.dark-spoiler {
    margin: 2rem 0;
}

.dark-spoiler-summary {
    display: block;
    cursor: pointer;
    position: relative;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.dark-spoiler-summary h4 {
    margin: 0;
    font-size: 1.8rem;
    line-height: 1.2;
    font-weight: 700;
    color: inherit;
}

@media screen and (max-width: 782px) {
    .dark-spoiler-summary h4 {
    font-size: 1.3rem;
}
.dark-spoiler-content {
    font-size: 1rem !important;
}
}

.dark-spoiler-summary::after {
    content: '▶';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    transition: transform .3s ease;
    color: inherit;
}

.dark-spoiler[open] .dark-spoiler-summary::after {
    transform: translateY(-50%) rotate(90deg);
}

.dark-spoiler-content {
    margin: 0.75rem 0 1.5rem;
    font-size: 1.2rem;
    line-height: 1.6;
    color: inherit;
}