/* The standalone gateway shares the application's pale glass navigation. */
.locus-intro .poster-header {
  --cinematic-nav-ink: #1e293b;
  --cinematic-nav-muted: #526176;
  width: min(1280px, calc(100% - 48px));
  min-height: 76px;
  margin-top: max(14px, env(safe-area-inset-top));
  padding: 10px 16px;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 28px;
  background: linear-gradient(120deg, #f9fbfe, #edf2f9);
  box-shadow: 0 12px 36px rgba(39, 58, 86, .08), 0 2px 5px rgba(39, 58, 86, .035),
    0 0 0 1px rgba(96, 116, 146, .09), inset 0 1px 0 rgba(255, 255, 255, .95);
  color: var(--cinematic-nav-ink);
}

.locus-intro .poster-header .poster-brand {
  min-width: 0;
  min-height: 44px;
  gap: 11px;
  border-radius: 16px;
}

.locus-intro .poster-header .poster-brand > img {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  padding: 7px;
  border: 1px solid rgba(255, 255, 255, .92);
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .92), rgba(248, 249, 253, .5));
  box-shadow: 0 2px 7px rgba(49, 68, 100, .045), inset 0 1px 0 #fff;
}

.locus-intro .poster-header .poster-brand-copy { gap: 4px; }
.locus-intro .poster-header .poster-brand-name {
  color: var(--cinematic-nav-ink);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -.04em;
}
.locus-intro .poster-header .poster-brand-place {
  max-width: none;
  color: #64748b;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.4;
}

.locus-intro .poster-header .poster-nav {
  flex-shrink: 0;
  padding: 4px;
  gap: 4px;
  border: 1px solid rgba(83, 111, 154, .055);
  border-radius: 22px;
  background: rgba(71, 103, 151, .04);
  box-shadow: inset 0 1px 2px rgba(51, 76, 112, .025), 0 1px 0 rgba(255, 255, 255, .5);
}

.locus-intro .poster-header .poster-nav-button {
  width: auto;
  min-width: 84px;
  min-height: 44px;
  padding: 10px 18px;
  aspect-ratio: auto;
  border: 1px solid transparent;
  border-radius: 18px;
  color: var(--cinematic-nav-muted);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .015em;
  filter: none;
  transform: none;
  transition: color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.locus-intro .poster-header .poster-nav-button img { display: none; }
.locus-intro .poster-header .poster-nav-button:last-child {
  border-color: rgba(255, 255, 255, .95);
  background: linear-gradient(160deg, rgba(255, 255, 255, .94), rgba(216, 231, 253, .78));
  color: #1d549e;
  box-shadow: 0 2px 8px rgba(47, 79, 124, .065), inset 0 1px 0 #fff;
}
.locus-intro .poster-header .poster-nav-button:hover {
  background-color: rgba(255, 255, 255, .78);
  color: #1d549e;
  box-shadow: inset 0 1px 0 #fff, 0 3px 10px rgba(51, 76, 112, .065);
  filter: none;
  transform: none;
}
.locus-intro .poster-header .poster-nav-button:active {
  background-color: #dce9fa;
  box-shadow: inset 0 1px 3px rgba(47, 79, 124, .08);
}
.locus-intro .poster-header a:focus-visible {
  outline: 2px solid #387ce0;
  outline-offset: 3px;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .locus-intro .poster-header {
    background: linear-gradient(120deg, rgba(255, 255, 255, .78), rgba(239, 245, 253, .65) 48%, rgba(229, 238, 250, .72));
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    backdrop-filter: blur(28px) saturate(160%);
  }
}

@media (max-width: 540px) {
  .locus-intro .poster-header {
    width: calc(100% - 24px);
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 10px;
    border-radius: 24px;
  }
  .locus-intro .poster-header .poster-brand {
    width: 100%;
    justify-content: center;
    gap: 10px;
  }
  .locus-intro .poster-header .poster-brand-name { font-size: 17px; }
  .locus-intro .poster-header .poster-brand-place { font-size: 8px; }
  .locus-intro .poster-header .poster-nav { width: 100%; }
  .locus-intro .poster-header .poster-nav-button { flex: 1; min-width: 0; }
}

@media (prefers-reduced-transparency: reduce) {
  .locus-intro .poster-header {
    background: linear-gradient(120deg, #f9fbfe, #edf2f9);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  .locus-intro .poster-header .poster-nav { background: #eaf0f8; }
}

@media (prefers-reduced-motion: reduce) {
  .locus-intro .poster-header a { transition: none; }
}

@media (forced-colors: active) {
  .locus-intro .poster-header,
  .locus-intro .poster-header .poster-nav,
  .locus-intro .poster-header .poster-nav-button { border: 1px solid ButtonText; }
  .locus-intro .poster-header a:focus-visible { outline-color: Highlight; }
}