/* =====================================================================
   L'USINE — site vitrine
   Concept : forge / chaîne de montage. Graphite + coulée molten coral→ambre.
   ===================================================================== */

:root{
  --graphite:#0F1015;
  --iron:#16171F;
  --steel:#1E2029;
  --steel-2:#262935;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);

  --molten:#FF6D5A;      /* marque */
  --ember:#FFA24B;       /* partenaire de gradient (chaleur) */
  --arc:#7C8CFF;         /* accent froid, rare (IA) */

  --filament:#ECEDF3;    /* texte principal */
  --smoke:#9EA0B4;       /* texte secondaire */
  --smoke-2:#6C6E80;     /* texte faible */

  --molten-grad:linear-gradient(100deg,var(--molten),var(--ember));
  --radius:16px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,1,.36,1);

  /* rythme vertical */
  --sec-pad:clamp(84px,11vw,128px);
  --head-gap:clamp(40px,6vw,60px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{
  font-family:'Inter',system-ui,sans-serif;
  background:var(--graphite);
  color:var(--filament);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
.lenis.lenis-smooth{scroll-behavior:auto!important}

h1,h2,h3,h4,.brand-name{font-family:'Space Grotesk',sans-serif;font-weight:600;line-height:1.08;letter-spacing:-.02em}
h1,h2,h3{text-wrap:balance}
.mono{font-family:'JetBrains Mono',monospace}
a{color:inherit;text-decoration:none}
::selection{background:rgba(255,109,90,.32);color:var(--filament)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;width:100%}
.narrow{max-width:820px}
.center{text-align:center}

section[id],.plan[id]{scroll-margin-top:92px}

/* skip link (a11y) */
.skip-link{position:fixed;top:-60px;left:16px;z-index:100;padding:10px 18px;border-radius:10px;
  background:var(--steel-2);color:var(--filament);font-size:.9rem;transition:top .25s var(--ease)}
.skip-link:focus-visible{top:14px}

/* grain overlay */
.grain{position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.035;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}

/* progression de lecture : la coulée avance avec le scroll */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;pointer-events:none}
.progress span{display:block;height:100%;background:var(--molten-grad);transform:scaleX(0);
  transform-origin:left;box-shadow:0 0 12px rgba(255,109,90,.55)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.7rem 1.25rem;border-radius:999px;
  font-weight:600;font-size:.94rem;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .3s,background .3s,border-color .3s;white-space:nowrap}
.btn:active{transform:translateY(0) scale(.985)}
.btn-molten{position:relative;overflow:hidden;background:var(--molten-grad);color:#1a0f0c;
  box-shadow:0 6px 24px -6px rgba(255,109,90,.55)}
.btn-molten::before{content:"";position:absolute;top:-4px;bottom:-4px;left:-45%;width:38%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-18deg);transition:left .55s var(--ease);pointer-events:none}
.btn-molten:hover{transform:translateY(-2px);box-shadow:0 12px 34px -6px rgba(255,109,90,.7)}
.btn-molten:hover::before{left:120%}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-2);color:var(--filament)}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:var(--molten);transform:translateY(-2px)}
.btn-lg{padding:.95rem 1.7rem;font-size:1.02rem}
.btn-block{width:100%;justify-content:center}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding:16px 28px;max-width:100vw;
  background:rgba(15,16,21,.6);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s,padding .3s,box-shadow .3s}
.nav.scrolled{border-color:var(--line);background:rgba(15,16,21,.85);padding:11px 28px;
  box-shadow:0 10px 30px -18px rgba(0,0,0,.8)}
.brand{display:flex;align-items:center;gap:11px}
.brand-name{font-size:1.28rem;font-weight:700;letter-spacing:-.03em}
.brand-mark{position:relative;width:30px;height:26px;display:flex;align-items:flex-end;gap:3px}
.brand-mark.small{width:26px;height:22px}
.brand-mark .chimney{width:7px;background:var(--molten-grad);border-radius:3px 3px 0 0;
  box-shadow:0 0 12px -2px rgba(255,109,90,.6);transition:height .35s var(--ease)}
.brand-mark .chimney:nth-child(1){height:60%}
.brand-mark .chimney:nth-child(2){height:100%}
.brand-mark .chimney:nth-child(3){height:78%}
.brand:hover .chimney:nth-child(1){height:78%}
.brand:hover .chimney:nth-child(3){height:92%}
.nav-links{display:flex;gap:26px;font-size:.92rem;color:var(--smoke)}
.nav-links a{position:relative;transition:color .2s;padding:4px 0}
.nav-links a:hover,.nav-links a.active{color:var(--filament)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;
  background:var(--molten-grad);border-radius:2px;transition:width .25s var(--ease)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{display:flex;gap:10px;align-items:center}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;border-radius:8px}
.burger span{width:24px;height:2px;background:var(--filament);border-radius:2px;transition:.3s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.burger.open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.menu-backdrop{position:fixed;inset:0;z-index:48;background:rgba(8,9,12,.55);
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  opacity:0;pointer-events:none;transition:opacity .35s var(--ease)}
.menu-backdrop.show{opacity:1;pointer-events:auto}
.mobile-menu{position:fixed;top:0;right:0;bottom:0;width:min(80vw,320px);z-index:49;background:var(--iron);
  border-left:1px solid var(--line);display:flex;flex-direction:column;gap:6px;padding:88px 24px 24px;
  transform:translateX(105%);transition:transform .45s var(--ease);visibility:hidden}
.mobile-menu.open{transform:translateX(0);visibility:visible}
.mobile-menu a{padding:13px 6px;color:var(--smoke);border-bottom:1px solid var(--line);font-size:1rem;transition:color .2s,padding-left .25s var(--ease)}
.mobile-menu a:hover{color:var(--filament);padding-left:12px}
.mobile-menu a.btn{margin-top:16px;border:none;color:#1a0f0c;justify-content:center;padding:.85rem 1.25rem}
body.menu-open{overflow:hidden}

/* ---------- Sections ---------- */
.section{position:relative;padding:var(--sec-pad) 0;z-index:2}
.band{background:linear-gradient(180deg,transparent,rgba(255,255,255,.015) 12%,rgba(255,255,255,.015) 88%,transparent);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:var(--head-gap);max-width:760px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{display:inline-block;font-size:.78rem;color:var(--molten);letter-spacing:.05em;margin-bottom:18px;
  padding:5px 13px;border:1px solid rgba(255,109,90,.3);border-radius:999px;background:rgba(255,109,90,.06)}
.sec-head h2{font-size:clamp(1.85rem,1.1rem + 3.2vw,3rem)}
.sec-intro{margin-top:18px;color:var(--smoke);font-size:1.08rem;max-width:640px;text-wrap:pretty}
.sec-head.center .sec-intro{margin-left:auto;margin-right:auto}
h2 .molten-text,.molten-text{background:var(--molten-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{font-size:1.18rem;color:var(--filament);margin-bottom:18px;text-wrap:pretty}
.section p{color:var(--smoke)}
.section p strong{color:var(--filament);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(150px,20vw,180px) 0 90px;overflow:hidden;z-index:2}
.hero-glow{position:absolute;top:-10%;left:50%;transform:translateX(-50%);width:min(900px,120vw);height:600px;
  background:radial-gradient(ellipse at center,rgba(255,109,90,.16),rgba(255,162,75,.07) 40%,transparent 70%);
  filter:blur(30px);pointer-events:none}
.hero-glow-2{position:absolute;top:8%;right:-12%;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(124,140,255,.09),transparent 65%);
  filter:blur(24px);pointer-events:none}
.embers{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.embers i{position:absolute;bottom:-8px;border-radius:50%;background:var(--ember);opacity:0;
  filter:blur(.4px);animation:ember 9s linear infinite}
.embers i:nth-child(1){left:12%;width:3px;height:3px;animation-duration:10s;animation-delay:.5s}
.embers i:nth-child(2){left:26%;width:4px;height:4px;animation-duration:8s;animation-delay:2.4s}
.embers i:nth-child(3){left:41%;width:3px;height:3px;animation-duration:11s;animation-delay:4.2s}
.embers i:nth-child(4){left:55%;width:5px;height:5px;animation-duration:9s;animation-delay:1.2s}
.embers i:nth-child(5){left:68%;width:3px;height:3px;animation-duration:12s;animation-delay:5.6s}
.embers i:nth-child(6){left:81%;width:4px;height:4px;animation-duration:8.5s;animation-delay:3.1s}
.embers i:nth-child(7){left:92%;width:3px;height:3px;animation-duration:10.5s;animation-delay:6.4s}
@keyframes ember{
  0%{transform:translateY(0) translateX(0);opacity:0}
  8%{opacity:.5}
  60%{opacity:.25}
  100%{transform:translateY(-72vh) translateX(26px);opacity:0}
}
.hero-inner{position:relative;text-align:center;display:flex;flex-direction:column;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.84rem;color:var(--smoke);
  padding:7px 15px;border:1px solid var(--line-2);border-radius:999px;background:rgba(255,255,255,.02);margin-bottom:30px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--molten);box-shadow:0 0 10px var(--molten);animation:blink 2.4s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
.hero-title{font-size:clamp(2.35rem,1.2rem + 5.4vw,4.6rem);font-weight:700;max-width:15ch;margin-bottom:26px}
.hero-sub{font-size:clamp(1.02rem,1.6vw,1.22rem);color:var(--smoke);max-width:660px;margin-bottom:38px;text-wrap:pretty}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:clamp(56px,8vw,80px)}

/* ---------- Signature 1 : la chaîne de montage ---------- */
.assembly{position:relative;width:100%;max-width:860px;padding:44px 20px 20px}
.rail{position:relative;height:4px;margin:0 8%;border-radius:4px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.12) 8%,rgba(255,255,255,.12) 92%,transparent);overflow:visible}
.pulse{position:absolute;top:50%;left:8%;width:64px;height:8px;transform:translateY(-50%);border-radius:8px;
  background:var(--molten-grad);box-shadow:0 0 22px 3px rgba(255,109,90,.75);filter:blur(.3px)}
.stations{position:relative;display:flex;justify-content:space-between;margin:-34px 8% 0}
.station{display:flex;flex-direction:column;align-items:center;gap:12px;flex:0 0 auto;width:64px}
.station-core{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;font-size:1.5rem;
  background:var(--steel);border:1px solid var(--line-2);position:relative;transition:.4s var(--ease);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
.station-core::after{content:"";position:absolute;inset:-1px;border-radius:18px;padding:1px;
  background:var(--molten-grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .4s}
.station .ico{filter:grayscale(.55) brightness(.85);transition:filter .4s}
.station.lit .ico{filter:none}
.station.lit .station-core{transform:translateY(-4px);background:var(--steel-2);box-shadow:0 10px 30px -8px rgba(255,109,90,.5)}
.station.lit .station-core::after{opacity:1}
/* flambée quand la coulée passe sous le poste */
.station.flare .station-core{transform:translateY(-8px) scale(1.07);
  box-shadow:0 16px 44px -8px rgba(255,109,90,.8);background:#2B2530}
.station-label{font-size:.8rem;color:var(--smoke);font-family:'JetBrains Mono',monospace;
  display:flex;align-items:center;gap:7px;white-space:nowrap;transition:color .3s}
.station-label .s-idx{font-size:.68rem;color:var(--smoke-2);transition:color .3s}
.station.lit .station-label{color:var(--filament)}
.station.lit .s-idx{color:var(--molten)}
.assembly-caption{margin-top:34px;text-align:center;font-size:.8rem;color:var(--smoke-2)}

/* ---------- Two column / compare ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.compare-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.compare-side{padding:24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--iron)}
.compare-side.dim{opacity:.72}
.compare-side.hot{border-color:rgba(255,109,90,.35);background:linear-gradient(180deg,rgba(255,109,90,.06),var(--iron))}
.compare-h{font-size:.82rem;margin-bottom:14px;color:var(--smoke)}
.compare-side.hot .compare-h{color:var(--molten)}
.compare-side ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.compare-side li{font-size:.92rem;color:var(--smoke);padding-left:20px;position:relative}
.compare-side li::before{content:"—";position:absolute;left:0;color:var(--smoke-2)}
.compare-side.hot li{color:var(--filament)}
.compare-side.hot li::before{content:"▸";color:var(--molten)}
.compare-side em{font-style:normal;color:var(--molten);font-weight:600}

/* ---------- Steps + rail de production ---------- */
.steps-rail{position:relative;height:16px;margin-bottom:24px;display:none}
.rail-track{position:absolute;left:12.5%;right:12.5%;top:50%;height:2px;transform:translateY(-50%);
  display:block;background:var(--line);border-radius:2px;overflow:hidden}
.rail-fill{display:block;height:100%;background:var(--molten-grad);
  transform:scaleX(0);transform-origin:left;transition:transform 1.5s var(--ease) .15s}
.steps-rail.drawn .rail-fill{transform:scaleX(1)}
.rail-dots{position:absolute;inset:0;display:grid;grid-template-columns:repeat(4,1fr)}
.rail-dots i{place-self:center;width:11px;height:11px;border-radius:50%;
  background:var(--steel-2);border:1px solid var(--line-2);transition:background .35s,box-shadow .35s,border-color .35s}
.rail-dots i:nth-child(1){transition-delay:.2s}
.rail-dots i:nth-child(2){transition-delay:.62s}
.rail-dots i:nth-child(3){transition-delay:1.04s}
.rail-dots i:nth-child(4){transition-delay:1.46s}
.steps-rail.drawn .rail-dots i{background:var(--molten);border-color:transparent;box-shadow:0 0 14px rgba(255,109,90,.65)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{padding:28px 24px;border-radius:var(--radius);background:var(--iron);border:1px solid var(--line);
  position:relative;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.step:hover{transform:translateY(-5px);border-color:var(--line-2);box-shadow:0 18px 40px -24px rgba(0,0,0,.7)}
.step-num{font-size:.85rem;color:var(--molten);margin-bottom:18px;
  width:40px;height:40px;display:grid;place-items:center;border-radius:11px;
  border:1px solid rgba(255,109,90,.3);background:rgba(255,109,90,.06);transition:background .3s,box-shadow .3s}
.step:hover .step-num{background:rgba(255,109,90,.14);box-shadow:0 0 18px -4px rgba(255,109,90,.5)}
.step h3{font-size:1.16rem;margin-bottom:10px}
.step p{font-size:.94rem}

/* ---------- Pipeline (cas d'usage) ---------- */
.pipeline{padding:34px;border-radius:22px;background:var(--iron);border:1px solid var(--line);margin-bottom:44px;
  display:flex;flex-direction:column;align-items:center;gap:22px}
.pipe-in,.pipe-out{text-align:center;font-size:.85rem;color:var(--smoke);padding:11px 16px;border-radius:10px;
  background:var(--steel);border:1px solid var(--line);display:inline-block;margin:0 auto;max-width:100%}
.pipe-in{color:var(--arc);border-color:rgba(124,140,255,.3);background:rgba(124,140,255,.05)}
.pipe-out{color:var(--molten);border-color:rgba(255,109,90,.35);background:rgba(255,109,90,.05)}
.pipe-flow{display:flex;align-items:stretch;gap:8px;width:100%;justify-content:center}
.pipe-node{flex:1;min-width:0;padding:22px 18px;border-radius:14px;background:var(--steel);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.pipe-node:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:0 16px 36px -22px rgba(0,0,0,.8)}
.pipe-node.hot{border-color:rgba(255,109,90,.4);background:linear-gradient(180deg,rgba(255,109,90,.07),var(--steel))}
.pn-badge{font-size:.72rem;color:var(--smoke-2);margin-bottom:12px}
.pipe-node.hot .pn-badge{color:var(--molten)}
.pn-ico{font-size:1.7rem;margin-bottom:12px}
.pipe-node h4{font-size:1.02rem;margin-bottom:8px}
.pipe-node p{font-size:.86rem;color:var(--smoke);line-height:1.5}
.pipe-arrow{display:flex;align-items:center;color:var(--molten);font-size:1.4rem;flex:0 0 auto;opacity:.7;
  animation:arrow-pulse 2.2s var(--ease) infinite}
.pipe-arrow:nth-of-type(4){animation-delay:.35s}
.pipe-arrow:nth-of-type(6){animation-delay:.7s}
@keyframes arrow-pulse{0%,100%{opacity:.45;transform:translateX(0)}50%{opacity:1;transform:translateX(3px)}}

.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.use-card{padding:28px 24px;border-radius:var(--radius);background:var(--iron);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.use-card:hover{transform:translateY(-5px);border-color:var(--line-2);box-shadow:0 18px 40px -24px rgba(0,0,0,.7)}
.uc-ico{font-size:1.9rem;margin-bottom:16px}
.use-card h4{font-size:1.1rem;margin-bottom:9px}
.use-card p{font-size:.92rem}

/* ---------- Chips (connecteurs) ---------- */
.chips{display:flex;flex-wrap:wrap;gap:11px;justify-content:center;max-width:920px;margin:0 auto}
.chip{padding:10px 16px;border-radius:999px;background:var(--iron);border:1px solid var(--line);
  font-size:.9rem;color:var(--smoke);transition:.25s var(--ease);cursor:default}
.chip:hover{border-color:var(--molten);color:var(--filament);transform:translateY(-2px);box-shadow:0 6px 20px -8px rgba(255,109,90,.4)}
.chips-note{text-align:center;margin-top:26px;color:var(--smoke-2);font-size:.86rem}

/* ---------- Le cerveau (modèles IA) ---------- */
.brains{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:28px}
.brain-chip{font-size:.84rem;color:var(--arc);padding:8px 17px;border-radius:999px;
  border:1px solid rgba(124,140,255,.28);background:rgba(124,140,255,.06);transition:.25s var(--ease);cursor:default}
.brain-chip:hover{border-color:var(--arc);transform:translateY(-2px);box-shadow:0 6px 20px -8px rgba(124,140,255,.4)}

/* ---------- Tarifs ---------- */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.plan{position:relative;padding:34px 28px;border-radius:20px;background:var(--iron);border:1px solid var(--line);
  display:flex;flex-direction:column;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.plan:hover{transform:translateY(-5px);border-color:var(--line-2)}
.plan.featured{border-color:rgba(255,109,90,.45);background:linear-gradient(180deg,rgba(255,109,90,.07),var(--iron));
  box-shadow:0 20px 60px -30px rgba(255,109,90,.5)}
.plan.featured:hover{transform:translateY(-5px);box-shadow:0 26px 70px -30px rgba(255,109,90,.6)}
.plan-flag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);font-size:.72rem;color:#1a0f0c;
  background:var(--molten-grad);padding:5px 14px;border-radius:999px;font-weight:600;
  box-shadow:0 4px 16px -4px rgba(255,109,90,.6)}
.plan-name{font-family:'Space Grotesk';font-size:1.1rem;color:var(--smoke);margin-bottom:14px}
.plan-price{display:flex;align-items:baseline;gap:8px;margin-bottom:6px}
.plan-price .amount{font-family:'Space Grotesk';font-size:2.6rem;font-weight:700;color:var(--filament)}
.plan-price .amount-txt{font-size:1.55rem;line-height:2.6rem}
.plan-price .per{color:var(--smoke-2);font-size:.95rem}
.plan-desc{font-size:.92rem;color:var(--smoke);margin-bottom:22px;min-height:2.6em}
.plan-feats{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1}
.plan-feats li{font-size:.92rem;color:var(--smoke);padding-left:26px;position:relative}
.plan-feats li::before{content:"✓";position:absolute;left:0;color:var(--molten);font-weight:700}
.tarifs-note{text-align:center;margin-top:30px;color:var(--smoke-2);font-size:.86rem;max-width:640px;margin-left:auto;margin-right:auto}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--iron);overflow:hidden;transition:border-color .3s}
.faq details:hover{border-color:var(--line-2)}
.faq details[open]{border-color:rgba(255,109,90,.3)}
.faq summary{padding:20px 24px;cursor:pointer;font-family:'Space Grotesk';font-weight:600;font-size:1.04rem;
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .2s}
.faq summary:hover{color:var(--filament)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--molten);font-size:1.4rem;line-height:1;transition:transform .3s var(--ease);flex:0 0 auto}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 24px 22px;color:var(--smoke);font-size:.96rem}
.faq details[open] p{animation:faq-in .4s var(--ease)}
@keyframes faq-in{from{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:none}}

/* ---------- CTA final ---------- */
.cta-final{position:relative;padding:clamp(96px,14vw,140px) 0;text-align:center;overflow:hidden;z-index:2;
  border-top:1px solid var(--line)}
.cta-glow{position:absolute;bottom:-40%;left:50%;transform:translateX(-50%);width:min(900px,120vw);height:600px;
  background:radial-gradient(ellipse at center,rgba(255,109,90,.18),transparent 65%);filter:blur(30px)}
.cta-final h2{font-size:clamp(2rem,5vw,3.4rem);margin-bottom:18px}
.cta-final p{color:var(--smoke);font-size:1.12rem;margin-bottom:34px}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding:56px 0 30px;position:relative;z-index:2;background:var(--iron)}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:34px;border-bottom:1px solid var(--line)}
.footer-tag{color:var(--smoke);font-size:.92rem;margin-top:14px;max-width:260px}
.footer-links{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start}
.footer-links a{color:var(--smoke);font-size:.92rem;transition:color .2s}
.footer-links a:hover{color:var(--molten)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;color:var(--smoke-2);font-size:.82rem}

/* ---------- Reveal animation base ---------- */
.reveal{opacity:0;transform:translateY(26px)}
.reveal.in{opacity:1;transform:none;transition:opacity .8s var(--ease),transform .8s var(--ease)}

/* ---------- Spotlight au survol (cartes) ---------- */
.spot{position:relative}
.spot::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  opacity:0;transition:opacity .35s;z-index:1;
  background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgba(255,158,122,.09),transparent 68%)}
.spot:hover::after{opacity:1}

/* =====================================================================
   SIGNATURE 2 — DÉMO : atelier en action (mock du canevas d'exécution)
   ===================================================================== */
.demo-canvas{max-width:1000px;margin:0 auto;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-2);background:
    radial-gradient(circle at 1px 1px,rgba(255,255,255,.05) 1px,transparent 0) 0 0/22px 22px,
    linear-gradient(180deg,#12131A,#0D0E13);
  box-shadow:0 40px 100px -40px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.02) inset}
.demo-topbar{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.02)}
.demo-dots{display:flex;gap:7px;flex:0 0 auto}
.demo-dots span{width:11px;height:11px;border-radius:50%;background:var(--steel-2);border:1px solid var(--line-2)}
.demo-title{font-size:.82rem;color:var(--smoke);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo-step{font-size:.74rem;color:var(--smoke-2);padding:3px 11px;border:1px solid var(--line);border-radius:999px;flex:0 0 auto}
.demo-run{font-size:.78rem;color:var(--molten);display:flex;align-items:center;gap:7px;flex:0 0 auto}
.demo-run .run-dot{width:8px;height:8px;border-radius:50%;background:var(--molten);box-shadow:0 0 8px var(--molten);animation:blink 1.2s infinite}
.demo-run.done{color:var(--arc)}
.demo-run.done .run-dot{background:var(--arc);box-shadow:0 0 8px var(--arc);animation:none}

.demo-flow{display:flex;align-items:center;justify-content:center;gap:0;padding:44px 26px;flex-wrap:nowrap}
.wf-node{flex:0 1 190px;min-width:0;padding:16px 16px 14px;border-radius:14px;background:var(--steel);
  border:1px solid var(--line-2);position:relative;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;z-index:2}
.wf-node::after{content:"";position:absolute;inset:-1px;border-radius:14px;padding:1px;background:var(--molten-grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .35s}
.wf-node.running{transform:translateY(-5px);box-shadow:0 16px 40px -12px rgba(255,109,90,.55);
  animation:node-halo 1.4s ease-in-out infinite}
@keyframes node-halo{0%,100%{box-shadow:0 16px 40px -12px rgba(255,109,90,.45)}50%{box-shadow:0 16px 52px -10px rgba(255,109,90,.75)}}
.wf-node.running::after{opacity:1}
.wf-node.done{border-color:rgba(124,140,255,.4)}
.wf-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.wf-ico{font-size:1.35rem;filter:grayscale(.4);transition:filter .35s}
.wf-node.running .wf-ico,.wf-node.done .wf-ico{filter:none}
.wf-name{font-family:'Space Grotesk';font-weight:600;font-size:.92rem;line-height:1.15}
.wf-status{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--smoke-2);display:flex;align-items:center;gap:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wf-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--smoke-2);flex:0 0 auto}
.wf-node.running .wf-status{color:var(--molten)}
.wf-node.running .wf-status::before{background:var(--molten);box-shadow:0 0 8px var(--molten);animation:blink 1s infinite}
.wf-node.done .wf-status{color:var(--arc)}
.wf-node.done .wf-status::before{background:var(--arc);box-shadow:0 0 6px var(--arc);animation:none}

.wf-wire{flex:1 1 26px;height:3px;min-width:26px;position:relative;background:var(--line-2);border-radius:3px;overflow:visible;z-index:1}
.wf-wire::before{content:"";position:absolute;inset:0;border-radius:3px;background:var(--molten-grad);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.wf-wire.filled::before{transform:scaleX(1)}
.wf-spark{position:absolute;top:50%;left:0;width:10px;height:10px;border-radius:50%;transform:translate(-50%,-50%);
  background:var(--ember);box-shadow:0 0 14px 3px rgba(255,162,75,.85);opacity:0}
.wf-wire.active .wf-spark{opacity:1;animation:spark-run .55s var(--ease) forwards}
@keyframes spark-run{from{left:0}to{left:100%}}

.demo-log{padding:14px 18px;border-top:1px solid var(--line);background:rgba(0,0,0,.25);
  font-size:.8rem;color:var(--smoke);min-height:46px;display:flex;align-items:center;gap:8px}
.demo-log::before{content:"›";color:var(--molten);font-weight:700;flex:0 0 auto}
.demo-log .caret{width:7px;height:14px;background:var(--molten);opacity:.75;flex:0 0 auto;
  animation:caret-blink 1.1s steps(1) infinite}
@keyframes caret-blink{50%{opacity:0}}
.demo-note{text-align:center;margin-top:22px;color:var(--smoke-2);font-size:.84rem}

/* ---------- Responsive ---------- */
@media(min-width:901px){
  .steps-rail{display:block}
}
@media(max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .two-col{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:1fr 1fr}
  .use-grid{grid-template-columns:1fr}
  .plans{grid-template-columns:minmax(0,1fr);max-width:440px;margin:0 auto}
  .plan.featured{order:-1}
  .pipe-flow{flex-direction:column;align-items:stretch}
  .pipe-arrow{transform:rotate(90deg);justify-content:center;padding:2px 0;animation:none;opacity:.7}
}
@media(max-width:760px){
  .demo-flow{flex-direction:column;gap:0;padding:30px 18px}
  .wf-node{flex:0 0 auto;width:min(100%,300px)}
  .wf-wire{width:3px;height:26px;flex:0 0 26px;min-width:0}
  .wf-wire::before{transform-origin:top;transform:scaleY(0)}
  .wf-wire.filled::before{transform:scaleY(1)}
  .wf-spark{top:0;left:50%;animation:none}
  .wf-wire.active .wf-spark{animation:spark-run-v .55s var(--ease) forwards}
  @keyframes spark-run-v{from{top:0}to{top:100%}}
  /* hauteur FIXE du log (2 lignes) : le texte qui s'écrit ne doit jamais
     faire bouger la hauteur de la page pendant le scroll */
  .demo-log{height:74px;min-height:0}
  #demoLog{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;
    line-height:1.6;max-height:41px}
}
@media(max-width:540px){
  .wrap{padding:0 20px}
  .steps{grid-template-columns:1fr}
  .assembly{padding:30px 0 10px}
  .rail,.stations{margin-left:4%;margin-right:4%}
  .station{width:52px}
  .station-core{width:52px;height:52px;font-size:1.2rem;border-radius:14px}
  .station-core::after{border-radius:14px}
  .station-label{font-size:.68rem;gap:5px}
  .station-label .s-idx{display:none}
  .hero{padding:132px 0 64px}
  .compare-row{grid-template-columns:1fr}
  .demo-title{display:none}
  .pipeline{padding:24px 18px}
}
@media(max-width:430px){
  .hero-actions{width:100%;flex-direction:column;align-items:center}
  .hero-actions .btn{width:min(100%,320px);justify-content:center}
  .footer-bottom{justify-content:center;text-align:center}
}

/* =====================================================================
   PAGE ABONNEMENT + MERCI
   ===================================================================== */
.page-head{position:relative;padding:clamp(150px,18vw,190px) 0 clamp(24px,4vw,48px);overflow:hidden;z-index:2}
.page-head h1{font-size:clamp(2.1rem,1.2rem + 4vw,3.6rem);font-weight:700;max-width:18ch;margin:0 auto 20px}
.page-head .sec-intro{margin-left:auto;margin-right:auto}
.offres{padding-top:clamp(36px,5vw,56px)}

.plans.detailed .plan{padding:38px 30px}
.plan-who{font-size:.88rem;color:var(--smoke);margin-bottom:22px;padding:12px 15px;line-height:1.5;
  border:1px solid rgba(124,140,255,.25);background:rgba(124,140,255,.05);border-radius:12px}
.plan-who strong{color:var(--arc);font-weight:600}
.plan-feats .feat-note{display:block;color:var(--smoke-2);font-size:.8rem;line-height:1.45;margin-top:3px;font-weight:400}
.plan-small{text-align:center;margin-top:14px;font-size:.72rem;color:var(--smoke-2)}

/* tableau comparatif */
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:var(--iron);
  -webkit-overflow-scrolling:touch}
table.compare{width:100%;border-collapse:collapse;min-width:660px;font-size:.9rem}
.compare th,.compare td{padding:13px 20px;text-align:left;border-bottom:1px solid var(--line);color:var(--smoke)}
.compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0}
.compare thead th{font-family:'JetBrains Mono',monospace;font-size:.76rem;letter-spacing:.04em;
  color:var(--filament);background:rgba(255,255,255,.025);padding-top:16px;padding-bottom:16px}
.compare thead th.hl{color:var(--molten)}
.compare th:nth-child(3),.compare td:nth-child(3){background:rgba(255,109,90,.045)}
.compare td:first-child{color:var(--filament);font-weight:500}
.compare td.ok{color:var(--molten);font-weight:700}
.compare td.no{color:var(--smoke-2)}
.compare tbody tr{transition:background .2s}
.compare tbody tr:hover td{background:rgba(255,255,255,.015)}
.compare tbody tr:hover td:nth-child(3){background:rgba(255,109,90,.07)}

/* strip paiement */
.pay-strip{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:680px;margin:0 auto 26px}
.pay-item{display:flex;align-items:center;gap:12px;font-size:.9rem;color:var(--smoke);
  padding:15px 18px;border:1px solid var(--line);border-radius:14px;background:var(--iron)}
.pay-item strong{color:var(--filament)}
.pay-legal{text-align:center;color:var(--smoke-2);font-size:.85rem;max-width:640px;margin:0 auto;line-height:1.6}
.pay-legal a{color:var(--molten);text-decoration:underline;text-underline-offset:3px}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;z-index:80;max-width:min(92vw,540px);
  transform:translateX(-50%) translateY(16px);opacity:0;pointer-events:none;
  background:var(--steel-2);border:1px solid var(--line-2);border-left:3px solid var(--molten);
  color:var(--filament);font-size:.92rem;line-height:1.5;padding:15px 20px;border-radius:14px;
  box-shadow:0 20px 60px -20px rgba(0,0,0,.9);transition:opacity .35s var(--ease),transform .35s var(--ease)}
.toast.show{opacity:1;transform:translateX(-50%)}
.btn.is-loading{opacity:.65;pointer-events:none}

/* page merci */
.thanks{padding-bottom:clamp(10px,2vw,24px)}
.thanks .check{width:76px;height:76px;border-radius:50%;background:var(--molten-grad);
  display:grid;place-items:center;font-size:2.1rem;font-weight:700;color:#1a0f0c;margin:0 auto 28px;
  box-shadow:0 14px 44px -10px rgba(255,109,90,.7)}
.thanks-steps{padding-top:clamp(28px,4vw,44px)}
.next-steps{list-style:none;counter-reset:etape;display:flex;flex-direction:column;gap:16px;margin-bottom:44px}
.next-steps li{counter-increment:etape;position:relative;padding:24px 26px 24px 78px;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--iron)}
.next-steps li::before{content:"0" counter(etape);position:absolute;left:22px;top:24px;
  font-family:'JetBrains Mono',monospace;font-size:.85rem;color:var(--molten);
  width:40px;height:40px;display:grid;place-items:center;border-radius:11px;
  border:1px solid rgba(255,109,90,.3);background:rgba(255,109,90,.06)}
.next-steps h3{font-size:1.08rem;margin-bottom:7px}
.next-steps p{font-size:.94rem;color:var(--smoke)}
.next-steps a{color:var(--molten);text-decoration:underline;text-underline-offset:3px}
.thanks-cta .btn{margin-bottom:22px}

/* lien "comparer les offres" (index) */
.plans-more{text-align:center;margin-top:26px}
.plans-more a{color:var(--molten);font-weight:600;font-size:.96rem;display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid rgba(255,109,90,.35);padding-bottom:2px;transition:border-color .25s,gap .25s var(--ease)}
.plans-more a:hover{border-color:var(--molten);gap:10px}

@media(max-width:640px){
  .pay-strip{grid-template-columns:1fr}
  .next-steps li{padding:20px 18px 20px 68px}
  .next-steps li::before{left:16px;top:20px;width:36px;height:36px}
  .plans.detailed .plan{padding:30px 22px}
}

/* ---------- Accessibilité ---------- */
:focus-visible{outline:2px solid var(--molten);outline-offset:3px;border-radius:4px}
.btn:focus-visible{outline-offset:2px}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .embers{display:none}
  .pulse{opacity:0}
  .demo-log .caret{opacity:.75}
}