/* Shared design system for every page. Light by default, dark via OS setting or the toggle. */
:root{
  --bg:#f6f5f1;--surface:#ffffff;--surface-2:#efede7;--ink:#0f1115;--ink-2:#2b2f36;--muted:#646a75;--line:#e2dfd7;
  --accent:#2f45e8;--accent-ink:#ffffff;--accent-soft:#2f45e814;--ok:#1f8a4c;
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif;--sans:Inter,system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --radius:18px;--shadow:0 1px 2px #0f11150a,0 12px 40px -12px #0f111526;--max:1180px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b0c0f;--surface:#131519;--surface-2:#1a1d22;--ink:#eeece6;--ink-2:#c9c7c1;--muted:#8d929c;--line:#24272d;
  --accent:#8b9bff;--accent-ink:#0b0c0f;--accent-soft:#8b9bff1f;--ok:#4cc581;--shadow:0 1px 2px #0006,0 20px 50px -20px #000a;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0b0c0f;--surface:#131519;--surface-2:#1a1d22;--ink:#eeece6;--ink-2:#c9c7c1;--muted:#8d929c;--line:#24272d;
  --accent:#8b9bff;--accent-ink:#0b0c0f;--accent-soft:#8b9bff1f;--ok:#4cc581;--shadow:0 1px 2px #0006,0 20px 50px -20px #000a;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--bg);padding:8px 12px;border-radius:8px;z-index:99}.skip:focus{left:16px}

/* Type */
.eyebrow{font:500 12px/1.3 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.eyebrow.accent{color:var(--accent)}
.display{font-family:var(--serif);font-weight:400;letter-spacing:-.02em;line-height:1.02}
.display em{font-style:italic;color:var(--accent)}
.lede{font-size:clamp(18px,1.6vw,20px);line-height:1.55;color:var(--ink-2);max-width:560px}
.muted{color:var(--muted)}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .wrap{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em}
.brand .mark{width:28px;height:28px;border-radius:8px;background:var(--ink);color:var(--bg);display:grid;place-items:center;font:italic 18px/1 var(--serif)}
.links{display:flex;gap:28px;font-size:14px;color:var(--muted)}
.links a{transition:color .15s}.links a:hover,.links a[aria-current="page"]{color:var(--ink)}
.nav-end{display:flex;align-items:center;gap:8px}
.icon-btn{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--muted);border:1px solid var(--line);transition:.15s}
.icon-btn:hover{color:var(--ink);background:var(--surface)}
.icon-btn svg{width:16px;height:16px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 20px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid var(--line);background:var(--surface);transition:transform .15s,background .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn.small{height:36px;padding:0 14px;font-size:13px}
.btn .arr{transition:transform .2s}.btn:hover .arr{transform:translate(2px,-2px)}
.link{color:var(--accent);font-weight:600;display:inline-flex;gap:6px;align-items:center}
.link:hover{text-decoration:underline;text-underline-offset:4px}

/* Sections */
section{padding:120px 0}
.section-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:56px}
.section-head h2{font-size:clamp(40px,5.2vw,68px);margin:14px 0 0}
.section-head p{color:var(--muted);max-width:420px;justify-self:end;margin:0}
hr.rule{border:0;border-top:1px solid var(--line);margin:0}

/* Hero */
.hero{padding:64px 0 88px;display:grid;grid-template-columns:1.2fr .8fr;gap:64px;align-items:center}
.hero h1{font-size:clamp(48px,6.2vw,88px);margin:22px 0 24px}
.status{display:inline-flex;align-items:center;gap:10px;padding:6px 12px 6px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:13px;color:var(--ink-2)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 20%,transparent);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--ok) 6%,transparent)}}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.portrait{position:relative}
.portrait img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:50% 20%;border-radius:24px;box-shadow:var(--shadow)}
.portrait figcaption{position:absolute;left:16px;right:16px;bottom:16px;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:color-mix(in srgb,var(--surface) 80%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);font-size:13px;border:1px solid color-mix(in srgb,var(--line) 70%,transparent)}
.portrait figcaption b{display:block;font-weight:600}
.portrait figcaption span{color:var(--muted)}

/* Logos / proof strip */
.proof{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:32px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat strong{display:block;font:400 clamp(40px,4.4vw,60px)/1 var(--serif);letter-spacing:-.02em}
.stat span{display:block;margin-top:8px;color:var(--muted);font-size:14px;line-height:1.4}

/* Work cards */
.work{display:grid;gap:24px}
.card{display:grid;grid-template-columns:.85fr 1.15fr;border:1px solid var(--line);border-radius:28px;background:var(--surface);overflow:hidden;transition:box-shadow .25s,transform .25s}
.card:hover{box-shadow:var(--shadow)}
.card-body{padding:48px;display:flex;flex-direction:column;gap:18px}
.card-body h3{font:400 clamp(34px,3.4vw,46px)/1.05 var(--serif);letter-spacing:-.02em;margin:0}
.card-body p{color:var(--muted);margin:0;max-width:420px}
.card-body .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.pill{font:500 12px/1 var(--mono);padding:7px 10px;border-radius:999px;border:1px solid var(--line);color:var(--ink-2);background:var(--bg)}
.card-body .foot{margin-top:auto;padding-top:20px;display:flex;flex-wrap:wrap;gap:10px}
.card-visual{position:relative;background:var(--surface-2);padding:40px;display:grid;place-items:center;min-height:440px;overflow:hidden}
.card-visual::before{content:'';position:absolute;inset:0;background:radial-gradient(60% 60% at 70% 20%,var(--accent-soft),transparent 70%)}

/* Mock product UI (drawn in CSS so it stays crisp in both themes) */
.ui{position:relative;width:100%;max-width:560px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;font-size:13px}
.ui-bar{display:flex;align-items:center;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line)}
.ui-bar i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.ui-bar span{margin-left:10px;font:12px var(--mono);color:var(--muted)}
.tabs{display:flex;gap:4px;padding:10px 12px 0;overflow-x:auto;scrollbar-width:none}
.tabs button{white-space:nowrap;padding:7px 11px;border-radius:8px;font-size:12px;font-weight:500;color:var(--muted)}
.tabs button:hover{color:var(--ink)}
.tabs button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.ui-main{padding:18px 18px 20px}
.ui-title{display:flex;justify-content:space-between;align-items:start;gap:12px}
.ui-title strong{font-size:18px;letter-spacing:-.01em}
.badge{font:600 11px/1 var(--mono);padding:6px 8px;border-radius:6px;background:var(--accent-soft);color:var(--accent)}
.chart{display:flex;align-items:end;gap:8px;height:130px;margin:18px 0 14px;padding-bottom:1px;border-bottom:1px solid var(--line)}
.chart i{flex:1;border-radius:6px 6px 2px 2px;background:linear-gradient(var(--accent),color-mix(in srgb,var(--accent) 45%,transparent));transition:height .5s cubic-bezier(.2,.8,.2,1)}
.signal{display:flex;gap:10px;align-items:start;padding:12px;border-radius:10px;background:var(--bg);color:var(--ink-2);line-height:1.45}
.signal b{color:var(--accent);font-weight:600;white-space:nowrap}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px}
.kpi{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--bg)}
.kpi span{font:11px var(--mono);letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.kpi b{display:block;font:400 44px/1.1 var(--serif);margin-top:8px}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:0 18px 18px;font:12px var(--mono);color:var(--muted)}
.flow span{padding:7px 10px;border-radius:8px;border:1px solid var(--line);color:var(--ink-2)}

/* Case study */
.case{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}
.case aside{position:sticky;top:110px;align-self:start}
.case aside h2{font-size:clamp(40px,4.6vw,60px);margin:14px 0 20px}
.case ol{list-style:none;margin:0;padding:0;counter-reset:c}
.case li{counter-increment:c;display:grid;grid-template-columns:56px 1fr;gap:8px;padding:28px 0;border-top:1px solid var(--line)}
.case li:last-child{border-bottom:1px solid var(--line)}
.case li::before{content:counter(c,decimal-leading-zero);font:500 13px var(--mono);color:var(--accent);padding-top:5px}
.case h3{margin:0 0 6px;font-size:20px;letter-spacing:-.01em}
.case li p{margin:0;color:var(--muted)}

/* Approach (interactive loop) */
.loop{display:grid;grid-template-columns:280px 1fr;border:1px solid var(--line);border-radius:28px;background:var(--surface);overflow:hidden}
.loop-steps{padding:14px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.loop-steps button{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:12px;text-align:left;font-weight:500;color:var(--muted);transition:.15s}
.loop-steps button small{font:12px var(--mono);color:inherit;opacity:.7;width:20px}
.loop-steps button:hover{color:var(--ink);background:var(--bg)}
.loop-steps button[aria-selected="true"]{color:var(--ink);background:var(--bg)}
.loop-steps button[aria-selected="true"] small{color:var(--accent);opacity:1}
.loop-stage{padding:48px}
.loop-stage h3{font:400 clamp(44px,5vw,64px)/1 var(--serif);margin:12px 0 18px;letter-spacing:-.02em}
.loop-stage>p{color:var(--ink-2);font-size:18px;max-width:560px;margin:0}
.loop-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 40px;margin-top:40px}
.loop-grid div{border-top:1px solid var(--line);padding-top:14px}
.loop-grid b{display:block;font:500 11px var(--mono);letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:6px}

/* Lab */
.lab{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lab article{border:1px solid var(--line);border-radius:20px;padding:28px;background:var(--surface);min-height:220px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.lab article:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.lab h3{margin:auto 0 6px;font-size:20px;letter-spacing:-.01em;padding-top:40px}
.lab p{margin:0;color:var(--muted);font-size:15px}
.state{align-self:start;font:600 11px/1 var(--mono);letter-spacing:.06em;padding:6px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.state.live{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,transparent);background:color-mix(in srgb,var(--ok) 8%,transparent)}

/* Experience rows */
.rows{border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:200px 1fr;gap:40px;padding:36px 0;border-bottom:1px solid var(--line)}
.row .when{font:500 13px var(--mono);color:var(--muted);padding-top:6px}
.row h3{margin:0;font-size:22px;letter-spacing:-.015em}
.row h3 span{color:var(--muted);font-weight:400}
.row p{color:var(--muted);margin:10px 0 16px;max-width:640px}
.tags{display:flex;flex-wrap:wrap;gap:8px}

/* Writing list */
.posts{border-top:1px solid var(--line)}
.post{display:grid;grid-template-columns:200px 1fr auto;gap:40px;align-items:baseline;padding:30px 0;border-bottom:1px solid var(--line)}
.post .when{font:500 12px var(--mono);letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.post .when b{display:block;color:var(--accent);font-weight:500}
.post h3{margin:0 0 6px;font:400 clamp(26px,2.6vw,34px)/1.15 var(--serif);letter-spacing:-.01em}
.post p{margin:0;color:var(--muted);max-width:620px}
.post .state{white-space:nowrap}

/* CTA */
.cta{text-align:center;padding:140px 0}
.cta h2{font-size:clamp(56px,10vw,140px);margin:20px auto 24px;max-width:1000px;line-height:.95}
.cta p{color:var(--muted);font-size:18px;margin:0 auto;max-width:520px}
.cta .actions{justify-content:center}

/* Footer */
footer{border-top:1px solid var(--line);padding:32px 0 40px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer nav{display:flex;gap:20px}footer a:hover{color:var(--ink)}

/* Sub-page hero */
.page-hero{padding:96px 0 64px;max-width:860px}
.page-hero h1{font-size:clamp(52px,8vw,108px);margin:18px 0 24px}

/* Forms */
.contact{display:grid;grid-template-columns:1.3fr .7fr;gap:20px;padding:0 0 120px}
.panel{border:1px solid var(--line);border-radius:24px;background:var(--surface);padding:36px}
.field{display:grid;gap:8px;margin-top:20px}
.field label{font-size:14px;font-weight:500}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:15px var(--sans);transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.field textarea{min-height:150px;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hint{font-size:13px;color:var(--muted);margin:16px 0 0}
.channel{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-top:1px solid var(--line);font-weight:500}
.channel:hover{color:var(--accent)}

/* Education */
.edu{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;padding-bottom:120px}
.edu aside{position:sticky;top:110px;align-self:start}
.edu aside img{border-radius:20px;aspect-ratio:1;object-fit:cover;box-shadow:var(--shadow)}

/* Reveal on scroll (only when JS is running and motion is OK) */
@media (prefers-reduced-motion:no-preference){
  .js .reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
  .js .reveal.in{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Responsive */
@media (max-width:960px){
  .hero,.card,.case,.loop,.edu,.contact{grid-template-columns:1fr}
  .hero{gap:48px;padding-top:56px}
  .portrait{max-width:440px}
  .card-visual{min-height:340px;padding:28px}
  .case,.edu{gap:40px}.case aside,.edu aside{position:static}
  .loop-steps{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);scrollbar-width:none}
  .loop-steps button{white-space:nowrap}
  .lab{grid-template-columns:1fr 1fr}
  .proof{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(4){border-left:0;padding-left:0}
  .stat:nth-child(n+4){border-top:1px solid var(--line)}
}
@media (max-width:720px){
  .wrap{padding:0 16px}
  .links{display:none}
  section{padding:80px 0}
  .section-head{grid-template-columns:1fr;gap:16px;margin-bottom:36px}.section-head p{justify-self:start}
  .card{border-radius:22px}.card-body{padding:28px}
  .card-visual{padding:16px;min-height:0}
  .loop-stage{padding:28px}.loop-grid{grid-template-columns:1fr;gap:20px}
  .lab{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr 1fr}
  .stat{padding:24px 16px}
  .stat:nth-child(n){border-left:1px solid var(--line);padding-left:16px;border-top:0}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .stat:last-child{grid-column:span 2}
  .row,.post{grid-template-columns:1fr;gap:10px}
  .post .state{justify-self:start}
  .two{grid-template-columns:1fr}
  .panel{padding:24px}
  .cta{padding:100px 0}
  .kpi b{font-size:34px}
}