/* Seuil · architecte d'intérieur (fictif, Douala) · ultra premium, beige et blanc · une seule famille : Funnel Display */
@font-face{font-family:"Funnel Display";src:url(fonts/funnel-display.woff2) format("woff2");font-weight:300 800;font-style:normal;font-display:swap}

:root{
  --fond:#f8f5ef;--blanc:#fdfcf9;--beige:#ece4d6;--sable:#d8ccb8;--ocre:#b08a63;
  --encre:#2a2622;--txt2:#665e54;--brun:#7d5838;
  --act:#4b2c40;--act-h:#633a55;
  --hair:rgba(42,38,34,.14);
  --hd:68px;--g:clamp(16px,4vw,64px);--max:1320px;
  --ease:cubic-bezier(.22,.68,.12,1);
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-padding-top:calc(var(--hd) + 12px);-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--fond);color:var(--encre);font-family:"Funnel Display",system-ui,sans-serif;font-weight:380;font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:clip}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,p,figure,blockquote,dl,dd,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--act);outline-offset:3px}
.skip{position:fixed;left:12px;top:-60px;z-index:100;background:var(--encre);color:var(--fond);padding:10px 14px;text-decoration:none;transition:top .2s}
.skip:focus{top:12px}

/* action : l'aubergine ne sert qu'aux boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 26px;background:var(--act);color:#fff;border:0;border-radius:999px;font:inherit;font-weight:540;font-size:16px;letter-spacing:.01em;text-decoration:none;cursor:pointer;position:relative;overflow:hidden;isolation:isolate}
.btn::after{content:"";position:absolute;left:50%;top:50%;width:140%;aspect-ratio:1;border-radius:50%;background:var(--act-h);transform:translate(-50%,-50%) scale(0);transition:transform .6s var(--ease);z-index:-1}
.btn:hover::after,.btn:focus-visible::after{transform:translate(-50%,-50%) scale(1)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.lnk{font:inherit;font-weight:500;background:none;border:0;padding:4px 0;color:var(--encre);text-decoration:none;cursor:pointer;background-image:linear-gradient(currentColor,currentColor);background-size:100% 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .5s var(--ease)}
.lnk:hover{background-size:30% 1px}
.kicker,.label{font-size:12.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--brun)}
.h2{font-size:clamp(40px,5.4vw,84px);font-weight:300;line-height:.98;letter-spacing:-.04em}

/* en-tête : transparent, se pose au premier défilement (calque en opacité) */
.hd{position:fixed;left:0;right:0;top:0;z-index:50;height:var(--hd)}
.hd::before{content:"";position:absolute;inset:0;background:rgba(248,245,239,.96);border-bottom:1px solid var(--hair);opacity:0;transition:opacity .5s var(--ease)}
.hd.is-scrolled::before{opacity:1}
.hd-in{position:relative;max-width:var(--max);margin:0 auto;height:100%;padding:0 var(--g);display:flex;align-items:center;justify-content:space-between;gap:24px}
.mark{display:flex;align-items:baseline;gap:14px;text-decoration:none}
.mark-n{font-size:25px;font-weight:640;letter-spacing:-.035em}
.mark-s{font-size:14px;color:var(--txt2)}
.nav{display:flex;align-items:center;gap:36px}
.nav ul{display:flex;gap:30px}
.nav ul a{text-decoration:none;font-size:15px;font-weight:440;padding:6px 0;background-image:linear-gradient(var(--ocre),var(--ocre));background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .5s var(--ease)}
.nav ul a:hover,.nav ul a.is-here{background-size:100% 1px}
.menu-b{display:none}

/* ---------- ouverture : l'enfilade ---------- */
.op{--ov:60vh;position:relative;height:calc(225vh + var(--ov));background:#f3eee4}
.op-pin{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;display:flex;flex-direction:column;transform-origin:50% 30%;will-change:transform,opacity;padding:calc(var(--hd) + clamp(12px,3vh,36px)) 0 clamp(20px,4vh,44px)}
.op-top{position:relative;z-index:1;max-width:var(--max);width:100%;margin:0 auto;padding:0 var(--g);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:24px 56px;align-items:end}
.op-head{display:flex;flex-direction:column;gap:18px}
.op-t{font-size:clamp(44px,5.6vw,96px);font-weight:300;line-height:.94;letter-spacing:-.05em}
.op-l{display:block;overflow-x:visible;overflow-y:clip;padding-bottom:.07em}
.op-l>span{display:inline-block;will-change:transform}
.op-side{display:flex;flex-direction:column;gap:16px;align-items:flex-start;padding-bottom:.4em}
.lead{font-size:clamp(17px,1.3vw,19px);line-height:1.5;color:var(--txt2)}
.op-win{flex:1;min-height:0;margin-top:clamp(20px,4vh,48px);position:relative;z-index:1}
.op-track{position:absolute;left:0;top:0;bottom:0;display:flex;gap:clamp(18px,2.6vw,44px);align-items:stretch;will-change:transform;padding:0 var(--g)}
.op-it{height:100%;flex:none}
.op-it figure{height:100%;display:flex;flex-direction:column;gap:10px}
.op-im{flex:1;min-height:0;aspect-ratio:var(--r);overflow:hidden;background:var(--beige);box-shadow:0 30px 60px -34px rgba(42,38,34,.5)}
.op-im img{width:100%;height:100%;object-fit:cover;transform:translate3d(var(--px,0px),0,0) scale(1.14);will-change:transform}
.op-it figcaption{display:flex;gap:10px;align-items:baseline;font-size:14px;font-weight:460;white-space:nowrap;width:0;min-width:100%;overflow:hidden;text-overflow:ellipsis}
.op-it figcaption span{color:var(--txt2);font-weight:380}
.op-it figcaption span::before{content:"·";margin-right:10px;color:var(--ocre)}

/* lumière : une tache claire et l'ombre de persiennes qui glissent avec le défilement */
.lum{position:absolute;z-index:0;top:-15%;left:0;width:95vw;height:130%;pointer-events:none;transform:translate3d(var(--lx2,0px),0,0);will-change:transform;background:radial-gradient(closest-side,rgba(255,254,250,.98),rgba(255,254,250,.55) 45%,rgba(255,254,250,0))}
.lum::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(104deg,rgba(255,255,255,0) 0 54px,rgba(255,255,255,.6) 54px 92px);-webkit-mask-image:radial-gradient(closest-side,#000 20%,transparent);mask-image:radial-gradient(closest-side,#000 20%,transparent)}
.bk-stage>*:not(.lum):not(.bk-live){position:relative;z-index:1}
.bk-book::after{content:"";position:absolute;left:-6%;right:-6%;bottom:-9%;height:16%;background:radial-gradient(closest-side,rgba(42,38,34,.22),rgba(42,38,34,0));z-index:-1;pointer-events:none}

/* ---------- le livre : avant, après ---------- */
.bk{position:relative;z-index:2;margin-top:calc(var(--ovb,60vh) * -1);background:var(--blanc);box-shadow:0 -50px 90px -50px rgba(42,38,34,.35)}
.bk-hd{max-width:var(--max);margin:0 auto;padding:clamp(96px,16vh,180px) var(--g) clamp(32px,6vh,64px);display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:end}
.bk-hd p{color:var(--txt2);font-size:18px;max-width:42ch}
.bk-pin{position:relative;height:calc(var(--n) * 150vh + 100vh)}
.bk-stage{position:sticky;top:0;height:100vh;height:100svh;background:#f6f2ea;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(14px,2.4vh,26px);padding:calc(var(--hd) + 8px) var(--g) 24px;overflow:hidden}
.bk-nav{display:flex;gap:4px;padding:4px;border:1px solid var(--hair);border-radius:999px;background:var(--fond)}
.bk-b{font:inherit;font-size:14px;font-weight:460;color:var(--txt2);background:none;border:0;border-radius:999px;padding:8px 16px;cursor:pointer;transition:color .4s,background-color .4s}
.bk-b:hover{color:var(--encre)}
.bk-b[aria-pressed="true"]{background:var(--encre);color:var(--fond)}
.bk-live{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.bk-book{--ph:min(64svh,660px,calc(100svh - var(--hd) - 170px),calc((100vw - 2 * var(--g)) * .62));--pw:calc(var(--ph) * .8);position:relative;width:calc(var(--pw) * 2);height:var(--ph)}
.bk-pair{position:absolute;inset:0;opacity:0;visibility:hidden;transform-origin:50% 50%;perspective:1700px;perspective-origin:50% 50%}
.bk-pair.is-cur{opacity:1;visibility:visible}
.bk-l,.bk-cap,.bk-r{position:absolute;top:0;width:var(--pw);height:var(--ph)}
.bk-l{left:0;overflow:hidden;background:var(--beige);box-shadow:0 34px 60px -36px rgba(42,38,34,.55)}
.bk-l img,.bk-face img{width:100%;height:100%;object-fit:cover}
.bk-cast{position:absolute;inset:0;background:linear-gradient(90deg,rgba(42,38,34,0) 30%,rgba(42,38,34,.38));opacity:0;pointer-events:none}
.bk-cap{left:var(--pw);background:var(--fond);padding:clamp(24px,3.4vw,52px);display:flex;flex-direction:column;justify-content:flex-end;gap:14px}
.bk-pl{font-size:12.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun)}
.bk-cap h3{font-size:clamp(34px,3.4vw,54px);font-weight:300;letter-spacing:-.035em;line-height:1}
.bk-cap>p:not(.bk-pl){color:var(--txt2);max-width:36ch}
.bk-cap dl{display:flex;gap:28px;border-top:1px solid var(--hair);padding-top:14px}
.bk-cap dt{font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun)}
.bk-cap dd{font-size:15px}
.bk-r{left:var(--pw);transform-origin:0 50%;transform-style:preserve-3d;will-change:transform}
.bk-face{position:absolute;inset:0;overflow:hidden;box-shadow:0 34px 60px -36px rgba(42,38,34,.55);backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--beige)}
.bk-back{transform:rotateY(180deg)}
.bk-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(42,38,34,.34),rgba(42,38,34,0) 70%);opacity:0;pointer-events:none}
.bk-back .bk-shade{background:linear-gradient(270deg,rgba(42,38,34,.34),rgba(42,38,34,0) 70%)}
.bk-spine{position:absolute;z-index:3;left:50%;top:-14px;bottom:-14px;width:1px;background:var(--encre);opacity:.5;pointer-events:none}
.bk-lab{display:flex;width:min(calc(var(--pw,300px) * 2),100%);font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--txt2)}
.bk-lab span{flex:1}
.bk-lab .bk-lb{padding-left:18px}
.bk-lab .bk-la{text-align:right;padding-right:18px}
.bk-lab span{transition:opacity .4s}

/* ---------- l'atelier ---------- */
.at{max-width:var(--max);margin:0 auto;padding:clamp(100px,16vh,180px) var(--g);display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4.4fr);gap:clamp(40px,7vw,120px);align-items:center}
.at-txt{display:flex;flex-direction:column;gap:36px}
.at-big{font-size:clamp(26px,2.5vw,38px);font-weight:300;line-height:1.24;letter-spacing:-.02em}
.at-q{border-left:1px solid var(--ocre);padding-left:24px;display:flex;flex-direction:column;gap:10px}
.at-q p{font-size:20px;font-weight:400}
.at-q footer{font-size:15px;color:var(--txt2)}
.at-q strong{color:var(--encre);font-weight:560}
.at-dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;border-top:1px solid var(--hair);padding-top:20px}
.at-dl dt{font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun);margin-bottom:4px}
.at-dl dd{font-size:15px;color:var(--txt2)}
.at-fig{position:relative;display:flex;flex-direction:column;gap:12px}
.at-car{transform:translate3d(0,var(--py,0px),0);box-shadow:0 34px 70px -40px rgba(42,38,34,.55)}
.at-over{position:absolute;z-index:2;width:42%;left:-16%;bottom:14%;aspect-ratio:1;overflow:hidden;border:8px solid var(--fond);box-shadow:0 30px 60px -28px rgba(42,38,34,.5);transform:translate3d(0,var(--py,0px),0)}
.at-over img{width:100%;height:100%;object-fit:cover}
.at-car{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--beige)}
.at-car img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.04);transition:opacity 1.4s var(--ease),transform 6s linear}
.at-car img.is-cur{opacity:1;transform:scale(1)}
.at-fig figcaption{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:14px;color:var(--txt2)}
.pz{display:inline-flex;align-items:center;gap:8px;font:inherit;font-size:13px;color:var(--encre);background:none;border:1px solid var(--hair);border-radius:999px;padding:6px 12px 6px 10px;cursor:pointer;flex:none}
.pz-i{width:10px;height:10px;position:relative}
.pz-i::before,.pz-i::after{content:"";position:absolute;top:0;bottom:0;width:3px;background:currentColor}
.pz-i::before{left:1px}.pz-i::after{right:1px}
.pz[aria-pressed="true"] .pz-i::before{left:1px;width:0;height:0;background:none;border-left:9px solid currentColor;border-top:5px solid transparent;border-bottom:5px solid transparent}
.pz[aria-pressed="true"] .pz-i::after{display:none}

/* ---------- services ---------- */
.sv{position:relative;overflow:hidden}
.sv::before,.ct::before{content:"";position:absolute;inset:0;background:var(--beige);transition:transform 1.6s var(--ease)}
.ct::before{background:var(--blanc)}
.js .sv::before,.js .ct::before{transform:scaleX(.9) translateY(40px)}
.js .sv.is-seen::before,.js .ct.is-seen::before{transform:none}
.sv-stripes{position:absolute;left:0;right:0;top:-25%;bottom:-25%;background:repeating-linear-gradient(112deg,rgba(255,253,247,0) 0 70px,rgba(255,253,247,.5) 70px 130px);-webkit-mask-image:radial-gradient(55% 45% at 72% 38%,#000,transparent);mask-image:radial-gradient(55% 45% at 72% 38%,#000,transparent);transform:translate3d(0,var(--sy,0px),0);pointer-events:none}
.sv-in{position:relative}
.sv-in{max-width:var(--max);margin:0 auto;padding:clamp(100px,15vh,170px) var(--g)}
.sv-hd{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:end;margin-bottom:clamp(40px,7vh,72px)}
.sv-hd p{color:var(--txt2);font-size:18px;max-width:40ch}
.sv-hd .h2{max-width:13ch}
.sv-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,2.6vw,44px)}
.sv-it:nth-child(2){margin-top:clamp(40px,8vh,96px)}
.sv-a{display:flex;flex-direction:column;gap:12px;text-decoration:none}
.sv-im{position:relative;display:block;aspect-ratio:3/4;overflow:hidden;background:var(--sable);margin-bottom:8px}
.sv-im img{width:100%;height:100%;object-fit:cover}
.sv-n{font-size:clamp(26px,2.3vw,34px);font-weight:340;letter-spacing:-.03em;line-height:1.05}
.sv-d{color:var(--txt2);font-size:16px}
.sv-t{display:flex;gap:10px;align-items:baseline;font-size:15px;border-top:1px solid var(--hair);padding-top:12px;font-variant-numeric:tabular-nums}
.sv-t span{font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun)}
.sv-go{font-size:15px;font-weight:500;width:max-content;background-image:linear-gradient(var(--encre),var(--encre));background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;padding-bottom:3px;transition:background-size .5s var(--ease)}
.sv-go::after{content:" →"}
.sv-a:hover .sv-go,.sv-a:focus-visible .sv-go{background-size:100% 1px}
/* révélation : un voile clair qui remonte */
.js .sv-im::after{content:"";position:absolute;inset:0;background:var(--beige);transform-origin:top;transition:transform 1.2s var(--ease)}
.js .sv-it.is-seen .sv-im::after{transform:scaleY(0)}
.js .sv-it:nth-child(2) .sv-im::after{transition-delay:.12s}
.js .sv-it:nth-child(3) .sv-im::after{transition-delay:.24s}
.sv-im{box-shadow:0 30px 60px -36px rgba(42,38,34,.5)}
.sv-im img,.me-i img{transform:translate3d(0,var(--py,0px),0) scale(1.14);will-change:transform}

/* ---------- méthode ---------- */
.me{max-width:var(--max);margin:0 auto;padding:clamp(100px,15vh,170px) var(--g);display:grid;grid-template-columns:minmax(0,4.4fr) minmax(0,7fr);gap:clamp(40px,7vw,120px)}
.me-stick{position:sticky;top:calc(var(--hd) + 48px);display:flex;flex-direction:column;gap:24px;align-items:flex-start}
.me-stick p{color:var(--txt2);max-width:34ch}
.me-list{display:flex;flex-direction:column}
.me-s{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(20px,3vw,44px);padding:32px 0;border-top:1px solid var(--hair);align-items:center}
.me-s:last-child{border-bottom:1px solid var(--hair)}
.me-i{overflow:hidden;background:var(--beige)}
.me-i img{width:100%;aspect-ratio:5/4;object-fit:cover}
.me-tx{display:flex;flex-direction:column;gap:10px}
.me-k{font-size:12.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun);display:flex;gap:12px;flex-wrap:wrap}
.me-k span{color:var(--txt2);font-weight:440;letter-spacing:.06em;text-transform:none}
.me-tx h3{font-size:clamp(24px,2.1vw,32px);font-weight:340;letter-spacing:-.025em;line-height:1.1}
.me-tx p:last-child{color:var(--txt2);font-size:16px}
.js .me-s{opacity:0;transform:translate3d(0,28px,0);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .me-s.is-seen{opacity:1;transform:none}

/* ---------- contact ---------- */
.ct{position:relative;overflow:hidden}
.ct-in{position:relative}
.ct-in{max-width:var(--max);margin:0 auto;padding:clamp(100px,15vh,170px) var(--g);display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(40px,7vw,120px)}
.ct-side{display:flex;flex-direction:column;gap:28px}
.ct-p{max-width:40ch;color:var(--txt2)}
.ct-dl{display:flex;flex-direction:column;border-top:1px solid var(--hair)}
.ct-dl div{display:grid;grid-template-columns:104px minmax(0,1fr);gap:16px;padding:12px 0;border-bottom:1px solid var(--hair)}
.ct-dl dt{font-size:11.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun);padding-top:3px}
.ct-main{position:relative}
.fm{display:flex;flex-direction:column;gap:6px}
.fm-row{display:flex;flex-direction:column;gap:6px;border:0;margin:0;padding:0 0 10px;min-width:0}
.fm-row label,.fm-row legend{font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--encre);padding:0}
.opt{color:var(--txt2);font-weight:440;letter-spacing:.06em;text-transform:none;margin-left:6px}
.fm input[type=text],.fm input[type=email],.fm textarea{font:inherit;font-size:18px;color:var(--encre);background:transparent;border:0;border-bottom:1px solid #b5ab9c;border-radius:0;padding:10px 0;width:100%;background-image:linear-gradient(var(--encre),var(--encre));background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .5s var(--ease)}
.fm textarea{resize:vertical;min-height:110px}
.fm input::placeholder{color:#6f675c}
.fm input:focus,.fm textarea:focus{outline:none;background-size:100% 1px}
.fm input:focus-visible,.fm textarea:focus-visible{outline:2px solid var(--act);outline-offset:4px}
.fm [aria-invalid="true"]{border-bottom-color:#8a3f22}
.fm-e{font-size:14px;color:#8a3f22;min-height:1.3em}
.fm-type legend{margin-bottom:10px}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg label{position:relative;cursor:pointer;text-transform:none;letter-spacing:0;font-size:15px;font-weight:440}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg span{display:inline-block;padding:9px 18px;border:1px solid #b5ab9c;border-radius:999px;font-size:15px;font-weight:440;transition:background-color .35s,color .35s,border-color .35s}
.seg input:checked+span{background:var(--encre);border-color:var(--encre);color:var(--fond)}
.seg input:focus-visible+span{outline:2px solid var(--act);outline-offset:3px}
.fm-go{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:18px}
.fm-note{font-size:14px;color:var(--txt2)}
.ok{display:grid;grid-template-columns:120px minmax(0,1fr);gap:36px;align-items:start;padding:40px 0;border-top:1px solid var(--encre)}
.ok:focus{outline:none}
.ok-svg{width:120px;height:120px;fill:none;stroke:var(--encre);stroke-width:1.4;stroke-linecap:square}
.ok-sill{stroke:var(--ocre);stroke-width:2}
.ok-door,.ok-sill,.ok-leaf{stroke-dasharray:1;stroke-dashoffset:1}
.ok.is-drawn .ok-door{animation:draw 1.1s var(--ease) forwards}
.ok.is-drawn .ok-sill{animation:draw .7s var(--ease) .1s forwards}
.ok.is-drawn .ok-leaf{animation:draw .9s var(--ease) .7s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.ok-tx{display:flex;flex-direction:column;gap:14px;max-width:46ch}
.ok-t{font-size:clamp(34px,3.6vw,54px);font-weight:300;letter-spacing:-.035em;line-height:1}
.ok-dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 20px;border-top:1px solid var(--hair);padding-top:14px;font-size:15px}
.ok-dl dt{font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brun);padding-top:3px}
.ok-m{font-size:14px;color:var(--txt2)}
.ok-tx .lnk{align-self:flex-start}
.ok-tx>*{opacity:0;transform:translateY(10px)}
.ok.is-drawn .ok-tx>*{animation:okIn .8s var(--ease) forwards}
.ok.is-drawn .ok-tx>*:nth-child(2){animation-delay:.1s}
.ok.is-drawn .ok-tx>*:nth-child(3){animation-delay:.2s}
.ok.is-drawn .ok-tx>*:nth-child(4){animation-delay:.3s}
.ok.is-drawn .ok-tx>*:nth-child(5){animation-delay:.4s}
.ok.is-drawn .ok-tx>*:nth-child(6){animation-delay:.5s}
@keyframes okIn{to{opacity:1;transform:none}}

/* ---------- pied de page ---------- */
.ft{background:var(--fond);overflow:hidden;border-top:1px solid var(--hair)}
.ft-big{max-width:var(--max);margin:0 auto;padding:clamp(24px,5vh,56px) var(--g) 0;font-size:clamp(120px,37vw,560px);line-height:.86;font-weight:300;letter-spacing:-.06em;color:var(--sable);user-select:none}
.ft-big::before{content:"Seuil"}
.ft-in{max-width:var(--max);margin:0 auto;padding:36px var(--g) 32px;display:grid;grid-template-columns:minmax(0,4fr) minmax(0,3fr) minmax(0,5fr);gap:32px;font-size:14px;color:var(--txt2)}
.ft-n{font-size:20px;font-weight:640;letter-spacing:-.03em;color:var(--encre);margin-bottom:6px}
.ft-nav{display:flex;flex-direction:column;gap:4px}
.ft-nav a{text-decoration:none;color:var(--encre);width:max-content;padding:2px 0}
.ft-nav a:hover{text-decoration:underline;text-underline-offset:3px}
.ft-c{display:flex;flex-direction:column;gap:8px}

/* ---------- révélations ---------- */
.js .rv{opacity:0;transform:translate3d(0,20px,0);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .rv.is-seen{opacity:1;transform:none}
.js .op-l>span{transform:translate3d(0,105%,0);transition:transform 1.2s var(--ease)}
.js .op-l2>span{transition-delay:.12s}
.js.is-ready .op-l>span{transform:translate3d(var(--lx,0px),0,0)}
.js.is-live .op-l>span{transition:none}
.js .op-side,.js .op-track{opacity:0;transition:opacity 1.2s var(--ease) .3s}
.js.is-ready .op-side,.js.is-ready .op-track{opacity:1}

/* ---------- téléphone ---------- */
@media (max-width:899px){
  :root{--hd:58px}
  body{font-size:16px}
  .mark-s{display:none}
  .menu-b{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 4px 0 12px;font:inherit;font-size:15px;font-weight:500;background:none;border:0;color:var(--encre);cursor:pointer}
  .menu-i{width:20px;height:9px;position:relative}
  .menu-i::before,.menu-i::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:transform .35s var(--ease)}
  .menu-i::before{top:0}.menu-i::after{bottom:0}
  .menu-b[aria-expanded="true"] .menu-i::before{transform:translateY(3.75px) rotate(45deg)}
  .menu-b[aria-expanded="true"] .menu-i::after{transform:translateY(-3.75px) rotate(-45deg)}
  .nav{position:fixed;left:0;right:0;top:var(--hd);background:var(--fond);flex-direction:column;align-items:stretch;gap:20px;padding:8px var(--g) 28px;border-bottom:1px solid var(--hair);transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .3s,transform .4s var(--ease),visibility 0s .4s}
  .nav.is-open{opacity:1;transform:none;visibility:visible;transition:opacity .3s,transform .4s var(--ease)}
  .hd:has(.nav.is-open)::before{opacity:1}
  .nav ul{flex-direction:column;gap:0}
  .nav ul a{display:block;font-size:26px;font-weight:300;padding:12px 0;border-bottom:1px solid var(--hair);background:none}

  .op{--ov:50vh;height:calc(200vh + var(--ov))}
  .bk{--ovb:50vh}
  .at-over{width:38%;left:auto;right:4%;bottom:auto;top:62%}
  .op-top{grid-template-columns:minmax(0,1fr);gap:14px}
  .op-t{font-size:clamp(40px,11.6vw,56px)}
  .op-side{gap:10px}
  .lead{font-size:16px}
  .op-win{margin-top:20px}
  .op-it figcaption{font-size:13px}
  .at,.me{padding-top:72px;padding-bottom:72px}
  .sv-in,.ct-in{padding-top:72px;padding-bottom:72px}

  .bk-hd{grid-template-columns:minmax(0,1fr);gap:16px;padding-top:88px}
  .bk-stage{justify-content:flex-start;gap:12px;padding-top:calc(var(--hd) + 10px)}
  .bk-nav{max-width:100%;overflow-x:auto;scrollbar-width:none;flex:none}
  .bk-nav::-webkit-scrollbar{display:none}
  .bk-b{padding:8px 12px;white-space:nowrap;flex:none}
  /* livre vertical : l'avant en haut, la page du bas se replie vers le haut */
  .bk-book{--pw:min(calc(100vw - 2 * var(--g)),calc((100svh - var(--hd) - 150px) * .665));--ph:calc(var(--pw) * .75);width:var(--pw);height:calc(var(--ph) * 2)}
  .bk-l,.bk-cap,.bk-r{width:var(--pw);height:var(--ph)}
  .bk-cap{left:0;top:var(--ph);padding:18px 4px 0;justify-content:flex-start;gap:8px;background:transparent}
  .bk-cap h3{font-size:30px}
  .bk-cap>p:not(.bk-pl){font-size:15px;line-height:1.45}
  .bk-cap dl{gap:20px;padding-top:10px}
  .bk-r{left:0;top:var(--ph);transform-origin:50% 0}
  .bk-back{transform:rotateX(180deg)}
  .bk-shade{background:linear-gradient(180deg,rgba(42,38,34,.34),rgba(42,38,34,0) 70%)}
  .bk-back .bk-shade{background:linear-gradient(0deg,rgba(42,38,34,.34),rgba(42,38,34,0) 70%)}
  .bk-cast{background:linear-gradient(180deg,rgba(42,38,34,0) 30%,rgba(42,38,34,.38))}
  .bk-spine{left:-8px;right:-8px;top:50%;bottom:auto;width:auto;height:1px}
  .bk-lab{display:none}

  .at{grid-template-columns:minmax(0,1fr);gap:40px}
  .at-dl{grid-template-columns:minmax(0,1fr);gap:12px}
  .at-dl div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:12px}
  .sv-hd,.ct-in,.me{grid-template-columns:minmax(0,1fr)}
  .sv-hd{gap:16px}
  .sv-list{grid-template-columns:minmax(0,1fr);gap:56px}
  .sv-it:nth-child(2){margin-top:0}
  .sv-im{aspect-ratio:4/3}
  .me{gap:32px}
  .me-stick{position:static}
  .me-s{grid-template-columns:minmax(0,1fr);gap:16px;padding:24px 0}
  .ok{grid-template-columns:minmax(0,1fr);gap:20px}
  .ok-svg{width:84px;height:84px}
  .ft-in{grid-template-columns:minmax(0,1fr);gap:24px}
  .ft-nav{flex-direction:row;flex-wrap:wrap;gap:4px 18px}
}

/* mouvement réduit : rien ne bouge, tout est visible ; le livre devient des doubles pages ouvertes */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
  .js .rv,.js .me-s,.js .op-side,.js .op-track{opacity:1;transform:none}
  .js .op-l>span{transform:none}
  .op{height:auto}
  .bk{margin-top:0}
  .lum,.sv-stripes{display:none}
  .js .sv::before,.js .ct::before{transform:none}
  .op-pin{transform:none!important;opacity:1!important}
  .op-pin{position:relative;height:auto;min-height:100svh}
  .op-win{flex:none;height:min(56svh,520px);overflow-x:auto}
  .op-track{transform:none!important}
  .op-im img{transform:none!important}
  .bk-pin{height:auto}
  .bk-stage{position:relative;height:auto;padding:24px var(--g) 80px;gap:72px}
  .bk-nav,.bk-lab,.bk-spine{display:none}
  .bk-book{height:auto;display:flex;flex-direction:column;gap:72px}
  .bk-pair,.bk-pair.is-cur{position:relative;opacity:1!important;visibility:visible!important;display:grid;grid-template-columns:var(--pw) var(--pw);grid-template-rows:var(--ph) auto}
  .bk-l,.bk-r{position:relative;left:auto;top:auto;transform:none!important}
  .bk-r{grid-column:2;grid-row:1}
  .bk-back,.bk-shade,.bk-cast{display:none}
  .bk-cap{position:relative;left:auto;top:auto;grid-column:1 / -1;grid-row:2;width:auto;height:auto;padding:24px 0 0;background:none}
  .js .sv-im::after{display:none}
  .js .sv-im img{transform:none}
  .ok-door,.ok-sill,.ok-leaf{stroke-dashoffset:0}
  .ok-tx>*{opacity:1;transform:none}
  .at-car img{transition:none}
}
@media (prefers-reduced-motion:reduce) and (max-width:899px){
  .bk-pair,.bk-pair.is-cur{grid-template-columns:var(--pw);grid-template-rows:var(--ph) var(--ph) auto}
  .bk-r{grid-column:1;grid-row:2}
  .bk-cap{grid-row:3}
}