:root{--scen-bleu:rgb(25,55,105);--scen-bleu-soft:rgba(25,55,105,0.06);--scen-ocre:rgb(180,120,20);--scen-ocre-soft:rgba(180,120,20,0.09);--scen-vert:rgb(20,110,70);--scen-vert-soft:rgba(20,110,70,0.08);--scen-rouge:rgb(178,34,34);--scen-rouge-soft:rgba(178,34,34,0.07)}.scen-shell{max-width:1080px;margin:0 auto;padding:28px 20px 80px}.scen-hero{display:flex;flex-wrap:wrap;justify-content:space-between;gap:18px;align-items:flex-end;margin-bottom:26px}.scen-hero h1{margin:6px 0 10px}.scen-theme-block{margin:36px 0 8px;padding:12px 16px;border-radius:10px;border:1.5px solid var(--scen-bleu);background:var(--scen-bleu-soft)}.scen-theme-block[data-block=mecanique]{border-color:var(--scen-ocre);background:var(--scen-ocre-soft)}.scen-theme-block[data-block=autres]{border-color:var(--rule,#ccc);background:transparent}.scen-theme-kicker{font:600 11px var(--mono,ui-monospace,monospace);letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3,#666)}.scen-theme-title{margin:4px 0 0;font-size:1.15rem;color:var(--scen-bleu);line-height:1.3}.scen-theme-block[data-block=mecanique] .scen-theme-title{color:var(--scen-ocre)}.scen-box-body .katex-display,.scen-box-body .mathtext-display,.scen-exercise-content .katex-display,.scen-exercise-content .mathtext-display,.scen-exercise-content .scen-display,.scen-list .katex-display,.scen-list .mathtext-display,.scen-p .katex-display,.scen-p .mathtext-display{display:block;max-width:100%;overflow-x:auto;overflow-y:hidden;padding-bottom:4px;margin:.45em 0;-webkit-overflow-scrolling:touch}.scen-box-body .katex,.scen-exercise-content .katex,.scen-list .katex{font-size:1.05em;line-height:1.35}.scen-blocks-with-figure{margin-top:4px}.scen-blocks-with-figure .stem-layout__figure .scen-figure{margin:0}.scen-chapter{margin:34px 0 18px}.scen-chapter-head{display:flex;align-items:baseline;gap:12px;border-bottom:2px solid var(--scen-bleu);padding-bottom:8px;margin-bottom:14px}.scen-chapter-head h2{margin:0;color:var(--scen-bleu)}.scen-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.scen-card{display:flex;flex-direction:column;gap:8px;background:var(--surface,#fff);border:1px solid var(--rule);border-radius:8px;padding:14px 16px;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}.scen-card:hover{border-color:var(--scen-bleu);transform:translateY(-1px)}.scen-card-title{font-weight:600;color:var(--scen-bleu)}.scen-card-idee{font-size:13.5px;color:var(--ink-2)}.scen-card-sig{font-size:12.5px;color:var(--ink-3);border-top:1px dashed var(--rule);padding-top:8px}.scen-code{display:inline-flex;align-items:center;justify-content:center;min-width:44px;padding:2px 8px;border-radius:5px;background:var(--scen-bleu);color:#fff;font-weight:700;font-size:13px;letter-spacing:.03em}.scen-code.ocre{background:var(--scen-ocre)}.scen-chip{display:inline-block;padding:0 6px;border-radius:4px;background:var(--scen-bleu-soft);color:var(--scen-bleu);font-weight:600;font-size:.86em;border:1px solid rgba(25,55,105,.25)}.scen-box{border:1.5px solid;border-radius:8px;margin:18px 0;overflow:hidden}.scen-box-title{padding:7px 14px;font-weight:700;font-size:13.5px;color:#fff;letter-spacing:.02em}.scen-box-title:has(.scen-ar){direction:rtl;text-align:right;letter-spacing:0}.scen-box-body{padding:12px 16px 14px;font-size:14.5px;line-height:1.65}.scen-box.idee{border-color:var(--scen-ocre)}.scen-box.idee .scen-box-title{background:var(--scen-ocre)}.scen-box.idee .scen-box-body{background:var(--scen-ocre-soft)}.scen-box.exo{border-color:var(--scen-bleu)}.scen-box.exo .scen-box-title{background:var(--scen-bleu)}.scen-box.exo .scen-box-body{background:var(--scen-bleu-soft)}.scen-box.methode{border-color:var(--scen-vert)}.scen-box.methode .scen-box-title{background:var(--scen-vert)}.scen-box.methode .scen-box-body{background:var(--scen-vert-soft)}.scen-box.piege{border-color:var(--scen-rouge)}.scen-box.piege .scen-box-title{background:var(--scen-rouge)}.scen-box.piege .scen-box-body{background:var(--scen-rouge-soft)}.scen-box.signature{border-color:var(--scen-bleu);border-style:dashed}.scen-box.signature .scen-box-title{background:var(--scen-bleu)}.scen-exercise-paper{position:relative;margin:26px 0;overflow:hidden;border:1px solid var(--rule-strong);border-radius:10px;background:linear-gradient(90deg,transparent 0 52px,rgba(180,120,20,.18) 52px 53px,transparent 53px),var(--surface,#fff);box-shadow:0 12px 32px rgba(25,55,105,.07)}.scen-exercise-paper.is-main{border-top:3px solid var(--scen-bleu);box-shadow:0 16px 40px rgba(25,55,105,.1)}.scen-exercise-paper.is-drill{margin:16px 0}.scen-exercise-head{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:14px;align-items:center;padding:15px 18px 14px 12px;border-bottom:1px solid var(--rule);background:color-mix(in srgb,var(--scen-bleu-soft) 68%,var(--surface,#fff))}.scen-exercise-index{display:grid;width:36px;height:36px;place-items:center;border:1px solid rgba(25,55,105,.32);border-radius:50%;color:var(--scen-bleu);font-family:var(--mono);font-size:11px;font-weight:750;letter-spacing:.08em}.scen-exercise-heading{min-width:0}.scen-exercise-kicker{margin-bottom:3px;color:var(--scen-ocre);font-family:var(--mono);font-size:10px;font-weight:750;letter-spacing:.09em;text-transform:uppercase}.scen-exercise-title{margin:0;color:var(--scen-bleu);font-family:var(--serif);font-size:clamp(17px,2.2vw,21px);font-weight:600;line-height:1.25}.scen-exercise-title:has(.scen-ar){direction:rtl;text-align:right}.scen-exercise-status{display:flex;max-width:220px;justify-content:flex-end;gap:5px;flex-wrap:wrap}.scen-exercise-status span{padding:3px 7px;border:1px solid var(--rule-strong);border-radius:999px;background:var(--surface,#fff);color:var(--ink-3);font-family:var(--mono);font-size:9.5px;line-height:1.2;white-space:nowrap}.scen-exercise-status .has-figure{border-color:rgba(20,110,70,.35);background:var(--scen-vert-soft);color:var(--scen-vert)}.scen-exercise-body{display:grid;grid-template-columns:40px minmax(0,1fr);gap:14px;padding:18px 22px 20px 12px}.scen-exercise-margin{display:flex;min-height:100%;align-items:center;flex-direction:column;gap:8px}.scen-exercise-margin span{width:1px;min-height:30px;flex:1;background:var(--rule)}.scen-exercise-margin small{color:var(--ink-3);font-family:var(--mono);font-size:8px;letter-spacing:.12em;text-transform:uppercase;writing-mode:vertical-rl;transform:rotate(180deg)}.scen-exercise-content{min-width:0;font-size:15px;line-height:1.72}.scen-exercise-content>div>:first-child{margin-top:0}.scen-exercise-content>div>:last-child{margin-bottom:0}.scen-exercise-correction{margin:0;border-width:1px 0 0;border-radius:0;background:rgba(20,110,70,.025)}.scen-exercise-correction summary{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.scen-exercise-correction summary span{font-weight:700}.scen-exercise-correction summary small{color:var(--ink-3);font-weight:400}.scen-p{margin:9px 0}.scen-display{margin:12px 0;overflow-x:auto}.scen-list{margin:8px 0;padding-left:26px}ol.scen-list{list-style:decimal}ul.scen-list{list-style:disc}.scen-list li{margin:6px 0;line-height:1.6}.scen-list-alpha{list-style-type:lower-alpha}.scen-ar,.scen-ar-block{direction:rtl;text-align:right;unicode-bidi:isolate}.scen-ar-block .scen-p,.scen-list-rtl{text-align:right}.scen-list-rtl{padding-left:0;padding-right:26px}.scen-ltr-chain{direction:ltr;unicode-bidi:isolate;display:inline;white-space:normal}.scen-detail-title:has(.scen-ar){direction:rtl;text-align:right}.scen-box-body:has(.scen-ar),.scen-box-body:has(.scen-ar-block){direction:rtl}.scen-correction{border:1px solid var(--rule-strong);border-radius:8px;margin:18px 0;background:var(--surface,#fff)}.scen-correction summary{cursor:pointer;padding:11px 16px;font-weight:650;color:var(--scen-bleu);user-select:none}.scen-correction[open] summary{border-bottom:1px solid var(--rule)}.scen-correction-body{padding:6px 18px 16px;font-size:14.5px;line-height:1.7}.scen-detail-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:4px}.scen-detail-title{margin:8px 0 4px;color:var(--scen-bleu)}.scen-nav{display:flex;justify-content:space-between;gap:10px;margin-top:30px}.scen-epreuves{margin-top:40px}.scen-ep-card{border:1px solid var(--rule);border-radius:8px;padding:14px 16px;margin:10px 0;background:var(--surface,#fff)}.scen-ep-row{display:flex;gap:10px;align-items:baseline;padding:6px 0;border-top:1px dashed var(--rule);flex-wrap:wrap}.scen-ep-row:first-of-type{border-top:0}.scen-ep-idea{font-size:13px;color:var(--ink-3);font-style:italic;width:100%}.tag-attested{background:var(--scen-vert-soft);color:var(--scen-vert);border:1px solid var(--scen-vert)}.tag-probable{background:var(--scen-ocre-soft);color:var(--scen-ocre);border:1px solid var(--scen-ocre)}.trainer-card{max-width:780px;margin:0 auto}.trainer-sig{border:1.5px dashed var(--scen-bleu);border-radius:8px;padding:18px 20px;background:var(--scen-bleu-soft);font-size:15.5px;line-height:1.75;margin:16px 0 22px}.trainer-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.trainer-option{display:flex;flex-direction:column;gap:4px;text-align:left;border:1.5px solid var(--rule-strong);border-radius:8px;padding:12px 14px;background:var(--surface,#fff);cursor:pointer;font:inherit;transition:border-color .12s}.trainer-option:hover:not(:disabled){border-color:var(--scen-bleu)}.trainer-option:disabled{cursor:default}.trainer-option.correct{border-color:var(--scen-vert);background:var(--scen-vert-soft)}.trainer-option.wrong{border-color:var(--scen-rouge);background:var(--scen-rouge-soft)}.trainer-option .t-small{color:var(--ink-3)}.trainer-feedback{margin-top:18px}.trainer-score{display:flex;gap:18px;align-items:center}@media (max-width:640px){.trainer-options{grid-template-columns:1fr}.scen-exercise-paper{background:linear-gradient(90deg,transparent 0 42px,rgba(180,120,20,.15) 42px 43px,transparent 43px),var(--surface,#fff)}.scen-exercise-head{grid-template-columns:32px minmax(0,1fr);gap:10px;padding:13px 12px 12px 8px}.scen-exercise-index{width:30px;height:30px;font-size:9.5px}.scen-exercise-status{grid-column:2;max-width:none;justify-content:flex-start}.scen-exercise-body{grid-template-columns:30px minmax(0,1fr);gap:10px;padding:15px 13px 18px 8px}.scen-exercise-correction summary{align-items:flex-start;flex-direction:column;gap:2px}}.capstone-shell{max-width:920px}.capstone-kicker{display:flex;align-items:center;gap:12px;color:var(--ink-3);font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.capstone-rule{height:1px;flex:1;background:var(--rule-strong)}.capstone-cover{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;margin-top:14px;padding:34px 0 30px;border-top:3px solid var(--ink-1);border-bottom:1px solid var(--rule-strong)}.capstone-cover-main{max-width:610px}.capstone-title{margin:7px 0 10px;color:var(--ink-1);font-family:var(--serif);font-size:clamp(34px,6vw,58px);font-weight:500;letter-spacing:-.035em;line-height:1.02}.capstone-lede{max-width:620px;margin:0;color:var(--ink-2);font-family:var(--serif);font-size:17px;line-height:1.55}.capstone-metrics{display:grid;min-width:160px;margin:0;border:1px solid var(--rule-strong);align-self:start}.capstone-metrics>div{padding:10px 14px;border-bottom:1px solid var(--rule)}.capstone-metrics>div:last-child{border-bottom:0}.capstone-metrics dt{color:var(--ink-3);font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase}.capstone-metrics dd{margin:3px 0 0;color:var(--ink-1);font-size:17px;font-weight:650}.capstone-instructions{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;padding:30px 0 24px}.capstone-instructions h2{margin:6px 0 0;max-width:400px}.capstone-instructions ol{margin:0;padding-left:22px;color:var(--ink-2);font-size:14px;line-height:1.65}.capstone-instructions li{padding:3px 0 7px 7px}.capstone-paper{padding:24px 0 28px;border-bottom:1px solid var(--rule-strong)}.capstone-paper h2{margin:6px 0 18px}.capstone-paper-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}.capstone-paper-list li{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--rule)}.capstone-paper-number{color:var(--ink-3);font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}.capstone-paper-list li>span:last-child{display:flex;flex-direction:column;gap:3px}.capstone-paper-list small{color:var(--ink-3);font-size:10px;font-weight:650;letter-spacing:.08em;text-transform:uppercase}.capstone-paper-list strong{color:var(--ink-1);font-size:14px;font-weight:600}.capstone-provenance{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 14px;border-left:3px solid var(--scen-ocre);background:var(--scen-ocre-soft)}.capstone-start{width:100%;margin-top:18px;min-height:48px}.capstone-fineprint{margin:8px 0 0;text-align:center;color:var(--ink-3)}.capstone-error{display:flex;align-items:center;gap:8px 12px;flex-wrap:wrap;margin-top:18px;padding:12px 14px;border:1px solid var(--scen-rouge);border-radius:7px;background:var(--scen-rouge-soft);color:var(--scen-rouge);font-size:13px}.capstone-warmup{margin-top:42px;border-top:1px solid var(--rule-strong);border-bottom:1px solid var(--rule-strong)}.capstone-warmup>summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 2px;cursor:pointer;color:var(--ink-2);list-style:none}.capstone-warmup>summary::-webkit-details-marker{display:none}.capstone-warmup>summary span:first-child{display:flex;flex-direction:column;gap:2px}.capstone-warmup>summary small{color:var(--ink-3);font-size:11px;font-weight:400}.capstone-warmup[open]>summary span:last-child{transform:rotate(45deg)}.capstone-warmup-body{padding:0 0 24px}@media (max-width:700px){.capstone-cover{grid-template-columns:1fr;gap:20px;padding:26px 0 22px}.capstone-metrics{grid-template-columns:repeat(3,1fr)}.capstone-metrics>div{border-right:1px solid var(--rule);border-bottom:0}.capstone-metrics>div:last-child{border-right:0}.capstone-instructions{grid-template-columns:1fr;gap:18px}.capstone-provenance{align-items:flex-start}}@media (max-width:430px){.capstone-metrics{grid-template-columns:1fr}.capstone-metrics>div{border-right:0;border-bottom:1px solid var(--rule)}.capstone-metrics>div:last-child{border-bottom:0}.capstone-start{white-space:normal}}.scen-p-with-table>.scen-p:last-child{margin-bottom:0}.scen-table-wrap{margin:10px 0 14px}.scen-table-wrap .tutor-table td,.scen-table-wrap .tutor-table th{white-space:normal}@media (max-width:640px){.scen-table-wrap .tutor-table{font-size:12.5px;min-width:0;width:100%}.scen-table-wrap .tutor-table td,.scen-table-wrap .tutor-table th{padding:6px 9px}}