/* ==========================================================================
   CAT8k·SYNC — landing site
   Dark control-room aesthetic · navy base / phosphor accents
   ========================================================================== */

:root{
  --bg:#070d1a;
  --bg-2:#0a1220;
  --panel:#0e1830;
  --panel-2:#111d38;
  --line:rgba(148,197,255,.14);
  --line-strong:rgba(148,197,255,.28);
  --text:#e6edf7;
  --muted:#8ba3c7;
  --dim:#5c7296;
  --green:#34d399;
  --green-2:#10b981;
  --cyan:#38bdf8;
  --amber:#fbbf24;
  --red:#f87171;
  --cream:#f4f7fb;
  --font-display:'Chakra Petch',sans-serif;
  --font-body:'IBM Plex Sans',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
  --maxw:1160px;
  --radius:14px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(52,211,153,.25);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(7,13,26,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
.nav.scrolled{border-bottom:1px solid var(--line);background:rgba(7,13,26,.9)}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:14px 24px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:40px;height:40px;object-fit:contain;filter:drop-shadow(0 0 10px rgba(52,211,153,.35))}
.brand-name{
  font-family:var(--font-display);font-weight:700;font-size:19px;letter-spacing:.04em;
}
.brand-dot{color:var(--green)}
.nav-links{display:flex;gap:26px}
.nav-links a{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--muted);
  position:relative;transition:color .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;
  background:var(--green);transition:width .25s;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);font-weight:600;font-size:13px;letter-spacing:.08em;
  padding:12px 22px;border-radius:9px;transition:transform .18s, box-shadow .18s, background .18s;
  border:1px solid transparent;white-space:nowrap;
}
.btn svg{flex:none}
.btn-primary{
  background:linear-gradient(135deg,var(--green-2),#0d9488);
  color:#04211b;box-shadow:0 8px 24px rgba(16,185,129,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(16,185,129,.5)}
.btn-ghost{
  border-color:var(--line-strong);color:var(--text);background:rgba(148,197,255,.05);
}
.btn-ghost:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.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:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 35%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 35%,#000 30%,transparent 75%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.hero-glow-a{width:520px;height:520px;background:rgba(16,185,129,.28);top:-160px;right:8%}
.hero-glow-b{width:460px;height:460px;background:rgba(56,189,248,.16);bottom:-140px;left:-120px}
.hero-scan{
  position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--green),transparent);
  animation:scan 9s linear infinite;opacity:.5;
}
@keyframes scan{0%{top:-2%}100%{top:102%}}

.hero-inner{
  max-width:var(--maxw);margin:0 auto;width:100%;
  padding:120px 24px 40px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--green);
  border:1px solid rgba(52,211,153,.35);background:rgba(52,211,153,.07);
  padding:7px 14px;border-radius:999px;margin-bottom:24px;
}
.tag-pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.55)}70%{box-shadow:0 0 0 10px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}

.hero-title{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(38px,5.2vw,66px);line-height:1.04;letter-spacing:-.01em;
}
.grad-word{
  background:linear-gradient(100deg,#34d399 0%,#38bdf8 70%,#fbbf24 120%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin:22px 0 30px;max-width:52ch;color:var(--muted);font-size:16.5px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* hero stage (feed + screenshot) */
.hero-stage{position:relative;min-width:0}
.feed{
  position:absolute;top:-64px;right:-6px;z-index:3;width:290px;
  background:rgba(7,13,26,.9);border:1px solid var(--line-strong);border-radius:10px;
  box-shadow:0 20px 50px rgba(0,0,0,.5);backdrop-filter:blur(6px);overflow:hidden;
  font-family:var(--font-mono);font-size:11px;
}
.feed-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:7px 12px;background:rgba(148,197,255,.06);border-bottom:1px solid var(--line);
}
.feed-title{color:var(--dim);letter-spacing:.1em}
.feed-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);animation:pulse 1.4s infinite}
.feed-body{padding:10px 12px;min-height:150px;color:var(--green);white-space:pre-wrap;line-height:1.7}
.feed-cursor{display:inline-block;width:7px;height:12px;background:var(--green);vertical-align:-2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

.hero-shot{
  border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;
  background:var(--panel);box-shadow:0 30px 80px rgba(0,0,0,.6), 0 0 0 1px rgba(148,197,255,.05);
  transform:perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition:transform .4s ease;
}
.hero-shot:hover{transform:perspective(1200px) rotateY(0) rotateX(0)}
.shot-chrome{
  display:flex;align-items:center;gap:8px;padding:10px 14px;
  background:rgba(148,197,255,.06);border-bottom:1px solid var(--line);
}
.chrome-btn{width:11px;height:11px;border-radius:50%}
.chrome-red{background:#ff5f57}
.chrome-yellow{background:#febc2e}
.chrome-green{background:#28c840}
.chrome-url{
  margin-left:8px;font-family:var(--font-mono);font-size:11px;color:var(--dim);
  background:rgba(0,0,0,.25);padding:3px 10px;border-radius:6px;letter-spacing:.04em;
}
.hero-shot img{width:100%;height:auto;border-top:1px solid var(--line)}

/* hero metrics strip */
.hero-metrics{
  display:grid;grid-template-columns:repeat(6,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:rgba(10,18,32,.7);backdrop-filter:blur(6px);
}
.metric{
  padding:22px 20px;text-align:center;border-right:1px solid var(--line);
}
.metric:last-child{border-right:0}
.m-num{
  display:block;font-family:var(--font-display);font-weight:700;font-size:34px;line-height:1;
  background:linear-gradient(180deg,#fff,var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.m-lab{display:block;margin-top:7px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--dim);text-transform:uppercase}

/* ---------- ticker ---------- */
.ticker{
  overflow:hidden;border-bottom:1px solid var(--line);
  background:var(--bg-2);padding:16px 0;
}
.ticker-track{
  display:flex;gap:28px;align-items:center;width:max-content;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.2em;color:var(--muted);
  animation:ticker 38s linear infinite;
}
.ticker-track i{color:var(--green);font-style:normal;font-size:9px}
@keyframes ticker{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.section{
  max-width:var(--maxw);margin:0 auto;padding:110px 24px;
}
.section-dark{
  max-width:none;background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.section-dark > .section-head,.section-dark > .gallery,.section-dark > .gallery-hint,
.section-dark > .arch-cols{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.section-head{max-width:640px;margin-bottom:56px}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.3em;color:var(--green);display:block;margin-bottom:16px;
}
.section-head h2{
  font-family:var(--font-display);font-weight:600;font-size:clamp(30px,4vw,46px);line-height:1.1;letter-spacing:-.01em;
}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;max-width:56ch}

/* ---------- feature cards ---------- */
.grid-cards{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;overflow:hidden;
  transition:transform .25s, border-color .25s, box-shadow .25s;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:2px;
  background:linear-gradient(90deg,var(--green),transparent 70%);opacity:0;transition:opacity .25s;
}
.card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.card:hover::before{opacity:1}
.card-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;font-size:20px;color:var(--green);
  background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.25);margin-bottom:18px;
}
.card h3{font-family:var(--font-display);font-weight:600;font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
.card-tag{
  display:inline-block;margin-top:18px;font-family:var(--font-mono);font-size:10.5px;
  letter-spacing:.14em;color:var(--cyan);background:rgba(56,189,248,.08);
  border:1px solid rgba(56,189,248,.2);padding:5px 10px;border-radius:6px;
}

/* ---------- gallery ---------- */
.gallery{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.g-item{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;cursor:zoom-in;
  background:var(--panel);transition:transform .25s, border-color .25s, box-shadow .25s;
  position:relative;
}
.g-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.g-item img{aspect-ratio:1480/940;object-fit:cover;width:100%;height:auto;filter:saturate(.85) brightness(.92);transition:filter .3s}
.g-item:hover img{filter:saturate(1) brightness(1)}
.g-item figcaption{
  position:absolute;left:12px;bottom:12px;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.22em;color:#fff;background:rgba(7,13,26,.78);padding:6px 12px;border-radius:6px;
  border:1px solid var(--line-strong);backdrop-filter:blur(4px);
}
.gallery-hint{
  text-align:center;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--dim);margin-top:34px;
}

/* ---------- analytics ---------- */
.analytics-cols{
  display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;
}
.analytics-visual{
  border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;background:var(--panel);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.analytics-visual img{width:100%;height:auto}
.analytics-list{display:flex;flex-direction:column;gap:18px}
.analytics-list li{
  display:flex;gap:16px;align-items:flex-start;color:var(--muted);font-size:15px;
  border-left:1px solid var(--line);padding-left:18px;
}
.li-num{
  font-family:var(--font-mono);font-size:12px;color:var(--green);letter-spacing:.1em;padding-top:3px;flex:none;
}

/* ---------- architecture ---------- */
.arch-cols{
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.arch-visual{border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;background:var(--panel);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.arch-visual img{width:100%;height:auto}
.arch-list{display:flex;flex-direction:column;gap:26px}
.arch-item{display:flex;gap:18px;align-items:flex-start}
.arch-ico{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:9px;font-size:15px;color:var(--amber);
  background:rgba(251,191,36,.1);border:1px solid rgba(251,191,36,.25);
}
.arch-item h3{font-family:var(--font-display);font-weight:600;font-size:17px;margin-bottom:5px}
.arch-item p{color:var(--muted);font-size:14.5px}
.arch-item code{
  font-family:var(--font-mono);font-size:12px;color:var(--green);background:rgba(52,211,153,.08);
  padding:2px 6px;border-radius:5px;
}

/* ---------- stack ---------- */
.stack-wrap{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.stack-col{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;
}
.stack-k{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.3em;color:var(--cyan);display:block;margin-bottom:18px;
}
.stack-col ul{display:flex;flex-direction:column;gap:11px}
.stack-col li{color:var(--muted);font-size:14px;padding-left:14px;position:relative}
.stack-col li::before{content:"›";position:absolute;left:0;color:var(--green)}
.stack-col b{color:var(--text);font-weight:600}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;padding:120px 24px;text-align:center}
.cta-bg{position:absolute;inset:0;pointer-events:none}
.cta-glow{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:700px;height:400px;background:radial-gradient(ellipse, rgba(16,185,129,.22), transparent 70%);filter:blur(40px)}
.cta-inner{position:relative;max-width:680px;margin:0 auto}
.cta-hardware{
  margin:0 auto 34px;width:min(800px,100%);height:auto;
  filter:saturate(.9);
}
.cta h2{font-family:var(--font-display);font-weight:700;font-size:clamp(32px,5vw,50px);letter-spacing:-.01em}
.cta p{color:var(--muted);margin:18px auto 30px;max-width:46ch;font-size:16.5px}
.cta .hero-actions{justify-content:center}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg-2);padding:44px 24px}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.footer-note{color:var(--muted);font-size:13.5px;max-width:62ch}
.footer-note a{color:var(--green)}
.footer-meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--dim)}
.footer-meta a{color:var(--cyan)}

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  background:rgba(4,8,16,.9);backdrop-filter:blur(8px);padding:40px;cursor:zoom-out;
}
.lightbox[hidden]{display:none}
.lb-frame{max-width:1180px;width:100%;text-align:center}
.lb-frame img{max-height:78vh;margin:0 auto;border:1px solid var(--line-strong);border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.7)}
.lb-frame figcaption{margin-top:16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--muted)}
.lb-close{
  position:absolute;top:22px;right:26px;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line-strong);background:rgba(148,197,255,.06);color:var(--text);
  font-size:16px;transition:transform .2s, border-color .2s;
}
.lb-close:hover{border-color:var(--red);color:var(--red);transform:rotate(90deg)}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- nav actions + hamburger ---------- */
.nav-actions{display:flex;align-items:center}
.nav-burger{
  display:none;position:relative;z-index:60;
  flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:9px;margin-left:6px;
  background:rgba(148,197,255,.06);border:1px solid var(--line-strong);border-radius:9px;
  transition:border-color .2s, background .2s;
}
.nav-burger:hover{border-color:var(--green)}
.burger-bar{
  display:block;width:100%;height:2px;border-radius:2px;
  background:var(--text);transition:transform .3s ease, opacity .3s ease, background .2s;
}
.nav-burger[aria-expanded="true"] .burger-bar:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--green)}
.nav-burger[aria-expanded="true"] .burger-bar:nth-child(2){opacity:0}
.nav-burger[aria-expanded="true"] .burger-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--green)}

/* ---------- mobile drawer ---------- */
.mobile-menu{
  position:fixed;top:69px;left:0;right:0;z-index:55;
  background:rgba(7,13,26,.98);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-strong);
  padding:10px 20px 26px;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:transform .3s ease, opacity .3s ease, visibility .3s;
}
.mobile-menu.open{transform:none;opacity:1;visibility:visible}
.mobile-links{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.mobile-links a{
  display:flex;align-items:center;gap:16px;
  padding:15px 4px;border-bottom:1px solid var(--line);
  font-family:var(--font-display);font-weight:600;font-size:17px;letter-spacing:.02em;color:var(--text);
  transition:color .2s, padding-left .2s;
}
.mobile-links a:last-child{border-bottom:0}
.mobile-links a:hover{color:var(--green);padding-left:10px}
.mm-num{font-family:var(--font-mono);font-size:11px;color:var(--green);letter-spacing:.2em}
.mm-cta{width:100%;justify-content:center;margin-top:20px}
body.menu-locked{overflow:hidden}

/* ---------- mobile menu ---------- */
@media (max-width:1000px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:80px}
  .hero-stage{max-width:640px;margin:0 auto;width:100%;min-width:0}
  .feed{top:-58px;right:4px}
  .grid-cards,.stack-wrap{grid-template-columns:1fr 1fr}
  .analytics-cols,.arch-cols{grid-template-columns:1fr;gap:40px}
  .hero-metrics{grid-template-columns:repeat(3,1fr)}
  .metric:nth-child(3){border-right:0}
  .metric:nth-child(n+4){border-top:1px solid var(--line)}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-burger{display:flex}
}
@media (max-width:680px){
  .mobile-menu{top:68px;padding:10px 16px 24px}
  .grid-cards,.stack-wrap{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(even){border-right:0}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}
  .hero-actions .btn{width:100%;justify-content:center}
  .feed{display:none}
  .section{padding:80px 20px}
  .hero-title{font-size:36px}
}
@media (max-width:420px){
  .nav-inner{padding:12px 16px}
  .brand-name{font-size:17px}
  .brand-mark{width:34px;height:34px}
  .hero-metrics{grid-template-columns:1fr 1fr}
  .metric{padding:18px 10px}
  .m-num{font-size:26px}
  .section{padding:64px 16px}
  .section-head{margin-bottom:40px}
  .hero-title{font-size:31px}
  .hero-tag{
    max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
    font-size:9px;letter-spacing:.08em;padding:6px 10px;
  }
  .hero-sub{font-size:15px}
  .hero-inner{padding:96px 16px 32px;gap:64px}
  .hero-actions{gap:10px}
  .card{padding:24px 20px}
  .cta{padding:90px 16px}
  .g-item img{aspect-ratio:1480/940}
}