.floating-page-nav{position:fixed;z-index:70;top:0;left:clamp(12px,2.6vw,48px);right:clamp(12px,2.6vw,48px);height:calc(54px + env(safe-area-inset-top,0px));display:flex;align-items:center;justify-content:space-between;padding-top:env(safe-area-inset-top,0);background:transparent;border:0;color:#fff;font:500 12px/1.4 Arial,Dossier PuHuiTi,sans-serif;letter-spacing:0;pointer-events:none;mix-blend-mode:difference}.floating-page-nav .floating-page-back{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0;background:transparent;border:0;color:inherit;font:inherit;pointer-events:auto;transition:opacity .2s ease}.floating-page-nav .site-contents-trigger{min-height:44px;color:inherit;font:400 12px/1.4 Arial,Dossier PuHuiTi,sans-serif;pointer-events:auto}.floating-page-nav .floating-page-back:hover{opacity:.65}.floating-page-nav a:focus-visible,.floating-page-nav button:focus-visible{outline:2px solid currentColor;outline-offset:3px}@media(prefers-reduced-motion:reduce){.floating-page-nav .floating-page-back{transition:none}}