:root{
  --night:#070D1C; --deep:#0B1530; --panel:#101C3A; --edge:#22325A;
  --ink:#E9EFF9; --muted:#9EAECB; --blue:#3D7BFF; --blue-hi:#7EA2FF; --green:#5DBB3F; --green-hi:#86D366;
  --sans:"Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  color-scheme:dark; box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-behavior:smooth;scroll-padding-top:calc(env(safe-area-inset-top,0px) + 80px)}
body{margin:0;background:var(--night);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;
  background-image:radial-gradient(900px 600px at 85% -10%,rgba(61,123,255,.22),transparent 60%),radial-gradient(700px 500px at -10% 40%,rgba(93,187,63,.10),transparent 60%);
  background-repeat:no-repeat}
img{max-width:100%;height:auto}
a{color:var(--blue-hi)}
:focus-visible{outline:3px solid var(--green-hi);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--green);color:#061006;padding:8px 14px;border-radius:6px;z-index:50}
.skip:focus{left:12px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* en-tête */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:rgba(7,13,28,.9)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(7,13,28,.84);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid rgba(34,50,90,.7)}
.top .wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);margin-right:auto}
.brand img{width:40px;height:40px;border-radius:9px}
.brand span{font-weight:700;font-size:17px;letter-spacing:.01em;line-height:1.1}
.brand em{font-style:normal;color:var(--blue-hi)}.brand i{font-style:normal;color:var(--green-hi)}
.nav{display:flex;gap:22px}
.nav a{color:var(--muted);text-decoration:none;font-size:15.5px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--green-hi)}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;padding:8px 12px;border:1px solid var(--edge);border-radius:9px;color:var(--ink);font-size:15px}
.menu summary::-webkit-details-marker{display:none}
.menu nav{position:absolute;right:0;top:calc(100% + 8px);background:var(--deep);border:1px solid var(--edge);border-radius:12px;padding:8px;min-width:220px;display:grid}
.menu nav a{color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:8px}
.menu nav a:hover{background:var(--panel)}

.btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:600;font-size:16px;text-decoration:none;border-radius:10px;padding:12px 20px;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 0 0 1px rgba(126,162,255,.35),0 8px 28px rgba(61,123,255,.35)}
.btn.primary:hover{background:#5089ff}
.btn.ghost{color:var(--ink);border-color:var(--edge);background:rgba(16,28,58,.6)}
.btn.ghost:hover{border-color:var(--blue-hi)}
.btn.small{padding:9px 15px;font-size:15px}
.cta{display:flex;flex-wrap:wrap;gap:12px}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:40px;align-items:center;padding:64px 0 56px}
.hero h1{font-size:clamp(32px,3.9vw,50px);line-height:1.08;letter-spacing:-.02em;margin:0 0 22px;font-weight:750;text-wrap:balance}
.lead{font-size:clamp(17px,1.5vw,19.5px);color:var(--muted);max-width:50ch;margin:0 0 30px}
.motto{margin:30px 0 0;color:var(--muted);font-size:15px}
.motto b{color:var(--ink);font-weight:600}

/* carte des parcours */
.map{width:100%;height:auto;display:block;overflow:visible}
.map .lk{stroke:var(--c);stroke-width:2;opacity:.45;fill:none}
.map .soon-lk{opacity:.18;stroke-dasharray:4 6}
.map .pk{stroke:var(--c);stroke-width:3;fill:none;stroke-linecap:round;stroke-dasharray:10 400;stroke-dashoffset:410;animation:pkt 3.2s linear infinite;filter:drop-shadow(0 0 4px var(--c))}
@keyframes pkt{to{stroke-dashoffset:0}}
.map .core{fill:#0B1530;stroke:var(--blue);stroke-width:2;filter:drop-shadow(0 0 14px rgba(61,123,255,.6))}
.map .nd rect{fill:#0E1A36;stroke:var(--c);stroke-width:2;filter:drop-shadow(0 0 8px color-mix(in srgb,var(--c) 55%,transparent));transition:fill .15s}
.map a.nd:hover rect,.map a.nd:focus-visible rect{fill:color-mix(in srgb,var(--c) 22%,#0E1A36)}
.map a.nd{outline:none}
.map a.nd:focus-visible rect{stroke-width:4}
.map .soon rect{stroke-dasharray:5 4;opacity:.55;filter:none}
.map .soon text{opacity:.6}
.map text{text-anchor:middle;font-family:var(--sans)}
.map .nc{fill:var(--c);font-weight:800;font-size:14px;letter-spacing:.06em}
.map .nn{fill:var(--ink);font-size:13px}
.map .ns{fill:var(--muted);font-size:11px}
.maplegend{display:flex;gap:18px;justify-content:center;margin-top:8px;font-size:13.5px;color:var(--muted)}
.maplegend span::before{content:"";display:inline-block;width:22px;height:0;border-top:2px solid var(--blue-hi);vertical-align:middle;margin-right:7px}
.maplegend span.s::before{border-top:2px dashed var(--muted)}
.maplist{display:none;list-style:none;padding:0;margin:0;gap:8px}
.maplist li>*{display:flex;gap:10px;align-items:center;padding:12px 14px;border-radius:10px;border:1px solid var(--edge);background:var(--deep);color:var(--ink);text-decoration:none}
.maplist li>*::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--c);box-shadow:0 0 8px var(--c);flex-shrink:0}
.maplist b{color:var(--c);letter-spacing:.05em}
.maplist small{margin-left:auto;color:var(--muted);font-size:13px}
.maplist span.soon{opacity:.65;border-style:dashed}

/* sections */
section.block{padding:72px 0;border-top:1px solid rgba(34,50,90,.6)}
.block h2{font-size:clamp(27px,3vw,38px);line-height:1.15;letter-spacing:-.01em;margin:0 0 14px;max-width:26ch}
.intro{color:var(--muted);max-width:62ch;margin:0 0 36px}

/* trois piliers */
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--edge);border-radius:18px;overflow:hidden;background:var(--deep)}
.pillar{padding:28px 26px 30px;position:relative;text-decoration:none;color:var(--ink);display:flex;flex-direction:column}
.pillar+.pillar{border-left:1px solid var(--edge)}
.pillar::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--c)}
.pillar:hover{background:var(--panel)}
.pillar h3{font-size:21px;margin:14px 0 8px}
.pillar p{margin:0 0 18px;color:var(--muted);font-size:15.5px}
.pillar .go{margin-top:auto;color:var(--c);font-weight:600;font-size:15.5px}
.status{display:inline-block;font-size:13px;font-weight:600;padding:3px 10px;border-radius:999px;border:1px solid currentColor;width:max-content}
.status.on{color:var(--green-hi)}.status.wip{color:#F2C53D}.status.open{color:var(--blue-hi)}

/* lab vedette */
.feature{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:start}
.feature figure{margin:0;border-radius:16px;overflow:hidden;border:1px solid var(--edge);box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 0 1px rgba(61,123,255,.15)}
.feature figure img{display:block;width:100%}
.feature figcaption{font-size:14px;color:var(--muted);padding:10px 14px;background:var(--deep)}
.feature h3{font-size:24px;line-height:1.25;margin:0 0 10px}
.facts{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px;padding:0;list-style:none}
.facts li{font-size:14px;padding:5px 11px;border-radius:999px;border:1px solid var(--edge);color:var(--muted);background:var(--deep)}
.feature ul.skills{margin:0 0 26px;padding-left:20px}
.feature ul.skills li{margin:6px 0}

/* méthode */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:24px;right:24px;top:23px;height:2px;background:linear-gradient(90deg,var(--blue),var(--green))}
.steps li{position:relative;padding:0 18px 0 0;counter-increment:s}
.steps li::before{content:counter(s);display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--night);border:2px solid var(--blue-hi);color:var(--ink);font-weight:700;margin-bottom:16px;position:relative}
.steps li:last-child::before{border-color:var(--green-hi)}
.steps h3{font-size:18px;margin:0 0 6px}
.steps p{margin:0;color:var(--muted);font-size:15.5px}

/* pages intérieures */
.pagehead{padding:64px 0 40px}
.pagehead h1{font-size:clamp(32px,4vw,48px);line-height:1.1;letter-spacing:-.02em;margin:14px 0 16px;max-width:22ch;text-wrap:balance}
.prose{max-width:68ch}
.prose h2{font-size:26px;margin:44px 0 12px}
.prose p,.prose li{color:var(--ink)}
.prose ul{padding-left:22px}
.prose li{margin:6px 0}
.note{border-left:3px solid var(--blue-hi);background:var(--deep);padding:14px 18px;border-radius:0 10px 10px 0;color:var(--muted);font-size:15.5px;margin:24px 0}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.tile{border:1px solid var(--edge);background:var(--deep);border-radius:14px;padding:20px 22px}
.tile h3{margin:0 0 6px;font-size:18px}
.tile p{margin:0;color:var(--muted);font-size:15.5px}
.tile .status{margin-bottom:10px}

/* à propos */
.about{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px}
.about p{margin:0 0 16px;max-width:60ch}
.stackgrid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.stackgrid h3{font-size:15.5px;margin:0 0 10px;color:var(--blue-hi);font-weight:650}
.stackgrid ul{list-style:none;margin:0;padding:0}
.stackgrid li{padding:7px 0;border-bottom:1px solid rgba(34,50,90,.7);font-size:15.5px}

/* canaux */
.channels{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.channels a{display:block;padding:20px;border-radius:14px;border:1px solid var(--edge);background:var(--deep);color:var(--ink);text-decoration:none}
.channels a:hover{border-color:var(--blue-hi)}
.channels strong{display:block;font-size:17px;margin-bottom:4px}
.channels span{color:var(--muted);font-size:14.5px}
.channels a.kofi{border-color:rgba(93,187,63,.55);background:linear-gradient(160deg,rgba(93,187,63,.14),var(--deep) 60%)}

/* pied de page */
footer{border-top:1px solid rgba(34,50,90,.6);padding:40px 0 48px;color:var(--muted);font-size:14.5px;margin-top:40px}
footer .row{display:flex;flex-wrap:wrap;gap:16px 40px;justify-content:space-between}
footer a{color:var(--muted)}
footer nav{display:flex;flex-wrap:wrap;gap:8px 20px}

@media (max-width:940px){
  .nav,.top .btn{display:none}
  .menu{display:block}
  .hero{grid-template-columns:1fr;padding-top:44px}
  .feature,.about{grid-template-columns:1fr}
  .pillars{grid-template-columns:1fr}
  .pillar+.pillar{border-left:none;border-top:1px solid var(--edge)}
  .steps{grid-template-columns:1fr;gap:22px}
  .steps::before{left:23px;right:auto;top:24px;bottom:24px;width:2px;height:auto;background:linear-gradient(180deg,var(--blue),var(--green))}
  .steps li{display:grid;grid-template-columns:48px 1fr;column-gap:16px;padding:0}
  .steps li::before{margin:0;grid-row:span 2}
  .channels{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .map,.maplegend{display:none}
  .maplist{display:grid}
  .brand span{font-size:15.5px}
  .stackgrid,.grid2,.channels{grid-template-columns:1fr}
  section.block{padding:56px 0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .map .pk{animation:none;display:none}
}