/* ============================================================
   NeuReach marketing site — shared stylesheet
   Vanilla CSS, mobile-first responsive. One file for all pages.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  --white:#ffffff; --ink:#1A2230; --ink-2:#2A3645;
  --navy:#0D1F35; --navy-2:#0F2742; --navy-deep:#0A1827;
  --teal:#009E8F; --teal-bright:#3FD3C2; --teal-2:#11B6A4;
  --muted:#5B6B7B; --muted-2:#6B7785; --muted-3:#94A1AE; --slate:#42505F;
  --line:#ECEAE5; --line-2:#E0E4E9; --line-3:#EEF0F3;
  --cream:#FBFAF8; --cream-2:#FAF8F5; --mint:#E1F2EF; --mint-2:#F4FBFA; --panel:#FCFCFD;
  --r-sm:11px; --r:14px; --r-md:16px; --r-lg:20px; --r-xl:28px;
  --maxw:1240px; --pad:28px;
  --shadow-cta:0 12px 28px -10px rgba(0,158,143,.7);
  --font:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-mono:'Space Grotesk',var(--font);
}

/* ---------- Reset / base ---------- */
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--white);font-family:var(--font);color:var(--ink);
  line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{display:block;max-width:100%;}
svg{display:block;}
a{text-decoration:none;color:inherit;}
button{font-family:inherit;cursor:pointer;}
::selection{background:var(--teal);color:#fff;}
h1,h2,h3,h4,p{margin:0;}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);}
.section{padding:clamp(60px,9vw,104px) 0;}
.section--cream{background:var(--cream-2);}
.section--white{background:var(--white);}
.section--navy{background:var(--navy);color:#fff;}
.section-head{max-width:720px;margin:0 auto clamp(36px,5vw,56px);text-align:center;}
.section-head.left{margin-left:0;text-align:left;}

/* ---------- Typography ---------- */
.eyebrow{font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--teal);margin-bottom:14px;}
.section--navy .eyebrow{color:var(--teal-bright);}
h1,.h1{font-size:clamp(34px,6.2vw,62px);line-height:1.05;font-weight:800;letter-spacing:-.03em;}
h2,.h2{font-size:clamp(28px,4.6vw,44px);line-height:1.1;font-weight:800;letter-spacing:-.02em;}
h3,.h3{font-size:clamp(19px,2.4vw,24px);line-height:1.2;font-weight:800;letter-spacing:-.01em;}
.lead{font-size:clamp(16px,2.1vw,19px);line-height:1.6;color:var(--muted);}
.section--navy .lead{color:rgba(255,255,255,.72);}
.teal{color:var(--teal);}
.teal-bright{color:var(--teal-bright);}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-size:16px;font-weight:700;
  padding:15px 26px;border-radius:13px;border:1px solid transparent;transition:transform .15s,box-shadow .2s;}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:#fff;box-shadow:var(--shadow-cta);}
.btn-ghost{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.18);color:#fff;}
.btn-sm{padding:11px 20px;border-radius:var(--r-sm);font-size:15px;}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;height:74px;display:flex;align-items:center;
  background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-3);
  transition:box-shadow .3s,background .3s;}
.nav.scrolled{box-shadow:0 6px 24px -12px rgba(13,31,53,.28);background:rgba(255,255,255,.94);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand img{width:40px;height:40px;border-radius:10px;}
.brand-name{font-size:23px;font-weight:800;letter-spacing:-.04em;}
.brand-tm{font-size:.5em;font-weight:700;vertical-align:super;letter-spacing:0;}
.brand-tag{font-family:var(--font-mono);font-size:13.5px;font-weight:700;color:var(--ink-2);
  line-height:1.18;padding-left:10px;margin-left:6px;border-left:1px solid var(--line-2);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{font-size:15px;font-weight:600;color:var(--slate);}
.nav-links a.active{font-weight:700;color:var(--navy);}
.hamburger{display:none;background:none;border:0;padding:8px;width:44px;height:44px;}
.hamburger span{display:block;width:24px;height:2px;background:var(--navy);margin:5px auto;
  border-radius:2px;transition:transform .25s,opacity .2s;}
.nav.open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav.open .hamburger span:nth-child(2){opacity:0;}
.nav.open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{position:relative;background:radial-gradient(120% 90% at 78% 8%,#0F2742 0%,#0D1F35 55%,#0A1827 100%);
  color:#fff;padding:clamp(120px,16vw,170px) 0 clamp(70px,10vw,120px);overflow:hidden;}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px,rgba(255,255,255,.05) 1px,transparent 0);background-size:34px 34px;}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,56px);align-items:center;}
.pill{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:13px;
  font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-bright);
  background:rgba(63,211,194,.1);border:1px solid rgba(63,211,194,.28);padding:8px 15px;border-radius:100px;margin-bottom:24px;}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--teal-bright);box-shadow:0 0 10px var(--teal-bright);}
.hero-brand{display:flex;align-items:center;gap:15px;margin-bottom:20px;}
.hero-brand img{width:58px;height:58px;border-radius:14px;flex-shrink:0;}
.hero-brand-name{font-size:clamp(30px,4.4vw,40px);font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff;}
.hero-brand-tag{font-family:var(--font-mono);font-size:clamp(13px,1.7vw,15px);font-weight:600;color:rgba(255,255,255,.62);margin-top:6px;}
.hero p{color:rgba(255,255,255,.72);max-width:520px;margin:22px 0 34px;font-size:clamp(16px,2.2vw,20px);line-height:1.55;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:flex;align-items:center;gap:22px;margin-top:44px;flex-wrap:wrap;}
.hero-stats .num{font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.03em;}
.hero-stats .lbl{font-size:13.5px;color:rgba(255,255,255,.5);font-weight:500;}
.hero-stats .sep{width:1px;height:38px;background:rgba(255,255,255,.14);}
.hero-visual{position:relative;height:min(480px,78vw);}
.hero-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1;}
.hero-glow{position:absolute;top:50%;left:50%;width:330px;height:330px;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(0,158,143,.42) 0%,rgba(0,158,143,0) 68%);}
.hero-ring{position:absolute;top:50%;left:50%;width:200px;height:200px;transform:translate(-50%,-50%);
  border:1px solid rgba(63,211,194,.33);border-radius:50%;animation:pulsering 4.5s ease-out infinite;}
.hero-ring.delay{animation-delay:2.2s;}
.hero-neuron{position:absolute;top:50%;left:50%;width:220px;height:220px;transform:translate(-50%,-50%);
  animation:floaty 6s ease-in-out infinite;filter:drop-shadow(0 8px 30px rgba(0,158,143,.5));}
.chip{position:absolute;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(6px);padding:10px 15px;border-radius:12px;font-size:14px;font-weight:600;z-index:2;
  animation:drift 7s ease-in-out infinite,chipglow 4.2s ease-in-out infinite;}
@keyframes floaty{0%,100%{transform:translate(-50%,-50%);}50%{transform:translate(-50%,calc(-50% - 14px));}}
@keyframes pulsering{0%{transform:translate(-50%,-50%) scale(.9);opacity:.55;}70%{opacity:0;}100%{transform:translate(-50%,-50%) scale(1.7);opacity:0;}}
@keyframes drift{0%,100%{transform:translateY(0) translateX(0);}50%{transform:translateY(-10px) translateX(6px);}}
@keyframes chipglow{0%,100%{box-shadow:0 0 0 0 rgba(63,211,194,0);}50%{box-shadow:0 0 16px 0 rgba(63,211,194,.45);border-color:rgba(63,211,194,.5);}}
@keyframes signal{0%{stroke-dashoffset:103;}55%{stroke-dashoffset:1;}100%{stroke-dashoffset:1;}}

/* ---------- Trust strip ---------- */
.trust{background:var(--navy-deep);color:rgba(255,255,255,.4);padding:20px 0;border-top:1px solid rgba(255,255,255,.06);}
.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.trust .mono{font-family:var(--font-mono);font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;}
.trust .em{font-size:16px;font-weight:700;color:rgba(255,255,255,.7);}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:18px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.card{background:var(--cream);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;}
.card--panel{background:var(--panel);border-color:#E7EAEE;}
.card--mint{background:linear-gradient(180deg,var(--mint-2),#fff);border-color:#D9E7E3;}
.card h3{margin-bottom:8px;}
.card p{font-size:14.5px;line-height:1.55;color:var(--muted-2);}
.feat-icon{width:48px;height:48px;border-radius:12px;background:var(--mint);display:flex;
  align-items:center;justify-content:center;font-size:23px;margin-bottom:18px;}
.tag{font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.08em;
  padding:5px 11px;border-radius:100px;}
.tag--live{color:var(--teal);background:var(--mint);}
.tag--planned{color:var(--muted-3);background:#F1F3F6;}

/* ---------- Reveal animation ---------- */
@keyframes rise{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:none;}}
[data-reveal]{animation:rise .7s cubic-bezier(.22,.61,.36,1) both;}
@supports (animation-timeline:view()){
  @media (min-width:641px){
    [data-reveal]{animation:rise linear both;animation-timeline:view();animation-range:entry 0% cover 22%;}
  }
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* ---------- Footer ---------- */
.footer{background:var(--navy-deep);color:rgba(255,255,255,.55);padding:56px 0 36px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.03em;}
.footer-col a{display:block;font-size:14.5px;margin-bottom:11px;color:rgba(255,255,255,.55);}
.footer-col a:hover{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.6;max-width:300px;margin-top:14px;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;
  gap:12px;padding-top:24px;font-size:13px;}
.footer-bottom .mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- CTA band ---------- */
.cta-band{background:radial-gradient(120% 140% at 80% 0%,#0F2742,#0D1F35);border-radius:var(--r-xl);
  padding:clamp(48px,7vw,74px) clamp(24px,5vw,56px);text-align:center;color:#fff;position:relative;overflow:hidden;}
.cta-band .glow{position:absolute;top:-60px;left:50%;transform:translateX(-50%);width:300px;height:300px;
  background:radial-gradient(circle,rgba(0,158,143,.35),transparent 70%);}

/* ---------- Forms (contact) ---------- */
.form-card{background:#fff;border-radius:22px;padding:clamp(24px,4vw,36px);box-shadow:0 40px 90px -40px rgba(0,0,0,.55);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--slate);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line-2);border-radius:var(--r-sm);
  padding:13px 14px;font-size:15px;color:var(--ink);font-family:inherit;transition:border-color .2s,box-shadow .2s;}
.field textarea{resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(0,158,143,.14);}
.field input::placeholder,.field textarea::placeholder{color:#9AA6B2;}
.form-submit{width:100%;background:var(--teal);color:#fff;font-size:16px;font-weight:700;
  padding:15px;border:none;border-radius:12px;box-shadow:var(--shadow-cta);transition:transform .15s;}
.form-submit:hover{transform:translateY(-1px);}
.form-note{font-size:12.5px;color:#9AA6B2;text-align:center;margin-top:14px;}
.form-error{display:none;font-size:12.5px;color:#D14343;text-align:center;margin-top:12px;}
.hpot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}

/* ---------- Avatars / team ---------- */
.avatar{border-radius:50%;border:2px solid var(--teal);overflow:hidden;flex-shrink:0;}
.avatar img{width:100%;height:100%;object-fit:cover;}
.person{display:flex;align-items:center;gap:15px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;}

/* ---------- Engine section (home) ---------- */
.engine-split{grid-template-columns:1.25fr .9fr;gap:24px;align-items:stretch;}
.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(32px,5vw,54px);align-items:start;}
.architect-card{display:grid;grid-template-columns:200px 1fr;gap:44px;align-items:start;
  background:var(--cream);border:1px solid var(--line);border-radius:22px;padding:clamp(28px,4vw,44px);}
.stat{font-size:clamp(32px,5vw,42px);font-weight:800;letter-spacing:-.03em;color:var(--navy);}
/* Pricing */
.grid-4{grid-template-columns:repeat(4,1fr);}
.plan{background:#fff;border:1px solid #E7EAEE;border-radius:22px;padding:34px 30px;box-shadow:0 24px 60px -34px rgba(13,31,53,.3);}
.plan--featured{background:var(--navy);border-color:var(--navy);color:#fff;box-shadow:0 30px 70px -30px rgba(0,158,143,.5);transform:translateY(-12px);position:relative;}
.plan .kicker{font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);}
.plan--featured .kicker{color:var(--teal-bright);}
.plan .price{font-size:40px;font-weight:800;letter-spacing:-.03em;}
.plan-cta{display:block;text-align:center;font-size:15px;font-weight:700;padding:13px;border-radius:12px;margin-bottom:24px;}
.plan-cta--soft{background:#F1F4F7;color:var(--navy);}
.plan-cta--teal{background:var(--teal);color:#fff;box-shadow:0 12px 26px -10px rgba(0,158,143,.8);}
.feat-list{display:flex;flex-direction:column;gap:11px;}
.feat-list div{font-size:14px;color:var(--slate);display:flex;gap:9px;}
.feat-list .ck{color:var(--teal);font-weight:700;}
.plan--featured .feat-list div{color:rgba(255,255,255,.82);}
.plan--featured .feat-list .ck{color:var(--teal-bright);}
.badge-pop{position:absolute;top:22px;right:24px;font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.1em;background:var(--teal);color:#fff;padding:5px 11px;border-radius:100px;}
.contact-line{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.contact-ic{width:42px;height:42px;border-radius:11px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.stack-row{display:flex;align-items:center;gap:22px;border-radius:var(--r-md);padding:20px 26px;}
.stack-row--teal{background:linear-gradient(180deg,#11B6A4,#009E8F);color:#fff;box-shadow:0 16px 34px -18px rgba(0,158,143,.8);}
.stack-row--navy{background:radial-gradient(130% 160% at 12% 0%,#0F2742,#0D1F35);color:#fff;}
.stack-label{width:152px;flex-shrink:0;}
.stack-title{font-size:18px;font-weight:800;letter-spacing:-.02em;}
.stack-desc{flex:1;font-size:14.5px;line-height:1.5;color:var(--muted);}
.stack-row--teal .stack-desc,.stack-row--navy .stack-desc{color:inherit;}
.stack-arrow{text-align:center;color:#C2CBD4;font-size:18px;line-height:1;margin:7px 0;}
.core-tag{font-size:13.5px;font-weight:600;color:#E7EEF4;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);padding:6px 13px;border-radius:100px;}
.build-row{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;padding:15px 0;border-bottom:1px solid #EFEDE7;}
.build-head{padding-bottom:10px;border-bottom:1px solid #E6E3DD;}
.bp{font-size:15px;font-weight:700;color:var(--ink);}
.bd{font-size:15px;color:var(--muted);}
.domain-card{border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;background:var(--panel);display:flex;flex-direction:column;gap:6px;}
.domain-card--live{border-color:#D9E7E3;background:linear-gradient(180deg,var(--mint-2),#fff);}
.domain-top{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.02em;}
.domain-eta{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--muted);}
.domain-sub{font-size:13.5px;color:var(--muted-2);}

/* ---------- Health page ---------- */
.auto-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:14px;}
.feature-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,4vw,46px);align-items:center;
  border:1px solid var(--line);border-radius:24px;padding:clamp(28px,5vw,44px);background:var(--cream);}
.feature-split.rev{grid-template-columns:1.1fr .9fr;}
.feature-split.rev .fs-text{grid-column:2;grid-row:1;}
.feature-split.rev .fs-cards{grid-column:1;grid-row:1;}
.subgrid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.mini{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px;}
.mini .t{font-size:15px;font-weight:700;margin-bottom:4px;}
.mini .d{font-size:13.5px;color:var(--muted-2);line-height:1.45;}
.chip-tag{font-size:14px;font-weight:600;color:var(--navy);background:var(--cream);border:1px solid var(--line);padding:9px 15px;border-radius:100px;}
.aesthetic-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(28px,4vw,44px);align-items:center;}
.kicker-sm{font-family:var(--font-mono);font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:12px;}
.step{background:var(--cream);border:1px solid var(--line);border-radius:13px;padding:20px 16px;}
.step-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--teal);line-height:1;margin-bottom:8px;}
.num-circle{width:56px;height:56px;border-radius:50%;background:var(--navy);color:#fff;font-family:var(--font-mono);
  font-weight:700;font-size:19px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
  border:4px solid #fff;box-shadow:0 0 0 1px #E7EAEE;}
.num-circle.live{background:var(--teal);}
.ipd-card{background:var(--cream);border:1px solid var(--line);border-radius:13px;padding:18px 16px;border-top:3px solid var(--teal);}
.ipd-card .role{font-family:var(--font-mono);font-size:12px;font-weight:700;margin-bottom:7px;}

/* ============================================================
   RESPONSIVE — the fix for mobile / vertical screens
   ============================================================ */
@media (max-width:960px){
  .brand-tag{display:none;}
  .nav-links{position:fixed;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-3);
    padding:8px 0 14px;transform:translateY(-140%);transition:transform .28s ease;box-shadow:0 20px 40px -20px rgba(13,31,53,.25);}
  .nav.open .nav-links{transform:translateY(0);}
  .nav-links a{padding:14px var(--pad);border-top:1px solid var(--line-3);}
  .nav-links a:first-child{border-top:0;}
  .nav-links .btn{margin:12px var(--pad) 0;justify-content:center;}
  .hamburger{display:block;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{display:none;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .engine-split{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .feature-split,.feature-split.rev{grid-template-columns:1fr;}
  .feature-split.rev .fs-text,.feature-split.rev .fs-cards{grid-column:1;grid-row:auto;}
  .aesthetic-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:640px){
  :root{--pad:20px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .plan--featured{transform:none;}
  .form-row{grid-template-columns:1fr;}
  .hero-stats .sep{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:22px;}
  .trust-inner{flex-direction:column;align-items:flex-start;gap:8px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .card{padding:24px;}
  .stack-row{flex-direction:column;align-items:flex-start;gap:10px;}
  .stack-label{width:auto;}
  .build-row .bd{font-size:14px;}
  .architect-card{grid-template-columns:1fr;gap:24px;text-align:center;}
  .subgrid{grid-template-columns:1fr;}
}