:root{
  --bg:#f4f6f8;--bg-2:#e8ecf1;--surface:#ffffff;--ink:#0b1522;--ink-2:#34404f;--muted:#5d6878;
  --line:rgba(11,21,34,.14);--accent:#0a4bb5;--accent-2:#1d3a5c;--accent-soft:rgba(10,75,181,.1);--accent-inv:#5b9cff;
  --radius:2px;--max:1180px;--shadow:0 1px 2px rgba(0,0,0,.04),0 12px 32px -12px rgba(0,0,0,.12);
  --display:"Archivo","Arial Narrow",system-ui,sans-serif;--sans:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#080b10;--bg-2:#0e131a;--surface:#111821;--ink:#e9edf2;--ink-2:#b8c1cc;--muted:#8591a0;
  --line:rgba(233,237,242,.12);--accent:#5b9cff;--accent-2:#9db4cf;--accent-soft:rgba(91,156,255,.14);--accent-inv:#0a4bb5;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -12px rgba(0,0,0,.6);color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#080b10;--bg-2:#0e131a;--surface:#111821;--ink:#e9edf2;--ink-2:#b8c1cc;--muted:#8591a0;
  --line:rgba(233,237,242,.12);--accent:#5b9cff;--accent-2:#9db4cf;--accent-soft:rgba(91,156,255,.14);--accent-inv:#0a4bb5;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -12px rgba(0,0,0,.6);color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration-color:var(--accent);text-underline-offset:3px}
a:hover{color:var(--accent)}
h1,h2,h3{font-weight:400;line-height:1.08;margin:0;letter-spacing:-.01em}
h2{font-family:var(--display);font-weight:700;font-stretch:75%;text-transform:uppercase;letter-spacing:.005em;line-height:1;font-size:clamp(2.2rem,4.5vw,3.4rem)}
h3{font-family:var(--sans);font-weight:600;font-size:1.12rem;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--bg);padding:8px 14px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.eyebrow{font:500 .76rem/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:10px;margin-bottom:18px}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--accent)}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid transparent;transition:border-color .3s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{font:700 1rem/1 var(--display);font-stretch:80%;text-transform:uppercase;letter-spacing:.08em;text-decoration:none;display:flex;align-items:center;gap:10px;white-space:nowrap}
.brand .dot{width:10px;height:10px;background:var(--accent);transform:rotate(45deg)}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;font:600 .78rem/1 var(--sans);text-transform:uppercase;letter-spacing:.12em}
.nav ul a{text-decoration:none;color:var(--ink-2)}
.nav ul a:hover{color:var(--ink)}
.nav-tools{display:flex;align-items:center;gap:8px}
.chip-btn{font:500 .78rem/1 var(--mono);border:1px solid var(--line);background:transparent;color:var(--ink-2);padding:8px 11px;border-radius:var(--radius);cursor:pointer;text-decoration:none}
.chip-btn:hover{border-color:var(--ink);color:var(--ink)}
@media (max-width:860px){.nav ul{display:none}}

/* hero */
.hero{position:relative;min-height:calc(100svh - 64px);display:flex;align-items:center;padding:72px 0 56px;overflow:hidden}
#graph{position:absolute;inset:0;width:100%;height:100%;opacity:.9}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 22% 55%,var(--bg) 25%,transparent 75%);pointer-events:none}
.hero .wrap{position:relative;z-index:2;width:100%}
.status{display:inline-flex;align-items:center;gap:10px;font:500 .8rem/1 var(--mono);color:var(--ink-2);border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 70%,transparent);padding:9px 14px;border-radius:var(--radius);margin-bottom:28px;text-transform:uppercase;letter-spacing:.1em;font-size:.72rem}
.status i{width:7px;height:7px;background:#2fb344;box-shadow:0 0 0 0 rgba(47,179,68,.5);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(47,179,68,0)}100%{box-shadow:0 0 0 0 rgba(47,179,68,0)}}
.hero h1{font-family:var(--display);font-weight:800;font-stretch:75%;text-transform:uppercase;font-size:clamp(2.9rem,7.4vw,6.2rem);line-height:.92;max-width:14ch;letter-spacing:0}
h1 em,h2 em{font-style:normal;color:inherit}
.hero .lede{font-size:clamp(1.05rem,1.6vw,1.26rem);color:var(--ink-2);max-width:40rem;margin:28px 0 36px}
.hero .lede strong{color:var(--ink);font-weight:600}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:10px;font:600 .8rem/1 var(--sans);text-transform:uppercase;letter-spacing:.12em;padding:17px 24px;border-radius:var(--radius);text-decoration:none;border:1px solid var(--ink);transition:transform .2s,background .2s,color .2s}
.btn.primary{background:var(--ink);color:var(--bg)}
.btn.primary:hover{background:var(--accent);border-color:var(--accent);color:var(--bg);transform:translateY(-1px)}
.btn.ghost:hover{background:var(--ink);color:var(--bg)}
.btn svg{width:16px;height:16px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:44px;font:500 .8rem/1.4 var(--mono);color:var(--muted)}
.hero-meta span::before{content:"";display:inline-block;width:6px;height:6px;background:var(--accent);margin-right:8px;vertical-align:1px}

/* sections */
section{padding:112px 0}
.sec-head{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:end;margin-bottom:56px}
.sec-head p{color:var(--ink-2);margin:0;max-width:36rem}
@media (max-width:860px){.sec-head{grid-template-columns:1fr;gap:18px}section{padding:80px 0}}

/* stats */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:0}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:34px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font:700 clamp(2.4rem,4.4vw,3.6rem)/1 var(--display);font-stretch:75%;margin-bottom:10px}
.stat span{font-size:.88rem;color:var(--muted);line-height:1.45;display:block}
@media (max-width:860px){.stats .wrap{grid-template-columns:1fr 1fr}.stat{padding:26px 16px}.stat:nth-child(3){border-left:0;padding-left:0}.stat:nth-child(n+3){border-top:1px solid var(--line)}}

/* lenses */
.lenses{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.lens{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:32px;position:relative;overflow:hidden;transition:transform .3s,box-shadow .3s}
.lens:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.lens .num{font:500 .75rem/1 var(--mono);color:var(--accent);margin-bottom:40px;display:block}
.lens h3{font:700 1.7rem/1.05 var(--display);font-stretch:80%;text-transform:uppercase;margin-bottom:14px}
.lens p{color:var(--ink-2);font-size:.97rem}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:18px;padding:0;list-style:none}
.tags li{font:500 .7rem/1 var(--mono);padding:7px 10px;border-radius:var(--radius);background:var(--bg-2);color:var(--ink-2)}
@media (max-width:960px){.lenses{grid-template-columns:1fr}}

/* work */
.work{background:var(--bg-2)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{font:500 .8rem/1 var(--mono);border:1px solid var(--line);background:var(--surface);color:var(--ink-2);padding:10px 14px;border-radius:var(--radius);cursor:pointer;text-transform:uppercase;letter-spacing:.06em}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.cases{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.case{grid-column:span 2;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,opacity .3s}
.case.wide{grid-column:span 3}
.case:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case.hide{display:none}
.case .kind{display:flex;justify-content:space-between;gap:12px;font:500 .72rem/1.3 var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:22px}
.case .kind b{color:var(--accent-2);font-weight:500}
.case h3{font:700 1.55rem/1.08 var(--display);font-stretch:80%;margin-bottom:12px}
.case p{color:var(--ink-2);font-size:.95rem}
.case .outcome{margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);font-size:.88rem;color:var(--ink)}
.case .outcome b{color:var(--accent)}
.case a.more{font:600 .85rem/1 var(--sans);text-decoration:none;margin-top:14px;display:inline-flex;gap:6px}
.case a.more:hover{color:var(--accent)}
.case .viz{height:120px;margin:-6px -6px 20px;border-radius:var(--radius);background:var(--bg-2);overflow:hidden}
.note{font-size:.82rem;color:var(--muted);margin-top:26px;display:flex;gap:10px;align-items:flex-start}
@media (max-width:960px){.case,.case.wide{grid-column:span 3}}
@media (max-width:640px){.cases{grid-template-columns:1fr}.case,.case.wide{grid-column:auto}}

/* timeline */
.timeline{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.timeline li{display:grid;grid-template-columns:180px 1fr 1.3fr;gap:32px;padding:30px 0;border-bottom:1px solid var(--line)}
.timeline time{font:500 .8rem/1.5 var(--mono);color:var(--muted)}
.timeline h3{margin-bottom:4px}
.timeline .org{color:var(--muted);font-size:.9rem}
.timeline .org b{color:var(--accent-2);font-weight:500}
.timeline p{color:var(--ink-2);font-size:.95rem;margin:0}
.timeline details summary{cursor:pointer;font:500 .78rem/1 var(--mono);color:var(--muted);list-style:none;margin-top:12px}
.timeline details summary::-webkit-details-marker{display:none}
.timeline details summary::before{content:"+ "}
.timeline details[open] summary::before{content:"– "}
@media (max-width:860px){.timeline li{grid-template-columns:1fr;gap:8px}}

/* skills */
.stack{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stack div{background:var(--surface);padding:28px}
.stack h3{font:500 .75rem/1 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:16px}
.stack ul{list-style:none;margin:0;padding:0;font-size:.95rem;color:var(--ink-2)}
.stack li{padding:5px 0}
.stack li b{color:var(--ink);font-weight:600}
@media (max-width:960px){.stack{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.stack{grid-template-columns:1fr}}

/* edu */
.edu{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.edu-item{padding:22px 0;border-bottom:1px solid var(--line)}
.edu-item:first-of-type{border-top:1px solid var(--line)}
.edu-item time{font:500 .78rem/1 var(--mono);color:var(--muted)}
.edu-item h3{margin:8px 0 4px}
.edu-item p{color:var(--ink-2);font-size:.93rem;margin:0}
.langs{display:grid;gap:12px;margin-top:8px}
.lang{display:grid;grid-template-columns:110px 1fr 80px;align-items:center;gap:14px;font-size:.92rem}
.lang .bar{height:4px;background:var(--bg-2);overflow:hidden}
.lang .bar i{display:block;height:100%;background:var(--accent)}
.lang small{font:500 .74rem/1 var(--mono);color:var(--muted);text-align:right}
.sub{font:500 .75rem/1 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:40px 0 14px}
@media (max-width:860px){.edu{grid-template-columns:1fr;gap:24px}}

/* contact */
.contact{background:var(--ink);color:var(--bg);border-radius:var(--radius);margin:0 24px 24px;padding:96px 0}
.contact .eyebrow{color:color-mix(in srgb,var(--bg) 60%,transparent)}
.contact h2{font-size:clamp(2.6rem,7vw,5.4rem);max-width:14ch}

.contact p{color:color-mix(in srgb,var(--bg) 75%,transparent);max-width:40rem;margin:24px 0 36px}
.contact .btn{border-color:var(--bg);color:var(--bg)}
.contact .btn.primary{background:var(--bg);color:var(--ink)}
.contact .btn.primary:hover{background:var(--accent-inv);border-color:var(--accent-inv);color:var(--ink)}
.contact .btn.ghost:hover{background:var(--bg);color:var(--ink)}
.contact .where{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px}
.contact .where span{font:500 .76rem/1 var(--mono);padding:8px 12px;border:1px solid color-mix(in srgb,var(--bg) 25%,transparent);border-radius:var(--radius);color:color-mix(in srgb,var(--bg) 80%,transparent)}
footer{padding:28px 0 44px;font-size:.84rem;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:var(--muted)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}.status i{animation:none}}
.no-js .reveal{opacity:1;transform:none}

/* article pages (case studies, cv) */
.article{padding:72px 0 96px}
.article .wrap{max-width:860px}
.article h1{font:800 clamp(2.6rem,6vw,4.4rem)/.96 var(--display);font-stretch:75%;text-transform:uppercase;margin-bottom:22px}
.article .lede{font-size:1.2rem;color:var(--ink-2);margin-bottom:36px}
.article h2{font-size:clamp(1.8rem,3.4vw,2.4rem);margin:56px 0 16px}
.article p,.article li{color:var(--ink-2)}
.article ul.list{padding-left:1.2em}
.article ul.list li{margin:6px 0}
.article ul.list li::marker{color:var(--accent)}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:8px 0 12px}
.facts div{background:var(--surface);padding:18px 20px}
.facts dt{font:500 .72rem/1 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:8px}
.facts dd{margin:0;font-weight:500}
@media (max-width:640px){.facts{grid-template-columns:1fr}}
.diagram{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:24px 0}
.diagram svg{width:100%;height:auto}
.diagram text{font:500 12px var(--mono);fill:var(--ink)}
.diagram .box{fill:var(--bg-2);stroke:var(--line)}
.diagram .hl{fill:var(--accent-soft);stroke:var(--accent)}
.diagram .arrow{stroke:var(--muted);fill:none;stroke-width:1.4;marker-end:url(#ah)}
.diagram small{display:block;font-size:.8rem;color:var(--muted);margin-top:10px}
.callout{border-left:3px solid var(--accent);background:var(--surface);padding:16px 20px;border-radius:0;margin:28px 0;font-size:.95rem}
.back{font:500 .8rem/1 var(--mono);text-decoration:none;color:var(--muted);display:inline-block;margin-bottom:36px}
.next{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:64px;padding-top:28px;border-top:1px solid var(--line)}
.contact .eyebrow::before{background:var(--accent-inv)}