:root{
  --bg:#0f1214;--panel:#171b1f;--text:#f5f5f2;--muted:#b8c0c7;
  --copper:#c9783e;--green:#78b82a;--line:#2b3238;--white:#fff;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#fff;color:#202428;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),92%);margin:auto}
.topbar{background:#0c0f11;color:#fff;font-size:.9rem}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;flex-wrap:wrap}
header{position:sticky;top:0;z-index:50;background:rgba(15,18,20,.96);backdrop-filter:blur(8px);border-bottom:1px solid #262c31}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:2rem}
.brand{font-weight:900;color:#fff;letter-spacing:.04em;line-height:1}
.brand span{display:block;color:var(--copper);font-size:.92rem;margin-top:.4rem}
nav ul{display:flex;gap:1.25rem;list-style:none;padding:0;margin:0;align-items:center}
nav a{color:#fff;font-weight:700;font-size:.94rem}
nav a:hover{color:var(--copper)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.9rem 1.2rem;border-radius:.35rem;font-weight:800;border:2px solid transparent;transition:.2s}
.btn-primary{background:var(--green);color:#071006}
.btn-primary:hover{filter:brightness(1.08)}
.btn-outline{border-color:#fff;color:#fff}
.btn-copper{background:var(--copper);color:#fff}
.hero{min-height:72vh;color:#fff;display:grid;place-items:center;background:
linear-gradient(90deg,rgba(6,8,10,.9),rgba(6,8,10,.45)),
url('../images/double-velux-cuivre.jpg') center/cover no-repeat}
.hero .content{padding:6rem 0;max-width:760px}
.eyebrow{color:var(--copper);font-weight:900;text-transform:uppercase;letter-spacing:.12em}
h1{font-size:clamp(2.3rem,5vw,4.7rem);line-height:1.05;margin:.6rem 0 1rem}
h2{font-size:clamp(1.7rem,3vw,2.8rem);line-height:1.15;margin:0 0 1rem}
h3{line-height:1.25}
.lead{font-size:1.18rem;color:#e3e7e9;max-width:670px}
.actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.7rem}
.section{padding:5rem 0}
.section-dark{background:var(--bg);color:#fff}
.section-soft{background:#f4f5f3}
.grid{display:grid;gap:1.4rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid #e1e5e7;border-radius:.55rem;overflow:hidden;box-shadow:0 12px 30px rgba(0,0,0,.06)}
.card-body{padding:1.35rem}
.card img{aspect-ratio:4/3;object-fit:cover}
.section-dark .card{background:var(--panel);border-color:var(--line)}
.section-dark .card p{color:var(--muted)}
.kicker{font-weight:900;color:var(--copper);text-transform:uppercase;font-size:.82rem;letter-spacing:.1em}
.badges{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:-2.2rem;position:relative;z-index:2}
.badge{background:#fff;padding:1.2rem;border-radius:.5rem;box-shadow:0 12px 30px rgba(0,0,0,.14);font-weight:800;text-align:center}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.list-check{padding:0;list-style:none}
.list-check li{padding:.45rem 0 .45rem 1.7rem;position:relative}
.list-check li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}
.gallery img{width:100%;height:290px;object-fit:cover;border-radius:.45rem}
.cta{background:linear-gradient(135deg,#1a1f22,#0c0f11);color:#fff;padding:3.3rem;border-radius:.75rem;display:flex;justify-content:space-between;gap:2rem;align-items:center}
.faq details{border-bottom:1px solid #d8dddf;padding:1rem 0}
.faq summary{font-weight:800;cursor:pointer}
.form{display:grid;gap:1rem}
.form input,.form textarea,.form select{width:100%;padding:1rem;border:1px solid #cfd5d8;border-radius:.35rem;font:inherit}
.form textarea{min-height:150px}
footer{background:#0c0f11;color:#dce2e5;padding:3.5rem 0 1.2rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem}
footer a:hover{color:var(--copper)}
.small{font-size:.88rem;color:#7b858c}
.mobile-toggle{display:none;color:#fff;font-size:1.6rem;background:none;border:0}
.page-hero{padding:6rem 0 4rem;background:linear-gradient(135deg,#121619,#252c31);color:#fff}
.breadcrumb{color:#b7c0c6;font-size:.9rem}
.article{max-width:850px}
.article h2{margin-top:2.5rem}
.notice{background:#fff5e9;border-left:4px solid var(--copper);padding:1rem 1.2rem}
@media(max-width:900px){
  nav ul{display:none;position:absolute;top:76px;left:0;right:0;background:#101417;padding:1rem 4%;flex-direction:column;align-items:flex-start}
  nav ul.open{display:flex}
  .mobile-toggle{display:block}
  .grid-3,.grid-2,.split,.badges,.footer-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .cta{flex-direction:column;align-items:flex-start}
}
@media(max-width:560px){.gallery{grid-template-columns:1fr}.topbar .container{display:block}.hero{min-height:65vh}}