:root{
  --bg:#ffffff; --bg-2:#f5f7fa; --surface:#ffffff; --ink:#0b1424; --ink-2:#3a4558; --muted:#6a7486;
  --line:#e3e7ee; --accent:#0a66d8; --accent-2:#00a3a3; --accent-soft:#eaf2fd;
  --hero-1:#06101f; --hero-2:#0b2547; --hero-ink:#ffffff; --hero-muted:#a9b8cf;
  --journal:#5b3fd6; --conf:#1f5fd6; --shadow:0 1px 2px rgba(11,20,36,.04),0 8px 24px rgba(11,20,36,.06);
  --logo-filter:none;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0a0e14; --bg-2:#0e131b; --surface:#121822; --ink:#e9edf3; --ink-2:#bcc5d3; --muted:#8892a3;
    --line:#212a37; --accent:#5aa2ff; --accent-2:#3fd0cf; --accent-soft:#132338;
    --hero-1:#04080e; --hero-2:#0a1d38;
    --journal:#a493ff; --conf:#7aa5ff; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
    --logo-filter:invert(1);
  }
}
:root[data-theme="dark"]{
  --bg:#0a0e14; --bg-2:#0e131b; --surface:#121822; --ink:#e9edf3; --ink-2:#bcc5d3; --muted:#8892a3;
  --line:#212a37; --accent:#5aa2ff; --accent-2:#3fd0cf; --accent-soft:#132338;
  --hero-1:#04080e; --hero-2:#0a1d38;
  --journal:#a493ff; --conf:#7aa5ff; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
  --logo-filter:invert(1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px;background:var(--hero-1)}
/* Safari 26+ ignores theme-color and tints its bar from the body background, so the body is navy
   (like the header and footer) and the page content sits on <main> with the normal background */
main{display:block;background:var(--bg)}
body{margin:0;background:var(--hero-1);color:var(--ink);font:16px/1.65 Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
h1,h2,h3,.display{font-family:"Space Grotesk",Inter,sans-serif;letter-spacing:-.02em}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.sec{padding:88px 0}
.sec.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(1.9rem,3.4vw,2.5rem);line-height:1.1;margin:6px 0 0}
.sec-head p{max-width:520px;margin:0;color:var(--muted)}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:20;transition:background .25s,border-color .25s;border-bottom:1px solid transparent}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand:hover{text-decoration:none}
.brand img{width:34px;height:34px;filter:invert(1)}
.brand b{font-family:"Space Grotesk";font-size:1.35rem;letter-spacing:.02em}
.brand span{font-size:.72rem;line-height:1.15;color:var(--hero-muted);border-left:1px solid rgba(255,255,255,.25);padding-left:10px}
.links{display:flex;gap:2px}
.links a{color:rgba(255,255,255,.82);font-size:.9rem;font-weight:500;padding:8px 12px;border-radius:8px}
.links a:hover{color:#fff;background:rgba(255,255,255,.08);text-decoration:none}
.icon-btn{width:38px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center;flex:none}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none}
.nav.solid{background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.nav-actions{display:flex;gap:8px;align-items:center}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:var(--hero-ink);background:radial-gradient(1200px 600px at 85% 20%,#12407a 0%,transparent 60%),linear-gradient(160deg,var(--hero-1),var(--hero-2));padding:168px 0 96px}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.hero .eyebrow{color:#7fc4ff}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);line-height:1.02;margin:14px 0 18px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#6fb6ff,#43e0d6);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.12rem;color:var(--hero-muted);max-width:600px;margin:0 0 30px}
.cta{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:10px;font-weight:600;font-size:.94rem;border:1px solid transparent;transition:transform .15s,background .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn svg{width:17px;height:17px}
.btn.primary{background:#fff;color:#0b1424}
.btn.ghost{border-color:rgba(255,255,255,.28);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.hero-mark{justify-self:center;width:min(300px,70vw);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,rgba(111,182,255,.18),rgba(111,182,255,0) 70%);border:1px solid rgba(255,255,255,.12)}
.hero-mark img{width:62%;filter:invert(1) drop-shadow(0 0 30px rgba(111,182,255,.35))}
.stats{position:relative;margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid rgba(255,255,255,.12);border-radius:16px;background:rgba(255,255,255,.03);backdrop-filter:blur(4px)}
.stats div{padding:20px 22px;border-left:1px solid rgba(255,255,255,.1)}
.stats div:first-child{border-left:0}
.stats b{display:block;font-family:"Space Grotesk";font-size:2rem;line-height:1.1}
.stats span{font-size:.85rem;color:var(--hero-muted)}

/* ---------- research ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.card .ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:16px}
.card .ico svg{width:24px;height:24px}
.card h3{font-size:1.15rem;margin:0 0 8px}
.card p{margin:0;color:var(--ink-2);font-size:.94rem}

/* ---------- news ---------- */
.news{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.news-item{display:grid;grid-template-columns:78px 1fr;gap:16px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px}
.date{text-align:center;border-radius:10px;background:var(--accent-soft);color:var(--accent);padding:8px 4px;line-height:1.1}
.date b{display:block;font-family:"Space Grotesk";font-size:1.05rem}
.date span{font-size:.75rem;font-weight:600}
.news-item h3{font-size:1rem;margin:0 0 4px;line-height:1.35}
.news-item p{margin:0;color:var(--muted);font-size:.9rem}

/* ---------- publications ---------- */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:22px}
.seg{display:inline-flex;background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:3px}
.seg button{font:inherit;font-size:.88rem;font-weight:600;border:0;background:transparent;color:var(--ink-2);padding:7px 14px;border-radius:7px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.search{flex:1;min-width:200px;position:relative}
.search input{width:100%;font:inherit;font-size:.92rem;padding:9px 12px 9px 36px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}
.search input:focus{outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);border-color:var(--accent)}
.search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted)}
.count{font-size:.85rem;color:var(--muted)}
.year{display:flex;align-items:center;gap:14px;margin:30px 0 12px;font-family:"Space Grotesk";font-weight:700;font-size:1.25rem}
.year::after{content:"";flex:1;height:1px;background:var(--line)}
.pub{display:grid;grid-template-columns:96px 1fr;gap:18px;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--surface);margin-bottom:10px}
.pub.fig{grid-template-columns:96px 220px 1fr}
.pub figure{margin:0}
.pub figure img{width:100%;border-radius:8px;border:1px solid var(--line);display:block;background:#fff}
.venue{align-self:start;text-align:center;font-family:"Space Grotesk";font-weight:700;font-size:.82rem;padding:7px 4px;border-radius:8px;color:#fff}
.venue.Journal{background:var(--journal)}
.venue.Conference{background:var(--conf)}
.venue small{display:block;font-family:Inter;font-weight:600;font-size:.62rem;letter-spacing:.06em;text-transform:uppercase;opacity:.85}
.pub .t{font-weight:700;color:var(--ink);line-height:1.4;font-size:1.02rem}
a.t:hover{color:var(--accent);text-decoration:none}
.pub .a{font-size:.92rem;color:var(--ink-2);margin-top:4px}
.pub .a b{color:var(--ink)}
.pub .v{font-size:.88rem;color:var(--muted);font-style:italic}
.pub-links{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.chip{font:inherit;font-size:.78rem;font-weight:600;padding:4px 10px;border-radius:7px;border:1px solid var(--line);background:var(--bg-2);color:var(--ink-2);cursor:pointer}
.chip:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
pre.bib{display:none;margin:10px 0 0;padding:12px;border-radius:8px;background:var(--bg-2);border:1px solid var(--line);font-size:.78rem;line-height:1.5;overflow-x:auto;color:var(--ink-2);white-space:pre}
pre.bib.open{display:block}
.empty{padding:30px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:14px}

/* ---------- people ---------- */
.lead-card{display:grid;grid-template-columns:260px 1fr;gap:36px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow)}
.lead-card .photo{width:100%;aspect-ratio:1;border-radius:16px;object-fit:cover;background:var(--bg-2)}
.lead-card .role{color:var(--accent);font-weight:600;margin:2px 0 14px}
.lead-card h3{font-size:1.7rem;margin:0}
.lead-card p{color:var(--ink-2);margin:0 0 14px}
.socials{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.socials a{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:9px;border:1px solid var(--line);color:var(--ink);font-size:.86rem;font-weight:600}
.socials a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.socials svg{width:16px;height:16px}
.cv{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
.cv h4{margin:0 0 10px;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.cv ul{list-style:none;margin:0;padding:0}
.cv li{padding:8px 0;border-top:1px solid var(--line);font-size:.9rem;color:var(--ink-2);line-height:1.45}
.cv li b{display:block;color:var(--ink);font-weight:600}
.cv li span{color:var(--muted);font-size:.82rem}
.join{margin-top:18px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:26px 30px;border-radius:20px;background:linear-gradient(120deg,var(--hero-2),#0f4c8a);color:#fff}
.join h3{margin:0 0 4px;font-size:1.3rem}
.join p{margin:0;color:#c2d3ea}

/* ---------- contact / footer ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact .card h3{display:flex;align-items:center;gap:10px}
.contact .book{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.contact .book p{margin-bottom:0}
footer{background:var(--hero-1);color:var(--hero-muted);padding:44px 0;font-size:.88rem}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
footer .brand span{border-color:rgba(255,255,255,.2)}
footer a{color:#fff}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .grid3{grid-template-columns:repeat(2,1fr)}
  .cv{grid-template-columns:1fr 1fr}
  .pub.fig{grid-template-columns:96px 1fr}
  .pub.fig figure{grid-column:2}
}
@media (max-width:820px){
  .links{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px 16px}
  .links.open{display:flex}
  .links a,.nav .links a{color:var(--ink-2)}
  .menu-btn{display:grid}
  .hero{padding:128px 0 64px}
  .hero .wrap{grid-template-columns:1fr}
  .hero-mark{display:none}
  .stats{grid-template-columns:1fr 1fr;margin-top:40px}
  .stats div:nth-child(3){border-left:0}
  .stats div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1)}
  .news,.contact{grid-template-columns:1fr}
  .lead-card{grid-template-columns:1fr;padding:22px}
  .lead-card .photo{max-width:220px}
  .sec{padding:64px 0}
}
@media (max-width:560px){
  .grid3,.cv{grid-template-columns:1fr}
  .pub,.pub.fig{grid-template-columns:1fr}
  .pub.fig figure{grid-column:auto}
  .venue{justify-self:start;padding:5px 10px}
  .brand span{display:none}
}

/* ======== multi-page additions ======== */
.links a.active{color:#fff;background:rgba(255,255,255,.1)}

/* home hero with full lab logo */
.hero .wrap.hero-grid{grid-template-columns:1fr}
.hero-logo{width:min(560px,92%);height:auto;filter:invert(1) drop-shadow(0 0 28px rgba(111,182,255,.35));margin:0 0 28px;display:block}
.hero h1.tagline{font-size:clamp(2rem,4.4vw,3.3rem);max-width:900px;margin:10px 0 16px}

/* inner page header */
.page-hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(900px 420px at 90% 0%,#12407a 0%,transparent 60%),linear-gradient(160deg,var(--hero-1),var(--hero-2));padding:136px 0 64px}
.page-hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.45}
.page-hero .wrap{position:relative}
.page-hero .eyebrow{color:#7fc4ff}
.page-hero h1{font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.05;margin:10px 0 12px}
.page-hero p{color:var(--hero-muted);max-width:640px;margin:0;font-size:1.05rem}
.page-hero .wm{position:absolute;right:-30px;bottom:-60px;width:340px;opacity:.08;filter:invert(1);pointer-events:none}
.crumbs{font-size:.85rem;color:var(--hero-muted)}
.crumbs a{color:#cfe3ff}

/* section footer link */
.more{display:inline-flex;align-items:center;gap:6px;font-weight:600;margin-top:24px}
.more svg{width:16px;height:16px;transition:transform .15s}
.more:hover{text-decoration:none}
.more:hover svg{transform:translateX(3px)}
a.card{display:block;color:inherit}
a.card:hover{text-decoration:none}

/* research detail rows */
.area{display:grid;grid-template-columns:300px 1fr;gap:36px;padding:36px 0;border-top:1px solid var(--line)}
.area:first-child{border-top:0;padding-top:0}
.area .num{font-family:"Space Grotesk";font-weight:700;color:var(--accent);font-size:.9rem;letter-spacing:.1em}
.area h2{font-size:1.6rem;margin:6px 0 12px;line-height:1.15}
.area .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:14px}
.area .ico svg{width:26px;height:26px}
.area p{color:var(--ink-2);margin:0 0 14px}
.area h4{margin:0 0 10px;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.papers{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.papers li{display:flex;gap:12px;align-items:baseline;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);font-size:.94rem;line-height:1.45}
.papers li a{color:var(--ink);font-weight:600}
.papers li a:hover{color:var(--accent);text-decoration:none}
.mini{flex:none;font-family:"Space Grotesk";font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:6px;color:#fff;white-space:nowrap}
.mini.Journal{background:var(--journal)}
.mini.Conference{background:var(--conf)}

/* home split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.news.one{grid-template-columns:1fr}


@media (max-width:820px){
  .area{grid-template-columns:1fr;gap:16px}
  .split{grid-template-columns:1fr}
  .page-hero{padding:112px 0 48px}
  .page-hero .wm{width:220px}
}

/* ======== modern layer ======== */
:root{--preprint:#b4540a;--grad:linear-gradient(100deg,#5fa8ff,#3ee0d0 50%,#a78bfa)}
:root[data-theme="dark"]{--preprint:#f0a24b}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--preprint:#f0a24b}}
body{animation:pagein .5s ease both}
@keyframes pagein{from{opacity:0}to{opacity:1}}
::selection{background:#3ee0d0;color:#04121f}

/* floating glass nav */
.nav{inset:14px 0 auto 0;border:0;background:transparent}
.nav .wrap{height:60px;border-radius:18px;padding:0 10px 0 18px;transition:background .3s,box-shadow .3s,border-color .3s;border:1px solid transparent}
.nav.solid{background:transparent;backdrop-filter:none;border:0}
/* scrolled: dark navy glass pill (matches Safari's navy bar), text stays white */
.nav .wrap{position:relative}
.nav.solid .wrap{background:color-mix(in srgb,var(--hero-1) 86%,transparent);backdrop-filter:blur(22px) saturate(1.5);-webkit-backdrop-filter:blur(22px) saturate(1.5);border-color:rgba(255,255,255,.1);box-shadow:0 14px 34px rgba(3,8,18,.28),inset 0 1px 0 rgba(255,255,255,.06)}
/* reading progress: a thin gradient line along the bottom edge of the pill */
.nav .wrap::after{content:"";position:absolute;left:18px;right:18px;bottom:-1px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(var(--prog,0));transform-origin:left;opacity:0;transition:opacity .3s}
.nav.solid .wrap::after{opacity:1}
@media (max-width:820px){.nav .links a.active{color:var(--accent);background:var(--accent-soft)}}   /* light drop-down menu on phones */
.links a{border-radius:999px}
@media (max-width:820px){.nav{inset:10px 0 auto 0}.links{top:66px;left:16px;right:16px;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}}

/* hero aurora + pill */
.aurora{position:absolute;inset:-20%;filter:blur(70px);opacity:.7;pointer-events:none}
.aurora i{position:absolute;border-radius:50%;mix-blend-mode:screen;animation:drift 18s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:46vw;height:46vw;left:48%;top:4%;background:#1f6fff;opacity:.45}
.aurora i:nth-child(2){width:34vw;height:34vw;left:66%;top:36%;background:#13c8b5;opacity:.35;animation-duration:22s}
.aurora i:nth-child(3){width:30vw;height:30vw;left:22%;top:52%;background:#7c4dff;opacity:.28;animation-duration:26s}
@keyframes drift{to{transform:translate(-8%,6%) scale(1.15)}}
.pill{display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);backdrop-filter:blur(6px);font-size:.82rem;font-weight:600;letter-spacing:.04em;color:#cfe3ff}
/* live dot: the glow is a round ring that grows and fades (an animated box-shadow rendered square in iOS Safari
   inside the blurred pill) */
.pill .dot{position:relative;flex:none;width:8px;height:8px;border-radius:50%;background:#3ee0d0;box-shadow:0 0 6px rgba(62,224,208,.7)}
.pill .dot::after{content:"";position:absolute;inset:0;border-radius:50%;background:#3ee0d0;opacity:.55;transform:translateZ(0);animation:ping 2s cubic-bezier(.2,.6,.3,1) infinite}
@keyframes ping{0%{transform:scale(1);opacity:.55}70%,100%{transform:scale(3.4);opacity:0}}
/* highlighted words in the home tagline: colours flow blue → teal → purple → blue; the gradient ends on the colour it
   starts with, so the repeating tile has no visible seam. inline-block + padding keep Vietnamese accents inside the
   paint box; translateZ gives the clipped text its own layer so Safari keeps it after a theme switch */
.hero h1 em{display:inline-block;padding:.1em .02em .06em;margin:-.1em -.02em -.06em;
  background:linear-gradient(90deg,#6fb6ff 0%,#3ee0d0 33%,#a78bfa 66%,#6fb6ff 100%) 0 50%/200% 100% repeat-x;
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
  transform:translateZ(0);will-change:background-position;animation:hero-flow 5s linear infinite}
@keyframes hero-flow{to{background-position:200% 50%}}
@media (prefers-reduced-motion:reduce){.hero h1 em{animation:none}}
.hero-logo{animation:float 7s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-6px)}}
.btn.primary{box-shadow:0 8px 24px rgba(95,168,255,.25)}
.stats{background:rgba(255,255,255,.04);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.stats b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* venue marquee */
.marquee{overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-2);-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee .track{display:flex;width:max-content;animation:scroll 32s linear infinite}
.marquee span{font-family:"Space Grotesk";font-weight:700;font-size:1.05rem;color:var(--muted);padding:18px 34px;white-space:nowrap;letter-spacing:.02em}
.marquee span::before{content:"◆";color:var(--accent);font-size:.6rem;margin-right:34px;vertical-align:3px;opacity:.7}
@keyframes scroll{to{transform:translateX(-50%)}}

/* cards: gradient border + cursor spotlight */
.card,.spot,.lead-card{position:relative;isolation:isolate}
.card::before,.spot::before,.lead-card::before{content:"";position:absolute;inset:0;border-radius:inherit;z-index:-1;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),color-mix(in srgb,var(--accent) 14%,transparent),transparent 60%)}
.card:hover::before,.spot:hover::before,.lead-card:hover::before{opacity:1}
.card:hover{box-shadow:0 18px 40px rgba(10,102,216,.12)}


/* featured paper */
.spot{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;padding:28px;border-radius:24px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
.spot figure{margin:0;border-radius:16px;overflow:hidden;background:#fff;border:1px solid var(--line)}
.spot figure img{display:block;width:100%;height:auto;transition:transform .5s}
.spot:hover figure img{transform:scale(1.03)}
.spot h3{font-size:1.45rem;line-height:1.25;margin:10px 0 12px}
.spot p{color:var(--ink-2);margin:0 0 20px}
.spot .btn.ghost{border-color:var(--line);color:var(--ink)}
.spot .btn.ghost:hover{background:var(--bg-2)}
.spot .btn.primary{background:var(--accent);color:#fff}

/* preprint styling */
.venue.Preprint,.mini.Preprint{background:var(--preprint)}
.chip.ax{border-color:color-mix(in srgb,#b31b1b 35%,var(--line));color:#b31b1b}
:root[data-theme="dark"] .chip.ax{color:#ff8a80}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .chip.ax{color:#ff8a80}}
.pub{transition:border-color .2s,box-shadow .2s,transform .2s}
.pub:hover{border-color:color-mix(in srgb,var(--accent) 35%,var(--line));box-shadow:0 10px 28px rgba(10,102,216,.08);transform:translateY(-1px)}
.news-item{transition:transform .2s,border-color .2s}
.news-item:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}

/* page hero polish */
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(111,182,255,.5),transparent)}
.page-hero h1{width:fit-content;background:linear-gradient(100deg,#fff 0%,#e3eeff 30%,#9cc9ff 62%,#7ff0e4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* simple footer (as in the earlier version) */
.site-footer{background:var(--hero-1);color:var(--hero-muted);padding:36px 0;font-size:.88rem}
.site-footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.site-footer .brand span{border-color:rgba(255,255,255,.2)}
.flinks{display:flex;gap:18px;flex-wrap:wrap}
.site-footer a{color:#d3e2f7}
.flinks a{color:var(--hero-muted)}
.flinks a:hover{color:#fff;text-decoration:none}

@media (max-width:980px){
  .spot{grid-template-columns:1fr}
}
@media (max-width:560px){
  .site-footer .wrap{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion: reduce){
  .aurora i,.marquee .track,.hero h1 em,.hero-logo,.pill .dot,.pill .dot::after,body{animation:none}
}

/* BibTeX panel: Copy sits under the code */
.bibbox{display:none;margin-top:10px}
.bibbox.open{display:block;animation:pagein .2s ease}
.bibbox pre.bib{display:block;margin:0}
.bibbox .copy{margin-top:8px}
.chip[aria-expanded="true"]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

/* research cards: even 3×2 grid */
.rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:r}
.rcard{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-direction:column;padding:28px;border-radius:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s,border-color .35s;transition-delay:0s}
.rcard.reveal{transition:opacity .6s ease var(--d),transform .6s ease var(--d)}
.rcard.reveal.in{transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s,border-color .35s}
.rcard::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .3s;background:radial-gradient(380px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--accent) 16%,transparent),transparent 65%)}
.rcard::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .45s ease}
.rcard:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--accent) 35%,var(--line));box-shadow:0 22px 50px rgba(10,102,216,.14)}
.rcard:hover::before{opacity:1}
.rcard:hover::after{transform:scaleX(1)}
.rtop{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:26px}
.rnum{font-family:"Space Grotesk";font-weight:700;font-size:2.4rem;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.9}
.rcard .ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);transition:transform .35s,background .35s,color .35s}
.rcard .ico svg{width:24px;height:24px}
.rcard:hover .ico{transform:rotate(-8deg) scale(1.08);background:var(--accent);color:#fff}
.rcard h3{font-size:1.2rem;margin:0 0 10px}
.rcard p{margin:0 0 20px;color:var(--ink-2);font-size:.94rem;flex:1}
.kw{list-style:none;margin:0;padding:16px 0 0;border-top:1px dashed var(--line);display:flex;flex-wrap:wrap;gap:6px}
.kw li{font-size:.76rem;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--bg-2);color:var(--muted);border:1px solid var(--line)}
@media (max-width:980px){.rgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.rgrid{grid-template-columns:1fr}.rtop{margin-bottom:18px}}

/* hero: cursor glow + parallax */
.hero{--px:0;--py:0}
.hero .cursor-glow{position:absolute;left:0;top:0;width:520px;height:520px;margin:-260px 0 0 -260px;border-radius:50%;pointer-events:none;opacity:0;transition:opacity .4s;
  background:radial-gradient(circle,rgba(95,168,255,.22),rgba(62,224,208,.08) 40%,transparent 70%);transform:translate3d(var(--gx,50vw),var(--gy,50vh),0);will-change:transform}
.hero:hover .cursor-glow{opacity:1}
.hero-logo{transform:translate3d(calc(var(--px)*14px),calc(var(--py)*10px),0);transition:transform .25s ease-out;animation:none}
.hero .tagline,.hero .lead{transform:translate3d(calc(var(--px)*-6px),calc(var(--py)*-4px),0);transition:transform .3s ease-out}
.aurora{transform:translate3d(calc(var(--px)*-30px),calc(var(--py)*-24px),0);transition:transform .6s ease-out}
@media (prefers-reduced-motion: reduce){.hero-logo,.hero .tagline,.hero .lead,.aurora{transform:none}.hero .cursor-glow{display:none}}

.stats{grid-template-columns:repeat(3,1fr)}
@media (max-width:820px){.stats{grid-template-columns:repeat(3,1fr)}.stats div:nth-child(3){border-left:1px solid rgba(255,255,255,.1)}.stats div:nth-child(n+3){border-top:0}.stats div{padding:16px 14px}.stats b{font-size:1.6rem}}

/* stat counters: small pop when they reach their final value */
.stats b{display:inline-block;font-variant-numeric:tabular-nums}
.stats b.pop{animation:pop .45s cubic-bezier(.3,1.6,.5,1)}
@keyframes pop{40%{transform:scale(1.18)}100%{transform:none}}

/* stat: number and label side by side with breathing room */
.stats div{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.stats div b{margin:0}
@media (max-width:620px){.stats div{gap:6px}}

/* stats bar spans the full width; number + label always on one line */
.hero .wrap:not(.hero-grid){display:block}
.stats div{flex-wrap:nowrap;align-items:baseline;gap:12px;white-space:nowrap}
.stats span{white-space:nowrap}
@media (max-width:820px){
  .stats{grid-template-columns:1fr;margin-top:36px}
  .stats div,.stats div:nth-child(3){border-left:0;border-top:1px solid rgba(255,255,255,.1);padding:14px 20px}
  .stats div:first-child{border-top:0}
  .stats b{font-size:1.6rem}
}

/* each stat centred in its cell so the three line up evenly */
.stats div{justify-content:center;align-items:center}
.stats b{min-width:1.3em;text-align:right}
@media (max-width:820px){.stats div{justify-content:flex-start}.stats b{min-width:1.4em}}

/* ======== site search ======== */
.search-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 8px 0 12px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:rgba(255,255,255,.85);font:inherit;font-size:.86rem;cursor:pointer;transition:border-color .2s,background .2s}
.search-btn:hover{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.1)}
.search-btn svg{width:16px;height:16px}
.search-btn kbd{font:600 .7rem Inter,sans-serif;padding:3px 6px;border-radius:6px;background:rgba(255,255,255,.12);color:inherit}
@media (max-width:980px){.search-btn span,.search-btn kbd{display:none}.search-btn{width:38px;padding:0;justify-content:center}}

.sk-open{overflow:hidden}
.sk{position:fixed;inset:0;z-index:100;display:flex;justify-content:center;align-items:flex-start;padding:10vh 16px 16px}
.sk[hidden]{display:none}
.sk-back{position:absolute;inset:0;background:rgba(4,10,20,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;transition:opacity .16s}
.sk-panel{position:relative;width:min(680px,100%);max-height:72vh;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.35);overflow:hidden;transform:translateY(-8px) scale(.98);opacity:0;transition:transform .16s ease,opacity .16s ease}
.sk.show .sk-back{opacity:1}
.sk.show .sk-panel{transform:none;opacity:1}
.sk-bar{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.sk-bar svg{width:20px;height:20px;color:var(--accent);flex:none}
.sk-bar input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font:inherit;font-size:1.05rem}
.sk-bar input::-webkit-search-cancel-button{display:none}
.sk-esc{font:600 .72rem Inter,sans-serif;padding:4px 8px;border-radius:6px;border:1px solid var(--line);background:var(--bg-2);color:var(--muted);cursor:pointer}
.sk-res{overflow-y:auto;padding:8px;overscroll-behavior:contain}
.sk-group{font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:12px 10px 6px}
.sk-item{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:10px 12px;border-radius:10px;color:var(--ink);scroll-margin:8px}
.sk-item:hover{text-decoration:none}
.sk-item.on{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}
.sk-type{font:700 .64rem Inter,sans-serif;letter-spacing:.06em;text-transform:uppercase;padding:4px 7px;border-radius:6px;color:#fff;background:var(--accent);min-width:78px;text-align:center}
.sk-type.News{background:#0f8a83}.sk-type.Research{background:#7c4dff}.sk-type.People{background:#c2410c}.sk-type.Page{background:#475569}
.sk-main{min-width:0}
.sk-main b{display:block;font-weight:600;font-size:.93rem;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sk-main small{display:block;color:var(--muted);font-size:.8rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sk-meta{font-size:.75rem;color:var(--muted);white-space:nowrap}
.sk mark{background:color-mix(in srgb,#3ee0d0 35%,transparent);color:inherit;border-radius:3px;padding:0 1px}
.sk-empty{padding:36px 16px;text-align:center;color:var(--muted)}
.sk-foot{display:flex;gap:16px;padding:10px 16px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted);background:var(--bg-2)}
.sk-foot kbd{font:600 .68rem Inter,sans-serif;padding:2px 6px;border-radius:5px;border:1px solid var(--line);background:var(--surface);margin-right:3px}
@media (max-width:620px){
  .sk{padding:12px}
  .sk-panel{max-height:86vh}
  .sk-item{grid-template-columns:1fr}
  .sk-type{justify-self:start;min-width:0}
  .sk-meta,.sk-foot{display:none}
}
.news-item.flash{animation:flash 2.2s ease}
@keyframes flash{0%,40%{box-shadow:0 0 0 3px var(--accent);border-color:var(--accent)}}


/* nav: menu links sit on the right, next to search + theme */
@media (min-width:821px){
  .nav .wrap{justify-content:flex-start}
  .links{margin-left:auto;margin-right:12px}
}

/* home: News + Recent papers as two matching panels */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.duo > *{min-width:0}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:26px 28px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.panel-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.panel-head h2{font-size:1.45rem;margin:4px 0 0;line-height:1.15}
.panel-head .eyebrow{font-size:.7rem}
.view-all{display:inline-flex;align-items:center;gap:6px;font-size:.84rem;font-weight:600;white-space:nowrap;padding:6px 12px;border-radius:999px;background:var(--accent-soft)}
.view-all:hover{text-decoration:none}
.view-all svg{width:14px;height:14px;transition:transform .15s}
.view-all:hover svg{transform:translateX(3px)}
/* news timeline */
.tl{list-style:none;margin:0;padding:6px 0 0;position:relative}
.tl::before{content:"";position:absolute;left:5px;top:22px;bottom:22px;width:2px;background:linear-gradient(var(--accent),color-mix(in srgb,var(--accent) 10%,transparent));border-radius:2px}
.tl li a{position:relative;display:block;padding:12px 8px 12px 26px;border-radius:12px;color:inherit}
.tl li a::before{content:"";position:absolute;left:0;top:18px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:2px solid var(--accent)}
.tl li:first-child a::before{background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.tl li a:hover{text-decoration:none;background:var(--bg-2)}
.tl time{display:block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:2px}
.tl b{display:block;font-size:.95rem;line-height:1.35;color:var(--ink)}
.tl span{display:block;font-size:.84rem;color:var(--muted);line-height:1.45;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* recent papers list */
.plist{padding-top:4px}
.prow{display:block;padding:14px 10px;border-bottom:1px solid var(--line);color:inherit;border-radius:10px;transition:background .2s}
.prow:last-child{border-bottom:0}
.prow:hover{text-decoration:none;background:var(--bg-2)}
.prow b{display:block;font-size:.95rem;line-height:1.38;color:var(--ink);margin:6px 0 3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prow:hover b{color:var(--accent)}
.prow small{display:block;font-size:.8rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.prow small u{text-decoration:none;color:var(--ink-2);font-weight:600}
.ptag{display:inline-block;font-family:"Space Grotesk";font-size:.7rem;font-weight:700;letter-spacing:.03em;padding:3px 9px;border-radius:999px;color:#fff}
.ptag.Journal{background:var(--journal)}
.ptag.Conference{background:var(--conf)}
@media (max-width:900px){.duo{grid-template-columns:1fr}}
@media (max-width:560px){.panel{padding:20px 18px 10px;border-radius:18px}.panel-head h2{font-size:1.25rem}.tl span{white-space:normal}}

/* Latest updates: hover/focus effects per item */
.tl li a{transition:background .25s ease,transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s ease;padding-right:40px}
.tl li a::before{transition:transform .25s cubic-bezier(.3,1.6,.5,1),background .25s,box-shadow .25s}
.tl li a::after{content:"→";position:absolute;right:14px;top:50%;transform:translate(-8px,-50%);opacity:0;color:var(--accent);font-weight:700;transition:opacity .2s,transform .25s}
.tl li a:hover,.tl li a:focus-visible{background:linear-gradient(90deg,var(--accent-soft),transparent 85%);transform:translateX(6px);box-shadow:inset 3px 0 0 var(--accent);outline:none}
.tl li a:hover::before,.tl li a:focus-visible::before{background:var(--accent);transform:scale(1.35);box-shadow:0 0 0 5px color-mix(in srgb,var(--accent) 18%,transparent),0 0 16px color-mix(in srgb,var(--accent) 60%,transparent)}
.tl li a:hover::after,.tl li a:focus-visible::after{opacity:1;transform:translate(0,-50%)}
.tl li a b{transition:color .2s}
.tl li a:hover b,.tl li a:focus-visible b{color:var(--accent)}
.tl li a span{transition:color .2s}
.tl li a:hover span{color:var(--ink-2);white-space:normal}
.tl li a time{transition:letter-spacing .25s}
.tl li a:hover time{letter-spacing:.12em}
/* the other items dim slightly so the hovered one stands out */
@media (hover:hover){
  .tl:hover li a:not(:hover){opacity:.55}
  .tl li a{transition:background .25s ease,transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s ease,opacity .25s}
}
@media (prefers-reduced-motion: reduce){.tl li a,.tl li a::before,.tl li a::after{transition:none}.tl li a:hover{transform:none}}
/* keep the dot on the line while the item slides */
.tl li a:hover::before,.tl li a:focus-visible::before{left:-6px}
.tl li a::before{transition:transform .25s cubic-bezier(.3,1.6,.5,1),background .25s,box-shadow .25s,left .25s cubic-bezier(.2,.7,.2,1)}

/* Recent papers: same hover language as Latest updates */
.prow{position:relative;padding-right:40px;transition:background .25s ease,transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s ease,opacity .25s}
.prow::after{content:"↗";position:absolute;right:14px;top:50%;transform:translate(-8px,-50%);opacity:0;color:var(--accent);font-weight:700;transition:opacity .2s,transform .25s}
.prow:hover,.prow:focus-visible{background:linear-gradient(90deg,var(--accent-soft),transparent 85%);transform:translateX(6px);box-shadow:inset 3px 0 0 var(--accent);outline:none;border-bottom-color:transparent}
.prow:hover::after,.prow:focus-visible::after{opacity:1;transform:translate(0,-50%)}
.prow b{transition:color .2s}
.prow:hover b,.prow:focus-visible b{color:var(--accent);-webkit-line-clamp:unset}
.prow small{transition:color .2s}
.prow:hover small{color:var(--ink-2);white-space:normal}
.ptag{transition:transform .25s cubic-bezier(.3,1.6,.5,1),box-shadow .25s}
.prow:hover .ptag{transform:scale(1.08);box-shadow:0 0 0 4px color-mix(in srgb,currentColor 0%,transparent),0 4px 14px color-mix(in srgb,var(--accent) 45%,transparent)}
@media (prefers-reduced-motion: reduce){.prow,.prow::after,.ptag{transition:none}.prow:hover{transform:none}}

/* CV button on people cards */

/* ======== People: Director ======== */
.dir{position:relative;isolation:isolate;overflow:hidden;display:grid;grid-template-columns:330px 1fr;gap:44px;align-items:start;padding:36px;border-radius:28px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
.dir::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .3s;background:radial-gradient(520px circle at var(--mx,30%) var(--my,30%),color-mix(in srgb,var(--accent) 10%,transparent),transparent 60%)}
.dir:hover::before{opacity:1}
.dir::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;z-index:-1;background:url(rasl-logo.png) center/contain no-repeat;opacity:.05;filter:var(--logo-filter)}
.dir-photo{position:relative;justify-self:center}
.dir-photo .frame{width:280px;aspect-ratio:1;border-radius:28px;padding:5px;background:linear-gradient(135deg,#5fa8ff,#3ee0d0 50%,#a78bfa);box-shadow:0 24px 50px rgba(10,102,216,.22);transform:rotate(-2deg);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.dir:hover .dir-photo .frame{transform:rotate(0) scale(1.02)}
.dir-photo .frame img{width:100%;height:100%;object-fit:cover;border-radius:23px;display:block;background:var(--bg-2)}
.dir-photo .badge{position:absolute;right:-12px;bottom:-12px;width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:var(--hero-2);box-shadow:0 10px 24px rgba(6,16,31,.3);border:3px solid var(--surface)}
.dir-photo .badge img{width:40px;height:40px;filter:invert(1)}
.dir-body .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:var(--accent-soft)}
.dir-body h3{font-size:clamp(1.8rem,3.2vw,2.4rem);line-height:1.05;margin:14px 0 6px}
.dir-body .role{font-weight:600;color:var(--accent);margin:0 0 14px}
.dir-body p{color:var(--ink-2);margin:0 0 16px;text-align:justify;hyphens:auto}
/* research topics: numbered tiles 01–06 with the home-page icons, like the CV */
.dir-tags{list-style:none;margin:0 0 18px;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.dir-tags li{display:flex;align-items:center;gap:8px;padding:8px 11px;border:1px solid var(--line);border-radius:10px;background:var(--bg-2);font-size:.8rem;font-weight:600;line-height:1.3;color:var(--ink);transition:border-color .25s,transform .25s}
.dir-tags li:hover{border-color:var(--accent);transform:translateY(-1px)}
.dir-tags em{font:700 .74rem "Space Grotesk",sans-serif;font-style:normal;color:var(--accent);min-width:17px}
.dir-tags svg{width:16px;height:16px;flex:none;color:var(--accent)}
@media (max-width:620px){.dir-tags{grid-template-columns:1fr}}
.dir .socials{margin-top:0}
/* left column: photo, then links and numbers, so it is about as tall as the bio column */
.dir-side{display:flex;flex-direction:column;align-items:center;gap:26px}
.dir-side .socials{justify-content:center;flex-wrap:nowrap;gap:6px;margin-top:6px}
.dir-side .socials a{padding:7px 11px;white-space:nowrap}
.dir-body h3{margin-top:4px}
/* paper numbers: the total, a bar split by type, and a legend (journals | conferences) */
.pstat{position:relative;overflow:hidden;width:100%;padding:16px 18px 15px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(140deg,color-mix(in srgb,var(--accent) 7%,var(--surface)),var(--surface) 60%);box-shadow:var(--shadow)}
.pstat::after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent-2) 12%,transparent),transparent 70%);pointer-events:none}
.pstat-top{display:flex;align-items:baseline;gap:10px}
.pstat-top b{font:700 2.6rem/1 "Space Grotesk",sans-serif;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.pstat-top span{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.pstat-bar{display:flex;gap:4px;height:8px;margin:14px 0 12px}
.pstat-bar i{flex:var(--n) 1 0;border-radius:999px;transform-origin:left;transition:transform .9s cubic-bezier(.2,.7,.2,1) .25s}
.pstat-bar .j{background:var(--journal)}
.pstat-bar .c{background:linear-gradient(90deg,var(--conf),var(--accent-2))}
.dir:not(.in) .pstat-bar i,.pstat.reveal:not(.in) .pstat-bar i{transform:scaleX(0)}
.pstat.wide{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:32px;padding:20px 28px;margin:0 0 22px}
.pstat.wide .pstat-top b{font-size:3rem}
.pstat.wide .pstat-top{padding-right:32px;border-right:1px solid var(--line)}
.pstat.wide .pstat-bar{height:10px;margin:0 0 12px}
.pstat.wide .pstat-legend{justify-content:flex-start;gap:30px}
.pstat.wide .pstat-legend div{font-size:.86rem}
.pstat.wide .pstat-legend b{font-size:1.2rem}
@media (max-width:620px){
  .pstat.wide{grid-template-columns:1fr;gap:14px;padding:16px 18px}
  .pstat.wide .pstat-top{padding:0;border:0}
  .pstat.wide .pstat-top b{font-size:2.6rem}
  .pstat.wide .pstat-legend{justify-content:space-between}
}
.pstat-legend{display:flex;justify-content:space-between;gap:10px}
.pstat-legend div{display:flex;align-items:center;gap:7px;font-size:.8rem;color:var(--muted)}
.pstat-legend i{width:9px;height:9px;border-radius:3px;flex:none}
.pstat-legend .j i{background:var(--journal)}
.pstat-legend .c i{background:var(--conf)}
.pstat-legend b{font:700 1.05rem "Space Grotesk",sans-serif;color:var(--ink)}

.dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.dcard{position:relative;isolation:isolate;overflow:hidden;padding:22px 22px 12px;border-radius:20px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s,border-color .3s}
.dcard::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .3s;background:radial-gradient(320px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--accent) 12%,transparent),transparent 65%)}
.dcard:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 35%,var(--line));box-shadow:0 18px 40px rgba(10,102,216,.12)}
.dcard:hover::before{opacity:1}
.dcard-h{display:flex;align-items:center;gap:10px;padding-bottom:12px;margin-bottom:6px;border-bottom:1px solid var(--line)}
.dcard-h i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.dcard-h i svg{width:17px;height:17px}
.dcard-h h4{margin:0;font:700 .82rem "Space Grotesk";letter-spacing:.12em;text-transform:uppercase}
.dtl{list-style:none;margin:0;padding:0}
.dtl li{padding:10px 0;border-bottom:1px dashed var(--line)}
.dtl li:last-child{border-bottom:0}
.dtl em{display:inline-block;font-style:normal;font-size:.7rem;font-weight:700;letter-spacing:.04em;color:var(--accent);background:var(--accent-soft);padding:2px 8px;border-radius:999px;margin-bottom:5px}
.dtl b{display:block;font-weight:650;font-size:.93rem;line-height:1.35}
.dtl span{display:block;font-size:.84rem;color:var(--muted)}
#people .join{margin-top:18px}

@media (max-width:980px){
  .dir{grid-template-columns:1fr;gap:28px;padding:28px 22px;text-align:left}
  .dir-side{display:contents}                      /* one column: photo, bio, then links and numbers */
  .dir-photo{order:0}.dir-body{order:1}.dir-side .socials{order:2;justify-content:flex-start;margin-top:-6px}.pstat{order:3;margin-top:-10px;max-width:420px}
  .dir-photo .frame{width:220px}
  .dir-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .dir-grid{grid-template-columns:1fr}
}

/* publications search hints */
.qhint{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:-8px 0 18px;font-size:.8rem;color:var(--muted)}
.qhint span{font-weight:600;margin-right:2px}
.qhint button{font:inherit;font-size:.78rem;padding:4px 11px;border-radius:999px;border:1px dashed var(--line);background:transparent;color:var(--ink-2);cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.qhint button:hover{border-color:var(--accent);color:var(--accent);border-style:solid}
.qhint button.on{background:var(--accent);border-color:var(--accent);border-style:solid;color:#fff}
.search input::placeholder{color:var(--muted);opacity:.85}
@media (max-width:560px){.search input::placeholder{font-size:.82rem}}

/* director portrait: background-free photo on a brand gradient */
.dir-photo .frame img{object-fit:cover;object-position:center bottom;background:radial-gradient(120% 90% at 50% 15%,#ffffff 0%,#dcebff 45%,#9cc7ff 100%)}
:root[data-theme="dark"] .dir-photo .frame img{background:radial-gradient(120% 90% at 50% 15%,#2b4f80 0%,#14315a 55%,#0b1d38 100%)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .dir-photo .frame img{background:radial-gradient(120% 90% at 50% 15%,#2b4f80 0%,#14315a 55%,#0b1d38 100%)}}

/* advisor link under each degree */
.dtl a.adv{display:inline-flex;align-items:center;gap:6px;margin-top:4px;font-size:.8rem;font-weight:600;color:var(--accent)}
.dtl a.adv svg{width:14px;height:14px;padding:2px;box-sizing:content-box;border-radius:4px;background:#4285f4;color:#fff}
.dtl a.adv:hover{text-decoration:underline}

/* ======== language switch + footer date ======== */
.lang-sw{display:inline-flex;align-items:center;height:38px;padding:3px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06)}
.lang-sw a{font:700 .74rem Inter,sans-serif;letter-spacing:.04em;padding:0 9px;height:30px;display:grid;place-items:center;border-radius:7px;color:rgba(255,255,255,.75)}
.lang-sw a:hover{text-decoration:none;color:#fff}
.lang-sw a.on{background:#fff;color:#0b1424}
.site-footer .upd{display:inline-block;margin-left:10px;padding-left:10px;border-left:1px solid rgba(255,255,255,.2);color:var(--hero-muted);font-style:italic}
@media (max-width:560px){.site-footer .upd{display:block;margin:6px 0 0;padding:0;border:0}}



/* ======== student application (floating Apply button + form) ======== */
.ap-lock{overflow:hidden}
.ap-fab{position:fixed;right:20px;bottom:20px;z-index:60;display:inline-flex;align-items:center;gap:9px;height:54px;padding:0 20px 0 16px;border:0;border-radius:999px;cursor:pointer;
  font:700 .95rem Inter,sans-serif;color:#fff;background:linear-gradient(135deg,var(--hero-2),#0f4c8a);box-shadow:0 12px 30px rgba(6,16,31,.35);transition:transform .2s}
.ap-fab:hover{transform:translateY(-2px)}
.ap-fab svg{width:22px;height:22px}
.ap-fab::before,.ap-fab::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none}
.ap-fab::before{animation:apGlow 4s ease-out infinite}
.ap-fab::after{background:radial-gradient(closest-side,rgba(111,182,255,.5),transparent);opacity:0;animation:apHalo 4s ease-in-out infinite}
@keyframes apGlow{0%{box-shadow:0 0 0 0 rgba(62,224,208,.6)}45%,100%{box-shadow:0 0 0 16px rgba(62,224,208,0)}}
@keyframes apHalo{0%,100%{opacity:0;transform:scale(1)}20%{opacity:.8;transform:scale(1.15)}45%{opacity:0;transform:scale(1.3)}}
.ap-hint{position:fixed;right:20px;bottom:86px;z-index:60;display:flex;align-items:stretch;max-width:280px;border-radius:14px;background:var(--surface);border:1px solid var(--line);box-shadow:0 14px 34px rgba(6,16,31,.22);animation:apIn .3s cubic-bezier(.2,.8,.2,1)}
.ap-hint[hidden]{display:none}
.ap-hint::after{content:"";position:absolute;right:36px;bottom:-7px;width:12px;height:12px;background:var(--surface);border-right:1px solid var(--line);border-bottom:1px solid var(--line);transform:rotate(45deg)}
.ap-hint.bye{opacity:0;transform:translateY(6px);transition:opacity .4s,transform .4s}
.ap-hint-text{font:inherit;text-align:left;border:0;background:transparent;cursor:pointer;padding:10px 4px 10px 14px;color:var(--ink)}
.ap-hint-text b{display:block;font-size:.88rem;white-space:nowrap}
.ap-hint-text span{display:block;font-size:.76rem;color:var(--muted);margin-top:1px}
.ap-hint-text:hover b{color:var(--accent)}
.ap-hint-x{border:0;background:transparent;color:var(--muted);font-size:1.1rem;line-height:1;padding:6px 10px;cursor:pointer;align-self:flex-start}
@keyframes apIn{from{opacity:0;transform:translateY(10px) scale(.97)}}

.ap-modal{position:fixed;inset:0;z-index:110;display:flex;justify-content:flex-end}
.ap-modal[hidden]{display:none}
.ap-back{position:absolute;inset:0;background:rgba(4,10,20,.5);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);opacity:0;transition:opacity .2s}
.ap-panel{position:relative;width:min(640px,100%);height:100%;overflow-y:auto;background:var(--bg);box-shadow:-20px 0 60px rgba(6,16,31,.25);transform:translateX(30px);opacity:0;transition:transform .25s cubic-bezier(.2,.8,.2,1),opacity .2s;overscroll-behavior:contain}
.ap-modal.show .ap-back{opacity:1}
.ap-modal.show .ap-panel{transform:none;opacity:1}
.ap-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;gap:14px;padding:18px 22px;color:#fff;background:radial-gradient(300px 140px at 95% 0%,rgba(62,224,208,.3),transparent 60%),linear-gradient(135deg,var(--hero-1),var(--hero-2))}
.ap-head img{width:38px;height:38px;filter:invert(1);flex:none}
.ap-head h2{font-size:1.3rem;margin:0}
.ap-head p{margin:2px 0 0;font-size:.82rem;color:#b9cde8}
.ap-head > div{flex:1}
.ap-x{flex:none;width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:transparent;color:#fff;font-size:1.4rem;line-height:1;cursor:pointer}
.ap-form{padding:6px 22px 0}
.ap-sec{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px 18px 8px;margin:14px 0}
.ap-sec h3{display:flex;align-items:center;gap:10px;font-size:1rem;margin:0 0 12px}
.ap-sec h3 em{font-style:normal;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;font:700 .78rem "Space Grotesk";color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.ap-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px}
.ap-f{display:flex;flex-direction:column;gap:5px;margin-bottom:10px;min-width:0;border:0;padding:0}
.ap-f.full,.ap-f:not(.half){grid-column:1/-1}
.ap-f > span,.ap-f legend{font-size:.82rem;font-weight:600;color:var(--ink-2);padding:0}
.ap-req{font-style:normal;color:#e5484d;margin-left:3px}
.ap-f input:not([type=checkbox]):not([type=radio]),.ap-f select,.ap-f textarea{font:inherit;font-size:.92rem;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2);color:var(--ink);width:100%}
.ap-f textarea{resize:vertical;min-height:84px;line-height:1.5}
.ap-f input:focus,.ap-f select:focus,.ap-f textarea:focus{outline:2px solid color-mix(in srgb,var(--accent) 40%,transparent);border-color:var(--accent);background:var(--surface)}
.ap-opts{display:flex;flex-wrap:wrap;gap:7px;margin-top:4px}
.ap-opt{position:relative;cursor:pointer}
.ap-opt input{position:absolute;opacity:0;pointer-events:none}
.ap-opt span{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;border:1px solid var(--line);background:var(--bg-2);font-size:.84rem;color:var(--ink-2);transition:all .15s}
.ap-opt:hover span{border-color:var(--accent);color:var(--accent)}
.ap-opt input:checked + span{background:var(--accent);border-color:var(--accent);color:#fff}
.ap-chips .ap-opt input:checked + span::before{content:"✓";font-weight:700}
.ap-opt input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.ap-check{flex-direction:row;align-items:flex-start;gap:10px;font-size:.88rem;color:var(--ink-2)}
.ap-check input{width:18px;height:18px;margin-top:2px;accent-color:var(--accent);flex:none}
.ap-check .ap-err{flex-basis:100%}
.ap-err{color:#e5484d;font-size:.76rem;min-height:0}
.ap-err:empty{display:none}
.ap-f.bad input:not([type=checkbox]):not([type=radio]),.ap-f.bad select,.ap-f.bad textarea{border-color:#e5484d}
.ap-foot{position:sticky;bottom:0;display:flex;align-items:center;gap:10px;padding:14px 0 18px;margin-top:6px;background:linear-gradient(transparent,var(--bg) 30%)}
.ap-saved{flex:1;font-size:.76rem;color:var(--muted)}
.ap-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 .9rem Inter,sans-serif;padding:11px 18px;border-radius:11px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;text-decoration:none}
.ap-btn:hover{text-decoration:none;border-color:var(--accent);color:var(--accent)}
.ap-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(10,102,216,.25)}
.ap-btn.primary:hover{color:#fff;filter:brightness(1.07)}
.ap-btn.ghost{background:transparent}
.ap-btn svg{width:17px;height:17px}
.ap-done{padding:34px 26px;text-align:center}
.ap-ok{width:64px;height:64px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#16a34a,#3ee0d0);box-shadow:0 10px 26px rgba(22,163,74,.3)}
.ap-ok svg{width:32px;height:32px}
.ap-done h3{font-size:1.35rem;margin:0 0 8px}
.ap-done p{color:var(--ink-2);margin:0 0 20px}
.ap-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.ap-preview{margin:22px 0 0;text-align:left;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.ap-preview summary{cursor:pointer;padding:10px 14px;font-weight:600;font-size:.88rem}
.ap-preview pre{margin:0;padding:0 14px 14px;white-space:pre-wrap;font:.8rem/1.55 ui-monospace,Menlo,monospace;color:var(--ink-2);max-height:320px;overflow:auto}
.ap-link{margin-top:16px;border:0;background:transparent;color:var(--accent);font:600 .88rem Inter,sans-serif;cursor:pointer}
@media (max-width:620px){
  .ap-fab{right:14px;bottom:14px;height:50px;padding:0 16px 0 13px}
  .ap-hint{right:14px;bottom:76px;max-width:230px}
  .ap-hint-text span{display:none}
  .ap-panel{width:100%}
  .ap-form{padding:4px 14px 0}
  .ap-grid{grid-template-columns:1fr}
  .ap-head{padding:14px 16px}
}
@media (prefers-reduced-motion: reduce){.ap-fab::before,.ap-fab::after,.ap-hint{animation:none}.ap-panel,.ap-back{transition:none}}
@media print{.ap-fab,.ap-hint,.ap-modal{display:none}}

/* ======== 404 ======== */
.page-hero.nf{min-height:100vh;display:flex;align-items:center;padding:120px 0 80px}
.nf-code{font:700 clamp(6rem,18vw,11rem)/1 "Space Grotesk",sans-serif;letter-spacing:-.04em;background:linear-gradient(90deg,#6fb6ff,#3ee0d0 55%,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:6px}
.page-hero.nf h1{font-size:clamp(1.8rem,4vw,2.8rem)}
.page-hero.nf p span{display:block;margin-top:4px;color:#8fa6c6}
.page-hero.nf .cta{margin-top:28px}
.page-hero.nf .btn.ghost{border-color:rgba(255,255,255,.28);color:#fff}

/* ======== opening animation (home) ======== */
.intro{display:none}
.intro-on body{overflow:hidden}
.intro-on .intro{display:block;position:fixed;inset:0;z-index:300;
  background:radial-gradient(900px 520px at 80% 10%,rgba(62,224,208,.22),transparent 60%),radial-gradient(700px 480px at 10% 100%,rgba(124,77,255,.18),transparent 60%),linear-gradient(150deg,#040a14,#0b2547)}
.intro canvas{position:absolute;inset:0;transition:opacity .55s ease}
.intro.show canvas{opacity:0}
.intro-c{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:22px;pointer-events:none}
.intro-mark{width:min(620px,84vw);height:auto;filter:invert(1) drop-shadow(0 0 30px rgba(111,182,255,.45));opacity:0;transform:scale(.985);transition:opacity .55s ease,transform .9s cubic-bezier(.2,.8,.2,1)}
.intro-sub{font:600 clamp(.78rem,1.8vw,1.1rem) Inter,sans-serif;letter-spacing:.22em;text-transform:uppercase;color:#9fd2ff;text-align:center;padding:0 16px;opacity:0;transform:translateY(10px);transition:opacity .6s ease .2s,transform .6s ease .2s}
.intro.show .intro-mark{opacity:1;transform:none}
.intro.show .intro-sub{opacity:1;transform:none}
.intro.out{opacity:0;transform:scale(1.06);transition:opacity .65s ease,transform .65s ease;pointer-events:none}

/* ---------- page transitions ---------- */
@media (prefers-reduced-motion:no-preference){
  @view-transition{navigation:auto}
  .nav{view-transition-name:site-nav}
  .ap-fab{view-transition-name:apply-fab}
  ::view-transition-old(root){animation:vt-out .22s ease both}
  ::view-transition-new(root){animation:vt-in .38s cubic-bezier(.2,.7,.2,1) both}
  @keyframes vt-out{to{opacity:0;transform:translateY(-8px)}}
  @keyframes vt-in{from{opacity:0;transform:translateY(12px)}}
  @supports (view-transition-name:none){body{animation:none}}   /* the transition replaces the old fade-in */
}

/* ---------- aurora: soft colour fields drifting slowly behind the page headers ---------- */
.hero::before,.page-hero::before{content:"";position:absolute;inset:-35% -15%;pointer-events:none;
  background:radial-gradient(38% 48% at 18% 32%,rgba(80,140,255,.30),transparent 70%),
             radial-gradient(34% 44% at 78% 18%,rgba(62,224,208,.20),transparent 70%),
             radial-gradient(44% 54% at 58% 85%,rgba(167,139,250,.24),transparent 70%);
  filter:blur(36px);animation:aurora 22s ease-in-out infinite alternate}
@keyframes aurora{
  0%{transform:translate3d(-5%,-3%,0) rotate(0deg) scale(1)}
  50%{transform:translate3d(4%,2%,0) rotate(7deg) scale(1.1)}
  100%{transform:translate3d(-2%,5%,0) rotate(-5deg) scale(1.04)}}

/* ---------- menu: one highlight that slides to the hovered item (desktop) ---------- */
.links .nav-ind{position:absolute;top:0;left:0;height:100%;border-radius:12px;background:rgba(255,255,255,.11);opacity:0;pointer-events:none;z-index:0;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),width .35s cubic-bezier(.2,.7,.2,1),opacity .2s}
.links.has-ind{position:relative}
.links.has-ind a{position:relative;z-index:1}
.links.has-ind a:hover,.links.has-ind a.active{background:transparent}
.links.has-ind a.active{color:#fff}

/* ---------- magnetic buttons (mouse only) ---------- */
.magnet{transition:translate .35s cubic-bezier(.2,.7,.2,1),transform .15s,background .15s,border-color .15s,color .15s,box-shadow .2s}

@media (prefers-reduced-motion:reduce){.hero::before,.page-hero::before{animation:none}}

/* ---------- publications: papers per year, stacked journal / conference (click a year to filter) ---------- */
.pstat.wide{grid-template-columns:auto 1fr auto}
.pstat-years{display:flex;flex-direction:column;gap:6px;padding-left:28px;border-left:1px solid var(--line)}
.pstat-cap{font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.yr-chart{display:flex;align-items:flex-end;gap:10px;height:96px}
.yr{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%;min-width:34px;color:var(--muted)}
.yr .n{font:700 .8rem "Space Grotesk",sans-serif;color:var(--ink)}
/* one smooth gradient per column: purple (journals) blends into blue / teal (conferences) around the split point --jp */
.yr .col{display:flex;flex-direction:column-reverse;width:24px;height:calc(var(--h) * 54px);min-height:6px;border-radius:8px;overflow:hidden;transform-origin:bottom;
  background:linear-gradient(0deg,var(--journal) 0%,var(--journal) calc(var(--jp) * 1% - 14%),var(--conf) calc(var(--jp) * 1% + 14%),var(--accent-2) 100%);
  transition:transform .7s cubic-bezier(.2,.7,.2,1),box-shadow .2s}
.yr .col i{display:block;flex:var(--k) 1 0;cursor:pointer;transition:background .2s,box-shadow .2s}
.yr .col i:hover{background:rgba(255,255,255,.32)}
.yr .col i.on{background:rgba(255,255,255,.22);box-shadow:inset 0 0 0 2px #fff}
.yr .y{padding:0;border:0;background:none;font:600 .72rem Inter,sans-serif;color:var(--muted);cursor:pointer}
.yr .y:hover{color:var(--accent)}
.yr:hover .col{box-shadow:0 0 0 3px var(--accent-soft)}
.yr.on .col{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 45%,transparent)}
.yr.on .y,.yr:has(i.on) .y{color:var(--accent)}
.pstat.reveal:not(.in) .yr .col{transform:scaleY(0)}
@media (max-width:900px){
  .pstat.wide{grid-template-columns:1fr}
  .pstat.wide .pstat-top{padding:0;border:0}
  .pstat-years{padding:14px 0 0;border-left:0;border-top:1px solid var(--line)}
  .yr-chart{justify-content:space-between}
}

/* ---------- news timeline grouped by year (month | line + dot | card); used on the home page ---------- */
.news.ntl{display:block;max-width:860px;margin:0 auto}
.tl-year{display:flex;align-items:center;gap:14px;margin:6px 0 18px 100px;font:700 1.5rem/1 "Space Grotesk",sans-serif;color:var(--ink)}
.tl-year::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.tl-year:not(:first-child){margin-top:18px}
.news.ntl .news-item{position:relative;display:grid;grid-template-columns:72px 1fr;gap:0 28px;padding:0 0 18px;background:none;border:0;border-radius:0}
.news.ntl .news-item:hover{transform:none}
.news.ntl .news-item::before{content:"";position:absolute;left:85px;top:0;bottom:0;width:2px;background:var(--line)}
.news.ntl .news-item::after{content:"";position:absolute;left:77px;top:20px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:3px solid var(--accent);transition:box-shadow .25s,background .25s}
.news.ntl .news-item:hover::after{background:var(--accent);box-shadow:0 0 0 6px var(--accent-soft)}
.news.ntl .news-item:first-child::after{background:var(--accent);box-shadow:0 0 0 6px var(--accent-soft)}
.news.ntl .date{background:none;padding:16px 12px 0 0;text-align:right;color:var(--muted)}
.news.ntl .date b{font:700 .95rem "Space Grotesk",sans-serif;letter-spacing:.04em;text-transform:uppercase;color:var(--accent)}
.news.ntl .date span{display:none}
.news.ntl .news-item>div:last-child{padding:16px 20px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);transition:transform .25s,border-color .25s}
.news.ntl .news-item:hover>div:last-child{transform:translateX(4px);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}
.news.ntl .news-item h3{font-size:1.02rem}
@media (max-width:620px){
  .tl-year{margin-left:66px;font-size:1.3rem}
  .news.ntl .news-item{grid-template-columns:44px 1fr;gap:0 22px}
  .news.ntl .news-item::before{left:54px}
  .news.ntl .news-item::after{left:46px}
  .news.ntl .date b{font-size:.8rem}
  .news.ntl .news-item>div:last-child{padding:14px 16px}
}

/* home panel: narrower columns, two-line summaries */
.news.ntl.compact{max-width:none;padding-top:4px}
.news.ntl.compact .tl-year{margin:0 0 12px 76px;font-size:1.15rem}
.news.ntl.compact .tl-year:not(:first-child){margin-top:8px}
.news.ntl.compact .news-item{grid-template-columns:50px 1fr;gap:0 26px;padding-bottom:12px;color:inherit}
.news.ntl.compact .news-item:hover{text-decoration:none}
.news.ntl.compact .news-item::before{left:62px}
.news.ntl.compact .news-item::after{left:54px;top:16px}
.news.ntl.compact .date{padding:12px 10px 0 0}
.news.ntl.compact .date b{font-size:.78rem}
.news.ntl.compact .news-item>div:last-child{padding:10px 14px;box-shadow:none;min-width:0}
.news.ntl.compact h3{font-size:.95rem;margin-bottom:2px;transition:color .2s}
.news.ntl.compact .news-item:hover h3{color:var(--accent)}
.news.ntl.compact p{font-size:.84rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news.ntl.compact .news-item:hover p{-webkit-line-clamp:unset}
/* home: month above year; only the hovered item lights up (the latest one when nothing is hovered) */
.news.ntl.compact .date{line-height:1.15}
.news.ntl.compact .date span{display:block;margin-top:2px;font-size:.68rem;font-weight:600;color:var(--muted)}
.news.ntl:hover .news-item:not(:hover)::after{background:var(--surface);box-shadow:none}

/* search matches highlighted in publication titles */
.pub .t mark{background:color-mix(in srgb,var(--accent) 16%,transparent);color:inherit;border-radius:4px;padding:0 2px;margin:0 -2px}

/* home "Recent papers": same cards and hover as the news timeline next to it */
.plist .prow{border:1px solid var(--line);border-radius:16px;padding:12px 16px;margin-bottom:10px;background:var(--surface);
  transition:transform .25s,border-color .25s}
.plist .prow:last-child{border-bottom:1px solid var(--line);margin-bottom:0}
.plist .prow:hover,.plist .prow:focus-visible{background:var(--surface);box-shadow:none;transform:translateX(4px);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}
.plist .prow::after{display:none}

/* publications card: Google Scholar link under the total */
.pstat.wide .pstat-top{display:grid;grid-template-columns:max-content 1fr;align-items:baseline;justify-content:start;column-gap:10px;row-gap:12px}
.pstat-link{grid-column:1/-1;justify-self:start;display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:.78rem;font-weight:600;color:var(--ink-2);transition:border-color .2s,color .2s}
.pstat-link svg{width:14px;height:14px;color:var(--accent)}
.pstat-link span{font-size:.75rem;color:var(--muted)}
.pstat-link:hover{text-decoration:none;color:var(--accent);border-color:var(--accent)}

/* search suggestions that depend on the query (related topics / spelling fix) */
.qrel{margin-top:-10px}
.qrel span{color:var(--accent)}
.qrel button{border-style:solid;border-color:color-mix(in srgb,var(--accent) 28%,transparent);background:var(--accent-soft);color:var(--accent)}
.qrel button:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* Apply hint: springs up from the button each time it appears */
.ap-hint:not([hidden]):not(.bye){transform-origin:calc(100% - 42px) 100%;animation:hint-in .55s cubic-bezier(.2,1.35,.4,1) both}
.ap-hint:not([hidden]):not(.bye) .ap-hint-text b,.ap-hint:not([hidden]):not(.bye) .ap-hint-text span{animation:hint-txt .5s ease both}
.ap-hint:not([hidden]):not(.bye) .ap-hint-text span{animation-delay:.12s}
@keyframes hint-in{0%{opacity:0;transform:translateY(14px) scale(.85)}60%{opacity:1}100%{opacity:1;transform:none}}
@keyframes hint-txt{from{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:none}}
/* …and shrinks back into the button when it goes (mouse leaves, or after a few seconds) */
.ap-hint.bye{transform-origin:calc(100% - 42px) 100%;transition:none;animation:hint-out .38s cubic-bezier(.5,0,.75,0) both}
.ap-hint.bye .ap-hint-text b,.ap-hint.bye .ap-hint-text span{animation:hint-txt-out .25s ease-in both}
@keyframes hint-out{0%{opacity:1;transform:none}100%{opacity:0;transform:translateY(12px) scale(.82);filter:blur(2px)}}
@keyframes hint-txt-out{to{opacity:0;transform:translateX(6px)}}
@media (prefers-reduced-motion:reduce){.ap-hint:not([hidden]):not(.bye),.ap-hint .ap-hint-text b,.ap-hint .ap-hint-text span,.ap-hint.bye{animation:none}}

/* journal / conference bar + legend: hover to see the count, click to filter */
.pstat-bar i,.pstat-legend>div{cursor:pointer}
.pstat-bar i{transition:transform .9s cubic-bezier(.2,.7,.2,1) .25s,opacity .25s,filter .2s,box-shadow .2s}
.pstat-bar i:hover{filter:brightness(1.15) saturate(1.15);box-shadow:0 0 0 3px var(--accent-soft)}
.pstat-bar i.on{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 35%,transparent)}
.pstat.has-type .pstat-bar i:not(.on){opacity:.3}
.pstat-legend>div{border-radius:8px;padding:3px 7px;margin:-3px -7px;transition:background .2s,color .2s,opacity .25s}
.pstat-legend>div:hover,.pstat-legend>div:focus-visible{background:var(--bg-2);color:var(--ink);outline:none}
.pstat-legend>div.on{background:var(--accent-soft);color:var(--ink)}
.pstat.has-type .pstat-legend>div:not(.on){opacity:.45}

/* contact: the email card fills the row now that it is alone */
.contact .wide{grid-column:1/-1}

/* home hero numbers are links to Publications */
.stats [data-href]{cursor:pointer;transition:background .25s}
.stats [data-href]:hover,.stats [data-href]:focus-visible{background:rgba(255,255,255,.06);outline:none}
.stats [data-href]:hover span{color:#fff}

/* news cards about a paper: whole card opens it, with a small "View paper →" cue */
.news-item.linked{cursor:pointer}
.news-link{display:inline-flex;align-items:center;gap:4px;margin-top:8px;font-size:.82rem;font-weight:600;color:var(--accent)}
.news-link span{transition:transform .2s}
.news-item.linked:hover .news-link span{transform:translateX(3px)}
.news-link:hover{text-decoration:none}

/* a paper opened from News is highlighted for a moment */
.pub.flash{animation:flash 2.4s ease}

/* ---------- search panel: open/close motion is in site.js (Web Animations); here only the resting states ---------- */
.sk.show .sk-back{opacity:1;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.sk-panel{transition:none}
.sk.show .sk-panel{transform:none;opacity:1;filter:none}
.sk-bar svg{transition:transform .5s cubic-bezier(.3,1.6,.5,1) .15s}
.sk.sk-cascade .sk-bar svg{animation:sk-icon .6s cubic-bezier(.3,1.6,.5,1) .12s both}
@keyframes sk-icon{from{transform:scale(.4) rotate(-40deg)}}
.sk.sk-cascade .sk-group,.sk.sk-cascade .sk-item{animation:sk-item .42s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.14s + var(--i,0) * 35ms)}
@keyframes sk-item{from{opacity:0;transform:translateY(10px)}}
.search-btn:active{transform:scale(.94)}

/* search results: cards like News / Recent papers — type pill and date on top, title and summary below;
   the hovered / keyboard-selected card slides a little and gets an accent border */
.sk-res{padding:10px 12px 12px}
.sk-group{padding:10px 4px 6px}
.sk-item{display:block;margin-bottom:8px;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
  transition:transform .25s cubic-bezier(.2,.7,.2,1),border-color .2s,box-shadow .25s}
.sk-item:last-child{margin-bottom:0}
.sk-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
/* kind label: icon + small caps text, no coloured pill */
.sk .sk-type,.sk .sk-type.News,.sk .sk-type.Research,.sk .sk-type.People,.sk .sk-type.Page{display:inline-flex;align-items:center;gap:6px;min-width:0;padding:0;border-radius:0;background:none;color:var(--muted);font:700 .64rem Inter,sans-serif;letter-spacing:.09em;text-transform:uppercase}
.sk .sk-type svg{width:14px;height:14px;color:var(--accent);flex:none}
.sk-item .sk-main b{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;transition:color .2s}
.sk-item.on{background:var(--surface);border-color:color-mix(in srgb,var(--accent) 35%,var(--line));box-shadow:none;transform:translateX(4px)}
.sk-item.on .sk-main b{color:var(--accent)}
.sk-item .sk-type{transition:transform .25s cubic-bezier(.3,1.6,.5,1)}
.sk-item.on .sk-type{transform:none;color:var(--ink-2)}
@media (prefers-reduced-motion:reduce){.sk-item,.sk-item.on{transition:none;transform:none}}

/* a card reached from search / a link is highlighted for a moment */
.rcard.flash,.dcard.flash,.dir.flash{animation:flash 2.2s ease}

/* ---------- search panel, modern touches: gradient edge, kind tabs with counts, Enter hint, friendly empty state ---------- */
.sk-panel::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad);z-index:2}
.sk-bar{padding:16px 18px}
.sk-bar input{font-size:1.08rem}
.sk-tabs{display:flex;gap:4px;padding:8px 12px;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.sk-tabs::-webkit-scrollbar{display:none}
.sk-tabs button{flex:none;display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border:0;border-radius:8px;background:none;color:var(--muted);font:600 .8rem Inter,sans-serif;cursor:pointer;transition:background .2s,color .2s}
.sk-tabs button span{font-size:.7rem;font-weight:700;padding:1px 6px;border-radius:999px;background:var(--bg-2);color:var(--muted)}
.sk-tabs button:hover{color:var(--ink);background:var(--bg-2)}
.sk-tabs button.on{color:var(--accent);background:var(--accent-soft)}
.sk-tabs button.on span{background:var(--accent);color:#fff}
.sk-meta{display:inline-flex;align-items:center;gap:8px}
.sk-enter{display:none;font:600 .7rem Inter,sans-serif;padding:1px 6px;border-radius:5px;border:1px solid color-mix(in srgb,var(--accent) 40%,var(--line));color:var(--accent);background:var(--accent-soft)}
.sk-item.on .sk-enter{display:inline-block}
.sk-count{margin-left:auto;font-weight:600}
.sk-empty{display:flex;flex-direction:column;align-items:center;gap:6px;padding:34px 16px}
.sk-empty svg{width:40px;height:40px;color:var(--accent);opacity:.7;margin-bottom:4px}
.sk-empty b{color:var(--ink);font-size:.95rem}
.sk-empty span{font-size:.84rem}
.sk-try{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:8px}
.sk-try button{font:600 .78rem Inter,sans-serif;padding:5px 11px;border-radius:999px;border:1px dashed var(--line);background:none;color:var(--ink-2);cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.sk-try button:hover{border-style:solid;border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}