.nanlu-trace-return-strip{position:fixed;z-index:65;inset-inline-start:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));max-width:calc(100% - 32px)}.nanlu-trace-return-link{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:10px 16px;background:#f4efe4;color:#8f2f27;border:1px solid #a33229;box-shadow:0 4px 18px #211f1a14;font-size:14px;text-decoration:none}