@keyframes driftLeftRight {
    0% { transform: translateX(-15%); }
    50% { transform: translateX(15%); }
    100% { transform: translateX(-15%); }
}

@keyframes driftRightLeft {
    0% { transform: translateX(15%); }
    50% { transform: translateX(-15%); }
    100% { transform: translateX(15%); }
}

.intro-drift-strip-a {
    width: 33%;
    height: 6rem;
    animation: driftLeftRight 14s ease-in-out infinite;
}

.intro-drift-strip-b {
    width: 50%;
    height: 4rem;
    animation: driftRightLeft 18s ease-in-out infinite;
}

.intro-drift-strip-c {
    width: 25%;
    height: 5rem;
    animation: driftLeftRight 12s ease-in-out infinite;
    animation-delay: 3s;
}

.intro-drift-container {
    max-width: 80rem;
}

.intro-drift-textbox {
    max-width: 48rem;
}

/* No custom CSS needed for this version */

/* -- Feature card hover -- */
.feat-card-hover {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.feat-card-hover:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1.5rem rgba(0,0,0,.12) !important;
}

/* -- Icon box sizing -- */
.feat-icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    min-width: 2.5rem;
    min-height: 2.5rem;
}
.feat-icon-box--lg {
    width: 4rem;
    height: 4rem;
    border-radius: 0.75rem;
}
.feat-icon-box--xl {
    width: 5rem;
    height: 5rem;
    border-radius: 1rem;
}
.feat-icon-box--circle {
    border-radius: 50%;
}

/* -- Nav/filmstrip button hover -- */
.feat-btn-nav {
    transition: transform 0.15s ease, background-color 0.15s ease;
}
.feat-btn-nav:hover {
    transform: scale(1.1);
}

/* -- Table row hover -- */
.feat-table-row-hover {
    transition: background-color 0.15s ease;
}
.feat-table-row-hover:hover {
    background-color: var(--bs-primary-bg-subtle) !important;
}

/* -- Accordion item hover -- */
.feat-accordion-hover summary:hover {
    background-color: var(--bs-primary-bg-subtle);
    border-radius: 0.75rem;
}

/* -- DL item hover -- */
.feat-dl-item-hover {
    transition: background-color 0.15s ease;
    border-radius: 0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}
.feat-dl-item-hover:hover {
    background-color: var(--bs-primary-bg-subtle);
}

/* -- Deck button hover -- */
.feat-deck-btn {
    transition: filter 0.2s ease, transform 0.15s ease;
}
.feat-deck-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}
.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;
}

.manuscript-bodycopy__text-panel-inset {
    padding: 4rem;
}

/* v21 editorial — vertical sidebar title */
.perks-editorial-aside__sidebar {
    width: 3rem;
    flex-shrink: 0;
}

.perks-editorial-aside__title-wrap {
    position: sticky;
    top: 6rem;
    height: calc(100vh - 8rem);
    max-height: 32rem;
}

.perks-editorial-aside__h2 {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    white-space: nowrap;
}

.perks-editorial-aside__rule {
    min-height: 2rem;
    flex: 1 1 auto;
    width: 1px;
}

/* numbered item — prevent selection */
.perks-editorial-aside__num {
    user-select: none;
    -webkit-user-select: none;
    min-width: 3.5rem;
}

/* mobile: stack layout, show h2 horizontally */
@media (max-width: 767px) {
    .perks-editorial-aside__sidebar {
        width: 100%;
    }

    .perks-editorial-aside__title-wrap {
        position: static;
        height: auto;
        flex-direction: row !important;
        align-items: center;
        justify-content: flex-start;
    }

    .perks-editorial-aside__h2 {
        writing-mode: horizontal-tb;
        transform: none;
        white-space: normal;
    }

    .perks-editorial-aside__rule {
        display: none;
    }
}

.masonry-offset-cards-quote__track {
    display: grid;
    width: 100%;
    grid-template-columns: minmax(0, 1fr);
    min-width: 0;
    gap: 2rem;
}

@media (min-width: 768px) {
    .masonry-offset-cards-quote__track {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 2.25rem 1.5rem;
    }
}

@media (min-width: 1024px) {
    .masonry-offset-cards-quote__track {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 2.5rem 1.5rem;
    }
}

.masonry-offset-cards-quote__col {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.masonry-offset-cards-quote__surface {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 0;
    flex: 1 1 auto;
}

@media (min-width: 768px) {
    .masonry-offset-cards-quote__surface {
        gap: 1.25rem;
    }
}

/* FAQ v15 — CSS flip card mechanics for Bootstrap branch */
.faq-flip__card-outer {
    perspective: 1000px;
    min-height: 12rem;
}

.faq-flip__card-inner {
    transform-style: preserve-3d;
    transition: transform 0.7s ease;
}

.faq-flip__card-outer:hover .faq-flip__card-inner {
    transform: rotateY(180deg);
}

.faq-flip__face {
    backface-visibility: hidden;
}

.faq-flip__face--back {
    transform: rotateY(180deg);
}