.install-app-button {
  font: inherit;
  font-weight: 600;
  color: #4338ca;
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}
.install-app-button:focus-visible, #install-help button:focus-visible {
  outline: 3px solid #4f46e5;
  outline-offset: 3px;
}
#install-help {
  box-sizing: border-box;
  margin: auto;
  padding: 28px;
  width: min(440px, calc(100% - 32px));
  max-height: calc(100% - 32px);
  overflow: auto;
  border: 0;
  border-radius: 20px;
  color: #0f172a;
  background: white;
  box-shadow: 0 20px 80px #0f172a33;
  font: 16px/1.6 system-ui, sans-serif;
}
#install-help::backdrop { background: #0f172a80; }
#install-help h2 { margin: 0 0 16px; font-size: 24px; line-height: 1.25; }
#install-help p { margin: 12px 0; color: #475569; }
#install-help button {
  margin-top: 12px;
  padding: 10px 20px;
  border: 0;
  border-radius: 10px;
  background: #4f46e5;
  color: white;
  font: inherit;
  cursor: pointer;
}