@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:800;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-800-normal.woff2') format('woff2')}
@font-face{font-family:'Plus Jakarta Sans';font-style:italic;font-weight:400;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-400-italic.woff2') format('woff2')}
@font-face{font-family:'Plus Jakarta Sans';font-style:italic;font-weight:500;font-display:swap;src:url('/fonts/plus-jakarta-sans-latin-500-italic.woff2') format('woff2')}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0}
img{max-width:100%}
/* OB LAB — laboratoire de recherche appliquée. Grammaire WCI (« NN · TITRE », cartes, timeline) + éléments Skilltraker (navy profond, violet, cartes arrondies en dégradé, cercles translucides). Violet = OB LAB, navy = Skilltraker. */
:root{
  --violet:#6A3FD8; --violet-2:#8E6CF0; --violet-soft:rgba(106,63,216,.08); --violet-soft-2:rgba(106,63,216,.14);
  --navy:#1C2F58; --navy-2:#2B5C8F; --gold:#D9A21B;
  --bg:#FFFFFF; --bg-2:#FAFAFD; --card:#FFFFFF; --text:#3B3D4A; --title:#171A2B; --muted:#6C6F80; --line:#E7E6F0;
  --shadow:0 1px 2px rgba(23,26,43,.04),0 8px 24px rgba(23,26,43,.05);
  --grad-violet:linear-gradient(135deg,#7A3FE4 0%,#5A2FC4 100%);
  --grad-navy:linear-gradient(135deg,#17284C 0%,#2B5C8F 100%);
  --on-grad:#FFFFFF; --on-grad-muted:rgba(255,255,255,.78);
  --font:"Plus Jakarta Sans","Segoe UI","Helvetica Neue",Arial,sans-serif;
  --r:18px; --max:1140px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --violet:#A78BFA; --violet-2:#C4B2FC; --violet-soft:rgba(167,139,250,.08); --violet-soft-2:rgba(167,139,250,.15);
  --navy:#8FB4E0; --navy-2:#B5CEEE; --gold:#E8BC4A;
  --bg:#101119; --bg-2:#141522; --card:#181A27; --text:#D5D6E0; --title:#EEEEF6; --muted:#9B9DB0; --line:#272938;
  --shadow:0 1px 2px rgba(0,0,0,.3); color-scheme:dark}}
:root[data-theme="dark"]{
  --violet:#A78BFA; --violet-2:#C4B2FC; --violet-soft:rgba(167,139,250,.08); --violet-soft-2:rgba(167,139,250,.15);
  --navy:#8FB4E0; --navy-2:#B5CEEE; --gold:#E8BC4A;
  --bg:#101119; --bg-2:#141522; --card:#181A27; --text:#D5D6E0; --title:#EEEEF6; --muted:#9B9DB0; --line:#272938;
  --shadow:0 1px 2px rgba(0,0,0,.3); color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media (min-width:720px){.wrap{padding-left:max(32px,env(safe-area-inset-left,0px));padding-right:max(32px,env(safe-area-inset-right,0px))}}
h1,h2,h3{margin:0;color:var(--title);font-weight:800;letter-spacing:-.02em;text-wrap:balance}
h1{font-size:clamp(2.1rem,4.8vw,3.5rem);line-height:1.1}
h2{font-size:clamp(1.55rem,2.8vw,2.15rem);line-height:1.2}
h3{font-size:1.15rem;line-height:1.35;font-weight:700}
p{margin:0;max-width:66ch}
.kicker{font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--violet)}
.sub{font-style:italic;color:var(--muted);font-size:1.05rem}
.lead{font-size:1.1rem;color:var(--muted)}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:4px}

/* Header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo{width:44px;height:44px;border-radius:12px;display:block;box-shadow:0 4px 12px rgba(106,63,216,.25)}
.logo svg{width:44px;height:44px;display:block}
.brand-t{display:grid;line-height:1.15}
.brand-t b{font-weight:800;color:var(--title);letter-spacing:.06em}
.brand-t i{font-size:.8rem;color:var(--muted);font-weight:500}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0;font-size:.88rem;font-weight:600}
.nav ul a{text-decoration:none;color:var(--text)}
.nav ul a:hover{color:var(--violet)}
@media (max-width:900px){.nav ul{display:none}}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;font-weight:700;font-size:.92rem;text-decoration:none;border:1.5px solid var(--violet);cursor:pointer;font-family:var(--font);border-radius:12px}
.btn.primary{background:var(--grad-violet);color:#fff;border-color:transparent}
.btn.outline{background:transparent;color:var(--title);border-color:var(--line)}
.btn.outline:hover{border-color:var(--violet)}
.btn.white{background:#fff;color:#1C2F58;border-color:#fff}
.btn:hover{filter:brightness(1.05)}

/* Hero */
.hero-band{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-band::before,.hero-band::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero-band::before{width:520px;height:520px;right:-140px;top:-180px;background:radial-gradient(circle,var(--violet-soft-2),transparent 70%)}
.hero-band::after{width:380px;height:380px;left:-160px;bottom:-200px;background:radial-gradient(circle,rgba(43,92,143,.10),transparent 70%)}
.hero{position:relative;z-index:1;display:grid;gap:48px;grid-template-columns:1fr;padding-block:64px}
@media (min-width:980px){.hero{grid-template-columns:11fr 10fr;align-items:center;padding-block:96px}}
.hero-l{display:grid;gap:22px;min-width:0}
.hero h1 em{font-style:normal;background:var(--grad-violet);-webkit-background-clip:text;background-clip:text;color:transparent}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:.8rem;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--violet-soft);color:var(--violet)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}

/* Graphique courbe de l'oubli */
.figure{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);display:grid;gap:12px;min-width:0}
.fig-h{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.fig-h b{color:var(--title);font-size:.95rem}
.fig-h span{font-size:.72rem;color:var(--muted);font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.figure svg{width:100%;height:auto;display:block}
.figure svg text{font-family:var(--font);font-size:11px;fill:var(--muted)}
.figure .grid{stroke:var(--line);stroke-width:1}
.figure .c-no{stroke:var(--muted);stroke-width:2;fill:none;stroke-dasharray:5 4}
.figure .c-yes{stroke:var(--violet);stroke-width:2.5;fill:none;stroke-linejoin:round}
.figure .area{fill:var(--violet-soft)}
.figure .rev{fill:var(--violet)}
.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.8rem;color:var(--muted)}
.legend i{display:inline-block;width:18px;height:0;border-top:2.5px solid var(--violet);vertical-align:middle;margin-right:6px}
.legend i.no{border-top:2px dashed var(--muted)}
.fig-src{font-size:.74rem;font-style:italic;color:var(--muted)}

/* Bandeaux de section (grammaire WCI, version douce) */
.band-head{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band-head .wrap{padding-block:24px;display:grid;gap:2px}
.band-head h2{font-size:clamp(1.2rem,2.2vw,1.5rem);letter-spacing:.02em}
.band-head h2 span{color:var(--violet)}
.band-head .sub{font-size:.98rem}
.sec{padding-block:56px 80px}
.intro{display:grid;gap:14px;margin-bottom:40px;max-width:800px}

/* Mission */
.mission{display:grid;gap:32px;grid-template-columns:1fr;align-items:start}
@media (min-width:900px){.mission{grid-template-columns:7fr 5fr}}
.mission blockquote{margin:0;font-size:clamp(1.3rem,2.3vw,1.7rem);line-height:1.4;font-weight:600;color:var(--title);letter-spacing:-.01em;text-wrap:balance}
.mission blockquote em{font-style:normal;color:var(--violet)}
.facts{display:grid;gap:12px}
.fact{display:grid;grid-template-columns:76px 1fr;gap:14px;align-items:center;padding:16px 18px;border-radius:14px;background:var(--violet-soft)}
.fact .n{font-size:1.7rem;font-weight:800;color:var(--violet);font-variant-numeric:tabular-nums;line-height:1}
.fact p{font-size:.9rem}
.fact small{display:block;font-style:italic;color:var(--muted);font-size:.74rem}

/* Champs de recherche */
.fields{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:760px){.fields{grid-template-columns:1fr 1fr}}
.field{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:grid;gap:12px;align-content:start;box-shadow:var(--shadow)}
.ico{width:46px;height:46px;border-radius:12px;background:var(--violet-soft-2);display:grid;place-items:center}
.ico svg{width:24px;height:24px;stroke:var(--violet);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.field ul{margin:4px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.field li{font-size:.76rem;font-weight:600;padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}

/* Fondements scientifiques */
.refs{display:grid;gap:0;grid-template-columns:1fr;border-top:1px solid var(--line)}
@media (min-width:760px){.refs{grid-template-columns:1fr 1fr}}
.ref{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
@media (min-width:760px){.ref:nth-child(odd){padding-right:28px}.ref:nth-child(even){padding-left:28px;border-left:1px solid var(--line)}}
.ref .num{font-size:1.5rem;font-weight:800;color:var(--violet-2);line-height:1.1}
.ref h3{font-size:1.02rem}
.ref p{font-size:.92rem}
.ref cite{display:block;margin-top:6px;font-style:italic;font-size:.78rem;color:var(--muted)}

/* Démarche : timeline */
.timeline{list-style:none;margin:0;padding:0;display:grid;gap:24px;grid-template-columns:1fr;position:relative}
@media (min-width:900px){.timeline{grid-template-columns:repeat(5,1fr);gap:16px}
  .timeline::before{content:"";position:absolute;top:22px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,var(--violet-2),var(--violet))}}
.timeline li{display:grid;gap:12px;justify-items:start;position:relative;min-width:0}
@media (min-width:900px){.timeline li{justify-items:center;text-align:center}}
.dot{width:46px;height:46px;border-radius:50%;background:var(--bg);border:2px solid var(--violet);color:var(--violet);display:grid;place-items:center;font-weight:800;position:relative;z-index:1}
.timeline li.hl .dot{background:var(--grad-violet);color:#fff;border-color:transparent}
.tl-card{background:var(--bg-2);border-radius:14px;padding:18px;display:grid;gap:6px;width:100%}
.timeline li.hl .tl-card{background:var(--violet-soft-2)}
.tl-card p{font-size:.88rem}

/* Applications : cartes en dégradé façon app Skilltraker */
.apps{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:900px){.apps{grid-template-columns:3fr 2fr}}
.gcard{position:relative;overflow:hidden;border-radius:22px;padding:32px;color:var(--on-grad);display:grid;gap:16px;align-content:start;min-width:0}
.gcard::before,.gcard::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08);pointer-events:none}
.gcard::before{width:240px;height:240px;right:-80px;top:-90px}
.gcard::after{width:160px;height:160px;left:-70px;bottom:-80px}
.gcard > *{position:relative;z-index:1}
.gcard.navy{background:var(--grad-navy)}
.gcard.violet{background:var(--grad-violet)}
.gcard h3{color:#fff;font-size:1.6rem}
.gcard p{color:var(--on-grad-muted)}
.gcard .tag{justify-self:start;font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff}
.st-logo{display:flex;align-items:center;gap:12px}
.st-mark{width:48px;height:48px;border-radius:12px;background:linear-gradient(160deg,#2B5C8F,#17284C);border:1px solid rgba(255,255,255,.25);display:grid;place-items:center;font-weight:800;font-size:1.5rem;color:#fff}
.st-logo b{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;color:#fff}
.gcard ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.gcard li{display:grid;grid-template-columns:22px 1fr;gap:10px;font-size:.93rem;color:var(--on-grad-muted)}
.gcard li b{color:#fff}
.gcard li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--gold);margin-top:9px}
.tiers{display:flex;flex-wrap:wrap;gap:8px}
.tiers span{font-size:.74rem;font-weight:600;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.12);color:#fff}
.gcard .links{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.btn.ghost-w{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.domains{display:grid;gap:8px}
.domains span{padding:10px 14px;border-radius:12px;background:rgba(255,255,255,.12);font-size:.9rem;font-weight:600;color:#fff}

/* Pour qui */
.cols3{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:760px){.cols3{grid-template-columns:repeat(3,1fr)}}
.c3{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--violet-2);border-radius:var(--r);padding:26px;display:grid;gap:10px;align-content:start;box-shadow:var(--shadow)}
.c3 .ghost{font-size:2.4rem;font-weight:800;color:var(--violet-soft-2);line-height:1}
.c3 p{font-size:.93rem}

/* Équipe */
.team{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:760px){.team{grid-template-columns:1fr 1fr}}
.person{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:grid;gap:14px;grid-template-columns:56px 1fr;align-items:start;box-shadow:var(--shadow)}
.ini{width:56px;height:56px;border-radius:14px;background:var(--violet-soft-2);color:var(--violet);display:grid;place-items:center;font-weight:800;font-size:1.1rem}
.person .role{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--violet)}
.person p{grid-column:1/-1;font-size:.95rem}
.ph{width:88px;height:88px;border-radius:20px;object-fit:cover;display:block;max-width:100%;box-shadow:0 0 0 3px var(--violet-soft-2)}
.person{grid-template-columns:88px 1fr;align-items:center}
.li{grid-column:1/-1;justify-self:start;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:10px;border:1px solid var(--line);font-size:.85rem;font-weight:700;color:var(--title);text-decoration:none}
.li svg{width:16px;height:16px;color:#0A66C2}
.li:hover{border-color:var(--violet)}


/* Clôture */
.close .wrap{padding-block:72px}
.close-card{position:relative;overflow:hidden;border-radius:26px;background:var(--grad-violet);color:#fff;padding:40px 28px;display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:900px){.close-card{grid-template-columns:1fr 1fr;padding:56px;gap:56px}}
.close-card::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.08);right:-120px;top:-140px}
.close-card > *{position:relative;z-index:1}
.close-card h2{color:#fff}
.close-card .kicker{color:rgba(255,255,255,.8)}
.close-card p{color:rgba(255,255,255,.85)}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.steps li{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start}
.steps li span{width:36px;height:36px;border-radius:50%;background:#fff;color:#5A2FC4;display:grid;place-items:center;font-weight:800;font-size:.9rem}
.steps li b{color:#fff}
.mailbox{background:rgba(255,255,255,.12);border-radius:14px;padding:16px 18px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}
.mailbox code{font-family:var(--font);font-weight:700;font-size:1.05rem;color:#fff;user-select:all}
#copy-msg{font-size:.82rem;color:#fff;min-height:1.2em}

footer{border-top:1px solid var(--line)}
footer .wrap{padding-block:24px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:.8rem;color:var(--muted)}

@media (prefers-reduced-motion:no-preference){
  .c-yes{stroke-dasharray:1400;animation:draw 2.4s ease-out both}
  @keyframes draw{from{stroke-dashoffset:1400}to{stroke-dashoffset:0}}
}
/* Pages légales */
.legal{padding-block:56px 80px;display:grid;gap:36px;max-width:820px}
.legal section{display:grid;gap:10px}
.legal h2{font-size:1.3rem}
.legal p{font-size:.97rem}
.legal a{color:var(--violet)}
footer a{color:inherit}