:root{
  --navy:#0E2746;--navy-2:#16355c;--orange:#F2A322;--orange-d:#E08A12;
  --ink:#14202e;--muted:#5a6778;--bg:#ffffff;--bg-2:#f4f6f9;--line:#e3e8ef;
  --radius:10px;--max:1160px;
  --font:"Helvetica Neue",Arial,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
img,video{max-width:100%;display:block}
a{color:var(--navy)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.15;color:var(--navy);margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(1.7rem,3.2vw,2.4rem)}
h2::after{content:"";display:block;width:64px;height:5px;background:var(--orange);margin-top:14px}
.center{text-align:center}.center h2::after{margin-left:auto;margin-right:auto}
.lead{color:var(--muted);max-width:680px}
.center .lead{margin:0 auto}
section{padding:80px 0}

/* header */
.top{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:74px;gap:16px}
.logo img{height:46px;width:auto}
.nav{display:flex;gap:26px;align-items:center}
.nav a{text-decoration:none;font-weight:600;color:var(--navy);font-size:.95rem}
.nav a:hover{color:var(--orange-d)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--orange);color:var(--navy);font-weight:800;text-decoration:none;padding:13px 22px;border-radius:var(--radius);border:0;cursor:pointer;font-size:1rem;font-family:inherit;transition:background .15s}
.btn:hover{background:var(--orange-d)}
.btn.ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}
.btn.ghost:hover{background:rgba(255,255,255,.1)}
.nav .btn{padding:10px 16px;color:var(--navy)}
.burger{display:none;background:none;border:0;font-size:1.8rem;color:var(--navy);cursor:pointer}

/* hero */
.hero{position:relative;color:#fff;padding:0;min-height:600px;display:flex;align-items:center;
  background:linear-gradient(100deg,rgba(14,39,70,.95) 0%,rgba(14,39,70,.82) 45%,rgba(14,39,70,.35) 100%),url(img/eclairage-led-lineaire-verriere.jpg) center/cover}
.hero .wrap{padding-top:90px;padding-bottom:90px}
.hero h1{color:#fff;font-size:clamp(2.1rem,5vw,3.6rem);max-width:760px}
.hero h1 span{color:var(--orange)}
.hero p{font-size:1.2rem;max-width:600px;color:#dfe6f0}
.hero .ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.badges{display:flex;gap:26px;flex-wrap:wrap;margin-top:40px;font-weight:700;font-size:.98rem}
.badges div{display:flex;align-items:center;gap:10px}
.badges svg{flex:none}

/* services */
.grid{display:grid;gap:22px}
.services{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));margin-top:40px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .15s,box-shadow .15s;border-top:4px solid var(--orange)}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(14,39,70,.08)}
.card h3{font-size:1.15rem;margin-bottom:.4em}
.card p{margin:0;color:var(--muted);font-size:.97rem}
.ico{width:46px;height:46px;border-radius:10px;background:var(--navy);display:grid;place-items:center;margin-bottom:16px}

/* clients */
.alt{background:var(--bg-2)}
.clients{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:40px}
.client{background:#fff;border-radius:var(--radius);padding:24px;border-left:5px solid var(--navy)}
.client h3{font-size:1.1rem}
.client p{margin:0;color:var(--muted);font-size:.96rem}

/* why */
.why{background:var(--navy);color:#fff}
.why h2{color:#fff}
.why .grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:40px}
.stat{border-top:3px solid var(--orange);padding-top:18px}
.stat strong{display:block;font-size:2.1rem;color:var(--orange);line-height:1.1}
.stat span{color:#cfd9e6}

/* gallery */
.gallery{columns:3 280px;column-gap:16px;margin-top:40px}
.gallery figure{margin:0 0 16px;break-inside:avoid;position:relative;border-radius:var(--radius);overflow:hidden;background:#dde3ea}
.gallery img{width:100%;height:auto;transition:transform .3s}
.gallery figure:hover img{transform:scale(1.03)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;color:#fff;font-weight:700;font-size:.92rem;background:linear-gradient(transparent,rgba(14,39,70,.88))}
.video-block{display:grid;grid-template-columns:1.3fr 1fr;gap:36px;align-items:center;margin-top:56px}
.video-block video{border-radius:var(--radius);width:100%;background:#000}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:44px;margin-top:40px}
.info-list{list-style:none;padding:0;margin:0}
.info-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-list b{display:block;color:var(--navy)}
.big-tel{font-size:1.7rem;font-weight:800;color:var(--navy);text-decoration:none}
form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:block;font-weight:700;font-size:.9rem;margin:12px 0 6px;color:var(--navy)}
input,select,textarea{width:100%;padding:12px;border:1px solid #cbd3de;border-radius:8px;font:inherit;font-size:1rem;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--orange);border-color:var(--orange)}
textarea{min-height:130px;resize:vertical}
.small{font-size:.82rem;color:var(--muted)}
form .btn{margin-top:18px;width:100%;justify-content:center}

/* footer */
footer{background:#0a1d35;color:#aebbcc;padding:44px 0 30px;font-size:.93rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
footer a{color:#fff}
footer strong{color:#fff}

/* mobile call button */
.fab{display:none;position:fixed;right:16px;bottom:16px;z-index:60;background:var(--orange);color:var(--navy);font-weight:800;text-decoration:none;padding:14px 20px;border-radius:40px;box-shadow:0 6px 20px rgba(0,0,0,.25)}

/* legal page */
.legal{padding:60px 0}
.legal h2{font-size:1.4rem;margin-top:1.6em}
.legal h2::after{height:3px;width:40px;margin-top:8px}
.todo{background:#fff4dc;border:1px dashed var(--orange-d);padding:1px 6px;border-radius:4px}

@media (max-width:900px){
  .nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;border-bottom:1px solid var(--line);gap:18px}
  .nav.open{display:flex}
  .burger{display:block}
  .contact-grid,.video-block{grid-template-columns:1fr}
  .fab{display:block}
  section{padding:60px 0}
}
@media (max-width:560px){
  .row{grid-template-columns:1fr}
  .hero{min-height:auto}
  .hero .wrap{padding-top:60px;padding-bottom:60px}
  .logo img{height:38px}
  body{font-size:16px}
}
@media (min-width:901px){.services{grid-template-columns:repeat(3,1fr)}}
.video-block video{max-height:560px;object-fit:contain}