.academy-install-button {
  position: fixed;
  z-index: 90;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: none;
  align-items: center;
  gap: 9px;
  border: 1px solid #cfe3c3;
  border-radius: 999px;
  background: #356c31;
  color: white;
  padding: 11px 17px;
  box-shadow: 0 8px 28px rgba(18, 55, 25, .22);
  font: 700 13px/1.2 Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  cursor: pointer;
}
.academy-install-button.is-visible { display: inline-flex; }
.academy-install-button:hover { background: #28572b; }
.academy-install-button:focus-visible,
.academy-install-close:focus-visible { outline: 3px solid #a2cc84; outline-offset: 3px; }
.academy-install-backdrop {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: rgba(15, 36, 21, .65);
  display: grid;
  place-items: center;
  padding: 20px;
}
.academy-install-help {
  position: relative;
  width: min(100%, 410px);
  padding: 25px;
  border: 1px solid #d9e9d2;
  border-radius: 18px;
  box-shadow: 0 18px 70px rgba(0, 0, 0, .2);
  background: #fff;
  color: #26392c;
  font: 14px/1.65 Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.academy-install-help h2 { margin: 0 0 10px; font-size: 22px; color: #1f4029; }
.academy-install-help p { margin: 0 0 12px; color: #426149; }
.academy-install-help strong { color: #244d2c; }
.academy-install-close {
  border: 0;
  background: #ecf4e6;
  color: #244d2c;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 750;
}
@media (display-mode: standalone) { .academy-install-button { display: none !important; } }