/* =========================================================
   éteincell — feuille de style
   Palette : marine #185FA5 · ambre #EF9F27
   Type    : Sora (display) · IBM Plex Sans (texte) · IBM Plex Mono (données)
   ========================================================= */

:root{
  /* couleurs */
  --navy:#185FA5;
  --navy-600:#15528F;
  --navy-800:#103A66;
  --ink:#0E2236;
  --ink-2:#16335A;
  --steel:#2C4A6E;
  --amber:#EF9F27;
  --amber-600:#E08E12;
  --amber-100:#FCEBCB;
  --paper:#F4F7FB;
  --tint:#EEF3F9;
  --surface:#E9EFF7;
  --white:#fff;
  --text:#16263A;
  --muted:#5A6B7E;
  --line:#DCE5EF;
  --line-2:#C9D6E4;
  --on-dark:#EAF1FA;
  --on-dark-muted:#9FB2C8;

  /* type */
  --display:'Sora','Segoe UI',system-ui,sans-serif;
  --body:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;

  /* layout */
  --wrap:1160px;
  --r-sm:10px;
  --r:16px;
  --r-lg:22px;
  --r-pill:999px;

  /* ombres (teintées marine) */
  --sh-sm:0 1px 2px rgba(16,33,54,.06);
  --sh:0 10px 30px rgba(16,33,54,.09);
  --sh-lg:0 24px 64px rgba(16,33,54,.16);
}

/* ---------- base ---------- */
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; scroll-padding-top:88px; -webkit-text-size-adjust:100%; }
body{
  font-family:var(--body);
  color:var(--text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; }
ul,ol{ list-style:none; }

:focus-visible{ outline:3px solid var(--amber); outline-offset:3px; border-radius:5px; }

.wrap{ max-width:var(--wrap); margin-inline:auto; padding-inline:24px; }

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--amber); color:#14233a; font-weight:600;
  padding:.7rem 1.1rem; border-radius:0 0 10px 0; text-decoration:none;
}
.skip-link:focus{ left:0; }

/* ---------- boutons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  font-family:var(--display); font-weight:600; font-size:1rem; line-height:1;
  padding:.9rem 1.5rem; border:1.5px solid transparent; border-radius:var(--r-pill);
  text-decoration:none; cursor:pointer; white-space:nowrap;
  transition:transform .14s ease, box-shadow .22s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:active{ transform:translateY(1px); }
.btn--amber{ background:var(--amber); color:#16233a; box-shadow:0 7px 20px rgba(239,159,39,.34); }
.btn--amber:hover{ background:var(--amber-600); box-shadow:0 10px 26px rgba(239,159,39,.46); }
.btn--ghost{ background:transparent; color:var(--on-dark); border-color:rgba(234,241,250,.42); }
.btn--ghost:hover{ border-color:var(--on-dark); background:rgba(234,241,250,.09); }
.btn--sm{ padding:.62rem 1.05rem; font-size:.92rem; }
.btn--lg{ padding:1.1rem 2.1rem; font-size:1.18rem; }

/* ---------- éléments communs ---------- */
.eyebrow{
  display:flex; align-items:center; gap:.7rem;
  font-family:var(--mono); font-size:.8rem; font-weight:600;
  letter-spacing:.16em; text-transform:uppercase; color:var(--navy);
  margin-bottom:1rem;
}
.eyebrow::before{ content:''; width:24px; height:2px; background:var(--amber); }
.eyebrow--light{ color:var(--amber); }

.section{ padding:clamp(4rem,8vw,7rem) 0; }
.section--tint{ background:var(--tint); }
.section--surface{ background:var(--surface); }

.section__title{
  font-family:var(--display); font-weight:700;
  font-size:clamp(1.9rem,4.4vw,3rem); line-height:1.08; letter-spacing:-.02em;
  color:var(--ink); max-width:24ch; margin-bottom:1.1rem;
}
.section__intro{
  font-size:clamp(1.05rem,1.5vw,1.2rem); color:var(--muted);
  max-width:62ch; margin-bottom:2.6rem;
}
.prose{ max-width:64ch; }
.prose p{ font-size:1.12rem; color:var(--text); margin-bottom:1.1rem; }
.prose p:last-child{ margin-bottom:0; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(244,247,251,.85); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.site-header.scrolled{
  border-bottom-color:var(--line); box-shadow:var(--sh-sm);
  background:rgba(244,247,251,.95);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:1rem; min-height:72px; }
.brand{ display:inline-flex; align-items:center; line-height:0; }
.brand img{ height:42px; width:auto; }

.nav{ display:flex; align-items:center; gap:clamp(1.1rem,2.6vw,2.1rem); }
.nav a:not(.btn){
  position:relative; text-decoration:none; font-weight:500; font-size:.98rem;
  color:var(--muted); padding:.35rem 0; transition:color .2s ease;
}
.nav a:not(.btn):hover{ color:var(--navy); }
.nav a:not(.btn)::after{
  content:''; position:absolute; left:0; right:100%; bottom:-2px; height:2px;
  background:var(--amber); transition:right .25s ease;
}
.nav a:not(.btn):hover::after,
.nav a:not(.btn):focus-visible::after{ right:0; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:44px; height:44px; padding:0 9px; background:transparent; border:0; cursor:pointer;
}
.nav-toggle span{ height:2px; width:100%; background:var(--ink); border-radius:2px; transition:transform .25s ease, opacity .2s ease; }
.site-header.open .nav-toggle span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.site-header.open .nav-toggle span:nth-child(2){ opacity:0; }
.site-header.open .nav-toggle span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero{ position:relative; background:var(--ink); color:var(--on-dark); overflow:hidden; }
.hero__bg{ position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(1200px 520px at 78% -12%, rgba(239,159,39,.16), transparent 60%),
    radial-gradient(900px 620px at 12% 120%, rgba(24,95,165,.40), transparent 62%),
    linear-gradient(158deg,#0E2236 0%,#11294A 52%,#16335A 100%);
}
.hero__bg::after{
  content:''; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 52% 38%, #000 0%, transparent 74%);
          mask-image:radial-gradient(circle at 52% 38%, #000 0%, transparent 74%);
}
.hero__inner{
  position:relative; display:grid; grid-template-columns:1.05fr .95fr; align-items:center;
  gap:clamp(2rem,5vw,4rem);
  padding:clamp(4.5rem,9vw,7.5rem) 0 clamp(4rem,8vw,6.5rem);
}
.hero__copy{ max-width:37rem; }
.hero__title{
  font-family:var(--display); font-weight:800; color:#fff;
  font-size:clamp(2.4rem,5.6vw,4.1rem); line-height:1.04; letter-spacing:-.025em;
  margin:.4rem 0 1.3rem; text-wrap:balance;
}
.hero__lead{
  font-size:clamp(1.08rem,1.6vw,1.25rem); color:var(--on-dark-muted);
  line-height:1.65; max-width:35rem;
}
.slogan{
  margin:1.6rem 0 2rem; padding-left:1rem; border-left:3px solid var(--amber);
  font-family:var(--display); font-weight:600; font-size:1.18rem;
  color:var(--amber); letter-spacing:.01em;
}
.hero__actions{ display:flex; flex-wrap:wrap; gap:1rem; }

/* boucle (signature) */
.hero__visual{ justify-self:center; width:100%; max-width:540px; }
.loop{ width:100%; height:auto; display:block; }
.loop__label{ font-family:var(--body); font-weight:500; font-size:17px; fill:var(--on-dark); }
.loop__glow{ opacity:.16; }
.loop__arc{ stroke-dasharray:27 73; stroke-dashoffset:0; }

@media (prefers-reduced-motion: no-preference){
  .loop__arc{ animation:sweep 7s linear infinite; }
  @keyframes sweep{ to{ stroke-dashoffset:-100; } }
  .loop__glow{ transform-box:fill-box; transform-origin:center; animation:glow 4.5s ease-in-out infinite alternate; }
  @keyframes glow{ from{ opacity:.10; } to{ opacity:.24; } }
  .loop__core{ transform-box:fill-box; transform-origin:center; animation:bob 6s ease-in-out infinite alternate; }
  @keyframes bob{ from{ transform:translateY(2px); } to{ transform:translateY(-3px); } }
}

/* ---------- faits ---------- */
.facts{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:var(--r); overflow:hidden;
  margin-top:2.6rem;
}
.facts li{ background:var(--white); padding:1.4rem 1.3rem; display:flex; flex-direction:column; gap:.4rem; }
.facts__k{ font-family:var(--mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); }
.facts__v{ font-family:var(--display); font-weight:600; font-size:1.06rem; color:var(--ink); }

/* ---------- grades ---------- */
.grades{ display:grid; grid-template-columns:repeat(auto-fit,minmax(248px,1fr)); gap:1.4rem; }
.grade{
  position:relative; overflow:hidden;
  background:var(--white); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:2rem 1.8rem;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.grade::before{ content:''; position:absolute; left:0; top:0; bottom:0; width:5px; }
.grade--a::before{ background:var(--amber); }
.grade--b::before{ background:var(--navy); }
.grade--c::before{ background:var(--on-dark-muted); }
.grade:hover{ transform:translateY(-4px); box-shadow:var(--sh); border-color:var(--line-2); }
.grade__tag{
  display:inline-block; font-family:var(--mono); font-size:.78rem; font-weight:600; letter-spacing:.05em;
  padding:.36rem .72rem; border-radius:var(--r-pill); margin-bottom:1rem;
}
.grade--a .grade__tag{ background:var(--amber-100); color:var(--amber-600); }
.grade--b .grade__tag{ background:#E7F0F9; color:var(--navy); }
.grade--c .grade__tag{ background:#EEF1F5; color:var(--muted); }
.grade__title{ font-family:var(--display); font-weight:700; font-size:1.35rem; color:var(--ink); margin-bottom:.7rem; letter-spacing:-.01em; }
.grade p{ color:var(--muted); font-size:1.02rem; }

/* ---------- procédé ---------- */
.steps{ display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:1.2rem; }
.step{
  display:flex; flex-direction:column;
  background:var(--white); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:1.6rem 1.4rem 1.5rem;
  transition:transform .25s ease, box-shadow .25s ease;
}
.step:hover{ transform:translateY(-3px); box-shadow:var(--sh); }
.step__num{ font-family:var(--mono); font-weight:600; font-size:.85rem; letter-spacing:.12em; color:var(--amber-600); }
.step__art{ align-self:center; margin:.7rem 0 1.1rem; }
.step__art svg{ width:92px; height:92px; display:block; }
.step__title{ font-family:var(--display); font-weight:700; font-size:1.08rem; color:var(--ink); margin-bottom:.5rem; }
.step p{ color:var(--muted); font-size:.96rem; line-height:1.55; }

/* ---------- acteurs ---------- */
.lead-card{
  position:relative; overflow:hidden;
  background:var(--white); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:clamp(1.8rem,3.5vw,2.8rem); box-shadow:var(--sh); margin-bottom:1.4rem;
}
.lead-card::before{ content:''; position:absolute; left:0; right:0; top:0; height:5px; background:linear-gradient(90deg,var(--navy),var(--amber)); }
.lead-card__head{ display:flex; align-items:center; gap:1rem; flex-wrap:wrap; margin-bottom:1rem; }
.pill{
  font-family:var(--mono); font-size:.74rem; font-weight:600; letter-spacing:.12em; text-transform:uppercase;
  color:var(--amber-600); background:var(--amber-100); padding:.42rem .82rem; border-radius:var(--r-pill);
}
.lead-card__title{ font-family:var(--display); font-weight:700; font-size:clamp(1.4rem,3vw,1.9rem); color:var(--ink); letter-spacing:-.01em; }
.lead-card__desc{ font-size:1.12rem; color:var(--text); max-width:62ch; margin-bottom:1.8rem; }

.duo{ display:grid; grid-template-columns:1fr 1fr; gap:1.4rem; }
.duo__item{ background:var(--paper); border:1px solid var(--line); border-radius:var(--r); padding:1.3rem 1.4rem; }
.duo__k{ display:block; font-family:var(--mono); font-size:.74rem; font-weight:600; letter-spacing:.1em; text-transform:uppercase; color:var(--navy); margin-bottom:.6rem; }
.duo__item p{ color:var(--muted); font-size:1rem; }

.roles{ display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1.4rem; margin:1.4rem 0; }
.role{ background:transparent; border:1px solid var(--line); border-radius:var(--r); padding:1.5rem 1.4rem; transition:background .2s ease, border-color .2s ease, transform .2s ease; }
.role:hover{ background:var(--white); border-color:var(--line-2); transform:translateY(-2px); }
.role__title{ display:flex; align-items:center; gap:.55rem; font-family:var(--display); font-weight:600; font-size:1.12rem; color:var(--ink); margin-bottom:.5rem; }
.role__title::before{ content:''; width:8px; height:8px; border-radius:50%; background:var(--amber); flex:0 0 auto; }
.role p{ color:var(--muted); font-size:.98rem; }

.platform{
  display:flex; align-items:center; gap:1.2rem; flex-wrap:wrap; margin-top:1.6rem;
  padding:1.4rem 1.6rem; border:1px dashed var(--line-2); border-radius:var(--r);
  background:linear-gradient(180deg,var(--white),var(--paper));
}
.platform__badge{
  flex:0 0 auto; font-family:var(--mono); font-size:.74rem; font-weight:600; letter-spacing:.12em; text-transform:uppercase;
  color:#fff; background:var(--navy); padding:.46rem .86rem; border-radius:var(--r-pill);
}
.platform__text{ color:var(--text); font-size:1.05rem; }
.platform__text strong{ color:var(--ink); font-weight:700; }

/* ---------- section collecte particuliers ---------- */
.collecte-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1.4rem; margin-top:2.4rem;
}
.collecte-item{
  background:var(--white); border:1px solid var(--line);
  border-radius:var(--r); padding:1.8rem 1.6rem;
  display:flex; flex-direction:column; gap:1rem;
}
.collecte-icon{ width:52px; height:52px; flex-shrink:0; }
.collecte-icon svg{ width:100%; height:100%; }
.collecte-item__title{
  font-family:var(--display); font-weight:700;
  font-size:1.05rem; color:var(--ink); line-height:1.25;
}
.collecte-item p{ font-size:.95rem; line-height:1.65; color:var(--muted); }
.collecte-cta{ margin-top:2.4rem; display:flex; justify-content:center; }

/* ---------- parcours d'accès (page reconditionné) ---------- */
.paths{ display:grid; grid-template-columns:1fr 1fr; gap:1.4rem; margin-top:2.4rem; }
.path{
  background:var(--white); border:1px solid var(--line); border-radius:var(--r);
  padding:2rem 1.8rem; display:flex; flex-direction:column; gap:.85rem;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.path:hover{ transform:translateY(-4px); box-shadow:var(--sh); border-color:var(--line-2); }
.path__k{ font-family:var(--mono); font-size:.74rem; font-weight:600; letter-spacing:.1em; text-transform:uppercase; color:var(--navy); }
.path__title{ font-family:var(--display); font-weight:700; font-size:1.28rem; color:var(--ink); line-height:1.2; }
.path p{ color:var(--muted); font-size:1rem; line-height:1.62; flex:1; }
.path .btn{ align-self:flex-start; margin-top:.5rem; }

/* ---------- CTA ---------- */
.cta{ position:relative; overflow:hidden; background:var(--ink); color:var(--on-dark); }
.cta__bg{ position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(820px 420px at 50% -22%, rgba(239,159,39,.20), transparent 60%),
    linear-gradient(180deg,#11294A,#0E2236);
}
.cta__inner{ position:relative; padding:clamp(4rem,8vw,6.5rem) 0; display:flex; flex-direction:column; align-items:center; text-align:center; }
.cta .eyebrow{ justify-content:center; }
.cta__title{ font-family:var(--display); font-weight:800; font-size:clamp(2rem,5vw,3.2rem); color:#fff; letter-spacing:-.02em; margin-bottom:1rem; text-wrap:balance; }
.cta__lead{ font-size:1.15rem; color:var(--on-dark-muted); max-width:52ch; margin-bottom:2.2rem; line-height:1.65; }

/* ---------- footer ---------- */
.site-footer{ background:var(--paper); border-top:1px solid var(--line); padding:clamp(2.5rem,5vw,3.5rem) 0; color:var(--muted); }
.footer-inner{ display:flex; flex-direction:column; align-items:center; text-align:center; gap:.55rem; }
.footer__logo{ height:48px; width:auto; margin-bottom:.5rem; }
.footer__slogan{ font-family:var(--display); font-weight:600; color:var(--navy); font-size:1.05rem; }
.footer__meta{ font-size:.95rem; color:var(--muted); }
.footer__small{ font-size:.82rem; color:#8a98a8; margin-top:.4rem; }

/* ---------- révélation au scroll ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero__inner{ grid-template-columns:1fr; }
  .hero__visual{ justify-self:center; max-width:380px; margin-top:1.4rem; }
}

@media (max-width:1040px){
  .nav{
    position:absolute; top:100%; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--paper); border-bottom:1px solid var(--line); box-shadow:var(--sh);
    padding:.5rem 24px 1.3rem;
    transform:translateY(-12px); opacity:0; pointer-events:none;
    transition:opacity .22s ease, transform .22s ease;
  }
  .site-header.open .nav{ transform:none; opacity:1; pointer-events:auto; }
  .nav a:not(.btn){ padding:.95rem 0; border-bottom:1px solid var(--line); color:var(--text); }
  .nav a:not(.btn)::after{ display:none; }
  .nav__contact{ margin-top:1rem; justify-content:center; }
  .nav-toggle{ display:inline-flex; }
}

@media (max-width:760px){
  .facts{ grid-template-columns:1fr 1fr; }
}
@media (max-width:640px){
  .duo{ grid-template-columns:1fr; }
  .paths{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  .wrap{ padding-inline:18px; }
  .hero__actions .btn{ flex:1 1 auto; }
}
@media (max-width:440px){
  .facts{ grid-template-columns:1fr; }
}

/* ---------- mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1 !important; transform:none !important; }
}