.intro-animated-gradient__root {
    padding-top: clamp(4rem, 12vw, 10rem);
    padding-bottom: clamp(4rem, 12vw, 10rem);
    min-height: min(32rem, 85vh);
}

@keyframes intro-animated-gradient-spin {
    to {
        transform: rotate(360deg);
    }
}

.intro-animated-gradient__spin--left,
.intro-animated-gradient__spin--right {
    width: 85%;
    height: 85%;
    top: 7.5%;
    animation-name: intro-animated-gradient-spin;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    transform-origin: 50% 50%;
}

.intro-animated-gradient__spin--left {
    left: -18%;
    animation-duration: 48s;
}

.intro-animated-gradient__spin--right {
    right: -18%;
    animation-duration: 60s;
    animation-direction: reverse;
}

.intro-animated-gradient__area {
    max-width: 48rem;
}


.passage-chapter__visual--glow:hover { transform: scale(1.05); transition: transform .2s ease; }

.passage-chapter__prompt--glow:hover { transform: scale(1.05); transition: transform .2s ease; }

.content-heading-gap {
    margin-bottom: 2rem;
}

.content-img-compact {
    display: block;
    width: 100%;
    height: 12rem;
    min-height: 12rem;
    flex-shrink: 0;
    object-fit: cover;
}
@media (min-width: 768px) {
    .content-img-compact {
        height: 14rem;
        min-height: 14rem;
    }
}

.perspective-masthead-rule {
    border-top: 4px solid var(--bs-body-color);
    border-bottom: 4px solid var(--bs-body-color);
}

.perspective-title-rule {
    border-bottom: 2px solid var(--bs-body-color);
}

.perspective-quote-frame {
    border-top: 1px solid rgba(var(--bs-emphasis-color-rgb), 0.2);
    border-bottom: 1px solid rgba(var(--bs-emphasis-color-rgb), 0.2);
    border-left: 4px solid var(--bs-primary);
}

.perspective-headline-hover {
    transition: color 0.2s ease;
}

.perspective-headline-hover:hover {
    color: var(--bs-primary);
}

.perspective-micro-label {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
}

.perspective-byline-suffix {
    font-size: 0.6rem;
    opacity: 0.6;
}

.perspective-quote-text {
    font-size: 1.1rem;
}

.perspective-card-desc {
    font-size: 0.875rem;
}

/* content plain — thin vertical rule height (BS has no h-16 spine utility) */
.content-plain__fine-rule {
    height: 6rem;
}

.timeline-layout__card--hover {
    transition: transform 0.3s ease;
}
.timeline-layout__card--hover:hover {
    transform: scale(1.05);
}

.timeline-layout__img--zoom {
    transition: transform 0.5s ease;
}
.timeline-layout__row:hover .timeline-layout__img--zoom {
    transform: scale(1.1);
}

.timeline-layout__overlay--fade {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.timeline-layout__row:hover .timeline-layout__overlay--fade {
    opacity: 1;
}

.timeline-layout__panel--slide {
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.timeline-layout__row:hover .timeline-layout__panel--slide {
    transform: translateY(0);
}

.timeline-layout__badge--zoom {
    transition: transform 0.3s ease;
}
.timeline-layout__row:hover .timeline-layout__badge--zoom {
    transform: scale(1.25);
}

.timeline-layout__slot {
    width: 3rem;
    height: 3rem;
}

.timeline-layout__badge {
    width: 2rem;
    height: 2rem;
}

.timeline-layout__line {
    width: 0.25rem;
}

.content-col-grow {
    flex: 1 1 0%;
    min-width: 0;
}

.content-img-fill {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 16rem;
    min-width: 0;
    object-fit: cover;
    flex-shrink: 0;
}

.copy-document__text-panel-inset {
    padding: 4rem;
}

.content-flex-min {
    min-width: 0;
}

.content-memo-outline__grid {
    width: 6rem;
    height: 6rem;
    pointer-events: none;
}