/* =========================================================
   ATNB Corp — design system
   ========================================================= */
:root{
  --bg:#05060a;
  --bg-soft:#0a0c14;
  --text:#e8eaf0;
  --muted:#9aa3b2;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.035);
  --glass-strong:rgba(255,255,255,.06);
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --emerald:#34d399;
  --grad:linear-gradient(120deg,#22d3ee 0%,#3b82f6 45%,#8b5cf6 100%);
  --radius:18px;
  --maxw:1160px;
  --font-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
  position:relative;
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.08;letter-spacing:-.02em;font-weight:600}

/* ---------- animated background ---------- */
.bg-grid{
  position:fixed;inset:0;z-index:-3;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  animation:gridfloat 30s linear infinite;
}
@keyframes gridfloat{to{background-position:54px 54px,54px 54px}}

.bg-aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;filter:blur(70px);opacity:.55}
.orb{position:absolute;border-radius:50%;mix-blend-mode:screen}
.orb-1{width:46vw;height:46vw;left:-8vw;top:-12vw;background:radial-gradient(circle,#22d3ee,transparent 65%);animation:drift1 22s ease-in-out infinite}
.orb-2{width:42vw;height:42vw;right:-10vw;top:-6vw;background:radial-gradient(circle,#8b5cf6,transparent 65%);animation:drift2 26s ease-in-out infinite}
.orb-3{width:50vw;height:50vw;left:30vw;top:40vh;background:radial-gradient(circle,#3b82f6,transparent 60%);animation:drift3 30s ease-in-out infinite}
@keyframes drift1{50%{transform:translate(8vw,10vh) scale(1.1)}}
@keyframes drift2{50%{transform:translate(-6vw,12vh) scale(1.15)}}
@keyframes drift3{50%{transform:translate(-10vw,-8vh) scale(.9)}}

.spotlight{
  position:fixed;width:600px;height:600px;border-radius:50%;z-index:-1;pointer-events:none;
  background:radial-gradient(circle,rgba(80,160,255,.10),transparent 60%);
  transform:translate(-50%,-50%);left:50%;top:30%;transition:opacity .4s;opacity:0;
}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:18px clamp(20px,5vw,48px);
  transition:background .3s,border-color .3s,padding .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(8,9,14,.7);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);padding-top:12px;padding-bottom:12px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{display:grid;place-items:center}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:.02em}
.brand-dim{color:var(--muted);font-weight:500;margin-left:2px}
.nav-links{display:flex;gap:28px;margin-left:auto;font-size:.93rem}
.nav-links a{color:var(--muted);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-cta{margin-left:8px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);font-weight:500;font-size:.95rem;
  padding:13px 24px;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .15s,box-shadow .3s,background .3s,border-color .3s;will-change:transform;
}
.btn .arrow{transition:transform .2s}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--grad);color:#06121f;box-shadow:0 8px 30px -8px rgba(59,130,246,.6)}
.btn-primary:hover{box-shadow:0 12px 40px -8px rgba(59,130,246,.85)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(255,255,255,.2)}

/* ---------- layout ---------- */
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(80px,11vw,150px) clamp(20px,5vw,48px)}
.section-head{max-width:720px;margin-bottom:56px}
.kicker{
  display:inline-block;font-family:var(--font-display);font-size:.78rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:16px;
}
.section h2{font-size:clamp(1.9rem,4.2vw,3rem);margin-bottom:18px}
.lead{color:var(--muted);font-size:clamp(1rem,1.4vw,1.18rem);max-width:62ch}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- hero ---------- */
.hero{
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(140px,18vh,210px) clamp(20px,5vw,48px) clamp(40px,7vw,80px);
  text-align:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-size:.78rem;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;
  padding:8px 16px;border:1px solid var(--line);border-radius:999px;background:var(--glass);
  backdrop-filter:blur(8px);margin-bottom:30px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--emerald);box-shadow:0 0 12px var(--emerald);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.4}}
.hero-title{font-size:clamp(2.4rem,6.5vw,5rem);font-weight:700;margin:0 auto 26px;max-width:16ch}
.hero-sub{color:var(--muted);font-size:clamp(1.02rem,1.6vw,1.25rem);max-width:62ch;margin:0 auto 38px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:clamp(56px,8vw,90px);
}
.stat{
  padding:24px 18px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(8px);text-align:left;
}
.stat-num{font-family:var(--font-display);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;line-height:1}
.stat-label{color:var(--muted);font-size:.88rem;margin-top:10px}

/* ---------- marquee ---------- */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  overflow:hidden;padding:18px 0;background:rgba(255,255,255,.015);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee-track{display:flex;gap:34px;white-space:nowrap;width:max-content;animation:scroll 36s linear infinite;font-family:var(--font-display);color:var(--muted)}
.marquee-track span{font-size:1.05rem;letter-spacing:.02em}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- cards ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  padding:32px 28px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(8px);
  transition:transform .3s,border-color .3s,background .3s;
  position:relative;overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:opacity .35s;mix-blend-mode:overlay}
.card:hover{border-color:rgba(255,255,255,.2);background:var(--glass-strong);transform:translateY(-6px)}
.card:hover::before{opacity:.06}
.card-ico{font-family:var(--font-display);font-size:1.4rem;font-weight:700;width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:var(--grad);color:#06121f;margin-bottom:20px}
.card h3{font-size:1.4rem;margin-bottom:12px}
.card p{color:var(--muted);font-size:.98rem;margin-bottom:18px}
.ticks{list-style:none;display:flex;flex-direction:column;gap:9px}
.ticks li{position:relative;padding-left:24px;font-size:.92rem;color:var(--text)}
.ticks li::before{content:"✓";position:absolute;left:0;color:var(--emerald);font-weight:700}

/* ---------- product / device ---------- */
.product{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center}
.product h2{font-size:clamp(2.2rem,4.5vw,3.4rem);margin-bottom:18px}
.feature-list{list-style:none;display:flex;flex-direction:column;gap:14px;margin:26px 0 30px}
.feature-list li{position:relative;padding-left:26px;color:var(--muted)}
.feature-list li strong{color:var(--text)}
.feature-list li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:50%;background:var(--grad)}

.device{position:relative;display:grid;place-items:center;min-height:520px}
.device-glow{position:absolute;width:340px;height:480px;background:var(--grad);filter:blur(80px);opacity:.35;border-radius:40px}
.device-frame{
  position:relative;width:300px;height:600px;border-radius:42px;
  background:linear-gradient(160deg,#14161f,#0a0b11);
  border:1px solid rgba(255,255,255,.12);padding:16px;
  box-shadow:0 40px 90px -30px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.08);
  animation:floaty 6s ease-in-out infinite;
}
@keyframes floaty{50%{transform:translateY(-14px)}}
.device-notch{width:120px;height:26px;background:#000;border-radius:0 0 16px 16px;margin:0 auto 14px}
.device-screen{height:calc(100% - 40px);border-radius:28px;background:linear-gradient(180deg,#0b0e18,#070910);padding:20px 18px;display:flex;flex-direction:column;gap:14px;overflow:hidden}
.app-top{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:600;font-size:.95rem}
.app-dot{width:9px;height:9px;border-radius:50%;background:var(--emerald);box-shadow:0 0 10px var(--emerald)}
.app-badge{margin-left:auto;font-size:.6rem;letter-spacing:.12em;padding:3px 8px;border-radius:6px;background:rgba(52,211,153,.15);color:var(--emerald);border:1px solid rgba(52,211,153,.3)}
.app-row{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--muted);padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.app-row .ok{color:var(--emerald)}
.app-row .val{color:var(--text);font-family:var(--font-display);font-weight:600}
.app-bar{height:8px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden}
.app-bar i{display:block;height:100%;width:var(--w);background:var(--grad);border-radius:99px;animation:fill 2.4s ease-in-out infinite alternate}
@keyframes fill{from{opacity:.7}to{opacity:1}}
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:2px}
.app-grid span{aspect-ratio:1;border-radius:9px;background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(139,92,246,.18));border:1px solid var(--line)}
.app-cta{margin-top:auto;text-align:center;font-family:var(--font-display);font-size:.82rem;font-weight:600;padding:13px;border-radius:14px;background:var(--grad);color:#06121f}

/* ---------- split / science ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:start}
.science-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mini-card{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--glass);transition:transform .25s,border-color .25s}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.18)}
.mini-card h4{font-size:1.05rem;margin-bottom:8px}
.mini-card p{color:var(--muted);font-size:.9rem}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:42px}
.tl-step{padding:28px 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);position:relative}
.tl-step::after{content:"";position:absolute;top:46px;right:-20px;width:20px;height:1px;background:var(--line)}
.tl-step:last-child::after{display:none}
.tl-num{font-family:var(--font-display);font-weight:700;font-size:1.3rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tl-step h4{margin:14px 0 8px;font-size:1.1rem}
.tl-step p{color:var(--muted);font-size:.9rem}

.funding-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.fund-chip{padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--glass-strong);text-align:center}
.fund-chip strong{display:block;font-family:var(--font-display);font-size:1.1rem;margin-bottom:6px}
.fund-chip span{color:var(--muted);font-size:.85rem}

/* ---------- CTA band ---------- */
.cta-band{padding:clamp(70px,9vw,120px) clamp(20px,5vw,48px)}
.cta-inner{
  max-width:760px;margin:0 auto;text-align:center;
  padding:clamp(40px,6vw,72px);border-radius:28px;
  border:1px solid var(--line);
  background:radial-gradient(ellipse at 50% 0%,rgba(59,130,246,.12),var(--glass) 60%);
  backdrop-filter:blur(10px);position:relative;overflow:hidden;
}
.cta-inner h2{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:16px}
.contact-form{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px}
.contact-form input{
  flex:1 1 200px;min-width:0;padding:14px 18px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
  font-family:var(--font-body);font-size:.95rem;transition:border-color .2s,background .2s;
}
.contact-form input::placeholder{color:var(--muted)}
.contact-form input:focus{outline:none;border-color:var(--blue);background:rgba(255,255,255,.06)}
.contact-form .btn{flex:1 1 100%;justify-content:center}
.form-note{color:var(--muted);font-size:.78rem;margin-top:16px;opacity:.7}

/* ---------- footer ---------- */
.footer{max-width:var(--maxw);margin:0 auto;padding:64px clamp(20px,5vw,48px) 48px;border-top:1px solid var(--line)}
.footer-top{display:flex;flex-direction:column;gap:8px;margin-bottom:40px}
.footer-tag{color:var(--muted)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:.88rem;border-top:1px solid var(--line);padding-top:24px}
.footer-links{display:flex;gap:22px}
.footer-links a:hover{color:var(--text)}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .nav-links{display:none}
  .cards-3,.timeline,.funding-row,.hero-stats{grid-template-columns:repeat(2,1fr)}
  .product,.split{grid-template-columns:1fr}
  .device{min-height:560px;margin-top:20px}
  .tl-step::after{display:none}
}
@media(max-width:540px){
  .hero-stats,.science-cards{grid-template-columns:1fr}
  .nav-cta{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}