/* Empty-chat greeting: tighten only the vertical rhythm; no layout or form positioning changes on normal desktop heights. */
main > div > div:has(> h1) > h1 {
  margin-top: 6px !important;
  margin-bottom: 0 !important;
  line-height: 1.16 !important;
}
main > div > div:has(> h1) > p {
  margin-top: 3px !important;
  margin-bottom: 0 !important;
  line-height: 1.35 !important;
}
/* The native empty-chat composer uses top:45%. On short windows it collides with the greeting. */
@media (max-height: 800px) {
  main ~ form { top: 52% !important; }
}