#ria-pwa-install {
  position: fixed; z-index: 9999; left: 50%; bottom: max(18px, env(safe-area-inset-bottom));
  transform: translateX(-50%); display: flex; align-items: center; justify-content: center; gap: 10px;
  max-width: calc(100vw - 28px); padding: 13px 20px; border: 2px solid #17130f; border-radius: 999px;
  background: #d71968; color: #fff8e8; box-shadow: 0 8px 24px rgba(43,25,14,.25);
  font: 800 16px/1.2 system-ui,sans-serif; cursor: pointer;
}
#ria-pwa-install:focus-visible { outline: 4px solid #f1bf3b; outline-offset: 3px; }
#ria-pwa-help { position: fixed; z-index: 10000; inset: 0; display: grid; place-items: center; padding: 20px; background: rgba(23,19,15,.58); }
#ria-pwa-help[hidden], #ria-pwa-install[hidden] { display: none; }
.ria-pwa-card { width: min(460px,100%); padding: 26px; border: 3px solid #17130f; border-radius: 24px; background: #fff8e8; color: #17130f; box-shadow: 0 20px 55px rgba(23,19,15,.35); font: 17px/1.55 system-ui,sans-serif; }
.ria-pwa-card h2 { margin: 0 0 10px; color: #d71968; font-size: 27px; }
.ria-pwa-card ol { margin: 14px 0 20px; padding-left: 24px; }
.ria-pwa-card button { width: 100%; padding: 12px 18px; border: 0; border-radius: 999px; background: #2a89b9; color: white; font: 800 16px system-ui,sans-serif; cursor: pointer; }
@media (max-width: 520px) { #ria-pwa-install { width: calc(100vw - 28px); } }