body{margin:0}
img{max-width:100%}

/* Layout: page de communauté en une colonne large; bandes inclinées reprenant les rubans du logo; le continuum des données sert de fil conducteur. */
:root{
  --bg:#F4F7FC; --surface:#FFFFFF; --ink:#0B1F3A; --muted:#4A5B76; --line:#D7E0EE;
  --accent:#1649C8; --accent-2:#246BFD; --azure:#4CA7FF; --cyan:#22D3EE; --lys:#003DA5;
  --on-accent:#FFFFFF; --tint:#E7EFFD;
  --f-display:"Schibsted Grotesk","Segoe UI",system-ui,sans-serif;
  --f-body:"Source Sans 3","Segoe UI",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#07142A; --surface:#0C1E3B; --ink:#E6EEFA; --muted:#9EB1CF; --line:#1C3459;
  --accent:#4CA7FF; --accent-2:#6CB6FF; --azure:#4CA7FF; --cyan:#22D3EE; --lys:#5C8DE6;
  --on-accent:#07142A; --tint:#102A50; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#07142A; --surface:#0C1E3B; --ink:#E6EEFA; --muted:#9EB1CF; --line:#1C3459;
  --accent:#4CA7FF; --accent-2:#6CB6FF; --azure:#4CA7FF; --cyan:#22D3EE; --lys:#5C8DE6;
  --on-accent:#07142A; --tint:#102A50; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;padding-inline:16px}
.wrap{max-width:var(--wrap);margin-inline:auto}
a{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-family:var(--f-display);line-height:1.1;text-wrap:balance;margin:0}
h2{font-size:clamp(1.8rem,3.6vw,2.6rem);font-weight:800;letter-spacing:-.02em}
h3{font-size:1.2rem;font-weight:700}
p{margin:0}
.eyebrow{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.lede{color:var(--muted);max-width:62ch;font-size:1.08rem}

/* Nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);margin-inline:-16px;padding-inline:16px}
.nav .wrap{display:flex;align-items:center;gap:20px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--f-display);font-weight:800;font-size:1rem;white-space:nowrap}
.brand img{height:30px;width:auto}
.nav ul{display:flex;gap:18px;list-style:none;margin:0 0 0 auto;padding:0;flex-wrap:wrap}
.nav ul a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem}
.nav ul a:hover{color:var(--ink)}
@media (max-width:860px){.nav ul{display:none}}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;text-decoration:none;border:2px solid var(--accent);transition:transform .15s ease,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-ghost{color:var(--accent);background:transparent}
.nav .btn{padding:8px 16px;font-size:.92rem;margin-left:auto}
@media (min-width:861px){.nav .btn{margin-left:0}}

/* Hero */
.hero{position:relative;padding-block:72px 56px;overflow:hidden;margin-inline:-16px;padding-inline:16px}
.hero .wrap{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(2.6rem,6.4vw,4.9rem);font-weight:800;letter-spacing:-.035em}
.hero h1 .ia{color:var(--accent)}
.hero h1 .qc{display:block;color:var(--lys)}
.hero .lede{margin-top:22px;font-size:1.2rem}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero-logo{justify-self:center;width:100%;max-width:400px}
.hero-logo img{width:100%;height:auto;filter:drop-shadow(0 20px 40px color-mix(in srgb,var(--accent-2) 25%,transparent))}
.ribbons{position:absolute;inset:auto -10% -60px auto;width:70%;height:220px;z-index:0;pointer-events:none;opacity:.14}
.ribbons span{position:absolute;right:0;height:56px;width:100%;border-radius:18px;transform:skewX(-18deg)}
.ribbons span:nth-child(1){top:0;background:var(--cyan)}
.ribbons span:nth-child(2){top:70px;right:6%;background:var(--accent-2)}
.ribbons span:nth-child(3){top:140px;right:12%;background:var(--accent)}
.stats{display:flex;gap:36px;flex-wrap:wrap;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.stat b{display:block;font-family:var(--f-display);font-size:2rem;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{color:var(--muted);font-size:.92rem}
@media (max-width:820px){.hero .wrap{grid-template-columns:1fr}.hero-logo{order:-1;max-width:220px;justify-self:start}.hero{padding-block:40px}}

/* Sections */
section{padding-block:72px;border-top:1px solid var(--line)}
.sec-head{display:grid;gap:14px;margin-bottom:40px}

/* Continuum */
.flow{display:flex;flex-wrap:wrap;gap:0;margin-top:8px;list-style:none;padding:0}
.flow li{position:relative;padding:14px 26px 14px 30px;font-family:var(--f-mono);font-size:.85rem;color:var(--ink);background:var(--tint);clip-path:polygon(0 0,calc(100% - 14px) 0,100% 50%,calc(100% - 14px) 100%,0 100%,14px 50%);margin-right:-6px;margin-bottom:8px}
.flow li:first-child{clip-path:polygon(0 0,calc(100% - 14px) 0,100% 50%,calc(100% - 14px) 100%,0 100%);padding-left:18px}
.flow li.ai{background:var(--accent);color:var(--on-accent)}
.flow li.dec{background:var(--ink);color:var(--bg)}
.mission{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.mission blockquote{margin:0;font-family:var(--f-display);font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700;line-height:1.25;letter-spacing:-.01em;border-left:4px solid var(--lys);padding-left:22px}
.mission p+p{margin-top:14px}
@media (max-width:820px){.mission{grid-template-columns:1fr;gap:28px}}

/* Parcours */
.tracks{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.track{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;gap:12px;align-content:start;min-width:0}
.track .tag{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px;justify-self:start}
.t-pbi .tag{background:color-mix(in srgb,var(--azure) 20%,transparent);color:var(--ink)}
.t-fab .tag{background:color-mix(in srgb,var(--accent) 22%,transparent);color:var(--ink)}
.t-x .tag{background:color-mix(in srgb,var(--cyan) 22%,transparent);color:var(--ink)}
.track p{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.chips span{font-size:.82rem;border:1px solid var(--line);border-radius:6px;padding:2px 8px;color:var(--ink)}
@media (max-width:900px){.tracks{grid-template-columns:1fr}}

/* IA */
.ia-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}
.ia-list{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:1px solid var(--line)}
.ia-list li{padding:14px 0;border-bottom:1px solid var(--line);display:flex;gap:14px}
.ia-list li::before{content:"";flex:none;width:10px;height:10px;margin-top:9px;background:var(--cyan);transform:skewX(-18deg)}
@media (max-width:820px){.ia-grid{grid-template-columns:1fr;gap:28px}}

/* Formats */
.formats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface)}
.fmt{padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;gap:8px;align-content:start}
.fmt:nth-child(3n){border-right:0}
.fmt:nth-last-child(-n+3){border-bottom:0}
.fmt .when{font-family:var(--f-mono);font-size:.74rem;color:var(--accent);letter-spacing:.05em;text-transform:uppercase}
.fmt p{color:var(--muted);font-size:.97rem}
@media (max-width:900px){.formats{grid-template-columns:1fr}.fmt{border-right:0}.fmt:nth-last-child(-n+3){border-bottom:1px solid var(--line)}.fmt:last-child{border-bottom:0}}

/* Saison */
.season{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,1fr);gap:12px;counter-reset:m}
.season li{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;display:grid;gap:8px;align-content:start;position:relative;min-width:0}
.season li::before{counter-increment:m;content:"Mois " counter(m);font-family:var(--f-mono);font-size:.74rem;color:var(--muted);letter-spacing:.05em;text-transform:uppercase}
.season h3{font-size:1.02rem}
.season p{font-size:.93rem;color:var(--muted)}
.season li:first-child{background:var(--accent);border-color:var(--accent)}
.season li:first-child h3,.season li:first-child p,.season li:first-child::before{color:var(--on-accent)}
.note{margin-top:18px;color:var(--muted);font-size:.92rem}
@media (max-width:1000px){.season{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.season{grid-template-columns:1fr}}

/* Équipe */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.person{border-top:4px solid var(--accent-2);background:var(--surface);border-radius:0 0 14px 14px;padding:24px;display:grid;gap:10px;align-content:start}
.person:nth-child(2){border-top-color:var(--cyan)}
.person:nth-child(3){border-top-color:var(--lys)}
.person .avatar{width:120px;height:120px;border-radius:50%;object-fit:cover;border:4px solid var(--surface);box-shadow:0 0 0 3px var(--accent-2),0 8px 20px rgba(11,31,58,.18);margin-bottom:6px}
.person:nth-child(2) .avatar{box-shadow:0 0 0 3px var(--cyan),0 8px 20px rgba(11,31,58,.18)}
.person:nth-child(3) .avatar{box-shadow:0 0 0 3px var(--lys),0 8px 20px rgba(11,31,58,.18)}
.person p{color:var(--muted)}
.person a{font-weight:600;text-decoration:none}
.person a:hover{text-decoration:underline}
@media (max-width:900px){.team{grid-template-columns:1fr}}

/* Participer */
.join{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;gap:12px;align-content:start}
.card p{color:var(--muted)}
.card .soon{font-family:var(--f-mono);font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.card.main{background:var(--ink);border-color:var(--ink)}
.card.main h3,.card.main p{color:var(--bg)}
.card.main .btn-primary{background:var(--cyan);border-color:var(--cyan);color:#07142A}
.card .btn{justify-self:start;margin-top:6px}
@media (max-width:760px){.join{grid-template-columns:1fr}}

/* Principes */
.principles{columns:2;column-gap:48px;list-style:none;padding:0;margin:0}
.principles li{break-inside:avoid;padding:12px 0 12px 22px;position:relative;border-bottom:1px solid var(--line)}
.principles li::before{content:"";position:absolute;left:0;top:21px;width:10px;height:3px;background:var(--accent-2)}
@media (max-width:760px){.principles{columns:1}}

footer{border-top:1px solid var(--line);padding-block:40px;color:var(--muted);font-size:.9rem}
footer .wrap{display:grid;gap:10px}
footer .row{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
footer img{height:36px;width:auto}
footer strong{color:var(--ink);font-family:var(--f-display)}

/* Sélecteur de langue */
.lang{font-family:var(--f-mono);font-size:.8rem;font-weight:500;letter-spacing:.06em;color:var(--muted);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:6px 10px;white-space:nowrap}
.lang:hover{color:var(--ink);border-color:var(--accent)}
.lang b{color:var(--ink)}
@media (max-width:860px){.lang{margin-left:auto}.nav .btn{margin-left:0}}
@media (max-width:420px){.brand span{display:none}}