:root{
  --dark:#2E2E30; --dark2:#404042; --blue:#22A9DF; --blue2:#1A8FC2; --blue3:#6CC8EE;
  --bg-light:#F4F6F8; --border:#E6E8EB; --muted:#5C5D61; --faint:#8A8B8F;
  --accent-bg:#EAF6FC; --accent-fg:#1A6F96;
  --footer-bg:#232325; --footer-border:#3A3A3D; --footer-muted:#8A8B8F; --footer-text:#B9BABE;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--dark2);font-family:'Barlow',sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--blue2);text-decoration:none}
a:hover{color:var(--dark2);text-decoration:underline}
img{max-width:100%}
h1,h2,h3{font-family:'Barlow Semi Condensed',sans-serif;margin:0}
.container{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--border)}
.site-header .container{padding-top:10px;padding-bottom:10px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.logo{display:flex;align-items:center}
.logo img{height:72px;width:auto;display:block;mix-blend-mode:multiply}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a.nav-link{position:relative;padding:12px 14px;font-weight:600;font-size:15px;color:var(--dark2);display:inline-block;text-decoration:none}
.nav a.nav-link:hover{color:var(--blue)}
.nav a.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;border-radius:2px;background:var(--blue)}
.nav a.btn-work{margin-left:10px}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;background:none;border:none;padding:0;cursor:pointer;color:var(--dark2)}
.nav-toggle svg{display:block;width:24px;height:24px}
.nav-scrim{display:none}

/* buttons */
.btn{display:inline-block;padding:15px 24px;font-weight:600;border-radius:4px;cursor:pointer;text-align:center;border:none;font-size:15px;font-family:inherit;text-decoration:none}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue2);color:#fff}
.btn-outline{border:1.5px solid #fff;color:#fff;background:transparent;padding:13.5px 22.5px}
.btn-outline:hover{background:#fff;color:var(--dark)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#000;color:#fff}

/* home hero */
.hero{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.hero-ring{position:absolute;right:-220px;top:40px;width:900px;height:520px;border-radius:50%;border:28px solid var(--blue);border-left-color:transparent;border-top-color:transparent;transform:rotate(-18deg);opacity:.9;pointer-events:none}
.hero .container{padding:104px 32px 112px;position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:56px;align-items:center}
.eyebrow{font-size:14px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue3);margin-bottom:24px}
.hero h1{font-style:italic;font-weight:700;font-size:clamp(56px,7.4vw,104px);line-height:.98;margin:0 0 24px;text-wrap:balance}
.hero p{font-size:20px;line-height:1.5;color:#D4D5D8;max-width:460px;margin:0 0 40px;text-wrap:pretty}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-img{height:440px;border-radius:6px;overflow:hidden;position:relative}
.hero-img img{width:100%;height:100%;object-fit:cover;display:block}

/* strip */
.strip{border-bottom:1px solid var(--border)}
.strip .container{padding:28px 32px;display:flex;gap:16px 40px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.strip-label{font-size:14px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.strip-items{display:flex;gap:12px 36px;flex-wrap:wrap;font-weight:600;font-size:17px;color:var(--dark2)}

/* practice cards */
.section{padding:104px 32px 40px}
.section h2{font-style:italic;font-weight:700;font-size:44px;line-height:1.05;margin:0 0 48px;color:var(--dark)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(340px,100%),1fr));gap:24px}
.card{border-radius:6px;padding:40px;cursor:pointer;display:flex;flex-direction:column;gap:20px;border-top:4px solid var(--blue);text-decoration:none}
.card-light{background:var(--bg-light);color:var(--dark2)}
.card-light:hover{background:var(--accent-bg)}
.card-dark{background:var(--dark);color:#fff}
.card-dark:hover{background:var(--dark2)}
.card-kicker{font-size:14px;font-weight:600;letter-spacing:.12em;text-transform:uppercase}
.card-title{font-family:'Barlow Semi Condensed',sans-serif;font-weight:700;font-size:30px;line-height:1.1}
.card-list{display:flex;flex-direction:column;gap:10px;font-size:17px}
.card-cta{margin-top:auto;font-weight:600}

/* reach */
.reach{padding:80px 32px 104px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.reach-img{height:420px;border-radius:6px;overflow:hidden}
.reach-img img{width:100%;height:100%;object-fit:cover;display:block}
.reach h2{font-style:italic;font-weight:700;font-size:40px;line-height:1.08;margin:0 0 20px;color:var(--dark);text-wrap:balance}
.reach p{font-size:18px;line-height:1.65;color:var(--muted);margin:0 0 28px;text-wrap:pretty}
.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{padding:8px 14px;font-weight:600;font-size:15px;border-radius:3px}
.tag-on{background:var(--accent-bg);color:var(--accent-fg)}
.tag-off{background:var(--bg-light);color:var(--dark2)}

/* page intro banner */
.page-intro{background:var(--bg-light);border-bottom:1px solid var(--border)}
.page-intro.dark{background:var(--dark);color:#fff}
.page-intro .container{padding:88px 32px 72px}
.page-intro h1{font-style:italic;font-weight:700;font-size:clamp(38px,4.6vw,60px);line-height:1.04;margin:0 0 24px;color:var(--dark);max-width:900px;text-wrap:balance}
.page-intro.dark h1{color:#fff}
.page-intro p{font-size:19px;line-height:1.6;color:var(--muted);max-width:700px;margin:0;text-wrap:pretty}
.page-intro.dark p{color:#D4D5D8}

/* research rows */
.rows{max-width:1240px;margin:0 auto;padding:40px 32px 104px}
.row{display:grid;grid-template-columns:120px minmax(0,1fr) minmax(0,1.3fr);gap:32px;padding:48px 0;border-bottom:1px solid var(--border);align-items:start}
.row-n{font-style:italic;font-weight:700;font-size:44px;color:var(--blue);line-height:1}
.row-title{font-weight:700;font-size:30px;line-height:1.1;margin:0;color:var(--dark)}
.row-body{font-size:18px;line-height:1.65;color:var(--muted);margin:0;text-wrap:pretty}

/* engineering grid */
.eng-grid{max-width:1240px;margin:0 auto;padding:72px 32px 104px}
.eng-cells{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(340px,100%),1fr));gap:1px;background:var(--border);border:1px solid var(--border)}
.eng-cell{background:#fff;padding:36px 32px;display:flex;flex-direction:column;gap:14px}
.eng-n{font-size:14px;font-weight:600;color:var(--blue2);letter-spacing:.08em}
.eng-title{font-weight:700;font-size:25px;line-height:1.15;margin:0;color:var(--dark)}
.eng-body{font-size:16.5px;line-height:1.6;color:var(--muted);margin:0;text-wrap:pretty}
.eng-kit{margin-top:auto;padding-top:14px;border-top:1px dashed #D4D5D8;font-size:14.5px;color:var(--dark2)}
.eng-kit b{font-weight:600;color:var(--blue2)}

/* clients grid */
.clients-grid{max-width:1240px;margin:0 auto;padding:72px 32px 104px}
.clients-cells{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(260px,100%),1fr));gap:24px}
.client-card{background:#fff;border:1px solid var(--border);border-radius:6px;display:flex;flex-direction:column}
.client-logo{height:160px;display:flex;align-items:center;justify-content:center;padding:28px 32px}
.client-logo img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.client-name{border-top:1px solid var(--border);padding:14px 20px;font-size:15px;font-weight:600;color:var(--dark2)}

/* about */
.about-hero{max-width:1240px;margin:0 auto;padding:88px 32px 72px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:56px;align-items:center}
.about-hero h1{font-style:italic;font-weight:700;font-size:clamp(38px,4.6vw,60px);line-height:1.04;margin:0 0 24px;color:var(--dark);text-wrap:balance}
.about-hero p{font-size:19px;line-height:1.6;color:var(--muted);margin:0 0 16px;text-wrap:pretty}
.about-img{height:460px;border-radius:6px;overflow:hidden}
.about-img img{width:100%;height:100%;object-fit:cover;display:block}
.vision-mission{background:var(--dark);color:#fff}
.vision-mission .container{padding:88px 32px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(380px,100%),1fr));gap:56px 72px}
.vm-block{border-top:3px solid var(--blue);padding-top:28px}
.vm-kicker{font-size:14px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue3);margin-bottom:20px}
.vm-text{font-weight:600;font-size:clamp(22px,2.2vw,27px);line-height:1.4;margin:0;text-wrap:pretty}
.structure{max-width:1240px;margin:0 auto;padding:88px 32px 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:56px}
.structure h2{font-style:italic;font-weight:700;font-size:40px;line-height:1.08;margin:0;color:var(--dark)}
.structure p{font-size:18px;line-height:1.65;color:var(--muted);margin:0;text-wrap:pretty}
.office{max-width:1240px;margin:0 auto;padding:64px 32px 0}
.office-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:260px 260px;gap:16px}
.office-grid img{width:100%;height:100%;object-fit:cover;border-radius:6px;display:block}
.values{max-width:1240px;margin:0 auto;padding:88px 32px 104px}
.values h2{font-style:italic;font-weight:700;font-size:40px;margin:0 0 40px;color:var(--dark)}
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:24px}
.value{border-top:3px solid var(--blue);padding-top:22px}
.value-title{font-weight:700;font-size:24px;color:var(--dark);margin-bottom:10px}
.value-body{font-size:16.5px;line-height:1.6;color:var(--muted)}

/* contact */
.contact{max-width:1240px;margin:0 auto;padding:88px 32px 104px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:64px}
.contact h1{font-style:italic;font-weight:700;font-size:clamp(38px,4.6vw,56px);line-height:1.04;margin:0 0 24px;color:var(--dark);text-wrap:balance}
.contact-intro{font-size:18px;line-height:1.6;color:var(--muted);margin:0 0 40px}
.contact-email{font-weight:700;font-size:26px;color:var(--blue2)}
.offices{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.office-card{background:var(--bg-light);padding:28px;border-radius:6px}
.office-kicker{font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:8px}
.office-city{font-weight:700;font-size:28px;color:var(--dark)}
.office-country{font-size:16px;color:var(--muted)}
.form-panel{background:#fff;border:1px solid var(--border);border-radius:6px;padding:40px}
.form-field{display:flex;flex-direction:column;gap:8px;font-weight:600;font-size:15px;margin-bottom:20px}
.form-field input,.form-field textarea{font:inherit;font-weight:400;font-size:16px;padding:13px 14px;border:1px solid #D4D5D8;border-radius:4px;outline:none}
.form-field input:focus,.form-field textarea:focus{border-color:var(--blue)}
.topics{display:flex;gap:8px;flex-wrap:wrap}
.topic{padding:10px 16px;border-radius:3px;cursor:pointer;font-weight:600;font-size:15px;border:1.5px solid #D4D5D8;background:#fff;color:var(--dark2)}
.topic.on{border-color:var(--blue);background:var(--accent-bg);color:var(--accent-fg)}
.thanks{padding:60px 0;text-align:center}
.thanks-title{font-style:italic;font-weight:700;font-size:34px;color:var(--dark);margin-bottom:12px}
.thanks-body{font-size:17px;color:var(--muted)}

/* cta */
.cta{background:var(--blue);color:#fff}
.cta .container{padding:64px 32px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta h2{font-style:italic;font-weight:700;font-size:clamp(28px,3.4vw,42px);line-height:1.1;margin:0;max-width:720px;color:#fff}

/* footer */
.site-footer{background:var(--footer-bg);color:var(--footer-text)}
.footer-grid{max-width:1240px;margin:0 auto;padding:64px 32px 32px;display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:40px}
.footer-brand{font-style:italic;font-weight:700;font-size:28px;color:#fff;letter-spacing:.02em}
.footer-brand-sub{font-weight:600;font-style:italic;color:var(--blue);margin-bottom:16px}
.footer-desc{font-size:15px;line-height:1.6;max-width:320px}
.footer-col{display:flex;flex-direction:column;gap:10px;font-size:15px}
.footer-col-title{font-weight:600;color:#fff;margin-bottom:4px}
.footer-col a{color:var(--footer-text)}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{max-width:1240px;margin:0 auto;padding:20px 32px 32px;border-top:1px solid var(--footer-border);font-size:14px;color:var(--footer-muted)}

@media (max-width:900px){
  .hero .container,.reach,.about-hero,.contact,.structure{grid-template-columns:1fr}
  .hero-img,.reach-img,.about-img{height:320px}
  .office-grid{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(3,200px)}
  .office-grid img:first-child{grid-column:span 2;grid-row:span 2}

  /* collapsible nav */
  .site-header .container{padding-top:8px;padding-bottom:8px}
  .logo img{height:52px}
  .nav-toggle{display:inline-flex}
  .nav{position:fixed;top:0;right:0;bottom:0;z-index:30;width:min(320px,85vw);height:100vh;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:88px 24px 24px;box-shadow:-8px 0 24px rgba(0,0,0,.15);transform:translateX(100%);transition:transform .25s ease;overflow-y:auto}
  .nav.open{transform:translateX(0)}
  .nav a.nav-link{padding:16px 4px;font-size:17px;border-bottom:1px solid var(--border)}
  .nav a.nav-link.active::after{left:4px;right:auto;bottom:14px;width:24px}
  .nav a.btn-work{margin-left:0;margin-top:20px;text-align:center}
  .nav-scrim{display:block;position:fixed;inset:0;z-index:25;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity .25s ease}
  .nav-scrim.open{opacity:1;pointer-events:auto}
}
@media (max-width:640px){
  .row{grid-template-columns:1fr}
  .offices{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:48px 20px 24px}
  .footer-bottom{padding:16px 20px 24px}

  .container{padding-left:20px;padding-right:20px}
  .hero .container{padding:56px 20px 64px}
  .hero h1{font-size:clamp(42px,13vw,72px)}
  .hero p{font-size:18px}
  .hero-img{height:240px}
  .strip .container{padding:20px}
  .section{padding:56px 20px 24px}
  .section h2{font-size:30px;margin-bottom:32px}
  .reach{padding:48px 20px 56px}
  .reach-img{height:240px}
  .page-intro .container{padding:48px 20px 40px}
  .rows{padding:16px 20px 56px}
  .row{padding:32px 0}
  .eng-grid,.clients-grid{padding:40px 20px 56px}
  .about-hero{padding:48px 20px 40px}
  .about-img{height:280px}
  .vision-mission .container{padding:48px 20px;gap:40px}
  .structure{padding:48px 20px 0}
  .office{padding:40px 20px 0}
  .values{padding:48px 20px 56px}
  .values h2{font-size:32px}
  .contact{padding:48px 20px 56px}
  .cta .container{padding:40px 20px;flex-direction:column;align-items:flex-start;text-align:left}
}