/* ADX Systems - design system
   Static CSS. No external requests, no webfont CDN. */

:root{
  --ink:#0A1421;
  --ink-2:#0F1D31;
  --ink-3:#152743;
  --navy:#16294A;
  --blue:#3E6DB5;
  --blue-br:#5F9BE8;
  --purple:#8E3F9E;
  --purple-br:#C77BD6;
  --ice:#D2E1F3;
  --ice-dim:#8FA6C4;
  --muted:#7B90AE;
  --amber:#E39A2E;
  --line:rgba(140,175,225,.16);
  --line-str:rgba(140,175,225,.30);
  --white:#fff;
  --maxw:1320px;
  --pad:clamp(1.25rem,4vw,3rem);
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ink);color:var(--ice);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
/* height:auto is essential: the img tags carry width/height attributes, and
   without this the width scales while the height stays locked, stretching them. */
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--blue-br);text-decoration:none}
a:hover{color:var(--ice)}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.section{padding:clamp(4rem,9vw,7.5rem) 0;position:relative}
.section--tint{background:linear-gradient(180deg,transparent,var(--ink-2) 18%,var(--ink-2) 82%,transparent)}

/* ---------- type ---------- */
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.1;letter-spacing:-.02em;color:var(--white);font-weight:700}
h1{font-size:clamp(2.3rem,4.7vw,3.9rem)}
h2{font-size:clamp(1.95rem,3.9vw,3rem)}
h3{font-size:clamp(1.15rem,1.9vw,1.45rem);letter-spacing:-.01em}
p{margin:0 0 1.1em}
.lede{font-size:clamp(1.06rem,1.65vw,1.3rem);color:var(--ice);max-width:62ch}
.muted{color:var(--muted)}
.small{font-size:.87rem}
.kicker{
  font-size:.76rem;font-weight:700;letter-spacing:.19em;text-transform:uppercase;
  color:var(--blue-br);margin:0 0 1rem;display:flex;align-items:center;gap:.7rem;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--blue);display:inline-block}
.mono{font-family:var(--mono);font-size:.8rem;letter-spacing:.06em}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:80;
  background:rgba(10,20,33,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s;
}
.nav.is-stuck{border-bottom-color:var(--line);background:rgba(10,20,33,.94)}
.nav__in{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  max-width:var(--maxw);margin:0 auto;padding:.85rem var(--pad)}
.nav__logo{display:flex;align-items:center}
.nav__logo img{height:34px;width:auto}
.nav__links{display:flex;align-items:center;gap:clamp(1rem,2.4vw,2.1rem);list-style:none;margin:0;padding:0}
.nav__links a{color:var(--ice-dim);font-size:.93rem;font-weight:500;letter-spacing:.01em;
  display:inline-flex;align-items:center;min-height:44px}
.nav__links a:hover,.nav__links a[aria-current="page"]{color:var(--white)}
/* min 44px: this is the only navigation control on mobile, so it gets a full
   touch target rather than the size the glyph happens to need. */
.nav__toggle{display:none;background:none;border:1px solid var(--line-str);border-radius:6px;
  color:var(--ice);padding:.45rem .7rem;cursor:pointer;min-height:44px;min-width:44px;
  align-items:center;justify-content:center;font-size:1.05rem;line-height:1}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.8rem 1.5rem;border-radius:7px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:.22s;
}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 6px 26px -8px rgba(62,109,181,.9)}
.btn--primary:hover{background:#4d80cc;color:#fff;transform:translateY(-1px)}
.btn--ghost{border-color:var(--line-str);color:var(--ice)}
.btn--ghost:hover{border-color:var(--blue-br);color:#fff;background:rgba(62,109,181,.10)}
.btn-row{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:2rem}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;
  padding-top:5rem;padding-bottom:3.5rem;overflow:hidden}
.hero__glow{position:absolute;width:min(1100px,120vw);aspect-ratio:1;right:-18%;top:-24%;
  background:radial-gradient(circle,rgba(62,109,181,.30),rgba(142,63,158,.14) 42%,transparent 66%);
  pointer-events:none;filter:blur(8px)}
.hero__grid{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:78px 78px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000,transparent 78%)}
.hero__in{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center;width:100%}
.hero h1{margin-bottom:.35em}
.hero h1 .grad{background:linear-gradient(100deg,var(--blue-br),var(--purple-br));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{font-size:clamp(1rem,1.45vw,1.18rem);color:var(--ice);max-width:40ch;margin-bottom:1.3rem}
.hero__tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.4rem}
.tag{font-size:.76rem;letter-spacing:.03em;padding:.34rem .74rem;border-radius:100px;
  border:1px solid var(--line-str);color:var(--ice-dim);background:rgba(22,41,74,.5)}
.hero .btn-row{margin-top:1.5rem}
.hero__art{position:relative;display:flex;justify-content:center}
.hero__art img{width:auto;max-height:min(60vh,540px);object-fit:contain;
  filter:drop-shadow(0 40px 70px rgba(0,0,0,.6))}
.scrollcue{position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);
  font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.scrollcue span{display:block;width:1px;height:34px;margin:.6rem auto 0;
  background:linear-gradient(var(--blue-br),transparent);animation:cue 2.1s ease-in-out infinite}
@keyframes cue{0%,100%{opacity:.25;transform:scaleY(.55)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- stat band ---------- */
.stats{border-block:1px solid var(--line);background:var(--ink-2)}
.stats__in{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:2.2rem 1.4rem;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat__n{font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:700;line-height:1;
  color:var(--blue-br);letter-spacing:-.03em}
.stat:nth-child(2) .stat__n{color:var(--purple-br)}
.stat__l{font-size:.83rem;color:var(--muted);margin-top:.6rem;line-height:1.45}

/* ---------- generic cards ---------- */
.grid{display:grid;gap:1.4rem}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:linear-gradient(160deg,rgba(22,41,74,.62),rgba(15,29,49,.62));
  border:1px solid var(--line);border-radius:12px;padding:1.7rem 1.6rem;
  transition:border-color .25s,transform .25s;
}
.card:hover{border-color:var(--line-str);transform:translateY(-2px)}
.card h3{margin-bottom:.5rem}
.card p{margin:0;color:var(--muted);font-size:.96rem}
.card--hero{border-color:rgba(95,155,232,.5);background:linear-gradient(160deg,rgba(30,58,102,.7),rgba(15,29,49,.7))}
.card__n{font-family:var(--mono);font-size:.76rem;color:var(--blue-br);letter-spacing:.13em;margin-bottom:.7rem}

/* two-column feature block */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split--rev .split__art{order:-1}
.split__art img{border-radius:12px;border:1px solid var(--line)}
.figcap{font-size:.8rem;color:var(--muted);margin-top:.7rem;font-style:italic}
/* screen captures: inset in a dark frame so a light app UI does not fight the page */
.screenshot{background:var(--ink-3);border:1px solid var(--line-str);border-radius:12px;
  padding:.5rem;box-shadow:0 24px 60px -28px rgba(0,0,0,.85)}
.screenshot img{border-radius:7px;border:0;margin:0}

/* list with markers */
.ticks{list-style:none;margin:1.4rem 0 0;padding:0}
.ticks li{position:relative;padding-left:1.6rem;margin-bottom:1rem;color:var(--muted);font-size:.98rem}
.ticks li strong{color:var(--white);font-weight:600}
.ticks li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--blue-br)}
.ticks--purple li::before{background:var(--purple-br)}
.ticks--amber li::before{background:var(--amber)}

/* ---------- corridor diagram ---------- */
.corridor{width:100%;height:auto}
/* wide diagrams stay legible on narrow screens by scrolling horizontally */
.dscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.dscroll > svg{min-width:760px}
.dscroll__hint{display:none;font-size:.78rem;color:var(--muted);font-style:italic;margin-top:.5rem}
@media (max-width:820px){.dscroll__hint{display:block}}
.js .corridor .band{opacity:0;transform:translateY(10px);transition:opacity .7s,transform .7s}
.js .corridor .mk{opacity:0;transition:opacity .5s}
.js .corridor .cnt{opacity:0;transform:translateY(6px);transition:opacity .6s,transform .6s}
.is-in .corridor .band,.is-in .corridor .mk,.is-in .corridor .cnt{opacity:1;transform:none}
.is-in .corridor .band:nth-of-type(2){transition-delay:.12s}
.is-in .corridor .band:nth-of-type(3){transition-delay:.24s}

/* ---------- spec table ---------- */
.spec{width:100%;border-collapse:collapse;font-size:.95rem}
.spec caption,.spec-h{text-align:left;font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--blue-br);font-weight:700;padding-bottom:.9rem;margin:0}
.spec th,.spec td{text-align:left;padding:.78rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{color:var(--white);font-weight:600;width:44%}
.spec td{color:var(--muted)}
.spec tr:nth-child(odd){background:rgba(22,41,74,.28)}

/* ---------- quote / callout ---------- */
.callout{border:1px solid rgba(95,155,232,.42);background:rgba(30,58,102,.34);
  border-radius:12px;padding:1.5rem 1.7rem;font-size:1.04rem}
.callout strong{color:var(--white)}
.callout--amber{border-color:rgba(227,154,46,.42);background:rgba(227,154,46,.08)}

/* ---------- placeholder frame ---------- */
.ph{border:1.5px dashed rgba(227,154,46,.6);background:rgba(227,154,46,.05);border-radius:10px;
  min-height:190px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:1.2rem;gap:.35rem}
.ph__t{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);font-weight:700}
.ph__d{font-size:.85rem;color:var(--muted);font-style:italic;max-width:30ch}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;border-top:1px solid var(--line);background:var(--ink-2)}
.cta__glow{position:absolute;width:900px;aspect-ratio:1;left:50%;top:40%;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(62,109,181,.22),transparent 62%);pointer-events:none}
.cta .wrap{position:relative;text-align:center}
.cta h2{max-width:20ch;margin-inline:auto}

/* ---------- contact ---------- */
/* No web form by design: enquiries go straight to email. Nothing to host,
   nothing to store, no third-party form endpoint. */
.mail{margin:1.8rem 0 0}
.mail__a{display:inline-block;font-size:clamp(1.35rem,3vw,1.9rem);font-weight:700;
  letter-spacing:-.01em;color:var(--blue-br);text-decoration:none;
  border-bottom:2px solid rgba(95,155,232,.35);padding-bottom:.15rem;
  transition:color .18s ease,border-color .18s ease}
.mail__a:hover{color:var(--ice);border-color:var(--purple-br)}
/* Email and postal address are the only contact channels by design. There is no
   published telephone number and no regional offices - do not add placeholders
   implying otherwise. */
.addr{font-style:normal;margin:1.8rem 0 0;color:var(--ice-dim);font-size:.95rem;line-height:1.7}

/* Screen-reader-only. Used to give a section a heading for assistive tech and
   document outline where the visual design does not call for one. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:3rem 0 2.2rem;font-size:.9rem;color:var(--muted)}
.foot__in{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem}
.foot h4{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ice-dim);margin-bottom:.9rem}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin-bottom:.15rem}
.foot a{color:var(--muted);display:inline-flex;align-items:center;min-height:40px}
.foot li.small{min-height:auto;margin-bottom:.5rem}
.foot a:hover{color:var(--white)}
.foot__bar{margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;font-size:.82rem}
.foot__logo{height:30px;width:auto;margin-bottom:1rem;opacity:.9}

/* ---------- page header ---------- */
.phead{padding:9rem 0 3.5rem;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.phead__glow{position:absolute;width:820px;aspect-ratio:1;right:-10%;top:-52%;
  background:radial-gradient(circle,rgba(62,109,181,.20),transparent 62%);pointer-events:none}
.phead .wrap{position:relative}

/* ---------- reveal ----------
   Hidden state only applies when JS is running (html.js), so the page is
   fully readable if the script fails to load. */
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.2,.7,.3,1),transform .75s cubic-bezier(.2,.7,.3,1)}
.js .rv.is-in{opacity:1;transform:none}
.rv-d1{transition-delay:.09s}.rv-d2{transition-delay:.18s}.rv-d3{transition-delay:.27s}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .hero__in{grid-template-columns:1fr;gap:2rem;text-align:left}
  .hero__art{max-width:440px}
  .stats__in{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .g-3,.g-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:2rem}
  .split--rev .split__art{order:0}
  .foot__in{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  body{font-size:16px}
  .nav__links{
    display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    align-items:flex-start;gap:0;background:var(--ink-2);border-bottom:1px solid var(--line);padding:.5rem var(--pad) 1rem}
  .nav__links.is-open{display:flex}
  .nav__links li{width:100%;padding:.6rem 0;border-bottom:1px solid var(--line)}
  .nav__toggle{display:inline-flex}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .foot__in{grid-template-columns:1fr}
  .phead{padding:7rem 0 2.5rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  .corridor .band,.corridor .mk,.corridor .cnt{opacity:1;transform:none}
}