/* 2026-10-16 save pictures (save-image.js): 保存 in the photo viewer, bottom right,
   same dark glass as its close button. */
.photo-viewer-save{
  position:absolute;z-index:2;right:14px;bottom:calc(env(safe-area-inset-bottom,0px) + 12px);
  height:36px;padding:0 15px;border:0;border-radius:999px;color:#fff;font:13px var(--ui-font);letter-spacing:.06em;
  background:rgba(0,0,0,.36);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:pointer;
}
.photo-viewer-save[hidden]{display:none}
.photo-viewer-save:active{background:rgba(0,0,0,.5)}