/* Go Ahead S.A. — feuille de style principale */
:root{
  --bg:#faf8f5; --surface:#ffffff; --ink:#1d1b1a; --muted:#5f5a55; --line:#e7e2db;
  --dark:#141212; --dark-2:#1f1c1b; --on-dark:#f3efe9; --on-dark-muted:#b9b1a7;
  --red:#e2412f; --amber:#f2a33a; --blue:#3b5bdb; --violet:#b23ad1;
  --accent:#c2412f; --accent-ink:#fff;
  --grad:linear-gradient(90deg,#e2412f 0%,#f2a33a 35%,#b23ad1 70%,#3b5bdb 100%);
  --radius:14px; --max:1160px; --shadow:0 10px 30px rgba(20,18,18,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;margin:0 0 .6em}
h1{font-size:clamp(2rem,4.5vw,3.3rem);font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700}
h3{font-size:1.2rem;font-weight:650}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--violet);outline-offset:2px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,248,245,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand img{height:56px;width:auto}
.nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0}
.nav a{display:block;padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:.95rem;font-weight:500}
.nav a:hover,.nav a[aria-current="page"]{background:#efe9e1}
.nav .cta{background:var(--dark);color:#fff}
.nav .cta:hover{background:#000}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:inherit;cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav{position:absolute;top:68px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);display:none}
  .nav.open{display:block}
  .nav ul{flex-direction:column;padding:10px 16px 16px}
}

/* Buttons */
.btn{display:inline-block;padding:13px 22px;border-radius:999px;font-weight:600;text-decoration:none;border:2px solid transparent;transition:transform .15s ease,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:#a8361f}
.btn-ghost{border-color:currentColor;color:inherit}
.btn-light{background:#fff;color:var(--ink)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* Hero */
.hero{background:var(--dark);color:var(--on-dark);overflow:hidden;position:relative}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--grad)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-top:64px;padding-bottom:64px}
.hero .eyebrow{color:var(--amber)}
.hero p.lead{color:var(--on-dark-muted);font-size:1.15rem;max-width:36em}
.hero img{border-radius:var(--radius);box-shadow:0 30px 80px rgba(0,0,0,.5);max-height:620px;object-fit:cover;width:100%}
.price-tag{display:inline-flex;gap:10px;align-items:baseline;margin-top:18px;color:var(--on-dark)}
.price-tag strong{font-size:1.5rem}
.price-tag span{color:var(--on-dark-muted);font-size:.95rem}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-top:40px;padding-bottom:40px}.hero img{max-height:460px}}
.eyebrow{display:block;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:var(--accent);margin-bottom:10px}

/* Page hero (inner pages) */
.page-hero{background:var(--dark);color:var(--on-dark);padding:56px 0 48px;position:relative}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--grad)}
.page-hero p{color:var(--on-dark-muted);max-width:44em;font-size:1.1rem}
.breadcrumb{font-size:.85rem;color:var(--on-dark-muted);margin-bottom:14px}
.breadcrumb a{color:var(--on-dark-muted)}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb li+li::before{content:"›";margin-right:6px}

/* Sections */
section{padding:72px 0}
section.tight{padding:48px 0}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:var(--dark);color:var(--on-dark)}
.dark p{color:var(--on-dark-muted)}
.intro{max-width:46em}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.reverse>:first-child{order:2}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:28px}.split.reverse>:first-child{order:0}}
.split img{border-radius:var(--radius);box-shadow:var(--shadow)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.dark .card{background:var(--dark-2);border-color:#2e2a28}
.card h3{margin-bottom:.4em}
.card p:last-child{margin-bottom:0}
.dot{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:8px;vertical-align:middle}
.ticks{list-style:none;padding:0;margin:0 0 1em}
.ticks li{padding-left:28px;position:relative;margin-bottom:8px}
.ticks li::before{content:"";position:absolute;left:4px;top:.55em;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.feature-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px;background:#f4ece4;color:var(--accent);font-weight:700}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery a{display:block;border-radius:10px;overflow:hidden;background:#eee;aspect-ratio:3/4}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.gallery a:hover img{transform:scale(1.04)}
@media (max-width:760px){.gallery{grid-template-columns:repeat(2,1fr)}}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.lightbox.open{display:flex}
.lightbox img{max-height:90vh;max-width:92vw;border-radius:8px}
.lightbox button{position:absolute;top:16px;right:16px;background:#fff;border:0;border-radius:50%;width:44px;height:44px;font-size:22px;cursor:pointer}

/* Tables */
.specs{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.specs th,.specs td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.specs th{width:42%;font-weight:600;background:#fbf9f6}
.specs tr:last-child th,.specs tr:last-child td{border-bottom:0}
.specs small{color:var(--muted);font-weight:400}

/* Price box */
.pricebox{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.pricebox .amount{font-size:2.4rem;font-weight:800;line-height:1}
.pricebox .sub{color:var(--muted)}
.pricebox hr{border:0;border-top:1px solid var(--line);margin:18px 0}

/* Video (click to load) */
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#000;box-shadow:var(--shadow)}
.video button{all:unset;cursor:pointer;position:absolute;inset:0;display:grid;place-items:center}
.video img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85}
.video .play{position:relative;width:78px;height:78px;border-radius:50%;background:rgba(255,255,255,.95);display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.video .play::before{content:"";margin-left:6px;border-left:24px solid var(--accent);border-top:15px solid transparent;border-bottom:15px solid transparent}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-note{font-size:.85rem;color:var(--muted);margin-top:8px}

/* Notice / disclaimer */
.notice{border-left:4px solid var(--amber);background:#fff8ec;padding:16px 20px;border-radius:0 10px 10px 0;font-size:.95rem}
.notice strong{display:block;margin-bottom:4px}

/* Programs */
.program{border-top:4px solid var(--c,var(--accent))}
.program .meta{font-size:.9rem;color:var(--muted);margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}

/* Forms */
form .field{margin-bottom:16px}
label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid #d4ccc2;border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:140px;resize:vertical}
.hp{position:absolute;left:-5000px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:620px){.form-row{grid-template-columns:1fr}}
.small{font-size:.88rem;color:var(--muted)}
.form-msg{padding:14px 18px;border-radius:10px;margin-bottom:16px;display:none}
.form-msg.ok{display:block;background:#e9f7ee;color:#1e6b3a}
.form-msg.err{display:block;background:#fdecea;color:#8a1f12}

/* Contact block */
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{margin-bottom:12px}
.contact-list strong{display:block;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.map{border:0;width:100%;height:320px;border-radius:var(--radius)}

/* Sources list */
.sources li{margin-bottom:8px}

/* Footer */
.site-footer{background:var(--dark);color:var(--on-dark-muted);padding:56px 0 28px;font-size:.95rem;position:relative}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad)}
.site-footer a{color:var(--on-dark)}
.site-footer h3{color:#fff;font-size:1rem;text-transform:uppercase;letter-spacing:.1em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:6px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-bottom{border-top:1px solid #2e2a28;margin-top:36px;padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:.85rem}
.center{text-align:center}
.mt0{margin-top:0}
.mb0{margin-bottom:0}

/* ===== Héros 3D (présentation produit) ===== */
.hero3d{--glow:226,65,47;position:relative;overflow:hidden;min-height:min(820px,100vh);
  background:radial-gradient(60% 70% at 55% 45%,rgba(var(--glow),.16),transparent 70%),linear-gradient(180deg,#f4f2ef 0%,#e9e6e2 100%);
  transition:background .8s ease}
.hero3d .bigword{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);font-size:clamp(5rem,21vw,19rem);font-weight:800;letter-spacing:.06em;
  color:transparent;-webkit-text-stroke:2px rgba(29,27,26,.06);white-space:nowrap;pointer-events:none;user-select:none;line-height:1}
.hero3d .wrap{position:relative;display:grid;grid-template-columns:1fr 1.15fr .6fr;gap:24px;align-items:center;min-height:min(820px,100vh);padding-top:40px;padding-bottom:40px}
.hero3d h1{font-size:clamp(2rem,3.2vw,2.8rem);margin-bottom:.3em}
.hero3d .sub{color:var(--muted);font-size:1rem;margin-bottom:1em}
.feat{list-style:none;padding:0;margin:0 0 22px}
.feat li{display:flex;align-items:center;gap:10px;margin-bottom:6px;font-size:.95rem}
.feat svg{width:20px;height:20px;flex:none;color:rgb(var(--glow));transition:color .6s}
.swatches{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.swatch{width:26px;height:26px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.15);cursor:pointer;padding:0;transition:transform .15s}
.swatch[aria-pressed="true"]{box-shadow:0 0 0 2px var(--ink);transform:scale(1.12)}
.prog-name{font-size:.88rem;color:var(--muted);min-height:1.4em;margin-bottom:14px}
.prog-name strong{color:var(--ink)}
.buy{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.buy .price{font-size:1.45rem;font-weight:800}
.buy .price small{display:block;font-size:.78rem;font-weight:500;color:var(--muted)}
.btn-pill{display:inline-flex;align-items:center;gap:10px;background:#2f6fe4;color:#fff;border-radius:999px;padding:12px 24px;font-weight:600;text-decoration:none;box-shadow:0 8px 20px rgba(47,111,228,.3)}
.btn-pill:hover{background:#2559bd}
.stage{position:relative;aspect-ratio:1/1;width:100%;max-width:640px;margin:0 auto}
.stage::before{content:"";position:absolute;inset:6%;border-radius:50%;border:1px solid rgba(29,27,26,.09);background:radial-gradient(circle,rgba(255,255,255,.55),rgba(255,255,255,0) 70%)}
.stage .viewer{position:absolute;inset:0;cursor:grab}
.stage .viewer:active{cursor:grabbing}
.stage .viewer canvas{display:block;touch-action:pan-y}
.stage .fallback{position:absolute;inset:12%;width:76%;height:76%;object-fit:cover;border-radius:50%}
.stage .viewer.is-3d+.fallback,.stage .viewer.is-3d~.fallback{display:none}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:0;background:#fff;box-shadow:0 6px 16px rgba(0,0,0,.12);cursor:pointer;font-size:20px;color:var(--ink);z-index:2}
.arrow.prev{left:0}.arrow.next{right:0}
.hint{position:absolute;bottom:4%;left:50%;transform:translateX(-50%);font-size:.8rem;color:var(--muted);background:rgba(255,255,255,.7);padding:4px 12px;border-radius:999px;white-space:nowrap}
.stats{align-self:end;display:flex;flex-direction:column;gap:22px;padding-bottom:60px}
.stat b{display:block;font-size:2.6rem;font-weight:500;line-height:1;color:rgb(var(--glow));transition:color .6s}
.stat span{font-size:.95rem}
@media (max-width:1000px){
  .hero3d .wrap{grid-template-columns:1fr;min-height:0}
  .hero3d .stage{order:-1;max-width:520px}
  .stats{flex-direction:row;justify-content:space-between;padding-bottom:0;align-self:auto}
  .hero3d .bigword{top:22%}
}
/* pages internes plus lumineuses */
.page-hero{background:radial-gradient(60% 120% at 80% 0%,rgba(226,65,47,.12),transparent 70%),linear-gradient(180deg,#f4f2ef,#ebe7e2);color:var(--ink)}
.page-hero p,.page-hero .breadcrumb,.page-hero .breadcrumb a{color:var(--muted)}
.page-hero .eyebrow{color:var(--accent)!important}

/* ===== Héros 3D v2 : produit au centre, plein écran ===== */
.hero3d{min-height:calc(100vh - 68px);min-height:calc(100svh - 68px)}
.hero3d .bigword{top:50%;z-index:0;-webkit-text-stroke:2px rgba(29,27,26,.07);font-size:clamp(6rem,24vw,24rem)}
.hero3d .stage{position:absolute;inset:0;max-width:none;width:auto;aspect-ratio:auto;margin:0;z-index:1}
.hero3d .stage::before{inset:auto;left:50%;top:50%;width:min(84vh,64vw);height:min(84vh,64vw);transform:translate(-50%,-50%);
  border:1px solid rgba(29,27,26,.10);background:radial-gradient(circle,rgba(255,255,255,.75) 0%,rgba(255,255,255,.25) 55%,rgba(255,255,255,0) 72%)}
.hero3d .stage .fallback{inset:auto;left:50%;top:50%;transform:translate(-50%,-50%);width:min(60vh,44vw);height:auto;border-radius:16px}
.hero3d .arrow.prev{left:calc(50% - min(42vh,32vw) - 22px)}
.hero3d .arrow.next{right:calc(50% - min(42vh,32vw) - 22px)}
.hero3d .hint{bottom:18px}
.hero3d .wrap{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;min-height:calc(100vh - 68px);min-height:calc(100svh - 68px);pointer-events:none;padding-top:24px;padding-bottom:24px}
.hero3d .wrap>*{pointer-events:auto}
.hero3d .copy{max-width:340px}
.hero3d h1{font-size:clamp(2rem,3vw,2.7rem)}
.hero3d .stats{align-self:flex-end;padding-bottom:70px;text-align:right}
@media (max-width:1000px){
  .hero3d{min-height:0}
  .hero3d .stage{position:relative;height:68vh;min-height:420px}
  .hero3d .stage::before{width:min(62vh,92vw);height:min(62vh,92vw)}
  .hero3d .arrow.prev{left:8px}.hero3d .arrow.next{right:8px}
  .hero3d .bigword{top:34vh}
  .hero3d .wrap{display:block;min-height:0;padding-top:8px}
  .hero3d .copy{max-width:none}
  .hero3d .stats{flex-direction:row;justify-content:space-between;text-align:left;padding:24px 0 0}
}
/* v3 : texte compact, flèches en bas, lampe entière visible */
.hero3d h1{font-size:clamp(2.6rem,4.4vw,3.8rem);line-height:1.05}
.hero3d .h1sub{display:block;font-size:.45em;font-weight:500;color:var(--muted);margin-top:.35em;letter-spacing:0}
.hero3d .copy .eyebrow{margin-bottom:6px}
.hero3d .sub{margin-bottom:.8em}
.hero3d .feat{margin-bottom:14px}
.hero3d .feat li{margin-bottom:4px;font-size:.92rem}
.hero3d .prog-name{margin-bottom:12px}
.demo-link{margin:12px 0 0;font-size:.92rem}
.demo-link a{color:var(--ink);font-weight:600}
.hero3d .arrow{top:auto;bottom:14px;transform:none}
.hero3d .arrow.prev{left:calc(50% - 190px)}
.hero3d .arrow.next{right:calc(50% - 190px)}
.hero3d .hint{bottom:24px}
.hero3d .stage::before{top:47%}
@media (max-width:1000px){.hero3d .arrow.prev{left:calc(50% - 175px)}.hero3d .arrow.next{right:calc(50% - 175px)}}
.hero3d{padding:0}