@import url(style.css);
:root{--accent:#2f80ed;--accent-ink:#1d62c4;--paper:#f7f7f8;--panel:#fff;--ink:#222;--muted:#666;--line:#e6e6ea;--side:84px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--paper:#14161b;--panel:#1b1e25;--ink:#ececf0;--muted:#a0a4b0;--line:#2a2e38;--accent-ink:#7db3ff}}
body{font:17px/1.65 "Oxygen",system-ui,sans-serif;background:var(--paper);color:var(--ink);padding-left:var(--side)}
a{color:var(--accent-ink)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:20}
/* sidebar */
.side{position:fixed;inset:0 auto 0 0;width:var(--side);background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;z-index:10}
.av{margin-top:14px;width:56px;height:56px;border-radius:12px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem;text-decoration:none}
.nm{margin:8px 0 12px;text-align:center;color:var(--accent);text-decoration:none;font-size:1rem;line-height:1.15}
.side nav{width:100%;border-top:1px solid var(--line)}
.side nav a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:12px 4px;font-size:.72rem;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);border-left:3px solid transparent}
.side nav svg{width:18px;height:18px;color:var(--accent)}
.side nav a:hover{background:var(--paper)}
.side nav a[aria-current]{border-left-color:var(--accent);font-weight:700}
/* pages */
main{min-height:100vh;position:relative;max-width:none}
main>.page{display:none;padding:56px clamp(20px,5vw,72px) 96px;max-width:1180px;margin:0 auto;border:0;position:relative}
html:not(.js) main>.page{display:block;border-top:1px solid var(--line)}
main>.page.on{display:block;animation:in .45s ease both}
@keyframes in{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){main>.page.on{animation:none}}
main>.page>h2{font-size:2rem;font-weight:700;margin:0 0 28px;padding-bottom:12px;position:relative}
main>.page>h2::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:3px;background:var(--accent)}
main h3{font-size:1.3rem;margin:40px 0 16px}
/* home */
#home.on{display:flex;align-items:center;justify-content:center;text-align:center;min-height:100vh;max-width:none;padding-bottom:56px;overflow:hidden}
.bgshapes{position:absolute;inset:0;width:100%;height:100%;fill:rgba(0,0,0,.045);z-index:0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .bgshapes{fill:rgba(255,255,255,.04)}}
#home .hero{position:relative;z-index:1;display:block;padding:0;max-width:640px}
#home h1{font-size:clamp(2.6rem,7vw,4.4rem);font-weight:700;color:var(--accent);margin:0 0 8px;letter-spacing:0}
#home .role{font-size:1.35rem;margin:0 0 20px}
#home .who{color:var(--muted);margin:0 0 16px}
#home .thesis{margin:0 auto 28px;max-width:34ch;font-size:1.15rem}
.btn{display:inline-block;padding:11px 26px;border:2px solid var(--accent);background:var(--accent);color:#fff;text-decoration:none;font-weight:700;margin:4px 6px;border-radius:2px}
.btn.ghost{background:transparent;color:var(--accent-ink)}
.btn:hover{filter:brightness(.93)}
/* content */
.two{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:start}
.demo{border-radius:6px}
.links{margin:0 -6px}
.pager{position:fixed;right:16px;bottom:16px;display:flex;gap:6px;z-index:10}
.pager button{width:38px;height:38px;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-size:1.4rem;cursor:pointer}
.pager button:hover{background:var(--accent);color:#fff}
.foot{padding:0 clamp(20px,5vw,72px) 28px;color:var(--muted);font-size:.8rem;max-width:1180px;margin:0 auto}
.js .foot{display:none}
body[data-page=home] .foot{display:none}
/* cards */
.pubs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;list-style:none;margin:0;padding:0}
.pubs li{margin:0;padding:24px;border:1px solid var(--line);border-left:1px solid var(--line);border-radius:4px;background:var(--panel);display:flex;flex-direction:column}
.pubs li.live{border-top:3px solid var(--accent)}
.pubs .l{margin-top:auto;padding-top:6px}.pubs .l a{margin-right:2px}
.pubs .tag{align-self:flex-start;margin-bottom:12px}
.svcs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc{background:var(--panel);border-radius:4px;padding:20px}
.figs{margin-top:0}
@media(max-width:980px){.pubs,.svcs{grid-template-columns:1fr 1fr}.two{grid-template-columns:1fr}}
@media(max-width:640px){
 body{padding-left:0;padding-top:62px}
 .side{inset:0 0 auto 0;width:auto;height:62px;flex-direction:row;border-right:0;border-bottom:1px solid var(--line);overflow-x:auto}
 .av,.nm{display:none}
 .side nav{display:flex;border:0;width:auto;flex:1}
 .side nav a{flex:1;min-width:64px;border-bottom:0;border-left:0;border-top:3px solid transparent;padding:8px 2px}
 .side nav a[aria-current]{border-top-color:var(--accent)}
 .pubs,.svcs,.figs{grid-template-columns:1fr}
 #home.on{min-height:calc(100vh - 62px)}
}
.pubs li.live{border-left-color:var(--line)}.pubs .f{font-size:.95rem;max-width:none}

/* v3: cube page transition, same effect and timing as the reference */
body{padding-left:0}
main{position:fixed;top:0;right:0;bottom:0;left:var(--side);min-height:0;overflow:hidden;perspective:1200px;transform-style:preserve-3d}
main>.page,main>.page.on{display:none;position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;max-width:none;margin:0;padding:56px clamp(20px,5vw,72px) 96px;animation:none;backface-visibility:hidden;background:var(--paper)}
main>.page>*{max-width:1180px;margin-left:auto;margin-right:auto}
main>.page.pt-page-current{display:block}
#home,#home.on{align-items:center;justify-content:center}
#home.pt-page-current{display:flex}
main>.page.pt-page-ontop{z-index:5}
.pt-page-rotateCubeTopOut{transform-origin:50% 100%;animation:.6s ease-in 0s 1 normal both running rotateCubeTopOut!important}
.pt-page-rotateCubeTopIn{transform-origin:50% 0%;animation:.6s ease-in 0s 1 normal both running rotateCubeTopIn!important}
@keyframes rotateCubeTopOut{50%{animation-timing-function:ease-out;transform:translateY(-50%) translateZ(-200px) rotateX(45deg)}100%{opacity:.3;transform:translateY(-100%) rotateX(90deg)}}
@keyframes rotateCubeTopIn{0%{opacity:.3;transform:translateY(100%) rotateX(-90deg)}50%{animation-timing-function:ease-out;transform:translateY(50%) translateZ(-200px) rotateX(-45deg)}}
html:not(.js) main{position:static;overflow:visible}
html:not(.js) main>.page{display:block;position:relative}
p.note{color:var(--muted);font-size:.8rem;margin-top:28px}
@media(max-width:640px){main{left:0;top:62px}}
#home{text-align:center}main>#home>.hero{max-width:640px;margin:0 auto}main>#home>.bgshapes{max-width:none;margin:0}

.cform{align-items:start}
.cform label{display:block;margin:0 0 16px;font-weight:700;font-size:.9rem}
.cform input,.cform textarea{display:block;width:100%;margin-top:6px;padding:12px 14px;border:1px solid var(--line);border-radius:3px;background:var(--panel);color:var(--ink);font:inherit;font-weight:400}
.cform input:focus,.cform textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.cform button{border-radius:2px;cursor:pointer;font:inherit;font-weight:700;margin:4px 0 0}
.socs{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 24px}
.soc{width:52px;height:52px;border:2px solid var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent-ink);background:var(--panel);transition:background .2s,color .2s}
.soc svg{width:30px;height:30px}
.soc:hover,.soc:focus-visible{background:var(--accent);color:#fff}

/* v4: own look. dark rail, left-aligned hero, network backdrop, per-page transitions */
:root{--paper:#f2f6fc;--panel:#fff;--ink:#14213d;--muted:#5b6784;--line:#dfe6f2;--accent:#2f80ed;--accent2:#19b5d8;--rail:#0e1a33}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--paper:#0b1220;--panel:#121b2e;--ink:#e8eefb;--muted:#9fb0cf;--line:#223049}}
body{font-family:"Manrope",system-ui,sans-serif;font-size:16.5px}
.side{background:var(--rail);border-right:0;width:92px}
:root{--side:92px}
.av{border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.nm{color:#cfe0ff;font-weight:600;font-size:.85rem}
.side nav{border-top:1px solid rgba(255,255,255,.1)}
.side nav a{color:#b8c7e6;border-bottom:1px solid rgba(255,255,255,.07);font-size:.68rem;letter-spacing:.02em}
.side nav svg{color:#6fb0ff}
.side nav a:hover{background:rgba(255,255,255,.06)}
.side nav a[aria-current]{color:#fff;background:rgba(47,128,237,.22);border-left-color:var(--accent2)}
main>.page>h2{font-weight:800;font-size:2.1rem;padding:0 0 0 16px;margin-bottom:30px;border-left:5px solid var(--accent)}
main>.page>h2::after{display:none}
main h3{font-weight:800}
.btn{border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent2));border:0;padding:13px 28px}
.btn.ghost{background:transparent;border:2px solid var(--accent);color:var(--accent-ink)}
.pubs li,.svc{border-radius:16px;border:1px solid var(--line);box-shadow:0 10px 30px -18px rgba(20,33,61,.35)}
.pubs li.live{border-top:1px solid var(--line);border-left:4px solid var(--accent)}
.demo{border-radius:16px}
.pager button{border-radius:50%}
.cform input,.cform textarea{border-radius:10px}
/* hero */
#home,#home.pt-page-current{text-align:left;justify-content:flex-start}
#home .hero,main>#home>.hero{max-width:720px;margin:0 0 0 clamp(0px,6vw,90px)}
#home h1{font-weight:800;background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
#home .thesis{margin:0 0 28px;max-width:36ch}
.bgshapes{fill:none}
.bgshapes .ln line{stroke:rgba(47,128,237,.16);stroke-width:1.2}
.bgshapes .dt circle{fill:rgba(25,181,216,.28)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .bgshapes{fill:none}}
/* social */
.socs{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.soc{width:auto;height:auto;border:1px solid var(--line);border-radius:14px;justify-content:flex-start;gap:12px;padding:10px 14px;background:var(--panel);color:var(--ink);text-decoration:none}
.soc .sb{flex:none;width:40px;height:40px;border-radius:10px;background:var(--c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.95rem}
.soc .sn{font-weight:700}
.soc:hover,.soc:focus-visible{background:var(--panel);color:var(--ink);border-color:var(--c);transform:translateY(-2px)}
/* per-page transitions: the incoming page picks its own */
main>.page[class*="pt-in-"],main>.page[class*="pt-out-"]{animation-duration:.7s;animation-fill-mode:both;animation-timing-function:cubic-bezier(.22,.8,.3,1)}
.pt-in-home{animation-name:inHome!important}.pt-out-home{animation-name:outHome!important}
.pt-in-research{animation-name:inRight!important}.pt-out-research{animation-name:outLeft!important}
.pt-in-papers{transform-origin:0 50%;animation-name:inFlip!important}.pt-out-papers{transform-origin:100% 50%;animation-name:outFlip!important}
.pt-in-service{animation-name:inZoom!important}.pt-out-service{animation-name:outZoom!important}
.pt-in-data{animation-name:inRise!important}.pt-out-data{animation-name:outSink!important}
.pt-in-contact{transform-origin:50% 0;animation-name:inFold!important}.pt-out-contact{transform-origin:50% 100%;animation-name:outFold!important}
@keyframes inHome{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:none}}
@keyframes outHome{to{opacity:0;transform:scale(1.04)}}
@keyframes inRight{from{transform:translateX(100%)}to{transform:none}}
@keyframes outLeft{to{transform:translateX(-35%);opacity:.2}}
@keyframes inFlip{from{opacity:0;transform:rotateY(-80deg)}to{opacity:1;transform:none}}
@keyframes outFlip{to{opacity:0;transform:rotateY(80deg)}}
@keyframes inZoom{from{opacity:0;transform:scale(1.35)}to{opacity:1;transform:none}}
@keyframes outZoom{to{opacity:0;transform:scale(.7)}}
@keyframes inRise{from{transform:translateY(100%)}to{transform:none}}
@keyframes outSink{to{transform:translateY(25%);opacity:.2}}
@keyframes inFold{from{opacity:0;transform:rotateX(-85deg)}to{opacity:1;transform:none}}
@keyframes outFold{to{opacity:0;transform:rotateX(85deg)}}
@media(max-width:640px){.socs{grid-template-columns:1fr}:root{--side:0px}.side{width:auto}#home .hero,main>#home>.hero{margin:0}}
.cform button.btn{border-radius:999px;border:0}
.bgshapes .ln line{stroke:rgba(47,128,237,.10)}
.bgshapes .dt circle{fill:rgba(25,181,216,.18)}

.dsgrid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.ds{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:0 10px 30px -18px rgba(20,33,61,.35);border-top:4px solid var(--accent)}
.ds h3{margin:8px 0 10px;font-size:1.6rem}
.ds p{margin:0 0 16px}
.ds .tag{display:inline-block;font-size:.78rem;font-weight:700;padding:3px 12px;border-radius:99px;background:rgba(47,128,237,.12);color:var(--accent-ink)}
.ds .tag.pre{background:rgba(25,181,216,.16)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}
.stat{background:var(--paper);border-radius:12px;padding:14px 16px}
.stat b{display:block;font-size:1.5rem;font-weight:800;background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:.85rem;color:var(--muted)}
.mut{color:var(--muted);font-size:.9rem}
.acts{margin:6px -6px 0!important}
.dsnote{margin-top:22px;border:1px dashed var(--accent);border-radius:16px;padding:24px 28px;background:linear-gradient(135deg,rgba(47,128,237,.06),rgba(25,181,216,.06))}
.dsnote h3{margin:0 0 8px}.dsnote p{margin:0 0 8px;max-width:75ch}
@media(max-width:900px){.dsgrid{grid-template-columns:1fr}}

/* v5: fill the pages */
#home,#home.pt-page-current{gap:clamp(24px,4vw,64px);padding-right:clamp(20px,4vw,64px)}
#home.pt-page-current{display:flex;align-items:center}
main>#home>.hero{flex:0 1 520px;margin-left:clamp(0px,3vw,48px)}
.homeside{position:relative;z-index:1;flex:1 1 480px;max-width:620px;min-width:0}
.homeside .demo{box-shadow:0 30px 60px -28px rgba(14,26,51,.6);border:1px solid rgba(255,255,255,.08)}
.stats.big{grid-template-columns:repeat(2,1fr);gap:16px}
.stats.big .stat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:0 10px 30px -22px rgba(20,33,61,.35)}
.stats.big .stat b{font-size:1.9rem}
.stats.big.four{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){#home.pt-page-current{flex-direction:column;align-items:flex-start;justify-content:center}.homeside{width:100%;max-width:none}.stats.big.four{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.stats.big,.stats.big.four{grid-template-columns:1fr}}
.stats.big .stat b{font-size:1.6rem;white-space:nowrap}

.av{width:72px;height:72px;margin-top:16px;padding:0;background:none;border:3px solid var(--accent2);overflow:hidden;box-shadow:0 0 0 4px rgba(25,181,216,.18)}
.av img{width:100%;height:100%;object-fit:cover;display:block;border-radius:50%}

/* blog cards */
.bgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:10px}
.bpost{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:0 10px 30px -18px rgba(20,33,61,.35);transition:transform .25s,box-shadow .25s}
.bpost:hover,.bpost:focus-visible{transform:translateY(-4px);box-shadow:0 18px 38px -18px rgba(47,128,237,.5)}
.bimg{display:block;aspect-ratio:1200/627;background:var(--line);overflow:hidden}
.bimg img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
.bpost:hover .bimg img{transform:scale(1.04)}
.btxt{display:flex;flex-direction:column;gap:8px;padding:22px 24px 24px}
.btxt strong{font-size:1.2rem;line-height:1.3;font-weight:800}
.bmeta{font-size:.82rem;color:var(--muted)}
.bmeta .tag{display:inline-block;margin-right:8px;font-size:.75rem;font-weight:700;padding:2px 10px;border-radius:99px;background:rgba(25,181,216,.16);color:var(--accent-ink)}
.bdesc{color:var(--muted);font-size:.95rem}
.bmore{color:var(--accent-ink);font-weight:700;margin-top:4px}
.pt-in-blog{transform-origin:100% 50%;animation-name:inSwing!important}.pt-out-blog{transform-origin:0 50%;animation-name:outSwing!important}
@keyframes inSwing{from{opacity:0;transform:rotateY(70deg) translateX(30%)}to{opacity:1;transform:none}}
@keyframes outSwing{to{opacity:0;transform:rotateY(-70deg) translateX(-30%)}}
@media(max-width:900px){.bgrid{grid-template-columns:1fr}}

/* footer */
.sitefoot{margin-top:56px;padding:34px 0 8px;border-top:1px solid var(--line);color:var(--muted);font-size:.93rem}
main>.page>.sitefoot{max-width:1180px}
.sfgrid{display:grid;grid-template-columns:1.4fr .8fr 1.3fr;gap:36px}
.sfh{display:block;color:var(--ink);font-weight:800;margin-bottom:10px}
.sfc p{margin:0 0 14px}.sfc ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.sfc a{color:var(--muted);text-decoration:none}.sfc a:hover{color:var(--accent-ink)}
.sficons{display:flex;flex-wrap:wrap;gap:8px}
.sficons a{width:38px;height:38px;border-radius:10px;background:var(--c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem;transition:transform .2s}
.sficons a:hover{transform:translateY(-3px);color:#fff}
.sfbase{margin:26px 0 0;font-size:.82rem}
.sitefoot[hidden]{display:none}
@media(max-width:800px){.sfgrid{grid-template-columns:1fr}}

/* footer fix, Oct 28: sit at the bottom of every page, below the content, and stay clickable */
main>.page>.sitefoot{position:relative;z-index:3;text-align:left;width:100%}
#home.pt-page-current{flex-wrap:wrap;align-content:center;row-gap:0}
#home>.sitefoot{flex:0 0 100%;order:99;margin-top:56px}
@media(max-width:1000px){#home.pt-page-current{flex-wrap:nowrap;align-content:normal}#home>.sitefoot{flex:0 0 auto;align-self:stretch}}

/* blog action buttons: line up with the post cards and stay small */
main>.page>.acts{margin:22px auto 0!important;max-width:1180px;width:100%;display:flex;flex-wrap:wrap;gap:10px}
main>.page>.acts .btn{margin:0;padding:8px 18px;font-size:.88rem;border-width:1.5px}
main>.page>h2{margin-left:auto;margin-right:auto;max-width:1180px;width:100%}

/* keyword chips on blog cards */
.ctags{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.ctags span{font-size:.74rem;font-weight:600;padding:3px 10px;border-radius:999px;background:rgba(25,181,216,.14);color:#1d62c4}
.ctags span::before{content:"#";opacity:.6;margin-right:2px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .ctags span{color:#7db3ff}}

/* icons on blog buttons */
main>.page>.acts .btn{display:inline-flex;align-items:center}
.btn .bi{display:inline-grid;place-items:center;flex:0 0 auto;width:22px;height:22px;margin-right:9px;border-radius:50%;background:var(--c,#2a6df4);color:#fff;font-size:.68rem;font-weight:800;line-height:1}