/* ============================================================
   POSTERS SECTION (homepage embed)
   Hosts two iframes (poster-zju.html, poster-fringe.html) which
   render the posters in isolation to avoid CSS interaction with
   the host page.
============================================================ */

.posters-section {
  background: var(--void);
  padding: 4.5rem 2rem 3rem;
}
.posters-row {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.2rem;
}
@media (max-width: 720px) {
  .posters-row { grid-template-columns: 1fr; gap: 2.5rem; }
}
.poster-iframe {
  width: 100%;
  aspect-ratio: 3 / 4;
  border: 0;
  display: block;
  background: var(--void);
}