html{scroll-behavior:smooth}
#header{
  background:rgba(18,18,18,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 8px 30px rgba(0,0,0,.25);
}
#header.scrolled{
  background:rgba(18,18,18,.72);
  box-shadow:0 10px 40px rgba(0,0,0,.45);
}
.blur-orb{
  position:fixed;
  border-radius:9999px;
  filter:blur(70px);
  opacity:.35;
  z-index:-1;
}
.orb1{width:260px;height:260px;top:10%;left:8%;background:#2563eb;}
.orb2{width:320px;height:320px;bottom:8%;right:10%;background:#9333ea;}