:root{--paper:var(--surface);--band:var(--bg2);--maths-pale:color-mix(in srgb,var(--maths) 14%,var(--surface));--ok-pale:var(--ok-bg);--ko-pale:var(--ko-bg)}*{box-sizing:border-box}.maquette{background:#fff3c4;color:#4a3b00;font-size:.85rem;text-align:center;padding:6px 16px}header.top{background:var(--paper);border-bottom:1px solid var(--line)}header.top .in{max-width:1180px;margin:0 auto;padding-inline:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px}.logo{font:800 1.1rem var(--display);color:var(--ink);text-decoration:none}.logo span{background:#ff5a1f;color:#fff;border-radius:7px;padding:1px 7px;margin-left:6px;font-size:.9rem}.reglages{display:flex;gap:8px}.reglages button{font:700 .82rem var(--body);border:2px solid var(--line);background:var(--paper);color:var(--ink);border-radius:999px;padding:6px 12px;cursor:pointer}.reglages button[aria-pressed=true]{border-color:var(--maths);background:var(--maths-pale)}.seance-head{max-width:1240px;margin:16px auto 0;padding-inline:16px}.seance-head .in{position:relative;isolation:isolate;border-radius:22px;overflow:hidden;padding:22px clamp(18px,3vw,30px);color:#fff;background:#10183a;display:flex;justify-content:space-between;align-items:flex-end;gap:14px;flex-wrap:wrap}.seance-head .fond{position:absolute;inset:0;z-index:-1;background:url(/images/campus/decors/maths.webp) center/cover}.seance-head .fond:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#080c1ee6,#080c1e8c 60%,#080c1e4d)}.seance-head .k{font:700 .75rem var(--body);letter-spacing:.12em;text-transform:uppercase;color:#ffd84d;margin:0}.seance-head h1{margin:2px 0 0;font:800 clamp(1.6rem,4vw,2.3rem)/1.1 var(--display)}.seance-head .reglages button{border-color:#fff6;background:#ffffff1a;color:#fff}.seance-head .reglages button[aria-pressed=true]{background:#ffffff40;border-color:#fff}.cours{max-width:1240px;margin:0 auto;padding:16px;display:grid;grid-template-columns:minmax(190px,1fr) 4fr;gap:16px;align-items:start}.prof{position:sticky;top:84px;box-shadow:0 0 0 4px color-mix(in srgb,var(--maths) 18%,transparent),var(--glow);background:var(--paper);border:2px solid var(--maths);border-radius:18px;overflow:hidden;display:flex;flex-direction:column}.prof-img{position:relative;aspect-ratio:1/1;max-width:100%;background:var(--maths-pale)}.prof-img img{width:100%;height:100%;object-fit:cover;display:block;animation:respire 4s ease-in-out infinite;transform-origin:50% 90%}@keyframes respire{50%{transform:scale(1.015)}}.humeur{position:absolute;left:8px;bottom:8px;font:700 .72rem var(--body);background:var(--paper);color:var(--maths);border-radius:999px;padding:3px 9px;border:2px solid var(--maths)}.prof[data-humeur=bravo]{border-color:var(--ok)}.prof[data-humeur=bravo] .humeur{color:var(--ok);border-color:var(--ok)}.prof[data-humeur=regarde]{border-color:var(--ko)}.prof[data-humeur=regarde] .humeur{color:var(--ko);border-color:var(--ko)}.prof-corps{padding:12px 14px 16px;display:flex;flex-direction:column;gap:10px}.prof-nom{font:800 1.05rem var(--display);margin:0}.prof-nom small{display:block;font:400 .78rem var(--body);color:var(--muted)}.ecouter{display:flex;align-items:center;gap:10px;font:700 .9rem var(--body);background:var(--maths);color:#fff;border:0;border-radius:999px;padding:8px 14px 8px 8px;cursor:pointer;width:fit-content}.ecouter i{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#ffffff38;font-style:normal}.replique{margin:0;font-size:1rem;line-height:1.5}.replique .w{opacity:.45;transition:opacity .15s}.replique .w.dit{opacity:1}.virtuel{margin:0;font-size:.72rem;color:var(--muted)}.zone{background:var(--paper);border:1px solid var(--line);box-shadow:var(--glow);border-radius:18px;padding:20px clamp(16px,3vw,32px) 24px;min-height:420px;display:flex;flex-direction:column;gap:18px}.fil{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.fil b{font:800 1rem var(--display)}.points{display:flex;gap:6px;list-style:none;margin:0;padding:0}.points li{width:28px;height:8px;border-radius:99px;background:var(--line)}.points li.fait{background:var(--maths)}.points li.ici{background:var(--maths);opacity:.45}.etape{display:flex;flex-direction:column;gap:16px;animation:entre .35s ease both}@keyframes entre{0%{opacity:.001;transform:translateY(8px)}to{opacity:1;transform:none}}.etape[hidden]{display:none}.titre-etape{font:800 clamp(1.35rem,3vw,1.8rem)/1.2 var(--display);margin:0;text-wrap:balance}.consigne{margin:0;font-size:1.08rem;max-width:56ch}.figure{background:var(--maths-pale);border-radius:14px;padding:10px;display:grid;grid-template-columns:1.3fr 1fr;gap:12px;align-items:center}.figure svg{width:100%;height:auto;max-width:100%;touch-action:none;display:block}.rapports{display:grid;gap:8px;font:700 1.05rem var(--body);font-variant-numeric:tabular-nums}.rapports div{background:var(--paper);border-radius:10px;padding:8px 12px;display:flex;justify-content:space-between;gap:10px}.rapports span{color:var(--muted);font-weight:400}.choix{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}.choix button,.btn{min-height:54px;border-radius:14px;border:2px solid var(--ink);background:var(--paper);color:var(--ink);font:700 1.02rem var(--body);cursor:pointer;padding:8px 16px;text-align:center}.choix button:hover{background:var(--maths-pale)}.choix button.juste{border-color:var(--ok);background:var(--ok-pale)}.choix button.faux{border-color:var(--ko);background:var(--ko-pale)}.btn.main{background:var(--maths);border-color:var(--maths);color:#fff}.btn.lien{border-color:transparent;background:transparent;color:var(--maths);text-decoration:underline;min-height:44px}.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:auto}.reponse{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.reponse label{font-weight:700}.reponse input{font:700 1.2rem var(--body);width:140px;min-height:54px;border:2px solid var(--ink);border-radius:12px;padding:0 12px;background:var(--paper);color:var(--ink)}.retour{border-radius:12px;padding:12px 14px;font-size:1rem}.retour.ok{background:var(--ok-pale);color:var(--ok)}.retour.ko{background:var(--ko-pale);color:var(--ko)}.retour[hidden]{display:none}.calc{list-style:none;margin:0;padding:0;display:grid;gap:8px;font:700 1.1rem var(--body);font-variant-numeric:tabular-nums}.calc button{width:100%;text-align:left;min-height:52px;border-radius:12px;border:2px solid var(--line);background:var(--paper);color:var(--ink);font:inherit;padding:8px 14px;cursor:pointer}.calc button.juste{border-color:var(--ok);background:var(--ok-pale)}.calc button.faux{border-color:var(--ko);background:var(--ko-pale)}.astuce{border:2px dashed var(--maths);border-radius:14px;padding:14px;display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center}.astuce img{width:120px;height:120px;object-fit:cover;border-radius:12px}.astuce[hidden]{display:none}.bilan{display:grid;gap:8px;list-style:none;margin:0;padding:0}.bilan li{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;border-radius:12px;background:var(--band)}.etat{font:700 .8rem var(--body);padding:2px 10px;border-radius:999px}.etat.acq{background:var(--ok-pale);color:var(--ok)}.etat.fra{background:var(--ko-pale);color:var(--ko)}.etat.pas{background:var(--line);color:var(--muted)}.pause-f{background:linear-gradient(135deg,color-mix(in srgb,#ffd84d 18%,var(--paper)),var(--paper));border-radius:16px;padding:16px}.pause-k{margin:0;font:700 .78rem var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--or)}.calc-m{display:grid;gap:8px}.calc-m p{margin:6px 0 0}.calc-m .choix{grid-template-columns:repeat(3,minmax(0,110px))}button:focus-visible,input:focus-visible{outline:3px solid var(--maths);outline-offset:2px}@media(max-width:760px){body{font-size:17px}.cours{grid-template-columns:1fr;padding:0 0 16px;gap:0}.prof{position:sticky;top:104px;z-index:5;border-radius:0;border-width:0 0 3px;flex-direction:row;align-items:center;gap:10px;padding:8px 12px}.prof-img{width:56px;height:56px;flex:none;border-radius:50%;overflow:hidden}.humeur,.prof-nom small,.virtuel{display:none}.prof-corps{padding:0;flex-direction:row;align-items:center;gap:10px;flex:1;min-width:0}.prof-nom{display:none}.replique{font-size:.92rem;flex:1;min-width:0}.ecouter{padding:6px;order:2}.ecouter span{display:none}.zone{border-radius:0;border-width:0;min-height:0}.figure{grid-template-columns:1fr}.astuce{grid-template-columns:72px 1fr}.astuce img{width:72px;height:72px}}@media(prefers-reduced-motion:reduce){.prof-img img,.etape{animation:none}.replique .w{transition:none}}