html { 
  scroll-behavior: smooth; 
}
body { 
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; 
}
.dark body { 
  background-color: #0b1220; 
  color: #e2e8f0; 
}
* { 
  transition: background-color .2s, border-color .2s, color .2s; 
}
::-webkit-scrollbar { 
  width: 8px; 
}
::-webkit-scrollbar-thumb { 
  background: rgba(14,165,233,.35); 
  border-radius: 8px; 
}