:root{
  --nuit:#0B1A2E;--nuit-2:#13243B;--ivoire:#F3EEE4;--papier:#FBF9F5;--or:#C9A55C;--or-texte:#7E6228;
  --brume:#C5CEDB;--ardoise:#4A5568;--filet-c:#DDD6C8;--filet-s:rgba(197,206,219,.24);--erreur-s:#F0A49F;
  --titre:"Marcellus","Trajan Pro",Georgia,serif;
  --texte:"Jost","Futura","Century Gothic",sans-serif;
  --ease:cubic-bezier(.16,.84,.24,1);
  --sec:clamp(112px,16vw,240px);
  --gl:max(16px,env(safe-area-inset-left,0px));--gr:max(16px,env(safe-area-inset-right,0px));
  color-scheme:dark;
}
@media (min-width:768px){:root{--gl:max(48px,env(safe-area-inset-left,0px));--gr:max(48px,env(safe-area-inset-right,0px))}}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;background:var(--nuit)}
body{margin:0;background:var(--nuit);color:var(--ivoire);font:300 1.1875rem/1.6 var(--texte);-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--titre);font-weight:400;margin:0;text-wrap:balance}
h2{font-size:clamp(2.5rem,6.4vw,6rem);line-height:1.04;letter-spacing:-.01em;max-width:15ch}
h3{font-size:1.625rem;line-height:1.2}
p{margin:0}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
fieldset{border:0;margin:0;padding:0;min-width:0}
:focus-visible{outline:2px solid var(--or);outline-offset:3px}
.cadre{max-width:1400px;margin-inline:auto;padding-left:var(--gl);padding-right:var(--gr)}
.vis-cache{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.saut{position:fixed;left:16px;top:-80px;z-index:100;background:var(--or);color:var(--nuit);padding:12px 18px}
.saut:focus{top:12px}
.chapo{margin-top:24px;max-width:34em;color:var(--brume);font-size:clamp(1.25rem,2vw,1.5rem);line-height:1.45}
.note{margin-top:24px;color:var(--brume);font-size:1rem}
main{position:relative;z-index:1;overflow-x:clip}

/* scène */
.scene{position:fixed;inset:0;width:100%;height:100vh;height:100lvh;display:block;opacity:0;transition:opacity 1.4s ease}
.scene-prete .scene{opacity:1}
.sans-3d .scene{display:none}
.sans-3d body{background:linear-gradient(180deg,#0B1A2E,#1A2A40 60%,#0B1A2E)}
.sans-3d .heros::before{content:"";position:absolute;right:5%;top:12%;width:min(52vw,700px);aspect-ratio:21/18;background:linear-gradient(180deg,#34506F,#0B1A2E 92%);clip-path:polygon(0 100%,23% 42%,41% 84%,73% 0,100% 100%)}

/* progression */
.alti{position:fixed;right:max(20px,env(safe-area-inset-right,0px));top:50%;z-index:40;display:flex;align-items:center;gap:14px;transform:translateY(-50%);color:var(--brume);font-size:.9375rem;pointer-events:none;transition:color .3s}
.alti-nom{writing-mode:vertical-rl;transform:rotate(180deg)}
.alti-rail{position:relative;width:2px;height:180px;background:var(--filet-s)}
.alti-rail i{position:absolute;inset:0;background:var(--or);transform-origin:bottom;transform:scaleY(0)}
.sur-clair .alti{opacity:0}
@media (max-width:980px){.alti{display:none}}

/* bouton */
.bouton{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:60px;padding:0 36px;border:0;background:var(--or);color:var(--nuit);font:400 1.125rem/1 var(--texte);text-decoration:none;cursor:pointer;overflow:hidden}
.bouton::before{content:"";position:absolute;inset:0;background:var(--ivoire);transform:translateY(101%);transition:transform .5s var(--ease)}
.bouton:hover::before{transform:none}
.bouton span{position:relative}
.bouton:disabled{opacity:.6;cursor:wait}

/* en-tête */
.entete{position:fixed;inset:0 0 auto;z-index:50;transition:background .4s}
.entete.pose{background:rgba(11,26,46,.92)}
.entete-in{display:flex;align-items:center;justify-content:space-between;height:88px;gap:24px}
.logo img{height:42px;width:auto}
.menu{display:flex;align-items:center;gap:34px;font-size:1.0625rem}
.menu a{text-decoration:none;padding:10px 0;background:linear-gradient(var(--or),var(--or)) left bottom/0 2px no-repeat;transition:background-size .4s var(--ease)}
.menu a:hover{background-size:100% 2px}
.menu-btn{display:none;min-height:44px;padding:0 18px;background:none;border:1px solid var(--brume);color:var(--ivoire);font:400 1rem/1 var(--texte);cursor:pointer}
@media (max-width:980px){
  .menu-btn{display:block;position:relative;z-index:2}
  .menu{position:fixed;inset:0;flex-direction:column;align-items:flex-start;justify-content:center;gap:8px;padding:0 var(--gr) 0 var(--gl);background:var(--nuit);font:400 2.25rem/1.2 var(--titre);visibility:hidden;opacity:0;transition:opacity .25s,visibility .25s}
  .menu.ouvert{visibility:visible;opacity:1}
}

/* héros */
.heros{position:relative;min-height:max(100svh,660px);display:flex;align-items:flex-end;background:linear-gradient(180deg,rgba(11,26,46,0) 40%,rgba(11,26,46,.78) 92%)}
.heros-in{position:relative;width:100%;padding-top:120px;padding-bottom:clamp(40px,5vw,64px)}
h1{font-size:clamp(2.75rem,8.6vw,9rem);line-height:1;letter-spacing:-.015em}
.ligne{display:block;overflow:hidden;padding-bottom:.08em}
.ligne>span{display:block;animation:monte 1.5s var(--ease) both}
.ligne:nth-child(2)>span{animation-delay:.14s}
.ligne:nth-child(3)>span{animation-delay:.28s}
.doree{color:var(--or)}
@keyframes monte{from{transform:translateY(110%)}}
.heros-bas{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:24px 64px;margin-top:clamp(24px,3vw,40px)}
.heros-bas p{max-width:32em;color:var(--ivoire);font-size:clamp(1.25rem,2vw,1.5rem);line-height:1.4}

/* manifeste */
.manifeste{height:240vh}
.manifeste-colle{position:sticky;top:0;min-height:100vh;display:flex;align-items:center}
#manifeste{font:400 clamp(2rem,5vw,4.75rem)/1.16 var(--titre);text-wrap:pretty}
#manifeste.eteint span{color:rgba(243,238,228,.2);transition:color .5s}
#manifeste.eteint span.on{color:var(--ivoire)}

/* arête */
.arete,.capacites,.voies,.questions{padding-block:var(--sec)}
.raisons{margin:clamp(64px,9vw,136px) 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px clamp(32px,5vw,80px)}
.raisons div{border-top:2px solid var(--or);padding-top:22px}
.raisons dt{font:400 1.75rem/1.2 var(--titre)}
.raisons dd{margin:14px 0 0;color:var(--brume)}
@media (max-width:860px){.raisons{grid-template-columns:1fr}}

/* atelier */
.atelier{padding-block:var(--sec)}
.atelier-grille{margin-top:clamp(40px,6vw,72px);display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px clamp(32px,5vw,80px);align-items:stretch}
.atelier-choix{display:grid;gap:32px;align-content:start}
legend{padding:0;margin-bottom:10px;color:var(--brume)}
.atelier-choix label{display:block;cursor:pointer}
.atelier-choix input{position:absolute;opacity:0;width:1px;height:1px}
.atelier-choix span{display:block;padding:9px 0;font:400 1.75rem/1.2 var(--titre);color:rgba(243,238,228,.62);transition:color .3s,padding .4s var(--ease);min-height:44px}
.atelier-choix label:hover span{color:var(--ivoire)}
.atelier-choix input:checked+span{color:var(--or);padding-left:30px;background:linear-gradient(var(--or),var(--or)) left center/20px 2px no-repeat}
.atelier-choix input:focus-visible+span{outline:2px solid var(--or);outline-offset:2px}
.maquette{--m-fond:#fff;--m-encre:#000;--m-accent:#000;--m-police:Georgia,serif;display:flex;flex-direction:column;min-height:min(62vh,600px);background:var(--m-fond);color:var(--m-encre);font-family:var(--m-police);transition:background .6s,color .6s}
.maquette-nav{display:flex;align-items:center;gap:24px;padding:20px clamp(20px,3vw,40px);font-size:1rem}
.maquette-nav b{margin-right:auto;font-weight:400;font-size:1.25rem}
.maquette-corps{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;gap:14px;padding:clamp(20px,3vw,40px)}
.maquette-type{font-size:1.0625rem;opacity:.85}
.maquette-titre{font-size:clamp(2rem,5.2vw,5rem);line-height:1.03;max-width:13ch}
.maquette[data-caractere=audacieux] .maquette-titre{text-transform:uppercase;font-weight:500;letter-spacing:-.01em}
.maquette[data-caractere=epure] .maquette-titre{font-style:italic}
.maquette-bouton{margin-top:10px;padding:14px 22px;background:var(--m-accent);color:var(--m-fond);font-size:1.0625rem;transition:background .6s,color .6s}
@media (max-width:860px){.atelier-grille{grid-template-columns:1fr}.atelier-choix{grid-template-columns:1fr 1fr;gap:16px}.atelier-choix span{font-size:1.375rem}}

/* réalisations */
.realisations{background:var(--papier);color:var(--nuit)}
.real-tete{padding-top:var(--sec);padding-bottom:clamp(56px,8vw,112px);display:grid;gap:24px}
.real-tete p{max-width:34em;color:var(--ardoise);font-size:1.375rem;line-height:1.45}
.projet{height:230vh;--fond:#fff;--encre:#000;--lien:#000}
.projet-colle{position:sticky;top:0;height:100vh;height:100svh;display:flex;align-items:center;background:var(--fond);color:var(--encre);overflow:hidden}
.projet-in{width:100%;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,96px);align-items:center;perspective:1600px}
.projet-texte{display:grid;gap:16px;justify-items:start}
.projet-texte h3{font-size:clamp(2.5rem,5.4vw,5rem);line-height:1}
.projet-type{font-size:1.125rem;opacity:.85}
.projet-lien{font-size:1.1875rem;font-weight:400;color:var(--lien);text-underline-offset:6px;text-decoration-thickness:2px;padding:10px 0}
.projet-lien:hover{text-decoration-color:transparent}
.ecran{display:block;height:min(76vh,760px);overflow:hidden;background:var(--encre);transform-origin:left center}
.ecran img{width:100%}
.projet-mega{--fond:#F3F4F0;--encre:#19182C;--lien:#2340D8}
.nom-mega{font-family:"Anybody","Arial Black",sans-serif;font-weight:900;font-variation-settings:'wdth' 150,'wght' 900;text-transform:uppercase;color:#D42F1E;font-size:clamp(2.25rem,4.6vw,4.25rem)!important}
.projet-casa{--fond:#0B1C14;--encre:#EEF1E8;--lien:#F0A49F}
.nom-casa{font-family:"Bodoni Moda","Didot",Georgia,serif;font-style:italic;font-weight:500}
.projet-prestige{--fond:#111316;--encre:#ECEDE9;--lien:#C9A66C}
.nom-prestige{font-family:"Archivo","Helvetica Neue",Arial,sans-serif;font-weight:700;font-variation-settings:'wdth' 125,'wght' 700;text-transform:uppercase;font-size:clamp(2rem,3.8vw,3.5rem)!important}
@media (max-width:860px){
  .projet{height:190vh}
  .projet-in{grid-template-columns:1fr;gap:18px;padding-top:96px}
  .projet-texte{gap:6px}
  .projet-texte p:not(.projet-type){font-size:1.0625rem;line-height:1.45}
  .ecran{height:36vh}
}

@media (max-height:520px){
  .projet{height:auto}
  .projet-colle{position:static;height:auto;padding-block:96px 48px}
  .ecran{height:70vh}
}

/* preuves */
.preuves{list-style:none;margin:clamp(48px,7vw,96px) 0 0;padding:0;max-width:1000px}
.preuves li{padding:22px 0;border-top:1px solid var(--filet-s);font-size:clamp(1.25rem,2.1vw,1.625rem);line-height:1.4;color:var(--brume)}
.preuves b{font:400 1.1em/1 var(--titre);color:var(--ivoire)}

/* budgets */
.budgets{min-height:100vh;padding-block:clamp(96px,10vw,140px)}
.budget-panneau{max-width:620px;padding:clamp(24px,3vw,40px);background:rgba(11,26,46,.86)}
.budget-panneau h2{font-size:clamp(2.25rem,4.2vw,3.75rem)}
.budget-panneau .chapo{font-size:1.25rem;margin-top:16px}
.budget-label{display:block;margin-top:28px;color:var(--brume)}
.budget-prix{display:block;white-space:nowrap;font:400 clamp(2.75rem,5.4vw,4.5rem)/1.15 var(--titre)}
.budget-range{-webkit-appearance:none;appearance:none;display:block;width:100%;height:44px;margin:8px 0 0;background:none;cursor:pointer}
.budget-range::-webkit-slider-runnable-track{height:2px;background:var(--brume)}
.budget-range::-moz-range-track{height:2px;background:var(--brume)}
.budget-range::-webkit-slider-thumb{-webkit-appearance:none;width:48px;height:14px;margin-top:-6px;background:var(--or);border:0}
.budget-range::-moz-range-thumb{width:48px;height:14px;background:var(--or);border:0;border-radius:0}
.budget-reperes{display:flex;justify-content:space-between;color:var(--brume);font-size:.9375rem}
.budget-panneau h3{margin-top:28px}
.budget-panneau ul{list-style:none;margin:12px 0 0;padding:0}
.budget-panneau li{padding:9px 0;border-top:1px solid var(--filet-s)}

/* premium */
.premium{background:var(--papier);color:var(--nuit);padding-block:var(--sec)}
.premium h2{max-width:17ch}
.premium .chapo{color:var(--ardoise)}
.rideau{position:relative;margin-top:clamp(32px,5vw,56px);aspect-ratio:16/10;max-height:76vh;width:100%;overflow:hidden;background:var(--nuit);container-type:inline-size;--pos:55%}
.rideau-prem,.rideau-moy{position:absolute;inset:0}
.rideau-prem img{width:100%;height:100%;object-fit:cover}
.rideau-moy{clip-path:inset(0 0 0 var(--pos));background:#fff;color:#333}
.moy-page{height:100%;display:flex;flex-direction:column;font-family:Arial,Helvetica,sans-serif;font-size:1.7cqw}
.moy-nav{display:flex;align-items:center;gap:2.4em;padding:1em 2em;background:#2F5D8A;color:#fff}
.moy-nav b{margin-right:auto;font-size:1.3em}
.moy-banniere{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4em;background:#C9CED6}
.moy-banniere strong{font-size:3em;font-weight:700;color:#3a3f47}
.moy-banniere span{font-size:1.3em;color:#555}
.moy-blocs{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4em;padding:1.6em 2em;text-align:center;font-weight:700}
.moy-blocs i{display:block;height:5em;margin-bottom:.6em;background:#E3E6EA}
.rideau-trait{position:absolute;top:0;bottom:0;left:var(--pos);width:3px;margin-left:-1px;background:var(--or);pointer-events:none}
.rideau-trait::after{content:"";position:absolute;top:50%;left:50%;width:48px;height:14px;margin:-7px 0 0 -24px;background:var(--or)}
.rideau-range{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.rideau:has(.rideau-range:focus-visible){outline:2px solid var(--or-texte);outline-offset:3px}
.rideau-etiq{position:absolute;bottom:12px;padding:6px 10px;background:var(--nuit);color:var(--ivoire);font-size:.9375rem;pointer-events:none}
.rideau-etiq.gauche{left:12px}.rideau-etiq.droite{right:12px}
.tableau{width:100%;margin-top:clamp(40px,6vw,72px);border-collapse:collapse;text-align:left}
.tableau th,.tableau td{padding:18px 24px 18px 0;border-top:1px solid var(--filet-c);vertical-align:top;font-weight:300}
.tableau thead th{border-top:0;font:400 1.375rem/1.2 var(--titre)}
.tableau tbody th{font-weight:400;width:26%}
.tableau td:nth-child(2){color:var(--ardoise)}
.tableau thead th:last-child{box-shadow:inset 0 -3px 0 var(--or)}
.premium-fin{margin-top:32px;font:400 1.5rem/1.3 var(--titre)}
@media (max-width:640px){
  .tableau thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .tableau,.tableau tbody,.tableau tr,.tableau th,.tableau td{display:block;width:auto}
  .tableau tr{padding:18px 0;border-top:1px solid var(--filet-c)}
  .tableau tbody th,.tableau td{padding:0;border:0}
  .tableau tbody th{width:auto;font:400 1.25rem/1.3 var(--titre);margin-bottom:10px}
  .tableau td{margin-top:8px}
  .tableau td::before{display:block;font-weight:400;font-size:.9375rem;color:var(--nuit)}
  .tableau td:nth-child(2)::before{content:"Prix moyen"}
  .tableau td:nth-child(3)::before{content:"Premium";color:var(--or-texte)}
}

/* voies */
.etapes{list-style:none;margin:clamp(48px,7vw,96px) 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.etapes li{border-top:2px solid var(--or);padding-top:20px}
.etapes p{margin-top:10px;color:var(--brume)}
.bientot{margin-top:clamp(56px,8vw,112px);font:400 clamp(1.5rem,3vw,2.5rem)/1.25 var(--titre)}
.bientot b{font-weight:400;color:var(--or)}
@media (max-width:980px){.etapes{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.etapes{grid-template-columns:1fr}}

/* questions */
.faq{margin-top:clamp(32px,5vw,56px);max-width:860px}
.faq details{border-top:1px solid var(--filet-s)}
.faq details:last-child{border-bottom:1px solid var(--filet-s)}
.faq summary{display:flex;justify-content:space-between;gap:24px;padding:22px 0;font:400 1.5rem/1.3 var(--titre);cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:18px;height:18px;margin-top:.3em;background:linear-gradient(var(--or),var(--or)) center/100% 2px no-repeat,linear-gradient(var(--or),var(--or)) center/2px 100% no-repeat}
.faq details[open] summary::after{background:linear-gradient(var(--or),var(--or)) center/100% 2px no-repeat}
.faq p{padding:0 0 24px;color:var(--brume);max-width:36em}

/* contact */
.contact{padding-top:72vh;padding-bottom:clamp(40px,6vw,80px)}
.contact-in{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:48px clamp(32px,6vw,96px)}
.contact-panneau{grid-column:1/-1;display:grid;grid-template-columns:inherit;gap:inherit;padding:clamp(24px,4vw,56px);background:rgba(11,26,46,.9)}
.contact h2{font-size:clamp(2.5rem,5.2vw,5rem)}
.formulaire{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 24px;align-items:start}
.large{grid-column:1/-1}
.piege{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.champ{display:grid;gap:8px;min-width:0}
.champ input,.champ select,.champ textarea{width:100%;min-height:52px;padding:12px 14px;background:var(--nuit-2);border:1px solid rgba(197,206,219,.45);border-radius:0;color:var(--ivoire);font:300 1.0625rem/1.4 var(--texte)}
.champ textarea{resize:vertical}
.champ [aria-invalid="true"]{border-color:var(--erreur-s)}
.erreur{color:var(--erreur-s);font-size:.9375rem}
.erreur:empty,.retour:empty{display:none}
.consent{color:var(--brume);font-size:.9375rem}
.formulaire .bouton{justify-self:start}
@media (max-width:980px){.contact-in,.contact-panneau{grid-template-columns:1fr}.contact-panneau{gap:32px}}
@media (max-width:600px){.formulaire{grid-template-columns:1fr}.formulaire .bouton{width:100%}}

/* pied */
.pied{position:relative;z-index:1;background:var(--nuit);color:var(--brume);border-top:1px solid var(--filet-s)}
.pied-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 40px;padding-top:36px;padding-bottom:calc(30px + env(safe-area-inset-bottom,0px));font-size:1rem}
.pied img{height:38px;width:auto}
.pied nav{display:flex;flex-wrap:wrap;gap:6px 24px}
.pied a{text-decoration:none;padding:8px 0}
.pied a:hover{color:var(--ivoire)}

/* mentions */
.legal{position:relative;z-index:1;max-width:760px;margin-inline:auto;padding:150px var(--gr) 96px var(--gl)}
.legal h1{font-size:clamp(2.25rem,5vw,3.5rem)}
.legal h2{font-size:1.75rem;margin-top:44px;max-width:none}
.legal p{margin-top:12px}
.legal mark{background:#F0E3C4;color:var(--nuit);padding:0 .2em}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}