:root{
  --accent:#b509ac; --accent2:#5b6cff;
  --bg:#fff; --card:#fff; --ink:#1c1c1c; --muted:#7a7a85; --rule:#e8e8ee;
  --soft:#f7f7fa; --shadow:0 1px 3px rgba(0,0,0,.07);
  --serif:"Iowan Old Style BT","Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
html[data-theme=dark]{
  --accent:#e54cff; --accent2:#8a9bff;
  --bg:#18181d; --card:#212129; --ink:#e9e9ef; --muted:#9a9aa6; --rule:#30303a;
  --soft:#22222a; --shadow:0 1px 3px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{margin:0;background:var(--bg);color:var(--ink);
  font:400 16px/1.62 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  transition:background .2s,color .2s}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:0 24px}

/* nav */
.nav{position:sticky;top:0;z-index:9;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--rule)}
.nav .wrap{display:flex;align-items:center;height:60px}
.brand{font-size:19px;font-weight:600;color:var(--ink)}
.brand:hover{text-decoration:none;color:var(--accent)}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);border:0}
.links{margin-left:auto;display:flex;align-items:center;gap:3px}
.links a{color:var(--ink);padding:7px 12px;border-radius:8px;font-size:15px}
.links a:hover{background:var(--soft);text-decoration:none}
.links a.active{color:var(--accent);font-weight:600}
.tg{margin-left:8px;background:var(--soft);border:1px solid var(--rule);color:var(--ink);
  width:34px;height:34px;border-radius:9px;cursor:pointer;font-size:15px}

/* hero */
.hero{display:grid;grid-template-columns:160px 1fr;gap:34px;align-items:center;padding:30px 0 8px}
.photo{width:160px;height:160px;border-radius:50%;object-fit:cover;box-shadow:0 8px 30px rgba(0,0,0,.18);
  border:3px solid var(--card)}
.hero h1{font-size:38px;font-weight:600;margin:0 0 4px;letter-spacing:.2px}
.hero .role{color:var(--accent);font-weight:600;font-size:17px;margin:0 0 14px}
.hero p{margin:0 0 12px}
.social{display:flex;gap:14px;margin-top:14px}
.social a{color:var(--muted)}.social a:hover{color:var(--accent)}
.social svg{width:22px;height:22px;fill:currentColor;display:block}

.h{font-size:22px;font-weight:600;margin:44px 0 14px;display:flex;align-items:baseline;gap:12px}
#blog{margin-top:28px}
.h .all{font-size:13px;font-weight:500;color:var(--muted)}
.sub{color:var(--muted);margin:-6px 0 16px;font-size:15px}

/* year heading */
.yh{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin:26px 0 2px}
.yh:first-of-type{margin-top:8px}

/* blog-as-news list */
.news{border-collapse:collapse;width:100%}
.news td{padding:11px 0;border-bottom:1px solid var(--rule);vertical-align:top}
.news td.d{color:var(--accent);font-weight:700;white-space:nowrap;width:120px;font-size:14px}
.news a{color:var(--ink);font-weight:600}
.news .ex{color:var(--muted);font-weight:400;font-size:14px;display:block;margin-top:2px}

/* projects */
.plist{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 20px}
.prow{display:flex;gap:14px;align-items:flex-start;padding:12px 10px;border-radius:10px;transition:background .12s}
a.prow{color:inherit}
a.prow:hover{background:var(--soft);text-decoration:none}
.pthumb{width:60px;height:60px;border-radius:9px;flex:none;object-fit:cover;background:var(--soft);
  border:1px solid var(--rule);overflow:hidden;position:relative}
.pthumb svg{position:absolute;inset:0;width:100%;height:100%}
.g1{background:linear-gradient(135deg,#b509ac,#5b6cff)}.g2{background:linear-gradient(135deg,#11998e,#38ef7d)}
.g3{background:linear-gradient(135deg,#f7971e,#ffd200)}.g4{background:linear-gradient(135deg,#2b5876,#4e4376)}
.g5{background:linear-gradient(135deg,#e1306c,#fd1d1d)}
.pmeta{min-width:0}
.pmeta h3{margin:0;font-size:15px;color:var(--ink);font-weight:600;line-height:1.5}
.pmeta h3 .tech{font-weight:400;color:var(--muted);font-size:12.5px}
.pmeta h3 .tag{display:inline-block;font-size:11px;font-weight:600;color:var(--accent);vertical-align:middle;
  background:color-mix(in srgb,var(--accent) 13%,transparent);border-radius:20px;padding:2px 9px;margin-left:7px}
/* playable thumbnail */
.pmedia{position:relative;width:60px;height:60px;flex:none;cursor:pointer}
.pmedia .pthumb{width:100%;height:100%}
.pplay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;border-radius:9px;
  background:rgba(0,0,0,.32);transition:background .12s}
.pmedia:hover .pplay{background:rgba(0,0,0,.48)}
.pplay::after{content:"";width:0;height:0;margin-left:2px;border-left:11px solid #fff;
  border-top:7px solid transparent;border-bottom:7px solid transparent;filter:drop-shadow(0 1px 2px rgba(0,0,0,.5))}
/* video carousel */
.vcar{margin-top:16px}
.vstrip{display:flex;gap:12px;overflow-x:auto;padding:2px 2px 8px;scroll-snap-type:x proximity;scrollbar-width:thin}
.vstrip::-webkit-scrollbar{height:6px}
.vstrip::-webkit-scrollbar-thumb{background:var(--rule);border-radius:6px}
.vtile{flex:0 0 auto;width:176px;height:99px;padding:0;border:1px solid var(--rule);border-radius:10px;
  background-size:cover;background-position:center;position:relative;cursor:pointer;overflow:hidden;scroll-snap-align:start;
  transition:transform .12s,box-shadow .12s}
.vtile:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.vtile .pplay{border-radius:0}
@media(max-width:600px){.vtile{width:150px;height:84px}}
@media(max-width:600px){.vtile{width:150px;height:150px}}
.pmeta p{margin:4px 0 0;font-size:13px;color:var(--muted);line-height:1.45}
.plinks{margin-top:5px;font-size:12.5px;color:var(--muted)}
.plinks a{color:var(--accent);font-weight:600}
.plinks .sep{margin:0 6px;opacity:.5}

/* courses & talks */
.ccar{margin:6px 0 4px}
.cstrip{display:flex;gap:14px;overflow-x:auto;padding:4px 2px 12px;scroll-snap-type:x proximity;scrollbar-width:thin}
.cstrip::-webkit-scrollbar{height:6px}
.cstrip::-webkit-scrollbar-thumb{background:var(--rule);border-radius:6px}
.ctile{flex:0 0 auto;width:210px;scroll-snap-align:start;background:var(--card);border:1px solid var(--rule);
  border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s}
.ctile:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,.16)}
.ctile .cthumb{display:block;position:relative;aspect-ratio:4/3;background:var(--soft);overflow:hidden}
.ctile .cthumb img{width:100%;height:100%;object-fit:cover;display:block}
.ctile .cthumb .clang{position:absolute;top:8px;right:8px;font-size:10px;font-weight:700;letter-spacing:.03em;
  color:#fff;background:rgba(0,0,0,.55);border-radius:5px;padding:2px 6px}
.ctile .cbody{padding:11px 13px 13px}
.ctile h3{margin:0;font-size:14px;font-weight:600;line-height:1.4;color:var(--ink)}
.ctile h3 a{color:inherit}.ctile h3 a:hover{color:var(--accent)}
.ctile .cmeta{margin:5px 0 0;font-size:12.5px;color:var(--muted)}
.ctile .clinks{margin:8px 0 0;font-size:12.5px;font-weight:600;color:var(--accent)}
.ctile .clinks .sep{margin:0 6px;opacity:.45;font-weight:400;color:var(--muted)}

/* career */
.tl{list-style:none;margin:0;padding-left:24px;border-left:2px solid var(--rule)}
.tl > li{position:relative;padding:0 0 20px}
.tl > li::before{content:"";position:absolute;left:-31px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px var(--bg)}
.tl .yr{font-weight:700;color:var(--accent);font-size:14px}
.tl .co{font-weight:600;color:var(--ink);margin-left:6px}
.tl .co small{font-weight:400;color:var(--muted)}
.tl p{margin:3px 0 0;color:var(--muted);font-size:15px}
.tl ul{margin:5px 0 0;padding-left:18px;color:var(--muted);font-size:15px}
.tl ul li{margin:3px 0}
.tl ul b{color:var(--ink);font-weight:600}

/* publications */
.pub{display:grid;grid-template-columns:62px 1fr;gap:16px;padding:13px 0;border-bottom:1px solid var(--rule)}
.pub .yr{color:var(--accent);font-weight:700}
.patents{list-style:none;margin:0;padding:0;font-size:14px}
.patents li{display:flex;gap:12px;padding:2px 0;line-height:1.45;color:var(--ink)}
.patents .n{color:var(--accent);font-weight:700;white-space:nowrap;flex:none;min-width:104px}
.patents .n.pend{color:var(--muted);font-weight:600}
.pub .t{font-weight:600}.pub .m{color:var(--muted);font-size:14px}
.pub .t a{color:inherit;text-decoration:none}
.pub .t a:hover{color:var(--accent);text-decoration:underline}
.badge{font-size:10px;border:1px solid var(--rule);border-radius:5px;padding:1px 6px;color:var(--muted);margin-left:6px}

article:not(.fpost) h1{font-family:var(--serif);font-weight:600;font-size:30px;line-height:1.4;
  text-align:center;text-wrap:balance;max-width:600px;margin:1.5rem auto .35rem}
article:not(.fpost) .date{display:block;text-align:center;color:var(--muted);
  font-family:var(--sans);font-size:14px;margin-bottom:1.9rem}
article:not(.fpost) h2{font-family:var(--serif);font-weight:600;font-size:1.45rem;line-height:1.4;
  text-align:left;margin:1.25em 0 .6em}
.back{display:inline-block;margin-top:30px}
.fpost{border-bottom:1px solid var(--rule);margin-bottom:24px}
.fpost:last-of-type{border-bottom:0;margin-bottom:0}
.fpost .pt{font-size:23px;font-weight:600;margin:24px 0 2px}
.fpost .pt a{color:var(--ink)}.fpost .pt a:hover{color:var(--accent);text-decoration:none}
.fpost h4{font-size:18px;font-weight:600;margin:18px 0 6px}
.fpost p{margin:0 0 14px;line-height:1.65}

/* long-form post body — serif */
main.wrap:has(article:not(.fpost)){max-width:693px}
article:not(.fpost){font-family:var(--serif);font-size:17px;line-height:1.6}
article:not(.fpost) p{font-size:17px;line-height:1.6;margin:0 0 1.45rem}
article:not(.fpost) .lede{font-size:17px;color:inherit}
article:not(.fpost) h2 .tag{font-family:var(--sans);font-size:11px;font-weight:600;color:var(--accent);
  vertical-align:middle;margin-left:8px;background:color-mix(in srgb,var(--accent) 13%,transparent);
  border-radius:20px;padding:1px 8px}
.speed{display:inline-block;font:600 11px/1 var(--sans);letter-spacing:.02em;color:var(--accent);
  background:color-mix(in srgb,var(--accent) 10%,transparent);
  border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);border-radius:20px;
  padding:3px 10px;vertical-align:middle;white-space:nowrap}
article:not(.fpost) ul{list-style:square;margin:1rem 0 1.2rem 1.5rem;padding:0;line-height:1.6}
article:not(.fpost) li{margin:0 0 .2rem}
article:not(.fpost) li>ul{list-style:circle;margin:.35rem 0 .55rem 1.2rem;color:var(--muted)}
article:not(.fpost) blockquote{margin:2px 0 15px;padding:2px 0 2px 15px;
  border-left:3px solid var(--accent);font-style:italic}
article:not(.fpost) blockquote p{margin:0 0 8px}article:not(.fpost) blockquote p:last-child{margin:0}
article:not(.fpost) hr{border:0;border-top:1px solid var(--rule);margin:1.9rem 0}
article code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em;background:var(--soft);
  border:1px solid var(--rule);border-radius:5px;padding:1px 5px}
.draft{background:color-mix(in srgb,var(--accent) 10%,transparent);border:1px solid var(--accent);
  color:var(--accent);border-radius:8px;padding:8px 12px;font-size:13px;font-weight:600;margin:20px 0 0}

.foot{border-top:1px solid var(--rule);margin-top:54px;padding:26px 0;color:var(--muted);font-size:14px}
.foot a{color:var(--muted)}

@media(max-width:600px){
  .hero{grid-template-columns:1fr;text-align:center}
  .photo{margin:0 auto}
  .social{justify-content:center}
  .plist{grid-template-columns:1fr}
}