/* Фото движется отдельно от фона и кнопок; лента остаётся неподвижной. */
.site-viewer {
  position: fixed;
  inset: 0;
  z-index: 60;
  overflow: hidden;
  isolation: isolate;
  opacity: 0;
  touch-action: none;
  overscroll-behavior: contain;
  user-select: none;
  -webkit-user-select: none;
  transition: opacity 220ms ease;
}
.site-viewer[hidden] { display: none; }
.site-viewer.is-open { opacity: 1; }
.site-viewer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(6, 10, 16, .97);
  opacity: var(--viewer-backdrop, 1);
  transition: opacity 240ms ease;
}
.site-viewer.is-dragging::before { transition: none; }
.site-viewer-scene {
  position: absolute;
  inset: 0;
  transform: translate3d(0, 12px, 0) scale(.965);
  transition: transform 260ms cubic-bezier(.2, .75, .25, 1);
}
.site-viewer.is-open .site-viewer-scene { transform: none; }
.site-viewer-track {
  display: flex;
  width: 100%;
  height: 100%;
  transform: translate3d(-100%, 0, 0);
  will-change: transform;
}
.site-viewer-slide {
  flex: 0 0 100%;
  min-width: 0;
  height: 100%;
  box-sizing: border-box;
  padding: calc(60px + env(safe-area-inset-top)) 12px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: center;
}
.site-viewer-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: zoom-out;
  -webkit-user-drag: none;
}
.site-viewer-close,
.site-viewer-nav {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(0, 0, 0, .45);
  color: #fff;
  cursor: pointer;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.site-viewer-close {
  top: calc(12px + env(safe-area-inset-top));
  right: 12px;
  width: 44px;
  height: 44px;
  font-size: 26px;
}
.site-viewer-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  font-size: 30px;
}
.site-viewer-prev { left: 10px; }
.site-viewer-next { right: 10px; }
.site-viewer-nav[hidden] { display: none; }
.site-viewer-close:hover,
.site-viewer-nav:hover { background: rgba(0, 0, 0, .68); }
.site-viewer-close:focus-visible,
.site-viewer-nav:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  .site-viewer, .site-viewer-scene, .site-viewer::before { transition: none; }
  .site-viewer-scene { transform: none; }
}