/* Shared Japanese Ruby presentation. */
.japanese-ruby {
    line-height: 1.9;
    overflow-wrap: anywhere;
    word-break: normal;
    max-width: 100%;
}
.japanese-ruby ruby { ruby-position: over; white-space: normal; }
.japanese-ruby rt {
    font-size: 0.5em;
    line-height: 1;
    font-weight: 500;
    color: rgba(255,255,255,.85);
    letter-spacing: 0.02em;
    user-select: none;
}