/* SMART Engineering Productivity Platform — marketing site
   Layout: a single dark page, one wide column (max 1180px), sections stacked
   with generous vertical rhythm; the hero is a canvas infinity loop with the
   headline over it; screenshots sit in glass frames.
   Design is single-theme by choice (dark "Infinity Flow"), colours all tokens. */
:root{
  color-scheme:dark;
  --bg:#05070F;          /* deep navy-black ground */
  --bg2:#0A0E1C;         /* raised ground */
  --bg3:#101630;         /* card ground */
  --ink:#EEF2FF;         /* primary text */
  --dim:#A3ACCB;         /* secondary text */
  --faint:#636C8F;       /* captions */
  --line:rgba(140,160,255,.14);
  --line2:rgba(140,160,255,.28);
  --brand:#1000F8;       /* wordmark blue, kept exact */
  --blue:#2F6BFF;        /* primary action */
  --cyan:#46AAFF;        /* brushstroke infinity */
  --glow:#5CE1FF;        /* highlights */
  --violet:#7C5CFF;      /* second loop */
  --ok:#3FD08F;
  --warn:#F0B64A;
  --glass:rgba(16,22,48,.55);
  --font-display:'Archivo',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-body:'Archivo',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-mono:'Space Mono',ui-monospace,'SF Mono',Menlo,monospace;
  --max:1180px;
  --gutter:clamp(16px,4vw,48px);
  --r:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--font-display);font-variation-settings:'wdth' 112;letter-spacing:-.02em;line-height:1.05;margin:0;text-wrap:balance}
h1{font-weight:800;font-size:clamp(2.3rem,5.2vw,4.4rem)}
h2{font-weight:800;font-size:clamp(1.9rem,4.2vw,3.1rem)}
h3{font-weight:700;font-size:1.25rem;font-variation-settings:'wdth' 105}
p{margin:0}
.lede{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--dim);max-width:62ch}
.eyebrow{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--glow);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));border-radius:2px}
.wrap{width:min(var(--max),100% - 2*var(--gutter));margin-inline:auto}
.section{padding-block:clamp(64px,9vw,128px);position:relative}
.section-head{display:grid;gap:18px;max-width:760px;margin-bottom:clamp(32px,5vw,56px)}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;font-weight:700;font-size:.98rem;text-decoration:none;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;font-family:var(--font-body);white-space:nowrap}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--glow);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;box-shadow:0 10px 40px rgba(47,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 50px rgba(47,107,255,.5)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line2);color:var(--ink)}
.btn-ghost:hover{background:rgba(255,255,255,.09)}
.btn svg{width:18px;height:18px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(5,7,15,.55);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.nav.is-stuck{border-color:var(--line);background:rgba(5,7,15,.82)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand img{width:54px;height:auto}
.brand-name{display:flex;flex-direction:column;line-height:1.05}
.brand-name b{font-family:var(--font-display);font-weight:800;font-variation-settings:'wdth' 118;letter-spacing:.06em;font-size:1.05rem}
.brand-name span{font-size:.72rem;color:var(--dim);letter-spacing:.02em}
.nav-links{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.nav-links a{text-decoration:none;color:var(--dim);font-size:.95rem;font-weight:600;transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-toggle{display:none;background:none;border:1px solid var(--line2);color:var(--ink);border-radius:10px;width:44px;height:40px;cursor:pointer}
@media (max-width:480px){.brand-name span{display:none}.brand img{width:44px}}
@media (max-width:960px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;background:rgba(5,7,15,.96);border-bottom:1px solid var(--line);padding:8px var(--gutter) 16px}
  .nav-links.open{display:flex}
  .nav-links a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-cta .btn-ghost{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(48px,8vw,110px) clamp(32px,5vw,72px)}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-bg canvas{width:100%;height:100%;display:block}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 20%,transparent 75%);opacity:.5}
.hero-aurora{position:absolute;inset:-20%;background:
  radial-gradient(40% 35% at 20% 30%,rgba(47,107,255,.35),transparent 60%),
  radial-gradient(35% 35% at 80% 35%,rgba(124,92,255,.32),transparent 60%),
  radial-gradient(30% 30% at 55% 80%,rgba(70,170,255,.18),transparent 60%);
  filter:blur(40px);animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate3d(-2%,0,0) scale(1)}to{transform:translate3d(2%,-3%,0) scale(1.06)}}
@media (prefers-reduced-motion:reduce){.hero-aurora{animation:none}}
.hero-in{position:relative;z-index:1;display:grid;gap:28px;text-align:center;justify-items:center}
.hero .lede{margin-inline:auto;max-width:720px;text-align:center}
.hero h1{max-width:22ch}
.hero h1 .grad{background:linear-gradient(90deg,var(--glow),var(--cyan) 40%,var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero-lockup{width:min(420px,70vw);filter:drop-shadow(0 0 40px rgba(70,170,255,.35))}
.hero-loop{position:relative;width:100%;max-width:980px;aspect-ratio:980/420;max-height:420px}
.hero-loop canvas{position:absolute;inset:0;width:100%;height:100%}
.loop-label{position:absolute;top:50%;transform:translateY(-50%);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);display:grid;gap:6px;text-align:center}
.loop-label b{font-family:var(--font-display);font-size:1rem;letter-spacing:0;text-transform:none;color:var(--ink);font-weight:700}
.loop-label.left{left:4%}.loop-label.right{right:4%}
@media (max-width:640px){.loop-label{display:none}}
.hero-shot{position:relative;z-index:1;margin-top:clamp(28px,4vw,56px)}
.frame{border-radius:var(--r);border:1px solid var(--line2);background:var(--glass);padding:10px;box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 0 1px rgba(92,225,255,.06) inset;position:relative}
.frame::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(92,225,255,.5),transparent 40%,transparent 60%,rgba(124,92,255,.5));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.frame img{border-radius:calc(var(--r) - 8px)}
.frame-bar{display:flex;gap:6px;padding:4px 6px 10px}
.frame-bar i{width:10px;height:10px;border-radius:50%;background:var(--line2)}
.frame-bar i:first-child{background:var(--cyan)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:clamp(40px,6vw,72px)}
.stat{background:var(--bg2);padding:26px 24px;display:grid;gap:6px}
.stat b{font-family:var(--font-display);font-size:2rem;font-weight:800;font-variation-settings:'wdth' 110;letter-spacing:-.02em;background:linear-gradient(90deg,var(--glow),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stat span{color:var(--dim);font-size:.92rem}
@media (max-width:860px){.stats{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.stats{grid-template-columns:1fr}}

/* ---------- flow steps ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.flow::before{content:"";position:absolute;left:8%;right:8%;top:46px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--violet),var(--cyan));opacity:.5}
.step{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:28px 26px;display:grid;gap:14px;position:relative;transition:border-color .3s,transform .3s}
.step:hover{border-color:var(--line2);transform:translateY(-3px)}
.step-n{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;font-family:var(--font-mono);font-weight:700;font-size:.9rem;box-shadow:0 8px 24px rgba(47,107,255,.35)}
.step p{color:var(--dim);font-size:.98rem}
.step ul{margin:0;padding-left:18px;color:var(--dim);font-size:.95rem;display:grid;gap:6px}
.step ul li::marker{color:var(--cyan)}
@media (max-width:860px){.flow{grid-template-columns:1fr}.flow::before{display:none}}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.split.rev{grid-template-columns:.95fr 1.05fr}
.split.rev .split-text{order:2}
.split-text{display:grid;gap:18px}
.split-text .lede{font-size:1.05rem}
@media (max-width:900px){.split,.split.rev{grid-template-columns:1fr}.split.rev .split-text{order:0}}

/* ---------- proof cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;display:grid;gap:12px;align-content:start;transition:border-color .3s,background .3s}
.card:hover{border-color:var(--line2);background:linear-gradient(180deg,rgba(92,225,255,.06),rgba(124,92,255,.04))}
.card-ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(92,225,255,.08);border:1px solid var(--line2);color:var(--glow)}
.card-ic svg{width:22px;height:22px}
.card p{color:var(--dim);font-size:.96rem}
.card .fine{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
@media (max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}

/* ---------- gallery tabs ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.tab{background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--dim);border-radius:999px;padding:10px 18px;font-weight:600;font-size:.92rem;cursor:pointer;font-family:var(--font-body);transition:all .2s}
.tab[aria-selected="true"]{background:linear-gradient(135deg,rgba(47,107,255,.35),rgba(124,92,255,.35));border-color:var(--line2);color:var(--ink)}
.panel{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.panel[hidden]{display:none}
.panel-note{display:grid;gap:12px;padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2)}
.panel-note p{color:var(--dim);font-size:.95rem}
.panel-note ul{margin:0;padding-left:18px;color:var(--dim);font-size:.93rem;display:grid;gap:6px}
.panel-note ul li::marker{color:var(--violet)}
@media (max-width:900px){.panel{grid-template-columns:1fr}}

/* ---------- automotive ---------- */
.auto{background:
  radial-gradient(60% 50% at 10% 0%,rgba(47,107,255,.18),transparent 60%),
  radial-gradient(50% 40% at 90% 100%,rgba(124,92,255,.18),transparent 60%),var(--bg2);
  border-block:1px solid var(--line)}
.badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;padding:6px 12px;border-radius:999px;border:1px solid var(--line2);color:var(--glow);background:rgba(92,225,255,.06)}
.badge.ok{color:var(--ok);border-color:rgba(63,208,143,.4);background:rgba(63,208,143,.08)}
.badge.ok::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
.auto-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.auto-item{border:1px solid var(--line);border-radius:14px;padding:20px;background:rgba(5,7,15,.5);display:grid;gap:8px;align-content:start}
.auto-item b{font-family:var(--font-display);font-size:1.02rem;font-variation-settings:'wdth' 105}
.auto-item p{color:var(--dim);font-size:.9rem}
.auto-item .std{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan)}
@media (max-width:1000px){.auto-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.auto-grid{grid-template-columns:1fr}}

/* ---------- industries ---------- */
.ind{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ind-item{border:1px solid var(--line);border-radius:var(--r);padding:24px;display:grid;gap:10px;align-content:start;background:var(--bg2);position:relative;overflow:hidden}
.ind-item::after{content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;border-radius:50%;background:radial-gradient(circle,rgba(92,225,255,.14),transparent 70%);pointer-events:none}
.ind-item.now{border-color:rgba(63,208,143,.4)}
.ind-item h3{font-size:1.1rem}
.ind-item p{color:var(--dim);font-size:.93rem}
.ind-row{display:grid;grid-template-columns:auto 1fr;gap:8px 10px;font-size:.88rem;color:var(--dim);margin-top:4px}
.ind-row span:nth-child(odd){font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);padding-top:3px}
@media (max-width:900px){.ind{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.ind{grid-template-columns:1fr}}

/* ---------- licensing ---------- */
.lic{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.pool{border:1px solid var(--line2);border-radius:var(--r);padding:26px;background:var(--glass);display:grid;gap:16px}
.pool-head{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.shards{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}
.shards i{aspect-ratio:1;border-radius:4px;background:rgba(140,160,255,.12);border:1px solid var(--line);transition:background .4s,box-shadow .4s}
.shards i.on{background:linear-gradient(135deg,var(--cyan),var(--violet));border-color:transparent;box-shadow:0 0 12px rgba(92,225,255,.4)}
.pool-rows{display:grid;gap:8px;font-size:.92rem}
.pool-row{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.pool-row span:last-child{font-family:var(--font-mono);color:var(--glow);font-variant-numeric:tabular-nums}
.lic ul{margin:0;padding-left:18px;color:var(--dim);display:grid;gap:8px}
.lic ul li::marker{color:var(--cyan)}
@media (max-width:900px){.lic{grid-template-columns:1fr}}

/* ---------- demo ---------- */
.demo{background:radial-gradient(70% 60% at 50% 100%,rgba(47,107,255,.25),transparent 70%),var(--bg)}
.demo-in{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:start}
.form{display:grid;gap:14px;border:1px solid var(--line2);border-radius:var(--r);padding:26px;background:var(--glass)}
.field{display:grid;gap:6px}
.field label{font-size:.85rem;color:var(--dim);font-weight:600}
.field input,.field textarea{width:100%;background:rgba(5,7,15,.6);border:1px solid var(--line2);border-radius:10px;color:var(--ink);padding:12px 14px;font:inherit;font-size:.95rem}
.field textarea{min-height:110px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.form-note{font-size:.85rem;color:var(--faint)}
.contact-line{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-family:var(--font-mono);font-size:.92rem;color:var(--glow)}
.copy-btn{background:none;border:1px solid var(--line2);color:var(--dim);border-radius:8px;padding:6px 10px;font-size:.8rem;cursor:pointer;font-family:var(--font-body)}
.demo-text{display:grid;gap:18px}
.demo-text ul{margin:0;padding-left:18px;color:var(--dim);display:grid;gap:8px}
.demo-text ul li::marker{color:var(--violet)}
@media (max-width:900px){.demo-in{grid-template-columns:1fr}.row2{grid-template-columns:1fr}}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding-block:36px;color:var(--faint);font-size:.88rem}
.footer-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.footer a{color:var(--dim);text-decoration:none}
.footer a:hover{color:var(--ink)}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}

/* ---------- reveal (visible at rest, nudges in on scroll) ---------- */
.reveal{transition:transform .7s cubic-bezier(.2,.7,.2,1),opacity .7s;transform:translateY(0);opacity:1}
.js .reveal:not(.in){transform:translateY(18px);opacity:.92}
@media (prefers-reduced-motion:reduce){.js .reveal:not(.in){transform:none;opacity:1}}