:root{
  --brand:#478ac9;        /* BioSofTech brand blue, kept from the live site */
  --brand-ink:#2a679f;    /* darker brand blue for text and buttons (AA on white) */
  --ai:#14806f;           /* BioAI family accent */
  --ai-ink:#0f6a5c;
  --ink:#15233a;          /* headings and body */
  --ink-soft:#4a586b;     /* secondary text */
  --paper:#f6f8fb;        /* page ground */
  --white:#ffffff;
  --line:#dbe3ec;
  --verify-tint:#e9f1fa;
  --ai-tint:#e6f3f0;
  --display:'Bricolage Grotesque', 'Segoe UI', sans-serif;
  --body:'Public Sans', 'Segoe UI', Arial, sans-serif;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--body);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:var(--brand-ink)}
a:focus-visible,button:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;margin:0;letter-spacing:-0.01em}
h1{font-size:clamp(40px,6vw,72px)}
h2{font-size:clamp(30px,4vw,44px)}
h3{font-size:22px;line-height:1.2}
p{margin:0}
.lede{font-size:clamp(18px,1.6vw,21px);color:var(--ink-soft);max-width:60ch}
.skip{position:absolute;left:-999px;top:8px;background:var(--white);padding:8px 12px;z-index:10}
.skip:focus{left:8px}

/* Header */
.site-head{position:sticky;top:0;z-index:5;background:rgba(246,248,251,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.wordmark{font-family:var(--display);font-weight:700;font-size:24px;color:var(--ink);text-decoration:none;letter-spacing:-0.02em}
.wordmark img{display:block;width:180px;height:auto}
.wordmark span{color:var(--brand)}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:15px}
.nav a:hover{color:var(--brand-ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;font:600 15px/1 var(--body);text-decoration:none;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--brand-ink);color:var(--white)}
.btn-primary:hover{background:#1f5482}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--white)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;min-height:44px;padding:0 14px;font:600 15px var(--body);color:var(--ink)}
@media (max-width:900px){
  .menu-btn{display:inline-flex;align-items:center}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:4px;padding:12px 24px 20px;background:var(--paper);border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding:10px 0}
}

/* Hero */
.hero{padding:72px 0 88px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}
.hero-copy{display:flex;flex-direction:column;gap:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.stack-figure{margin:0;background:var(--white);border:1px solid var(--line);border-radius:20px;padding:28px}
.stack-figure figcaption{font-size:14px;color:var(--ink-soft);margin-top:16px}
@media (max-width:960px){.hero .wrap{grid-template-columns:1fr}.hero{padding:48px 0 64px}}

/* Ecosystem diagram */
.layer{border-radius:12px;padding:16px 18px}
.layer + .layer{margin-top:10px}
.layer-ai{background:var(--ai-tint);border:1px solid #bfe0d9}
.layer-verify{background:var(--verify-tint);border:1px solid #c4d8ee}
.layer-data{background:#eef1f5;border:1px dashed #b9c4d1}
.layer-title{font-family:var(--display);font-weight:700;font-size:17px;display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.layer-title small{font-family:var(--body);font-weight:500;font-size:13px;color:var(--ink-soft)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;padding:0;list-style:none}
.chips li{font-size:13px;font-weight:600;background:var(--white);border-radius:6px;padding:6px 10px;border:1px solid var(--line)}
.layer-ai .chips li{color:var(--ai-ink)}
.layer-verify .chips li{color:var(--brand-ink)}
.flow{display:flex;justify-content:center;align-items:center;gap:10px;font-size:13px;color:var(--ink-soft);margin-top:10px}
.flow svg{color:var(--ink-soft)}

/* Sections */
section{scroll-margin-top:80px}
.band{padding:96px 0}
.band-white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-direction:column;gap:16px;max-width:760px;margin-bottom:48px}

/* Product families */
.family{display:grid;grid-template-columns:300px minmax(0,1fr);gap:48px;padding:48px 0;border-top:2px solid var(--ink)}
.family + .family{margin-top:24px}
.family-intro{display:flex;flex-direction:column;gap:14px}
.family-name{font-family:var(--display);font-weight:700;font-size:32px;line-height:1.05}
.family-verify .family-name{color:var(--brand-ink)}
.family-ai .family-name{color:var(--ai-ink)}
.family-intro p{color:var(--ink-soft)}
.products{display:flex;flex-direction:column}
.product{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:32px;padding:28px 0;border-bottom:1px solid var(--line)}
.product:first-child{padding-top:0}
.product-head{display:flex;flex-direction:column;gap:8px}
.product-kind{font-size:14px;font-weight:600;color:var(--ink-soft)}
.product p{color:var(--ink-soft)}
.product ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.product ul li::marker{color:var(--brand)}
.family-ai .product ul li::marker{color:var(--ai)}
.tag{align-self:flex-start;font-size:12px;font-weight:600;padding:4px 9px;border-radius:999px;background:var(--ai-tint);color:var(--ai-ink)}
@media (max-width:960px){.family{grid-template-columns:1fr;gap:28px}.product{grid-template-columns:1fr;gap:14px}}

/* Journey */
.journey{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;counter-reset:step}
.journey li{position:relative;padding:28px 24px 0 0;border-top:3px solid var(--line);counter-increment:step;display:flex;flex-direction:column;gap:8px}
.journey li::before{content:counter(step);position:absolute;top:-17px;left:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font:700 15px var(--display);color:var(--white);background:var(--brand-ink)}
.journey li.ai::before{background:var(--ai-ink)}
.journey li.ai{border-top-color:#bfe0d9}
.journey li.verify{border-top-color:#c4d8ee}
.journey h3{font-size:19px}
.journey p{font-size:15px;color:var(--ink-soft)}
.journey .who{font-size:13px;font-weight:600}
.journey li.verify .who{color:var(--brand-ink)}
.journey li.ai .who{color:var(--ai-ink)}
@media (max-width:960px){.journey{grid-template-columns:1fr;gap:36px}.journey li{padding:24px 0 0 0}}

/* Principles */
.principles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.principle{padding:28px 32px 28px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.principle:nth-child(odd){border-right:1px solid var(--line)}
.principle:nth-child(even){padding-left:32px}
.principle p{color:var(--ink-soft)}
@media (max-width:760px){.principles{grid-template-columns:1fr}.principle:nth-child(odd){border-right:none}.principle:nth-child(even){padding-left:0}}

/* Services */
.services{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.service{display:flex;flex-direction:column;gap:8px}
.service p{color:var(--ink-soft);font-size:16px}
@media (max-width:960px){.services{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.services{grid-template-columns:1fr}}

/* CTA */
.cta{background:var(--ink);color:var(--white);padding:88px 0}
.cta .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:48px;align-items:center}
.cta p{color:#c9d4e2;max-width:52ch;margin-top:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta .btn-primary{background:var(--brand);color:var(--ink)}
.cta .btn-primary:hover{background:#6aa3d8}
.cta .btn-ghost{border-color:#c9d4e2;color:var(--white)}
.cta .btn-ghost:hover{background:var(--white);color:var(--ink)}
@media (max-width:860px){.cta .wrap{grid-template-columns:1fr}.cta-actions{justify-content:flex-start}}

/* Footer */
footer{padding:56px 0 40px;font-size:15px;color:var(--ink-soft)}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:32px}
.foot-grid h3{font-family:var(--body);font-size:15px;font-weight:600;color:var(--ink);margin-bottom:10px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.foot-grid a{color:var(--ink-soft);text-decoration:none}
.foot-grid a:hover{color:var(--brand-ink);text-decoration:underline}
.foot-base{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:14px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* Shared layout tokens keep new product sections consistent. */
:root{--section-space:clamp(56px,7vw,96px);--radius:16px}
body{font-size:16px}
h1{font-size:clamp(2.35rem,4.3vw,3.75rem);line-height:1.08;letter-spacing:-.035em;text-wrap:balance}
h1 span{color:var(--brand-ink)}
h2{text-wrap:balance}
a,button{-webkit-tap-highlight-color:transparent}
section,[id]{scroll-margin-top:100px}
.wrap{max-width:1240px;padding-inline:clamp(20px,4vw,48px)}
.eyebrow{font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-ink)}
.wordmark{flex-shrink:0;display:inline-flex;align-items:center}
.wordmark img{width:150px;height:auto;object-fit:contain}
.site-head .wrap{max-width:none;padding-inline:clamp(20px,4vw,56px);min-height:80px}
.nav{gap:clamp(16px,2vw,28px)}
.nav a{display:inline-flex;align-items:center;min-height:44px}
.nav .btn-primary{color:var(--white)}
.nav .btn-primary:hover{color:var(--white)}
.btn{line-height:1.4;padding-block:12px;transition:background .18s ease,border-color .18s ease}
.btn-ghost{border-color:var(--line)}
.hero{padding:clamp(48px,7vw,88px) 0;background:radial-gradient(ellipse at 90% 15%,#e6f1f9,transparent 58%)}
.hero .wrap{gap:clamp(28px,4vw,56px)}
.hero .lede{font-size:17px;line-height:1.75}
.stack-figure{padding:clamp(18px,2.4vw,30px);box-shadow:0 16px 48px #15233a09}
.layer{padding:20px}
.layer-title{flex-wrap:wrap;gap:4px 12px}
.flow{margin-bottom:10px;text-align:center;font-size:12px}
.flow svg{flex-shrink:0}
.band{padding:var(--section-space) 0}
.family-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:48px}
.family-nav a{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:20px 24px;border:1px solid #c4d8ee;border-radius:10px;background:var(--verify-tint);text-decoration:none;font-weight:600}
.family-nav a:last-child{background:var(--ai-tint);border-color:#bfe0d9;color:var(--ai-ink)}
.family-nav span{font-size:13px;font-weight:400}
.family{grid-template-columns:240px minmax(0,1fr);gap:40px}
.family-verify{border-top-color:var(--brand-ink)}
.family-ai{border-top-color:var(--ai)}
.family-intro{align-self:start;position:sticky;top:112px}
.family-intro p{font-size:15px}
.product{gap:20px 28px;padding-block:32px}
.product h3{font-size:21px;line-height:1.25}
.product p,.product li{font-size:15px;line-height:1.7}
.product ul{padding-left:20px}
.product-kind{font-size:12px;letter-spacing:.025em;color:var(--brand-ink)}
.family-ai .product-kind{color:var(--ai-ink)}
.product-visual{width:105px;height:auto;border-radius:8px}
.product .product-promise{font-weight:600;color:var(--ink)}
.product-link{font-weight:600;font-size:14px;text-decoration:none;display:inline-flex;gap:12px;align-items:center;min-height:44px;justify-self:start}
.product-link:hover{text-decoration:underline}
.journey{gap:16px}
.journey li{padding-right:8px}
.journey h3{line-height:1.3}
.service{border-top:2px solid var(--line);padding-top:22px}
.service h3{font-size:20px}
.cta{padding:var(--section-space) 0}
.cta .btn-primary{background:#fff;color:var(--ink)}
.cta .btn-primary:hover{background:var(--verify-tint)}
.foot-grid{grid-template-columns:1.1fr .9fr 1fr 1.2fr;gap:28px}
.foot-grid li{line-height:1.7}
.foot-grid li+li{margin-top:6px}
.foot-grid a{display:inline-block;padding-block:4px}
.footer-links{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.footer-links a{min-height:44px;display:inline-flex;align-items:center;font-size:14px;color:var(--ink-soft);text-decoration:none}
.footer-links a:hover{text-decoration:underline}
.foot-base{margin-top:20px}
@media(max-width:1050px){
 .menu-btn{display:inline-flex;align-items:center;cursor:pointer}
 .nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;padding:16px 24px 24px;background:var(--paper);border-bottom:1px solid var(--line);max-height:calc(100dvh - 80px);overflow-y:auto}
 .js .nav{display:none}.js .nav.open{display:flex}
 .nav a{padding:10px 12px}.nav .btn{margin-top:8px}
 html:not(.js) .site-head .wrap{flex-wrap:wrap;padding-block:16px}
 html:not(.js) .nav{position:static;display:flex;width:100%;max-height:none}
 html:not(.js) .menu-btn{display:none}
 .family{grid-template-columns:200px minmax(0,1fr);gap:28px}
 .product{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:960px){
 .hero .wrap{grid-template-columns:1fr}.hero-copy{max-width:720px}
 .stack-figure{width:100%;max-width:720px}
 .family{grid-template-columns:1fr}.family-intro{position:static;max-width:60ch}
 .product{grid-template-columns:repeat(2,minmax(0,1fr))}
 .journey{gap:36px}
}
@media(max-width:600px){
 .site-head .wrap{min-height:72px}.wordmark img{width:132px}
 .hero-copy{gap:20px}.hero-actions,.cta-actions{display:grid;grid-template-columns:1fr;width:100%}
 .family-nav,.product,.foot-grid{grid-template-columns:1fr}
 .family-nav{margin-bottom:32px}.family{padding-block:32px}
 .layer{padding:16px}.chips li{font-size:12px}.section-head{margin-bottom:32px}
 .principle{padding-right:0}.cta .wrap{gap:28px}
 .nav{max-height:calc(100dvh - 72px)}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}