/* ===== Tokens ===== */
:root{
  --bg:#ffffff;
  --tint:#f5f8fc;
  --tint-2:#eef3fa;
  --ink:#0f1729;
  --muted:#566175;
  --faint:#8a94a6;
  --line:#e7ebf2;
  --line-2:#dde3ee;
  --indigo:#0097a7;      /* brand teal — primary action colour */
  --indigo-d:#007d8c;    /* teal, darker */
  --teal:#0097a7;
  --blue:#0d2b45;        /* brand deep blue */
  --green:#6bbf59;       /* brand green accent */
  --pink:#0097a7;        /* One Health: human (teal) */
  --amber:#0d2b45;       /* One Health: animal (deep blue) */
  --dark:#0d2b45;
  --maxw:1140px;
  --display:"Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--display);letter-spacing:-.02em;line-height:1.12}
.inf{color:var(--teal)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:600;font-size:15px;
  padding:11px 20px;border-radius:11px;transition:transform .15s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease;white-space:nowrap;cursor:pointer}
.btn--lg{padding:14px 26px;font-size:16px}
.btn--primary{background:var(--indigo);color:#fff;box-shadow:0 6px 18px rgba(0,151,167,.30)}
.btn--primary:hover{background:var(--indigo-d);transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,151,167,.36)}
.btn--ghost{border:1px solid var(--line-2);color:var(--ink);background:#fff}
.btn--ghost:hover{border-color:var(--indigo);color:var(--indigo);transform:translateY(-2px)}

/* ===== Nav ===== */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(255,255,255,0);transition:background .3s,border-color .3s,box-shadow .3s;border-bottom:1px solid transparent}
.nav.is-scrolled{background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(15,23,41,.02)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand__logo{height:34px;width:auto}
.brand__name{font-family:var(--display);font-weight:700;font-size:19px}
.nav__links{display:flex;gap:26px}
.nav__links a{font-size:15px;color:var(--muted);font-weight:500;transition:color .2s}
.nav__links a:hover{color:var(--ink)}
.nav__cta{padding:9px 16px;font-size:14px}
.nav__burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:9px;margin-left:6px;background:none;border:none;cursor:pointer}
.nav__burger span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.nav.is-open .nav__burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.is-open .nav__burger span:nth-child(2){opacity:0}
.nav.is-open .nav__burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{padding:140px 24px 70px;background:
  radial-gradient(80% 60% at 85% 0%, rgba(0,151,167,.12), transparent 60%),
  radial-gradient(70% 60% at 0% 20%, rgba(13,43,69,.07), transparent 55%);
}
.hero__inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.eyebrow{display:inline-block;font-weight:600;font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--indigo);background:rgba(0,151,167,.10);padding:6px 12px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(34px,5vw,54px);font-weight:700;margin-bottom:20px}
.hero__lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:46ch}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero__note{margin-top:22px;font-size:13.5px;color:var(--faint)}

/* App window mock */
.window{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;
  box-shadow:0 30px 70px rgba(15,23,41,.14),0 6px 16px rgba(15,23,41,.06)}
.window__bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:var(--tint);border-bottom:1px solid var(--line)}
.window__bar .dot{width:11px;height:11px;border-radius:50%;background:#cfd6e2}
.window__bar .dot:nth-child(1){background:#ff5f57}
.window__bar .dot:nth-child(2){background:#febc2e}
.window__bar .dot:nth-child(3){background:#28c840}
.window__url{margin-left:10px;font-size:12.5px;color:var(--faint);font-family:var(--sans)}
.window__body{padding:22px;display:flex;justify-content:center;background:#fff}
.window__body img{max-height:360px;width:auto}

/* ===== Band ===== */
.band{background:var(--ink);color:#fff;padding:48px 24px}
.band__inner{max-width:920px;margin:0 auto;text-align:center}
.band__text{font-family:var(--display);font-weight:500;font-size:clamp(19px,2.4vw,26px);line-height:1.4;color:#dfe5f0}
.band__text strong{color:#fff}

/* ===== Sections ===== */
.section{max-width:var(--maxw);margin:0 auto;padding:88px 24px}
.section--tint{max-width:none;background:var(--tint)}
.section--tint>*{max-width:var(--maxw);margin-inline:auto}
.section__head{margin-bottom:46px;max-width:760px}
.section__head--center{margin-inline:auto;text-align:center}
.kicker{display:inline-block;font-weight:600;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}
.kicker--light{color:#5eead4}
.section__head h2{font-size:clamp(26px,3.6vw,38px);font-weight:700}
.section__intro{margin-top:16px;font-size:18px;color:var(--muted)}

/* ===== Grids / features ===== */
.grid{display:grid;gap:18px}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.feature{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;transition:transform .2s,box-shadow .2s,border-color .2s}
.feature:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(15,23,41,.07);border-color:var(--line-2)}
.feature__ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px}
.feature__ic svg{width:24px;height:24px}
.ic--blue{background:rgba(0,151,167,.12);color:var(--teal)}
.ic--violet{background:rgba(13,43,69,.10);color:var(--blue)}
.ic--green{background:rgba(107,191,89,.18);color:#4e9e3f}
.ic--amber{background:rgba(245,158,11,.16);color:#d97706}
.feature h3{font-size:19px;font-weight:600;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}

/* Figures */
.figure{margin-top:40px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;text-align:center;
  box-shadow:0 14px 40px rgba(15,23,41,.05)}
.figure img{margin:0 auto;width:auto;max-width:100%}
.figure--plain{box-shadow:none;background:transparent;border:none;padding:10px}
.figure figcaption{margin-top:16px;font-size:14px;color:var(--faint)}

/* Steps */
.steps .step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.step__n{font-family:var(--display);font-weight:700;font-size:14px;color:var(--teal);letter-spacing:.06em}
.step h3{font-size:18px;font-weight:600;margin:8px 0 7px}
.step p{color:var(--muted);font-size:14.5px}

/* ===== One Health ===== */
.oh{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center}
.oh__text h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;margin-bottom:16px}
.oh__text p{color:var(--muted);font-size:17px}
.triad{display:flex;gap:20px;flex-wrap:wrap;margin:24px 0}
.triad__item{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px}
.d{width:12px;height:12px;border-radius:50%}
.d--pink{background:var(--pink)}.d--amber{background:var(--amber)}.d--green{background:var(--green)}
.trace{background:var(--tint);border:1px solid var(--line);border-radius:14px;padding:20px 22px;max-width:340px}
.trace__label{font-size:13px;color:var(--muted);margin-bottom:10px}
.trace__code{font-family:"Sora",monospace;font-weight:700;font-size:26px;letter-spacing:.02em;color:var(--ink)}
.trace__code span{color:var(--faint);margin:0 2px}
.trace__legend{display:flex;gap:0;margin-top:8px}
.trace__legend span{flex:1;font-size:11px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.trace__legend span:nth-child(2){text-align:center}
.trace__legend span:nth-child(3){text-align:right}
.oh__fig{margin-top:0}

/* ===== Impact (dark) ===== */
.section--dark{max-width:none;background:
  radial-gradient(60% 80% at 50% 0%, rgba(14,165,183,.16), transparent 60%),var(--dark);color:#fff;padding:88px 24px}
.section--dark>*{max-width:var(--maxw);margin-inline:auto}
.section--dark .section__head h2{color:#fff}
.section--dark .section__intro{color:#aab4c6}
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:8px}
.stat{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:22px 16px;text-align:center}
.stat__n{display:block;font-family:var(--display);font-weight:700;font-size:clamp(26px,3vw,34px);
  background:linear-gradient(120deg,#3dd3e2,#8fd56f);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat__l{font-size:12.5px;color:#aab4c6;margin-top:6px;display:block}
.impact__foot{margin-top:26px;text-align:center;color:#8b95a8;font-size:14.5px;max-width:70ch;margin-inline:auto}

/* ===== Stack ===== */
.stack{margin-top:40px;background:var(--tint);border:1px solid var(--line);border-radius:16px;padding:24px 26px}
.stack__label{font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.stack__list{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.stack__list li{font-size:14px;font-weight:500;color:var(--ink);background:#fff;border:1px solid var(--line-2);border-radius:999px;padding:7px 15px}

/* ===== CTA ===== */
.cta{padding:30px 24px 90px}
.cta__inner{max-width:var(--maxw);margin:0 auto;background:linear-gradient(135deg,#0097a7,#0d2b45);
  border-radius:24px;padding:60px 40px;text-align:center;color:#fff;box-shadow:0 30px 70px rgba(0,151,167,.22)}
.cta__inner h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;margin-bottom:12px}
.cta__inner p{color:rgba(255,255,255,.9);font-size:18px;max-width:52ch;margin:0 auto}
.cta__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.cta .btn--primary{background:#fff;color:var(--indigo-d);box-shadow:0 10px 26px rgba(0,0,0,.16)}
.cta .btn--primary:hover{background:#f3f4ff}
.cta .btn--ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.cta .btn--ghost:hover{border-color:#fff;color:#fff}

/* ===== Footer ===== */
.footer{border-top:1px solid var(--line);background:var(--tint)}
.footer__inner{max-width:var(--maxw);margin:0 auto;padding:34px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.footer__brand{display:flex;align-items:center;gap:9px;font-family:var(--display);font-weight:700;font-size:17px}
.footer__credit{flex:1;min-width:260px;color:var(--muted);font-size:13.5px}
.footer__link{color:var(--indigo);font-weight:600;font-size:14px}

/* ===== Reveal ===== */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].is-in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:960px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(3,1fr)}
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .oh{grid-template-columns:1fr;gap:32px}
}
@media (max-width:680px){
  .nav__burger{display:flex}
  .nav__inner{gap:10px}
  .nav__cta{padding:8px 12px;font-size:13px}
  .brand__name{font-size:18px}
  .nav__links{position:fixed;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(255,255,255,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
    padding:6px 24px 16px;transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease}
  .nav.is-open .nav__links{opacity:1;transform:none;pointer-events:auto}
  .nav__links a{padding:14px 2px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav__links a:last-child{border-bottom:none}
  .grid--3,.grid--4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 22px}
  .hero{padding:120px 22px 50px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none;transition:none}
}