.install-banner {
  position: fixed;
  z-index: 90;
  inset-inline-end: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(380px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 6px 32px #0003;
  font-family: var(--sans);
}
.install-banner h2 {
  margin: 0 32px 8px 0;
  font-size: 15px;
  line-height: 1.8;
}
.install-banner p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
}
.install-banner-close {
  position: absolute;
  top: 8px;
  inset-inline-end: 8px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.install-banner-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.install-banner-actions .button { min-height: 44px; font-size: 12px; }
.install-banner-later {
  min-height: 44px;
  padding: 8px 16px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.install-banner button:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
@media (max-width: 760px) {
  .install-banner { bottom: calc(80px + env(safe-area-inset-bottom)); }
}