/* Carbon Dejar - design tokens (charte graphique) */
:root{
  --g900:#0F3D2E; --g700:#174B3A; --g500:#2E6B4E;
  --bg:#F7F5F1; --surface:#FFFFFF; --sand:#EAE6DF;
  --ink:#1E1E1E; --muted:#4F5753; --line:#D9D4CA;
  --gold:#C8A96A;
  --accent:#174B3A; --accent-ink:#F7F5F1; --accent-hover:#0F3D2E;
  --focus:#2E6B4E;
  --r:10px;
  --serif:'Playfair Display',Georgia,serif;
  --sans:'Inter',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --ease:cubic-bezier(.16,1,.3,1);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0E1B16; --surface:#14261F; --sand:#183027;
    --ink:#EEEBE4; --muted:#B4BDB7; --line:#27403A;
    --accent:#C8A96A; --accent-ink:#0F2A20; --accent-hover:#D8BC82; --focus:#C8A96A;
  }
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:1rem;line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
.wrap{max-width:1240px;margin-inline:auto;padding-inline:24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 14px;border-radius:var(--r);z-index:100}
.skip:focus{left:8px}

h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.015em;line-height:1.12}
h1{font-size:clamp(2.2rem,4.6vw,3.9rem)}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem)}
h3{font-size:1.35rem}
p{max-width:65ch}
.lead{font-size:1.125rem;color:var(--muted);max-width:56ch}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{font-family:var(--mono);font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.rule{display:block;width:56px;height:1px;background:var(--gold);margin:22px 0}

/* nav */
.nav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--serif);font-size:1.3rem;white-space:nowrap}
.brand svg{width:28px;height:28px;color:var(--g700)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand svg{color:var(--gold)}}
.links{display:flex;align-items:center;gap:26px;list-style:none;padding:0}
.links a{text-decoration:none;font-size:.92rem;color:var(--muted);padding:6px 0;border-bottom:1px solid transparent;transition:color .25s var(--ease),border-color .25s var(--ease)}
.links a:hover,.links a[aria-current="page"]{color:var(--ink);border-color:var(--gold)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:var(--r);width:42px;height:42px;font-size:1.3rem;color:var(--ink);cursor:pointer}

/* buttons: one radius system (10px) */
.btn{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;text-decoration:none;font:500 .95rem var(--sans);padding:13px 22px;border-radius:var(--r);border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);cursor:pointer;transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease)}
.btn:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--bg)}
.btn.sm{padding:9px 16px;font-size:.88rem}

/* hero */
.hero{padding:56px 0 72px}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;min-height:calc(100dvh - 68px - 120px)}
.hero h1{max-width:15ch}
.hero .lead{margin-top:22px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.mark-panel{position:relative;aspect-ratio:4/5;background:var(--g900);border-radius:var(--r);overflow:hidden;display:grid;place-items:center;color:var(--bg)}
.mark-panel::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 70% 25%,rgba(46,107,78,.55),transparent 70%)}
.mark-panel svg.big{position:relative;width:46%;height:auto;color:var(--bg)}
.mark-panel .net{position:absolute;inset:0;width:100%;height:100%;color:var(--bg);opacity:.14}
.mark-panel p{position:absolute;left:26px;bottom:24px;right:26px;font-family:var(--serif);font-size:1.5rem;line-height:1.2;color:var(--bg)}
.mark-panel p::before{content:"";display:block;width:40px;height:1px;background:var(--gold);margin-bottom:14px}

/* sections */
section{padding:96px 0}
.sec-head{margin-bottom:48px}
.sec-head p{margin-top:16px}
.band{background:var(--sand)}

/* problem statement */
.statement{display:grid;grid-template-columns:2fr 1fr;gap:56px;align-items:end}
.statement h2{max-width:20ch}
.statement .big{font-family:var(--serif);font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.3;margin-top:22px;max-width:36ch}
.statement .pull{padding-left:24px;border-left:1px solid var(--gold);color:var(--muted)}

/* steps: network motif */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:0;right:0;top:15px;height:1px;background:var(--line)}
.step{position:relative;padding:0 28px 0 0}
.step .node{width:31px;height:31px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font:500 .8rem var(--mono);position:relative;z-index:1;transition:transform .4s var(--ease)}
.step:hover .node{transform:scale(1.15)}
.step h3{margin:22px 0 8px;font-size:1.3rem}
.step p{color:var(--muted);font-size:.95rem}
.step.verif .node{background:var(--gold);color:#1E1E1E}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0}
.chips li{border:1px solid var(--line);border-radius:var(--r);padding:10px 18px;background:var(--surface);font-size:.95rem}
.split{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:center}

/* bento sectors */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.cell{border-radius:var(--r);padding:32px;display:flex;flex-direction:column;gap:14px;min-height:260px;border:1px solid var(--line);background:var(--surface);transition:transform .4s var(--ease)}
.cell:hover{transform:translateY(-4px)}
.cell i{font-size:1.9rem;color:var(--g500)}
.cell p{color:var(--muted);font-size:.97rem}
.cell.c1{grid-column:span 4;background:var(--g900);color:#F7F5F1;border-color:var(--g900)}
.cell.c1 p{color:#D5DDD8}.cell.c1 i{color:var(--gold)}
.cell.c2{grid-column:span 2}
.cell.c3{grid-column:span 2;background:var(--sand)}
.cell.c4{grid-column:span 4;background:var(--g500);color:#fff;border-color:var(--g500)}
.cell.c4 p{color:#EAF1ED}.cell.c4 i{color:#fff}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .cell.c1{background:var(--g700);border-color:var(--g700)}
  :root:not([data-theme="light"]) .cell.c4{background:#1F4A38;border-color:#1F4A38}
}
.extra{margin-top:28px;display:flex;gap:28px;flex-wrap:wrap;color:var(--muted);font-size:.95rem}

/* trust */
.trust{padding:56px 0;text-align:left}
.trust p{font-family:var(--serif);font-size:clamp(1.3rem,2.2vw,1.8rem);line-height:1.3;max-width:34ch}

/* CTA band */
.cta{background:var(--sand)}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta h2{max-width:22ch}

/* calendar tiles */
.years{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;align-items:end}
.year{padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.year .y{font-family:var(--mono);font-size:.85rem;color:var(--muted)}
.year .p{font-family:var(--serif);font-size:2.2rem;line-height:1.1;margin-top:8px}
.year:nth-child(2){margin-bottom:12px}.year:nth-child(3){margin-bottom:24px}.year:nth-child(4){margin-bottom:36px}.year:nth-child(5){margin-bottom:48px;background:var(--g900);color:#F7F5F1;border-color:var(--g900)}
.year:nth-child(5) .y{color:#C8D3CD}
.note{margin-top:28px;padding-left:20px;border-left:1px solid var(--gold);color:var(--muted);font-size:.95rem}

/* scopes */
.scopes{display:grid;grid-template-columns:1fr 1fr;gap:0}
.scope{padding:40px 40px 40px 0}
.scope+.scope{padding:40px 0 40px 40px;border-left:1px solid var(--line)}
.scope .tag{font-family:var(--mono);font-size:.8rem;color:var(--g500);margin-bottom:10px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .scope .tag{color:var(--gold)}}

/* faq */
details{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:22px 0;font-family:var(--serif);font-size:1.25rem;display:flex;justify-content:space-between;gap:20px;align-items:center}
summary::-webkit-details-marker{display:none}
summary i{transition:transform .35s var(--ease);flex:none}
details[open] summary i{transform:rotate(45deg)}
details p{padding:0 0 24px;color:var(--muted)}

/* sources */
.srcs{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.src{padding:26px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);display:flex;flex-direction:column;gap:8px}
.src .ref{font-family:var(--mono);font-size:.82rem;color:var(--g500)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .src .ref{color:var(--gold)}}
.src p{color:var(--muted);font-size:.95rem}
.callout{display:flex;gap:18px;align-items:flex-start;padding:28px;border-radius:var(--r);background:var(--g900);color:#F7F5F1}
.callout i{font-size:1.8rem;color:var(--gold);flex:none}
.callout p{color:#DCE4DF}
.disclaimer{font-size:.9rem;color:var(--muted);margin-top:28px;max-width:70ch}

/* team */
.team{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:16px}
.person{padding:30px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface)}
.person:first-child{background:var(--g900);color:#F7F5F1;border-color:var(--g900)}
.person:first-child .role{color:#C8D3CD}
.avatar{width:56px;height:56px;border-radius:50%;border:1px solid var(--gold);display:grid;place-items:center;font-family:var(--serif);font-size:1.2rem;margin-bottom:20px;color:var(--gold)}
.person .role{color:var(--muted);font-size:.93rem;margin-top:6px}

/* forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
label,legend{font-size:.9rem;font-weight:500}
input,select,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid #8A918D;border-radius:var(--r);padding:12px 14px;width:100%}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--focus)}
.help{font-size:.85rem;color:var(--muted)}
.err{font-size:.85rem;color:#A3261C;display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .err{color:#F2A29A}}
.field.bad input,.field.bad select{border-color:#A3261C}
.field.bad .err{display:block}
.radios{display:flex;gap:12px}
.radios label{display:flex;gap:8px;align-items:center;border:1px solid #8A918D;border-radius:var(--r);padding:11px 18px;cursor:pointer;background:var(--surface);font-weight:400}
.radios input{width:auto;accent-color:var(--accent)}
.form-card{padding:40px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.reassure{font-size:.88rem;color:var(--muted);margin-top:16px}
.success{display:none;padding:28px;border-radius:var(--r);background:var(--sand)}
.success.on{display:block}
.success h3{margin-bottom:8px}
.btn[disabled]{opacity:.65;cursor:progress}

.page-hero{padding:72px 0 40px}
.page-hero h1{max-width:20ch}
.page-hero .lead{margin-top:20px}
.two{display:grid;grid-template-columns:1fr 1.2fr;gap:64px;align-items:start}
.gain{list-style:none;padding:0;display:grid;gap:18px}
.gain li{display:flex;gap:14px;align-items:flex-start}
.gain i{color:var(--g500);font-size:1.4rem;margin-top:2px;flex:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .gain i{color:var(--gold)}}

/* footer */
footer{background:var(--g900);color:#DCE4DF;padding:64px 0 32px;margin-top:0}
footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
footer .brand{color:#F7F5F1}.footer .brand svg,footer .brand svg{color:#F7F5F1}
footer h4{font:500 .8rem var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
footer ul{list-style:none;padding:0;display:grid;gap:8px}
footer a{text-decoration:none;color:#DCE4DF}footer a:hover{color:#fff;text-decoration:underline}
footer .small{margin-top:48px;padding-top:24px;border-top:1px solid rgba(247,245,241,.15);font-size:.85rem;color:#B9C6BF;max-width:none}

/* reveal */
@media (prefers-reduced-motion:no-preference){
  .rv{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--i,0)*80ms)}
  .rv.in{opacity:1;transform:none}
  .net line{stroke-dasharray:400;stroke-dashoffset:400;animation:draw 2.2s var(--ease) .3s forwards}
  @keyframes draw{to{stroke-dashoffset:0}}
  .steps::before{transform-origin:left;transform:scaleX(0);transition:transform 1.4s var(--ease)}
  .steps.in::before{transform:scaleX(1)}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

/* responsive */
@media (max-width:1023px){
  .links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;padding:20px 24px 28px;gap:16px;border-bottom:1px solid var(--line)}
  .links.open{display:flex}
  .burger{display:block}
  .nav .btn.desk{display:none}
}
@media (max-width:767px){
  .wrap{padding-inline:16px}
  section{padding:64px 0}
  .hero{padding:32px 0 48px}
  .hero .grid,.statement,.split,.two,.scopes,.srcs,.team,footer .top,.form-grid{grid-template-columns:1fr;gap:32px}
  .hero .grid{min-height:0}
  .mark-panel{aspect-ratio:4/3}
  .steps{grid-template-columns:1fr;gap:32px}
  .steps::before{left:15px;right:auto;top:0;bottom:0;width:1px;height:auto}
  .step{padding:0 0 0 56px}.step .node{position:absolute;left:0;top:0}.step h3{margin-top:0}
  .bento{grid-template-columns:1fr}
  .cell.c1,.cell.c2,.cell.c3,.cell.c4{grid-column:auto;min-height:0}
  .years{grid-template-columns:1fr 1fr}
  .year:nth-child(n){margin-bottom:0}
  .scope,.scope+.scope{padding:28px 0;border-left:0}
  .scope+.scope{border-top:1px solid var(--line)}
  .form-card{padding:24px}
  .cta .wrap{flex-direction:column;align-items:flex-start}
  .btn{white-space:normal}
}

[hidden]{display:none!important}
.links .mob{display:none}
@media (max-width:1023px){.links .mob{display:block}}
.send-error{margin-top:14px}

/* equipe : cartes identiques */
.team{grid-template-columns:repeat(2,minmax(0,1fr));max-width:820px}
.person:first-child{background:var(--surface);color:var(--ink);border-color:var(--line)}
.person:first-child .role{color:var(--muted)}
.social{display:flex;gap:10px;margin-top:20px}
.social a{width:42px;height:42px;border:1px solid rgba(247,245,241,.3);border-radius:var(--r);display:grid;place-items:center;font-size:1.25rem;transition:background .3s var(--ease),transform .3s var(--ease)}
.social a:hover{background:rgba(247,245,241,.12);transform:translateY(-2px);text-decoration:none}
@media (max-width:767px){.team{grid-template-columns:1fr}}