:root{
  --paper:#F8FAFC; --paper-2:#F1F5F9; --line:#E2E8F0; --line-strong:#CBD5E1;
  --ink:#0F172A; --ink-soft:#475569; --ink-faint:#94A3B8;
  --signal:#7C3AED; --signal-deep:#6D28D9; --signal-wash:#F3EEFE; --signal-ring:#C4B5FD; --signal-bright:#A78BFA;
  --ok:#16A34A; --warn:#D97706; --bad:#DC2626;
  --mon:#090B0E; --mon-2:#14171D; --mon-line:#252A33; --mon-text:#E8EAF0; --mon-faint:#8B8FA3;
  --maxw:1180px; --r:14px; --r-lg:20px;
  --shadow:0 1px 2px rgba(30,41,59,.04),0 14px 34px -16px rgba(76,29,149,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Plus Jakarta Sans",ui-sans-serif,system-ui,sans-serif;background:var(--paper);color:var(--ink);
  -webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums;line-height:1.55}
img{max-width:100%;height:auto;display:block}
a{color:inherit}

/* ---------- Barre de navigation ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:40;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:14px clamp(18px,4vw,40px);background:rgba(9,11,14,.62);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.06);transition:background .3s,border-color .3s}
.nav.light{background:rgba(248,250,252,.86);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;letter-spacing:-.02em;font-size:17px;color:#fff;text-decoration:none}
.nav.light .brand{color:var(--ink)}
.brand span.mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(140deg,var(--signal),#A78BFA);
  display:grid;place-items:center;color:#fff;font-size:13px}
.nav-links{display:flex;gap:22px;font-size:14px;font-weight:600;color:#C6CAD8}
.nav.light .nav-links{color:var(--ink-soft)}
.nav-links a{text-decoration:none}
.nav-links a:hover{color:#fff}
.nav.light .nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav .btn{padding:9px 16px;font-size:14px}
@media(max-width:860px){.nav-links{display:none}}

/* ---------- Boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:12px;
  font-weight:700;font-size:15px;text-decoration:none;transition:.18s;border:1px solid transparent;cursor:pointer}
.btn-1{background:var(--signal);color:#fff}
.btn-1:hover{background:var(--signal-deep)}
.btn-2{border-color:var(--mon-line);color:var(--mon-text);background:rgba(255,255,255,.04)}
.btn-2:hover{border-color:#3A404A}
.btn-light{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-light:hover{border-color:var(--line-strong)}

/* ---------- Hero immersif ---------- */
.hero-scope{position:relative;background:var(--mon);color:var(--mon-text)}
.hero-sticky{position:sticky;top:0;height:100vh;overflow:hidden}
.hero-sticky canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-veil{position:absolute;inset:0;pointer-events:none;opacity:0;
  background:linear-gradient(100deg,rgba(9,11,14,.88) 0%,rgba(9,11,14,.48) 36%,rgba(9,11,14,.10) 62%,rgba(9,11,14,.44) 100%)}
.hero-acts{position:relative;margin-top:-100vh;z-index:2}
.act{position:relative;min-height:100vh;display:flex;align-items:flex-end;padding:0 clamp(24px,5vw,72px) clamp(48px,9vh,110px)}
.act.tab{min-height:58vh;align-items:center;padding-bottom:0}
.act.tab .act-inner{opacity:1}
.act-inner{flex:1 1 100%;min-width:0;width:100%;opacity:0}
.panel{max-width:560px;margin-right:auto;background:rgba(9,11,14,.82);border:1px solid var(--mon-line);border-radius:18px;
  padding:26px 28px;backdrop-filter:blur(14px)}
.panel.sm{max-width:540px;padding:26px 30px}
.panel.lg{max-width:620px;padding:30px 34px;border-color:rgba(167,139,250,.34)}
.panel.wide{max-width:900px}
.act.tab .panel{position:fixed;left:clamp(24px,5vw,72px);bottom:4vh;z-index:30;opacity:0;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease;pointer-events:none}
.act.tab .panel.show{opacity:1;transform:none;pointer-events:auto}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--signal-bright);border:1px solid rgba(167,139,250,.28);background:rgba(124,58,237,.10);padding:7px 13px;border-radius:999px;margin-bottom:20px}
.num{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--signal-bright);margin-bottom:10px}
.hero-scope h1{font-size:clamp(32px,4.1vw,54px);line-height:1.04;font-weight:800;letter-spacing:-.03em;max-width:15ch}
.hero-scope h2{font-size:clamp(24px,2.7vw,36px);line-height:1.1;font-weight:800;letter-spacing:-.024em;max-width:20ch}
.hero-scope h3{font-size:clamp(25px,2.7vw,36px);line-height:1.1;font-weight:800;letter-spacing:-.024em;max-width:19ch}
.hero-scope p.lede{margin-top:14px;font-size:clamp(15px,1.35vw,18px);line-height:1.58;color:#B9BECF;max-width:52ch}
.hero-scope p.line{margin-top:14px;font-size:clamp(15.5px,1.25vw,17.5px);line-height:1.55;color:#C2C7D6;max-width:48ch}
.cta{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.micro{margin-top:14px;font-size:12.5px;color:var(--mon-faint);display:flex;gap:16px;flex-wrap:wrap}
.micro b{color:#C6CAD8;font-weight:600}
.chips{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:12.5px;color:#C6CAD8;border:1px solid var(--mon-line);background:rgba(255,255,255,.03);border-radius:8px;padding:6px 10px}
.strip{margin-top:24px;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.strip figure{border:1px solid var(--mon-line);border-radius:12px;overflow:hidden;background:rgba(255,255,255,.03)}
.strip img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;object-position:top center;opacity:.92}
.strip figcaption{font-size:13px;font-weight:600;color:#C6CAD8;padding:10px 12px;border-top:1px solid var(--mon-line)}
.rail{position:fixed;right:clamp(14px,2.2vw,28px);top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;
  opacity:0;transition:opacity .35s;background:rgba(9,11,14,.84);border:1px solid var(--mon-line);border-radius:14px;padding:10px 14px;backdrop-filter:blur(10px)}
.rail.on{opacity:1}
.rail .r{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:12px;font-weight:600;color:var(--mon-faint);transition:color .25s}
.rail .r i{display:block;width:18px;height:2px;background:#2B313C;border-radius:2px;transition:.25s}
.rail .r.hi{color:var(--signal-bright)}
.rail .r.on{color:#fff}
.rail .r.on i{width:34px;background:var(--signal-bright)}

/* ---------- Sections claires ---------- */
.sec{padding:clamp(72px,10vw,132px) clamp(20px,5vw,40px)}
.wrap{max-width:var(--maxw);margin:0 auto}
.eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--signal);margin-bottom:16px}
.sec h2{font-size:clamp(29px,3.9vw,50px);line-height:1.08;font-weight:800;letter-spacing:-.028em;max-width:20ch}
.sec h3{font-size:clamp(20px,2vw,25px);line-height:1.2;font-weight:800;letter-spacing:-.02em}
.sec p.lede{margin-top:18px;font-size:clamp(16px,1.5vw,19px);color:var(--ink-soft);max-width:60ch}
.sec .foot{margin-top:26px;font-size:14px;color:var(--ink-faint)}

.pain{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pain-grid{margin-top:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.pain-item{border-left:2px solid var(--line);padding-left:20px}
.pain-item b{display:block;font-size:12.5px;font-weight:700;color:var(--signal);letter-spacing:.1em;margin-bottom:10px}
.pain-item p{font-size:16px;color:var(--ink-soft)}
.pain-kicker{margin-top:44px;padding:22px 24px;border-radius:var(--r-lg);background:var(--signal-wash);
  border:1px solid var(--signal-ring);font-size:clamp(17px,1.8vw,21px);font-weight:700;letter-spacing:-.015em;max-width:64ch}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow)}
.step .n{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;
  background:var(--signal-wash);color:var(--signal);font-weight:800;font-size:14px;margin-bottom:14px}
.step p{margin-top:10px;font-size:15px;color:var(--ink-soft)}

.pillar{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center;margin-top:64px}
.pillar:nth-child(even) .pillar-media{order:-1}
.pillar h3{margin-top:10px}
.pillar p{margin-top:14px;font-size:16.5px;color:var(--ink-soft)}
.pillar ul{margin-top:18px;list-style:none;display:grid;gap:9px}
.pillar li{font-size:14.5px;color:var(--ink-soft);padding-left:24px;position:relative}
.pillar li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.pillar-media{border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;padding:8px;box-shadow:var(--shadow)}
.pillar-media img{border-radius:12px}
.pillar-media figcaption{font-size:12.5px;color:var(--ink-faint);padding:11px 8px 5px}

.devices{display:flex;gap:22px;align-items:flex-end;justify-content:center;margin-top:52px;flex-wrap:wrap}
.devices img{border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}

.demo{background:var(--mon);color:var(--mon-text);border-radius:0}
.demo h2{color:#fff}
.demo p.lede{color:#B9BECF}

.cmp{margin-top:44px;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff}
.cmp table{width:100%;border-collapse:collapse;font-size:14.5px}
.cmp th,.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.cmp th{background:var(--paper-2);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.cmp td small{display:block;color:var(--ink-faint);font-size:12.5px;margin-top:3px}
.cmp tr:last-child td{border-bottom:0}
.yes{color:var(--ok);font-weight:700}
.no{color:var(--ink-faint);font-weight:700}
.part{color:var(--warn);font-weight:700}

.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
.plan{border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;padding:24px;display:flex;flex-direction:column}
.plan.hot{border-color:var(--signal-ring);box-shadow:var(--shadow)}
.plan .name{font-weight:800;font-size:17px}
.plan .tagline{font-size:12.5px;color:var(--signal);font-weight:700;margin-top:4px;min-height:18px}
.plan .price{margin-top:16px;font-size:34px;font-weight:800;letter-spacing:-.03em}
.plan .price span{font-size:14px;font-weight:600;color:var(--ink-faint)}
.plan .cap{margin-top:6px;font-size:13.5px;color:var(--ink-soft)}
.plan ul{list-style:none;margin-top:18px;display:grid;gap:9px;flex:1}
.plan li{font-size:13.5px;color:var(--ink-soft);padding-left:22px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.plan .btn{margin-top:20px;width:100%}
.founder{margin-top:22px;display:inline-flex;align-items:center;gap:10px;padding:11px 16px;border-radius:999px;
  background:var(--signal-wash);border:1px solid var(--signal-ring);font-size:13.5px;font-weight:600;color:var(--signal-deep)}

.faq{max-width:840px;margin:44px auto 0}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--signal);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:12px;font-size:15.5px;color:var(--ink-soft)}

.final{background:linear-gradient(150deg,var(--signal),#5B21B6);color:#fff;text-align:center}
.final h2{margin:0 auto;max-width:18ch;color:#fff}
.final p{margin:18px auto 0;max-width:56ch;color:#EDE9FE;font-size:17px}
.final .cta{justify-content:center;margin-top:30px}
.final .btn-1{background:#fff;color:var(--signal-deep)}
.final .btn-1:hover{background:#F5F3FF}
.final .micro{justify-content:center;color:#DDD6FE}
.final .micro b{color:#fff}

footer{background:var(--mon);color:var(--mon-faint);padding:56px clamp(20px,5vw,40px) 34px;font-size:14px}
footer .cols{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}
footer a{display:block;padding:5px 0;text-decoration:none}
footer a:hover{color:#fff}
footer .legal{max-width:var(--maxw);margin:38px auto 0;padding-top:20px;border-top:1px solid var(--mon-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px}

@media(max-width:980px){
  .pain-grid,.steps{grid-template-columns:1fr}
  .pillar{grid-template-columns:1fr;gap:26px}
  .pillar:nth-child(even) .pillar-media{order:0}
  .plans{grid-template-columns:repeat(2,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){.plans{grid-template-columns:1fr}.rail{display:none}}
@media(prefers-reduced-motion:reduce){.act-inner{opacity:1 !important}}

/* ---------- Pied de page : capture d'e-mail ---------- */
.foot-lead{max-width:var(--maxw);margin:34px auto 0;padding-top:26px;border-top:1px solid var(--mon-line);
  display:grid;grid-template-columns:1.2fr 1fr;gap:26px;align-items:start}
.foot-lead h4{margin-bottom:8px}
.foot-lead p{max-width:52ch}
.foot-lead form{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.foot-lead input[type=email]{flex:1 1 220px;padding:12px 14px;border-radius:11px;border:1px solid var(--mon-line);
  background:rgba(255,255,255,.04);color:var(--mon-text);font:inherit;font-size:14.5px}
.foot-lead input[type=email]::placeholder{color:var(--mon-faint)}
.foot-lead .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.foot-lead .msg{flex:1 1 100%;margin:0;font-size:13.5px;min-height:19px;color:var(--mon-faint)}
.foot-lead .msg.ok{color:#4ADE80}
.foot-lead .msg.err{color:#F87171}
@media(max-width:820px){.foot-lead{grid-template-columns:1fr}}

/* Sur mobile, les liens de navigation défilent au lieu de disparaître. */
@media(max-width:860px){
  .nav{gap:12px}
  .nav-links{display:flex;overflow-x:auto;scrollbar-width:none;gap:16px;font-size:13px;flex:1 1 auto}
  .nav-links::-webkit-scrollbar{display:none}
  .nav .brand span:not(.mark){display:none}
}

/* Liens de service dans la barre : lisibles sur fond sombre comme sur fond clair. */
.nav-cta > a:not(.btn){font-size:14px;font-weight:600;color:#C6CAD8;text-decoration:none}
.nav-cta > a:not(.btn):hover{color:#fff}
.nav.light .nav-cta > a:not(.btn){color:var(--ink-soft)}
.nav.light .nav-cta > a:not(.btn):hover{color:var(--ink)}
@media(max-width:640px){.nav-cta > a:not(.btn){display:none}}

/* ================= Mobile et mouvement réduit : la page s'empile ================= *
 * Le hero 3D demande three.js (687 Ko) plus quatre PNG de 500 Ko, pour un rendu qui
 * ne tient pas sur un écran de 390 px de large : l'ordinateur devient un timbre-poste
 * et la carte de texte couvre le reste. Sous 860 px, et pour qui demande moins de
 * mouvement, rien de tout ça n'est chargé : chaque acte devient une capture webp
 * légère suivie de son texte. */
.act-shot{display:none}

html.no-3d .hero-sticky{display:none}
html.no-3d .hero-acts{margin-top:0}
html.no-3d .hero-scope{padding-bottom:8px}
html.no-3d .act{min-height:0;display:block;padding:34px clamp(18px,5vw,32px) 0}
html.no-3d .act.tab{min-height:0;padding-top:10px}
html.no-3d .act-inner{opacity:1;transform:none}
html.no-3d .panel{max-width:none;margin:0;background:rgba(9,11,14,.62);backdrop-filter:none}
html.no-3d .act.tab .panel{position:static;opacity:1;transform:none;pointer-events:auto;max-width:none}
html.no-3d .rail{display:none}
html.no-3d .act-shot{display:block;margin:0 0 18px;border:1px solid var(--mon-line);border-radius:14px;
  overflow:hidden;background:#0F1216}
html.no-3d .act-shot img{width:100%;height:auto;display:block}
html.no-3d .act-shot figcaption{font-size:12px;color:var(--mon-faint);padding:9px 11px;border-top:1px solid var(--mon-line)}
html.no-3d .scrollhint{display:none}

@media(max-width:640px){
  .nav-links{display:none}
  .nav .btn{padding:9px 13px;font-size:13.5px}
  .strip{grid-template-columns:1fr}
  .pillar-media{padding:5px}
  .devices img{width:150px !important}
  .devices img:nth-child(2){width:250px !important}
  .cmp table{font-size:13px}
  .cmp th,.cmp td{padding:11px 12px}
}

/* La capture mobile est un téléphone en portrait : on la borne, sinon elle
   occupe trois écrans de haut à elle seule. */
html.no-3d .act-shot picture{display:block}
html.no-3d .act-shot img{max-height:78vh;object-fit:cover;object-position:top center}