:root{
  --bg:#05070d;
  --panel:#0e1220;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(255,255,255,.14);
  --text:#e9edf6;
  --muted:#98a3ba;
  --dim:#67728a;
  --cyan:#6ee7f9;
  --violet:#a78bfa;
  --amber:#fbbf24;
  --max:1140px;
}
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
#stars{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:.9}
body::before{
  content:'';position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(760px 540px at 10% -8%, rgba(110,231,249,.10), transparent 62%),
    radial-gradient(680px 520px at 92% 4%, rgba(167,139,250,.10), transparent 62%),
    radial-gradient(900px 600px at 50% 108%, rgba(110,231,249,.05), transparent 65%);
}
/* film grain for depth */
body::after{
  content:'';position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.16;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
.wrap{position:relative;z-index:2;max-width:var(--max);margin:0 auto;padding:0 28px}
a{color:inherit;text-decoration:none}
.mono{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---------- nav ---------- */
/* the <header> wrapper carries the stickiness; a sticky child would be
   clipped to the wrapper's own height and stop following the scroll */
.site-nav{position:sticky;top:0;z-index:60}
nav{
  position:relative;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  background:rgba(5,7,13,.72);border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
nav.scrolled{border-bottom-color:var(--line);background:rgba(5,7,13,.88)}
#progress{position:absolute;left:0;top:0;height:2px;width:0;z-index:2;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:width .1s linear}
.nav-in{max-width:var(--max);margin:0 auto;padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-weight:800;letter-spacing:-.025em;font-size:16.5px;white-space:nowrap}
.brand span{background:linear-gradient(100deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--muted);transition:color .2s;position:relative}
.nav-links a:not(.nav-cta)::after{
  content:'';position:absolute;left:0;right:0;bottom:-6px;height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.22,1,.36,1);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-cta{font-size:14px;font-weight:600;padding:8px 16px;border-radius:9px;border:1px solid var(--line-2);color:var(--text)!important;transition:all .2s}
.nav-cta:hover{border-color:var(--cyan);color:var(--cyan)!important;background:rgba(110,231,249,.07)}
.nav-toggle{
  display:none;width:40px;height:36px;border-radius:9px;border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);cursor:pointer;place-items:center;color:var(--text);
}
.nav-toggle span{display:block;width:17px;height:1.5px;background:currentColor;border-radius:2px;transition:transform .3s,opacity .2s}
.nav-toggle span + span{margin-top:4.5px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media(max-width:900px){
  .nav-toggle{display:grid}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(7,10,17,.97);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .35s cubic-bezier(.22,1,.36,1);
  }
  /* headroom for six links plus the CTA; content is ~339px */
  .nav-links.open{max-height:440px}
  .nav-links a{padding:15px 28px;border-top:1px solid var(--line);font-size:15.5px}
  .nav-links a::after{display:none}
  .nav-cta{margin:14px 28px 20px;text-align:center;border-radius:10px}
  .nav-links a.nav-cta{padding:12px 16px;border-top:1px solid var(--line-2)}
}

/* ---------- hero ---------- */
.hero-head{padding:96px 0 88px;position:relative;overflow:hidden;min-height:86vh;display:flex;align-items:center}
/* .wrap is a flex item here — without this it shrinks to content and the hero
   stops aligning with the nav and every section below it */
.hero-head > .wrap{width:100%}
#globe{
  position:absolute;top:50%;right:-70px;transform:translateY(-52%);
  width:620px;height:620px;z-index:0;pointer-events:none;
}
@media(max-width:1080px){#globe{right:-190px;opacity:.5}}
@media(max-width:760px){#globe{width:480px;height:480px;right:-170px;top:38%;opacity:.3}}
.hero-in{max-width:780px}
h1{font-size:clamp(2.9rem,7.6vw,5.3rem);line-height:1.02;letter-spacing:-.05em;font-weight:900;margin-bottom:26px}
.grad{background:linear-gradient(100deg,var(--cyan) 0%,#7dd3fc 42%,var(--violet) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(1.06rem,2vw,1.26rem);color:var(--muted);max-width:660px;line-height:1.62}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:10px;
  font-weight:600;font-size:15px;position:relative;overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s,color .18s;
}
.btn-primary{background:linear-gradient(100deg,var(--cyan),#8ab4fb);color:#04202b;box-shadow:0 10px 30px -12px rgba(110,231,249,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(110,231,249,.9)}
.btn-ghost{border:1px solid var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* ---------- stat strip ---------- */
/* three short stats fit comfortably down to ~560px; only stack below that */
@media(max-width:560px){.stats{grid-template-columns:1fr;max-width:none}}

/* ---------- marquee ---------- */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:16px 0;overflow:hidden;position:relative;z-index:2;
  background:linear-gradient(180deg,rgba(14,18,32,.5),transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee-track{display:flex;gap:0;width:max-content;animation:slide 42s linear infinite}
.marquee-track span{
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);
  padding:0 26px;white-space:nowrap;
}
.marquee-track span::after{content:'◆';color:var(--cyan);opacity:.42;margin-left:26px;font-size:8px;vertical-align:middle}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
section{padding:96px 0;position:relative}
.sec-label{font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);margin-bottom:16px;display:flex;align-items:center;gap:12px}
.sec-label::before{content:'';width:26px;height:1px;background:var(--cyan);opacity:.6}
/* same label, but the hero heading below it is far bigger than an h2 */
.hero-in .sec-label{margin-bottom:26px}
h2{font-size:clamp(1.95rem,4.2vw,2.85rem);letter-spacing:-.035em;line-height:1.13;font-weight:800;margin-bottom:20px}
.sec-intro{color:var(--muted);max-width:680px;font-size:1.05rem;margin-bottom:52px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}

/* spotlight-on-hover shared by cards */
.spot{position:relative;overflow:hidden}
.spot::before{
  content:'';position:absolute;inset:0;z-index:0;opacity:0;transition:opacity .35s;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%), rgba(110,231,249,.13), transparent 62%);
}
.spot:hover::before{opacity:1}
.spot > *{position:relative;z-index:1}

/* ---------- venture panel ---------- */
.venture{
  border:1px solid var(--line);border-radius:22px;overflow:hidden;position:relative;
  background:
    radial-gradient(800px 320px at 12% 0%, rgba(110,231,249,.11), transparent 68%),
    radial-gradient(700px 300px at 88% 100%, rgba(167,139,250,.10), transparent 68%),
    linear-gradient(180deg,var(--panel),rgba(8,11,19,.55));
}
.venture::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),var(--violet),transparent);opacity:.75}
.venture-top{padding:46px 42px 40px;border-bottom:1px solid var(--line)}
.venture-name{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.venture-name h3{font-size:clamp(1.7rem,3.6vw,2.3rem);font-weight:900;letter-spacing:-.04em}
.venture-pill{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:999px;border:1px solid rgba(110,231,249,.3);background:rgba(110,231,249,.07);color:var(--cyan)}
.venture-pill.year{border-color:var(--line-2);background:rgba(255,255,255,.03);color:var(--dim)}
.venture-tag{font-size:14px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:22px;font-weight:500}
.venture-top p{color:var(--muted);max-width:740px;font-size:1.04rem}
.venture-top p + p{margin-top:14px}
.venture-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;
  font-size:14.5px;font-weight:600;color:var(--cyan);
  border-bottom:1px solid rgba(110,231,249,.32);padding-bottom:3px;
  transition:border-color .2s,gap .2s;
}
.venture-link:hover{border-bottom-color:var(--cyan);gap:12px}
.venture-sol{padding:30px 42px;border-bottom:1px solid var(--line)}
.vs-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:15px}
@media(max-width:820px){.venture-sol{padding:26px}}
.venture-roles{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
@media(max-width:820px){.venture-roles{grid-template-columns:1fr}.venture-top{padding:34px 26px 30px}}
.vrole{background:linear-gradient(180deg,rgba(14,18,32,.78),rgba(8,11,19,.55));padding:30px 26px;transition:background .3s}
.vrole:hover{background:linear-gradient(180deg,rgba(19,25,42,.9),rgba(10,14,24,.6))}
.vrole .t{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:10px;font-weight:600}
.vrole p{color:var(--muted);font-size:14.9px;line-height:1.6}

/* ---------- portrait ---------- */
.about-lead{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start;margin-bottom:56px}
.about-lead.no-portrait{grid-template-columns:1fr}
.about-lead.no-portrait .portrait{display:none}
@media(max-width:860px){.about-lead{grid-template-columns:1fr;gap:30px}.portrait{max-width:260px}}
.portrait{position:relative}
.portrait::before{
  content:'';position:absolute;inset:-20px;border-radius:28px;pointer-events:none;
  background:radial-gradient(closest-side, rgba(110,231,249,.20), rgba(167,139,250,.10) 55%, transparent 78%);
}
.portrait img{
  position:relative;z-index:1;width:100%;height:auto;display:block;
  border-radius:16px;border:1px solid var(--line-2);
  box-shadow:0 28px 64px -30px rgba(0,0,0,.95);
}
.about-copy p{color:var(--muted);font-size:1.06rem;line-height:1.66;max-width:620px}
.about-copy p + p{margin-top:16px}
.loc{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  font-size:13.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);
}

/* ---------- pillars ---------- */
.pillars{display:grid;gap:20px;grid-template-columns:repeat(3,1fr)}
@media(max-width:900px){.pillars{grid-template-columns:1fr}}
.pillar{
  border:1px solid var(--line);border-radius:16px;padding:32px 28px 30px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.5));
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.pillar::after{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));opacity:0;transition:opacity .3s;z-index:2}
.pillar:hover{border-color:var(--line-2);transform:translateY(-5px);box-shadow:0 22px 50px -26px rgba(0,0,0,.9)}
.pillar:hover::after{opacity:1}
.pillar .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;border:1px solid var(--line-2);background:rgba(255,255,255,.03)}
.pillar h3{font-size:1.24rem;font-weight:700;letter-spacing:-.022em;margin-bottom:10px}
.pillar p{color:var(--muted);font-size:15.2px;line-height:1.62}
.pillar .kicker{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:8px}

/* ---------- featured published work ---------- */
.orcid-link{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:44px;
  font-size:14px;color:var(--muted);padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:border-color .2s,color .2s;
}
.orcid-link:hover{border-color:var(--line-2);color:var(--text)}
.orcid-link .mono{font-size:13px;letter-spacing:.02em}
.work-feature{
  border:1px solid var(--line);border-radius:18px;padding:38px 34px;margin-bottom:22px;position:relative;
  background:
    radial-gradient(720px 280px at 8% 0%, rgba(167,139,250,.12), transparent 66%),
    linear-gradient(180deg,var(--panel),rgba(8,11,19,.5));
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.work-feature::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--violet),var(--cyan),transparent);opacity:.7}
.work-feature:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 24px 54px -28px rgba(0,0,0,.9)}
.wf-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:20px;flex-wrap:wrap}
.wf-type{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--violet);margin-bottom:9px}
.work-feature h3{font-size:clamp(1.55rem,3.1vw,2.1rem);font-weight:900;letter-spacing:-.042em;margin-bottom:5px;line-height:1.05}
.wf-sub{font-size:15px;color:var(--muted);max-width:640px;line-height:1.5}
.wf-date{font-size:12.5px;color:var(--dim);letter-spacing:.09em;text-transform:uppercase;white-space:nowrap;padding-top:6px}
.work-feature > p{color:var(--muted);font-size:15.6px;line-height:1.62;margin-bottom:20px;max-width:770px}
.wf-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.wf-link{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;
  padding:9px 15px;border-radius:9px;border:1px solid var(--line-2);color:var(--text);
  transition:border-color .2s,color .2s,background .2s,transform .2s;
}
.wf-link:hover{border-color:var(--violet);color:var(--violet);background:rgba(167,139,250,.08);transform:translateY(-2px)}
@media(max-width:640px){.work-feature{padding:30px 24px}.wf-date{padding-top:0}}

/* ---------- contribution strip ---------- */
.contrib{
  display:grid;grid-template-columns:auto 1fr auto;gap:26px;align-items:center;
  margin-top:20px;padding:26px 30px;border:1px solid var(--line);border-radius:16px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.4));
  transition:border-color .25s,transform .25s;
}
.contrib:hover{border-color:var(--line-2);transform:translateY(-3px)}
.contrib-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line-2);background:rgba(255,255,255,.03);flex-shrink:0}
.contrib h3{font-size:1.1rem;font-weight:700;letter-spacing:-.02em;margin-bottom:7px}
.contrib p{color:var(--muted);font-size:14.9px;line-height:1.6;margin-bottom:12px;max-width:620px}
.contrib-stat{text-align:right}
.contrib-stat .v{font-size:1.8rem;font-weight:800;letter-spacing:-.045em;line-height:1;white-space:nowrap}
.contrib-stat .l{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-top:6px}
@media(max-width:760px){
  .contrib{grid-template-columns:1fr;gap:16px}
  .contrib-stat{text-align:left}
}

/* ---------- research cards ---------- */
.grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
@media(max-width:760px){.grid{grid-template-columns:1fr}}
.card{
  border:1px solid var(--line);border-radius:16px;padding:32px 28px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.4));
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.card:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 22px 50px -26px rgba(0,0,0,.9)}
.card .num{font-size:12.5px;color:var(--cyan);letter-spacing:.1em;margin-bottom:16px;display:block}
.card h3{font-size:1.2rem;font-weight:700;letter-spacing:-.02em;margin-bottom:11px}
.card p{color:var(--muted);font-size:15.2px;line-height:1.62;margin-bottom:16px}

/* ---------- timeline ---------- */
.tl{position:relative;padding-left:26px}
.tl::before{
  content:'';position:absolute;left:5px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(110,231,249,.55),rgba(110,231,249,.22) 55%,rgba(255,255,255,.07));
}
.tl-item{position:relative;padding:0 0 42px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:'';position:absolute;left:-26px;top:9px;width:11px;height:11px;border-radius:50%;background:var(--bg);border:2px solid var(--cyan);transition:box-shadow .3s,transform .3s}
.tl-item:hover::before{box-shadow:0 0 0 5px rgba(110,231,249,.14);transform:scale(1.15)}
.tl-when{font-size:12.5px;letter-spacing:.09em;color:var(--dim);text-transform:uppercase;margin-bottom:7px}
.tl-item h3{font-size:1.22rem;font-weight:700;letter-spacing:-.02em;margin-bottom:3px}
.tl-org{font-size:14.5px;color:var(--cyan);margin-bottom:11px}
.tl-item p{color:var(--muted);font-size:15.4px;max-width:690px;margin-bottom:14px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12.5px;padding:4px 11px;border-radius:6px;border:1px solid var(--line);color:var(--dim);background:rgba(255,255,255,.02);transition:border-color .2s,color .2s}
.tl-item:hover .tag{border-color:var(--line-2);color:var(--muted)}

/* ---------- toolkit ---------- */
.kit{display:grid;gap:20px;grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.kit{grid-template-columns:1fr}}
.kit-col{border:1px solid var(--line);border-radius:16px;padding:28px 24px;background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.4));transition:border-color .25s}
.kit-col:hover{border-color:var(--line-2)}
.kit-col h3{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:16px;font-weight:600}
.kit-col.amber h3{color:var(--amber)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13.5px;padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:rgba(255,255,255,.025);color:var(--muted);transition:border-color .2s,color .2s,transform .2s,background .2s}
.chip:hover{border-color:rgba(110,231,249,.4);color:var(--text);background:rgba(110,231,249,.07);transform:translateY(-2px)}

/* ---------- education ---------- */
.edu{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.edu{grid-template-columns:1fr}}
.edu-box{border:1px solid var(--line);border-radius:16px;padding:32px 28px;background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.45));transition:border-color .25s}
.edu-box:hover{border-color:var(--line-2)}
.edu-box h3{font-size:1.22rem;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
.edu-box .sub{font-size:14.5px;color:var(--cyan);margin-bottom:20px}
.edu-badge{display:inline-block;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:999px;margin-bottom:12px;border:1px solid rgba(110,231,249,.3);background:rgba(110,231,249,.07);color:var(--cyan)}
.edu-badge.done{border-color:var(--line-2);background:rgba(255,255,255,.03);color:var(--dim)}
.kv{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid var(--line);font-size:15px}
.kv:first-of-type{border-top:none}
.kv .k{color:var(--dim)}
.kv .v{color:var(--text);text-align:right;font-weight:600}
.kv .v.hi{background:linear-gradient(100deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- certifications ---------- */
.cert-block{margin-top:34px}
.cert-head{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);font-weight:600;margin-bottom:18px}
.certs{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(max-width:760px){.certs{grid-template-columns:1fr}}
.cert{
  border:1px solid var(--line);border-radius:12px;padding:19px 21px;
  background:rgba(255,255,255,.02);transition:border-color .22s,transform .22s;
}
.cert:hover{border-color:var(--line-2);transform:translateY(-2px)}
.cert.wide{grid-column:1 / -1}
.cert-name{font-size:15.3px;font-weight:600;letter-spacing:-.012em;margin-bottom:5px;line-height:1.35}
.cert-issuer{font-size:13.5px;color:var(--cyan);margin-bottom:6px}
.cert-date{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.cert-sub{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:13.2px;color:var(--dim);line-height:1.75}
.cert-sub .lbl{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
.cert-sub b{color:var(--muted);font-weight:500}

/* ---------- contact ---------- */
.contact-box{
  border:1px solid var(--line);border-radius:22px;padding:64px 44px;text-align:center;position:relative;overflow:hidden;
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(110,231,249,.11), transparent 70%),
    radial-gradient(600px 300px at 50% 100%, rgba(167,139,250,.09), transparent 70%),
    linear-gradient(180deg,var(--panel),rgba(8,11,19,.55));
}
.contact-box::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),var(--violet),transparent);opacity:.75}
.contact-box h2{margin-bottom:14px}
.contact-box p{color:var(--muted);max-width:540px;margin:0 auto 34px}
.links{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.contact-box .alt-email{margin:24px auto 0;font-size:13.5px;color:var(--dim)}
.alt-email a{color:var(--muted);border-bottom:1px solid var(--line-2);padding-bottom:1px;transition:color .2s,border-color .2s}
.alt-email a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- press bio (third person, for reuse) ---------- */
.pressbio{
  margin-top:22px;border:1px solid var(--line);border-radius:18px;padding:30px 32px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.4));
}
.pressbio-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:15px;flex-wrap:wrap}
.pressbio-head h3{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);font-weight:600}
.pressbio p{color:var(--muted);font-size:15.2px;line-height:1.65;max-width:800px}
.copy-btn{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;
  padding:7px 13px;border-radius:8px;border:1px solid var(--line-2);
  background:rgba(255,255,255,.02);color:var(--muted);cursor:pointer;
  font-family:inherit;transition:border-color .2s,color .2s,background .2s;
}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(110,231,249,.06)}
.copy-btn.done{border-color:var(--cyan);color:var(--cyan)}
@media(max-width:640px){.pressbio{padding:26px 24px}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:34px 0;margin-top:40px;position:relative;z-index:2}
.foot-in{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;font-size:14px;color:var(--dim)}
.foot-in a{color:var(--muted);transition:color .2s}
.foot-in a:hover{color:var(--cyan)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .marquee-track{animation:none}
  .nav-links{transition:none}
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ============================================================
   Multipage additions
   ============================================================ */

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--cyan);color:#04202b;padding:12px 20px;
  border-radius:0 0 10px 0;font-weight:700;font-size:14px;
}
.skip-link:focus{left:0}

/* ---------- current page in nav ---------- */
.nav-links a[aria-current="page"]{color:var(--text)}
.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
@media(max-width:900px){
  .nav-links a[aria-current="page"]{color:var(--cyan);background:rgba(110,231,249,.05)}
}

/* ---------- subpage header ---------- */
.page-head{padding:104px 0 8px;position:relative}
.page-head h1{font-size:clamp(2.3rem,5.6vw,3.9rem);line-height:1.04;letter-spacing:-.045em;font-weight:900;margin-bottom:20px}
.page-lede{font-size:clamp(1.04rem,1.9vw,1.22rem);color:var(--muted);max-width:700px;line-height:1.62}
.page-lede strong{color:var(--text);font-weight:600}
.eyebrow{
  font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
  margin-bottom:16px;display:flex;align-items:center;gap:12px;
}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--cyan);opacity:.6}

/* ---------- homepage preview sections ---------- */
.more-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:14.5px;font-weight:600;color:var(--cyan);
  border-bottom:1px solid rgba(110,231,249,.32);padding-bottom:3px;
  transition:border-color .2s,gap .2s;
}
.more-link:hover{border-bottom-color:var(--cyan);gap:12px}

/* ---------- projects ---------- */
.proj{
  border:1px solid var(--line);border-radius:18px;padding:32px 30px;margin-bottom:20px;position:relative;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.45));
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.proj:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:0 22px 50px -28px rgba(0,0,0,.9)}
.proj-top{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;flex-wrap:wrap;margin-bottom:6px}
.proj h3{font-size:1.42rem;font-weight:800;letter-spacing:-.03em;line-height:1.15}
.proj-status{
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:999px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);color:var(--dim);white-space:nowrap;
}
.proj-status.live{border-color:rgba(110,231,249,.32);background:rgba(110,231,249,.07);color:var(--cyan)}
.proj-status.proto{border-color:rgba(167,139,250,.32);background:rgba(167,139,250,.07);color:var(--violet)}
.proj-role{font-size:14px;color:var(--cyan);margin-bottom:16px}
.proj dl{display:grid;grid-template-columns:118px 1fr;gap:10px 18px;margin:0 0 18px}
@media(max-width:640px){.proj dl{grid-template-columns:1fr;gap:3px 0}.proj dl dd{margin-bottom:10px}}
.proj dt{font-size:11.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--dim);padding-top:3px}
.proj dd{color:var(--muted);font-size:15.2px;line-height:1.6;margin:0}
.proj-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* ---------- press bios ---------- */
.bio-block{
  border:1px solid var(--line);border-radius:18px;padding:30px 32px;margin-bottom:20px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.4));
}
.bio-block p{color:var(--muted);font-size:15.4px;line-height:1.68;max-width:800px}
.bio-meta{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.press-headshot{display:grid;grid-template-columns:230px 1fr;gap:34px;align-items:start}
@media(max-width:700px){.press-headshot{grid-template-columns:1fr;gap:24px}.press-headshot .shot{max-width:230px}}
.press-headshot img{width:100%;height:auto;display:block;border-radius:14px;border:1px solid var(--line-2)}
.usage-list{list-style:none;margin-top:4px}
.usage-list li{padding:11px 0 11px 24px;border-top:1px solid var(--line);font-size:15px;color:var(--muted);position:relative;line-height:1.6}
.usage-list li:first-child{border-top:none}
.usage-list li::before{content:'▸';position:absolute;left:0;top:12px;color:var(--cyan);font-size:11px}
.usage-list b{color:var(--text);font-weight:600}
.usage-list .no{color:var(--dim)}
.usage-list .no::before{content:'×';color:var(--dim);font-size:13px;top:11px}

/* ---------- 404 ---------- */
.nf{min-height:74vh;display:flex;align-items:center;text-align:center}
.nf-code{font-size:clamp(4rem,14vw,8rem);font-weight:900;letter-spacing:-.06em;line-height:1}
.nf h1{font-size:clamp(1.6rem,4vw,2.4rem);margin:14px 0 16px}
.nf p{color:var(--muted);max-width:520px;margin:0 auto 30px}

/* ---------- footer nav ---------- */
.foot-nav{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:22px}
.foot-nav a{font-size:14px;color:var(--muted);transition:color .2s}
.foot-nav a:hover{color:var(--cyan)}
.foot-note{font-size:13.5px;color:var(--dim);margin-bottom:22px}
.foot-note a{color:var(--muted);border-bottom:1px solid var(--line-2);transition:color .2s,border-color .2s}
.foot-note a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- visually-hidden live region ---------- */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- disclaimer note ---------- */
.note{
  border:1px solid var(--line);border-left:2px solid var(--violet);border-radius:0 12px 12px 0;
  padding:18px 22px;background:rgba(167,139,250,.05);margin-top:22px;
}
.note p{color:var(--muted);font-size:14.6px;line-height:1.62;max-width:760px}
.note b{color:var(--text);font-weight:600}

/* ============================================================
   Writing / notes
   ============================================================ */

/* ---------- post list ---------- */
.post-list{list-style:none;margin-top:8px}
.post-item{border-top:1px solid var(--line)}
.post-item:last-child{border-bottom:1px solid var(--line)}
.post-item a{
  display:grid;grid-template-columns:132px 1fr;gap:28px;align-items:baseline;
  padding:26px 0;transition:background .22s;
}
.post-item a:hover{background:rgba(255,255,255,.015)}
@media(max-width:680px){.post-item a{grid-template-columns:1fr;gap:8px;padding:22px 0}}
.post-date{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);white-space:nowrap}
.post-item h2{font-size:1.32rem;font-weight:700;letter-spacing:-.025em;margin:0 0 8px;line-height:1.28;transition:color .22s}
.post-item a:hover h2{color:var(--cyan)}
.post-item p{color:var(--muted);font-size:15.1px;line-height:1.6;max-width:640px;margin:0}
.post-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.post-tags span{
  font-size:11.5px;letter-spacing:.05em;padding:3px 9px;border-radius:5px;
  border:1px solid var(--line);color:var(--dim);background:rgba(255,255,255,.02);
}

/* ---------- article prose ---------- */
.prose{max-width:720px}
.prose > * + *{margin-top:1.15em}
.prose p{color:var(--muted);font-size:17.2px;line-height:1.75}
.prose h2{
  font-size:clamp(1.4rem,2.9vw,1.85rem);font-weight:800;letter-spacing:-.028em;
  line-height:1.22;margin-top:2.2em;color:var(--text);
}
.prose h3{font-size:1.2rem;font-weight:700;letter-spacing:-.02em;margin-top:1.9em;color:var(--text)}
.prose strong{color:var(--text);font-weight:600}
.prose em{color:var(--text);font-style:italic}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(110,231,249,.32);transition:border-color .2s}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose ul,.prose ol{color:var(--muted);font-size:17.2px;line-height:1.72;padding-left:1.3em}
.prose li + li{margin-top:.5em}
.prose li::marker{color:var(--dim)}
.prose blockquote{
  border-left:2px solid var(--violet);padding:4px 0 4px 22px;margin-left:0;
  color:var(--text);font-size:17.6px;line-height:1.62;
}
.prose code{
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.88em;padding:2px 6px;border-radius:5px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:#c7f0fb;
}
.prose pre{
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.6));
  border:1px solid var(--line);border-radius:12px;padding:20px 22px;
  overflow-x:auto;font-size:14px;line-height:1.6;
}
.prose pre code{background:none;border:0;padding:0;font-size:14px;color:var(--muted)}
.prose hr{border:0;height:1px;background:var(--line-2);margin:2.6em 0}
.prose figure{margin:2em 0}
.prose figure img{width:100%;height:auto;border-radius:12px;border:1px solid var(--line)}
.prose figcaption{font-size:13.5px;color:var(--dim);margin-top:10px;text-align:center}

/* ---------- article header / footer ---------- */
.post-meta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;margin-bottom:26px;font-size:13.5px;color:var(--dim)}
.post-meta .sep{opacity:.4}
.post-foot{
  margin-top:56px;padding-top:30px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center;
}
.post-foot .more-link{margin-top:0}

/* ---------- prose tables (scroll inside their own container) ---------- */
.prose table{
  width:100%;border-collapse:collapse;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
@media(min-width:560px){.prose table{display:table;white-space:normal}}
.prose thead th{
  text-align:left;font-size:11.5px;letter-spacing:.11em;text-transform:uppercase;
  color:var(--dim);font-weight:600;padding:0 18px 10px 0;border-bottom:1px solid var(--line-2);
}
.prose tbody td{padding:11px 18px 11px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.prose tbody tr:last-child td{border-bottom:0}
.prose tbody td:first-child{color:var(--text);font-weight:500}
.prose thead th:last-child,.prose tbody td:last-child{padding-right:0}

/* ---------- writing categories ---------- */
.cat-jump{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px}
.cat-jump a{
  font-size:13.5px;padding:8px 15px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--muted);
  transition:border-color .2s,color .2s,background .2s;
}
.cat-jump a:hover{border-color:rgba(110,231,249,.4);color:var(--text);background:rgba(110,231,249,.06)}
.cat-block{padding:52px 0 0;scroll-margin-top:90px}
.cat-block:first-of-type{padding-top:34px}
.cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.cat-head h2{
  font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;letter-spacing:-.03em;margin:0;
}
.cat-count{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);white-space:nowrap}
.cat-blurb{color:var(--muted);font-size:15.2px;line-height:1.6;max-width:640px;margin-top:8px}
.cat-block .post-list{margin-top:18px}
/* posts sit under a category heading, so their titles are h3 here */
.post-item h3{font-size:1.28rem;font-weight:700;letter-spacing:-.025em;margin:0 0 8px;line-height:1.28;transition:color .22s}
.post-item a:hover h3{color:var(--cyan)}

/* long identifiers and file paths in inline code must wrap; block code still
   scrolls inside its own <pre> instead */
.prose :not(pre) > code{overflow-wrap:anywhere}

/* ---------- references / further reading ---------- */
.prose .refs{list-style:none;padding-left:0;counter-reset:ref;font-size:15.4px}
.prose .refs li{
  counter-increment:ref;position:relative;padding-left:34px;
  color:var(--muted);line-height:1.62;
}
.prose .refs li + li{margin-top:.7em}
.prose .refs li::before{
  content:"[" counter(ref) "]";position:absolute;left:0;top:0;
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:12.5px;
  color:var(--dim);
}
.prose .refs cite{font-style:italic;color:var(--text)}

/* ---------- category label on each post row ---------- */
.post-item .post-cat{
  font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:7px;font-weight:600;line-height:1.3;
}

/* ---------- interactive figures (buoyancy post) ---------- */
.prose .demo{
  margin:2.1em 0;border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(180deg,var(--panel),rgba(8,11,19,.6));
  overflow:hidden;
}
.demo-stage{position:relative;line-height:0}
.demo-stage canvas{
  display:block;width:100%;touch-action:none;cursor:grab;
  background:radial-gradient(120% 90% at 50% 0%,rgba(110,231,249,.05),transparent 70%);
}
.demo-stage canvas.grabbing{cursor:grabbing}
.demo-badge{
  position:absolute;top:10px;left:12px;
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11px;
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--amber);border:1px solid rgba(251,191,36,.4);
  background:rgba(251,191,36,.10);border-radius:5px;padding:3px 8px;
}
.demo-badge[hidden]{display:none}

.demo-controls{
  display:flex;flex-wrap:wrap;gap:14px 22px;align-items:flex-end;
  padding:14px 16px;border-top:1px solid var(--line);
}
.demo-ctl{flex:1 1 190px;min-width:0}
.demo-ctl label,.demo-ctl .demo-lab{
  display:flex;justify-content:space-between;gap:10px;align-items:baseline;
  font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--dim);margin-bottom:7px;
}
.demo-ctl .lc{text-transform:none;letter-spacing:.02em}
.demo-ctl output,.demo-ctl .demo-val{
  font-family:'JetBrains Mono',ui-monospace,monospace;
  font-size:12px;color:var(--cyan);text-transform:none;letter-spacing:0;
}
.demo-ctl input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:3px;
  background:rgba(255,255,255,.14);border-radius:3px;outline-offset:4px;
}
.demo-ctl input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:15px;height:15px;border-radius:50%;
  background:var(--cyan);border:none;cursor:pointer;
}
.demo-ctl input[type=range]::-moz-range-thumb{
  width:15px;height:15px;border-radius:50%;background:var(--cyan);border:none;cursor:pointer;
}

.demo-seg{display:flex;gap:6px;flex-wrap:wrap}
.demo-seg button,.demo-actions button{
  font:inherit;font-size:12.5px;line-height:1;cursor:pointer;
  padding:8px 12px;border-radius:7px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--muted);transition:color .18s,border-color .18s,background .18s;
}
.demo-seg button:hover,.demo-actions button:hover{color:var(--text);border-color:rgba(255,255,255,.28)}
.demo-seg button[aria-pressed=true]{
  color:var(--bg);background:var(--cyan);border-color:var(--cyan);font-weight:600;
}
.demo-actions{display:flex;gap:8px;flex-wrap:wrap;flex:0 0 auto}

.demo-ctl label.demo-check{
  display:flex;align-items:center;justify-content:flex-start;gap:9px;
  font-size:13px;letter-spacing:0;text-transform:none;
  color:var(--muted);cursor:pointer;margin-bottom:0;
}
.demo-check input{width:15px;height:15px;accent-color:var(--cyan);cursor:pointer;flex:0 0 auto}
.demo-check code{font-size:.82em}

.demo-readout{
  display:flex;flex-wrap:wrap;gap:4px 18px;
  padding:11px 16px;border-top:1px solid var(--line);
  font-family:'JetBrains Mono',ui-monospace,monospace;
  font-size:12px;color:var(--dim);background:rgba(0,0,0,.16);
}
.demo-readout b{color:var(--text);font-weight:500}
.demo-readout span{color:var(--dim)}

.prose figcaption{
  font-size:14px;line-height:1.6;color:var(--dim);text-align:left;
  padding:12px 16px;border-top:1px solid var(--line);
}
.prose figcaption b{color:var(--muted);font-weight:600}

.demo-fallback{font-size:15px;color:var(--dim);border-left:2px solid var(--line-2);padding-left:14px}

@media(max-width:560px){
  .demo-controls{gap:12px 16px;padding:12px 13px}
  .demo-ctl{flex:1 1 100%}
  .demo-actions{flex:1 1 100%}
  .demo-actions button{flex:1 1 auto}
  .demo-readout{padding:10px 13px;font-size:11.5px;gap:3px 14px}
  .prose figcaption{padding:11px 13px;font-size:13.5px}
}