:root{
  --ink:#2A3B35; --ink-soft:#4E5E57; --leaf:#458620; --leaf-light:#6BA539;
  --tan:#A89074; --paper:#F4F2EC; --card:#FBFAF6; --line:#DCD8CC;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --radius:14px; --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--leaf)}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.12;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,5.2vw,4rem)}
h2{font-size:clamp(1.8rem,3.4vw,2.6rem)}
h3{font-size:1.25rem}
p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--leaf)}
.lead{font-size:1.15rem;color:var(--ink-soft);max-width:60ch}
section{padding:96px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{margin:.35em 0 .4em}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,242,236,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.scrolled{border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.nav .logo img{height:44px;width:auto}
.nav ul{display:flex;gap:24px;list-style:none;margin:0;padding:0}
.nav ul a{color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:500}
.nav ul a:hover{color:var(--leaf)}
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.85em 1.4em;border-radius:999px;font-weight:700;font-size:.95rem;text-decoration:none;transition:transform .15s,background .15s,box-shadow .15s;border:2px solid transparent;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--leaf);color:#fff}
.btn-primary:hover{background:#3A731A;box-shadow:0 6px 18px rgba(69,134,32,.25)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.nav .btn{padding:.6em 1.15em}
.menu-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{padding:56px 0 80px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{margin:.3em 0 .45em}
.hero .lead{margin-bottom:32px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px}
.hero-media{position:relative}
.hero-media img{border-radius:22px;aspect-ratio:4/4.3;object-fit:cover;width:100%;box-shadow:0 30px 60px -30px rgba(42,59,53,.45)}
.hero-badge{position:absolute;left:-22px;bottom:28px;background:var(--card);border-radius:12px;padding:14px 18px;box-shadow:0 12px 30px -12px rgba(42,59,53,.35);font-size:.88rem;line-height:1.35;max-width:240px}
.hero-badge strong{display:block;font-family:var(--serif);font-size:1.05rem}

/* Figures */
.figures{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding-top:8px}
.figure{border-top:3px solid var(--leaf-light);padding-top:16px}
.figure b{display:block;font-family:var(--serif);font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:600;line-height:1.1}
.figure span{display:block;margin-top:6px;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 28px}
.card .eyebrow{font-size:.72rem}
.card blockquote{margin:.7em 0 .55em;font-weight:700;font-size:1.04rem;line-height:1.35}
.card p{color:var(--ink-soft);font-size:.96rem}

/* Configurations */
.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.configs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.config{background:var(--paper);border-radius:var(--radius);padding:30px;border:1px solid var(--line)}
.config .num{font-family:var(--serif);font-size:2.6rem;color:var(--leaf);line-height:1}
.config h3{margin:.5em 0 .4em}
.config p{color:var(--ink-soft);font-size:.97rem}
.note{margin-top:22px;color:var(--ink-soft);font-size:.95rem}

/* Split */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center}
.split.reverse{grid-template-columns:1.1fr .9fr}
.split.reverse .split-media{order:2}
.split-media img{border-radius:20px;width:100%;object-fit:cover}
.split h2{margin:.35em 0 .5em}
.points{list-style:none;padding:0;margin:28px 0 0;display:grid;gap:18px}
.points li{padding-left:30px;position:relative;color:var(--ink-soft)}
.points li::before{content:"";position:absolute;left:0;top:.45em;width:14px;height:14px;border-radius:50%;background:var(--leaf-light);box-shadow:0 0 0 4px rgba(107,165,57,.18)}
.points strong{color:var(--ink)}
.small{font-size:.85rem;color:var(--ink-soft);margin-top:18px}

/* Diagram */
.flow{margin:30px 0 0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.flow svg{width:100%;height:auto}

/* Demonstrator gallery */
.gallery{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:260px 260px;gap:14px;margin-top:44px}
.gallery img{width:100%;height:260px;min-height:0;object-fit:cover;border-radius:16px}
.gallery .g1{height:534px}
.gallery .g1{grid-row:1/3}
.gallery .g4{grid-column:2/4}
.demo-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.demo-facts div{border-left:3px solid var(--leaf-light);padding-left:16px}
.demo-facts b{display:block;font-family:var(--serif);font-size:1.3rem}
.demo-facts span{color:var(--ink-soft);font-size:.95rem}

/* Trust */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.trust div{border-top:2px solid var(--leaf-light);padding-top:16px}
.trust h3{font-family:var(--sans);font-size:1rem;font-weight:700;margin-bottom:6px}
.trust p{color:var(--ink-soft);font-size:.95rem}
.band{margin:56px 0 0;border-radius:20px;overflow:hidden;position:relative}
.band img{width:100%;height:340px;object-fit:cover}
.band figcaption{position:absolute;left:20px;bottom:18px;background:rgba(251,250,246,.94);padding:10px 14px;border-radius:10px;font-size:.88rem}

/* Contact */
.contact{background:var(--ink);color:#EEF1EC;padding:88px 0}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.contact h2{color:#fff;margin:.35em 0 .45em}
.contact .eyebrow{color:#9BCB72}
.contact p{color:#C9D3CC}
.contact .hero-ctas{margin-top:30px}
.contact .btn-ghost{border-color:#fff;color:#fff}
.contact .btn-ghost:hover{background:#fff;color:var(--ink)}
.status{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:.88rem;color:#C9D3CC}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:#9BCB72;box-shadow:0 0 0 4px rgba(155,203,114,.2)}
.vcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:30px}
.vcard img{height:46px;width:auto;margin-bottom:22px}
.vcard b{display:block;font-size:1.15rem;color:#fff}
.vcard .role{color:#9BCB72;font-size:.93rem;margin-bottom:16px}
.vcard a{display:block;color:#fff;text-decoration:none;padding:5px 0;font-size:.98rem}
.vcard a:hover{color:#9BCB72}
.vcard .loc{color:var(--tan);font-size:.88rem;margin-top:12px;letter-spacing:.03em}

/* Footer */
footer{background:#22302B;color:#9FAEA6;font-size:.85rem;padding:26px 0}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:#C9D3CC;text-decoration:none}
footer a:hover{color:#fff}

/* Reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* Legal page */
.legal{padding:64px 0 96px}
.legal .wrap{max-width:820px}
.legal h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:28px}
.legal h2{font-size:1.4rem;margin:36px 0 10px}
.legal p,.legal li{color:var(--ink-soft)}
.legal p+p{margin-top:10px}

/* Responsive */
@media (max-width:980px){
  .hero-grid,.split,.split.reverse,.contact-grid{grid-template-columns:1fr;gap:40px}
  .split.reverse .split-media{order:0}
  .cards,.configs{grid-template-columns:1fr 1fr}
  .figures,.trust{grid-template-columns:1fr 1fr}
  .hero-badge{left:16px}
}
@media (max-width:820px){
  .nav ul,.nav .btn{display:none}
  .menu-toggle{display:block}
  .nav.open ul{display:flex;flex-direction:column;position:absolute;top:76px;left:0;right:0;background:var(--paper);padding:18px 24px 26px;gap:18px;border-bottom:1px solid var(--line)}
  .nav.open .btn{display:none}
}
@media (max-width:640px){
  body{font-size:16px}
  section{padding:68px 0}
  .wrap{padding:0 16px}
  .cards,.configs,.demo-facts{grid-template-columns:1fr}
  .figures{grid-template-columns:1fr 1fr;gap:20px}
  .trust{grid-template-columns:1fr;gap:22px}
  .gallery{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .gallery img{height:170px}
  .gallery .g1{height:240px}
  .gallery .g1{grid-column:1/3;grid-row:auto}
  .gallery .g4{grid-column:1/3}
  .band img{height:220px}
  .hero{padding:32px 0 56px}
  .hero-media img{aspect-ratio:4/3.6}
}

/* ===== V2.1 : photos en fond ===== */
.hero-photo{position:relative;padding:0;min-height:calc(100vh - 76px);min-height:calc(100svh - 76px);display:flex;align-items:stretch;color:#fff;
  background:#1E2B26 url("img/fond-accueil.jpg") center 35%/cover no-repeat}
.hero-photo::before{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(24,36,31,.92) 0%,rgba(24,36,31,.78) 38%,rgba(24,36,31,.25) 70%,rgba(24,36,31,.05) 100%),
             linear-gradient(0deg,rgba(24,36,31,.85) 0%,rgba(24,36,31,0) 38%)}
.hero-inner{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:56px;padding-top:96px;padding-bottom:40px;width:100%}
.hero-text{max-width:640px}
.hero-photo .eyebrow{color:#A9D47F}
.hero-photo h1{color:#fff;margin:.3em 0 .45em;text-shadow:0 2px 24px rgba(0,0,0,.25)}
.hero-photo .lead{color:#E3EAE5;margin-bottom:32px}
.btn-ghost-light{border-color:rgba(255,255,255,.85);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--ink)}
.hero-tag{display:flex;align-items:center;gap:10px;margin-top:28px;font-size:.9rem;color:#D3DDD7}
.hero-tag span{width:9px;height:9px;border-radius:50%;background:#A9D47F;box-shadow:0 0 0 5px rgba(169,212,127,.22);flex:none}
.figures-glass .figure{border-top-color:#A9D47F}
.figures-glass .figure b{color:#fff}
.figures-glass .figure span{color:#C9D5CE}

.photo-band{position:relative;padding:150px 0;color:#fff;text-align:center;
  background:#2A3B35 url("img/fond-bandeau.jpg") center 40%/cover no-repeat}
.photo-band::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(24,36,31,.72) 0%,rgba(24,36,31,.5) 70%)}
.photo-band .wrap{position:relative}
.band-quote{font-family:var(--serif);font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.12;font-weight:600;text-shadow:0 2px 30px rgba(0,0,0,.35)}
.band-quote em{display:block;margin-top:18px;font-family:var(--sans);font-style:normal;font-weight:500;font-size:clamp(1.05rem,1.8vw,1.35rem);color:#E3EAE5}

.contact-photo{position:relative;background:#1E2B26 url("img/fond-contact.jpg") center/cover no-repeat}
.contact-photo::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(30,43,38,.95) 0%,rgba(30,43,38,.86) 55%,rgba(30,43,38,.7) 100%)}
.contact-photo .wrap{position:relative}
.contact-photo .vcard{background:rgba(20,30,26,.55);backdrop-filter:blur(6px)}

@media (hover:none),(max-width:980px){.photo-band{background-attachment:scroll}}
@media (max-width:640px){
  .hero-photo{min-height:auto;background-position:60% center}
  .hero-photo::before{background:linear-gradient(180deg,rgba(24,36,31,.78) 0%,rgba(24,36,31,.88) 100%)}
  .hero-inner{padding-top:56px;gap:44px}
  .photo-band{padding:96px 0}
}

/* ===== Page événements ===== */
.nav ul a[aria-current="page"]{color:var(--leaf)}
.event-hero{padding:72px 0 24px}
.event-hero h1{margin:.3em 0 .4em}
.event{padding:72px 0}
.event-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.event-grid.reverse{grid-template-columns:.8fr 1.2fr}
.event-grid.reverse .event-media{order:2}
.event-media{margin:0}
.event-media img{width:100%;border-radius:20px;object-fit:cover;aspect-ratio:16/10;box-shadow:0 30px 60px -32px rgba(42,59,53,.5)}
.event-media.portrait img{aspect-ratio:4/5;max-height:640px}
.event-date{font-size:.9rem;color:var(--ink-soft);margin-bottom:10px}
.event-date span{display:inline-block;background:var(--leaf);color:#fff;font-weight:700;border-radius:999px;padding:.25em .8em;margin-right:4px}
.event-body h2{margin:.1em 0 .5em}
.event-body p+p{margin-top:12px}
.event-body p{color:var(--ink-soft)}
.event-tags{list-style:none;padding:0;margin:22px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.event-tags li{font-size:.82rem;font-weight:500;border:1px solid var(--line);background:var(--card);border-radius:999px;padding:.3em .85em;color:var(--ink)}
.event-next{padding:72px 0 96px}
.next-card{display:flex;align-items:center;justify-content:space-between;gap:32px;background:var(--card);border:1px solid var(--line);border-left:5px solid var(--leaf-light);border-radius:18px;padding:36px 40px}
.next-card h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin:.3em 0 .35em}
.next-card p{color:var(--ink-soft)}
.next-card .btn{flex:none}
@media (max-width:980px){
  .event-grid,.event-grid.reverse{grid-template-columns:1fr;gap:32px}
  .event-grid.reverse .event-media{order:0}
  .next-card{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){.event{padding:52px 0}.next-card{padding:26px 22px}.event-hero{padding:48px 0 8px}}