/* ECP3M : design "blueprint" graphite et cuivre. 5 disciplines = 5 couleurs. Aucune ressource externe. */
:root{
  --ink:#15171C; --ink2:#23272F; --paper:#F6F4EF; --card:#fff; --line:#DDD8CF; --muted:#5B6068; --accent:#0A6B5E; --amber:#F2B233;
  --max:1100px; --r:14px;
  --serif:Georgia,"Noto Serif","Noto Serif JP","Hiragino Mincho ProN","Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI","Noto Sans","Noto Sans Arabic","Noto Sans JP","Hiragino Sans","Yu Gothic",Tahoma,Roboto,Arial,sans-serif;
}
.d-mech{--c:#E8742C;--cd:#B8500F} .d-elec{--c:#E0A800;--cd:#8A6100} .d-auto{--c:#8B5CF6;--cd:#5B33B8}
.d-phys{--c:#E04861;--cd:#A81F36} .d-chem{--c:#22B35E;--cd:#0F7A36} .d-other{--c:#8A9099;--cd:#55616B}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.65 var(--sans);overflow-x:hidden}
.l-ar,.l-ja{line-height:1.85}
a{color:var(--accent);text-underline-offset:.18em}
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
h1,h2,h3{font-family:var(--serif);line-height:1.2;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(1.8rem,5vw,2.6rem)} h2{font-size:1.5rem;margin-top:2em} h3{font-size:1.1rem}
h2 small,h3 small{font:400 .8em var(--sans);color:var(--muted)}
p{margin:0 0 1em} .muted,.small{color:var(--muted)} .small{font-size:.88rem}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);background:var(--amber);color:var(--ink);padding:.5rem 1rem;z-index:50}
.skip:focus{width:auto;height:auto;clip-path:none;inset-inline-start:.5rem;top:.5rem}

/* en-tête et navigation regroupée */
.top{position:sticky;top:0;z-index:30;background:var(--ink);color:#fff;display:flex;align-items:center;gap:.4rem 1.4rem;flex-wrap:wrap;padding:.65rem 1.25rem .85rem;padding-top:calc(.65rem + env(safe-area-inset-top))}
.brand{display:flex;align-items:center;gap:.6rem;color:#fff;text-decoration:none;font:700 1.35rem var(--serif)}
.mark{width:28px;height:28px;border-radius:7px;background:conic-gradient(#E8742C,#F2B233,#22B35E,#E04861,#8B5CF6,#E8742C);box-shadow:inset 0 0 0 5px var(--ink)}
.top nav{display:flex;gap:.2rem 1.3rem;flex-wrap:wrap;align-items:center}
.top nav>a,.dd summary{color:#D5D8DD;text-decoration:none;padding:.3rem 0;border-bottom:2px solid transparent;font-size:.96rem;cursor:pointer;list-style:none;display:block}
.top nav>a:hover,.top nav>a[aria-current],.dd summary:hover,.dd.has-current summary{color:#fff;border-bottom-color:var(--amber)}
.dd{position:relative} .dd summary::-webkit-details-marker{display:none} .dd summary::after{content:" ▾";font-size:.8em}
.dd>div{position:absolute;inset-inline-start:-.8rem;top:100%;background:var(--ink2);border-radius:10px;padding:.5rem .4rem;display:flex;flex-direction:column;min-width:13rem;box-shadow:0 12px 30px #0007;z-index:40}
.dd>div a{color:#E5E7EA;text-decoration:none;padding:.5rem .8rem;border-radius:8px;white-space:nowrap} .dd>div a:hover,.dd>div a[aria-current]{background:#ffffff14;color:#fff}
.langs{display:flex;gap:.45rem;flex-wrap:wrap;margin-inline-start:auto}
.langs a{color:#D5D8DD;text-decoration:none;font-size:.85rem;padding:.1rem .6rem;border:1px solid #4a505b;border-radius:999px}
.langs a[aria-current]{background:var(--amber);color:var(--ink);border-color:var(--amber)}
.strip{position:absolute;inset-inline:0;bottom:0;height:4px;display:flex}
.strip i{flex:1;background:var(--c)}

/* hero */
.hero{color:#fff;background:
  linear-gradient(#ffffff0c 1px,transparent 1px) 0 0/32px 32px,linear-gradient(90deg,#ffffff0c 1px,transparent 1px) 0 0/32px 32px,
  radial-gradient(800px 500px at 80% 40%,#f2b2331f,transparent),var(--ink);padding:3rem 0 2.5rem;overflow:hidden}
.hero.small{padding:2rem 0 1.2rem}.hero.small h1{color:#fff}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:1rem;align-items:center}
.eyebrow{color:var(--amber);font-weight:600;letter-spacing:.03em;margin-bottom:.4rem}
.display{font-size:clamp(3.4rem,11vw,6.4rem);margin:0 0 .1em;letter-spacing:-.01em;line-height:1}
.lead{font:600 1.2rem/1.45 var(--serif);color:var(--accent);margin-bottom:1em} .hero .lead{color:#9BE4D5}
.since{display:inline-block;border:1px solid var(--amber);color:var(--amber);border-radius:999px;padding:.15rem .9rem;font-size:.92rem;font-weight:600}
.actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;padding:.7rem 1.3rem;border-radius:10px;font-weight:600;border:2px solid var(--ink)}
.hero .btn{background:var(--amber);color:var(--ink);border-color:var(--amber)} .btn.ghost{background:transparent!important;color:#fff!important;border-color:#ffffff66!important}
.btn.alt{background:transparent;color:var(--ink)} .btn.amber{background:var(--amber);color:var(--ink);border-color:var(--amber)}
.hero-art{width:100%;height:auto;max-height:560px}
.hero-art .ring{fill:none;stroke:#ffffff26;stroke-dasharray:3 7} .hero-art .ring.r2{stroke:#ffffff14}
.hero-art .flow{stroke:var(--c);stroke-width:2;stroke-dasharray:4 8;opacity:.85;animation:flow 3s linear infinite}
.hero-art .core{fill:#1c1f26;stroke:var(--amber);stroke-width:2} .hero-art .ct{fill:#fff;font:700 22px var(--serif)}
.hero-art .node{color:var(--c)} .hero-art .nc{fill:#1c1f26;stroke:var(--c);stroke-width:2.5} .hero-art .nl{fill:#E5E7EA;font:600 15px var(--sans)}
.hero-art .spin{transform-origin:24px 24px;animation:spin 18s linear infinite} .spin.slow{animation-duration:40s} .spin.rev{animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}} @keyframes flow{to{stroke-dashoffset:-36}}
@media (prefers-reduced-motion:reduce){.hero-art .flow,.hero-art .spin{animation:none}html{scroll-behavior:auto}}
.band-event{background:linear-gradient(90deg,var(--ink2),var(--ink));color:#fff;padding:1.6rem 0}
.band-event .wrap{display:flex;gap:1rem 2rem;align-items:center;justify-content:space-between;flex-wrap:wrap}
.band-event a{color:#fff}.band-event h2{margin:.2em 0}.band-event .btn{color:var(--ink)}
.date-chip{display:inline-block;background:var(--amber);color:var(--ink);font-weight:600;padding:.12rem .75rem;border-radius:999px;font-size:.9rem;margin-bottom:.5rem}
.block{padding-top:2rem;padding-bottom:.5rem}.block h2{margin-top:0}
.stats{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.8rem;padding:0;margin:0}
.stats li{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:.9rem 1rem}
.stats b{display:block;font:700 2rem var(--serif);color:var(--accent)} .stats span{color:var(--muted);font-size:.9rem}

/* panneaux : même taille partout */
.grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-auto-rows:1fr;gap:1rem;padding:0;margin:1rem 0 1.5rem}
.panel{display:flex;flex-direction:column;gap:.3rem;height:100%;min-height:150px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s,border-color .2s}
a.panel:hover{transform:translateY(-3px);box-shadow:0 12px 28px #15171c1f;border-color:var(--accent)}
.panel span,.panel small{color:var(--muted);font-size:.95rem} .panel .rs{color:var(--ink);font-weight:400}
.panel strong{font-size:1.02rem} .panel p{margin:0;color:var(--muted);font-size:.95rem}
.panel.dcard{border-top:5px solid var(--c)} .dcard .ico{color:var(--c)} .dcard h3{margin:.4rem 0 .1rem} .more-link{color:var(--cd);font-weight:600;font-size:.9rem;margin-top:auto}
.panel.tl{border-inline-start:5px solid var(--c)} .tl span{color:var(--cd);font-weight:700}
.lvl-phd{border-top:4px solid #8B5CF6}.lvl-master{border-top:4px solid #22B35E}.lvl-magister{border-top:4px solid #E8742C}
li.panel .role{color:var(--cd,var(--accent));font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.03em}
.people{list-style:none;margin:0 0 1rem;padding:0;display:grid;gap:.9rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-auto-rows:1fr}
.pcard{display:flex;align-items:center;gap:.8rem;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:.8rem 1rem;text-decoration:none;color:var(--ink)}
.pcard:hover{border-color:var(--accent)} .pcard small{display:block;color:var(--muted)}
.av{width:52px;height:52px;border-radius:50%;object-fit:cover;flex:none}
.av.ph{display:grid;place-items:center;background:conic-gradient(from 200deg,#FBE3D0,#DDF0E8,#F4DDE5,#FBE3D0);color:var(--ink);font:700 1.05rem var(--serif)}
.av.big{width:112px;height:112px;font-size:2.1rem;margin-bottom:.8rem}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0 0 1rem}
.tags li{background:#E1F0EC;color:#0A5A4F;border-radius:999px;padding:.1rem .75rem;font-size:.9rem}

/* texte */
.prose{padding-top:2rem;padding-bottom:3rem}
.prose>p,.prose>h1,.prose>h2,.prose>dl,.prose>ul:not(.grid):not(.people):not(.pubs):not(.axes-list){max-width:48rem}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1.2rem;margin:0 0 1.5rem}.facts dt{font-weight:600;color:var(--muted)}.facts dd{margin:0}
.note{background:#FFF3D3;border-inline-start:4px solid var(--amber);padding:.5rem .8rem;border-radius:8px}
.sign{margin-top:1.5rem}.post{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.2rem;margin:1rem 0}.post h3{margin-top:0}
.tag{display:inline-block;margin-inline-start:.5rem;background:#ECEAE4;color:var(--muted);border-radius:999px;padding:0 .6rem;font-size:.78rem}

/* journée scientifique */
.axes-list{list-style:none;padding:0;margin:0 0 1.5rem;display:grid;gap:.8rem}
.axis{display:flex;gap:1rem;background:var(--card);border:1px solid var(--line);border-inline-start:6px solid var(--c);border-radius:var(--r);padding:1rem 1.1rem}
.axis .num{flex:none;width:2.6rem;height:2.6rem;border-radius:50%;background:var(--c);color:#fff;display:grid;place-items:center;font:700 1.2rem var(--serif)}
.axis h3{margin:0 0 .2rem}.axis p{margin:0 0 .4rem;color:var(--muted)} .axis .tag{margin:0 .3rem .2rem 0}
.timeline{list-style:none;padding:0;margin:0 0 1.5rem;border-inline-start:3px solid var(--line)}
.timeline li{position:relative;padding:.3rem 0 1rem 1.2rem}.timeline li::before{content:"";position:absolute;inset-inline-start:-9px;top:.55rem;width:15px;height:15px;border-radius:50%;background:var(--paper);border:3px solid var(--accent)}
.timeline li.final::before{background:var(--amber);border-color:var(--ink)} .timeline b{display:block;font:700 1.1rem var(--serif)} .timeline span{color:var(--muted)} .timeline em{color:var(--cd,#8A6100)}
.gl{padding-inline-start:1.2rem} .gl li{margin:.3rem 0}
.l-ar .timeline li,.l-ar .timeline li::before{padding-left:0}

/* page membre */
.member{display:grid;grid-template-columns:260px 1fr;gap:2rem;padding-top:2rem;padding-bottom:3rem}
.member aside{align-self:start;position:sticky;top:6rem}.member h1{font-size:1.7rem;margin-bottom:.2em}.role{color:var(--muted);margin-bottom:.8rem}
.links{list-style:none;padding:0;margin:0 0 1rem}.links li{padding:.15rem 0;word-break:break-word}
.metrics{list-style:none;display:flex;gap:.6rem;padding:0;margin:0 0 .4rem}
.metrics li{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.4rem .7rem;text-align:center}
.metrics b{display:block;font:700 1.3rem var(--serif)}.metrics span{font-size:.8rem;color:var(--muted)}
.member .prose{padding:0}.member .prose h2:first-child{margin-top:0}

/* publications */
.pubs{list-style:none;padding:0;margin:0 0 2rem}
.pubs li{display:grid;grid-template-columns:3.4rem 1fr;gap:.8rem;padding:.8rem;margin:.35rem 0;background:var(--card);border-radius:10px;border-inline-start:4px solid var(--c,var(--line))}
.pubs li[hidden]{display:none}.pubs .y{font:700 1rem var(--serif);color:var(--cd,var(--accent))}
.pubs .cited{color:var(--muted);font-size:.88rem}.pubs .by{display:inline-block;margin-inline-start:.5rem;font-size:.88rem;color:var(--muted)}
.tabs{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;margin:1rem 0}
.tabs button{font:inherit;background:#fff;border:1px solid var(--line);border-radius:999px;padding:.4rem 1rem;cursor:pointer}
.tabs button[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.filters{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1rem}.filters label{display:flex;flex-direction:column;font-size:.9rem;color:var(--muted);gap:.2rem}
.filters select,.filters input{font:inherit;padding:.5rem .6rem;border:1px solid var(--line);border-radius:8px;background:#fff;min-width:11rem}
.grp h3{margin-top:1.6rem;padding-bottom:.3rem;border-bottom:2px solid var(--line)}.grp[hidden],.view[hidden]{display:none}
.prog{border-collapse:collapse;width:100%;max-width:48rem;margin-bottom:1.5rem}
.prog th{width:7.5rem;text-align:start;font:700 1rem var(--serif);color:var(--accent);vertical-align:top}.prog th,.prog td{padding:.65rem .4rem;border-top:1px solid var(--line)}

.foot{background:var(--ink);color:#BEC3CA;padding:2rem 0 1rem;margin-top:2rem}.foot a{color:#fff}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem}.foot p{margin:.2rem 0}
.copy{text-align:center;font-size:.85rem;margin:1.5rem 0 0;color:#8D939C}

/* mobile : barre d'onglets type application */
.tabbar{display:none}
@media (max-width:820px){.hero-grid{grid-template-columns:1fr;gap:0}.hero{padding-top:2rem}.member{grid-template-columns:1fr}.member aside{position:static}}
@media (max-width:760px){
  body{font-size:1rem;padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .top nav{display:none;flex-direction:column;align-items:stretch;width:100%;gap:0;padding:.4rem 0}.top nav.open{display:flex}
  .top nav>a,.dd summary{padding:.7rem 0;font-size:1.02rem;border-bottom:1px solid #ffffff14}
  .dd>div{position:static;box-shadow:none;background:transparent;padding:0 0 .3rem;min-width:0}.dd>div a{padding:.55rem .8rem}
  .langs{width:100%;margin:0}.langs a{padding:.3rem .8rem}
  .tabbar{display:flex;position:fixed;inset-inline:0;bottom:0;z-index:40;background:var(--ink);border-top:1px solid #343944;padding-bottom:env(safe-area-inset-bottom)}
  .tabbar a,.tabbar button{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:.45rem .1rem;color:#A5ABB4;text-decoration:none;font:500 .68rem var(--sans);background:none;border:0;min-height:56px;cursor:pointer}
  .tabbar svg{width:23px;height:23px}.tabbar a[aria-current]{color:var(--amber)}.tabbar span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .pubs li{grid-template-columns:2.8rem 1fr;padding:.7rem .6rem}.display{font-size:4rem}
  .btn{padding:.8rem 1.2rem}.actions .btn{flex:1;text-align:center}.grid{grid-template-columns:1fr 1fr}.panel{min-height:140px;padding:.9rem}.dcard p{display:none}
  .filters label,.filters select,.filters input{width:100%;min-width:0}.hero-art{max-height:380px;margin-top:.5rem}
}
@media (max-width:480px){.grid,.people{grid-template-columns:1fr}.dcard p{display:block}.stats{grid-template-columns:1fr 1fr}}
@media print{.top,.foot,.filters,.skip,.tabbar{display:none}body{background:#fff;padding:0}}