*{margin:0;padding:0;box-sizing:border-box}
:root{
  --nb-dark:#0B0F19;--nb-darker:#0D1117;--nb-cyan:#06B6D4;--nb-purple:#8B5CF6;
  --nb-light:#F9FAFB;--nb-gray:#9CA3AF;--nb-gray-dim:#6B7280;
  --card-bg:rgba(255,255,255,0.04);--card-border:rgba(255,255,255,0.08);
  --sans:'Inter',system-ui,sans-serif;--mono:'JetBrains Mono',monospace;
}
html{scroll-behavior:smooth}
body{background:var(--nb-dark);color:var(--nb-light);font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}

/* ─── NAV ─── */
nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(11,15,25,0.85);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.04)}
.nav-inner{max-width:1200px;margin:0 auto;padding:16px 32px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;letter-spacing:-.01em}
.logo-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center}
.logo-icon img{width:100%;height:100%;object-fit:contain}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-size:.875rem;color:var(--nb-gray);font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--nb-light)}
.nav-links a.active{color:var(--nb-light)}
.nav-cta{background:var(--nb-cyan);color:var(--nb-dark);font-weight:600;padding:8px 20px;border-radius:8px;font-size:.875rem;transition:all .2s;border:none;cursor:pointer}
.nav-cta:hover{background:#22d3ee;transform:translateY(-1px)}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--nb-light);font-size:1.5rem;cursor:pointer;padding:4px}

/* ─── SECTIONS ─── */
section{padding:120px 32px}
.container{max-width:1200px;margin:0 auto}
.section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--nb-cyan);margin-bottom:16px}
.section-title{font-size:2.8rem;font-weight:800;line-height:1.12;letter-spacing:-.03em;margin-bottom:16px}
.section-sub{font-size:1.1rem;color:var(--nb-gray);line-height:1.7;max-width:640px}

/* ─── HERO ─── */
#hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:80px}
#hero canvas{position:absolute;inset:0;z-index:0}
.hero-content{position:relative;z-index:10;text-align:center;width:100%}
.hero-tagline{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;line-height:1.08;letter-spacing:-.04em;margin-bottom:20px}
.hero-tagline .grad{background:linear-gradient(135deg,var(--nb-cyan) 0%,var(--nb-purple) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:1.15rem;color:var(--nb-gray);line-height:1.7;max-width:620px;margin:0 auto 36px}
.hero-stats{display:flex;gap:48px;justify-content:center;margin-top:48px}
.hero-stat{text-align:center}
.hero-stat-val{font-size:2rem;font-weight:800;font-family:var(--mono)}
.hero-stat-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--nb-gray);margin-top:4px}

/* ─── SUBPAGE HERO ─── */
.subpage-hero{padding-top:120px;padding-bottom:80px}
.subpage-hero .section-title{font-size:3rem}
.breadcrumb{font-size:.8rem;color:var(--nb-gray);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.breadcrumb a{color:var(--nb-cyan);font-weight:500}
.breadcrumb a:hover{color:#22d3ee}
.domain-badge{display:inline-flex;align-items:center;gap:8px;font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;font-weight:700;padding:4px 12px;border-radius:4px;margin-bottom:16px}

/* ─── CARDS ─── */
.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:32px;transition:all .3s}
.card:hover{border-color:rgba(255,255,255,0.12);transform:translateY(-2px)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}

/* ─── PORTFOLIO SECTION ─── */
.portfolio-card{position:relative;overflow:hidden}
.portfolio-card .card-status{position:absolute;top:20px;right:20px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:4px 10px;border-radius:4px}
.status-live{background:rgba(6,182,212,.15);color:var(--nb-cyan)}
.status-coming{background:rgba(139,92,246,.12);color:var(--nb-purple)}
.portfolio-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:20px}
.portfolio-card h3{font-size:1.3rem;font-weight:700;margin-bottom:8px}
.portfolio-card p{font-size:.9rem;color:var(--nb-gray);line-height:1.6}
.portfolio-tags{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.portfolio-tags span{font-size:.7rem;padding:3px 10px;border-radius:4px;background:rgba(255,255,255,0.04);color:var(--nb-gray);border:1px solid rgba(255,255,255,0.06)}

/* ─── QAE PRODUCT SECTION ─── */
#qae{background:linear-gradient(180deg,var(--nb-dark) 0%,rgba(6,182,212,0.03) 50%,var(--nb-dark) 100%)}
.qae-hero{text-align:center;margin-bottom:80px}
.qae-hero .section-title{font-size:3.2rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}

/* ─── DEMO EMBED ─── */
.demo-container{position:relative;width:100%;aspect-ratio:16/9;border-radius:16px;overflow:hidden;border:1px solid var(--card-border);background:var(--nb-darker)}
.demo-container canvas{width:100%;height:100%}
.demo-container video{width:100%;height:100%;object-fit:cover}
.demo-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:rgba(11,15,25,0.4);z-index:10;transition:opacity .5s}
.demo-overlay.hidden{opacity:0;pointer-events:none}
.demo-play-btn{width:64px;height:64px;border-radius:50%;background:var(--nb-cyan);color:var(--nb-dark);border:none;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;box-shadow:0 0 30px rgba(6,182,212,.3)}
.demo-play-btn:hover{transform:scale(1.08);box-shadow:0 0 40px rgba(6,182,212,.5)}
.demo-label{margin-top:12px;font-size:.8rem;color:var(--nb-gray)}

/* ─── VIDEO PLACEHOLDER ─── */
.video-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:16/9;border-radius:16px;border:2px dashed var(--card-border);background:rgba(0,0,0,.2);text-align:center;padding:40px}
.video-placeholder .placeholder-icon{font-size:3rem;margin-bottom:16px;opacity:.4}
.video-placeholder .placeholder-text{font-size:.9rem;color:var(--nb-gray-dim)}

/* ─── METRIC CARDS ─── */
.metric{text-align:center;padding:28px 20px}
.metric-val{font-size:2.2rem;font-weight:800;font-family:var(--mono)}
.metric-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--nb-gray);margin-top:6px}

/* ─── CTA SECTION ─── */
#cta{text-align:center;padding:160px 32px}
#cta .section-title{margin-bottom:12px}
.cta-btn{display:inline-flex;align-items:center;gap:8px;background:var(--nb-cyan);color:var(--nb-dark);font-weight:700;padding:14px 36px;border-radius:8px;font-size:1.05rem;transition:all .2s;border:none;cursor:pointer;margin-top:28px}
.cta-btn:hover{background:#22d3ee;transform:translateY(-2px);box-shadow:0 8px 30px rgba(6,182,212,.25)}

/* ─── FOOTER ─── */
footer{border-top:1px solid rgba(255,255,255,0.04);padding:40px 32px}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}
.footer-left{display:flex;align-items:center;gap:10px;font-weight:600;font-size:.9rem}
.footer-right{font-size:.8rem;color:var(--nb-gray-dim)}

/* ─── PARTICLES ─── */
.particle{position:absolute;width:2px;height:2px;background:var(--nb-cyan);border-radius:50%;opacity:0;animation:drift 8s infinite}
@keyframes drift{0%{opacity:0;transform:translateY(0)}20%{opacity:.4}80%{opacity:.2}100%{opacity:0;transform:translateY(-200px)}}

/* ─── DEMO SLIDES ─── */
.demo-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .8s ease;padding:24px;pointer-events:none}
.demo-slide.active{opacity:1}
.demo-slide-inner{max-width:90%;text-align:center}
.demo-caption{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.6);backdrop-filter:blur(8px);padding:10px 28px;border-radius:40px;font-size:.85rem;color:rgba(255,255,255,.9);max-width:700px;text-align:center;z-index:20;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.demo-progress{position:absolute;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--nb-cyan),var(--nb-purple));transition:width .3s;z-index:20}
.demo-nav{position:absolute;bottom:16px;right:16px;display:flex;gap:6px;z-index:20}
.demo-nav button{width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,.1);background:rgba(0,0,0,.5);color:var(--nb-light);font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.demo-nav button:hover{background:var(--nb-cyan);border-color:var(--nb-cyan);color:var(--nb-dark)}

/* ─── APPROACH PRINCIPLES ─── */
.principle-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.5rem;font-family:var(--mono);font-weight:800}

/* ─── EXTERNAL LINK ─── */
.ext-link{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;font-weight:600;color:var(--nb-cyan);transition:all .2s}
.ext-link:hover{color:#22d3ee;gap:10px}

/* ─── RESPONSIVE ─── */
@media(max-width:900px){
  .grid-2,.grid-3,.grid-4,.grid-5,.split{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap;gap:24px}
  section{padding:80px 20px}
  .nav-links{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:rgba(11,15,25,0.97);backdrop-filter:blur(16px);padding:16px 32px;gap:16px;border-bottom:1px solid rgba(255,255,255,0.04)}
  .nav-links.mobile-open{display:flex}
  .nav-links a{padding:8px 0}
  .nav-cta{text-align:center;width:100%}
  .mobile-menu-btn{display:block}
  .hero-tagline{font-size:2.4rem}
  .subpage-hero .section-title{font-size:2rem}
}