html[data-prelaunch="true"] { --launch-notice-height: 48px; scroll-padding-top: calc(90px + var(--launch-notice-height)); }
html[data-prelaunch="true"] body { padding-top: var(--launch-notice-height); }
.launch-notice {
  box-sizing: border-box;
  position: fixed;
  inset: 0 0 auto;
  z-index: 25;
  height: var(--launch-notice-height);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0 8px;
  padding: 8px 16px;
  border-bottom: 1px solid #8bbdc0;
  background: #e8f3f4;
  color: #184c51;
  font: 500 14px/1.35 system-ui, sans-serif;
  letter-spacing: 0;
  text-align: center;
}
.launch-notice time { font-weight: 750; }
html[data-prelaunch="true"] .site-header,
html[data-prelaunch="true"] .operator-header { top: var(--launch-notice-height); }
html[data-prelaunch="true"] .account-page .site-header { top: 0; }
html[data-prelaunch="true"] .guide-controls { top: calc(100px + var(--launch-notice-height)); }
html[data-prelaunch="true"] .book-toc { top: calc(92px + var(--launch-notice-height)); max-height: calc(100vh - 116px - var(--launch-notice-height)); }
@media (max-width: 360px) {
  html[data-prelaunch="true"] { --launch-notice-height: 64px; }
  .launch-notice { flex-direction: column; }
}
@media print {
  html[data-prelaunch="true"] body { padding-top: 0; }
  .launch-notice { position: static; border: 1px solid #8bbdc0; margin-bottom: 16px; }
}