/* 关键：只动 transform/opacity，最丝滑 */
html.pjax-is-changing #content-inner {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .18s ease, transform .18s ease;
}

/* 页面加载完成后回到正常状态（进入动画） */
#content-inner {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .28s cubic-bezier(.22,.61,.36,1),
              transform .28s cubic-bezier(.22,.61,.36,1);
}

/* 可选：点击后先“离场”更明显一点 */
html.pjax-leave #content-inner {
  opacity: 0;
  transform: translateY(-6px);
}