.app-da .essentiel-page{background:var(--papier);color:var(--encre);font:17px/1.6 var(--texte);--papier:#f7f9fc;--carte:#fff;--encre:#172846;--encre2:#46576f;--filet:#d7dfed;--bleu:#254fc4;--bleu-doux:#e9eef9;--jaune:#f4c84b;--jaune-doux:#fdf4d6;--ambre:#b45309;--rouge:#c2364a;--nuit:#04044c;--nuit-bord:#1b1f6e;--s-courbe:#9cc2ff;--s-neg:#ff8e8e;--s-jaune:#f4c84b;--s-texte:#eef1ff;--s-discret:#9aa7ce;--s-grille:#ffffff12;--s-axe:#eef1ff8c;--titres:var(--font-home-heading), var(--font-home-body), system-ui, sans-serif;--texte:var(--font-home-body), system-ui, -apple-system, sans-serif;--ease-out:cubic-bezier(.23, 1, .32, 1);--ease-in-out:cubic-bezier(.77, 0, .175, 1);--rail:232px;--haut:104px}.app-da .essentiel-page:not([data-pret]){visibility:hidden}.app-da .essentiel-page a{color:var(--bleu)}.app-da .essentiel-page .katex{white-space:nowrap;font-size:1.12em}.app-da .essentiel-page .mise-en-page{grid-template-columns:var(--rail) minmax(0, 1fr);gap:48px;max-width:1440px;margin:0 auto;padding:0 32px;display:grid}.app-da .essentiel-page .contenu{min-width:0;padding-bottom:96px}.app-da .essentiel-page .entete{max-width:760px;padding:40px 0 32px}.app-da .essentiel-page h1{font:760 50px/1.02 var(--titres);letter-spacing:-.025em;font-variation-settings:"opsz" 96;margin:0 0 16px}.app-da .essentiel-page .chapeau{color:var(--encre2);max-width:60ch;margin:0;font-size:19px}.app-da .essentiel-page h2{font:700 29px/1.15 var(--titres);letter-spacing:-.015em;font-variation-settings:"opsz" 48;text-wrap:balance;margin:0 0 20px}.app-da .essentiel-page h2 .katex{font-size:1.04em}.app-da .essentiel-page h3{font:650 17px/1.3 var(--texte);color:var(--encre);margin:28px 0 6px}.app-da .essentiel-page .rail{top:var(--top);align-self:start;padding:48px 0 24px;position:sticky}.app-da .essentiel-page .rail ol{border-left:1px solid var(--filet);margin:0;padding:0 0 0 18px;list-style:none}.app-da .essentiel-page .rail li button{text-align:left;cursor:pointer;width:100%;min-height:0;color:var(--encre2);background:0 0;border:0;align-items:baseline;gap:12px;padding:9px 0;font-size:15.5px;line-height:1.3;text-decoration:none;transition:color .16s;display:flex}.app-da .essentiel-page .rail li button .n{font-variant-numeric:tabular-nums;color:#8a97ad;width:1.2em;font-weight:650;transition:color .16s}.app-da .essentiel-page .rail li button[aria-current=true]{color:var(--encre);font-weight:600}.app-da .essentiel-page .rail li button[aria-current=true] .n{color:var(--bleu)}@media (hover:hover) and (pointer:fine){.app-da .essentiel-page .rail li button:hover{color:var(--encre)}}.app-da .essentiel-page .rail-curseur{background:var(--bleu);width:3px;height:30px;transform:translateY(var(--y,0));transition:transform .28s var(--ease-out), height .28s var(--ease-out);border-radius:2px;position:absolute;top:0;left:-1px}.app-da .essentiel-page .idee{scroll-margin-top:calc(var(--top) + 24px)}.app-da .essentiel-page .idee+.idee,.app-da .essentiel-page .scene-double+.idee,.app-da .essentiel-page .idee+.scene-double{margin-top:0}.app-da .essentiel-page section.idee,.app-da .essentiel-page .scene-double{border-top:1px solid var(--filet);padding:48px 0}.app-da .essentiel-page .scene-double{grid-template-columns:minmax(0,5fr) minmax(0,7fr);grid-template-areas:"i1 fig""i2 fig";gap:56px 48px;display:grid}.app-da .essentiel-page .scene-double>article:first-of-type{grid-area:i1}.app-da .essentiel-page .scene-double>article:last-of-type{grid-area:i2}.app-da .essentiel-page .scene-double>.scene{top:calc(var(--top) + 24px);grid-area:fig;align-self:start;position:sticky}.app-da .essentiel-page .avec-figure{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:start;column-gap:48px;display:grid}.app-da .essentiel-page .avec-figure>.scene{top:calc(var(--top) + 24px);position:sticky}.app-da .essentiel-page .seule>*{max-width:860px;margin-left:0;margin-right:auto}.app-da .essentiel-page .seule>.condition{max-width:62ch}.app-da .essentiel-page .f{text-align:center;margin:18px 0;padding:4px 0;overflow:auto hidden}.app-da .essentiel-page .f .katex-display{margin:0}.app-da .essentiel-page .f .katex{font-size:1.32em}.app-da .essentiel-page .f-grand .katex{font-size:1.5em}.app-da .essentiel-page .f-petit{margin:8px 0}.app-da .essentiel-page .f-petit .katex{font-size:1.16em}.app-da .essentiel-page .condition{color:var(--encre2);max-width:62ch;margin:10px 0;font-size:16px}.app-da .essentiel-page .seule .condition{text-align:left;margin-left:0;margin-right:auto}.app-da .essentiel-page .seule h2,.app-da .essentiel-page .seule>h3{text-align:left}.app-da .essentiel-page .rouge{color:var(--rouge)}.app-da .essentiel-page .cas{margin:14px 0 0;padding:0;list-style:none}.app-da .essentiel-page .cas>li{border-left:3px solid var(--filet);color:var(--encre2);border-radius:0 10px 10px 0;margin:0 0 8px;padding:10px 14px 10px 16px;font-size:16px;transition:background-color .22s,border-color .22s,color .22s;position:relative}.app-da .essentiel-page .cas-tete{color:var(--encre);font-weight:600}.app-da .essentiel-page .cas-suite{display:block}.app-da .essentiel-page .cas-lies>li.allume{background:var(--bleu-doux);border-left-color:var(--bleu);color:var(--encre)}.app-da .essentiel-page .cas-formules>li{flex-wrap:wrap;align-items:center;gap:4px 14px;display:flex}.app-da .essentiel-page .cas-formules .f{text-align:left;margin:0}.app-da .essentiel-page .cas-formules .katex-display,.app-da .essentiel-page .cas-formules .katex-display>.katex{text-align:left}.app-da .essentiel-page .reflexe{background:var(--jaune-doux);border-left:3px solid var(--jaune);color:var(--encre);border-radius:0 10px 10px 0;margin-top:20px;padding:12px 16px;font-size:15.5px}.app-da .essentiel-page .reflexe strong{font-weight:650}.app-da .essentiel-page .ecritures{gap:10px;margin-top:16px;display:grid}.app-da .essentiel-page .ecriture{text-align:left;background:var(--carte);border:1px solid var(--filet);cursor:pointer;border-radius:14px;grid-template-columns:7.2em minmax(0,1fr);grid-template-areas:"nom forme""nom ici""donne donne";gap:2px 12px;min-height:44px;padding:14px 16px;transition:border-color .18s,box-shadow .18s,background-color .18s;display:grid}.app-da .essentiel-page .e-nom{grid-area:nom;padding-top:2px;font-weight:650}.app-da .essentiel-page .e-forme{grid-area:forme}.app-da .essentiel-page .e-forme .katex{font-size:1.22em}.app-da .essentiel-page .e-ici{color:var(--bleu);grid-area:ici;min-height:1.6em}.app-da .essentiel-page .e-ici .katex{font-size:1em}.app-da .essentiel-page .e-donne{color:var(--encre2);grid-area:donne;margin-top:6px;font-size:15px}.app-da .essentiel-page .ecriture[aria-pressed=true],.app-da .essentiel-page .ecriture.survol{border-color:var(--jaune);box-shadow:0 0 0 3px var(--jaune-doux)}.app-da .essentiel-page .ecriture.impossible .e-ici{color:#8a97ad}.app-da .essentiel-page .ecriture:focus-visible{outline:3px solid var(--bleu);outline-offset:2px}.app-da .essentiel-page .sur-tel{display:none}@media (hover:none){.app-da .essentiel-page .sur-ordi{display:none}.app-da .essentiel-page .sur-tel{display:inline}}.app-da .essentiel-page .scene{background-color:var(--nuit);color:var(--s-texte);background-image:radial-gradient(70% 60% at 50% 42%,#4660ff38,#04044c00 70%),radial-gradient(120% 100%,#0000 60%,#00001e73);border-radius:20px;margin:0;padding:18px 20px 14px;position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffff0f,0 18px 50px -24px #04044c8c}.app-da .essentiel-page .scene .katex{color:var(--s-texte)}.app-da .essentiel-page .scene-tete{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 16px;min-height:34px;display:flex}.app-da .essentiel-page .vivant{flex:auto;min-width:0;font-size:17px}.app-da .essentiel-page .vivant .katex{font-size:1.18em}.app-da .essentiel-page .vivant-delta{color:var(--s-discret)}.app-da .essentiel-page.reserve .scene-tete{flex-flow:column;align-items:stretch;gap:2px}.app-da .essentiel-page .scene-toile{aspect-ratio:3/2;width:100%;margin-top:4px;position:relative}.app-da .essentiel-page .scene-toile svg{will-change:transform;width:100%;height:100%;display:block;overflow:visible}.app-da .essentiel-page .scene-toile-haute{aspect-ratio:6/5}.app-da .essentiel-page .scene-toile-large{aspect-ratio:2}.app-da .essentiel-page .scene-toile-carre{aspect-ratio:4/3;max-width:520px;margin:0 auto}.app-da .essentiel-page .scene-corps{grid-template-columns:minmax(0,1fr) 52px;align-items:stretch;gap:8px;display:grid}.app-da .essentiel-page .etiquette{white-space:nowrap;pointer-events:none;will-change:transform, opacity;position:absolute;top:0;left:0;transform:translate(-50%,-50%)}.app-da .essentiel-page .etiquette .katex{font-size:1.05em}.app-da .essentiel-page .etiquette-repere{background:#04044ce6;border:1px solid #f4c84b99;border-radius:999px;padding:1px 9px 2px}.app-da .essentiel-page .etiquette-repere .katex{color:var(--s-jaune)}.app-da .essentiel-page .reglages{border-top:1px solid #ffffff14;flex-direction:column;align-items:stretch;margin-top:6px;padding-top:6px;display:flex}.app-da .essentiel-page .reglages-ligne{flex-direction:row;align-items:center;gap:16px}.app-da .essentiel-page .reglages-bouton{flex-direction:row;justify-content:flex-end}.app-da .essentiel-page .curseur{grid-template-columns:1.4em minmax(0,1fr) 3em;align-items:center;gap:12px;min-width:0;display:grid}.app-da .essentiel-page .reglages-ligne .curseur{flex:1}.app-da .essentiel-page .cv .katex{color:var(--s-texte);font-size:1.15em}.app-da .essentiel-page output{font-variant-numeric:tabular-nums;text-align:right;color:var(--s-texte);font-size:15px}.app-da .essentiel-page input[type=range]{appearance:none;cursor:pointer;touch-action:none;background:0 0;width:100%;height:44px;margin:0}.app-da .essentiel-page input[type=range]::-webkit-slider-runnable-track{background:#fff3;border-radius:4px;height:4px}.app-da .essentiel-page input[type=range]::-moz-range-track{background:#fff3;border-radius:4px;height:4px}.app-da .essentiel-page input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:#fff;border-radius:50%;width:22px;height:22px;margin-top:-9px;transition:box-shadow .16s;box-shadow:0 0 0 5px #f4c84b00,0 2px 8px #0006}.app-da .essentiel-page input[type=range]::-moz-range-thumb{background:#fff;border:0;border-radius:50%;width:22px;height:22px}.app-da .essentiel-page input[type=range]:focus-visible{outline:none}.app-da .essentiel-page input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 5px #f4c84b8c,0 2px 8px #0006}.app-da .essentiel-page input[type=range]:active::-webkit-slider-thumb{box-shadow:0 0 0 7px #f4c84b59,0 2px 8px #0006}.app-da .essentiel-page .curseur-vertical{color:var(--s-discret);flex-direction:column;justify-content:space-between;align-items:center;padding:6px 0;font-size:12.5px;display:flex}.app-da .essentiel-page .curseur-vertical input[type=range]{writing-mode:vertical-lr;direction:rtl;flex:1;width:44px;height:auto;min-height:160px}.app-da .essentiel-page .curseur-vertical input[type=range]::-webkit-slider-runnable-track{width:4px;height:auto}.app-da .essentiel-page .curseur-vertical input[type=range]::-webkit-slider-thumb{margin-top:0;margin-left:-9px}.app-da .essentiel-page .rejouer{min-height:44px;color:var(--s-texte);cursor:pointer;background:#ffffff14;border:1px solid #ffffff38;border-radius:999px;padding:0 18px;transition:background-color .16s}@media (hover:hover) and (pointer:fine){.app-da .essentiel-page .rejouer:hover{background:#ffffff29}}.app-da .essentiel-page .rejouer:focus-visible,.app-da .essentiel-page .choix button:focus-visible{outline:3px solid var(--s-jaune);outline-offset:2px}.app-da .essentiel-page .verdict{text-align:center;min-height:28px;margin:6px 0 2px;font-size:17px;font-weight:600}.app-da .essentiel-page .verdict .katex{font-size:1.05em}.app-da .essentiel-page .bilan{color:var(--s-discret);text-align:center;font-variant-numeric:tabular-nums;min-height:26px;margin:4px 0 0;font-size:15px}.app-da .essentiel-page .bilan b{color:var(--s-texte);font-weight:600}.app-da .essentiel-page .bilan .pos{color:var(--s-courbe)}.app-da .essentiel-page .bilan .neg{color:var(--s-neg)}@media (max-width:400px){.app-da .essentiel-page.reserve .bilan{min-height:48px}}.app-da .essentiel-page .morph{height:156px;margin:8px 0 0;position:relative}.app-da .essentiel-page .morph-couche{flex-direction:column;align-items:center;gap:4px;display:flex;position:absolute;top:0;left:0;right:0}.app-da .essentiel-page .morph-couche .katex{font-size:1.36em}.app-da .essentiel-page .morph-couche [data-k]{display:inline-block}.app-da .essentiel-page .morph-ligne2{color:var(--s-discret);font-size:15.5px}.app-da .essentiel-page .morph-ligne2 .katex{font-size:1.12em}.app-da .essentiel-page .choix-ligne{flex-wrap:wrap;gap:10px 14px;display:flex}.app-da .essentiel-page .choix{background:#ffffff12;border-radius:999px;padding:3px;display:inline-flex}.app-da .essentiel-page .choix button{cursor:pointer;min-width:64px;min-height:44px;color:var(--s-discret);background:0 0;border:0;border-radius:999px;padding:0 14px;transition:background-color .18s,color .18s}.app-da .essentiel-page .choix button .katex{color:inherit;font-size:1.05em}.app-da .essentiel-page .choix button[aria-checked=true]{color:var(--s-texte);background:#ffffff29}.app-da .essentiel-page .tableau-signes{margin-top:6px}.app-da .essentiel-page .tableau-signes svg{width:100%;height:auto;display:block;overflow:visible}.app-da .essentiel-page .scene-fixe{padding:16px 18px}.app-da .essentiel-page .scene-fixe svg,.app-da .essentiel-page .mini-scene svg{width:100%;height:auto;display:block}.app-da .essentiel-page .chasles{grid-template-columns:minmax(0,1fr);justify-items:center;gap:4px;display:grid}.app-da .essentiel-page .chasles .mini-scene{width:100%;max-width:280px}.app-da .essentiel-page .mini-scene{background:var(--nuit);border-radius:14px;padding:6px 8px}.app-da .essentiel-page .seule>.tables{max-width:none}.app-da .essentiel-page .tables{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:8px;display:grid}.app-da .essentiel-page .table-bloc h3{margin:0 0 10px}.app-da .essentiel-page .table-carte{background:var(--carte);border:1px solid var(--filet);border-radius:16px;overflow:hidden}.app-da .essentiel-page table{border-collapse:collapse;width:100%}.app-da .essentiel-page th{text-align:left;color:var(--encre2);border-bottom:1px solid var(--filet);background:#f1f4fa;padding:10px 16px;font-size:14px;font-weight:600}.app-da .essentiel-page td{vertical-align:middle;border-bottom:1px solid #e7ecf5;padding:14px 16px}.app-da .essentiel-page tr:last-child td{border-bottom:0}.app-da .essentiel-page td .katex-display{text-align:left;margin:0}.app-da .essentiel-page td .katex-display>.katex{text-align:left;font-size:1.12em}.app-da .essentiel-page td.cond{color:var(--encre2);font-size:14.5px}.app-da .essentiel-page td.cond .katex{font-size:1.04em}.app-da .essentiel-page .pied{border-top:1px solid var(--filet);flex-wrap:wrap;gap:28px;padding-top:32px;display:flex}.app-da .essentiel-page .pied a{align-items:center;min-height:44px;font-weight:600;text-decoration:none;display:inline-flex}@media (max-width:1180px){.app-da .essentiel-page{--rail:180px}.app-da .essentiel-page .ecriture{grid-template-columns:minmax(0,1fr);grid-template-areas:"nom""forme""ici""donne"}.app-da .essentiel-page .mise-en-page{gap:32px}.app-da .essentiel-page .scene-double,.app-da .essentiel-page .avec-figure{column-gap:32px}}@media (max-width:900px){.app-da .essentiel-page{font-size:16.5px}.app-da .essentiel-page .mise-en-page{padding:0 16px;display:block}.app-da .essentiel-page .rail{top:var(--top);z-index:25;border-bottom:1px solid var(--filet);background:#f7f9fcf7;margin:0 -16px;padding:0;position:sticky}.app-da .essentiel-page .rail ol{scrollbar-width:none;border:0;gap:6px;padding:6px 16px;display:flex;overflow-x:auto}.app-da .essentiel-page .rail ol::-webkit-scrollbar{display:none}.app-da .essentiel-page .rail li button{border:1px solid var(--filet);white-space:nowrap;background:#fff;border-radius:999px;justify-content:center;align-items:center;min-width:44px;min-height:44px;padding:0 12px;font-size:14.5px}.app-da .essentiel-page .rail li button .t{display:none}.app-da .essentiel-page .rail li button .n{width:auto}.app-da .essentiel-page .rail li button[aria-current=true]{background:var(--encre);border-color:var(--encre);color:#fff}.app-da .essentiel-page .rail li button[aria-current=true] .n{color:#fff}.app-da .essentiel-page .rail li button[aria-current=true] .t{display:inline}.app-da .essentiel-page .rail-curseur{display:none}.app-da .essentiel-page .idee{scroll-margin-top:calc(var(--top) + 73px)}.app-da .essentiel-page .entete{padding:32px 0 28px}.app-da .essentiel-page h1{font-size:36px}.app-da .essentiel-page .chapeau{font-size:17px}.app-da .essentiel-page h2{font-size:24px}.app-da .essentiel-page section.idee,.app-da .essentiel-page .scene-double{padding:40px 0}.app-da .essentiel-page .scene-double,.app-da .essentiel-page .avec-figure{display:block}.app-da .essentiel-page .scene-double>.scene,.app-da .essentiel-page .avec-figure>.scene{margin-top:20px;position:relative;top:auto}.app-da .essentiel-page .scene-double>article:last-of-type{margin-top:36px}.app-da .essentiel-page .scene{border-radius:16px;margin-left:-4px;margin-right:-4px;padding:14px 12px 10px}.app-da .essentiel-page .scene-toile{aspect-ratio:5/4}.app-da .essentiel-page .scene-toile-large{aspect-ratio:8/5}.app-da .essentiel-page .scene-toile-haute{aspect-ratio:4/5}.app-da .essentiel-page .f .katex{font-size:1.18em}.app-da .essentiel-page .f-grand .katex{font-size:1.3em}.app-da .essentiel-page .tables{grid-template-columns:1fr}.app-da .essentiel-page td,.app-da .essentiel-page th{padding-left:10px;padding-right:10px}.app-da .essentiel-page .seule .condition,.app-da .essentiel-page .seule h2,.app-da .essentiel-page .seule>h3{text-align:left;margin-left:0}.app-da .essentiel-page .ecriture{grid-template-columns:6.4em minmax(0,1fr);grid-template-areas:"nom forme""nom ici""donne donne"}.app-da .essentiel-page .morph{height:150px}.app-da .essentiel-page .seul-large{display:none}.app-da .essentiel-page .mini-scene{max-width:300px}.app-da .essentiel-page thead tr,.app-da .essentiel-page tbody tr{grid-template-columns:minmax(0,1fr) minmax(0,1fr);display:grid}.app-da .essentiel-page th:nth-child(3){display:none}.app-da .essentiel-page td{border-bottom:0}.app-da .essentiel-page tbody tr{border-bottom:1px solid #e7ecf5}.app-da .essentiel-page tbody tr:last-child{border-bottom:0}.app-da .essentiel-page td.cond{grid-column:2;padding-top:0;font-size:14px}.app-da .essentiel-page td:first-child{grid-row:span 2;align-self:center}.app-da .essentiel-page td:nth-child(2){align-self:end}.app-da .essentiel-page td.cond:empty{display:none}.app-da .essentiel-page .morph-couche .katex{font-size:1.12em}}.app-da .essentiel-page .scene svg text{font-family:var(--texte);fill:var(--s-discret);font-size:12px}.app-da .essentiel-page .scene svg text.var,.app-da .essentiel-page .mini-scene svg text.var{fill:var(--s-texte);font-family:KaTeX_Math,Times New Roman,serif;font-size:16px;font-style:italic}.app-da .essentiel-page .scene svg text.signe{font-size:20px;font-weight:700}.app-da .essentiel-page .scene svg text.zero{fill:var(--s-texte);font-size:15px}.app-da .essentiel-page .etiquette .katex-display,.app-da .essentiel-page .vivant .katex-display,.app-da .essentiel-page .bilan .katex-display,.app-da .essentiel-page .morph .katex-display{margin:0}.app-da .essentiel-page .vivant .katex-display,.app-da .essentiel-page .vivant .katex-display>.katex{text-align:left}.app-da .essentiel-page .etiquette-petite .katex{font-size:.98em}.app-da .essentiel-page .etiquette-sur-bleu .katex,.app-da .essentiel-page .etiquette-sur-rouge .katex{font-size:1.05em}.app-da .essentiel-page .etiquette-sur-rouge .katex{color:#ffc2c2}.app-da .essentiel-page .scene-fixe .scene-toile{aspect-ratio:3/2!important}.app-da .essentiel-page .bilan .katex{color:var(--s-texte);font-size:1.08em}.app-da .essentiel-page .lMilieu,.app-da .essentiel-page .etiquette-petite .katex .mfrac{font-size:1em}.app-da .essentiel-page .e-ici .katex-display{text-align:left;margin:0}.app-da .essentiel-page .seul-etroit{display:none}@media (max-width:900px){.app-da .essentiel-page .seul-etroit{display:block}}.app-da .essentiel-page .f-paire{flex-wrap:wrap;justify-content:center;column-gap:64px;display:flex}.app-da .essentiel-page .f-paire>.f{margin:10px 0}.app-da .essentiel-page .seul-etroit .katex-display>.katex{text-align:left}@media (prefers-reduced-motion:reduce){.app-da .essentiel-page .rail-curseur{transition:none}}.app-da .essentiel-page .corps{display:contents}.app-da .essentiel-page .cas>li>p{margin:0}.app-da .essentiel-page .cas>li strong{color:var(--encre);font-weight:600}.app-da .essentiel-page .reflexe>span{display:block}.app-da .essentiel-page .graduation text{transition:opacity .12s cubic-bezier(.23,1,.32,1)}.app-da .essentiel-porte{margin:0 0 28px}.app-da .essentiel-porte .door{text-decoration:none}