:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --secondary:#10b981;
  --dark:#1f2937;
  --light:#f9fafb;
  --gray:#6b7280;
  --light-gray:#e5e7eb;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--light);color:var(--dark);line-height:1.6}
.container{max-width:1200px;margin:0 auto;padding:0 2rem}
header{background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.06)}
nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:1rem}
.logo{display:flex;align-items:center;gap:.6rem;color:var(--primary);font-weight:800;text-decoration:none;font-size:1.25rem}
.nav-links{display:flex;gap:1.5rem}
.nav-links a{color:var(--dark);text-decoration:none;font-weight:600}
.nav-links a:hover{color:var(--primary)}
.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--dark)}
.cta-button{background:var(--primary);color:#fff;padding:.65rem 1rem;border-radius:.5rem;text-decoration:none;font-weight:700}
.cta-button:hover{background:var(--primary-dark)}
.hero{padding:6rem 0 3rem;text-align:center}
.hero h1{font-size:clamp(2.2rem,4vw,3.5rem);font-weight:900;margin:.5rem 0 1rem;background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{max-width:760px;margin:0 auto 2rem;color:var(--gray);font-size:1.125rem}
.button-group{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center;margin-bottom:2rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.4rem;border-radius:.6rem;font-weight:700;text-decoration:none}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.social-proof{display:flex;flex-wrap:wrap;gap:1.2rem;justify-content:center;margin:1rem 0 2rem;color:var(--gray)}
.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .7rem;border-radius:999px;background:#fff;border:1px solid var(--light-gray)}
.card{background:#fff;border-radius:12px;box-shadow:0 10px 25px rgba(0,0,0,.08);padding:1.5rem}
.demo-steps{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.demo-step{flex:1;text-align:center}
.demo-num{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto .5rem;background:var(--primary);color:#fff;font-weight:800}
.demo-arrow{opacity:.5}
.section{padding:4rem 0}
.section.alt{background:#fff}
.section.muted{background:var(--light)}
.section h2{text-align:center;font-size:clamp(1.8rem,3vw,2.6rem);margin:0 0 2rem}
.grid{display:grid;gap:1.2rem}
.grid.features{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.feature{background:var(--light);border-radius:12px;padding:1.2rem;text-align:center;transition:transform .2s}
.feature:hover{transform:translateY(-4px)}
.feature .icon{font-size:2rem;color:var(--primary);margin-bottom:.5rem}
.grid.cases{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.case{background:#fff;border-radius:12px;padding:1rem;text-align:center;box-shadow:0 6px 16px rgba(0,0,0,.05)}
.cta{padding:4rem 0;text-align:center;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.cta .btn-outline{border-color:#fff;color:#fff}
footer{background:var(--dark);color:#fff}
.footer-top{padding:3rem 0}
.footer-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.footer-grid h3{margin:0 0 .8rem}
.footer-grid a{color:#cbd5e1;text-decoration:none}
.footer-grid a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1rem 0;text-align:center;color:#cbd5e1}
main{display:block}
/* Forms */
form{display:grid;gap:.8rem}
input,textarea,select{padding:.8rem;border:1px solid var(--light-gray);border-radius:.5rem;background:#fff}
label{font-weight:700}
.notice{padding:1rem;border:1px dashed var(--light-gray);border-radius:.6rem;background:#fff;color:var(--gray)}
/* Responsive */
@media (max-width: 820px){
  .nav-links{display:none;position:absolute;inset:60px 0 auto 0;background:#fff;padding:1rem 2rem;flex-direction:column;border-bottom:1px solid var(--light-gray)}
  .nav-links.open{display:flex}
  .mobile-menu-btn{display:block}
}