:root{
 --blue:#005494; --blue-2:#286BA2; --navy:#0B2440; --ink:#22303F; --muted:#5A6878;
 --sky:#EEF5FB; --line:#DCE6EF; --bg:#FFFFFF; --fundus:#C4561E; --fundus-bg:#FDF1E9;
 --head:'Lexend',system-ui,sans-serif; --body:'Source Sans 3',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)} a:hover{color:var(--navy)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--fundus);outline-offset:3px}
h1,h2,h3{font-family:var(--head);color:var(--navy);line-height:1.2;text-wrap:balance;margin:0;font-weight:600}
h1{font-size:46px} h2{font-size:32px} h3{font-size:20px}
p{margin:0}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.eyebrow{font-family:var(--head);font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--fundus)}
.lead{font-size:20px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 24px;border-radius:8px;font-family:var(--head);font-weight:600;font-size:15px;text-decoration:none;border:2px solid var(--blue);background:var(--blue);color:#fff}
.btn:hover{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.ghost{background:transparent;color:var(--blue)} .btn.ghost:hover{background:var(--sky);color:var(--navy)}
.btn.light{background:#fff;color:var(--navy);border-color:#fff} .btn.light:hover{background:var(--sky)}
.btn.outline-light{background:transparent;color:#fff;border-color:#fff} .btn.outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-block:10px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.brand img{height:52px;width:auto}
.brand span{font-size:14px;color:var(--muted);line-height:1.25;max-width:170px}
nav.main{display:flex;flex-wrap:wrap;align-items:center;gap:4px 20px;font-family:var(--head);font-size:15px;font-weight:500}
nav.main a{color:var(--navy);text-decoration:none;padding:8px 0;border-bottom:2px solid transparent}
nav.main a[aria-current="page"],nav.main a:hover{border-bottom-color:var(--fundus)}
nav.main a.btn{color:#fff;padding:10px 18px;border-bottom:2px solid var(--blue)}
section{padding-block:72px}
.sky{background:var(--sky)}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(420px,100%),1fr));align-items:center}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr))}
.stack{display:flex;flex-direction:column;gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);transition:border-color .15s,box-shadow .15s;min-width:0}
a.card:hover{border-color:var(--blue-2);box-shadow:0 8px 24px rgba(11,36,64,.10)}
.card h3{color:var(--navy)} .card p{color:var(--muted);font-size:16px}
.card .more{margin-top:auto;padding-top:4px;font-family:var(--head);font-weight:600;font-size:14px;color:var(--blue)}
/* hero */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:url(images/fond-affiche-2026.jpg?v=20261030b) center 40%/cover no-repeat;opacity:.95;filter:blur(1.5px);transform:scale(1.03)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(11,36,64,.82) 0%,rgba(11,36,64,.62) 40%,rgba(11,36,64,.2) 100%)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:center;padding-block:64px}
.hero h1{color:#fff;font-size:50px}
.hero .lead{color:#C9D6E4}
.hero .date{font-family:var(--head);font-size:22px;color:#fff}
.hero .poster{border-radius:12px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.35);max-width:440px;justify-self:center}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{font-size:14px;font-weight:600;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.1);color:#E6EEF6}
.page-head{background:var(--navy);color:#fff;padding-block:52px;position:relative;isolation:isolate;overflow:hidden}
.page-head::after{content:"";position:absolute;top:0;right:0;bottom:0;width:62%;z-index:-1;pointer-events:none;background:url(images/fond-chirurgie.jpg?v=20261030b) center 45%/cover no-repeat;opacity:.85;-webkit-mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.35) 30%,#000 75%);mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.35) 30%,#000 75%)}
.page-head.ph-choroide::after{background-image:url(images/fond-choroide.jpg?v=20261030b);background-position:center}
.page-head.ph-vasc::after{background-image:url(images/fond-vascularisation.jpg?v=20261030b);background-position:center 55%}
@media (max-width:760px){.page-head::after{width:100%;opacity:.35}}
.page-head .wrap{display:flex;flex-direction:column;gap:12px}
.page-head h1{color:#fff;font-size:42px}
.page-head .lead{color:#C9D6E4}
.page-head .eyebrow{color:#F2A375}
.subnav{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.subnav a{font-family:var(--head);font-weight:600;font-size:14px;text-decoration:none;padding:9px 16px;border-radius:999px;border:1px solid #3E5B7C;color:#fff;min-height:40px;display:inline-flex;align-items:center}
.subnav a[aria-current="page"]{background:#fff;color:var(--navy);border-color:#fff}
/* why list */
.why{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.why li{padding:14px 0 14px 28px;border-top:1px solid var(--line);position:relative}
.why li::before{content:"";position:absolute;left:4px;top:24px;width:10px;height:10px;border-radius:50%;background:var(--fundus)}
.why li:last-child{border-bottom:1px solid var(--line)}
/* programme */
.day{display:flex;flex-direction:column;gap:12px}
.slot{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px}
.slot.pause{background:var(--sky);border-color:var(--sky);padding-block:12px}
.slot .head{display:flex;flex-wrap:wrap;gap:4px 20px;align-items:baseline}
.slot time{font-family:var(--head);font-weight:600;color:var(--fundus);min-width:56px;font-variant-numeric:tabular-nums}
.slot .t{font-family:var(--head);font-weight:600;color:var(--navy);font-size:18px;flex:1 1 360px}
.talks{list-style:none;margin:10px 0 0;padding:0}
.talks li{display:flex;flex-wrap:wrap;gap:2px 20px;padding:8px 0;border-top:1px solid var(--line);font-size:16px}
.talks time{min-width:56px;color:var(--muted);font-variant-numeric:tabular-nums}
.talks .tt{flex:1 1 300px}
.talks .who{color:var(--muted);font-weight:600}
.callout{background:var(--fundus-bg);border:1px solid #F0C7AE;border-radius:12px;padding:24px 28px;display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between}
.callout > p{flex:1 1 420px}
.steps5{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr));gap:14px;counter-reset:s}
.steps5 li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:4px;counter-increment:s}
.steps5 li::before{content:counter(s);font-family:var(--head);font-size:28px;font-weight:600;color:var(--fundus);line-height:1}
.steps5 li span{color:var(--muted);font-size:16px}
/* posters */
.poster-card{display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink)}
.poster-card .img{aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--sky);border:1px solid var(--line)}
.poster-card .img img{width:100%;height:100%;object-fit:cover}
.poster-card .y{font-family:var(--head);font-weight:600;font-size:14px;color:var(--fundus)}
.poster-card .n{font-family:var(--head);font-weight:600;font-size:19px;color:var(--navy);line-height:1.3}
.vids{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:10px}
.vids a{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--navy);background:#fff;min-height:52px;height:100%}
.vids a:hover{border-color:var(--blue-2)}
.vids svg{flex:none;margin-top:4px;color:var(--fundus)}
.vids small{display:block;color:var(--muted);font-size:14px}
/* affiches gallery */
.affiches{background:linear-gradient(180deg,var(--navy) 0%,#13355C 100%);color:#fff}
.affiches h2{color:#fff}
.affiches .eyebrow{color:#F2A375}
.affiches a.all{color:#fff;font-weight:600}
.posters{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:36px 28px;align-items:start}
.posters li a{display:flex;flex-direction:column;gap:12px;text-decoration:none;color:#fff}
.posters .frame{background:#fff;padding:8px;border-radius:10px;box-shadow:0 14px 34px rgba(0,0,0,.35);transition:transform .2s}
.posters li a:hover .frame{transform:translateY(-6px)}
.posters .frame{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.posters .frame img{width:100%;height:100%;object-fit:contain;border-radius:4px}
.posters .y{font-family:var(--head);font-weight:600;font-size:30px;line-height:1;color:#F2A375}
.posters .n{font-family:var(--head);font-weight:600;font-size:17px;line-height:1.3}
.posters .w{font-size:14px;color:#C9D6E4}

.split{grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:40px;align-items:start}
@media (max-width:760px){.split{grid-template-columns:1fr}.split .poster-card{max-width:300px}}
/* members */
.filter{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;background:var(--sky);border-radius:12px;padding:20px}
.filter label{display:flex;flex-direction:column;gap:6px;font-weight:600;flex:1 1 260px}
.filter input{font:inherit;padding:12px 14px;min-height:48px;border:2px solid #9FB3C8;border-radius:8px;background:#fff}
.dept{display:flex;flex-direction:column;gap:8px;padding:16px 0;border-top:1px solid var(--line)}
.dept h3{font-size:17px}
.dept ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:8px}
.dept li{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:16px}
.dept li b{display:block;color:var(--navy)}
.dept li span{color:var(--muted)}
.star{color:var(--fundus);font-size:14px;font-weight:600}
dl.bureau{margin:0;display:flex;flex-direction:column}
dl.bureau div{display:flex;flex-wrap:wrap;gap:4px 16px;padding:12px 0;border-top:1px solid var(--line)}
dl.bureau dt{font-weight:700;min-width:220px;color:var(--navy)}
dl.bureau dd{margin:0}
.prose{display:flex;flex-direction:column;gap:12px;max-width:74ch}
.prose h2{font-size:24px;margin-top:20px}
.refs{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:14px}
.note{font-size:15px;color:var(--muted)}
footer.site{background:var(--navy);color:#C6D3E2;font-size:16px}
footer.site .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:28px;padding-block:48px}
footer.site b{display:block;color:#fff;font-family:var(--head);font-weight:600;margin-bottom:6px}
footer.site a{color:#fff}
@media (max-width:860px){ .hero .wrap{grid-template-columns:1fr} .hero h1{font-size:36px} }
@media (max-width:640px){ h1,.page-head h1{font-size:32px} h2{font-size:26px} section{padding-block:52px} .brand span{display:none} }
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{transition:none!important}}
/* carte des membres */
.mapbox{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);box-shadow:0 8px 24px rgba(11,36,64,.08)}
#map{height:540px;background:var(--sky);font-family:var(--body)}
.map-tabs{position:absolute;top:12px;right:12px;z-index:500;display:flex;background:#fff;border-radius:999px;padding:4px;box-shadow:0 2px 10px rgba(11,36,64,.18)}
.map-tabs button{font:600 14px var(--head);border:0;background:transparent;color:var(--navy);padding:8px 14px;border-radius:999px;cursor:pointer;min-height:36px}
.map-tabs button[aria-pressed="true"]{background:var(--blue);color:#fff}
.pin span{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--blue);border:3px solid #fff;box-shadow:0 2px 8px rgba(11,36,64,.4);color:#fff;font:600 13px var(--head);transition:transform .15s}
.pin:hover span{transform:scale(1.15);background:var(--fundus)}
.leaflet-popup-content-wrapper{border-radius:10px}
.leaflet-popup-content{margin:14px 16px;font-size:15px;line-height:1.4}
.pop{display:flex;flex-direction:column;gap:4px}
.pop-n{margin:0;font-weight:700;color:var(--navy)}
.pop-a{margin:4px 0 6px;color:var(--muted)}
.pop-g{font:600 13px var(--head);color:var(--blue)}
.dept li[role="button"]{cursor:pointer;transition:border-color .15s}
.dept li[role="button"]:hover{border-color:var(--blue-2)}
@media (max-width:640px){#map{height:420px}}

/* planche anatomique en filigrane */
.anatomie{position:relative;overflow:hidden;isolation:isolate}
.anatomie::before{content:"";position:absolute;inset:0 0 0 auto;width:min(720px,70%);background:url(images/planche-arteres-ciliaires.jpg?v=20261030b) left center/contain no-repeat;opacity:.18;mix-blend-mode:multiply;z-index:-1;pointer-events:none}
@media (max-width:760px){.anatomie::before{width:100%;opacity:.06}}

/* fonds : planches originales de la vascularisation choroïdienne (Dr D. Ducournau) */
.estampe{position:relative;overflow:hidden;isolation:isolate;background:#F4ECE0}
.estampe::before{content:"";position:absolute;top:0;right:0;bottom:0;width:min(760px,62%);z-index:-1;pointer-events:none;background:var(--estampe) center/cover no-repeat;opacity:.6;-webkit-mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.6) 35%,#000 80%);mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,.6) 35%,#000 80%)}
.estampe.gauche::before{right:auto;left:0;-webkit-mask-image:linear-gradient(to left,transparent 0%,rgba(0,0,0,.6) 35%,#000 80%);mask-image:linear-gradient(to left,transparent 0%,rgba(0,0,0,.6) 35%,#000 80%)}
.e-indigo{--estampe:url(images/planche-lobules-couleur-1.jpg?v=20261030b)}
.e-sakura{--estampe:url(images/planche-lobules-couleur-2.jpg?v=20261030b)}
.e-capillaires{--estampe:url(images/planche-lobules-couleur-2.jpg?v=20261030b)}
.affiches.e-sakura-nuit{position:relative;overflow:hidden;isolation:isolate}
.affiches.e-sakura-nuit::before{content:"";position:absolute;top:0;right:0;bottom:0;width:min(820px,65%);z-index:-1;pointer-events:none;background:url(images/planche-lobules-nb.jpg?v=20261030b) center/cover no-repeat;opacity:.28;mix-blend-mode:screen;-webkit-mask-image:linear-gradient(to right,transparent 0%,#000 70%);mask-image:linear-gradient(to right,transparent 0%,#000 70%)}
.estampe .callout{background:rgba(255,255,255,.92)!important}
@media (max-width:760px){.estampe::before{width:100%;opacity:.22}.affiches.e-sakura-nuit::before{width:100%;opacity:.15}}

@media (max-width:860px){.hero::after{background:rgba(11,36,64,.66)}}

/* bandeaux : planche des lobules, nette, sur la moitié droite */
.page-head{padding-block:72px;min-height:340px;display:flex;align-items:center}
.page-head > .wrap{width:100%}
.page-head::after,.page-head.ph-choroide::after,.page-head.ph-vasc::after{top:0;right:0;bottom:0;left:auto;width:52%;opacity:1;background:url(images/planche-lobules-choroidiens.jpg?v=20261030b) center 45%/cover no-repeat;-webkit-mask-image:linear-gradient(to right,transparent 0%,#000 22%);mask-image:linear-gradient(to right,transparent 0%,#000 22%);z-index:-1}
.page-head .wrap > *{max-width:600px}
@media (max-width:760px){.page-head{padding-block:52px;min-height:240px}.page-head::after,.page-head.ph-choroide::after,.page-head.ph-vasc::after{width:100%;opacity:.3;-webkit-mask-image:none;mask-image:none}}