:root{
    --bleu:#0f1e30; --bleu-2:#16324e; --orange:#C4161D; --orange-2:#9d1117;
    --creme:#f7f5f1; --gris:#5b6570; --blanc:#ffffff; --radius:10px;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;color:var(--bleu);background:var(--blanc);line-height:1.6}
  img{max-width:100%}
  a{text-decoration:none;color:inherit}
  .wrap{max-width:1180px;margin:0 auto;padding:0 24px}
  h1,h2,h3{line-height:1.15;font-weight:800;letter-spacing:-.01em}
  .kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);margin-bottom:14px}
  .section{padding:80px 0}
  .section.alt{background:var(--creme)}
  .section h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin-bottom:16px}
  .lead{color:var(--gris);font-size:1.05rem;max-width:660px}
  .btn{display:inline-block;padding:14px 28px;border-radius:6px;font-weight:700;font-size:.95rem;transition:.2s;cursor:pointer;border:0}
  .btn-orange{background:var(--orange);color:#fff}
  .btn-orange:hover{background:var(--orange-2)}
  .btn-ghost{border:2px solid rgba(255,255,255,.55);color:#fff}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
  .btn-dark{background:var(--bleu);color:#fff}
  .btn-dark:hover{background:var(--bleu-2)}

  /* Header premium clair — logo officiel */
  header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);color:var(--bleu);border-bottom:1px solid #e9e4dc;box-shadow:0 6px 24px rgba(15,30,48,.08)}
  header::before{content:"";display:block;height:3px;background:linear-gradient(90deg,var(--orange) 0%,#d9484d 55%,var(--orange) 100%)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:112px;gap:20px}
  .logo{display:flex;align-items:center}
  .logo img{height:96px;width:auto;display:block}
  nav ul{display:flex;gap:32px;list-style:none;font-size:1rem;font-weight:600;letter-spacing:.01em}
  nav a{color:var(--bleu-2);opacity:.85;padding:8px 0;position:relative;white-space:nowrap}
  nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--orange);transition:right .25s ease}
  nav a:hover{opacity:1}
  nav a:hover::after{right:0}
  nav a.active{opacity:1;color:var(--orange)}
  nav a.active::after{right:0}
  .nav-cta{background:var(--orange);padding:13px 24px;border-radius:6px;font-weight:700;white-space:nowrap;font-size:.88rem;box-shadow:0 6px 18px rgba(195,22,28,.35);transition:.2s}
  .nav-cta:hover{background:var(--orange-2);transform:translateY(-1px)}
  /* Bouton menu mobile (burger) */
  .burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:48px;height:48px;border:0;background:transparent;cursor:pointer;padding:11px;margin-left:auto}
  .burger span{display:block;height:3px;width:100%;background:var(--bleu);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
  .burger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .topbar{background:var(--bleu);font-size:.78rem;padding:8px 0;color:#9fb2c5}
  .topbar .wrap{display:flex;justify-content:flex-start;align-items:center;gap:16px;flex-wrap:wrap}
  .tb-social{display:flex;gap:16px;align-items:center}
  .tb-social a{display:block;opacity:.75;transition:.2s}
  .tb-social a:hover{opacity:1}
  .tb-social svg{width:16px;height:16px;fill:#ffffff;display:block}
  .tb-contact{background:var(--orange);color:#fff;font-weight:700;font-size:.78rem;padding:7px 18px;border-radius:5px;letter-spacing:.04em}
  .tb-contact:hover{background:var(--orange-2)}
  .flogo{display:flex;align-items:center;gap:12px;margin-bottom:16px}
  .flogo svg{height:52px;width:52px}
  .flogo .word b{font-weight:800;font-size:1.25rem;letter-spacing:.1em;color:#fff;display:block;line-height:1}
  .flogo .word small{font-size:.55rem;font-weight:700;letter-spacing:.3em;color:#9fb2c5;text-transform:uppercase}
  @media(max-width:920px){.logo img{height:66px}.nav{height:92px}}

  /* Pages */
  .page{display:block}
  .page.visible{display:block}

  /* Bannière interne de page */
  .pagehero{position:relative;min-height:44vh;display:flex;align-items:flex-end;color:#fff;
    background:linear-gradient(100deg,rgba(15,30,48,.9),rgba(15,30,48,.45)),var(--creme)}
  .pagehero .wrap{padding-top:70px;padding-bottom:44px}
  .pagehero h1{font-size:clamp(1.9rem,4vw,2.9rem)}
  .pagehero p{color:#dbe4ee;max-width:620px;margin-top:10px;font-size:1.05rem}
  .ph-drone2,.ph-flat{background-image:linear-gradient(100deg,rgba(15,30,48,.9),rgba(15,30,48,.5)),url("../photos/_accueil-hero-A.jpg");background-size:cover;background-position:center 22%}
  .ph-drone2,.ph-flat{background-image:linear-gradient(100deg,rgba(15,30,48,.9),rgba(15,30,48,.5)),image-set(url("../photos/_accueil-hero-A.webp") type("image/webp"),url("../photos/_accueil-hero-A.jpg") type("image/jpeg"))}

  /* HERO accueil */
  .hero{position:relative;min-height:86vh;display:flex;align-items:center;color:#fff;
    background:linear-gradient(100deg,rgba(15,30,48,.92) 0%,rgba(15,30,48,.62) 45%,rgba(15,30,48,.28) 100%),url("../photos/_accueil-hero-B.jpg") center/cover no-repeat}
  .hero{background-image:linear-gradient(100deg,rgba(15,30,48,.92) 0%,rgba(15,30,48,.62) 45%,rgba(15,30,48,.28) 100%),image-set(url("../photos/_accueil-hero-B.webp") type("image/webp"),url("../photos/_accueil-hero-B.jpg") type("image/jpeg"))}
  .hero .badge-photo{position:absolute;right:26px;bottom:22px;font-size:.7rem;letter-spacing:.06em;color:rgba(255,255,255,.65);background:rgba(15,30,48,.5);padding:5px 10px;border-radius:6px}
  .hero-inner{padding:100px 0}
  .hero h1{font-size:clamp(2.1rem,5vw,3.5rem);max-width:780px;margin:14px 0 20px}
  .hero h1 em{font-style:normal;color:var(--orange)}
  .hero p{max-width:560px;font-size:1.1rem;color:#dbe4ee;margin-bottom:32px;text-align:justify}
  .hero .actions{display:flex;gap:16px;flex-wrap:wrap}
  .hero .quali{margin-top:42px;display:flex;align-items:center;gap:12px;font-size:.85rem;color:#c8d4e0}
  .hero .quali .q{width:44px;height:44px;border-radius:8px;background:#fff;color:var(--bleu);display:grid;place-items:center;font-weight:800;font-size:.55rem;text-align:center;line-height:1.1}

  @keyframes wheel2{0%{opacity:1;top:5px}100%{opacity:0;top:14px}}
  @media(max-width:980px){
    .build-wrap{height:auto}
    .build-sticky{position:static;height:auto}
    .build-sticky .wrap{display:block;padding-top:90px;padding-bottom:60px}
    .scene-col,.stage-chip,.scroll-hint2{display:none}
  }

  /* Chiffres */
  .stats{background:var(--orange);color:#fff}
  .stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:38px;padding-bottom:38px}
  .stat{text-align:center}
  .stat b{display:block;font-size:2.2rem;font-weight:800}
  .stat span{font-size:.85rem;opacity:.92}
  .stats .note{grid-column:1/-1;text-align:center;font-size:.72rem;opacity:.8}

  /* Cartes */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:42px}
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:42px}
  .card{background:#fff;border:1px solid #e6e2da;border-radius:var(--radius);padding:30px;transition:.2s}
  .card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,30,48,.10);border-color:var(--orange)}
  .card .ico{width:52px;height:52px;border-radius:10px;background:var(--creme);display:grid;place-items:center;margin-bottom:18px;font-size:1.4rem}
  .card h3{font-size:1.12rem;margin-bottom:10px}
  .card p{color:var(--gris);font-size:.94rem}
  .card ul{margin:12px 0 0 18px;color:var(--gris);font-size:.92rem}
  .card a{display:inline-block;margin-top:14px;color:var(--orange);font-weight:700;font-size:.9rem}

  /* Références */
  .filters{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
  .filters button{padding:9px 18px;border-radius:24px;border:1.5px solid #d9d4ca;background:#fff;font:inherit;font-size:.85rem;font-weight:700;cursor:pointer;color:var(--bleu-2)}
  .filters button.on{background:var(--bleu);color:#fff;border-color:var(--bleu)}
  .refs{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:34px}
  .ref{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid #e6e2da;transition:.2s}
  .ref:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,30,48,.12)}
  .ref .ph{height:200px;position:relative;display:flex;align-items:flex-end;padding:12px;background-size:cover;background-position:center}
  .ref .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .ref .ph.has-photo>span{display:none}
  .ref .ph span{position:relative;z-index:2;font-size:.66rem;letter-spacing:.06em;color:rgba(255,255,255,.85);background:rgba(15,30,48,.55);padding:4px 8px;border-radius:5px}
  .g1{background-image:linear-gradient(160deg,#33506f,#1b2f45)}
  .g2{background-image:linear-gradient(160deg,#6d7f90,#3c4f61)}
  .g3{background-image:linear-gradient(160deg,#8a6f52,#4f3e2c)}
  .ref .body{padding:20px}
  .ref .tag{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;background:var(--creme);color:var(--bleu-2);padding:4px 10px;border-radius:20px;margin-bottom:10px}
  .ref h3{font-size:1.08rem}
  .ref .meta{color:var(--gris);font-size:.86rem;margin-top:5px}
  .ref .num{margin-top:10px;font-weight:800;color:var(--orange);font-size:.98rem}
  .center{text-align:center;margin-top:42px}
  .oplist-wrap{margin-top:50px;border-top:1px solid #e6e2da;padding-top:34px}
  .oplist-wrap h3{font-size:1.25rem;margin-bottom:6px}
  .oplist-wrap .sub{color:var(--gris);font-size:.92rem;margin-bottom:22px}
  .oplist{columns:3;column-gap:40px;list-style:none;font-size:.88rem}
  .oplist li{margin-bottom:9px;break-inside:avoid;color:var(--gris)}
  .oplist li b{color:var(--bleu);font-weight:700}
  .oplist li.moa{margin:14px 0 8px;color:var(--orange);font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;break-after:avoid}
  .oplist li.moa:first-child{margin-top:0}
  #toggleList{margin-top:26px}
  @media(max-width:920px){.oplist{columns:1}}

  /* divers */
  .clients{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:42px}
  .client{background:#fff;border-radius:var(--radius);padding:26px;border:1px solid #e6e2da;text-align:center}
  .client .em{font-size:1.7rem;display:block;margin-bottom:12px}
  .client b{display:block;font-size:1rem;margin-bottom:6px}
  .client span{color:var(--gris);font-size:.85rem}
  .dark{background:var(--bleu);color:#fff}
  .dark .lead{color:#c8d4e0}
  .dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14)}
  .dark .card h3{color:#fff}
  .dark .card p,.dark .card ul{color:#c8d4e0}
  .split{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
  .checks{list-style:none;margin-top:26px;display:grid;gap:14px}
  .checks li{display:flex;gap:12px;align-items:flex-start;font-size:.97rem;color:#dbe4ee}
  .checks li::before{content:"✓";flex:0 0 24px;height:24px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:800}
  .light .checks li{color:var(--gris)}
  .photo-block{height:380px;border-radius:var(--radius);background-size:cover;background-position:center;position:relative}
  .photo-block span{position:absolute;right:14px;bottom:12px;font-size:.68rem;color:rgba(255,255,255,.8);background:rgba(15,30,48,.55);padding:4px 8px;border-radius:5px}
  .pb-bretteville{background-image:linear-gradient(20deg,rgba(15,30,48,.3),rgba(15,30,48,0)),url("../photos/_qui-sommes-nous.jpg")}
  .pb-bretteville{background-image:linear-gradient(20deg,rgba(15,30,48,.3),rgba(15,30,48,0)),image-set(url("../photos/_qui-sommes-nous.webp") type("image/webp"),url("../photos/_qui-sommes-nous.jpg") type("image/jpeg"))}
  .pb-senio{background-image:linear-gradient(20deg,rgba(15,30,48,.3),rgba(15,30,48,0)),url("../photos/_moyens-de-major.jpg")}
  .pb-senio{background-image:linear-gradient(20deg,rgba(15,30,48,.3),rgba(15,30,48,0)),image-set(url("../photos/_moyens-de-major.webp") type("image/webp"),url("../photos/_moyens-de-major.jpg") type("image/jpeg"))}
  .clients-strip{max-width:960px;margin:12px auto 0;color:var(--gris);font-weight:600;font-size:1rem;line-height:2;text-align:center}
  /* Mur de logos clients */
  .clients-logos{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:20px 34px;max-width:980px;margin:30px auto 0}
  .clients-logos .cl{height:64px;display:flex;align-items:center;justify-content:center}
  .clients-logos .cl img{max-height:56px;max-width:150px;width:auto;object-fit:contain;
    filter:grayscale(100%);opacity:.72;transition:filter .25s ease,opacity .25s ease}
  .clients-logos .cl:hover img{filter:grayscale(0);opacity:1}
  .clients-logos .cl .nom{display:inline-block;padding:10px 16px;border:1px solid #e2ddd4;border-radius:8px;
    color:var(--bleu-2);font-weight:700;font-size:.95rem;background:#fff}
  .section.dark .clients-logos .cl .nom{border-color:rgba(255,255,255,.22);background:transparent;color:#dbe4ee}
  .carriere{background:linear-gradient(100deg,var(--orange),#d9484d);color:#fff;border-radius:var(--radius);padding:50px;display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap}
  .carriere h2{font-size:1.8rem;margin-bottom:10px}
  .carriere p{max-width:520px;font-size:1rem;opacity:.95}
  .btn-blanc{background:#fff;color:var(--orange-2)}
  .btn-blanc:hover{background:#f4e9df}
  .steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:42px}
  .step{background:#fff;border:1px solid #e6e2da;border-radius:var(--radius);padding:26px}
  .step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;margin-bottom:14px}
  .step b{display:block;margin-bottom:6px}
  .step span{color:var(--gris);font-size:.9rem}
  .jobs{display:grid;gap:16px;margin-top:42px}
  .job{display:flex;justify-content:space-between;align-items:center;gap:18px;background:#fff;border:1px solid #e6e2da;border-radius:var(--radius);padding:22px 26px;flex-wrap:wrap}
  .job b{font-size:1.05rem}
  .job .meta{color:var(--gris);font-size:.88rem}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:42px}
  .coord{display:grid;gap:22px}
  .coord .item{display:flex;gap:16px;align-items:flex-start}
  .coord .pic{flex:0 0 46px;height:46px;border-radius:10px;background:var(--creme);display:grid;place-items:center;font-size:1.2rem}
  .coord b{display:block}
  .coord span{color:var(--gris);font-size:.95rem}
  form{display:grid;gap:16px}
  .frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  input,select,textarea{width:100%;padding:14px;border:1px solid #d9d4ca;border-radius:8px;font:inherit;background:#fff}
  input:focus,select:focus,textarea:focus{outline:2px solid var(--orange);border-color:transparent}
  label{font-size:.85rem;font-weight:700;margin-bottom:6px;display:block}
  .map{height:340px;border-radius:var(--radius);overflow:hidden;background:#dce4ec;margin-top:42px}
  .map iframe{width:100%;height:100%;border:0;display:block}

  footer{background:var(--bleu);color:#9fb2c5;padding:56px 0 28px;font-size:.9rem}
  .fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
  footer h4{color:#fff;font-size:.95rem;margin-bottom:16px}
  footer ul{list-style:none;display:grid;gap:10px}
  footer a:hover{color:#fff}
  .fbottom{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem}

  @media(max-width:920px){
    .burger{display:flex}
    nav ul{position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;
      background:#fff;border-top:1px solid #e9e4dc;box-shadow:0 22px 34px rgba(15,30,48,.14);
      padding:6px 0;display:none;z-index:60}
    nav ul.open{display:flex}
    nav ul li{width:100%}
    nav ul li a{display:block;padding:16px 24px;border-bottom:1px solid #f1ede6;opacity:1}
    nav ul li:last-child a{border-bottom:0}
    nav a::after{display:none}
    .stats .wrap,.steps{grid-template-columns:repeat(2,1fr)}
    .grid3,.refs,.grid2{grid-template-columns:1fr}
    .split,.contact-grid{grid-template-columns:1fr}
    .clients{grid-template-columns:repeat(2,1fr)}
    .fgrid{grid-template-columns:1fr 1fr}
    .frow{grid-template-columns:1fr}
  }


  .badge-photo,.photo-block span,.ref .ph span{display:none!important}