:root{
  --bg:#0b0d1a;
  --bg-2:#11142a;
  --surface:#161a35;
  --surface-2:#1d2244;
  --border:rgba(255,255,255,.08);
  --text:#eef0ff;
  --muted:#9aa0c7;
  --primary:#7c5cff;
  --accent:#22d3ee;
  --pink:#ec4899;
  --gradient:linear-gradient(135deg,#7c5cff 0%,#22d3ee 100%);
  --gradient-2:linear-gradient(135deg,#ec4899 0%,#7c5cff 100%);
  --radius:14px;
  --shadow:0 20px 60px -20px rgba(124,92,255,.4);
  --container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;transition:.2s}
a:hover{color:var(--primary)}
h1,h2,h3,h4{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;line-height:1.15;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.75rem)}
h2{font-size:clamp(1.6rem,3.5vw,2.5rem);margin-bottom:1rem}
h3{font-size:1.25rem;margin-bottom:.5rem}
p{color:var(--muted);margin-bottom:1rem}
.container{max-width:var(--container);margin:0 auto;padding:0 1.25rem}
.gradient-text{background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,13,26,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:1rem 1.25rem;max-width:var(--container);margin:0 auto;gap:1rem;
}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.15rem;color:var(--text)}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--gradient);display:grid;place-items:center;font-size:1.1rem;box-shadow:var(--shadow)}
.nav-links{display:flex;gap:.25rem;list-style:none;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;font-size:.95rem;padding:.5rem .85rem;border-radius:8px}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--surface)}
.nav-cta{background:var(--gradient);color:#fff!important;padding:.6rem 1.1rem!important;border-radius:10px;font-weight:600}
.nav-cta:hover{color:#fff!important;transform:translateY(-1px);box-shadow:var(--shadow)}
.burger{display:none;background:none;border:0;color:var(--text);font-size:1.6rem;cursor:pointer;padding:.25rem}

/* Hero */
.hero{
  position:relative;padding:5rem 0 4rem;overflow:hidden;
  background:radial-gradient(1000px 500px at 80% -10%,rgba(124,92,255,.25),transparent 60%),
             radial-gradient(800px 400px at 10% 30%,rgba(34,211,238,.18),transparent 60%);
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--accent);background:rgba(34,211,238,.1);padding:.4rem .85rem;border-radius:999px;border:1px solid rgba(34,211,238,.25);margin-bottom:1.25rem}
.hero h1{margin-bottom:1.25rem}
.hero p.lead{font-size:1.15rem;color:#c7cae8;margin-bottom:2rem;max-width:540px}
.hero-meta{display:flex;flex-wrap:wrap;gap:1.5rem;margin-bottom:2rem}
.hero-meta div{display:flex;flex-direction:column}
.hero-meta strong{font-size:1.4rem;color:var(--text);font-family:'Space Grotesk',sans-serif}
.hero-meta span{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
.cta-row{display:flex;gap:1rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.95rem 1.7rem;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;border:0;transition:.25s;text-decoration:none}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 25px 70px -20px rgba(124,92,255,.6)}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.hero-art{position:relative;border-radius:24px;overflow:hidden;box-shadow:0 30px 100px -20px rgba(124,92,255,.5);aspect-ratio:16/10}
.hero-art img{width:100%;height:100%;object-fit:cover}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,transparent 50%,rgba(11,13,26,.65))}

/* Sections */
section{padding:4rem 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 3rem}
.section-head .eyebrow{margin-bottom:.85rem}
.section-head p{font-size:1.05rem}

/* Feature grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;transition:.25s;position:relative;overflow:hidden}
.feature::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--gradient);opacity:0;transition:.25s}
.feature:hover{transform:translateY(-4px);border-color:rgba(124,92,255,.3)}
.feature:hover::before{opacity:1}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--gradient);display:grid;place-items:center;font-size:1.4rem;margin-bottom:1rem}

/* Screenshots */
.screens{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.screen{border-radius:18px;overflow:hidden;background:var(--surface);border:1px solid var(--border);aspect-ratio:9/16;transition:.3s}
.screen:hover{transform:scale(1.03);box-shadow:var(--shadow)}
.screen img{width:100%;height:100%;object-fit:cover}

/* Two-column */
.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.two-col img{border-radius:var(--radius);box-shadow:var(--shadow)}

/* Stats */
.stats{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.stat strong{display:block;font-family:'Space Grotesk',sans-serif;font-size:2.5rem;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:.25rem}
.stat span{color:var(--muted);font-size:.95rem}

/* Testimonials */
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.testimonial{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem}
.testimonial .stars{color:#fbbf24;margin-bottom:.85rem;font-size:1rem;letter-spacing:.1em}
.testimonial p{color:#d4d7f0;font-style:italic;margin-bottom:1.25rem}
.testimonial-author{display:flex;align-items:center;gap:.75rem}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--gradient-2);display:grid;place-items:center;color:#fff;font-weight:700}
.testimonial-author strong{display:block;color:var(--text);font-size:.95rem}
.testimonial-author small{color:var(--muted)}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-bottom:.75rem;overflow:hidden}
.faq-q{width:100%;background:none;border:0;color:var(--text);padding:1.25rem 1.5rem;text-align:left;cursor:pointer;font-size:1.05rem;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:1rem;font-family:inherit}
.faq-q::after{content:"+";font-size:1.5rem;color:var(--accent);transition:.2s;flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 1.5rem;max-height:0;overflow:hidden;transition:.3s;color:var(--muted)}
.faq-item.open .faq-a{padding:0 1.5rem 1.25rem;max-height:400px}

/* CTA banner */
.cta-banner{background:var(--gradient);border-radius:24px;padding:3.5rem 2rem;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;inset:0;background:url('../images/brain-bg.jpg') center/cover;opacity:.15;mix-blend-mode:overlay}
.cta-banner h2,.cta-banner p{color:#fff;position:relative}
.cta-banner p{color:rgba(255,255,255,.9);max-width:560px;margin:0 auto 1.75rem}
.cta-banner .btn{position:relative;background:#fff;color:var(--primary)}
.cta-banner .btn:hover{background:#0b0d1a;color:#fff;transform:translateY(-2px)}

/* Article / page content */
.page-hero{padding:4rem 0 3rem;background:radial-gradient(800px 400px at 50% -20%,rgba(124,92,255,.25),transparent 60%);text-align:center}
.page-hero .eyebrow{margin-bottom:1rem}
.page-hero p{max-width:680px;margin:1rem auto 0;font-size:1.1rem}
.prose{max-width:780px;margin:0 auto;font-size:1.05rem}
.prose h2{margin-top:2.5rem;margin-bottom:1rem}
.prose h3{margin-top:1.75rem;color:var(--text);font-size:1.3rem}
.prose p{color:#c7cae8;margin-bottom:1.25rem}
.prose ul,.prose ol{margin:0 0 1.5rem 1.5rem;color:#c7cae8}
.prose li{margin-bottom:.6rem}
.prose img{border-radius:var(--radius);margin:2rem 0;box-shadow:var(--shadow)}
.callout{background:var(--surface);border-left:4px solid var(--accent);border-radius:8px;padding:1.25rem 1.5rem;margin:1.75rem 0}
.callout p{margin:0;color:#d4d7f0}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.news-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);border-color:rgba(124,92,255,.3)}
.news-card-img{aspect-ratio:16/10;overflow:hidden}
.news-card-img img{width:100%;height:100%;object-fit:cover;transition:.4s}
.news-card:hover .news-card-img img{transform:scale(1.05)}
.news-card-body{padding:1.5rem;flex:1;display:flex;flex-direction:column}
.news-meta{font-size:.8rem;color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-weight:600;margin-bottom:.6rem}
.news-card h3{margin-bottom:.75rem;color:var(--text);font-size:1.15rem}
.news-card p{flex:1;font-size:.95rem}
.read-more{color:var(--accent);font-weight:600;font-size:.9rem;margin-top:.75rem;display:inline-flex;gap:.35rem;align-items:center}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;max-width:980px;margin:0 auto}
.contact-info p{margin-bottom:1rem}
.contact-info ul{list-style:none;padding:0}
.contact-info li{padding:.65rem 0;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;gap:1rem;color:#c7cae8}
.contact-info li strong{color:var(--text)}
form{background:var(--surface);padding:2rem;border-radius:var(--radius);border:1px solid var(--border)}
label{display:block;margin-bottom:.4rem;font-weight:600;font-size:.9rem;color:var(--text)}
.field{margin-bottom:1.1rem}
input,textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:.85rem 1rem;color:var(--text);font-family:inherit;font-size:1rem;transition:.2s}
input:focus,textarea:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(124,92,255,.2)}
textarea{resize:vertical;min-height:130px}

/* Footer */
footer{background:var(--bg-2);border-top:1px solid var(--border);padding:3rem 0 1.5rem;margin-top:3rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
.footer-grid h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.12em;color:var(--text);margin-bottom:1rem}
.footer-grid ul{list-style:none;padding:0}
.footer-grid li{margin-bottom:.55rem}
.footer-grid a{color:var(--muted);font-size:.95rem}
.footer-grid a:hover{color:var(--accent)}
.footer-brand p{font-size:.95rem;max-width:340px}
.footer-bottom{padding-top:1.5rem;border-top:1px solid var(--border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:.85rem;color:var(--muted)}

/* Animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.reveal{animation:fadeUp .7s ease both}

/* Mobile */
@media(max-width:900px){
  .hero{padding:3rem 0 2.5rem}
  .hero-grid,.two-col,.contact-grid{grid-template-columns:1fr;gap:2rem}
  .hero-art{aspect-ratio:16/11}
  .features,.screens,.testimonials,.news-grid{grid-template-columns:1fr 1fr;gap:1rem}
  .stat-grid{grid-template-columns:1fr 1fr;gap:1.25rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;top:69px;right:0;left:0;flex-direction:column;background:var(--bg-2);padding:1rem;border-bottom:1px solid var(--border);align-items:stretch;gap:.25rem;display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:.85rem 1rem}
  .burger{display:block}
  section{padding:3rem 0}
  .cta-banner{padding:2.5rem 1.25rem}
}
@media(max-width:560px){
  .features,.screens,.testimonials,.news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:1.75rem}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat strong{font-size:2rem}
  h1{font-size:2.1rem}
  .hero-meta{gap:1rem}
}