/* ============ Tokens (brand: teal #0f8090, red #8c1315) ============ */
:root{
  --ink:#152a2f;          /* primary text — deep teal-charcoal */
  --ink-soft:#39525a;
  --muted:#5f7178;
  --paper:#ffffff;
  --tint:#f2f8f9;         /* light teal-tinted section bg */
  --tint-2:#e9f3f4;
  --line:#e0eaec;
  --line-soft:#eef4f5;
  --teal:#0f8090;         /* brand teal (fills, borders) */
  --teal-ink:#0a626f;     /* teal for text on white (contrast) */
  --teal-soft:#e4f2f3;
  --red:#8c1315;          /* brand red */
  --red-ink:#7a1214;
  --red-soft:#f6e9e9;
  --white:#ffffff;
  --font-display:"Space Grotesk",-apple-system,sans-serif;
  --font-body:"Inter",-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",monospace;
  --wrap:1180px;
  --r:14px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}

.skip-link{
  position:absolute;left:-999px;top:0;background:var(--teal);color:#fff;
  padding:10px 16px;z-index:100;border-radius:0 0 8px 0
}
.skip-link:focus{left:0}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
  padding:14px 26px;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .15s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-ink);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-ink);transform:translateY(-2px)}
.btn-block{width:100%}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease
}
.site-header.scrolled{box-shadow:0 6px 24px rgba(21,42,47,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center}
.logo-img{height:44px;width:auto}

.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:.94rem;font-weight:500;color:var(--muted);transition:color .2s}
.nav a:hover{color:var(--ink)}
.nav .nav-cta{
  color:var(--teal-ink);border:1px solid var(--teal);padding:8px 18px;border-radius:999px;font-weight:600
}
.nav .nav-cta:hover{background:var(--teal);color:#fff}

.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.menu-btn span{width:24px;height:2px;background:var(--ink);transition:.25s;display:block}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav{display:none;flex-direction:column;background:var(--paper);border-bottom:1px solid var(--line)}
.mobile-nav a{padding:15px 24px;border-top:1px solid var(--line);font-weight:500}
.mobile-nav.open{display:flex}

/* ============ Shared section ============ */
.eyebrow{
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal-ink);margin-bottom:16px
}
.section{padding:100px 0}
.sec-head{max-width:720px;margin-bottom:56px}
.sec-head h2{
  font-family:var(--font-display);font-weight:600;font-size:clamp(1.8rem,3.8vw,2.7rem);
  line-height:1.12;letter-spacing:-.02em;margin-bottom:18px
}
.sec-sub{font-size:1.08rem;color:var(--muted)}
.section-dark{background:var(--tint)}     /* repurposed: light teal tint */
.section-muted{background:var(--tint)}

/* ============ Hero ============ */
.hero{padding:80px 0 60px;position:relative;overflow:hidden;background:var(--paper)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(55% 55% at 88% 8%,rgba(15,128,144,.08),transparent 70%),
    radial-gradient(40% 40% at 92% 60%,rgba(140,19,21,.05),transparent 70%);
  pointer-events:none
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero h1{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(2.2rem,5.2vw,3.7rem);line-height:1.05;letter-spacing:-.03em;margin-bottom:22px
}
.lede{font-size:1.15rem;color:var(--ink-soft);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:40px;border-top:1px solid var(--line);padding-top:24px}
.hero-stats dt{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.hero-stats dd{font-family:var(--font-display);font-weight:600;font-size:1.15rem;margin-top:4px}

/* Signature stack — white cards, brand-colored bookends */
.stack{display:flex;flex-direction:column;gap:12px}
.stack-layer{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px 20px 30px;border-radius:12px;
  background:#fff;color:var(--ink);border:1px solid var(--line);
  box-shadow:0 8px 22px rgba(21,42,47,.06);
  opacity:0;animation:layerIn .6s cubic-bezier(.2,.7,.3,1) forwards;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease
}
.stack-layer::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:4px;background:var(--teal)}
.stack-layer:hover{transform:translateX(-8px);box-shadow:0 14px 34px rgba(15,128,144,.16);border-color:var(--teal)}
.stack-layer[data-layer="1"]{animation-delay:.05s;background:var(--red);border-color:var(--red);color:#fff}
.stack-layer[data-layer="1"]::before{background:rgba(255,255,255,.55)}
.stack-layer[data-layer="2"]{animation-delay:.14s}
.stack-layer[data-layer="3"]{animation-delay:.23s}
.stack-layer[data-layer="4"]{animation-delay:.32s}
.stack-layer[data-layer="5"]{animation-delay:.41s}
.stack-layer[data-layer="6"]{animation-delay:.50s;background:var(--teal);border-color:var(--teal);color:#fff}
.stack-layer[data-layer="6"]::before{background:rgba(255,255,255,.55)}
.l-idx{font-family:var(--font-mono);font-size:.8rem;color:var(--teal-ink)}
.stack-layer[data-layer="1"] .l-idx,.stack-layer[data-layer="6"] .l-idx{color:rgba(255,255,255,.85)}
.l-name{font-family:var(--font-display);font-weight:600;font-size:1.02rem}
@keyframes layerIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  .stack-layer{animation:none;opacity:1}
  html{scroll-behavior:auto}
}

/* ============ Strip ============ */
.strip{background:var(--tint-2);padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.strip-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:18px}
.strip span{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.strip i{width:5px;height:5px;border-radius:50%;background:var(--teal);display:inline-block}

/* ============ Model ============ */
.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.model-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease
}
.model-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(21,42,47,.08);border-color:var(--teal)}
.mc-num{font-family:var(--font-mono);color:var(--teal-ink);font-size:.9rem;font-weight:500}
.model-card h3{font-family:var(--font-display);font-weight:600;font-size:1.35rem;margin:14px 0 12px}
.model-card p{color:var(--muted);font-size:1rem}

/* ============ Services ============ */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.svc{background:#fff;padding:30px 26px;transition:background .25s ease}
.svc:hover{background:var(--tint)}
.svc h3{font-family:var(--font-display);font-weight:600;font-size:1.15rem;margin-bottom:10px;position:relative;padding-left:16px}
.svc h3::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--teal)}
.svc p{color:var(--muted);font-size:.95rem}

/* ============ Audiences ============ */
.aud-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.aud{
  border:1px solid var(--line);border-radius:var(--r);padding:36px 34px;background:#fff;
  transition:transform .2s ease,box-shadow .2s ease
}
.aud:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(21,42,47,.07)}
.aud-tag{
  display:inline-block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal-ink);background:var(--teal-soft);padding:6px 12px;border-radius:999px;margin-bottom:18px
}
.aud h3{font-family:var(--font-display);font-weight:600;font-size:1.45rem;margin-bottom:12px}
.aud p{color:var(--muted);margin-bottom:20px}
.link-arrow{font-family:var(--font-display);font-weight:600;color:var(--teal-ink);font-size:.95rem;display:inline-flex;align-items:center;gap:6px}
.link-arrow::after{content:"→";transition:transform .2s ease}
.link-arrow:hover::after{transform:translateX(4px)}

/* ============ About ============ */
.about-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:64px;align-items:start}
.about-copy h2{font-family:var(--font-display);font-weight:600;font-size:clamp(1.8rem,3.5vw,2.5rem);line-height:1.14;letter-spacing:-.02em;margin-bottom:20px}
.about-copy p{color:var(--muted);margin-bottom:18px;font-size:1.05rem}
.about-copy .btn{margin-top:12px}
.about-facts{list-style:none;border-top:1px solid var(--line);background:#fff;border-radius:var(--r);padding:6px 22px;border:1px solid var(--line)}
.about-facts li{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--line-soft)}
.about-facts li:last-child{border-bottom:0}
.af-k{font-family:var(--font-mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.af-v{font-family:var(--font-display);font-weight:600;text-align:right}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-copy h2{font-family:var(--font-display);font-weight:600;font-size:clamp(1.8rem,3.5vw,2.5rem);line-height:1.14;letter-spacing:-.02em;margin-bottom:18px}
.contact-lines{list-style:none;margin-top:32px}
.contact-lines li{display:flex;gap:20px;padding:14px 0;border-top:1px solid var(--line)}
.contact-lines li span:first-child{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);width:90px;flex:none}
.contact-lines a{color:var(--teal-ink);font-weight:500}
.contact-lines a:hover{text-decoration:underline}

.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px;box-shadow:0 12px 34px rgba(21,42,47,.06)}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--font-mono);font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:13px 15px;color:var(--ink);font-family:var(--font-body);font-size:1rem;transition:border-color .2s ease,box-shadow .2s ease
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(15,128,144,.12)}
.field textarea{resize:vertical}
.hp{position:absolute;left:-9999px}

/* ============ Footer ============ */
.site-footer{background:var(--tint);color:var(--ink);padding:64px 0 28px;border-top:1px solid var(--line)}
.footer-inner{display:grid;grid-template-columns:1.3fr 1.7fr;gap:48px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .logo-img{height:52px}
.footer-brand p{color:var(--muted);max-width:340px;font-size:.98rem}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.footer-nav h4{font-family:var(--font-mono);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-ink);margin-bottom:16px;font-weight:500}
.footer-nav a,.footer-nav span{display:block;color:var(--muted);font-size:.95rem;padding:5px 0;transition:color .2s}
.footer-nav a:hover{color:var(--teal-ink)}
.footer-bottom{padding-top:24px}
.footer-bottom p{color:var(--muted);font-size:.85rem}

/* ============ Responsive ============ */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .stack{max-width:460px}
  .model-grid{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-inner{grid-template-columns:1fr;gap:36px}
}
@media (max-width:720px){
  .nav{display:none}
  .menu-btn{display:flex}
  .section{padding:72px 0}
  .aud-grid{grid-template-columns:1fr}
  .hero-stats{gap:26px}
  .footer-nav{grid-template-columns:1fr 1fr}
  .logo-img{height:38px}
}
@media (max-width:460px){
  .svc-grid{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap}
  .af-v{font-size:.95rem}
}

/* ============ Animations ============ */
/* Scroll reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* Hero load-in */
.hero-copy .eyebrow{animation:fadeUp .6s .05s both}
.hero-copy h1{animation:fadeUp .7s .15s both}
.hero-copy .lede{animation:fadeUp .7s .30s both}
.hero-copy .hero-actions{animation:fadeUp .7s .44s both}
.hero-copy .hero-stats{animation:fadeUp .7s .58s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* Slow drifting hero glow */
.hero::before{animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate(0,0)}to{transform:translate(-18px,14px)}}

/* Nav underline */
.nav a:not(.nav-cta){position:relative}
.nav a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-5px;height:2px;width:0;background:var(--teal);transition:width .25s ease}
.nav a:not(.nav-cta):hover::after{width:100%}

/* Button press + sheen */
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{position:relative;overflow:hidden}
.btn-primary::after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.28),transparent);transform:skewX(-18deg)}
.btn-primary:hover::after{animation:sheen .8s ease}
@keyframes sheen{to{left:140%}}

/* Logo subtle lift on hover */
.brand .logo-img{transition:transform .25s ease}
.brand:hover .logo-img{transform:translateY(-1px) scale(1.02)}

/* Continuous soft float on the two brand bookend layers */
.stack-layer[data-layer="6"]{animation:layerIn .6s .50s forwards, floatY 6s ease-in-out 1.2s infinite}
.stack-layer[data-layer="1"]{animation:layerIn .6s .05s forwards, floatY 6s ease-in-out 1.6s infinite}
@keyframes floatY{0%,100%{translate:0 0}50%{translate:0 -5px}}

/* Card + link micro-interactions already transition; add arrow nudge on aud hover */
.aud:hover .link-arrow::after{transform:translateX(4px)}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-copy .eyebrow,.hero-copy h1,.hero-copy .lede,.hero-copy .hero-actions,.hero-copy .hero-stats{animation:none}
  .hero::before{animation:none}
  .stack-layer[data-layer="1"],.stack-layer[data-layer="6"]{animation:none;opacity:1}
  .btn-primary:hover::after{animation:none}
}

/* ============ Domain graphics ============ */
/* Service icons */
.svc-ico{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;
  border-radius:11px;background:var(--teal-soft);color:var(--teal-ink);margin-bottom:16px;
  transition:background .25s ease,color .25s ease,transform .25s ease}
.svc-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.svc:hover .svc-ico{background:var(--teal);color:#fff;transform:translateY(-2px)}
.svc h3{padding-left:0}
.svc h3::before{display:none}

/* Engineered dot-grid behind hero stack */
.hero::after{content:"";position:absolute;inset:0 0 0 auto;width:52%;z-index:0;
  background-image:radial-gradient(circle,rgba(15,128,144,.12) 1px,transparent 1.7px);
  background-size:26px 26px;
  -webkit-mask:linear-gradient(90deg,transparent,#000 45%);mask:linear-gradient(90deg,transparent,#000 45%);
  pointer-events:none}
@media (max-width:960px){.hero::after{display:none}}

/* Live-server status LEDs on the stack */
.l-idx{position:relative;padding-right:16px}
.l-idx::after{content:"";position:absolute;right:2px;top:50%;width:6px;height:6px;border-radius:50%;
  background:var(--teal);transform:translateY(-50%);animation:led 1.8s ease-in-out infinite}
.stack-layer[data-layer="1"] .l-idx::after,.stack-layer[data-layer="6"] .l-idx::after{background:rgba(255,255,255,.92)}
.stack-layer[data-layer="2"] .l-idx::after{animation-delay:.25s}
.stack-layer[data-layer="3"] .l-idx::after{animation-delay:.5s}
.stack-layer[data-layer="4"] .l-idx::after{animation-delay:.75s}
.stack-layer[data-layer="5"] .l-idx::after{animation-delay:1s}
.stack-layer[data-layer="6"] .l-idx::after{animation-delay:1.25s}
@keyframes led{0%,100%{opacity:1}50%{opacity:.28}}

/* Data-flow sweep + pulsing nodes on the pipeline band */
.strip{position:relative;overflow:hidden}
.strip::after{content:"";position:absolute;top:0;left:-25%;width:25%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(15,128,144,.14),transparent);
  animation:sweep 4.5s linear infinite;pointer-events:none}
@keyframes sweep{to{left:125%}}
.strip i{animation:pulseDot 2.4s ease-in-out infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.65)}}

/* AI chip graphic in model header */
.model-head{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;max-width:100%}
.chip{width:150px;flex:none;justify-self:end}
.chip svg{width:100%;height:auto;overflow:visible}
.chip-body{fill:#fff;stroke:var(--teal);stroke-width:2}
.chip-core{fill:var(--teal-soft);stroke:var(--teal);stroke-width:2}
.chip-label{fill:var(--teal-ink);font-family:var(--font-display);font-weight:700;font-size:15px;text-anchor:middle;dominant-baseline:middle}
.chip-pins line{stroke:var(--red);stroke-width:2.4;stroke-linecap:round}
.chip-trace path{fill:none;stroke:var(--teal);stroke-width:2;stroke-linecap:round}
.chip .dot{fill:var(--teal)}
.chip .d1{animation:travel1 2.8s ease-in-out infinite}
.chip .d2{animation:travel2 2.8s ease-in-out infinite .7s}
.chip .d3{animation:travel3 2.8s ease-in-out infinite 1.4s}
.chip .d4{animation:travel4 2.8s ease-in-out infinite 2.1s}
@keyframes travel1{0%{transform:translateY(0);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateY(14px);opacity:0}}
@keyframes travel2{0%{transform:translateX(0);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateX(-14px);opacity:0}}
@keyframes travel3{0%{transform:translateY(0);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateY(-14px);opacity:0}}
@keyframes travel4{0%{transform:translateX(0);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateX(14px);opacity:0}}
@media (max-width:720px){.model-head{grid-template-columns:1fr}.chip{display:none}}

@media (prefers-reduced-motion:reduce){
  .l-idx::after{animation:none}
  .strip::after{animation:none;display:none}
  .strip i{animation:none}
  .chip .dot{animation:none;opacity:0}
}