:root{
  --deep: #0D1B2A;
  --blue: #1B3B6F;
  --blue-light: #2E5B9A;
  --ink: #1B263B;
  --muted: #516278;
  --silk: #F7F9FC;
  --card-bg: #FFFFFF;
  --ice: #EDF2F7;
  --line: #DCE3EC;
  --line-soft: rgba(27, 38, 59, 0.08);
  --gold: #C5A059;
  --gold-soft: rgba(197, 160, 89, 0.15);
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 16px;
  --radius-arch: 44% 44% 24px 24px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:105px}
body{
  margin:0;
  background:var(--silk);
  color:var(--ink);
  font-family:'Source Sans 3',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

button,a{-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--blue-light);
  outline-offset:4px;
}
img{display:block;max-width:100%;height:auto}
p{margin:0 0 22px}
h1,h2,h3,h4{
  font-weight:400;
  line-height:1.15;
  margin:0;
  letter-spacing:-0.035em;
  color:var(--deep);
}
h1{font-size:clamp(44px,5vw,74px)}
h1 span,h2 span{color:var(--blue-light)}
h2{font-size:clamp(32px,3.8vw,54px)}
h3{font-size:25px;letter-spacing:-0.02em}
small,.small{font-size:12px;line-height:1.65;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.wrap{width:min(1240px,calc(100% - 64px));margin-inline:auto}
.section{padding-block:110px}
.lead{font-size:20px;line-height:1.65;color:var(--muted)}
.eyebrow,.section-tag{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.18em;
  font-weight:700;
  color:var(--blue-light);
  margin-bottom:20px;
  display:inline-block;
}

/* TOP BANNER */
.top-notice{
  background:#0D1B2A;
  color:#FFFFFF;
  padding:12px 24px;
  font-size:12px;
  text-align:center;
  letter-spacing:0.02em;
}
.top-notice a{
  color:var(--gold);
  text-decoration:underline;
  margin-left:8px;
  font-weight:600;
}

/* HEADER */
.header{
  height:92px;
  position:sticky;
  top:0;
  z-index:40;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 36px;
  background:rgba(247, 249, 252, 0.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(27, 38, 59, 0.08);
}
.brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand img{height:44px;width:auto;object-fit:contain}
nav{display:flex;align-items:center;gap:24px;font-size:13px;font-weight:600}
nav a{white-space:nowrap;padding:8px 0;position:relative;transition:color .2s}
nav a:hover{color:var(--blue-light)}
nav a.current{color:var(--blue-light)}
nav a.current::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--blue-light)}
nav .outline{
  border:1px solid var(--line-soft);
  border-radius:30px;
  padding:8px 18px;
  background:var(--card-bg);
  box-shadow:0 2px 6px rgba(27,38,59,0.04);
}
nav .outline:hover{border-color:var(--gold)}
.nav-action{
  color:#FFFFFF;
  background:var(--blue);
  padding:9px 20px;
  border-radius:30px;
  transition:background .25s,transform .25s;
}
.nav-action:hover{background:var(--deep);transform:translateY(-2px)}

.menu-toggle{
  display:none;
  padding:10px 16px;
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:24px;
  font-size:13px;
  font-weight:600;
}

/* READING PROGRESS */
.progress{
  position:fixed;
  top:0;
  left:0;
  height:3px;
  background:linear-gradient(90deg,var(--blue-light),var(--gold));
  z-index:100;
  width:0%;
  transition:width .1s;
}

/* HERO SECTION */
.hero{
  padding-top:40px;
  padding-bottom:80px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:64px;
  align-items:center;
}
.hero-content h1{margin-bottom:24px}
.hero-content .lead{margin-bottom:32px;font-size:21px}
.hero-meta{
  display:flex;
  gap:36px;
  margin-top:36px;
  padding-top:32px;
  border-top:1px solid var(--line-soft);
}
.meta-num{
  font-size:32px;
  font-weight:400;
  color:var(--deep);
  line-height:1;
  letter-spacing:-0.03em;
  display:block;
  margin-bottom:6px;
}
.meta-lbl{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.12em;
  color:var(--muted);
  font-weight:600;
}

/* HERO MEDIA & RESIZE BREATHING */
.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(13, 27, 42, 0.12);
  background:var(--deep);
  aspect-ratio:4/3;
}
.hero-img-wrap{
  width:100%;
  height:100%;
  overflow:hidden;
  position:relative;
}
.hero-img-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  animation:hero-breathe 20s ease-in-out infinite alternate;
}
@keyframes hero-breathe{
  0%{transform:scale(1)}
  100%{transform:scale(1.08)}
}

/* OVERLAY RETICULE & GPS */
.hero-reticule{
  position:absolute;
  inset:0;
  pointer-events:none;
  padding:24px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  color:#FFFFFF;
  background:linear-gradient(180deg, rgba(13,27,42,0.4) 0%, transparent 40%, rgba(13,27,42,0.6) 100%);
}
.reticule-top{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:11px;
  letter-spacing:0.15em;
  text-transform:uppercase;
  font-family:monospace;
}
.pulse-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,0.15);
  backdrop-filter:blur(8px);
  padding:6px 14px;
  border-radius:20px;
}
.pulse-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#10B981;
  box-shadow:0 0 10px #10B981;
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:0.4;transform:scale(0.85)}
}
.reticule-bottom{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
}
.gps-coords{
  font-family:monospace;
  font-size:12px;
  color:var(--gold);
}

/* LUXURY MARQUEE TICKER */
.marquee-bar{
  background:#0D1B2A;
  color:#FFFFFF;
  padding:18px 0;
  overflow:hidden;
  white-space:nowrap;
  position:relative;
  display:flex;
}
.marquee-track{
  display:flex;
  gap:48px;
  animation:marquee 28s linear infinite;
}
.marquee-item{
  display:inline-flex;
  align-items:center;
  gap:16px;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:0.2em;
  font-weight:600;
  color:rgba(255,255,255,0.85);
}
.marquee-item span{color:var(--gold)}
@keyframes marquee{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* SECTION 1: BLUEPRINT SIGNATURE INTERACTIVE */
.blueprint-section{
  background:var(--card-bg);
  border-block:1px solid var(--line-soft);
}
.blueprint-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:56px;
  align-items:center;
  margin-top:48px;
}
.blueprint-stage{
  position:relative;
  background:#0D1B2A;
  border-radius:var(--radius-lg);
  padding:32px;
  overflow:hidden;
  box-shadow:0 20px 50px rgba(13,27,42,0.15);
}
.blueprint-stage img{
  width:100%;
  height:auto;
  border-radius:var(--radius-md);
  filter:brightness(0.92) contrast(1.05);
}
.blueprint-svg-overlay{
  position:absolute;
  inset:32px;
  pointer-events:none;
}
.hotspot-layer{
  position:absolute;
  inset:32px;
}
.hotspot{
  position:absolute;
  width:36px;
  height:36px;
  transform:translate(-50%,-50%);
  background:rgba(255,255,255,0.9);
  border:2px solid var(--blue-light);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  font-weight:700;
  color:var(--deep);
  box-shadow:0 4px 16px rgba(0,0,0,0.3);
  cursor:pointer;
  transition:transform .2s,background .2s;
}
.hotspot:hover,.hotspot.active{
  background:var(--gold);
  color:#FFFFFF;
  border-color:#FFFFFF;
  transform:translate(-50%,-50%) scale(1.15);
}
.hotspot-pulse{
  position:absolute;
  inset:-6px;
  border:1px dashed var(--gold);
  border-radius:50%;
  animation:rotate-ring 12s linear infinite;
}
@keyframes rotate-ring{
  0%{transform:rotate(0deg)}
  100%{transform:rotate(360deg)}
}

/* SPEC CARD */
.blueprint-spec-card{
  background:var(--silk);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:36px;
}
.spec-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:20px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line-soft);
}
.spec-badge{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.12em;
  font-weight:700;
  background:var(--ice);
  color:var(--blue-light);
  padding:6px 14px;
  border-radius:20px;
}
.spec-rows{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
  margin-bottom:24px;
}
.spec-item{
  background:var(--card-bg);
  padding:14px 18px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);
}
.spec-label{
  font-size:11px;
  text-transform:uppercase;
  color:var(--muted);
  letter-spacing:0.08em;
  display:block;
  margin-bottom:4px;
}
.spec-val{
  font-size:16px;
  font-weight:700;
  color:var(--deep);
}
.spec-desc{
  font-size:14px;
  line-height:1.65;
  color:var(--muted);
  margin-bottom:0;
}

/* SECTION 2: PRODUCTION FLOW / 3x8 WORKSHOP */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  margin-top:48px;
}
.flow-card{
  background:var(--card-bg);
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid var(--line-soft);
  box-shadow:0 4px 18px rgba(13,27,42,0.03);
  transition:transform .3s,box-shadow .3s;
  display:flex;
  flex-direction:column;
}
.flow-card:hover{
  transform:translateY(-8px);
  box-shadow:0 18px 40px rgba(13,27,42,0.08);
}
.flow-img{
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
}
.flow-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s;
}
.flow-card:hover .flow-img img{
  transform:scale(1.06);
}
.flow-body{
  padding:30px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.flow-tag{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.12em;
  font-weight:700;
  color:var(--blue-light);
  margin-bottom:10px;
  display:block;
}
.flow-body h3{margin-bottom:12px}
.flow-body p{font-size:14px;line-height:1.65;color:var(--muted);margin-bottom:18px}
.flow-badge{
  margin-top:auto;
  font-size:11px;
  font-family:monospace;
  background:var(--ice);
  padding:4px 10px;
  border-radius:6px;
  display:inline-block;
  align-self:flex-start;
  color:var(--deep);
}

/* FULLWIDTH PARALLAX MOMENT */
.parallax-moment{
  position:relative;
  min-height:540px;
  display:flex;
  align-items:center;
  color:#FFFFFF;
  overflow:hidden;
  background:#0D1B2A;
}
.parallax-moment .bg-img{
  position:absolute;
  inset:-15% 0;
  width:100%;
  height:130%;
  object-fit:cover;
  opacity:0.38;
}
.moment-content{
  position:relative;
  z-index:2;
  max-width:760px;
}
.moment-content h2{
  color:#FFFFFF;
  margin-bottom:24px;
}
.moment-content p{
  font-size:19px;
  line-height:1.7;
  color:rgba(255,255,255,0.85);
  margin-bottom:32px;
}

/* SECTION 3: MATERIALS & MORPHING RADAR */
.materials-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-top:48px;
}
.radar-box{
  background:var(--card-bg);
  border-radius:var(--radius-lg);
  padding:36px;
  border:1px solid var(--line-soft);
  text-align:center;
  box-shadow:0 12px 36px rgba(13,27,42,0.04);
}
.radar-svg{
  width:100%;
  max-width:340px;
  height:auto;
  margin:0 auto 24px;
}
#radar-poly{
  transition:all .5s cubic-bezier(0.4, 0, 0.2, 1);
}
.material-buttons{
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}
.material-btn{
  font-size:13px;
  font-weight:600;
  padding:8px 18px;
  border-radius:24px;
  background:var(--silk);
  border:1px solid var(--line);
  color:var(--deep);
  transition:all .2s;
}
.material-btn[aria-pressed="true"],.material-btn:hover{
  background:var(--blue-light);
  color:#FFFFFF;
  border-color:var(--blue-light);
}

/* SECTION 4: SECTORS & APPLICATIONS */
.sectors-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:44px;
}
.sector-card{
  background:var(--card-bg);
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid var(--line-soft);
  transition:transform .3s;
}
.sector-card:hover{
  transform:translateY(-6px);
}
.sector-img{
  aspect-ratio:4/3;
  overflow:hidden;
}
.sector-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s;
}
.sector-card:hover .sector-img img{
  transform:scale(1.08);
}
.sector-body{
  padding:22px;
}
.sector-body h4{
  font-size:18px;
  margin-bottom:8px;
  font-weight:600;
}
.sector-body p{
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
  margin-bottom:0;
}

/* SECTION 5: HISTOIRE / TRANSMISSION */
.timeline{
  position:relative;
  margin-top:56px;
  padding-left:36px;
  border-left:2px solid var(--line);
}
.timeline-item{
  position:relative;
  margin-bottom:44px;
}
.timeline-item::before{
  content:'';
  position:absolute;
  left:-43px;
  top:6px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--gold);
  border:3px solid var(--card-bg);
  box-shadow:0 0 0 2px var(--line);
}
.timeline-year{
  font-size:13px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.12em;
  color:var(--blue-light);
  margin-bottom:6px;
}
.timeline-item h4{
  font-size:20px;
  margin-bottom:8px;
}
.timeline-item p{
  font-size:15px;
  line-height:1.65;
  color:var(--muted);
  margin-bottom:0;
}

/* SECTION 6: COUCHE 3 / OUVERTURE FUTUR */
.opening-block{
  background:#0D1B2A;
  color:#FFFFFF;
  border-radius:var(--radius-lg);
  padding:72px 64px;
  margin-block:60px;
  box-shadow:0 24px 64px rgba(13,27,42,0.18);
  position:relative;
  overflow:hidden;
}
.opening-block::after{
  content:'';
  position:absolute;
  right:-10%;
  top:-20%;
  width:500px;
  height:500px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(197,160,89,0.12) 0%, transparent 70%);
  pointer-events:none;
}
.opening-block h2{
  color:#FFFFFF;
  margin-bottom:28px;
}
.opening-block p{
  font-size:18px;
  line-height:1.75;
  color:rgba(255,255,255,0.88);
  max-width:880px;
  margin-bottom:24px;
}

/* CONDITIONS TEASER BANNER (BANDE SOMBRE OBLIGATOIRE) */
.conditions-teaser{
  background:#14233C;
  color:#FFFFFF;
  border-radius:var(--radius-md);
  padding:48px 56px;
  margin-block:60px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:40px;
}
.teaser-left .eyebrow{
  color:var(--gold);
  margin-bottom:12px;
}
.teaser-left h3{
  color:#FFFFFF;
  font-size:30px;
  margin-bottom:14px;
}
.teaser-left p{
  color:rgba(255,255,255,0.85);
  font-size:15px;
  line-height:1.65;
  max-width:680px;
  margin-bottom:8px;
}
.teaser-btn{
  white-space:nowrap;
  background:var(--gold);
  color:#0D1B2A;
  font-weight:700;
  padding:14px 28px;
  border-radius:30px;
  transition:transform .2s,background .2s;
  flex-shrink:0;
}
.teaser-btn:hover{
  background:#FFFFFF;
  transform:translateY(-2px);
}

/* FOOTER */
.site-footer{
  background:#0D1B2A;
  color:rgba(255,255,255,0.7);
  padding-block:72px 36px;
  font-size:13px;
  line-height:1.7;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:48px;
  margin-bottom:56px;
}
.footer-col h4{
  color:#FFFFFF;
  font-size:14px;
  text-transform:uppercase;
  letter-spacing:0.12em;
  margin-bottom:20px;
  font-weight:600;
}
.footer-col a{
  color:rgba(255,255,255,0.75);
  display:block;
  margin-bottom:10px;
  transition:color .2s;
}
.footer-col a:hover{
  color:var(--gold);
}
.footer-bottom{
  padding-top:32px;
  border-top:1px solid rgba(255,255,255,0.1);
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
}
.signature-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#FFFFFF;
  font-weight:600;
}

/* BUTTONS & CONTROLS */
.btn-primary{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:var(--blue);
  color:#FFFFFF;
  padding:14px 28px;
  border-radius:30px;
  font-weight:600;
  font-size:14px;
  transition:background .2s,transform .2s;
}
.btn-primary:hover{
  background:var(--deep);
  transform:translateY(-2px);
}
.btn-secondary{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:var(--card-bg);
  color:var(--deep);
  padding:14px 28px;
  border-radius:30px;
  font-weight:600;
  font-size:14px;
  border:1px solid var(--line);
  transition:background .2s,transform .2s;
}
.btn-secondary:hover{
  background:var(--ice);
  transform:translateY(-2px);
}

/* MOTION PAUSE UTILITY */
body.paused *{
  animation:none !important;
  transition:none !important;
}

/* RESPONSIVE BREAKPOINTS (1100, 768, 390, 320) */
@media (max-width:1100px){
  .wrap{width:min(980px,calc(100% - 48px))}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .blueprint-grid{grid-template-columns:1fr;gap:40px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .sectors-grid{grid-template-columns:repeat(2,1fr)}
  .materials-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header{padding:0 20px;height:76px}
  .menu-toggle{display:block}
  nav{
    display:none;
    position:absolute;
    top:76px;
    left:0;
    right:0;
    background:var(--card-bg);
    padding:24px;
    flex-direction:column;
    align-items:flex-start;
    border-bottom:1px solid var(--line);
    box-shadow:0 12px 30px rgba(0,0,0,0.1);
  }
  nav.open{display:flex}
  .flow-grid{grid-template-columns:1fr}
  .sectors-grid{grid-template-columns:1fr}
  .conditions-teaser{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .opening-block{padding:40px 28px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:390px){
  .wrap{width:calc(100% - 32px)}
  .section{padding-block:70px}
  .meta-num{font-size:26px}
  h1{font-size:36px}
  h2{font-size:28px}
}
@media (max-width:320px){
  .wrap{width:calc(100% - 24px)}
  .header{padding:0 12px}
  .brand img{height:36px}
}