.iphone-install-notice {
  box-sizing: border-box;
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100vh - 40px);
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  padding: 24px;
  border: 1px solid #e0b85a;
  border-radius: 20px;
  background: #0f1923;
  color: #f4f6fa;
  font: 15px/1.5 system-ui, sans-serif;
  box-shadow: 0 20px 60px #0008;
}
.iphone-install-notice::backdrop { background: #000b; }
.iphone-install-notice img { display: block; margin: 0 auto 16px; border-radius: 14px; }
.iphone-install-notice h2 { margin: 0 0 12px; font-size: 21px; line-height: 1.25; color: #f0cd78; text-align: center; }
.iphone-install-notice p { margin: 12px 0; }
.iphone-install-notice ol { padding-left: 22px; margin: 16px 0; }
.iphone-install-notice li { margin: 8px 0; }
.iphone-install-notice .iphone-install-notice-note { color: #c1cbd7; font-size: 13px; }
.iphone-install-notice button { width: 100%; margin-top: 10px; padding: 12px 18px; border: 0; border-radius: 12px; background: #f0cd78; color: #0f1923; font: 700 16px system-ui, sans-serif; cursor: pointer; }
.iphone-install-notice button:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.iphone-install-notice-backdrop { position: fixed; z-index: 55000; inset: 0; display: flex; align-items: center; justify-content: center; padding: 20px 0; background: #000b; }
.iphone-install-notice-backdrop[hidden] { display: none !important; }
.iphone-install-notice-fallback { display: block; position: relative; margin: 0; }