.nav.open .nav-links {
  display: flex;
}

@media (max-width: 1080px) {
  .brand-name {
    display: none;
  }

  .brand-logos img {
    max-width: 196px;
  }

  .speaker-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .hero-grid,
  .feature-grid,
  .venue-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .timeline-block {
    grid-template-columns: 1fr;
  }

  .timeline-sessions {
    grid-template-columns: 1fr;
  }

  .timeline-time {
    position: static;
  }

  .split-heading {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 1.5rem, var(--container));
  }

  .nav {
    min-height: 68px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0.75rem;
    right: 0.75rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
  }

  .nav-links a {
    justify-content: flex-start;
    color: var(--blue-900);
  }

  .brand-logos img {
    height: 38px;
    max-width: 180px;
  }

  .hero {
    padding: 3rem 0;
  }

  .hero h1 {
    font-size: 2.7rem;
  }

  .hero-actions,
  .venue-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .speaker-grid,
  .announcement-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  .session-card a,
  .feature-card,
  .quick-card,
  .search-shell,
  .venue-card,
  .session-detail-card {
    padding: 1rem;
  }

  .section,
  .page-hero {
    padding: 2.75rem 0;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 1rem, var(--container));
  }

  .brand-logos {
    gap: 0.45rem;
    padding: 0.3rem 0.45rem;
  }

  .brand-logos img {
    height: 34px;
    max-width: 160px;
  }

  .hero h1 {
    font-size: 2.2rem;
    letter-spacing: -0.025em;
  }

  .hero-panel {
    justify-items: center;
  }

  .hero-brand-card {
    width: min(100%, 340px);
    justify-self: center;
    justify-content: center;
  }

  .hero-brand-card img {
    height: 70px;
    max-width: 220px;
  }

  .countdown,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .speaker-card {
    grid-template-columns: 1fr;
  }

  .speaker-profile-head {
    grid-template-columns: 1fr;
    padding-right: 2.8rem;
  }

  .speaker-photo {
    width: 70px;
    height: 70px;
  }
}