#reading-progress{position:fixed;top:0;left:0;height:4px;width:100%;background:rgba(0,0,0,0.08);z-index:9999;overflow:hidden;pointer-events:none}
html.dark #reading-progress{background:rgba(255,255,255,0.08)}
#reading-progress .rp-bar{height:100%;width:0;background:var(--primary-color,#ef5350);transition:width 0.15s ease}