/* Palette lumineuse, reprise des affiches : bleu roi vif, jaune, orange, blanc */
:root{
  --g:#ffd60a;--g2:#ff9a1f;--b:#2f6bff;--r:#e5322d;--navy:#0a2c80;
  --bg:#1450c8;--tx:#fff;--mu:#d6e3ff;--acc:#ffd60a;--acc2:#ffb347;
  --card1:#2e6cf0;--card2:#1a48b8;--line:#ffffff40;--shadow:0 24px 60px #0a2c8055;
  --ease:cubic-bezier(.2,.8,.2,1);--expo:cubic-bezier(.77,0,.18,1);--lb:6vh}
.light{--bg:#f4f8ff;--tx:#0d2257;--mu:#4c5d8a;--acc:#1450c8;--acc2:#e86a00;
  --card1:#ffffff;--card2:#eef4ff;--line:#1450c824;--shadow:0 24px 60px #1450c81f}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--tx);font:400 17px/1.6 Inter,sans-serif;overflow-x:hidden}
body.intro-on{overflow:hidden}
img{display:block;max-width:100%}

/* ---------- Ouverture ---------- */
#intro{position:fixed;inset:0;z-index:300;background:radial-gradient(circle at 50% 40%,#2f6bff,#1450c8 45%,var(--navy));display:grid;place-content:center;justify-items:center;gap:26px;transition:opacity .7s,visibility .7s}
#intro.out{opacity:0;visibility:hidden}
.i-logo{position:relative;width:110px;height:110px;display:grid;place-items:center;animation:il 1.6s var(--ease) both}
.i-logo img{width:86px;border-radius:50%;box-shadow:0 0 60px #ffd60a88}
.i-ring{position:absolute;inset:-14px;border-radius:50%;border:2px solid var(--g);border-right-color:transparent;border-bottom-color:transparent;animation:sp 1.1s linear infinite}
@keyframes il{from{opacity:0;transform:scale(.6);filter:blur(12px)}}
@keyframes sp{to{transform:rotate(360deg)}}
.i-pre{font:500 13px Inter;letter-spacing:.5em;text-transform:uppercase;color:#fff;text-align:center}
.i-pre span{display:inline-block;animation:ip 1.6s var(--ease) both}.i-pre span+span{animation-delay:.35s;color:var(--g)}
@keyframes ip{from{opacity:0;letter-spacing:1.4em;filter:blur(8px)}}
.i-count{font:700 15px Fraunces,serif;color:var(--g);font-variant-numeric:tabular-nums}
.i-skip{position:absolute;bottom:calc(var(--lb) + 22px);right:5vw;background:#ffffff1a;border:1px solid #ffffff55;color:#fff;padding:8px 18px;border-radius:30px;font:500 12px Inter;letter-spacing:.15em;text-transform:uppercase;cursor:pointer;transition:.3s}
.i-skip:hover{color:var(--navy);background:var(--g);border-color:var(--g)}

/* Bandes cinémascope : fermées pendant l'intro, fines sur le hero, rangées ensuite */
.lb{position:fixed;left:0;right:0;height:50vh;background:var(--navy);z-index:250;pointer-events:none;transition:height 1.6s var(--expo)}
.lb-t{top:0}.lb-b{bottom:0}
body:not(.intro-on) .lb{height:var(--lb)}
body.past .lb{height:0;transition-duration:.9s}

#grain{position:fixed;inset:-100%;z-index:240;pointer-events:none;opacity:.045;background-image:var(--noise);animation:gr .9s steps(6) infinite}
@keyframes gr{0%{transform:translate(0,0)}20%{transform:translate(-6%,4%)}40%{transform:translate(4%,-7%)}60%{transform:translate(-3%,9%)}80%{transform:translate(8%,2%)}100%{transform:translate(-5%,-4%)}}
canvas#dust{position:fixed;inset:0;z-index:4;pointer-events:none}
#bar{position:fixed;top:0;left:0;height:3px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,var(--g),var(--g2),var(--r));z-index:275}

/* Curseur */
#cur,#curDot{position:fixed;left:0;top:0;pointer-events:none;z-index:280;border-radius:50%;display:none}
#cur{width:38px;height:38px;margin:-19px;border:2px solid var(--g2);box-shadow:0 0 0 1px #ffffff66;display:none;place-items:center;transition:width .4s var(--ease),height .4s var(--ease),margin .4s var(--ease),background .4s,border-color .4s}
#cur span{font:600 11px Inter;letter-spacing:.15em;text-transform:uppercase;color:var(--navy);opacity:0;transition:opacity .3s}
#curDot{width:6px;height:6px;margin:-3px;background:var(--g2)}
#cur.big{width:92px;height:92px;margin:-46px;background:var(--g);border-color:var(--g)}#cur.big span{opacity:1}
#cur.hov{width:64px;height:64px;margin:-32px;background:#ffd60a33}
@media(hover:hover) and (pointer:fine){#cur{display:grid}#curDot{display:block}}

/* ---------- Barre de navigation : capsule de verre flottante ---------- */
header{position:fixed;top:14px;left:0;right:0;z-index:270;padding:0 3vw;transform:translateY(-160%);transition:transform .9s var(--ease)}
body:not(.intro-on) header{transform:none;transition-delay:.9s}
body.past header{transition-delay:0s}
header.hide{transform:translateY(-160%)!important}
.nav-shell{position:relative;max-width:1280px;margin:auto;display:flex;align-items:center;gap:18px;padding:8px 8px 8px 12px;border-radius:999px;
  background:linear-gradient(135deg,#ffffff2e,#ffffff12);border:1px solid #ffffff55;backdrop-filter:blur(16px) saturate(1.5);-webkit-backdrop-filter:blur(16px) saturate(1.5);
  box-shadow:0 10px 40px #0a2c8033,inset 0 1px 0 #ffffff66;transition:background .5s,box-shadow .5s,border-color .5s,padding .5s}
.nav-shell::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(90deg,transparent 20%,var(--g) 50%,transparent 80%) 0 0/300% 100%;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:edge 6s linear infinite;pointer-events:none}
@keyframes edge{to{background-position:300% 0}}
body.past .nav-shell{background:#ffffffeb;border-color:#1450c822;box-shadow:0 14px 44px #0a2c802e}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;margin-right:auto;transition:color .5s}
.brand img{height:44px;width:44px;object-fit:cover;border-radius:50%;border:2px solid var(--g);box-shadow:0 0 0 4px #ffd60a33;animation:lg 8s ease-in-out infinite}
@keyframes lg{0%,80%,100%{transform:none}90%{transform:rotateY(180deg)}}
.b-txt{font:700 21px/1 Fraunces,serif;display:flex;flex-direction:column}.b-txt b{color:var(--g)}
.b-txt small{font:500 10px Inter;letter-spacing:.14em;text-transform:uppercase;opacity:.75;margin-top:5px}
body.past .brand{color:var(--navy)}body.past .b-txt b{color:var(--r)}
nav{position:relative;display:flex;align-items:center;gap:2px}
nav a{position:relative;z-index:1;color:#fff;text-decoration:none;font:500 14px Inter;padding:10px 15px;border-radius:999px;transition:color .35s}
nav a.on-pill{color:var(--navy)}
body.past nav a{color:var(--navy)}
.pill{position:absolute;z-index:0;top:50%;left:0;height:38px;margin-top:-19px;width:0;border-radius:999px;background:linear-gradient(135deg,var(--g),var(--g2));box-shadow:0 6px 20px #ff9a1f66;opacity:0;
  transition:transform .55s var(--ease),width .55s var(--ease),opacity .3s}
.cta{display:inline-flex!important;align-items:center;gap:10px;padding:12px 14px 12px 24px!important;position:relative;overflow:hidden}
.cta i{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--navy);color:var(--g);font-style:normal;transition:transform .4s var(--ease)}
.cta:hover i{transform:rotate(-45deg)}
.cta::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:-60%;background:linear-gradient(100deg,transparent,#ffffffaa,transparent);transform:skewX(-20deg);animation:shine 3.5s ease-in-out infinite}
@keyframes shine{0%,60%{left:-60%}100%{left:130%}}
.m-only{display:none!important}
.burger{display:none;width:46px;height:46px;border-radius:50%;border:0;background:var(--g);cursor:pointer;position:relative;flex:none}
.burger span{position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:var(--navy);transition:transform .4s var(--ease),opacity .3s}
.burger span:nth-child(1){top:16px}.burger span:nth-child(2){top:22px}.burger span:nth-child(3){top:28px}
.menu-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}.menu-open .burger span:nth-child(2){opacity:0}.menu-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.btn{display:inline-block;padding:13px 28px;border-radius:40px;background:linear-gradient(135deg,var(--g),var(--g2),var(--r));background-size:200%;color:var(--navy)!important;font-weight:600;text-decoration:none;transition:transform .4s var(--ease),box-shadow .3s,background-position .5s;box-shadow:0 8px 24px #ff9a1f44}
.btn:hover{background-position:100%;box-shadow:0 14px 40px #ff9a1f77}
.btn.ghost{background:#ffffff22;backdrop-filter:blur(6px);border:1.5px solid #fff;color:#fff!important;box-shadow:none}
.btn.ghost:hover{background:#fff;color:var(--navy)!important}
.light .btn.ghost{border-color:var(--acc);color:var(--acc)!important}

.kicker{color:var(--acc);letter-spacing:.25em;text-transform:uppercase;font-size:12px;font-weight:600;margin-bottom:18px}
.light .kicker{color:var(--acc2)}
.kicker .ch{font:italic 600 14px Fraunces,serif;letter-spacing:0;margin-right:12px;padding-right:12px;border-right:1px solid currentColor;color:var(--tx)}
em{font-style:italic;background:linear-gradient(90deg,var(--g),var(--g2),#ffe98a,var(--g2),var(--g));background-size:300%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sh 5s linear infinite}
.light em{background-image:linear-gradient(90deg,#e86a00,var(--r),#ff9a1f,var(--r),#e86a00)}
/* les lettres 3D du titre cassent background-clip:text : dégradé lettre par lettre */
h1 em .c{background:none;-webkit-text-fill-color:currentColor;color:color-mix(in srgb,var(--g2) calc(var(--j)/var(--n)*90%),var(--g));text-shadow:0 4px 30px #0a2c8066}
@keyframes sh{to{background-position:200%}}
h1,h2,h3{font-family:Fraunces,serif;line-height:1.05;font-weight:700}
h2{font-size:clamp(34px,5vw,68px);margin-bottom:24px}
.lead,.intro{color:var(--mu);max-width:560px;margin:24px 0 34px}
.row{display:flex;gap:14px;flex-wrap:wrap}
section{position:relative;z-index:2;background:var(--bg);color:var(--tx)}

/* ---------- HERO ---------- */
.hero{height:100vh;min-height:620px;display:flex;align-items:center;padding:110px 5vw 90px;overflow:hidden;isolation:isolate}
.slides{position:absolute;inset:0;z-index:-2;will-change:transform,filter}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.8s ease}
.slide.on{opacity:1;z-index:1}
.slide img{width:100%;height:100%;object-fit:cover}
.slide.on img,.slide.prev img{animation:kb 9s linear both}
.slide:nth-child(2n).on img,.slide:nth-child(2n).prev img{animation-name:kb2}
.slide:nth-child(3n).on img,.slide:nth-child(3n).prev img{animation-name:kb3}
@keyframes kb{from{transform:scale(1.25) translate(-3%,2%)}to{transform:scale(1.05) translate(2%,-1%)}}
@keyframes kb2{from{transform:scale(1.05) translate(3%,0)}to{transform:scale(1.28) translate(-2%,-3%)}}
@keyframes kb3{from{transform:scale(1.3) translate(0,-4%)}to{transform:scale(1.1) translate(-3%,3%)}}
.hero-shade{position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#1450c8dd 0%,#1450c877 40%,#1450c800 65%),linear-gradient(0deg,#1450c8 0%,transparent 28%)}
.flare{position:absolute;z-index:-1;width:70vw;height:70vw;right:-20vw;top:-30vw;border-radius:50%;background:radial-gradient(circle,#ffd60a66,#ff9a1f22 30%,transparent 60%);mix-blend-mode:screen;animation:fla 12s ease-in-out infinite alternate;pointer-events:none}
@keyframes fla{to{transform:translate(-25vw,30vh) scale(1.3);opacity:.6}}
.hero-txt{max-width:780px;will-change:transform,opacity}
.hero .kicker{color:var(--g)}
.hero .lead{color:#fff}
h1{font-size:clamp(42px,6.6vw,100px);perspective:800px;text-shadow:0 6px 30px #0a2c8066}
h1 .w{display:inline-block;transform-style:preserve-3d}
h1 .c{display:inline-block;opacity:0;transform:rotateX(-100deg) translateZ(-120px);transform-origin:50% 100%}
body:not(.intro-on) h1 .c{animation:ch 1.1s var(--ease) forwards;animation-delay:calc(var(--i)*40ms + .9s)}
@keyframes ch{to{opacity:1;transform:none}}
.k-in{opacity:0;transform:translateY(30px);filter:blur(8px);transition:opacity 1.2s,transform 1.2s var(--ease),filter 1.2s;transition-delay:var(--d,.7s)}
body:not(.intro-on) .k-in{opacity:1;transform:none;filter:none}
.alumni{display:inline-flex;align-items:center;gap:16px;margin-top:40px;padding:8px 20px 8px 8px;border-radius:999px;background:#ffffff26;border:1px solid #ffffff44;backdrop-filter:blur(8px)}
.av{display:flex}.av img{width:48px;height:48px;border-radius:50%;border:2px solid var(--g);margin-left:-14px;object-fit:cover;transition:transform .4s var(--ease)}
.av img:first-child{margin-left:0}.av:hover img{transform:translateY(-6px)}.av img:nth-child(2){transition-delay:.05s}.av img:nth-child(3){transition-delay:.1s}.av img:nth-child(4){transition-delay:.15s}
.alumni p{font-size:14px;color:#eef3ff;line-height:1.4}.alumni b{color:#fff}
.hero-ui{position:absolute;left:5vw;right:5vw;bottom:calc(var(--lb) + 22px);display:flex;justify-content:space-between;align-items:flex-end;gap:20px;z-index:3}
.cap{font:italic 500 16px Fraunces,serif;color:#fff;overflow:hidden;text-shadow:0 2px 10px #0a2c8088}
.cap::before{content:"";display:inline-block;width:34px;height:2px;background:var(--g);vertical-align:middle;margin-right:12px}
.cap.swap{animation:cs .9s var(--ease)}
@keyframes cs{0%{opacity:0;transform:translateY(100%);filter:blur(6px)}}
.dots{display:flex;gap:10px}
.dots button{width:44px;height:4px;border-radius:4px;border:0;background:#ffffff66;cursor:pointer;position:relative;overflow:hidden;padding:0}
.dots button::after{content:"";position:absolute;inset:0;background:var(--g);transform:scaleX(0);transform-origin:0 50%}
.dots button.on::after{animation:dp var(--dur,6.5s) linear forwards}
@keyframes dp{to{transform:scaleX(1)}}
.scroll{position:absolute;right:5vw;top:50%;writing-mode:vertical-rl;font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:#fff;text-decoration:none;display:flex;align-items:center;gap:12px;text-shadow:0 2px 10px #0a2c8088}
.scroll span{width:2px;height:70px;background:#ffffff55;position:relative;overflow:hidden}
.scroll span::after{content:"";position:absolute;left:0;top:-30%;width:2px;height:30%;background:var(--g);animation:sd 2s var(--expo) infinite}
@keyframes sd{to{top:100%}}

.marq{position:relative;z-index:3;overflow:hidden;background:linear-gradient(90deg,var(--g),var(--g2));padding:16px 0;transform:rotate(-1.2deg) scale(1.03);box-shadow:0 14px 40px #0a2c8033}
.marq div{display:flex;width:max-content;animation:mq 30s linear infinite}
.marq span{padding:0 36px;color:var(--navy);font:600 15px Fraunces,serif;white-space:nowrap}.marq span::before{content:"✦ ";color:var(--r)}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- Révélations ---------- */
.sec{padding:130px 5vw;perspective:1200px;text-align:center}
.sec .intro{margin-inline:auto}
.rv{opacity:0;transform:perspective(1000px) rotateX(35deg) translateY(80px) translateZ(-200px);transition:opacity 1s,transform 1.2s var(--ease);transition-delay:var(--d,0s)}
.rv.in{opacity:1;transform:none}
.sw .wm{display:inline-block;overflow:hidden;vertical-align:top;padding:0 .04em .12em;margin:0 -.04em -.12em}
.sw .wi{display:inline-block;transform:translateY(115%) rotate(8deg);transform-origin:0 100%;transition:transform 1.2s var(--ease);transition-delay:calc(var(--i)*80ms)}
.sw.in .wi{transform:none}
/* le clip est sur les enfants : un clip-path sur la cible empêche l'IntersectionObserver de la voir */
.rv-clip>*{clip-path:inset(100% 0 0 0);transition:clip-path 1.6s var(--expo)}
.rv-clip.in>*{clip-path:inset(0 0 0 0)}
.rv-clip>.tag{transition-delay:.6s}

.facts,.deck{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:30px;max-width:1150px;margin:50px auto 0;transform-style:preserve-3d}
.fact,.card,.cert,.ticket{background:linear-gradient(145deg,var(--card1),var(--card2));border:1px solid var(--line);border-radius:22px;position:relative;overflow:hidden;transform-style:preserve-3d;will-change:transform;box-shadow:var(--shadow)}
.fact::after,.card::after,.cert::after,.ticket::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at var(--mx,50%) var(--my,0%),#ffd60a33,transparent 55%);pointer-events:none}
.fact{padding:46px 20px}.fact strong{display:block;font:700 76px Fraunces,serif;color:var(--acc);transform:translateZ(60px);font-variant-numeric:tabular-nums}.fact i{font-style:normal}.fact span{color:var(--mu)}
.fact strong.sm{font-size:54px}

/* Histoire */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:6vw;align-items:center;text-align:left;max-width:none;padding-inline:max(5vw,calc((100vw - 1250px)/2))}
.split .intro{margin-inline:0}
.frame{position:relative;aspect-ratio:4/5;border-radius:24px;overflow:hidden;border:3px solid var(--g);box-shadow:0 40px 80px #0a2c8000;transition:box-shadow 1.6s}.frame.in{box-shadow:24px 24px 0 #ffd60a,0 40px 80px #0a2c8066}
.frame img{width:100%;height:120%;object-fit:cover;object-position:50% 20%;transform:scale(1.35);transition:transform 2.2s var(--expo),clip-path 1.6s var(--expo)}
.frame.in img{transform:scale(1.05)}
.frame::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#0a2c80cc,transparent 40%);pointer-events:none;opacity:0;transition:opacity 1.2s .8s}.frame.in::after{opacity:1}
.tag{position:absolute;left:22px;bottom:20px;right:22px;z-index:1;font:italic 500 15px Fraunces,serif;color:#fff}
.facts.mini{grid-template-columns:repeat(3,1fr);gap:16px;margin:30px 0 0}
.facts.mini .fact{padding:26px 10px;text-align:center}.facts.mini strong{font-size:50px}.facts.mini span{font-size:14px}

.quote-sec{padding:120px 5vw 140px;text-align:center;background:linear-gradient(180deg,var(--bg),#0f3fa8)}
blockquote{font:italic 500 clamp(32px,6vw,86px)/1.15 Fraunces,serif;max-width:1100px;margin:auto}
blockquote .qw{opacity:.25;transition:opacity .4s,color .4s;display:inline-block}
blockquote .qw.lit{opacity:1;color:var(--g)}
.quote-sec cite{display:block;margin-top:24px;font:400 14px Inter;color:var(--mu);font-style:normal;letter-spacing:.1em}

/* Cartes formations */
.card{text-align:left}
.card .ph{position:relative;aspect-ratio:4/3.4;overflow:hidden}
.card .ph img{width:100%;height:118%;object-fit:cover;object-position:50% 25%;transition:transform 1.2s var(--ease),filter 1.2s}
.card:hover .ph img{filter:saturate(1.2) brightness(1.05)}
.card .ph::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#0a2c8099,transparent 45%)}
.card .ph::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(110deg,transparent 40%,#ffffff77 50%,transparent 60%);transform:translateX(-120%);transition:transform 1.1s var(--ease)}
.card:hover .ph::before{transform:translateX(120%)}
.num{position:absolute;right:18px;bottom:6px;z-index:2;font:italic 700 80px/1 Fraunces,serif;color:transparent;-webkit-text-stroke:2px var(--g)}
.card .body{padding:22px 26px 30px;transform:translateZ(40px)}.card h3{font-size:32px;color:var(--acc)}.card small{color:var(--acc2);font-weight:600;display:block;margin:6px 0 12px}.card p{color:var(--mu);font-size:15px}

/* Interlude fenêtre */
.zoomwin{height:260vh;--p:0}
.zw-stick{position:sticky;top:0;height:100vh;overflow:hidden;display:grid;place-items:center}
.zw-frame{position:absolute;inset:0;clip-path:inset(calc((1 - var(--p))*26%) calc((1 - var(--p))*32%) round calc((1 - var(--p))*32px));will-change:clip-path}
.zw-frame img{width:100%;height:100%;object-fit:cover;transform:scale(calc(1.35 - var(--p)*.3))}
.zw-frame::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,#1450c855,#0a2c80bb);opacity:var(--p)}
.zw-txt{position:relative;text-align:center;padding:0 5vw;opacity:calc(var(--p)*2.2 - 1.2);transform:translateY(calc((1 - var(--p))*60px)) scale(calc(.9 + var(--p)*.1))}
.zw-txt .kicker{color:var(--g)}
.zw-big{font:700 clamp(38px,6.5vw,96px)/1.05 Fraunces,serif;text-shadow:0 6px 40px #0a2c80aa}

/* Escalier */
.stairs{display:flex;align-items:flex-end;justify-content:center;gap:14px;max-width:1000px;margin:70px auto 0;height:360px;transform:perspective(1100px) rotateX(14deg) rotateY(-14deg);transform-style:preserve-3d}
.step{position:relative;flex:1;height:calc(var(--h)*20% + 30px);background:linear-gradient(180deg,#3d7bff,#1450c8);border-radius:14px 14px 0 0;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;padding-top:16px;box-shadow:0 20px 50px #1450c844;transform:scaleY(0);transform-origin:50% 100%;transition:transform 1.1s var(--expo) var(--d)}
.stairs.in .step{transform:none}
.step b{font:700 38px Fraunces,serif;color:var(--g)}.step span{font-size:13px;color:#fff}
.step:nth-child(5){background:linear-gradient(180deg,var(--g),var(--g2))}.step:nth-child(5) b,.step:nth-child(5) span{color:var(--navy)}
.cap-toss{position:absolute;top:-70px;left:50%;width:56px;height:56px;margin-left:-28px;border-radius:50%;border:2px solid var(--g);opacity:0}
.stairs.in .cap-toss{animation:toss 3.2s var(--ease) 1.4s infinite}
@keyframes toss{0%{opacity:0;transform:translateY(60px) rotate(0)}20%{opacity:1}50%{transform:translateY(-40px) rotate(200deg)}80%{opacity:1;transform:translateY(0) rotate(360deg)}100%{opacity:0;transform:translateY(0) rotate(360deg)}}

/* Admission + bourses */
.deck.path{position:relative}
.path-line{position:absolute;left:5%;right:5%;top:50%;width:90%;height:60px;margin-top:-30px;z-index:-1;overflow:visible}
.path-line path{fill:none;stroke:var(--g);stroke-width:2;stroke-dasharray:6 10;vector-effect:non-scaling-stroke;opacity:.8;animation:dash 1.5s linear infinite}
@keyframes dash{to{stroke-dashoffset:-32}}
.cert{padding:60px 30px 40px;text-align:center}.cert i{position:absolute;top:18px;right:-34px;rotate:40deg;background:var(--g);color:var(--navy);padding:4px 40px;font:700 13px Fraunces,serif;font-style:normal}
.cert h3{font-size:28px;color:var(--acc);margin-bottom:12px;transform:translateZ(50px)}.cert p{color:var(--mu)}
.cert::before{content:"🎓";position:absolute;left:50%;top:-30px;font-size:44px;animation:fl 4s ease-in-out infinite;translate:-50% 0;opacity:.3}
@keyframes fl{50%{transform:translateY(26px) rotate(18deg)}}

/* Frais */
.fees{max-width:760px;margin:50px auto 0;display:grid;gap:12px;text-align:left}
.fees div{display:grid;grid-template-columns:50px 1fr;align-items:center;gap:14px}
.fees b{font:700 20px Fraunces,serif;color:var(--acc)}
.fees span{display:block;padding:9px 16px;border-radius:30px;background:linear-gradient(90deg,#1450c8,#3d7bff);color:#fff;box-shadow:inset -14px 0 0 var(--g);font-weight:600;font-size:14px;width:calc(var(--w)*1%);transform:scaleX(0);transform-origin:0 50%;transition:transform 1.4s var(--expo);white-space:nowrap}
.fees div:nth-child(2) span{transition-delay:.12s}.fees div:nth-child(3) span{transition-delay:.24s}.fees div:nth-child(4) span{transition-delay:.36s}.fees div:nth-child(5) span{transition-delay:.48s}
.fees.in span{transform:none}

/* Emploi du temps */
.week{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px;max-width:1150px;margin:50px auto 0;perspective:1200px}
.day{height:230px;perspective:900px;cursor:pointer;outline:0}
.day .in{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .9s var(--ease)}
.day:hover .in,.day:focus .in{transform:rotateY(180deg)}
.fr,.bk{position:absolute;inset:0;backface-visibility:hidden;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;box-shadow:var(--shadow)}
.fr{background:#fff;color:var(--navy)}.fr b{font:700 30px Fraunces,serif;color:#1450c8}.fr i{font-style:normal;color:var(--g2);font-size:26px;margin-top:8px;animation:sp 4s linear infinite}
.bk{transform:rotateY(180deg);background:linear-gradient(145deg,var(--g),var(--g2));color:var(--navy)}.bk ul{list-style:none;font-weight:600;font-size:14px;line-height:1.35}.bk li{margin:6px 0}

/* Galerie : bobine */
.film{--skew:0deg;background:linear-gradient(180deg,var(--bg),#0f3fa8)}
.film-stick{position:sticky;top:0;height:100vh;overflow:hidden;display:flex;flex-direction:column;justify-content:center;gap:4vh}
.film-head{padding:0 5vw;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;column-gap:40px}
.film-head h2{margin:0}.film-head .kicker{width:100%}
.film-hint{color:var(--mu);font-size:14px}
.film-track{display:flex;gap:28px;padding:0 5vw;width:max-content;will-change:transform}
.shot{position:relative;height:56vh;aspect-ratio:3/2;flex:none;cursor:zoom-in;padding:22px 0;background:#0a1a4a;border-radius:8px;transform:skewX(var(--skew));transition:transform .3s;box-shadow:0 30px 60px #0a2c8066}
.shot.tall{aspect-ratio:2/3.3}
.shot::before,.shot::after{content:"";position:absolute;left:8px;right:8px;height:10px;background:repeating-linear-gradient(90deg,transparent 0 8px,#ffd60a99 8px 18px);border-radius:2px}
.shot::before{top:6px}.shot::after{bottom:6px}
.shot img{width:100%;height:100%;object-fit:cover;object-position:50% 25%;filter:saturate(.7) brightness(.92);transition:filter .8s,transform 1.2s var(--ease)}
.shot:hover img,.shot.near img{filter:none}
.shot:hover img{transform:scale(1.04)}
.shot figcaption{position:absolute;left:0;bottom:-34px;font:italic 500 15px Fraunces,serif;color:#fff;white-space:nowrap}
.shot figcaption b{font:600 12px Inter;color:var(--g);margin-right:10px;letter-spacing:.1em}
.film-prog{margin:30px 5vw 0;height:3px;border-radius:3px;background:#ffffff33}
.film-prog span{display:block;height:100%;background:var(--g);transform:scaleX(0);transform-origin:0 50%}

/* Chapitre « Chômage zéro » */
.chapter{min-height:110vh;display:grid;place-items:center;text-align:center;overflow:hidden;padding:0 5vw;background:none}
.chapter-bg{position:absolute;inset:-15% 0;z-index:-1}
.chapter-bg img{width:100%;height:100%;object-fit:cover}
.chapter-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0f3fa8,#1450c899 30%,#1450c899 70%,#f4f8ff)}
.chapter .kicker{color:var(--g)}
.giant{font:700 clamp(60px,13vw,200px)/.95 Fraunces,serif;letter-spacing:-.02em;text-shadow:0 10px 50px #0a2c8088}
.chapter .intro{margin:28px auto 0;color:#fff;text-shadow:0 2px 12px #0a2c80aa}

/* Sites */
.ringwrap{height:420px;perspective:1100px;display:grid;place-items:center;cursor:grab;touch-action:pan-y}
.ring{width:240px;height:90px;position:relative;transform-style:preserve-3d}
.ring div{position:absolute;inset:0;display:grid;place-items:center;border-radius:14px;background:linear-gradient(145deg,#2e6cf0,#1450c8);color:#fff;font:600 22px Fraunces,serif;box-shadow:0 14px 40px #1450c844;border:2px solid var(--g);transform:rotateY(calc(var(--i)*45deg)) translateZ(380px);user-select:none}

/* FAQ */
.faq{max-width:780px;margin:50px auto 0;text-align:left}
.faq details{background:linear-gradient(145deg,var(--card1),var(--card2));border:1px solid var(--line);border-radius:16px;padding:20px 26px;margin-bottom:14px;transition:border-color .3s,transform .3s,background .3s;box-shadow:var(--shadow)}
.faq details[open]{border-color:var(--g);transform:scale(1.02)}
.faq summary{cursor:pointer;font:600 19px Fraunces,serif;color:var(--acc)}.faq p{color:var(--mu);margin-top:12px}
.faq details[open] p{animation:fq .6s var(--ease)}
@keyframes fq{from{opacity:0;transform:translateY(-10px)}}

/* Billet : carte bleue sur fond clair */
.ticket{--tx:#fff;--mu:#e3ecff;--acc:var(--g);color:var(--tx);max-width:850px;margin:auto;padding:80px 40px;isolation:isolate;border:2px solid var(--g)}
.ticket-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}
.ticket-bg img{width:100%;height:100%;object-fit:cover;animation:kb 18s ease-in-out infinite alternate}
.ticket-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(145deg,#1450c8dd,#0a2c80e6)}
.ticket .kicker{color:var(--g)}
.ticket em{background-image:linear-gradient(90deg,var(--g),var(--g2),#ffe98a,var(--g2),var(--g))}
.ticket .btn.ghost{border-color:#fff;color:#fff!important}
.ticket h2{margin-bottom:20px}.ticket p{color:var(--mu);margin-bottom:30px}.ticket .row{justify-content:center}

/* Pied de page */
.foot{position:relative;z-index:5;background:var(--navy);color:#c9d8ff;font-size:14px;padding:64px 5vw 0;border-top:4px solid var(--g)}
.foot-grid{max-width:1150px;margin:auto;display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:48px;padding-bottom:44px}
.foot-brand .brand,body.past .foot-brand .brand{color:#fff;margin:0 0 18px;display:inline-flex}
.foot .b-txt b,body.past .foot .b-txt b{color:var(--g)}
.foot .b-txt small{display:block}
.foot-brand p{max-width:380px;line-height:1.7}
.foot h4{font:600 12px Inter;letter-spacing:.2em;text-transform:uppercase;color:var(--g);margin-bottom:16px}
.foot ul{list-style:none;display:grid;gap:10px}
.foot a{color:#c9d8ff;text-decoration:none;transition:color .25s}
.foot ul a:hover{color:#fff}
.foot-bottom{max-width:1150px;margin:auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding:20px 0;border-top:1px solid #ffffff22;font-size:12px;color:#9fb4e6}

/* Visionneuse */
#lbx{position:fixed;inset:0;z-index:290;background:#0a2c80ee;backdrop-filter:blur(10px);display:grid;place-items:center;opacity:0;transition:opacity .5s}
#lbx.open{opacity:1}
#lbx[hidden]{display:none}
#lbxImg{position:fixed;left:0;top:0;transform-origin:0 0;border-radius:8px;box-shadow:0 30px 90px #0008;object-fit:cover;transition:transform .8s var(--expo),opacity .4s}
#lbxCap{position:fixed;bottom:5vh;left:0;right:0;text-align:center;font:italic 500 20px Fraunces,serif;color:var(--g)}
#lbx button{position:fixed;background:#ffffff26;border:1px solid #ffffff55;color:#fff;width:52px;height:52px;border-radius:50%;font-size:28px;line-height:1;cursor:pointer;transition:.3s}
#lbx button:hover{background:var(--g);color:var(--navy)}
.lx-close{top:4vh;right:4vw}.lx-prev{left:3vw;top:50%;margin-top:-26px}.lx-next{right:3vw;top:50%;margin-top:-26px}

/* ---------- Tablette : liens dans le menu ---------- */
@media(max-width:1100px){
  .cta{display:none!important}
  .burger{display:block}
  nav{position:fixed;inset:0;height:100vh;height:100dvh;flex-direction:column;justify-content:center;gap:6px;
    background:radial-gradient(circle at 80% 10%,#2f6bff,#1450c8 50%,var(--navy));clip-path:circle(0 at calc(100% - 40px) 40px);transition:clip-path .8s var(--expo);z-index:-1}
  .menu-open nav{clip-path:circle(150% at calc(100% - 40px) 40px)}
  nav a,body.past nav a{color:#fff;font:600 clamp(28px,7vw,44px) Fraunces,serif;opacity:0;transform:translateY(30px);transition:opacity .5s,transform .6s var(--ease),color .3s}
  .menu-open nav a{opacity:1;transform:none}
  nav a:hover,nav a.cur{color:var(--g)}
  .menu-open nav a:nth-child(2){transition-delay:.15s}.menu-open nav a:nth-child(3){transition-delay:.2s}.menu-open nav a:nth-child(4){transition-delay:.25s}.menu-open nav a:nth-child(5){transition-delay:.3s}.menu-open nav a:nth-child(6){transition-delay:.35s}.menu-open nav a:nth-child(7){transition-delay:.4s}.menu-open nav a:nth-child(8){transition-delay:.45s}.menu-open nav a:nth-child(9){transition-delay:.5s}
  nav .m-only{display:inline-block!important;margin-top:20px;font:600 17px Inter!important;color:var(--navy)!important}
  .pill{display:none}
  .menu-open .nav-shell{background:transparent;border-color:transparent;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}
  .menu-open .brand,.menu-open .b-txt b{color:#fff}
  .menu-open .nav-shell::before{display:none}
}

/* ---------- Mobile ---------- */
@media(max-width:860px){
  :root{--lb:3vh}
  header{top:10px}
  .b-txt small{display:none}.b-txt{font-size:19px}
  .hero{padding-top:100px;text-align:center;justify-content:center}
  .hero-shade{background:linear-gradient(0deg,#1450c8 8%,#1450c8bb 55%,#1450c855)}
  .hero .row{justify-content:center}.lead{margin-inline:auto}
  .alumni{flex-direction:column;gap:10px;border-radius:24px;padding:14px 18px}
  .hero-ui{justify-content:center}.cap{display:none}.scroll{display:none}
  .split{grid-template-columns:1fr;text-align:center}.split .intro{margin-inline:auto}
  .frame{max-width:420px;width:100%;margin:auto}.frame.in{box-shadow:12px 12px 0 #ffd60a,0 30px 60px #0a2c8066}
  .facts.mini strong{font-size:38px}
  .zoomwin{height:200vh}
  .stairs{height:280px;gap:6px}.step b{font-size:24px}
  .ring div{transform:rotateY(calc(var(--i)*45deg)) translateZ(260px)}.ring{width:200px}
  .film{height:auto!important}
  .film-stick{position:relative;height:auto;padding:110px 0}
  .film-track{width:auto;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:50px;transform:none!important;-webkit-overflow-scrolling:touch}
  .shot{height:46vh;scroll-snap-align:center;transform:none}
  .shot img{filter:none}
  .film-prog{display:none}
  .path-line{display:none}
  #lbx .lx-prev,#lbx .lx-next{top:auto;bottom:4vh}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv,.k-in,h1 .c,.sw .wi,.step,.fees span{opacity:1;transform:none;filter:none}
  .rv-clip>*{clip-path:none}
  #grain,canvas#dust,.flare{display:none}
  .zw-frame{clip-path:none}.zw-txt{opacity:1;transform:none}
  blockquote .qw{opacity:1}
  .flat .film-stick{position:relative;height:auto;padding:110px 0}
  .flat .film-track{width:auto;overflow-x:auto;transform:none!important;padding-bottom:50px}
}