:root{
    --rouge:#DB1E33;
    --rouge-glow:rgba(219,30,51,.45);
    --fond:#050506;
    --fond-2:#101013;
    --carte:#151518;
    --trait:#28282c;
    --texte:#f5f5f7;
    --texte-2:#a1a1a6;
    --texte-3:#6e6e73;
    --blanc:#ffffff;
    --sans:"Helvetica Neue",Helvetica,Arial,sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:var(--sans);background:var(--fond);color:var(--texte);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  .container{max-width:1180px;margin:0 auto;padding:0 28px}
  ::selection{background:var(--rouge);color:#fff}

  /* retour immédiat à l'appui (pointer-down) */
  .btn:active,.filtres button:active,.c4-scene:active,.c4-toggle:active,.c4-tab:active,
  .c4-widget:active,.c4-source:active,.c4-secmode:active,.c4-lpiece:active,
  .c4-plusmoins button:active,.c4-pieces button:active,.c4-retour:active,
  .galerie figure:active,.c4-cam:active,.burger:active{
    transform:scale(.965);transition:transform .08s ease-out}
  .nav-links a:active{opacity:.55;transition:opacity .06s}

  /* barre de progression */
  #progress{position:fixed;top:0;left:0;height:2px;background:var(--rouge);width:0;z-index:300;box-shadow:0 0 8px var(--rouge-glow)}

  /* ---------- Nav ---------- */
  header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
  header.dense{background:rgba(5,5,6,.72);backdrop-filter:blur(20px) saturate(180%);border-color:rgba(255,255,255,.07)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:76px}
  .nav-logo img{height:42px;width:auto}
  .nav-links{display:flex;gap:34px;list-style:none;align-items:center}
  .nav-links a{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--texte-2);transition:color .2s}
  .nav-links a:hover{color:var(--blanc)}
  .nav-cta{border:1px solid var(--trait);padding:10px 22px;color:var(--texte)!important;transition:all .2s;border-radius:980px}
  .nav-cta:hover{background:var(--rouge);border-color:var(--rouge)}
  .burger{display:none}

  /* ---------- Hero 3D ---------- */
  .hero{position:relative;height:100svh;min-height:640px;display:flex;align-items:flex-end;overflow:hidden}
  #scene3d{position:absolute;inset:0;width:100%;height:100%}
  .hero-fade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,5,6,.25) 0%,rgba(5,5,6,0) 35%,rgba(5,5,6,.82) 88%,var(--fond) 100%);pointer-events:none}
  .hero-inner{position:relative;z-index:2;padding-bottom:96px;pointer-events:none}
  .hero-inner a{pointer-events:auto}
  .hero-logo{height:96px;width:auto;margin-bottom:36px;filter:drop-shadow(0 2px 18px rgba(0,0,0,.6))}
  .hero h1{font-size:clamp(34px,5.2vw,66px);font-weight:700;letter-spacing:-.02em;line-height:1.06;max-width:820px}
  .hero h1 em{font-style:normal;background:linear-gradient(92deg,#ff6a5e 0%,#f5334a 45%,#DB1E33 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero .sub{margin-top:22px;font-size:17px;color:var(--texte-2);max-width:600px}
  .hero .badges{margin-top:18px;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--texte-3)}
  .hero .badges span{color:var(--rouge)}
  .hero-actions{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
  .btn{display:inline-block;padding:15px 34px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;transition:all .25s;border:1px solid transparent;border-radius:980px}
  .btn-rouge{background:var(--rouge);color:#fff}
  .btn-rouge:hover{background:#b7182a;box-shadow:0 6px 28px var(--rouge-glow)}
  .btn-ghost{border-color:rgba(255,255,255,.28);color:#fff}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
  .scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;width:22px;height:36px;border:1px solid rgba(255,255,255,.3);border-radius:11px}
  .scroll-cue::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;border-radius:2px;background:var(--rouge);animation:cue 1.8s infinite}
  @keyframes cue{0%{transform:translateY(0);opacity:1}70%{transform:translateY(12px);opacity:0}100%{opacity:0}}
  .hero-hint{position:absolute;right:34px;bottom:30px;z-index:2;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--texte-3)}

  /* ---------- Sections communes ---------- */
  section{padding:110px 0;position:relative}
  .kicker{font-size:12px;letter-spacing:.26em;text-transform:uppercase;color:var(--rouge);font-weight:600;display:flex;align-items:center;gap:14px}
  .kicker::before{content:"";width:34px;height:1px;background:var(--rouge)}
  h2{font-size:clamp(28px,3.4vw,44px);font-weight:600;letter-spacing:-.01em;margin-top:14px;margin-bottom:18px}
  .lead{color:var(--texte-2);max-width:660px;font-size:16.5px}

  /* reveal au scroll */
  .rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
  .rv.vu{opacity:1;transform:none}
  .rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}.rv-d4{transition-delay:.32s}

  /* ---------- Manifeste ---------- */
  .manifeste{padding:130px 0}
  .manifeste p{font-size:clamp(22px,2.6vw,34px);font-weight:500;letter-spacing:-.008em;line-height:1.45;max-width:900px;color:var(--texte-2)}
  .manifeste strong{color:var(--texte);font-weight:600}
  .manifeste .rouge{color:var(--rouge)}

  /* ---------- Services ---------- */
  .services{background:var(--fond-2);border-top:1px solid var(--trait);border-bottom:1px solid var(--trait)}
  .grid-services{margin-top:60px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  @media (max-width:1060px){.grid-services{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.grid-services{grid-template-columns:1fr}}
  .card{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);border-radius:20px;padding:40px 32px;transition:background .3s,transform .3s,border-color .3s;position:relative;overflow:hidden}
  .card:hover{background:rgba(255,255,255,.075);border-color:rgba(255,255,255,.14);transform:translateY(-3px)}
  .card::after{content:"";position:absolute;left:32px;right:32px;bottom:0;height:2px;width:auto;background:var(--rouge);transform:scaleX(0);transform-origin:left;transition:transform .35s;border-radius:2px}
  .card:hover::after{transform:scaleX(1)}
  .card .ico{width:46px;height:46px;margin-bottom:22px}
  .card .ico svg{width:100%;height:100%;stroke:var(--texte-2);fill:none;stroke-width:1.3;transition:stroke .3s}
  .card:hover .ico svg{stroke:var(--rouge)}
  .card h3{font-size:18px;font-weight:600;margin-bottom:10px;letter-spacing:.02em}
  .card p{font-size:14.5px;color:var(--texte-2)}

  /* ---------- Démo interface Control4 ---------- */
  .simu-sec .note{margin-top:10px;font-size:13px;color:var(--texte-3);letter-spacing:.04em}
  .c4{margin-top:54px;display:grid;grid-template-columns:360px 1fr;gap:26px;align-items:stretch}
  /* panneau tactile */
  .c4-panel{background:linear-gradient(170deg,#17171b,#0a0a0d);border:1px solid #2c2c33;border-radius:24px;padding:24px 22px;box-shadow:0 24px 70px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06);display:flex;flex-direction:column;gap:18px}
  .c4-top{display:flex;justify-content:space-between;align-items:center}
  .c4-piece{font-size:15px;font-weight:600;letter-spacing:.04em}
  .c4-meta{font-size:12px;color:var(--texte-3);letter-spacing:.08em}
  .c4-pieces{display:flex;gap:8px}
  .c4-pieces button{flex:1;background:none;border:1px solid #2c2c33;color:var(--texte-2);padding:9px 4px;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;font-family:inherit;border-radius:8px;transition:all .2s}
  .c4-pieces button:hover{border-color:#4a4a52;color:var(--texte)}
  .c4-pieces button.actif{border-color:var(--rouge);color:#fff;background:rgba(219,30,51,.12)}
  .c4-bloc .etiq{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--texte-3);margin-bottom:10px}
  .c4-scenes{display:grid;grid-template-columns:1fr 1fr;gap:9px}
  .c4-scene{display:flex;flex-direction:column;align-items:flex-start;gap:7px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:13px 14px;cursor:pointer;transition:all .2s;font-family:inherit;color:var(--texte-2);font-size:12.5px;letter-spacing:.05em}
  .c4-scene:hover{border-color:#4a4a52;color:var(--texte)}
  .c4-scene.actif{color:#fff;border-color:rgba(219,30,51,.55);box-shadow:0 0 0 1px rgba(219,30,51,.2),0 4px 18px rgba(219,30,51,.12)}
  .c4-scene .led{width:6px;height:6px;border-radius:50%;background:#3a3a41;transition:all .25s}
  .c4-scene.actif .led{background:var(--rouge);box-shadow:0 0 9px var(--rouge)}
  .c4-slider{display:flex;align-items:center;gap:14px}
  .c4-slider input{flex:1;-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:#2c2c33;outline:none}
  .c4-slider input::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--rouge);cursor:pointer;box-shadow:0 2px 10px rgba(0,0,0,.5)}
  .c4-slider input::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--rouge);cursor:pointer}
  .c4-slider .pct{font-size:12px;color:var(--texte-2);width:38px;text-align:right;font-variant-numeric:tabular-nums}
  .c4-toggles{display:grid;grid-template-columns:1fr 1fr;gap:9px}
  .c4-toggle{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:12px 14px;cursor:pointer;transition:all .2s;font-family:inherit;color:var(--texte-2);font-size:12.5px;letter-spacing:.05em}
  .c4-toggle:hover{border-color:#4a4a52;color:var(--texte)}
  .c4-toggle .sw{width:34px;height:19px;border-radius:10px;background:#2c2c33;position:relative;transition:background .25s;flex-shrink:0}
  .c4-toggle .sw::after{content:"";position:absolute;top:2px;left:2px;width:15px;height:15px;border-radius:50%;background:#8a8a92;transition:all .25s}
  .c4-toggle.actif{color:#fff}
  .c4-toggle.actif .sw{background:var(--rouge)}
  .c4-toggle.actif .sw::after{left:17px;background:#fff}
  .c4-pied{margin-top:auto;text-align:center;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--texte-3)}
  /* onglets bas type OS 3 */
  .c4-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;border-top:1px solid #26262c;padding-top:14px}
  .c4-tab{display:flex;flex-direction:column;align-items:center;gap:6px;background:none;border:none;cursor:pointer;font-family:inherit;color:var(--texte-3);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;padding:8px 4px;border-radius:8px;transition:all .2s}
  .c4-tab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.5}
  .c4-tab:hover{color:var(--texte-2)}
  .c4-tab.actif{color:#fff}
  .c4-tab.actif svg{stroke:var(--rouge)}
  .c4-page{display:flex;flex-direction:column;gap:20px;min-height:298px}
  /* barre média active */
  .c4-mediabar{display:flex;align-items:center;gap:10px;background:rgba(219,30,51,.1);border:1px solid rgba(219,30,51,.35);border-radius:8px;padding:9px 13px;font-size:12px;color:var(--texte);letter-spacing:.05em}
  .c4-mediabar .pulse{width:8px;height:8px;border-radius:50%;background:var(--rouge);animation:pulseMedia 1.4s infinite}
  @keyframes pulseMedia{0%,100%{opacity:1}50%{opacity:.35}}
  .c4-mediabar[hidden]{display:none}
  /* thermostat */
  .c4-clim{display:flex;flex-direction:column;align-items:center;gap:14px}
  .c4-cadran{position:relative;width:200px;height:200px}
  .c4-cadran svg{width:100%;height:100%;transform:rotate(135deg)}
  .c4-cadran .fond{fill:none;stroke:#26262c;stroke-width:10;stroke-linecap:round}
  .c4-cadran .arc{fill:none;stroke:var(--rouge);stroke-width:10;stroke-linecap:round;transition:stroke-dashoffset .5s ease,stroke .5s}
  .c4-cadran .centre{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
  .c4-cadran .consigne{font-size:38px;font-weight:600;letter-spacing:-.01em}
  .c4-cadran .consigne sup{font-size:16px;font-weight:400}
  .c4-cadran .mode{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--texte-3)}
  .c4-plusmoins{display:flex;gap:14px}
  .c4-plusmoins button{width:52px;height:52px;border-radius:50%;background:linear-gradient(180deg,#222228,#17171c);border:1px solid #2e2e35;color:var(--texte);font-size:24px;cursor:pointer;font-family:inherit;transition:all .2s;line-height:1}
  .c4-plusmoins button:hover{border-color:var(--rouge);color:#fff}
  .c4-clim .actuel{font-size:12px;color:var(--texte-3);letter-spacing:.08em}
  /* page média */
  .c4-media{display:flex;flex-direction:column;gap:12px}
  .c4-source{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px 16px;cursor:pointer;transition:all .2s;font-family:inherit;color:var(--texte-2);font-size:13px;letter-spacing:.05em;width:100%}
  .c4-source:hover{border-color:#4a4a52;color:var(--texte)}
  .c4-source.actif{color:#fff;border-color:rgba(219,30,51,.55)}
  .c4-source .badge{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--texte-3)}
  .c4-source.principal{border-color:rgba(219,30,51,.4);background:linear-gradient(180deg,rgba(219,30,51,.16),rgba(219,30,51,.05));color:#fff;justify-content:center;font-size:13px;letter-spacing:.14em;text-transform:uppercase;padding:16px}
  .c4-source.principal:hover{border-color:var(--rouge);box-shadow:0 4px 20px rgba(219,30,51,.2)}
  .c4-source[disabled]{opacity:.45;cursor:default;pointer-events:none}
  /* accueil à widgets */
  .c4-widgets{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .c4-widget{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:14px 13px;display:flex;flex-direction:column;align-items:flex-start;gap:8px;cursor:pointer;font-family:inherit;color:var(--texte-2);text-align:left;transition:all .2s}
  .c4-widget:hover{background:rgba(255,255,255,.09);color:var(--texte)}
  .c4-widget svg{width:21px;height:21px;stroke:var(--texte-2);fill:none;stroke-width:1.5}
  .c4-widget.on svg{stroke:var(--rouge)}
  .c4-widget .w-nom{font-size:12px;letter-spacing:.08em;color:var(--texte);font-weight:500}
  .c4-widget .w-etat{font-size:10.5px;letter-spacing:.05em;color:var(--texte-3);min-height:14px}
  .c4-widget.on .w-etat{color:var(--texte-2)}
  /* bouton retour */
  .c4-retour{display:flex;align-items:center;gap:8px;background:none;border:none;color:var(--texte-2);font-family:inherit;font-size:12px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;padding:0;transition:color .2s}
  .c4-retour:hover{color:#fff}
  .c4-retour::before{content:"‹";font-size:18px;line-height:1}
  /* pièces */
  .c4-lpieces{display:flex;flex-direction:column;gap:9px}
  .c4-lpiece{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:15px 16px;cursor:pointer;font-family:inherit;color:var(--texte-2);font-size:13px;letter-spacing:.06em;transition:all .2s}
  .c4-lpiece:hover{color:#fff;border-color:rgba(255,255,255,.2)}
  .c4-lpiece.actif{border-color:rgba(219,30,51,.55);color:#fff}
  .c4-lpiece .sous{font-size:10.5px;color:var(--texte-3);letter-spacing:.04em}
  /* caméras */
  .c4-cams{display:grid;grid-template-columns:1fr;gap:10px}
  .c4-cam{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:16/7;cursor:pointer;border:1px solid rgba(255,255,255,.08);background:#050607;padding:0}
  .c4-cam svg{position:absolute;inset:0;width:100%;height:100%}
  .c4-cam .cam-tag{position:absolute;left:10px;bottom:8px;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:#dfe3e8;text-shadow:0 1px 4px #000}
  .c4-cam .cam-rec{position:absolute;right:10px;top:8px;display:flex;align-items:center;gap:5px;font-size:9px;letter-spacing:.12em;color:#ff6b7a;text-shadow:0 1px 4px #000}
  .c4-cam .cam-rec::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--rouge);animation:pulseMedia 1.2s infinite}
  /* vue caméra plein cadre dans la scène */
  .c4-camview{position:absolute;inset:0;z-index:6;background:#040507;display:flex;flex-direction:column;opacity:0;pointer-events:none;transform:scale(.985);transition:opacity .26s ease,transform .3s cubic-bezier(.2,.9,.3,1)}
  .c4-camview.ouverte{opacity:1;pointer-events:auto;transform:none}
  .c4-camview .cv-haut{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:#dfe3e8;background:rgba(0,0,0,.4);z-index:2}
  .c4-camview .cv-haut .cv-rec{color:#ff6b7a;display:flex;align-items:center;gap:6px}
  .c4-camview .cv-haut .cv-rec::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--rouge);animation:pulseMedia 1.2s infinite}
  .c4-camview .cv-fermer{background:none;border:none;color:#fff;font-size:26px;cursor:pointer;line-height:1;padding:2px 6px;opacity:.8}
  .c4-camview svg{position:absolute;inset:0;width:100%;height:100%}
  .c4-camview .cv-bas{position:absolute;left:18px;bottom:14px;font-size:11px;letter-spacing:.14em;color:#aeb6bf;text-shadow:0 1px 4px #000;z-index:2}
  /* sécurité */
  .c4-secmodes{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
  .c4-secmode{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:13px 6px;cursor:pointer;font-family:inherit;color:var(--texte-2);font-size:11px;letter-spacing:.1em;text-transform:uppercase;text-align:center;transition:all .2s}
  .c4-secmode:hover{color:#fff}
  .c4-secmode.actif{border-color:rgba(219,30,51,.6);color:#fff;background:rgba(219,30,51,.12)}
  .c4-zones{list-style:none;display:flex;flex-direction:column;gap:8px}
  .c4-zones li{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--texte-2);letter-spacing:.04em;padding:9px 12px;background:rgba(255,255,255,.03);border-radius:10px}
  .c4-zones .pt{width:7px;height:7px;border-radius:50%;background:#3ea56b;box-shadow:0 0 8px rgba(62,165,107,.6);flex-shrink:0}
  .c4-zones li.armee .pt{background:var(--rouge);box-shadow:0 0 8px var(--rouge-glow)}
  .c4-sec-etat{text-align:center;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--texte-3);padding:10px;border:1px dashed rgba(255,255,255,.12);border-radius:12px}
  .c4-sec-etat.armee{color:#ff8b96;border-color:rgba(219,30,51,.5)}
  /* TV : sources colorées */
  .c4-tvsrc{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
  /* couches TV dans les pièces */
  .c4-stage .tv-ecran{fill:var(--tvCouleur,#4a7dc9);opacity:var(--oTvR,0)}
  .c4-stage .tv-blob{fill:#ffffff;opacity:calc(var(--oTvR,0)*0.3)}
  .c4-stage .tv-lueur{fill:var(--tvCouleur,#4a7dc9);opacity:calc(var(--oTvR,0)*0.3)}
  /* fondus lents pendant les automatisations */
  .c4-stage.fondu-lent .fx{transition-duration:2.6s}
  /* couches spécifiques terrasse / écran */
  .c4-stage .pool-lueur{fill:#35d4f0;opacity:var(--oPool,0)}
  .c4-stage .pool-ruban{stroke:var(--led,#ffc98a);opacity:var(--oCove,0);fill:none}
  .c4-stage .fenetre{fill:#ffc98a;opacity:var(--oFen,0)}
  .c4-stage .ecran-grp{transform:translateY(var(--ecranY,-252px));transition:transform 3.2s cubic-bezier(.45,0,.25,1)}
  .c4-stage .borne{fill:var(--led,#ffc98a);opacity:var(--oSpots,0)}
  .c4-stage .borne-lueur{fill:var(--led,#ffc98a);opacity:calc(var(--oSpots,0)*0.3)}
  .c4-stage .arbre-cone{fill:var(--led,#ffc98a);opacity:calc(var(--oSpots,0)*0.13)}
  /* scène visuelle */
  .c4-stage{position:relative;border:1px solid var(--trait);border-radius:18px;overflow:hidden;background:#0a0a0d;min-height:520px}
  .c4-stage svg{position:absolute;inset:0;width:100%;height:100%}
  .c4-etat{position:absolute;left:20px;bottom:16px;z-index:3;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:#fff;background:rgba(10,10,13,.55);backdrop-filter:blur(10px) saturate(160%);padding:10px 18px;border:1px solid rgba(255,255,255,.09);border-radius:980px}
  .c4-visite-badge{position:absolute;right:16px;top:14px;z-index:4;display:none;align-items:center;gap:8px;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:#fff;background:rgba(219,30,51,.85);padding:8px 14px;border-radius:20px}
  .c4-visite-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:#fff;animation:pulseMedia 1.2s infinite}
  .c4-stage.en-visite .c4-visite-badge{display:flex}
  /* couches lumineuses des visuels */
  .c4-stage .fx{transition:opacity .8s ease,fill .8s ease}
  .c4-stage .cove-glow,.c4-stage .cove-line{fill:var(--led,#ffc98a);opacity:var(--oCove,0)}
  .c4-stage .cove-wash{fill:var(--led,#ffc98a);opacity:var(--oWash,0)}
  .c4-stage .spot-cone{fill:var(--led,#ffc98a);opacity:calc(var(--oSpots,0)*0.16)}
  .c4-stage .spot-pool{fill:var(--led,#ffc98a);opacity:calc(var(--oSpots,0)*0.4)}
  .c4-stage .sol-reflet{fill:var(--led,#ffc98a);opacity:var(--oRefl,0)}
  .c4-stage .sofa-edge,.c4-stage .meuble-edge{stroke:var(--led,#ffc98a);opacity:var(--oEdge,0)}
  .c4-stage .lampe-lueur{fill:#ffc07a;opacity:var(--oLampe,0)}
  .c4-stage .piscine-lueur{fill:#1fa8cc;opacity:0.5}
  .c4-stage .stores-grp{transform:translateY(var(--storesY,-352px));transition:transform 1.6s cubic-bezier(.4,0,.2,1)}
  .c4-stage .ecran-on{opacity:var(--oTv,0)}
  .c4-stage .ecran-halo{fill:#6f9bd8;opacity:calc(var(--oTv,0)*0.28)}
  .c4-stage .ecran-spill{fill:#9db8e8;opacity:calc(var(--oTv,0)*0.14)}
  .c4-stage .etoile{fill:#cfe0ff;opacity:var(--oStars,0)}
  .c4-stage .marche{fill:var(--led,#ffc98a);opacity:calc(var(--oCove,0)*0.55)}
  .c4-stage .spk-led{fill:var(--rouge);opacity:0.8}
  .c4-stage .eq-b{fill:var(--rouge);opacity:var(--oEq,0);transform-origin:bottom;transform-box:fill-box;animation:eqAnim 0.9s ease-in-out infinite alternate}
  .c4-stage .eq-b.b2{animation-duration:0.7s;animation-delay:.15s}
  .c4-stage .eq-b.b3{animation-duration:1.1s;animation-delay:.3s}
  @keyframes eqAnim{from{transform:scaleY(.35)}to{transform:scaleY(1)}}
  @media (prefers-reduced-motion:reduce){.c4-stage .eq-b{animation:none}}

  /* ---------- Réalisations ---------- */
  .realisations{background:var(--fond)}
  .filtres{margin-top:40px;display:flex;gap:10px;flex-wrap:wrap}
  .filtres button{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);color:var(--texte-2);padding:10px 22px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;cursor:pointer;font-family:inherit;transition:all .2s;border-radius:980px}
  .filtres button:hover{border-color:var(--texte-3);color:var(--texte)}
  .filtres button.actif{background:var(--rouge);border-color:var(--rouge);color:#fff}
  .galerie{margin-top:38px;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
  .galerie figure{position:relative;margin:0;cursor:pointer;overflow:hidden;aspect-ratio:4/3;background:var(--carte);border-radius:16px}
  .galerie img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease,filter .45s ease;display:block}
  .galerie figure:hover img{transform:scale(1.06)}
  .galerie figcaption{position:absolute;left:0;right:0;bottom:0;padding:30px 16px 13px;font-size:12.5px;letter-spacing:.05em;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.8));opacity:0;transition:opacity .3s}
  .galerie figure:hover figcaption{opacity:1}
  .galerie figure.masque{display:none}

  /* Lightbox */
  .lightbox{position:fixed;inset:0;z-index:200;background:rgba(8,8,10,.82);backdrop-filter:blur(22px) saturate(140%);display:flex;align-items:center;justify-content:center;flex-direction:column;padding:24px;opacity:0;pointer-events:none;transition:opacity .28s ease}
  .lightbox.ouverte{opacity:1;pointer-events:auto}
  .lightbox img{touch-action:none;cursor:grab;will-change:transform}
  .lightbox img:active{cursor:grabbing}
  .lightbox.ouverte img{animation:lbEntre .32s cubic-bezier(.2,.9,.3,1)}
  @keyframes lbEntre{from{transform:scale(.96);opacity:.4}to{transform:scale(1);opacity:1}}
  .lightbox img{max-width:min(92vw,680px);max-height:78vh;object-fit:contain}
  .lightbox .lb-legende{margin-top:14px;color:var(--texte-2);font-size:14px;text-align:center}
  .lightbox button{position:absolute;background:none;border:none;color:#fff;font-size:36px;cursor:pointer;padding:16px;line-height:1;opacity:.65;transition:opacity .2s;font-family:inherit}
  .lightbox button:hover{opacity:1}
  .lb-fermer{top:12px;right:16px}
  .lb-prec{left:8px;top:50%;transform:translateY(-50%)}
  .lb-suiv{right:8px;top:50%;transform:translateY(-50%)}

  /* ---------- Architectes (respiration claire) ---------- */
  .archi{background:#f4f3f0;color:#111}
  .archi .lead{color:#5c5c63}
  .archi .cols{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;margin-top:44px}
  .archi .illu{border:1px solid #e2e0da;padding:20px;background:#fff;border-radius:20px;box-shadow:0 30px 70px rgba(0,0,0,.1)}
  .archi .illu svg{width:100%;height:auto;display:block}
  .archi ul{list-style:none}
  .archi li{padding:19px 0;border-bottom:1px solid #e2e0da}
  .archi li strong{font-weight:600;display:block;margin-bottom:4px}
  .archi li span{color:#5c5c63;font-size:14.5px}
  .archi .cta-ligne{margin-top:36px}

  /* ---------- Méthode timeline ---------- */
  .methode{background:var(--fond-2);border-top:1px solid var(--trait);border-bottom:1px solid var(--trait)}
  .timeline{margin-top:70px;display:grid;grid-template-columns:repeat(4,1fr);gap:34px;position:relative}
  .timeline::before{content:"";position:absolute;top:7px;left:0;right:0;height:1px;background:var(--trait)}
  .timeline .fil{position:absolute;top:7px;left:0;height:1px;background:var(--rouge);width:0;transition:width 1.6s ease;box-shadow:0 0 8px var(--rouge-glow)}
  .etape{position:relative;padding-top:34px}
  .etape::before{content:"";position:absolute;top:0;left:0;width:15px;height:15px;border-radius:50%;border:1px solid var(--rouge);background:var(--fond-2)}
  .etape::after{content:"";position:absolute;top:4px;left:4px;width:7px;height:7px;border-radius:50%;background:var(--rouge);opacity:0;transition:opacity .4s}
  .timeline.actif .etape::after{opacity:1}
  .etape .num{font-size:12px;letter-spacing:.2em;color:var(--texte-3)}
  .etape h3{font-size:16px;letter-spacing:.1em;text-transform:uppercase;margin:10px 0 10px;font-weight:600}
  .etape p{font-size:14px;color:var(--texte-2)}

  /* ---------- FAQ ---------- */
  .faq{background:var(--fond-2);border-top:1px solid var(--trait)}
  .faq-liste{margin-top:40px;max-width:780px}
  .faq details{border-bottom:1px solid var(--trait)}
  .faq summary{cursor:pointer;padding:20px 36px 20px 0;font-size:16.5px;font-weight:500;list-style:none;position:relative;transition:color .2s}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);color:var(--rouge);font-size:22px;font-weight:300;transition:transform .25s}
  .faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
  .faq summary:hover{color:var(--rouge)}
  .faq details p{padding:0 0 20px;color:var(--texte-2);font-size:15px;max-width:680px}

  /* ---------- Contact ---------- */
  .contact .wrap{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin-top:30px}
  .contact-item{padding:24px 0;border-bottom:1px solid var(--trait)}
  .contact-item .label{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--texte-3)}
  .contact-item a,.contact-item .val{font-size:clamp(20px,2.4vw,28px);font-weight:500;margin-top:6px;display:inline-block;transition:color .2s}
  .contact-item a:hover{color:var(--rouge)}
  .zone{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);border-radius:20px;padding:38px}
  .zone h3{font-size:14px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
  .zone p{color:var(--texte-2);font-size:15px}

  /* ---------- Footer ---------- */
  footer{background:#000000;color:var(--texte-3);padding:52px 0;font-size:13px;border-top:1px solid var(--trait)}
  footer .row{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
  footer img{height:38px;opacity:.85}
  footer .tag{letter-spacing:.16em;text-transform:uppercase;font-size:11px}

  /* ---------- Mobile ---------- */
  @media (max-width:820px){
    .nav-links{display:none}
    .burger{display:block;background:none;border:none;cursor:pointer;padding:8px}
    .burger span{display:block;width:24px;height:2px;background:var(--texte);margin:5px 0;transition:.3s}
    .nav-links.open{display:flex;position:absolute;top:76px;left:0;right:0;background:rgba(5,5,6,.97);backdrop-filter:blur(12px);flex-direction:column;padding:26px;gap:20px;border-bottom:1px solid var(--trait)}
    .hero-inner{padding-bottom:80px}
    .hero-logo{display:none}
    .hero-hint{display:none}
    section{padding:80px 0}
    .c4{grid-template-columns:1fr}
    .c4-stage{min-height:340px}
    .archi .cols,.contact .wrap{grid-template-columns:1fr;gap:40px}
    .timeline{grid-template-columns:1fr;gap:40px}
    .timeline::before,.timeline .fil{display:none}
  }
  @media (prefers-reduced-transparency:reduce){
    header,header.dense{background:#0c0c0e;backdrop-filter:none}
    .lightbox{background:rgba(8,8,10,.97);backdrop-filter:none}
    .c4-mediabar{background:#1d1216}
  }
  @media (prefers-contrast:more){
    :root{--texte-2:#d4d4da;--texte-3:#a5a5ae;--trait:#4a4a52}
    header.dense{border-color:#5a5a62}
  }
  @media (prefers-reduced-motion:reduce){
    .rv{opacity:1;transform:none;transition:none}
    .c4-stage .stores-grp,.c4-stage .ecran-grp{transition-duration:0s}
    .lightbox.ouverte img{animation:none}
    .c4-camview{transition:opacity .2s;transform:none}
    .scroll-cue::after{animation:none}
    html{scroll-behavior:auto}
  }

  /* ---------- Pages savoir-faire ---------- */
  .sous-hero{padding:170px 0 70px;background:var(--fond)}
  .sous-hero h1{font-size:clamp(32px,4.6vw,56px);font-weight:700;letter-spacing:-.02em;line-height:1.07;max-width:760px;margin-top:14px}
  .sous-hero .lead{margin-top:18px}
  .fil{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--texte-3)}
  .fil a{transition:color .2s}
  .fil a:hover{color:var(--texte)}
  .prose{max-width:720px}
  .prose p{color:var(--texte-2);font-size:16.5px;margin-bottom:18px}
  .prose strong{color:var(--texte);font-weight:600}
  .livrables{margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:820px}
  .livrables li{list-style:none;display:flex;gap:12px;align-items:baseline;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);border-radius:14px;padding:16px 18px;color:var(--texte-2);font-size:14.5px}
  .livrables li::before{content:"—";color:var(--rouge);font-weight:700;flex-shrink:0}
  .duo-photos{margin-top:56px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
  .duo-photos img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px}
  .cta-bande{margin:80px 0 0;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);border-radius:24px;padding:52px 40px;text-align:center}
  .cta-bande h2{margin-bottom:10px}
  .cta-bande p{color:var(--texte-2);margin-bottom:26px}
  .autres{margin-top:60px;display:flex;gap:10px;flex-wrap:wrap}
  .autres a{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);border-radius:980px;padding:10px 20px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--texte-2);transition:all .2s}
  .autres a:hover{color:#fff;border-color:rgba(255,255,255,.25)}
  @media (max-width:760px){.livrables{grid-template-columns:1fr}.sous-hero{padding:140px 0 56px}}