#logichub-install-app {
  position: fixed;
  left: 18px;
  bottom: 86px;
  z-index: 9997;
  display: none;
  align-items: center;
  gap: 9px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  padding: 11px 16px;
  background: #ef3f4a;
  color: #fff;
  font: inherit;
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(0,0,0,.28);
  cursor: pointer;
}
#logichub-install-app.is-visible { display: inline-flex; }
#logichub-install-app svg { width: 18px; height: 18px; fill: currentColor; }

.logichub-pwa-help {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  place-items: center;
  padding: 22px;
  background: rgba(0,0,0,.72);
  backdrop-filter: blur(5px);
}
.logichub-pwa-help.is-visible { display: grid; }
.logichub-pwa-help__card {
  width: min(440px, 100%);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 20px;
  padding: 24px;
  background: #111f33;
  color: #fff;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  text-align: right;
}
.logichub-pwa-help__card h3 { margin: 0 0 12px; }
.logichub-pwa-help__card p { margin: 0 0 18px; color: #c6cfdb; line-height: 1.9; }
.logichub-pwa-help__card button {
  width: 100%; border: 0; border-radius: 12px; padding: 11px 15px;
  background: #ef3f4a; color: #fff; font: inherit; font-weight: 700; cursor: pointer;
}
@media (max-width: 640px) {
  #logichub-install-app { left: 12px; bottom: 78px; padding: 10px 13px; }
}
@media (display-mode: standalone) {
  #logichub-install-app { display: none !important; }
}