:root{
  --bg: #0a0e17;
  --bg-alt: #0d1320;
  --surface: #111827;
  --border: #1f2937;
  --text: #e5e7eb;
  --text-dim: #94a3b8;
  --primary: #2563eb;
  --accent: #22d3ee;
  --accent-soft: rgba(34,211,238,.12);
  --radius: 14px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
img{max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background: rgba(10,14,23,.85);
  backdrop-filter: blur(8px);
  border-bottom:1px solid var(--border);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:800;letter-spacing:.5px}
.logo span{color:var(--accent)}
.logo-icon{width:34px;height:34px}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--text-dim);font-weight:500;font-size:.95rem;transition:color .2s}
.nav a:hover{color:var(--text)}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:1.6rem;cursor:pointer}

.btn{
  display:inline-block;padding:12px 24px;border-radius:999px;
  font-weight:600;font-size:.95rem;cursor:pointer;border:1px solid transparent;
  transition:all .2s;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.btn-primary:hover{filter:brightness(1.1)}
.btn-ghost{border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-nav{padding:10px 20px;background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent)}
.btn-full{width:100%}

/* Hero */
.hero{padding:90px 0 70px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.tag{
  display:inline-block;font-size:.8rem;color:var(--accent);
  background:var(--accent-soft);padding:6px 14px;border-radius:999px;margin-bottom:18px;font-weight:600;
}
.hero h1{font-size:2.6rem;line-height:1.2;margin-bottom:18px}
.lead{color:var(--text-dim);font-size:1.05rem;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

.hero-visual{position:relative;height:380px}
.glow{
  position:absolute;inset:0;margin:auto;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle, var(--accent-soft), transparent 70%);
  filter:blur(10px);
}
.orbit-card{
  position:absolute;z-index:2;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px 20px;font-weight:600;font-size:.9rem;
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.card-1{top:10%;left:5%}
.card-2{top:45%;right:0}
.card-3{bottom:8%;left:18%}

.connect-svg{position:absolute;inset:0;z-index:1;width:100%;height:100%;overflow:visible}
.connect-svg .link{
  stroke:url(#lineGrad);stroke-width:.35;stroke-dasharray:3 2;
  opacity:.6;animation:dashFlow 6s linear infinite;
}
.connect-svg .node{
  fill:var(--accent);
  animation:nodePulse 2.4s ease-in-out infinite;
}
.connect-svg .node:nth-of-type(2){animation-delay:.4s}
.connect-svg .node:nth-of-type(3){animation-delay:.8s}
@keyframes dashFlow{to{stroke-dashoffset:-50}}
@keyframes nodePulse{
  0%,100%{r:1.8;opacity:.8}
  50%{r:3;opacity:1}
}

/* Logos strip */
.logos{padding:30px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.logos-label{color:var(--text-dim);font-size:.85rem;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}
.logos-row{display:flex;gap:32px;flex-wrap:wrap;color:var(--text-dim);font-weight:600;font-size:.95rem}

/* Sections */
.section{padding:90px 0}
.section-alt{background:var(--bg-alt)}
.section-tag{color:var(--accent);font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:1px}
h2{font-size:2rem;margin:10px 0 24px}

.about-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:50px}
.about-grid p{color:var(--text-dim);margin-bottom:14px}
.stat-list{display:flex;flex-direction:column;gap:22px}
.stat-list li{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.stat-list strong{display:block;color:var(--accent);font-size:1.2rem;margin-bottom:4px}
.stat-list span{color:var(--text-dim);font-size:.9rem}

.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:10px}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:transform .2s,border-color .2s;
}
.card:hover{transform:translateY(-4px);border-color:var(--accent)}
.card-icon{font-size:1.8rem;margin-bottom:14px}
.card h3{font-size:1.1rem;margin-bottom:8px}
.card p{color:var(--text-dim);font-size:.92rem}

.sankhya-section{background:linear-gradient(135deg, var(--bg-alt), var(--bg))}
.sankhya-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}
.sankhya-grid p{color:var(--text-dim);margin-bottom:18px}
.check-list{display:flex;flex-direction:column;gap:10px}
.check-list li{color:var(--text);font-size:.95rem;padding-left:26px;position:relative}
.check-list li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.sankhya-badge{display:flex;justify-content:center}
.badge-circle{
  width:220px;height:220px;border-radius:50%;
  border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;font-weight:800;color:var(--accent);
  background:var(--accent-soft);
  box-shadow:0 0 60px var(--accent-soft);
}

.diff-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.diff-item h3{color:var(--accent);font-size:1.05rem;margin-bottom:8px}
.diff-item p{color:var(--text-dim);font-size:.9rem}

/* CTA / Contact */
.cta-section{padding:90px 0;background:var(--bg-alt);border-top:1px solid var(--border)}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.cta-grid h2{margin-top:0}
.cta-grid p{color:var(--text-dim);margin-bottom:20px}
.contact-info li{color:var(--text);margin-bottom:8px;font-size:.95rem}

.contact-form{display:flex;flex-direction:column;gap:14px}
.contact-form input,.contact-form textarea{
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:13px 16px;color:var(--text);font-size:.95rem;font-family:inherit;
}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent)}
.form-note{color:var(--accent);font-size:.9rem;min-height:1.2em}

/* Footer */
.site-footer{padding:30px 0;border-top:1px solid var(--border)}
.footer-grid{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.footer-grid p{color:var(--text-dim);font-size:.85rem}

/* Responsive */
@media (max-width: 900px){
  .hero-grid,.about-grid,.sankhya-grid,.cta-grid{grid-template-columns:1fr}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .diff-grid{grid-template-columns:repeat(2,1fr)}
  .hero-visual{display:none}
}
@media (max-width: 640px){
  .nav{
    position:absolute;top:72px;left:0;right:0;background:var(--bg);
    flex-direction:column;align-items:flex-start;padding:20px 24px;gap:16px;
    border-bottom:1px solid var(--border);display:none;
  }
  .nav.open{display:flex}
  .menu-toggle{display:block}
  .hero h1{font-size:2rem}
  .cards-grid,.diff-grid{grid-template-columns:1fr}
}