.reading-status {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.catalog-preview li.is-read .catalog-title,
.catalog-preview li.is-read a > span:first-child,
.chapter-list > li.is-read .chapter-main strong,
.chapter-list > li.is-read .chapter-number,
.chapter-list > li.is-read .chapter-state {
    color: #999;
}

.chapter-list > li.is-read .chapter-main strong { font-weight: 540; }
.chapter-list > li.is-read .chapter-main:hover strong,
.catalog-preview li.is-read a:hover .catalog-title { color: #666; }

.m-site .m-catalog-preview li.is-read .m-catalog-copy strong,
.m-site .m-volume-list li.is-read .m-volume-copy strong,
.m-site .m-volume-list li.is-read .m-volume-index,
.m-site .m-volume-list li.is-read .m-volume-state {
    color: #a2a2a2;
}

.m-site .m-catalog-preview li.is-read .m-catalog-copy strong,
.m-site .m-volume-list li.is-read .m-volume-copy strong { font-weight: 480; }
.m-site .m-catalog-preview li.is-read a:active .m-catalog-copy strong,
.m-site .m-volume-list li.is-read a:active .m-volume-copy strong { color: #777; }

[data-reading-continue].is-continue { transition: color .18s ease, background-color .18s ease, transform .18s ease; }
[data-reading-continue].is-continue:active { transform: scale(.985); }

@media (prefers-reduced-motion: reduce) {
    [data-reading-continue].is-continue { transition: none; }
}