/* ============================================================
   SOS CHIMIE — « Le tableau périodique de la réussite »
   Palette tirée du logo : crème, orange SOS, bleu fiole, encre.
   Motifs signature : cases d'éléments périodiques, hexagones
   benzéniques, flèches de réaction.
   ============================================================ */

@font-face{font-family:"Space Grotesk";font-style:normal;font-weight:300 700;font-display:swap;src:url("assets/vendor/fonts/space-grotesk-var.woff2") format("woff2")}
@font-face{font-family:"Caveat";font-style:normal;font-weight:400 700;font-display:swap;src:url("assets/vendor/fonts/caveat-var.woff2") format("woff2")}
@font-face{font-family:"Albert Sans";font-style:normal;font-weight:300 900;font-display:swap;src:url("assets/vendor/fonts/albert-sans-var.woff2") format("woff2")}

:root{
  --paper:#FBFCF9;          /* page de cahier */
  --paper-2:#F3F5EF;
  --board:#17251F;          /* tableau noir d'amphi */
  --board-2:#1E2F27;
  --chalk:#F2F4ED;
  --chalk-dim:#AAB6A9;
  --craie-o:#FFA36B;        /* craie orange */
  --craie-b:#8FC1FF;        /* craie bleue */
  --ink:#191C1E;
  --ink-soft:#5C6166;
  --orange:#D6572B;
  --orange-deep:#B2431F;
  --blue:#3367AE;
  --blue-deep:#24497E;
  --blue-pale:#E8EFF9;
  --line:#E3DCCB;
  --ok:#237A4B;
  --disp:"Space Grotesk",system-ui,sans-serif;
  --body:"Albert Sans",system-ui,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--body);color:var(--ink);background:var(--paper);
  background-image:
    linear-gradient(rgba(51,103,174,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(51,103,174,.055) 1px, transparent 1px);
  background-size:26px 26px;
  font-size:17px;line-height:1.65}
/* clip (pas hidden) : hidden ferait du body un conteneur de scroll → sticky/compositing cassés */
html,body{overflow-x:clip}
::selection{background:var(--orange);color:#fff}
a{color:var(--blue-deep)}
img{max-width:100%;display:block}

.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

/* ---------- entête ---------- */
header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 22px;max-width:1120px;margin:0 auto}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.logo svg{height:40px;width:auto}
.logo .lt{font-family:var(--disp);font-weight:700;line-height:.95;letter-spacing:-.01em}
.logo .lt .o{color:var(--orange);font-size:21px;display:block}
.logo .lt .c{color:var(--ink);font-size:19px;display:block}
.nav-links{display:flex;gap:22px}
.nav-links a{font-weight:600;font-size:15px;color:var(--ink-soft);text-decoration:none}
.nav-links a:hover{color:var(--orange)}
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--disp);font-weight:700;font-size:15.5px;text-decoration:none;border-radius:12px;padding:13px 24px;cursor:pointer;border:2px solid transparent;transition:transform .15s ease,box-shadow .15s ease}
.btn-o{background:var(--orange);color:#fff;box-shadow:0 5px 0 var(--orange-deep)}
.btn-o:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--orange-deep)}
.btn-b{background:var(--blue);color:#fff;box-shadow:0 5px 0 var(--blue-deep)}
.btn-b:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--blue-deep)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(25,28,30,.06)}
.burger{display:none;background:none;border:none;font-size:26px;color:var(--ink);cursor:pointer}
.mobile{display:none}

/* ---------- décor hexagones ---------- */
.hexbg{position:absolute;pointer-events:none;opacity:.55}
.hexbg path{stroke:var(--line);stroke-width:1.6;fill:none}
.hexbg .full{fill:var(--blue-pale);stroke:none}

/* ---------- sections ---------- */
section{position:relative;padding:74px 0}
.sec-tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);margin-bottom:14px}
.sec-tag .arrow{font-size:17px}
h1,h2{font-family:var(--disp);letter-spacing:-.02em;line-height:1.08;font-weight:700}
h1{font-size:clamp(38px,6vw,66px)}
h2{font-size:clamp(28px,4vw,42px);max-width:24ch;margin-bottom:16px}
.lead{font-size:clamp(17px,1.6vw,19.5px);color:var(--ink-soft);max-width:60ch}

/* ---------- cases d'éléments périodiques ---------- */
.elem{position:relative;background:#fff;border:2.5px solid var(--ink);border-radius:12px;padding:14px 14px 12px;box-shadow:5px 5px 0 rgba(25,28,30,.14);min-width:104px}
.elem .z{position:absolute;top:7px;right:10px;font-family:var(--disp);font-size:11px;font-weight:700;color:var(--ink-soft)}
.elem .sym{display:block;font-family:var(--disp);font-weight:700;font-size:34px;line-height:1;letter-spacing:-.02em}
.elem .nm{display:block;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);margin-top:5px}
.elem.o .sym{color:var(--orange)}
.elem.b .sym{color:var(--blue)}
.elem.big{padding:20px 18px 16px;min-width:150px}
.elem.big .sym{font-size:44px}
.elem.big .desc{font-size:13.5px;color:var(--ink-soft);margin-top:8px;font-weight:500;line-height:1.45}

/* ---------- HERO : le tableau de M. Doumbouya ---------- */
.hero{position:relative;padding:0;background:
  radial-gradient(ellipse 90% 70% at 30% 20%, #21352C 0%, transparent 60%),
  radial-gradient(ellipse 70% 60% at 85% 85%, #0F1A15 0%, transparent 55%),
  var(--board);
  border-bottom:10px solid #7A5A3A;  /* la baguette du tableau */
  box-shadow:inset 0 -40px 80px -40px rgba(0,0,0,.55);
  overflow:hidden;min-height:88vh;display:flex;align-items:stretch}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.045) 1px, transparent 1.4px);
  background-size:5px 7px}
#bubbles{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}
.hero .wrap{position:relative;z-index:3;display:grid;grid-template-columns:1.05fr .95fr;gap:0;align-items:end;width:100%}
.hero-copy{padding:96px 0 90px;align-self:center}
.hero h1{color:var(--chalk);font-size:clamp(40px,5.6vw,72px);text-shadow:0 2px 14px rgba(0,0,0,.35)}
.hero h1 .hl{font-family:"Caveat",cursive;font-weight:700;color:var(--craie-o);font-size:1.18em;position:relative;display:inline-block;transform:rotate(-1.5deg)}
.hero .lead{color:var(--chalk-dim);margin:20px 0 8px;max-width:52ch}
.hero .lead b{color:var(--chalk)}
.equation{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:"Caveat",cursive;font-weight:700;font-size:clamp(20px,2.4vw,27px);margin:22px 0 4px;color:var(--chalk)}
.equation .t{border:2px solid rgba(242,244,237,.5);border-radius:12px;padding:4px 16px;transform:rotate(-.8deg);opacity:0;animation:eqpop .45s cubic-bezier(.3,1.5,.5,1) forwards}
.equation .t:nth-child(1){animation-delay:.3s}
.equation .t:nth-child(3){animation-delay:.7s;transform:rotate(.9deg)}
.equation .t:nth-child(5){animation-delay:1.15s}
.equation .res{border-color:var(--craie-o);color:var(--craie-o);box-shadow:0 0 22px rgba(255,163,107,.25)}
.equation .fl{color:var(--craie-b);font-size:1.25em;opacity:0;animation:eqpop .3s ease forwards}
.equation .fl:nth-child(2){animation-delay:.55s}
.equation .fl:nth-child(4){animation-delay:1s;animation:eqpop .3s ease 1s forwards, balance 2.4s ease-in-out 1.8s infinite}
@keyframes eqpop{to{opacity:1;transform:scale(1) rotate(var(--rot,0deg))}}
@keyframes balance{0%,100%{transform:translateX(0)}50%{transform:translateX(4px) scale(1.12)}}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero .btn-ghost{color:var(--chalk);border-color:rgba(242,244,237,.55)}
.hero .btn-ghost:hover{background:rgba(242,244,237,.12)}
/* la craie posée */
.hero-stats{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.chalk-stat{font-family:"Caveat",cursive;color:var(--chalk);text-align:center;position:relative;padding:10px 18px}
.chalk-stat b{display:block;font-size:34px;font-weight:700;line-height:1;color:var(--craie-b)}
.chalk-stat span{font-size:16px;color:var(--chalk-dim)}
.chalk-stat svg{position:absolute;inset:-6px;width:calc(100% + 12px);height:calc(100% + 12px);overflow:visible}
.chalk-stat svg ellipse{fill:none;stroke:var(--craie-o);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:340;stroke-dashoffset:340;opacity:.85}
.in .chalk-stat svg ellipse,.hero .chalk-stat svg ellipse{animation:draw 1.2s ease forwards}
.chalk-stat:nth-child(2) svg ellipse{animation-delay:.5s}
.chalk-stat:nth-child(3) svg ellipse{animation-delay:1s}
@keyframes draw{to{stroke-dashoffset:0}}
/* le professeur au premier plan */
.hero-man{position:relative;align-self:end;display:flex;align-items:flex-end;justify-content:center;min-height:520px}
.hero-man img{width:min(420px,88%);filter:drop-shadow(0 24px 42px rgba(0,0,0,.55));position:relative;z-index:3;
  opacity:0;transform:translateY(40px);animation:manin 1s cubic-bezier(.22,1,.36,1) .2s forwards;will-change:transform}
@keyframes manin{to{opacity:1;transform:translateY(0)}}
/* ardoise de craie : formules qui se dessinent autour de lui */
.chalkart{position:absolute;inset:0;z-index:2;pointer-events:none;overflow:visible}
.chalkart path,.chalkart circle,.chalkart line{fill:none;stroke:var(--chalk);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;opacity:.9}
.chalkart .o{stroke:var(--craie-o)}
.chalkart .b{stroke:var(--craie-b)}
.chalkart text{fill:var(--chalk);font-family:"Caveat",cursive;font-size:30px;opacity:0;animation:fadein .6s ease forwards}
.chalkart text.o{fill:var(--craie-o);stroke:none}
.chalkart text.b{fill:var(--craie-b);stroke:none}
.chalkart .draw{stroke-dasharray:500;stroke-dashoffset:500;animation:draw 1.6s ease forwards}
@keyframes fadein{to{opacity:.92}}
.hero-scroll{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);z-index:4;color:var(--chalk-dim);font-family:"Caveat",cursive;font-size:18px;animation:balance 2.6s ease-in-out infinite}

/* ---------- matières ---------- */
.matieres{background:transparent}
.mat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}
.mat{border:1.5px solid #D9E3F2;border-radius:14px;padding:20px 18px;background:#fff;transition:transform .15s ease,box-shadow .15s ease}
.mat:hover{transform:translateY(-3px);box-shadow:0 12px 24px -14px rgba(25,28,30,.3)}
.mat .hex{width:46px;height:52px;display:grid;place-items:center;margin-bottom:12px;position:relative}
.mat .hex svg{position:absolute;inset:0}
.mat .hex i{font-size:21px;color:#fff;position:relative}
.mat h3{font-family:var(--disp);font-size:16.5px;font-weight:700;margin-bottom:5px}
.mat p{font-size:13.5px;color:var(--ink-soft)}
.mat .pub{display:inline-block;margin-top:10px;font-family:var(--disp);font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:99px;padding:3px 10px}
.mat .pub.sup{background:var(--blue-pale);color:var(--blue-deep)}
.mat .pub.lyc{background:#FCEBE2;color:var(--orange-deep)}

/* ---------- méthode (tableau périodique) ---------- */
.methode .m-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
@media(max-width:960px){.methode .m-grid{grid-template-columns:1fr 1fr}}

/* ---------- formations (catalogue) ---------- */
.formations{background:linear-gradient(180deg, rgba(51,103,174,.07), rgba(51,103,174,.02))}
.offers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.offer{background:#fff;border:2px solid var(--ink);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;box-shadow:6px 6px 0 rgba(25,28,30,.12);transition:transform .15s ease}
.offer:hover{transform:translateY(-3px)}
.offer .cov{height:140px;background:linear-gradient(120deg,var(--blue),var(--blue-deep));display:grid;place-items:center;position:relative;overflow:hidden}
.offer .cov img{width:100%;height:100%;object-fit:cover}
.offer .cov i{font-size:44px;color:rgba(255,255,255,.85)}
.offer .bd{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.offer h3{font-family:var(--disp);font-size:17.5px;font-weight:700;line-height:1.25}
.offer p{font-size:13.8px;color:var(--ink-soft);flex:1}
.offer .row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px}
.offer .price{font-family:var(--disp);font-weight:700;font-size:18px}
.offer .price small{font-size:11.5px;color:var(--ink-soft);font-weight:500}
.offer .go{font-family:var(--disp);font-weight:700;font-size:13.5px;background:var(--orange);color:#fff;text-decoration:none;border-radius:9px;padding:9px 15px;box-shadow:0 3px 0 var(--orange-deep)}
.cat-fallback{background:#fff;border:2px dashed var(--blue);border-radius:16px;padding:34px;text-align:center;margin-top:32px}
.cat-fallback h3{font-family:var(--disp);font-size:20px;margin-bottom:8px}
.cat-fallback p{color:var(--ink-soft);max-width:52ch;margin:0 auto 18px}
.cat-note{font-size:12px;color:var(--ink-soft);margin-top:14px;text-align:center}

/* ---------- chaîne YouTube ---------- */
.videos{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.vid{background:#fff;border:1.5px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;color:var(--ink);transition:transform .15s ease,box-shadow .15s ease}
.vid:hover{transform:translateY(-3px);box-shadow:0 14px 26px -16px rgba(25,28,30,.35)}
.vid .th{position:relative;aspect-ratio:16/9;overflow:hidden}
.vid .th img{width:100%;height:100%;object-fit:cover}
.vid .th .play{position:absolute;inset:0;display:grid;place-items:center}
.vid .th .play span{width:52px;height:52px;border-radius:50%;background:rgba(214,87,43,.94);display:grid;place-items:center;color:#fff;font-size:20px;padding-left:4px}
.vid h3{font-size:14.5px;font-weight:700;padding:13px 15px 4px;line-height:1.35}
.vid p{font-size:12px;color:var(--ink-soft);padding:0 15px 14px}
.yt-cta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:28px}

/* ---------- cours particuliers ---------- */
.visio{background:var(--board);color:var(--chalk);border-top:8px solid #7A5A3A}
.visio h2{color:#fff}
.visio .lead{color:#C8C3B6}
.visio-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.visio ul{list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:12px}
.visio li{display:flex;gap:12px;align-items:flex-start;font-size:16px}
.visio li i{color:var(--orange);font-size:20px;margin-top:2px}
.visio .card{background:var(--board-2);border:1.5px solid #2C4136;border-radius:16px;padding:26px}
.visio .card .t{font-family:var(--disp);font-weight:700;font-size:18px;margin-bottom:14px;color:#fff}
.visio .slot{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px dashed #2C4136;font-size:14.5px}
.visio .slot:last-of-type{border-bottom:none}
.visio .slot b{color:#fff}

/* ---------- à propos ---------- */
.apropos .ap-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.ap-photo{background:linear-gradient(135deg,var(--blue-pale),#fff);border:2px solid var(--ink);border-radius:18px;padding:30px;box-shadow:8px 8px 0 rgba(25,28,30,.12);text-align:center}
.ap-photo .flask{margin:0 auto 14px;width:120px}
.ap-photo .nm{font-family:var(--disp);font-weight:700;font-size:20px}
.ap-photo .rl{font-size:13.5px;color:var(--ink-soft)}
.ap-stats{display:flex;gap:12px;margin-top:18px;justify-content:center;flex-wrap:wrap}

/* ---------- contact ---------- */
.contact{background:transparent}
.c-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-top:8px}
.form label{display:block;font-family:var(--disp);font-weight:700;font-size:13px;margin:16px 0 6px}
.form input,.form select,.form textarea{width:100%;border:2px solid var(--line);border-radius:12px;background:var(--paper);padding:13px 15px;font-family:var(--body);font-size:15px;color:var(--ink);outline:none;transition:border-color .15s ease}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--blue)}
.form .msg{margin-top:14px;font-weight:700}
.form .msg.ok{color:var(--ok)}
.form .msg.err{color:var(--orange-deep)}
.hpot{position:absolute;left:-9999px;opacity:0}

/* ---------- pied ---------- */
footer{background:var(--board);color:var(--chalk-dim)}
.foot{max-width:1120px;margin:0 auto;padding:36px 22px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13.5px}
.foot a{color:#B9B4A8}
.foot a:hover{color:#fff}
.foot .col{display:flex;flex-direction:column;gap:8px;min-width:160px}
.foot .col b{font-family:var(--disp);color:#fff;font-size:12px;letter-spacing:.1em;text-transform:uppercase}

/* ---------- apparitions ---------- */
.reveal{opacity:0;transform:translateY(18px)}
.reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.22,1,.36,1)}
.d1{transition-delay:.08s!important}.d2{transition-delay:.16s!important}.d3{transition-delay:.24s!important}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important}}

@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-copy{padding:64px 0 8px}
  .hero-man{min-height:380px}
  .hero-man img{width:min(320px,80%)}
  .hero-grid,.visio-grid,.apropos .ap-grid,.c-grid{grid-template-columns:1fr}
  .mat-grid{grid-template-columns:1fr 1fr}
  .offers,.videos{grid-template-columns:1fr}
  .nav-links{display:none}
  .burger{display:block}
  .mobile{display:none;flex-direction:column;gap:4px;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 22px 16px}
  .mobile.open{display:flex}
  .mobile a{padding:10px 0;font-weight:700;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
}
@media(max-width:600px){
  .mat-grid{grid-template-columns:1fr}
  section{padding:54px 0}
  .elem.big{min-width:120px}
}


/* ============ VIE CHIMIQUE — animations ============ */
#bubbles{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero .wrap{position:relative;z-index:1}
.hexbg{animation:hexfloat 16s ease-in-out infinite alternate}
@keyframes hexfloat{from{transform:translateY(0) rotate(0deg)}to{transform:translateY(-18px) rotate(4deg)}}
.elem{transition:transform .18s ease,box-shadow .18s ease}
.elem:hover{transform:translateY(-5px) rotate(-1.2deg);box-shadow:9px 11px 0 rgba(25,28,30,.18)}
.equation .t{opacity:0;transform:scale(.7);animation:eqpop .45s cubic-bezier(.3,1.5,.5,1) forwards}
.equation .t:nth-child(1){animation-delay:.15s}
.equation .t:nth-child(3){animation-delay:.5s}
.equation .t:nth-child(5){animation-delay:.95s}
.equation .fl{opacity:0;animation:eqpop .3s ease forwards}
.equation .fl:nth-child(2){animation-delay:.38s}
.equation .fl:nth-child(4){animation-delay:.8s;animation:eqpop .3s ease .8s forwards, balance 2.2s ease-in-out 1.6s infinite}
@keyframes eqpop{to{opacity:1;transform:scale(1)}}
@keyframes balance{0%,100%{transform:scale(1) translateX(0)}50%{transform:scale(1.15) translateX(3px)}}
.mat .hex svg{transition:transform .5s cubic-bezier(.3,1.4,.5,1)}
.mat:hover .hex svg{transform:rotate(360deg)}
.flask-live .bub{animation:rise 2.6s ease-in infinite}
.flask-live .bub.b2{animation-delay:.9s}
.flask-live .bub.b3{animation-delay:1.7s}
@keyframes rise{0%{transform:translateY(0);opacity:0}25%{opacity:1}100%{transform:translateY(-14px);opacity:0}}
.vid .th img{transition:transform .4s ease}
.vid:hover .th img{transform:scale(1.06)}
@media (prefers-reduced-motion:reduce){
  #bubbles{display:none}
  .hexbg,.equation .t,.equation .fl,.flask-live .bub{animation:none!important;opacity:1!important;transform:none!important}
}

/* portrait à-propos */
.ap-portrait{width:190px;height:190px;object-fit:cover;border-radius:22px;border:3px solid var(--ink);box-shadow:7px 7px 0 rgba(25,28,30,.16);margin:0 auto 16px}

/* articles */
.vid .bd-art{padding:14px 16px}
.vid .bd-art h3{padding:0;font-size:15.5px}
.vid .bd-art p{padding:6px 0 0;font-size:13px}
.vid .bd-art .dt{font-family:var(--disp);font-size:11px;color:var(--ink-soft);font-weight:700;text-transform:uppercase;letter-spacing:.06em;display:block;margin-top:10px}

/* ============ V4 — le site à la première personne ============ */
/* bonjour manuscrit du héro */
.hero-hello{display:inline-block;font-family:"Caveat",cursive;font-size:clamp(22px,2.6vw,30px);color:var(--craie-b);transform:rotate(-1.6deg);margin-bottom:10px;opacity:0;animation:eqpop .5s ease .25s forwards}

/* --- mes accompagnements (3 formats) --- */
.accomp{position:relative}
.acc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px;align-items:stretch}
.acc{position:relative;background:#fff;border:2px solid var(--ink);border-radius:18px;padding:26px 24px 24px;display:flex;flex-direction:column;gap:12px;box-shadow:7px 7px 0 rgba(25,28,30,.12);transition:transform .18s ease}
.acc:hover{transform:translateY(-4px)}
.acc-k{font-family:"Caveat",cursive;font-size:34px;color:var(--blue);line-height:1}
.acc-tag{position:absolute;top:-13px;right:18px;font-family:var(--disp);font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--blue-pale);color:var(--blue-deep);border:1.5px solid var(--blue);border-radius:99px;padding:4px 12px}
.acc h3{font-family:var(--disp);font-size:20px;font-weight:700}
.acc .acc-p{font-size:14.5px;color:var(--ink-soft)}
.acc ul{list-style:none;display:flex;flex-direction:column;gap:9px;margin:2px 0 6px;flex:1}
.acc li{position:relative;padding-left:24px;font-size:14px}
.acc li::before{content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--ok)}
.acc .btn{justify-content:center}
/* la carte du milieu = tableau noir (mise en avant des sessions de groupe) */
.acc.mid{background:linear-gradient(165deg,var(--board-2),var(--board));color:var(--chalk);border-color:var(--board);box-shadow:7px 7px 0 rgba(23,37,31,.35)}
.acc.mid h3{color:#fff}
.acc.mid .acc-p{color:var(--chalk-dim)}
.acc.mid .acc-k{color:var(--craie-o)}
.acc.mid .acc-tag{background:var(--board);color:var(--craie-o);border-color:var(--craie-o)}
.acc.mid li::before{color:var(--craie-o)}
.acc.mid b{color:#fff}
.btn-ghost-dark{border:2px solid var(--ink);color:var(--ink);background:transparent}
.btn-ghost-dark:hover{background:var(--ink);color:#fff}

/* --- formations : cartes exemples « en préparation » --- */
.offer .cov .soon{position:absolute;top:12px;left:12px;font-family:var(--disp);font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:#fff;color:var(--orange-deep);border-radius:99px;padding:4px 11px;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.offer .cov.cov-o{background:linear-gradient(120deg,var(--orange),var(--orange-deep))}
.offer .cov.cov-g{background:linear-gradient(120deg,#2E5A43,var(--board))}
.offer .price.sm{font-size:13.5px;color:var(--ink-soft)}

/* --- sessions : fallback vivant --- */
.sessions-empty{background:#fff;border:2px dashed var(--blue);border-radius:16px;padding:38px 30px;text-align:center;margin-top:32px}
.sessions-empty i{font-size:38px;color:var(--blue)}
.sessions-empty h3{font-family:var(--disp);font-size:20px;margin:10px 0 8px}
.sessions-empty p{color:var(--ink-soft);max-width:56ch;margin:0 auto 18px}

/* --- chaîne : accès libre vs abonnés --- */
.yt-split{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:34px;border-radius:18px;overflow:hidden;border:2px solid var(--board);background:linear-gradient(165deg,var(--board-2),var(--board));color:var(--chalk)}
.ys{padding:28px 28px 26px;display:flex;flex-direction:column;gap:14px}
.ys.free{border-right:2px dashed rgba(242,244,237,.25)}
.ys-tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--craie-b)}
.ys-tag.or{color:var(--craie-o)}
.ys ul{list-style:none;display:flex;flex-direction:column;gap:11px;flex:1}
.ys li{position:relative;padding-left:26px;font-size:15px;color:var(--chalk)}
.ys.free li::before{content:"—";position:absolute;left:0;color:var(--craie-b);font-weight:700}
.ys.mb li::before{content:"★";position:absolute;left:0;color:var(--craie-o);font-size:12px;top:3px}
.ys .btn{align-self:flex-start;margin-top:4px}

/* --- FAQ cahier --- */
.faq-list{display:flex;flex-direction:column;gap:14px;margin-top:32px;max-width:820px}
.faq details{background:#fff;border:2px solid var(--ink);border-radius:14px;box-shadow:5px 5px 0 rgba(25,28,30,.1);overflow:hidden}
.faq summary{display:flex;align-items:center;gap:14px;padding:17px 20px;cursor:pointer;font-family:var(--disp);font-weight:700;font-size:16px;list-style:none;user-select:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{flex:none;width:30px;height:30px;border-radius:50%;border:2px solid var(--orange);color:var(--orange-deep);font-family:"Caveat",cursive;font-size:21px;display:grid;place-items:center;transform:rotate(-6deg)}
.faq summary i{margin-left:auto;color:var(--ink-soft);transition:transform .25s ease}
.faq details[open] summary i{transform:rotate(180deg)}
.faq details p{padding:0 20px 20px 64px;color:var(--ink-soft);font-size:15px;line-height:1.7}
.faq details[open] summary{border-bottom:1.5px dashed var(--line)}
.faq details[open] p{animation:faqin .35s ease}
@keyframes faqin{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

@media(max-width:960px){
  .acc-grid{grid-template-columns:1fr}
  .yt-split{grid-template-columns:1fr}
  .ys.free{border-right:none;border-bottom:2px dashed rgba(242,244,237,.25)}
}

/* ============ V4.2 — « Dans mon académie » (le labo de révision) ============ */
.academie{background:
  radial-gradient(900px 480px at 80% 10%, rgba(255,255,255,.04), transparent 60%),
  radial-gradient(700px 420px at 8% 90%, rgba(143,193,255,.05), transparent 60%),
  linear-gradient(165deg,var(--board-2),var(--board));
  color:var(--chalk);border-top:8px solid #7A5A3A;border-bottom:8px solid #7A5A3A}
.academie h2{color:#fff;max-width:20ch}
.academie .lead{color:var(--chalk-dim);max-width:62ch}
.chalk-tag{color:var(--craie-o)!important}
/* « des vidéos » barré à la craie, corrigé en manuscrit orange */
.strike-video{position:relative;white-space:nowrap}
.strike-video::after{content:"";position:absolute;left:-2%;right:-2%;top:54%;height:3px;background:var(--craie-b);transform:rotate(-2deg);border-radius:2px}
.script-o{display:block;font-family:"Caveat",cursive;color:var(--craie-o);font-size:1.18em;transform:rotate(-1.2deg);margin-top:2px}
/* tuiles ardoise */
.lab-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.lab{border:1.5px dashed rgba(242,244,237,.28);border-radius:14px;padding:20px 18px;background:rgba(255,255,255,.03);transition:transform .18s ease,background .18s ease,border-color .18s ease}
.lab:hover{transform:translateY(-4px);background:rgba(255,255,255,.07);border-color:rgba(242,244,237,.5)}
.lab i{font-size:26px;display:inline-block;margin-bottom:10px}
.lab .c-b{color:var(--craie-b)}
.lab .c-o{color:var(--craie-o)}
.lab h3{font-family:var(--disp);font-size:15.5px;font-weight:700;color:#fff;margin-bottom:7px;line-height:1.3}
.lab p{font-size:13px;color:var(--chalk-dim);line-height:1.55}
.lab-cta{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:32px;border-top:1.5px dashed rgba(242,244,237,.25);padding-top:24px}
.lab-cta p{color:var(--chalk-dim);font-size:15.5px;max-width:52ch}
.lab-cta b{color:#fff}
@media(max-width:960px){.lab-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.lab-grid{grid-template-columns:1fr}.lab-cta{flex-direction:column;align-items:flex-start}}