.intro-split-gradient__col-left {
    flex: 1 1 60%;
}

.intro-split-gradient__skew-decor {
    width: 8rem;
}

.intro-split-gradient__content-area {
    max-width: 42rem;
}

.intro-split-gradient__text-box {
    max-width: 36rem;
}

.intro-split-gradient__col-right {
    flex: 1 1 40%;
    display: flex;
    flex-direction: column;
    min-height: 0;
    align-self: stretch;
}

.intro-split-gradient__media-frame {
    flex: 1 1 auto;
    position: relative;
    overflow: hidden;
    /* Завжди є «коробка» для absolute img (BS Reboot: img height:auto ламає h-100 у порожнього батька) */
    min-height: 16rem;
    aspect-ratio: 4 / 3;
}

/* Перебиваємо Bootstrap reboot для img */
.intro-split-gradient__media-frame > img.intro-split-gradient__media-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    z-index: 0;
}

@media (min-width: 992px) {
    /* Права смуга на всю висоту в’юпорту — тоді flex-grow має від чого рахувати */
    .intro-split-gradient__col-right {
        min-height: 100vh;
        min-height: 100dvh;
    }

    .intro-split-gradient__media-frame {
        flex: 1 1 0;
        width: 100%;
        min-height: min(50vh, 24rem);
        max-height: none;
        aspect-ratio: auto;
    }

    .intro-split-gradient__media-frame > img.intro-split-gradient__media-img {
        height: 100%;
    }
}

.intro-split-gradient__media-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


.content-ledger__stem {
    height: 4rem;
    transform: translateX(-50%);
}

/* About v10 — tab visibility and active state (no palette in CSS) */

.guide-sq-8  { width: 2rem;   height: 2rem;   flex-shrink: 0; }
.guide-sq-12 { width: 3rem;   height: 3rem;   flex-shrink: 0; }
.guide-sq-16 { width: 4rem;   height: 4rem;   flex-shrink: 0; }
.guide-sq-20 { width: 5rem;   height: 5rem;   flex-shrink: 0; }

.guide-ab10-tab-panel.guide-ab10-tab-panel-hidden {
    display: none;
}

.guide-ab10-tab-btn.guide-ab10-tab-active {
    font-weight: 700;
    transform: translateY(-1px);
}

.guide-ab10-tab-btn.guide-ab10-tab-inactive {
    font-weight: 500;
    opacity: 0.9;
}

/* content gutter — bracket ticks share width */
.content-gutter__tick {
    width: 1px;
}

/* solo column: span full grid / row when second stack hidden */
.content-gutter__lead--span {
    grid-column: 1 / -1;
}

.content-brief__float-square {
    width: 4rem;
    height: 4rem;
}

.content-brief__orbit {
    left: 50%;
    top: 50%;
    width: min(34rem, 78vw);
    height: min(34rem, 78vw);
    transform: translate(-50%, -50%);
    animation: content-brief-orbit 18s linear infinite;
}

.content-brief__float-square--slow {
    animation: content-brief-float-slow 10s ease-in-out infinite;
}

.content-brief__float-square--fast {
    animation: content-brief-float-fast 7s ease-in-out infinite;
}

@keyframes content-brief-float-slow {
    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-8px) rotate(6deg);
    }
}

@keyframes content-brief-float-fast {
    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(8px) rotate(-7deg);
    }
}

@keyframes content-brief-orbit {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.content-grid-gap {
    gap: 2rem;
}

.content-full-frame {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

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

.content-section-pad {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

/* Matches Tailwind flex-1: equal columns on row; avoids shrink-to-content width on Bootstrap */
.content-col-grow {
    flex: 1 1 0%;
    min-width: 0;
}

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


.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;
    }
}

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