@font-face{font-family:"Inter";src:url("fonts/Inter-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/Inter-SemiBold.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Inter Display";src:url("fonts/InterDisplay-Bold.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --bg:#FAF7F2;--ink:#1C1C1C;--acc:#E8590C;--acc-ink:#B8440A;--sup:#6B6B6B;
  --line:#E6E0D6;--card:#FFFFFF;--code-bg:#1C1C1C;--code-ink:#F3EEE6;
  --radius:16px;--max:1080px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#141414;--ink:#F1ECE4;--acc:#F2742A;--acc-ink:#F2742A;--sup:#A8A29A;
    --line:#2C2A27;--card:#1D1C1A;--code-bg:#0D0D0D;--code-ink:#F1ECE4;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:400 17px/1.65 "Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc-ink);text-underline-offset:3px}
a:focus-visible,summary:focus-visible{outline:3px solid var(--acc);outline-offset:3px;border-radius:6px}
img{max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--card);padding:8px 12px;z-index:10}

/* Header */
.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;letter-spacing:.2px}
.mono{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;
  background:var(--ink);color:var(--bg);font:700 14px/1 "Inter Display",sans-serif}
.nav{display:flex;gap:22px;align-items:center;font-size:15px}
.nav a{color:var(--ink);text-decoration:none}
.nav a:hover{color:var(--acc-ink)}
.lang{border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-weight:600}
@media (max-width:720px){.nav .hide-sm{display:none}}

/* Hero */
.hero{padding-top:88px;padding-bottom:72px}
.bar{display:block;width:70px;height:10px;background:var(--acc);margin-bottom:26px}
.eyebrow{font-size:14px;font-weight:600;letter-spacing:1.6px;text-transform:uppercase;color:var(--sup);margin:0 0 14px}
h1,h2,h3{font-family:"Inter Display","Inter",sans-serif;font-weight:700;line-height:1.1;margin:0}
h1{font-size:clamp(40px,7vw,72px);letter-spacing:-1px}
h1 .acc{color:var(--acc)}
.lead{font-size:clamp(18px,2.2vw,21px);color:var(--sup);max-width:640px;margin:22px 0 0}
.pills{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 0;padding:0;list-style:none}
.pills li{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 14px;font-size:15px;font-weight:600}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:12px;font-weight:600;text-decoration:none;font-size:16px}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:var(--acc);color:#fff}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{border-color:var(--acc);color:var(--acc-ink)}

/* Sections */
section{padding:72px 0;border-top:1px solid var(--line)}
h2{font-size:clamp(30px,4.5vw,44px);margin-bottom:12px}
.sub{color:var(--sup);margin:0 0 36px;max-width:640px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.card h3{font-size:22px;margin-bottom:10px}
.card p{margin:0;color:var(--sup)}
.card ul{margin:10px 0 0;padding-left:18px;color:var(--sup)}
.k{font-size:13px;font-weight:600;letter-spacing:1.4px;text-transform:uppercase;color:var(--acc-ink)}

.about{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}
@media (max-width:820px){.about{grid-template-columns:1fr}}
.about p{margin:0 0 16px}
.stats{display:grid;gap:14px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.stat b{display:block;font:700 34px/1.1 "Inter Display",sans-serif;color:var(--acc)}
.stat span{color:var(--sup);font-size:15px}

/* Lab notes */
.notes{display:grid;gap:16px}
details.note{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
details.note[open]{border-color:var(--acc)}
.note summary{list-style:none;cursor:pointer;padding:22px 26px;display:grid;grid-template-columns:1fr auto;gap:6px 16px;align-items:center}
.note summary::-webkit-details-marker{display:none}
.note summary h3{font-size:22px;grid-column:1}
.note summary .k{grid-column:1;grid-row:1}
.note summary .x{grid-column:2;grid-row:1/span 2;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--line);
  display:grid;place-items:center;font-weight:600;color:var(--acc-ink);transition:transform .2s}
details[open] .x{transform:rotate(45deg)}
.note .body{padding:0 26px 26px}
.note .body p,.note .body li{color:var(--ink)}
.note .body h4{margin:22px 0 6px;font-size:16px}
.callout{border-left:4px solid var(--acc);background:var(--bg);padding:14px 18px;border-radius:0 10px 10px 0;margin:18px 0}
.callout p{margin:0}
pre{background:var(--code-bg);color:var(--code-ink);border-radius:12px;padding:18px 20px;overflow-x:auto;
  font:500 14px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin:16px 0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
:not(pre)>code{background:var(--line);padding:1px 6px;border-radius:6px}
pre .c{color:#9A948B}pre .s{color:#F2A36B}pre .kw{color:#F2742A}
table{width:100%;border-collapse:collapse;font-size:15px;margin:14px 0}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600}
.tablewrap{overflow-x:auto}

/* Contact & footer */
.contact{text-align:left}
footer{border-top:1px solid var(--line);padding:32px 0 48px;color:var(--sup);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}