/* ============================================================
   NyxStudio — landing
   Palette : la nuit passée à l'encre, sur porcelaine froide.
   ============================================================ */

:root{
  --nuit:#131427;
  --nuit-2:#2C2E4B;
  --gris:#6B6E8C;
  --gris-clair:#9497B0;
  --trait:#E3E4EF;
  --trait-fort:#D3D5E4;
  --papier:#F3F4F9;
  --papier-2:#EDEEF6;
  --blanc:#FFFFFF;
  --iris:#4536E0;
  --iris-2:#6C5CF5;
  --iris-pale:#EDEBFD;
  --ambre:#C98A2E;
  --ambre-pale:#FAF1E2;

  --r-s:10px; --r-m:16px; --r-l:24px;
  --ombre-s:0 1px 2px rgba(19,20,39,.05), 0 4px 14px -8px rgba(19,20,39,.12);
  --ombre-m:0 2px 4px rgba(19,20,39,.04), 0 18px 40px -22px rgba(19,20,39,.30);
  --ombre-l:0 3px 6px rgba(19,20,39,.05), 0 40px 80px -40px rgba(19,20,39,.38);

  --ease:cubic-bezier(.22,.68,0,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --f-dis:'Cabinet Grotesk','Satoshi',-apple-system,'Segoe UI',sans-serif;
  --f-txt:'Satoshi',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --f-mon:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}
body{
  margin:0; background:var(--papier); color:var(--nuit);
  font-family:var(--f-txt); font-size:17px; line-height:1.62;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg{display:block; max-width:100%}
a{color:inherit; text-decoration:none}
p{margin:0}
h1,h2,h3{margin:0; font-family:var(--f-dis); font-weight:800; letter-spacing:-.035em; line-height:1.02}
ul,ol{margin:0; padding:0; list-style:none}
button,input,textarea{font:inherit; color:inherit}
::selection{background:var(--iris); color:#fff}

:focus-visible{outline:2px solid var(--iris); outline-offset:3px; border-radius:4px}

.skip{
  position:fixed; top:10px; left:10px; z-index:200; padding:10px 16px;
  background:var(--nuit); color:#fff; border-radius:var(--r-s);
  transform:translateY(-160%); transition:transform .25s var(--ease);
}
.skip:focus{transform:none}

/* ————— grille ————— */
.wrap{width:100%; max-width:1280px; margin-inline:auto; padding-inline:24px}
@media (min-width:700px){ .wrap{padding-left:84px; padding-right:36px} }
@media (min-width:1120px){ .wrap{padding-left:112px; padding-right:52px} }

.section{position:relative; padding-block:clamp(84px,10.5vw,148px)}
.section--alt{background:linear-gradient(180deg,var(--papier) 0%,var(--papier-2) 22%,var(--papier-2) 78%,var(--papier) 100%)}
.section[id]{scroll-margin-top:92px}

/* ————— typo utilitaires ————— */
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-family:var(--f-mon); font-size:.72rem; font-weight:500;
  letter-spacing:.15em; text-transform:uppercase; color:var(--gris);
  margin:0 0 22px;
}
.eyebrow__dot{width:6px; height:6px; border-radius:50%; background:var(--iris); flex:none}
.h2{font-size:clamp(1.95rem,4.1vw,3.25rem)}
.muted{color:var(--gris-clair)}
.lede{font-size:clamp(1.03rem,1.35vw,1.2rem); line-height:1.62; color:var(--nuit-2); max-width:56ch}

.head{margin-bottom:clamp(44px,5.5vw,72px)}
.head--split{display:grid; gap:28px; align-items:end}
@media (min-width:920px){
  .head--split{grid-template-columns:1.25fr .85fr; gap:64px}
  .head__side{padding-bottom:8px}
}
.head__side{color:var(--gris); font-size:1.02rem; max-width:46ch}

/* ————— boutons ————— */
.btn{
  --bg:var(--nuit); --fg:#fff;
  position:relative; display:inline-flex; align-items:center; gap:10px;
  padding:15px 26px; border:0; border-radius:100px; cursor:pointer;
  background:var(--bg); color:var(--fg);
  font-family:var(--f-txt); font-size:.97rem; font-weight:700; letter-spacing:-.01em;
  overflow:hidden; isolation:isolate;
  box-shadow:var(--ombre-s);
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
}
.btn>span{position:relative; z-index:2}
.btn__arrow{width:16px; height:16px; position:relative; z-index:2; transition:transform .4s var(--ease)}
.btn::before{
  content:''; position:absolute; inset:0; z-index:1; background:var(--iris);
  transform:translateY(101%); transition:transform .45s var(--ease);
}
.btn:hover{transform:translateY(-2px); box-shadow:var(--ombre-m)}
.btn:hover::before{transform:translateY(0)}
.btn:hover .btn__arrow{transform:translateX(4px)}
.btn:active{transform:translateY(0)}
.btn--sm{padding:11px 20px; font-size:.9rem}
.btn--ghost{--bg:transparent; --fg:var(--nuit); box-shadow:inset 0 0 0 1px var(--trait-fort)}
.btn--ghost:hover{--fg:#fff; box-shadow:inset 0 0 0 1px var(--iris)}
.btn--full{width:100%; justify-content:center}

/* ————— marque ————— */
.mark{display:inline-flex; align-items:center; gap:11px}
.mark__glyph{width:26px; height:26px; flex:none; overflow:visible}
.mark__ink{stroke:var(--nuit)}
.mark__accent{stroke:var(--iris); stroke-dasharray:52; stroke-dashoffset:52; animation:trace .9s .25s var(--ease-out) forwards}
@keyframes trace{to{stroke-dashoffset:0}}
.mark__word{font-family:var(--f-dis); font-weight:800; font-size:1.16rem; letter-spacing:-.035em}
.mark__word-b{color:var(--gris)}
.mark:hover .mark__word-b{color:var(--iris); transition:color .3s var(--ease)}

/* ————— nav ————— */
.nav{
  position:fixed; inset:0 0 auto; z-index:100;
  padding-block:18px;
  transition:padding .4s var(--ease), background .4s var(--ease), box-shadow .4s var(--ease);
}
.nav::after{
  content:''; position:absolute; inset:0; z-index:-1;
  background:rgba(243,244,249,.78); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  opacity:0; transition:opacity .4s var(--ease), border-color .4s var(--ease);
}
.nav.is-stuck{padding-block:11px}
.nav.is-stuck::after{opacity:1; border-bottom-color:var(--trait)}
.nav__in{display:flex; align-items:center; gap:24px}
.nav__links{display:none; margin-inline:auto; gap:30px}
@media (min-width:1020px){ .nav__links{display:flex} }
.nav__links a{
  position:relative; font-size:.94rem; color:var(--nuit-2); padding-block:4px;
  transition:color .3s var(--ease);
}
.nav__links a::after{
  content:''; position:absolute; left:0; bottom:0; height:1.5px; width:100%;
  background:var(--iris); transform:scaleX(0); transform-origin:right;
  transition:transform .4s var(--ease);
}
.nav__links a:hover{color:var(--nuit)}
.nav__links a:hover::after{transform:scaleX(1); transform-origin:left}
.nav__act{display:flex; align-items:center; gap:12px; margin-left:auto}
@media (min-width:1020px){ .nav__act{margin-left:0} }
.nav__act .btn{display:none}
@media (min-width:620px){ .nav__act .btn{display:inline-flex} }

.burger{
  display:grid; place-content:center; gap:5px; width:42px; height:42px;
  background:var(--blanc); border:1px solid var(--trait); border-radius:12px; cursor:pointer;
  transition:border-color .3s var(--ease)
}
@media (min-width:1020px){ .burger{display:none} }
.burger span{display:block; width:16px; height:1.6px; background:var(--nuit); border-radius:2px; transition:transform .35s var(--ease), opacity .2s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.3px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.3px) rotate(-45deg)}

.menu{position:fixed; inset:0; z-index:99; background:var(--papier); display:grid; place-items:center}
.menu[hidden]{display:none}
.menu__in{display:flex; flex-direction:column; gap:4px; width:min(440px,86vw)}
.menu__in a{
  display:flex; align-items:baseline; gap:16px; padding:15px 4px;
  font-family:var(--f-dis); font-weight:700; font-size:1.6rem; letter-spacing:-.03em;
  border-bottom:1px solid var(--trait);
  opacity:0; transform:translateY(14px);
  animation:menuIn .5s var(--ease-out) forwards; animation-delay:calc(var(--n,0)*45ms + 60ms);
}
.menu__in a em{font-family:var(--f-mon); font-style:normal; font-size:.68rem; color:var(--iris); letter-spacing:.1em}
.menu__cta{justify-content:center; margin-top:22px; border:0!important; background:var(--nuit); color:#fff; border-radius:100px; font-size:1.05rem!important}
@keyframes menuIn{to{opacity:1; transform:none}}

/* ————— le fil (rail) ————— */
.rail{position:absolute; inset:0; pointer-events:none; z-index:0; overflow:visible}
.rail svg{position:absolute; top:0; left:0}
.rail .rail__base{stroke:var(--trait-fort); stroke-width:1.2; fill:none}
.rail .rail__draw{stroke:var(--iris); stroke-width:1.6; fill:none; stroke-linecap:round}
.rail .rail__node{fill:var(--papier); stroke:var(--trait-fort); stroke-width:1.4; transition:stroke .5s var(--ease), fill .5s var(--ease)}
.rail .rail__node.is-on{stroke:var(--iris); fill:var(--iris)}
.rail .rail__halo{fill:var(--iris); opacity:0; transition:opacity .6s var(--ease)}
.rail .rail__halo.is-on{opacity:.14}

/* ————— hero ————— */
.hero{position:relative; padding-top:clamp(128px,17vw,196px); padding-bottom:clamp(40px,6vw,72px)}
.hero__eyebrow{opacity:0; animation:up .8s .1s var(--ease-out) forwards}
.hero__title{
  font-size:clamp(1.98rem,8.2vw,5.5rem); line-height:1.01; letter-spacing:-.04em;
  max-width:16ch; margin-bottom:clamp(30px,3.6vw,46px);
}
.hero__title .line{display:block; padding-bottom:.06em; margin-bottom:-.06em}
@media (min-width:701px){ .hero__title{line-height:.99} .hero__title .line{overflow:hidden} }
.hero__title .line>span{display:inline-block; transform:translateY(105%); animation:rise .95s var(--ease-out) forwards}
.hero__title .line:nth-child(1)>span{animation-delay:.16s}
.hero__title .line:nth-child(2)>span{animation-delay:.24s}
.hero__title .line:nth-child(3)>span{animation-delay:.32s}
.hero__title .line:nth-child(4)>span{animation-delay:.40s}
@keyframes rise{to{transform:none}}
@keyframes up{from{opacity:0; transform:translateY(14px)} to{opacity:1; transform:none}}

.accent{
  color:var(--iris);
  background-image:linear-gradient(rgba(69,54,224,.32),rgba(69,54,224,.32));
  background-repeat:no-repeat; background-position:0 97%; background-size:0% .075em;
  -webkit-box-decoration-break:clone; box-decoration-break:clone;
  animation:ruleIn .9s 1.05s var(--ease-out) forwards;
}
@keyframes ruleIn{to{background-size:100% .075em}}

.hero__aside{opacity:0; animation:up .9s .62s var(--ease-out) forwards}
@media (min-width:1120px){
  .hero__aside{display:grid; grid-template-columns:minmax(0,1fr) auto; gap:52px; align-items:start}
}
.hero__cta{display:flex; flex-wrap:wrap; gap:12px; margin-top:26px}
@media (min-width:1120px){ .hero__cta{margin-top:6px} }
.hero__note{
  margin-top:16px; font-family:var(--f-mon); font-size:.74rem; letter-spacing:.03em; color:var(--gris-clair);
}
@media (min-width:1120px){ .hero__note{grid-column:2; margin-top:14px; max-width:30ch} }

/* ————— scène de convergence ————— */
.stage{position:relative; margin-top:clamp(30px,4vw,62px)}
.defs{position:absolute; width:0; height:0; overflow:hidden}
.stage__svg{width:100%; height:auto; overflow:visible}
.stage__svg--tall{display:block; max-width:clamp(340px,46vw,480px); margin-inline:auto}
.stage__svg--wide{display:none}
@media (min-width:1080px){
  .stage__svg--tall{display:none}
  .stage__svg--wide{display:block; max-width:none}
}
.halo{opacity:0; animation:haloIn 1.6s 1.1s var(--ease-out) forwards}
@keyframes haloIn{to{opacity:1}}

.fil{
  stroke-dasharray:1400; stroke-dashoffset:1400;
  animation:draw 1.5s var(--ease-out) forwards;
  animation-delay:calc(.55s + var(--i)*.11s);
}
@keyframes draw{to{stroke-dashoffset:0}}
.pulse{opacity:0; filter:drop-shadow(0 0 5px rgba(69,54,224,.55));
  animation:pulseOn .01s linear forwards; animation-delay:var(--pd,1.5s)}
@keyframes pulseOn{to{opacity:.85}}

.chip rect{fill:var(--blanc); stroke:var(--trait); stroke-width:1}
.chip text{
  font-family:var(--f-txt); font-size:15px; font-weight:500; fill:var(--nuit-2);
  letter-spacing:-.01em; dominant-baseline:auto;
}
.chip__dot{fill:var(--ambre)}
.chip{
  opacity:0; transform:translateX(-16px);
  animation:chipIn .8s var(--ease-out) forwards;
  animation-delay:calc(.35s + var(--i)*.1s);
}
@keyframes chipIn{to{opacity:1; transform:none}}


.app{opacity:0; animation:appIn .9s 1.5s var(--ease-out) forwards}
@keyframes appIn{from{opacity:0; transform:translateY(16px) scale(.97)} to{opacity:1; transform:none}}
.app__frame{fill:var(--blanc); stroke:var(--trait); stroke-width:1.2; filter:drop-shadow(0 30px 50px rgba(19,20,39,.14))}
.app__bar{fill:var(--nuit)}
.app__bar-fix{fill:var(--nuit)}
.app__led{fill:var(--iris-2)}
.app__t{fill:rgba(255,255,255,.42)}
.app__row{fill:var(--papier-2); animation:rowIn .6s var(--ease-out) backwards; animation-delay:calc(1.85s + var(--i)*.12s)}
@keyframes rowIn{from{opacity:0; transform:translateX(-10px)} to{opacity:1; transform:none}}
.app__bar-c{fill:var(--iris); opacity:.24; transform-box:fill-box; transform-origin:bottom; animation:barIn .7s var(--ease-out) backwards; animation-delay:calc(2.15s + var(--i)*.09s)}
.app__bar-c:nth-child(3){opacity:.9}
@keyframes barIn{from{transform:scaleY(0)} to{transform:scaleY(1)}}
.app__ok{fill:none; stroke:var(--iris); stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round; stroke-dasharray:26; stroke-dashoffset:26; animation:draw .6s 2.55s var(--ease-out) forwards}
.app__label{font-family:var(--f-mon); font-size:12px; letter-spacing:.14em; text-transform:uppercase; fill:var(--gris); text-anchor:middle}

/* ————— symptômes ————— */
.symptomes{display:grid; gap:14px}
@media (min-width:620px){ .symptomes{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1120px){ .symptomes{grid-template-columns:repeat(4,1fr); gap:16px} }
.symp{
  position:relative; padding:26px 24px 28px; background:var(--blanc);
  border:1px solid var(--trait); border-radius:var(--r-m);
  transition:transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
}
.symp::before{
  content:''; position:absolute; left:24px; right:24px; top:0; height:2px;
  background:var(--ambre); border-radius:0 0 2px 2px; transform:scaleX(0); transform-origin:left;
  transition:transform .5s var(--ease);
}
.symp:hover{transform:translateY(-3px); border-color:var(--trait-fort); box-shadow:var(--ombre-m)}
.symp:hover::before{transform:scaleX(1)}
.symp__tag{font-family:var(--f-mon); font-size:.64rem; letter-spacing:.14em; text-transform:uppercase; color:var(--ambre)}
.symp__t{font-size:1.14rem; letter-spacing:-.025em; margin:12px 0 9px}
.symp p{font-size:.96rem; color:var(--gris); line-height:1.55}

.claim{
  margin-top:clamp(44px,5vw,68px); font-family:var(--f-dis); font-weight:700;
  font-size:clamp(1.3rem,2.5vw,1.95rem); letter-spacing:-.032em; line-height:1.26;
  color:var(--gris-clair); max-width:24ch;
}
.claim__hi{color:var(--nuit)}

/* ————— piliers ————— */
.piliers{display:grid; gap:18px}
@media (min-width:900px){ .piliers{grid-template-columns:repeat(3,1fr); gap:20px} }
.pilier{
  padding:8px 28px 32px; background:var(--blanc);
  border:1px solid var(--trait); border-radius:var(--r-l);
  transition:border-color .45s var(--ease), box-shadow .45s var(--ease), transform .45s var(--ease);
}
.pilier:hover{border-color:var(--trait-fort); box-shadow:var(--ombre-m); transform:translateY(-3px)}
.pilier__illu{
  margin:0 -12px 22px; border-radius:var(--r-m); overflow:hidden;
  background:linear-gradient(168deg,var(--iris-pale) 0%,rgba(237,235,253,.25) 55%,transparent 100%);
}
.pilier__illu svg{width:100%; max-width:330px; height:auto; margin-inline:auto}
.pilier__n{font-family:var(--f-mon); font-size:.7rem; letter-spacing:.16em; text-transform:uppercase; color:var(--iris); margin-bottom:12px}
.pilier__t{font-size:1.3rem; letter-spacing:-.03em; margin-bottom:11px}
.pilier__d{font-size:.98rem; color:var(--gris); line-height:1.58}

/* illustration 1 — centraliser */
.ce-frame{stroke:var(--iris); stroke-width:1.3; fill:none; opacity:.34; stroke-dasharray:520; stroke-dashoffset:520}
.ce-cells rect{fill:var(--iris); opacity:.16; transform-box:fill-box; transform-origin:center;
  transform:translate(var(--tx),var(--ty)) rotate(var(--r));
  transition:transform .9s var(--ease-out), opacity .9s var(--ease-out);}
.ce-cells rect:nth-child(5){opacity:.55}
[data-illu].is-playing .ce-cells rect{transform:none}
[data-illu].is-playing .ce-frame{animation:draw 1.1s .5s var(--ease-out) forwards}
.ce-cells rect:nth-child(1){transition-delay:.02s} .ce-cells rect:nth-child(2){transition-delay:.06s}
.ce-cells rect:nth-child(3){transition-delay:.1s}  .ce-cells rect:nth-child(4){transition-delay:.14s}
.ce-cells rect:nth-child(5){transition-delay:.18s} .ce-cells rect:nth-child(6){transition-delay:.22s}
.ce-cells rect:nth-child(7){transition-delay:.26s} .ce-cells rect:nth-child(8){transition-delay:.3s}
.ce-cells rect:nth-child(9){transition-delay:.34s}

/* illustration 2 — optimiser */
.op-before{opacity:1; transition:opacity .7s var(--ease)}
.op-zig{stroke:var(--ambre); stroke-width:1.4; fill:none; stroke-linejoin:round; opacity:.75}
.op-before circle{fill:var(--ambre); opacity:.5}
.op-after{opacity:0; transition:opacity .6s .45s var(--ease)}
.op-arc{stroke:var(--iris); stroke-width:2; fill:none; stroke-linecap:round; stroke-dasharray:230; stroke-dashoffset:230}
.op-after circle{fill:var(--iris)}
[data-illu].is-playing .op-before{opacity:.14}
[data-illu].is-playing .op-after{opacity:1}
[data-illu].is-playing .op-arc{animation:draw 1s .5s var(--ease-out) forwards}

/* illustration 3 — automatiser */
.au-rail{stroke:var(--trait-fort); stroke-width:1.6; stroke-linecap:round}
.au-rail--fill{stroke:var(--iris); stroke-dasharray:164; stroke-dashoffset:164}
.au-branch path{stroke:var(--trait-fort); transition:stroke .4s var(--ease); stroke-width:1.4; fill:none; stroke-linecap:round; stroke-linejoin:round;
  stroke-dasharray:52; stroke-dashoffset:52}
.au-tip{fill:var(--iris); opacity:0; transition:opacity .3s var(--ease)}
.au-node{fill:var(--blanc); stroke:var(--trait-fort); stroke-width:1.6; transition:stroke .4s var(--ease), fill .4s var(--ease)}
.au-node--end{fill:var(--blanc)}
.au-check{fill:none; stroke:var(--blanc); stroke-width:2; stroke-linecap:round; stroke-linejoin:round; stroke-dasharray:20; stroke-dashoffset:20}
.au-runner{fill:var(--iris); opacity:0}
[data-illu].is-playing .au-rail--fill{animation:draw 1.6s .2s linear forwards}
[data-illu].is-playing .au-runner{animation:runner 1.6s .2s linear forwards}
@keyframes runner{0%{opacity:1; transform:translateX(0)} 99%{opacity:1} 100%{opacity:0; transform:translateX(164px)}}
[data-illu].is-playing .au-node{animation:lit .5s var(--ease-out) forwards; animation-delay:calc(.2s + var(--i)*.4s)}
@keyframes lit{to{stroke:var(--iris); fill:var(--iris)}}
[data-illu].is-playing .au-node--end{animation-delay:1.4s}
[data-illu].is-playing .au-check{animation:draw .4s 1.55s var(--ease-out) forwards}
[data-illu].is-playing .au-branch path{animation:draw .5s var(--ease-out) forwards; animation-delay:calc(.55s + var(--i)*.4s)}
[data-illu].is-playing .au-branch path{stroke:var(--iris); opacity:.55}
[data-illu].is-playing .au-tip{opacity:1; transition-delay:calc(.9s + var(--i)*.4s)}

/* ————— applications ————— */
.apps{display:grid; gap:14px}
@media (min-width:620px){ .apps{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1000px){ .apps{grid-template-columns:repeat(3,1fr); gap:16px} }
.app-card{
  padding:28px 26px 30px; background:var(--blanc); border:1px solid var(--trait);
  border-radius:var(--r-m); position:relative; overflow:hidden;
  transition:transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
}
.app-card::after{
  content:''; position:absolute; inset:auto -40% -70% auto; width:200px; height:200px; border-radius:50%;
  background:radial-gradient(circle,rgba(69,54,224,.10),transparent 70%);
  opacity:0; transition:opacity .5s var(--ease);
}
.app-card:hover{transform:translateY(-3px); border-color:var(--trait-fort); box-shadow:var(--ombre-m)}
.app-card:hover::after{opacity:1}
.app-card__ico{
  display:grid; place-items:center; width:44px; height:44px; margin-bottom:20px;
  border-radius:13px; background:var(--iris-pale); color:var(--iris);
  transition:transform .5s var(--ease), background .4s var(--ease)
}
.app-card__ico svg{width:22px; height:22px}
.app-card:hover .app-card__ico{transform:translateY(-2px) rotate(-4deg); background:var(--iris); color:#fff}
.app-card h3{font-size:1.09rem; letter-spacing:-.028em; margin-bottom:9px; position:relative; z-index:1}
.app-card p{font-size:.95rem; color:var(--gris); line-height:1.55; position:relative; z-index:1}

/* ————— méthode ————— */
.etapes{display:grid; gap:0}
.etape{
  display:grid; grid-template-columns:auto 1fr; gap:22px; align-items:start;
  padding:30px 0; border-top:1px solid var(--trait);
  transition:padding-left .45s var(--ease)
}
.etape:last-child{border-bottom:1px solid var(--trait)}
@media (min-width:820px){
  .etape{grid-template-columns:120px 1fr; gap:44px; padding:38px 0}
  .etape:hover{padding-left:12px}
}
.etape__n{
  font-family:var(--f-mon); font-size:.86rem; letter-spacing:.1em; color:var(--iris);
  padding-top:5px; position:relative;
}
@media (min-width:820px){
  .etape__n::after{content:''; position:absolute; left:44px; right:0; top:13px; height:1px; background:var(--trait-fort)}
}
.etape__c{max-width:62ch}
.etape__c h3{font-size:clamp(1.25rem,2.2vw,1.6rem); letter-spacing:-.032em; margin-bottom:10px}
.etape__c p{color:var(--gris); font-size:1rem}
.etape__t{
  display:inline-block; margin-top:14px; padding:5px 12px; border-radius:100px;
  background:var(--papier-2); border:1px solid var(--trait);
  font-family:var(--f-mon); font-size:.7rem; letter-spacing:.06em; color:var(--nuit-2);
}
.section--alt .etape__t{background:var(--blanc)}

/* ————— bascule avant/après ————— */
.bascule{border:1px solid var(--trait); border-radius:var(--r-l); background:var(--blanc); overflow:hidden}
.bascule__hd{display:none}
@media (min-width:760px){
  .bascule__hd{display:grid; grid-template-columns:1fr 56px 1fr; border-bottom:1px solid var(--trait)}
  .bascule__lbl{
    padding:16px 28px; font-family:var(--f-mon); font-size:.68rem;
    letter-spacing:.15em; text-transform:uppercase;
  }
  .bascule__hd{background:linear-gradient(90deg,var(--ambre-pale) 0 42%,var(--iris-pale) 58% 100%)}
  .bascule__lbl--av{color:var(--ambre)}
  .bascule__lbl--ap{grid-column:3; color:var(--iris)}
}
.bsc{display:grid; gap:6px; padding:20px 24px; border-top:1px solid var(--trait)}
.bsc:first-child{border-top:0}
@media (min-width:760px){
  .bsc{grid-template-columns:1fr 56px 1fr; gap:0; align-items:center; padding:0}
  .bsc__av,.bsc__ap{padding:22px 28px}
}
.bsc__av{color:var(--gris); font-size:.98rem}
.bsc__ap{font-weight:500; font-size:.99rem; color:var(--nuit)}
.bsc__ar{position:relative; display:block; height:20px}
@media (min-width:760px){ .bsc__ar{height:100%; min-height:56px} }
.bsc__ar::before{
  content:''; position:absolute; top:50%; left:0; width:22px; height:1.4px; background:var(--trait-fort);
  transform:translateY(-50%); transition:width .5s var(--ease), background .5s var(--ease);
}
@media (min-width:760px){ .bsc__ar::before{left:14px; width:22px} }
.bsc__ar::after{
  content:''; position:absolute; top:50%; left:18px; width:6px; height:6px;
  border-top:1.4px solid var(--trait-fort); border-right:1.4px solid var(--trait-fort);
  transform:translateY(-50%) rotate(45deg); transition:border-color .5s var(--ease), transform .5s var(--ease);
}
@media (min-width:760px){ .bsc__ar::after{left:32px} }
.bsc.is-in .bsc__ar::before{background:var(--iris)}
.bsc.is-in .bsc__ar::after{border-color:var(--iris)}

.engagements{margin-top:clamp(48px,5.5vw,76px)}
.engagements__t{font-size:clamp(1.2rem,2vw,1.5rem); letter-spacing:-.03em; margin-bottom:26px}
.eng-list{display:grid; gap:0; border-top:1px solid var(--trait)}
@media (min-width:900px){ .eng-list{grid-template-columns:1fr 1fr; gap:0 52px} }
.eng-list li{display:grid; gap:5px; padding:20px 0; border-bottom:1px solid var(--trait)}
@media (min-width:640px){ .eng-list li{grid-template-columns:190px 1fr; gap:24px; align-items:baseline} }
@media (min-width:900px){ .eng-list li{grid-template-columns:1fr; gap:6px} }
.eng-list__k{font-weight:700; letter-spacing:-.02em; font-size:1.01rem}
.eng-list__v{color:var(--gris); font-size:.96rem; line-height:1.55}

/* ————— faq ————— */
.faq{border-top:1px solid var(--trait)}
.qa{border-bottom:1px solid var(--trait)}
.qa__q{
  display:flex; align-items:center; justify-content:space-between; gap:24px; width:100%;
  padding:24px 0; background:none; border:0; cursor:pointer; text-align:left;
  font-family:var(--f-dis); font-weight:700; font-size:clamp(1.03rem,1.6vw,1.22rem);
  letter-spacing:-.028em; color:var(--nuit); transition:color .3s var(--ease)
}
.qa__q:hover{color:var(--iris)}
.qa__i{position:relative; flex:none; width:20px; height:20px}
.qa__i::before,.qa__i::after{
  content:''; position:absolute; top:50%; left:50%; background:currentColor; border-radius:2px;
  transform:translate(-50%,-50%); transition:transform .4s var(--ease), opacity .3s var(--ease)
}
.qa__i::before{width:13px; height:1.6px}
.qa__i::after{width:1.6px; height:13px}
.qa.is-open .qa__i::after{transform:translate(-50%,-50%) rotate(90deg); opacity:0}
.qa.is-open .qa__q{color:var(--iris)}
.qa__w{display:grid; grid-template-rows:0fr; transition:grid-template-rows .5s var(--ease)}
.qa.is-open .qa__w{grid-template-rows:1fr}
.qa__a{overflow:hidden}
.qa__a p{max-width:70ch; color:var(--gris); font-size:1rem; padding-bottom:26px}

/* ————— contact ————— */
.contact{padding-bottom:clamp(96px,11vw,150px)}
.ct{display:grid; gap:clamp(40px,5vw,72px)}
@media (min-width:980px){ .ct{grid-template-columns:1fr 1fr; gap:72px; align-items:start} }
.ct__lede{margin-top:22px}
.ct__pts{margin-top:28px; display:grid; gap:12px}
.ct__pts li{position:relative; padding-left:26px; color:var(--nuit-2); font-size:.99rem}
.ct__pts li::before{
  content:''; position:absolute; left:0; top:.62em; width:12px; height:8px;
  border-left:1.7px solid var(--iris); border-bottom:1.7px solid var(--iris);
  transform:rotate(-45deg) translateY(-1px);
}
.ct__mail{
  display:inline-block; margin-top:32px; font-family:var(--f-mon); font-size:.9rem;
  color:var(--nuit); border-bottom:1px solid var(--trait-fort); padding-bottom:3px;
  transition:color .3s var(--ease), border-color .3s var(--ease)
}
.ct__mail:hover{color:var(--iris); border-color:var(--iris)}

.form{
  display:grid; gap:16px; padding:clamp(24px,3.5vw,38px);
  background:var(--blanc); border:1px solid var(--trait); border-radius:var(--r-l);
  box-shadow:var(--ombre-l);
}
@media (min-width:560px){ .form{grid-template-columns:1fr 1fr} }
.field{display:grid; gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.82rem; font-weight:500; color:var(--nuit-2); letter-spacing:-.005em}
.opt{color:var(--gris-clair); font-weight:400}
.field input,.field textarea{
  width:100%; padding:13px 15px; background:var(--papier); border:1px solid var(--trait);
  border-radius:var(--r-s); font-size:.96rem; resize:vertical;
  transition:border-color .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--gris-clair)}
.field input:focus,.field textarea:focus{
  outline:none; background:var(--blanc); border-color:var(--iris);
  box-shadow:0 0 0 3px rgba(69,54,224,.12);
}
.field.is-error input,.field.is-error textarea{border-color:#C0392B; background:#FDF3F2}
.pot{position:absolute; left:-9999px; width:1px; height:1px; opacity:0; pointer-events:none}
.form__foot{grid-column:1/-1; display:grid; gap:14px; margin-top:4px}
.form__note{font-size:.82rem; color:var(--gris-clair); text-align:center}
.form__note.is-alert{color:#C0392B}
.form__note.is-ok{color:var(--iris)}

/* ————— footer ————— */
.foot{border-top:1px solid var(--trait); padding-block:56px 40px; background:var(--papier-2)}
.foot__in{display:grid; gap:26px}
@media (min-width:860px){
  .foot__in{grid-template-columns:auto 1fr auto; align-items:start; gap:52px}
  .foot__legal{grid-column:1/-1}
}
.foot__base{color:var(--gris); font-size:.94rem; line-height:1.5}
.foot__nav{display:flex; flex-wrap:wrap; gap:8px 22px}
.foot__nav a{font-size:.92rem; color:var(--nuit-2); transition:color .3s var(--ease)}
.foot__nav a:hover{color:var(--iris)}
.foot__legal{
  padding-top:22px; border-top:1px solid var(--trait);
  font-family:var(--f-mon); font-size:.72rem; letter-spacing:.04em; color:var(--gris-clair)
}
.foot__legal a{transition:color .3s var(--ease)}
.foot__legal a:hover{color:var(--nuit)}

/* ————— reveal ————— */
[data-reveal]{opacity:0; transform:translateY(20px); transition:opacity .8s var(--ease-out), transform .8s var(--ease-out); transition-delay:var(--d,0ms)}
[data-reveal].is-in{opacity:1; transform:none}


/* ————— empilement du fil ————— */
main{position:relative}
.rail{z-index:1}

/* ————— réalisations ————— */
.cas-liste{display:grid; gap:20px}
.cas{
  display:grid; gap:30px; padding:clamp(20px,3vw,30px);
  background:var(--blanc); border:1px solid var(--trait); border-radius:var(--r-l);
  box-shadow:var(--ombre-s);
}
@media (min-width:960px){
  .cas{grid-template-columns:1.12fr .88fr; gap:clamp(32px,4vw,54px); align-items:center; padding:clamp(28px,3vw,38px)}
}
.cas__vue{
  border-radius:var(--r-m); overflow:hidden; padding:clamp(10px,1.6vw,18px);
  background:linear-gradient(158deg,var(--iris-pale) 0%,rgba(237,235,253,.28) 55%,rgba(237,235,253,0) 100%);
}
.cas__vue svg{width:100%; height:auto; display:block; filter:drop-shadow(0 18px 34px rgba(19,20,39,.13))}
.cas__tag{
  font-family:var(--f-mon); font-size:.68rem; letter-spacing:.15em;
  text-transform:uppercase; color:var(--iris); margin-bottom:14px;
}
.cas__t{font-size:clamp(1.22rem,2.1vw,1.62rem); letter-spacing:-.032em; line-height:1.14; margin-bottom:14px}
.cas__d{color:var(--gris); font-size:1rem; margin-bottom:22px}
.cas__pts{display:grid; gap:10px; margin-bottom:24px}
.cas__pts li{position:relative; padding-left:24px; font-size:.95rem; color:var(--nuit-2); line-height:1.5}
.cas__pts li::before{
  content:''; position:absolute; left:0; top:.55em; width:11px; height:7px;
  border-left:1.7px solid var(--iris); border-bottom:1.7px solid var(--iris);
  transform:rotate(-45deg);
}
.cas__etat{
  display:inline-flex; align-items:center; gap:9px;
  font-family:var(--f-mon); font-size:.7rem; letter-spacing:.06em; color:var(--gris-clair);
}
.cas__etat::before{content:''; width:6px; height:6px; border-radius:50%; background:var(--ambre); flex:none}

/* maquette d'application */
.mk-fond{fill:var(--blanc)}
.mk-papier{fill:var(--papier)}
.mk-cote{fill:var(--nuit)}
.mk-logo{fill:var(--iris)}
.mk-actif{fill:var(--iris)}
.mk-c08{fill:rgba(255,255,255,.08)}
.mk-c22{fill:rgba(255,255,255,.22)}
.mk-c25{fill:rgba(255,255,255,.26)}
.mk-c30{fill:rgba(255,255,255,.32)}
.mk-c45{fill:rgba(255,255,255,.48)}
.mk-c60{fill:rgba(255,255,255,.62)}
.mk-c75{fill:rgba(255,255,255,.8)}
.mk-encre{fill:var(--nuit)}
.mk-trait{fill:var(--trait-fort)}
.mk-ligne{stroke:var(--trait); stroke-width:1}
.mk-panneau{fill:var(--blanc); stroke:var(--trait); stroke-width:1}
.mk-bord{fill:none; stroke:var(--trait-fort); stroke-width:1}
.mk-mesures rect:nth-child(odd){fill:var(--trait-fort)}
.mk-mesures rect:nth-child(even){fill:var(--nuit-2)}
.mock__cta{fill:var(--nuit)}
.mk-cta-i{fill:rgba(255,255,255,.55)}
.mk-cta-t{fill:rgba(255,255,255,.85)}
.mk-vert{fill:#E9EEE7}
.mk-parcelles rect{fill:#E7E8F1; stroke:var(--blanc); stroke-width:1.6}
.mk-route{stroke:#EFEFF6; stroke-width:12}
.mk-route-axe{stroke:#DDDEEA; stroke-width:1; stroke-dasharray:7 6}
.mock__parcelle{fill:var(--iris-pale); stroke:var(--iris); stroke-width:2.2}
.mk-fond-actif{fill:var(--nuit)}
.mk-fond-t{fill:rgba(255,255,255,.75)}
.mk-fond-off{fill:var(--blanc); stroke:var(--trait); stroke-width:1}
.mk-echelle{fill:var(--blanc); stroke:var(--trait); stroke-width:1}
.mk-onglets rect{fill:var(--trait-fort)}
.mk-onglet-actif{fill:var(--nuit)!important}
.mk-souligne{fill:var(--iris)!important}
.mk-champs rect:nth-child(odd){fill:var(--trait-fort)}
.mk-champs rect:nth-child(even){fill:var(--nuit-2)}
.mk-valeur{fill:var(--nuit)}
.mk-tableau rect{fill:var(--trait-fort)}
.mk-tr{fill:var(--trait)!important}

.mock__row{opacity:0}
.cas.is-in .mock__row{animation:up .55s var(--ease-out) forwards; animation-delay:calc(.45s + var(--i,0)*.06s)}
.mock__parcelle{stroke-dasharray:200; stroke-dashoffset:200}
.cas.is-in .mock__parcelle{animation:draw .9s .5s var(--ease-out) forwards}
.mock__cta{transform-box:fill-box; transform-origin:center}
.cas.is-in .mock__cta{animation:mockCta 2.6s 1.25s var(--ease-out)}
@keyframes mockCta{0%,100%{transform:scale(1)} 14%{transform:scale(1.04)} 30%{transform:scale(1)}}


/* ————— onglets des réalisations ————— */
.ong{
  display:flex; flex-wrap:wrap; gap:2px clamp(20px,3vw,34px);
  border-bottom:1px solid var(--trait); margin-bottom:clamp(24px,3vw,34px);
}
.ong__b{
  position:relative; padding:0 0 15px; background:none; border:0; cursor:pointer;
  font-family:var(--f-dis); font-weight:700; font-size:clamp(.98rem,1.5vw,1.14rem);
  letter-spacing:-.028em; color:var(--gris-clair);
  transition:color .3s var(--ease);
}
.ong__b::after{
  content:''; position:absolute; left:0; right:0; bottom:-1px; height:2px; border-radius:2px;
  background:var(--iris); transform:scaleX(0); transform-origin:left;
  transition:transform .45s var(--ease);
}
.ong__b:hover{color:var(--nuit-2)}
.ong__b[aria-selected="true"]{color:var(--nuit)}
.ong__b[aria-selected="true"]::after{transform:scaleX(1)}
.cas[hidden]{display:none}

/* maquettes — éléments partagés */
.mk-entete{fill:var(--papier-2)}
.mk-filtre-on{fill:var(--iris-pale); stroke:var(--iris); stroke-width:1}
.mk-filtre-on-t{fill:var(--iris)}
.mk-filtre-off{fill:var(--blanc); stroke:var(--trait); stroke-width:1}
.mk-pil-ok{fill:var(--iris-pale)!important}
.mk-pil-alerte{fill:var(--ambre-pale)!important}
.mk-bouton-2{fill:var(--iris-pale)!important}
.mk-carte{fill:var(--blanc)!important; stroke:var(--trait); stroke-width:1}
.mk-lignes rect{fill:var(--nuit-2)}
.mk-alertes circle{fill:var(--ambre)}
.mk-alertes rect{fill:var(--trait-fort)}

/* maquette coursier */
.mk-tel{fill:var(--nuit)}
.mk-ecran{fill:var(--papier)}
.mk-etapes rect{fill:var(--nuit-2)}
.mk-etape{fill:var(--blanc)!important; stroke:var(--trait); stroke-width:1}
.mk-fait{fill:var(--iris)!important}
.mk-attente{fill:var(--blanc)!important; stroke:var(--trait-fort); stroke-width:1.6}
.mk-route2{stroke:var(--trait-fort); stroke-width:1.6; stroke-linecap:round}
.mock__trajet{stroke:var(--iris); stroke-width:2.2; stroke-linecap:round}
.mk-noeud{fill:var(--blanc); stroke:var(--iris); stroke-width:2}
.mk-noeud--plein{fill:var(--iris)}
.mk-courses rect{fill:var(--nuit-2)}
.mk-fleche{stroke:var(--trait-fort); stroke-width:1.4; fill:none; stroke-linecap:round; stroke-linejoin:round}

.mock__trajet{stroke-dasharray:210; stroke-dashoffset:210}
.cas.is-in .mock__trajet{animation:draw 1.1s .5s var(--ease-out) forwards}

/* ————— accessibilité : mouvement réduit —————
   Ligne de partage retenue : ce qui gêne, c'est le mouvement autonome —
   celui qui se répète sans fin, celui qui suit le défilement, celui qui
   se déclenche sous le curseur. Une entrée qui joue une fois au
   chargement, puis plus jamais, reste. */
@media (prefers-reduced-motion:reduce){

  /* le défilement ne s'anime plus tout seul */
  html{scroll-behavior:auto}

  /* plus rien ne bouge en permanence — les impulsions sur les fils sont
     par ailleurs limitées à trois passages dans script.js */
  .cas.is-in .mock__cta{animation:none}

  /* au survol la couleur change, mais rien ne se soulève ni ne glisse */
  .btn:hover,.symp:hover,.pilier:hover,.app-card:hover{transform:none}
  .app-card:hover .app-card__ico{transform:none}
  .btn:hover .btn__arrow{transform:none}
  .etape:hover{padding-left:0}
  .btn::before{transform:none; opacity:0; transition:opacity .3s var(--ease)}
  .btn:hover::before{opacity:1}
}