-header{min-height:82px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:20px max(24px,calc((100vw - 1220px)/2));gap:24px;background:#fcfbf8}.brand{display:flex;align-items:center;gap:9px;color:#20263a;text-decoration:none;font-size:1.18rem;font-weight:780}.prep-header nav{display:flex;gap:25px;font-size:.88rem}.prep-header nav a{color:#474757;text-decoration:none}main{max-width:1220px;margin:0 auto;padding:44px 24px 0}.prep-intro{max-width:820px;margin-bottom:23px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.73rem;font-weight:760;color:var(--accent);margin:0 0 12px}h1{font-size:clamp(2rem,4vw,3rem);letter-spacing:-.045em;line-height:1.15;margin:0 0 18px;font-weight:780}h2{font-size:1.55rem;letter-spacing:-.025em;line-height:1.3;margin:10px 0 22px}h3{font-size:1.08rem;line-height:1.5}.lead{font-size:1.1rem;line-height:1.7;color:var(--muted);margin:0}.entry-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(290px,1fr);gap:42px;margin-top:24px}.sheet{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 8px 32px #24203705}.section-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.tag{font-size:.72rem;color:var(--muted);white-space:nowrap}.two{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.two label>select{margin-top:8px}.scope{font-size:.86rem;color:var(--muted);background:#f8f7fb;padding:12px 14px;border-radius:7px}.notions{margin:28px 0}.notions>p{font-size:.85rem;color:var(--muted);margin:7px 0 15px}.check{display:flex;align-items:center;gap:12px;min-height:44px;font-weight:500;cursor:pointer}.check input{width:19px;height:19px;min-height:19px;accent-color:var(--accent);flex-shrink:0}.quiet{font-size:.8rem;line-height:1.5}.budget legend{font-size:.9rem;margin-bottom:10px}.segments{display:flex;gap:5px}.segments label{flex:1;position:relative}.segments input{position:absolute;opacity:0;width:100%;height:100%;margin:0}.segments span{display:block;padding:12px 8px;text-align:center;border:1px solid var(--line);border-radius:7px;font-size:.85rem}.segments input:checked+span{border-color:var(--accent);background:var(--soft);color:#4d2b91}.segments input:focus-visible+span{outline:3px solid #946616;outline-offset:3px}#setup>.primary{width:100%;display:flex;justify-content:space-between;margin-top:22px}.entry-note{padding:10px 6px}.entry-note h2{font-size:2.1rem;line-height:1.22;letter-spacing:-.04em;margin-bottom:30px}.entry-note ol{padding:0;list-style:none;counter-reset:entry}.entry-note li{counter-increment:entry;display:grid;grid-template-columns:31px 1fr;column-gap:14px;margin:23px 0}.entry-note li:before{content:counter(entry);grid-row:span 2;border:1px solid #bfb3d6;background:var(--soft);color:var(--accent);border-radius:50%;width:30px;height:30px;display:grid;place-items:center;font-size:.8rem;font-weight:700}.entry-note li span{color:var(--muted);font-size:.87rem;line-height:1.6;margin-top:5px}.math-example{margin:35px 0 22px;border-top:1px solid #cfc9dc;padding-top:17px}.math-example>p:first-child{font-size:.75rem;color:var(--muted)}.math-example strong{font-size:1.5rem;font-family:Georgia,serif}.math-example p{line-height:1.7;font-size:.9rem}.math-example a{font-size:.85rem}.session-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:28px 0}.session-heading h2{margin:5px 0}.session-heading>button{font-size:.8rem}.session-heading p{color:var(--muted);font-size:.9rem}.work-grid{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:32px}.work-sheet{min-height:390px;padding:36px}.work-sheet h3{font-size:1.22rem;line-height:1.75;font-weight:580;margin:24px 0}.reason{font-size:.9rem;background:var(--soft);border-left:3px solid var(--accent);padding:13px 17px;line-height:1.65}.question-fields{display:grid;gap:18px;margin:28px 0;max-width:590px}.question-fields>label{display:grid;grid-template-columns:minmax(160px,1fr) minmax(100px,1fr);align-items:center;gap:14px;line-height:1.5}.question-fields input{max-width:240px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:25px}.actions button{font-size:.9rem}.hint{border:1px solid #dec99b;background:#fffbef;border-radius:8px;padding:16px;line-height:1.7}.feedback{border-top:1px solid var(--line);padding:20px 0 0;margin-top:28px;line-height:1.8}.feedback strong{color:#36583c}.resources{display:flex;flex-wrap:wrap;gap:20px;margin-top:30px;font-size:.88rem}.session-aside{border-left:1px solid var(--line);padding:8px 0 0 22px}.session-aside h3{font-size:.88rem}.session-aside ol{padding-left:20px}.session-aside li{font-size:.8rem;line-height:1.7;padding:8px 0 8px 7px;color:var(--muted)}.session-aside li[aria-current=step]{font-weight:750;color:var(--accent)}.session-aside button{font-size:.8rem;width:100%}.session-aside .small{font-size:.77rem}.prose{font-size:1.05rem;line-height:1.9;max-width:68ch}.prose p{margin:24px 0}.prose strong{font-weight:650}.summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:28px 0}.summary-card{border:1px solid var(--line);border-radius:10px;padding:18px}.summary-card h3{margin:0 0 12px}.summary-card p{line-height:1.6;font-size:.88rem}.summary-card .small{font-size:.78rem}.next-action{background:var(--soft);border-radius:10px;padding:24px;margin:30px 0;line-height:1.7}.next-action h3{font-size:1.25rem}.schedule{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;margin:30px 0}.schedule summary{font-weight:650;cursor:pointer;min-height:30px}.schedule form{max-width:650px;padding:22px 0}.schedule input[type=date]{max-width:240px;margin-top:6px}.slot{display:flex;align-items:end;gap:10px;margin:15px 0}.slot label{flex:1}.secondary button{font-size:.8rem}.provenance{max-width:850px;margin:55px 0 35px;line-height:1.8;color:var(--muted);font-size:.9rem}.provenance h2{font-size:1.1rem;color:var(--ink)}footer{border-top:1px solid var(--line);padding:24px;display:flex;justify-content:center;gap:30px;font-size:.8rem}.paused{padding:40px}.error{background:#fff1ee;border:1px solid #cb948c;color:#812f23;padding:16px;border-radius:8px;line-height:1.6}#technical-status{font-size:.85rem;line-height:1.6;margin:8px 0;min-height:22px;color:var(--muted)}#technical-status:empty{visibility:hidden}#saved{margin:25px 0;padding:20px;background:#ebe7f3;border-radius:12px}#saved h2{font-size:1.1rem}#saved button{margin:5px}.past-date{border-left:4px solid #9a5f12}details p{line-height:1.7}[hidden]{display:none!important}@media(max-width:900px){.entry-grid{gap:25px;grid-template-columns:minmax(0,1.5fr) minmax(220px,1fr)}.sheet{padding:24px}.two{gap:14px}.work-grid{grid-template-columns:minmax(0,1fr) 210px;gap:18px}.prep-header nav{gap:18px}}@media(max-width:700px){main{padding:28px 18px 0}.prep-header{padding:16px 18px;align-items:start;min-height:72px}.brand{font-size:1.02rem}.brand img{width:28px;height:28px}.prep-header nav{gap:12px;flex-wrap:wrap;justify-content:flex-end;max-width:190px;font-size:.75rem}.prep-intro{margin-bottom:25px}h1{font-size:2.15rem}.lead{font-size:1rem;line-height:1.65}.entry-grid,.work-grid{grid-template-columns:1fr;gap:24px}.sheet{padding:22px 18px;border-radius:12px}h2{font-size:1.35rem}.entry-note{padding:14px 5px}.entry-note h2{font-size:1.8rem}.two{grid-template-columns:1fr;margin:20px 0}.segments span{font-size:.95rem}.session-heading{display:block}.session-heading>button{margin-bottom:10px}.question-fields>label{grid-template-columns:1fr;gap:8px}.question-fields input{max-width:none}.session-aside{border:1px solid var(--line);border-radius:10px;padding:18px}.session-aside ol{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.summary-grid{grid-template-columns:1fr}.next-action{padding:20px}.actions>*{width:100%}.slot{flex-wrap:wrap}.slot label{min-width:100px}.prose{font-size:1rem}.work-sheet h3{font-size:1.1rem}}@media(prefers-reduced-motion:no-preference){button{transition:background .12s,border-color .12s}.feedback{animation:appear .17s ease-out}@keyframes appear{from{opacity:.3;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}}

#work-title,#summary-title{scroll-margin-top:24px}
#course-access-dialog{max-width:560px;width:calc(100% - 36px);padding:28px;border:1px solid var(--line);border-radius:14px;color:var(--ink);background:var(--paper)}#course-access-dialog::backdrop{background:#20263a80}#course-access-dialog h2{font-size:1.4rem}#course-access-dialog p{line-height:1.75}#course-access-dialog .actions{align-items:stretch}#course-access-dialog form{margin:0}#course-access-dialog .actions>*{flex:1}#course-access-dialog button{height:100%;width:100%}.resources [data-course-locked]{font-weight:600}
.prep-header nav{align-items:center}.prep-subscribe,.prep-header nav .prep-subscribe{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:12px 18px;background:var(--accent);color:#fff;border:1px solid var(--accent);border-radius:9px;font-weight:700;text-decoration:none;line-height:1.4}.prep-subscribe:hover,.prep-header nav .prep-subscribe:hover{background:#50328e;color:#fff}.subscription-promo{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;margin:42px 0;padding:28px 30px;border:1px solid #d4c7ed;border-left:4px solid var(--accent);border-radius:14px;background:var(--soft)}.subscription-promo h2{margin:4px 0 12px}.subscription-promo p:not(.eyebrow){max-width:68ch;margin:0;line-height:1.75;color:var(--muted)}.subscription-promo>a{font-size:.9rem}footer{flex-wrap:wrap;align-items:center;gap:16px 30px;line-height:1.6}@media(max-width:700px){.prep-header nav .prep-subscribe{padding:10px 13px}.subscription-promo{grid-template-columns:1fr;padding:24px 20px;gap:18px}.subscription-promo>a{width:100%}}
.coverage{font-size:.83rem;line-height:1.65;color:var(--muted);margin:20px 0}.coverage summary{min-height:44px;cursor:pointer;font-weight:600}.coverage ul{padding-left:20px}.coverage li{margin:10px 0}.local-continue{margin:24px 0}
/* Les intitulés restent complets et les fractions réutilisent le MathML natif. */
select{max-width:100%;min-width:0;text-overflow:ellipsis} .setup>form>label{margin:20px 0 8px}.question-fields label{min-width:0}.work-sheet math{font-size:1.08em}.work-sheet mfrac{font-size:1.12em}.work-sheet h3{overflow-wrap:anywhere}.summary-card{min-width:0}.math-expression{white-space:normal}.math-example strong{font-variant-numeric:tabular-nums}

#course-excerpt-dialog{max-width:760px;width:calc(100% - 36px);max-height:calc(100vh - 36px);overflow:auto;padding:28px;border:1px solid var(--line);border-radius:14px;color:var(--ink);background:var(--paper)}#course-excerpt-dialog::backdrop{background:#20263a80}#course-excerpt-dialog .prose p{margin:1em 0}#course-excerpt-dialog form{margin-top:24px}