:root{
  --forest:#14291F;
  --forest-deep:#0D1A13;
  --green:#1E9B5B;
  --green-soft:#2FB56D;
  --chartreuse:#DCDF8B;
  --paper:#F4F6F0;
  --paper-warm:#EAEDE2;
  --ink:#1B2620;
  --muted:#5E6D63;
  --line:rgba(20,41,31,.14);
  --line-dark:rgba(220,223,139,.20);
  --display:"Cormorant Garamond",Georgia,serif;
  --body:"Archivo","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:16.5px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
img{max-width:100%;display:block}
a{color:inherit}

/* ---------- utility type ---------- */
.eyebrow{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--green);margin:0 0 18px;
}
.eyebrow.on-dark{color:var(--chartreuse)}
h1,h2,h3{font-family:var(--display);font-weight:500;letter-spacing:.005em;margin:0}
h2{font-size:clamp(2rem,4vw,3.1rem);line-height:1.08}
h3{font-size:1.45rem;line-height:1.2}
p{margin:0 0 1.1em}
.lede{font-size:1.12rem;color:var(--muted);max-width:60ch}
section{padding:104px 0;border-top:1px solid var(--line)}
section.dark{background:var(--forest);color:var(--paper);border-top:none}
section.dark .lede{color:rgba(244,246,240,.66)}

/* ---------- nav ---------- */
header{
  position:sticky;top:0;z-index:60;background:rgba(244,246,240,.88);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{height:46px;width:auto}
.brand span{
  font-family:var(--display);font-size:1.05rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--forest);line-height:1.1;max-width:150px;
}
.nav ul{display:flex;gap:32px;list-style:none;margin:0;padding:0}
.nav a{
  text-decoration:none;font-size:13.5px;letter-spacing:.04em;color:var(--muted);
  padding-bottom:3px;border-bottom:1px solid transparent;transition:.2s;
}
.nav a:hover,.nav a:focus-visible{color:var(--forest);border-color:var(--green)}
.nav-cta{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  background:var(--forest);color:var(--paper)!important;padding:11px 20px;border:none!important;
}
.nav-cta:hover{background:var(--green)}
.menu-btn{display:none;background:none;border:1px solid var(--line);padding:9px 13px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer}

/* ---------- hero ---------- */
.hero{
  background:var(--forest);color:var(--paper);position:relative;overflow:hidden;
  padding:118px 0 96px;border-top:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{
  font-size:clamp(2.7rem,5.4vw,4.5rem);line-height:1.03;color:var(--paper);
  margin:0 0 26px;
}
.hero h1 em{font-style:normal;color:var(--chartreuse)}
.hero p{color:rgba(244,246,240,.72);max-width:48ch;font-size:1.1rem}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-block;text-decoration:none;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.1em;text-transform:uppercase;padding:15px 26px;transition:.2s;
}
.btn-primary{background:var(--chartreuse);color:var(--forest-deep)}
.btn-primary:hover{background:var(--green);color:var(--paper)}
.btn-ghost{border:1px solid var(--line-dark);color:var(--paper)}
.btn-ghost:hover{border-color:var(--chartreuse);color:var(--chartreuse)}

/* ---------- signature: champ d'écoulement ---------- */
.field{width:100%;height:auto}
.stream{fill:none;stroke:var(--green-soft);stroke-width:1.1;opacity:.75;
  stroke-dasharray:7 11;animation:flow 3.4s linear infinite}
.stream.alt{stroke:var(--chartreuse);opacity:.55;animation-duration:4.6s}
@keyframes flow{to{stroke-dashoffset:-72}}
.contour{fill:none;stroke:rgba(220,223,139,.22);stroke-width:.7}
.blade{fill:rgba(30,155,91,.16);stroke:var(--chartreuse);stroke-width:1.4}
.probe{fill:var(--chartreuse)}
.probe-ring{fill:none;stroke:var(--chartreuse);stroke-width:1;opacity:.5;
  animation:pulse 2.8s ease-out infinite}
@keyframes pulse{0%{r:5;opacity:.6}100%{r:26;opacity:0}}

/* ---------- bandeau capacités ---------- */
.strip{background:var(--forest-deep);color:rgba(244,246,240,.62);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;
  padding:16px 0;border-top:1px solid var(--line-dark)}
.strip .wrap{display:flex;gap:34px;flex-wrap:wrap;justify-content:space-between}
.strip b{color:var(--chartreuse);font-weight:500}

/* ---------- sections génériques ---------- */
.head{max-width:64ch;margin-bottom:56px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
.cell{background:var(--paper);padding:34px 30px}
.cell .num{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--green);
  display:block;margin-bottom:16px}
.cell h3{margin-bottom:12px}
.cell p{font-size:.95rem;color:var(--muted);margin:0}
.cell ul{margin:14px 0 0;padding-left:17px;font-size:.9rem;color:var(--muted)}
.cell li{margin-bottom:6px}

/* ---------- portfolio ---------- */
.study{
  display:grid;grid-template-columns:200px 1fr 240px;gap:40px;
  padding:38px 0;border-top:1px solid var(--line);align-items:start;
}
.study:last-of-type{border-bottom:1px solid var(--line)}
.study .tag{font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--green)}
.study h3{margin-bottom:10px}
.study p{font-size:.96rem;color:var(--muted);margin:0}
.meta{font-family:var(--mono);font-size:11.5px;line-height:1.9;color:var(--muted)}
.meta span{color:var(--forest);display:inline-block;min-width:74px}
.result{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:12px;color:var(--forest);letter-spacing:.02em;
}
.result b{color:var(--green);font-weight:500}

/* ---------- méthode (séquence réelle) ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line-dark);margin-top:52px}
.step{background:var(--forest);padding:28px 22px}
.step .n{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--chartreuse);display:block;margin-bottom:14px}
.step h3{font-size:1.15rem;color:var(--paper);margin-bottom:8px}
.step p{font-size:.87rem;color:rgba(244,246,240,.6);margin:0}

/* ---------- outils ---------- */
.tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.tool{font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  border:1px solid var(--line);padding:9px 15px;color:var(--muted)}

/* ---------- à propos ---------- */
.about{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:start}
.creds{list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:12.5px}
.creds li{padding:14px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px}
.creds li span:last-child{color:var(--muted);text-align:right}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.field-row{display:flex;flex-direction:column;margin-bottom:18px}
label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--chartreuse);margin-bottom:8px}
input,textarea{
  background:transparent;border:none;border-bottom:1px solid var(--line-dark);
  color:var(--paper);font-family:var(--body);font-size:15px;padding:10px 0;
}
input:focus,textarea:focus{outline:none;border-color:var(--chartreuse)}
textarea{resize:vertical;min-height:90px}
.contact-info{font-family:var(--mono);font-size:13px;line-height:2.1;color:rgba(244,246,240,.7)}
.contact-info a{color:var(--chartreuse)}

footer{background:var(--forest-deep);color:rgba(244,246,240,.5);padding:38px 0;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* ---------- secteurs ---------- */
.sectors{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
.sector{background:var(--paper);padding:32px 28px;transition:background .25s}
.sector:hover{background:var(--paper-warm)}
.sector h3{font-size:1.28rem;margin-bottom:10px}
.sector p{font-size:.93rem;color:var(--muted);margin:0}

/* ---------- distance ---------- */
.remote{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.flow{list-style:none;margin:0;padding:0}
.flow li{padding:18px 0;border-bottom:1px solid var(--line);display:grid;
  grid-template-columns:78px 1fr;gap:18px;align-items:baseline}
.flow .k{font-family:var(--mono);font-size:11px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--green)}
.flow p{margin:0;font-size:.95rem;color:var(--muted)}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);margin-top:8px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:20px 0;font-family:var(--display);
  font-size:1.2rem;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:15px;color:var(--green)}
.faq details[open] summary::after{content:"–"}
.faq details p{font-size:.95rem;color:var(--muted);margin:0 0 22px;max-width:70ch}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

:focus-visible{outline:2px solid var(--green);outline-offset:3px}

@media (max-width:960px){
  .hero-grid,.about,.contact{grid-template-columns:1fr;gap:44px}
  .grid-3,.sectors{grid-template-columns:1fr}
  .remote{grid-template-columns:1fr;gap:44px}
  .steps{grid-template-columns:1fr 1fr}
  .study{grid-template-columns:1fr;gap:16px}
  .nav ul{display:none}
  .menu-btn{display:block}
  .nav ul.open{display:flex;position:absolute;top:76px;left:0;right:0;background:var(--paper);
    flex-direction:column;gap:0;padding:12px 28px 20px;border-bottom:1px solid var(--line)}
  .nav ul.open li{padding:11px 0}
  section{padding:76px 0}
}
@media (max-width:600px){
  .steps{grid-template-columns:1fr}
  .brand span{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ================= PAGES INTERNES ================= */
.nav a.active{color:var(--forest);border-color:var(--green)}

.pagehead{background:var(--forest);color:var(--paper);padding:96px 0 76px}
.pagehead h1{font-family:var(--display);font-weight:500;color:var(--paper);
  font-size:clamp(2.3rem,4.8vw,3.7rem);line-height:1.05;margin:0;max-width:19ch}
.pagehead p{color:rgba(244,246,240,.72);max-width:60ch;margin:22px 0 0;font-size:1.08rem}

section.tight,section.wide{padding:84px 0;border-top:none}
section.tight .wrap{max-width:1180px}

/* cartes cliquables de l'accueil */
.link-cell{text-decoration:none;color:inherit;display:block;transition:background .25s}
.link-cell:hover{background:var(--paper-warm)}
.link-cell h3{transition:color .2s}
.link-cell:hover h3{color:var(--green)}
.link-cell::after{content:"→";font-family:var(--mono);font-size:15px;color:var(--green);
  display:block;margin-top:18px}

/* bandeau de navigation en bas de page */
.nextup{background:var(--paper-warm);padding:64px 0;border-top:1px solid var(--line)}
.next-links{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line)}
.next-links a{background:var(--paper);padding:28px 26px;text-decoration:none;color:inherit;
  display:block;transition:background .25s}
.next-links a:hover{background:#fff}
.next-links span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--green);margin-bottom:10px}

/* contenu rédactionnel (carrières, mentions légales) */
.prose{max-width:800px;margin:0 auto;padding:0 28px}
.prose h2{font-size:1.95rem;margin:60px 0 16px}
.prose h3{font-size:1.3rem;margin:34px 0 10px}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{padding-left:19px}
.prose li{margin-bottom:8px}
.prose table{width:100%;border-collapse:collapse;font-size:.94rem;margin:20px 0}
.prose td,.prose th{border-bottom:1px solid var(--line);padding:13px 0;text-align:left;vertical-align:top}
.prose th{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--green);font-weight:500;width:150px;padding-right:20px}
.card{border:1px solid var(--line);background:#fff;padding:32px 30px;margin:26px 0}
.card .tag{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--green);display:block;margin-bottom:12px}
.card .meta{font-family:var(--mono);font-size:12px;color:var(--muted);
  border-top:1px solid var(--line);margin-top:22px;padding-top:16px;line-height:2}
.card .meta b{color:var(--forest);font-weight:500}
.note{background:var(--paper-warm);border-left:3px solid var(--green);
  padding:20px 24px;margin:30px 0;font-size:.96rem}

@media(max-width:960px){
  .next-links{grid-template-columns:1fr}
  section.tight,section.wide{padding:64px 0}
  .pagehead{padding:64px 0 52px}
}