:root{
  --navy:#1b3570;--blue:#3a75bd;--mint:#1fae7a;--green:#08795e;--mint-light:#5fd9ad;
  --ink:#14243d;--muted:#51627a;--border:#dde3ea;--pale:#f3f6f8;--deep:#0d2440;
  --dark-text:#c9d5e6;--dark-line:#3e5a8c;--field:#c6d0dc;
  --head:'Montserrat',Helvetica,Arial,sans-serif;--body:'DM Sans',Helvetica,Arial,sans-serif;
  --gutter:clamp(20px,5vw,56px);--section:clamp(56px,7vw,96px);--radius:6px;--header-h:77px;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:#fff;color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
main{flex:1}
h1,h2,h3,p,ul,dl,dd,figure{margin:0}
h1,h2,h3{font-family:var(--head);font-weight:600;color:var(--navy)}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--navy)}
img{display:block;max-width:100%;height:auto}
input,textarea,button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px}
.skip{position:fixed;left:16px;top:-100px;z-index:100;background:#fff;padding:10px 14px;border-radius:4px}
.skip:focus{top:12px}
.wrap{max-width:1280px;margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}

/* Header */
.header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:40px;padding-top:16px;padding-bottom:16px}
.brand{display:flex;align-items:center;gap:12px;color:var(--navy);margin-right:auto}
.brand:hover{color:var(--navy)}
.brand img{width:44px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--head);font-weight:700;font-size:22px;letter-spacing:1.5px;color:var(--navy)}
.brand-sub{font-size:12px;font-weight:500;color:var(--green);letter-spacing:.2px}
.nav{display:flex;gap:28px}
.nav a{font-size:15px;font-weight:600;color:var(--ink);padding:8px 0;border-bottom:2px solid transparent}
.nav a:hover{color:var(--green)}
.nav a[aria-current="page"]{color:var(--green);border-bottom-color:var(--mint)}
.menu-toggle{display:none}

/* Type & buttons */
.eyebrow{font-size:13px;font-weight:600;letter-spacing:1.6px;text-transform:uppercase;color:var(--green)}
.eyebrow-mint{color:var(--mint-light)}
h1{font-size:clamp(38px,4.6vw,64px);line-height:1.08;letter-spacing:-1.5px;text-wrap:balance}
.h1-page{font-size:clamp(32px,3.6vw,48px);line-height:1.15;letter-spacing:-1px}
h2{font-size:clamp(28px,3vw,40px);line-height:1.2;letter-spacing:-.8px;text-wrap:balance}
h3{font-size:22px;line-height:1.3}
.lead{font-size:19px;color:var(--muted);max-width:30em;text-wrap:pretty}
.lead-ink{font-size:20px;line-height:1.55;color:var(--ink)}
.lead-light{font-size:18px;color:var(--dark-text);max-width:28em}
.muted{color:var(--muted);text-wrap:pretty}
.button{display:inline-block;background:var(--navy);color:#fff;font-weight:600;font-size:15px;padding:15px 24px;border-radius:4px;border:1px solid var(--navy);cursor:pointer;transition:background .2s,border-color .2s}
.button:hover{background:var(--green);border-color:var(--green);color:#fff}
.button-outline{background:transparent;color:var(--navy)}
.button-outline:hover{background:var(--pale);border-color:var(--navy);color:var(--navy)}
.button-mint{background:var(--mint);border-color:var(--mint);color:var(--deep)}
.button-mint:hover{background:var(--mint-light);border-color:var(--mint-light);color:var(--deep)}
.text-link{font-weight:600;font-size:15px;border-bottom:2px solid var(--mint);padding-bottom:4px}
.actions,.links{display:flex;flex-wrap:wrap;gap:12px 24px}
.actions{gap:12px}

/* Layout */
.stack{display:flex;flex-direction:column;gap:40px}
.stack-sm{display:flex;flex-direction:column;gap:24px;align-items:flex-start}
.stack-lg{display:flex;flex-direction:column;gap:48px}
.page{padding-top:var(--section);padding-bottom:var(--section)}
.hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr));gap:clamp(32px,5vw,72px);align-items:center;padding-top:clamp(40px,6vw,88px);padding-bottom:clamp(40px,6vw,88px)}
.hero-copy{display:flex;flex-direction:column;gap:28px;align-items:flex-start}
.media{aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;background:var(--deep);width:100%}
.media img{width:100%;height:100%;object-fit:cover}
.media-wide{aspect-ratio:21/8}
.media-32{aspect-ratio:3/2;margin-top:8px}
.band{background:var(--pale);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.band>.wrap{padding-top:var(--section);padding-bottom:var(--section)}
.section-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 56px}
.head-title{max-width:640px;gap:20px}
.head-note{max-width:380px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:20px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:12px;color:var(--ink);transition:border-color .2s}
.card:hover{border-color:var(--mint);color:var(--ink)}
.card p{color:var(--muted)}
.rule{width:28px;height:3px}
.rule-green{background:var(--mint)}.rule-blue{background:var(--blue)}.rule-navy{background:var(--navy)}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:clamp(32px,6vw,88px);padding-top:var(--section);padding-bottom:var(--section)}
.split-top{align-items:start}
.split-title{display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.list>div{padding:20px 0;border-top:1px solid var(--border)}
.list>div:last-child{border-bottom:1px solid var(--border)}
.list h3{font-size:18px;margin-bottom:4px}
.list p{color:var(--muted)}

/* Science */
.science-card{border:1px solid var(--border);border-top-width:3px;border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:16px}
.science-card-green{border-top-color:var(--mint)}.science-card-blue{border-top-color:var(--blue)}.science-card-navy{border-top-color:var(--navy)}
.science-card h2{font-size:24px;line-height:1.25;letter-spacing:0}
.science-card ul{list-style:none;padding:16px 0 0;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:8px;font-size:15px}

/* Approach (dark) */
.dark{background:var(--navy);color:#fff}
.dark h1,.dark h2{color:#fff}
.list-dark>div{padding:28px 0;border-color:var(--dark-line)}
.list-dark>div:last-child{border-color:var(--dark-line)}
.list-dark h2{font-size:22px;letter-spacing:0;margin-bottom:8px}
.list-dark p{color:var(--dark-text)}

/* Contact */
.details{display:grid;gap:4px;padding-top:20px;border-top:1px solid var(--border);width:100%}
.details dt{font-size:13px;color:var(--muted)}
.details dt+dd+dt{margin-top:12px}
.details dd{font-size:18px;font-weight:500;overflow-wrap:anywhere}
.form{background:var(--pale);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;gap:18px}
.form h2{font-size:22px;letter-spacing:0}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600}
.form input,.form textarea{padding:12px 14px;border:1px solid var(--field);border-radius:4px;background:#fff;font-weight:400;font-size:16px}
.form textarea{resize:vertical}
.form input:focus,.form textarea:focus{border-color:var(--navy);outline:2px solid var(--mint);outline-offset:0}
.form .button{align-self:flex-start;padding:15px 28px}
.form-note{font-size:14px;color:var(--green)}
.form-note.is-error{color:#a12b2b}
.form .button[disabled]{opacity:.6;cursor:wait}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* CTA + footer */
.cta{background:var(--navy);color:#fff}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding-top:clamp(48px,6vw,80px);padding-bottom:clamp(48px,6vw,80px)}
.cta h2{color:#fff;font-size:clamp(26px,2.8vw,36px);letter-spacing:-.6px;max-width:18em}
.footer{border-top:1px solid var(--border)}
.footer-inner{display:flex;flex-wrap:wrap;gap:28px 56px;align-items:flex-start;padding-top:40px;padding-bottom:40px;font-size:14px;color:var(--muted)}
.footer-brand,.footer-nav,.footer-contact{display:flex;flex-direction:column;gap:6px}
.footer-brand{margin-right:auto}
.footer-brand .brand-name{font-size:18px}
.tagline{color:var(--green);font-weight:600;letter-spacing:1.2px;font-size:12px;margin-top:4px}
.footer-nav a{color:var(--ink)}
.footer-nav a:hover{color:var(--green)}
.copy{margin-top:12px}

/* Mobile menu */
@media (max-width:860px){
  :root{--header-h:69px}
  .header-inner{padding-top:12px;padding-bottom:12px;gap:16px}
  .brand img{width:38px}
  .brand-name{font-size:20px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;margin-right:-8px;background:none;border:0;border-radius:4px;cursor:pointer;color:var(--navy)}
  .bars{position:relative;width:22px;height:16px}
  .bars i{position:absolute;left:0;width:100%;height:2px;background:currentColor;border-radius:2px;transition:transform .2s,opacity .2s,top .2s}
  .bars i:nth-child(1){top:0}.bars i:nth-child(2){top:7px}.bars i:nth-child(3){top:14px}
  .menu-toggle[aria-expanded="true"] .bars i:nth-child(1){top:7px;transform:rotate(45deg)}
  .menu-toggle[aria-expanded="true"] .bars i:nth-child(2){opacity:0}
  .menu-toggle[aria-expanded="true"] .bars i:nth-child(3){top:7px;transform:rotate(-45deg)}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 12px 24px rgba(13,36,64,.08);padding:8px var(--gutter) 16px;max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .nav.open{display:flex}
  .nav a{font-size:17px;padding:14px 0;border-bottom:1px solid var(--border)}
  .nav a:last-child{border-bottom:0}
  .nav a[aria-current="page"]{border-bottom-color:var(--border);box-shadow:inset 3px 0 0 var(--mint);padding-left:14px}
  body.menu-open{overflow:hidden}
}
@media (max-width:560px){
  .media-wide{aspect-ratio:3/2}
  .card,.science-card{padding:24px}
  .footer-brand{width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}