@keyframes rotateSquare {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.intro-pattern-overlay {
    background-image: repeating-linear-gradient(45deg, transparent, transparent 20px, currentColor 20px, currentColor 40px);
    opacity: 0.03;
    top: -20%;
    left: -30%;
    width: 100%;
    height: 100%;
    animation: rotateSquare 20s linear infinite;
}

.intro-pattern-content {
    max-width: 56rem;
}

.editorial-product__cart-btn.editorial-product__cart-btn--added {
  opacity: 0.6;
  cursor: not-allowed;
  transform: scale(1);
}

.editorial-product__cta-hover:hover { transform: scale(1.05); transition: transform .2s ease; }

.editorial-product__btn-hover:hover { transform: scale(1.05); transition: transform .2s ease; }

.editorial-product__media-gap {
    margin-bottom: 4rem;
}

.editorial-product__divider-gap {
    margin-bottom: 4rem;
}

.editorial-product__group-gap {
    gap: 4rem;
}

.editorial-product__divider-margin {
    margin-top: 4rem;
    margin-bottom: 4rem;
}

.editorial-product__narrow {
    max-width: 48rem;
}

.editorial-product__cover {
    height: 22rem;
}

.editorial-product__bullet {
    font-size: 0.45rem;
}

.features-timeline__decor--pulse {
    animation: features-timeline-pulse-kf 2s infinite;
}
.features-timeline__decor--bounce {
    animation: features-timeline-bounce-kf 2s infinite;
    transform: rotate(12deg);
}
.features-timeline__decor--spin {
    animation: features-timeline-spin-kf 4s linear infinite;
}
.features-timeline__decor--pulse-small {
    animation: features-timeline-pulse-kf 2s infinite;
}
.features-timeline__item:hover .features-timeline__icon {
    transform: scale(1.1);
    transition: transform 0.25s ease;
}
.features-timeline__item:hover .features-timeline__title {
    color: var(--bs-primary);
}

/* ?? step number (BS mode) ?? */
.features-timeline__num-bs {
    font-size: 1.75rem;
    font-weight: 900;
    line-height: 1;
    color: var(--bs-primary-border-subtle);
    opacity: 0.8;
    min-width: 2.75rem;
    flex-shrink: 0;
    transition: color 0.25s ease, opacity 0.25s ease;
}
.features-timeline__item:hover .features-timeline__num-bs {
    color: var(--bs-primary);
    opacity: 1;
}

@keyframes features-timeline-pulse-kf {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}
@keyframes features-timeline-bounce-kf {
    0%, 100% { transform: translateY(-25%) rotate(12deg); animation-timing-function: cubic-bezier(0.8,0,1,1); }
    50% { transform: none rotate(12deg); animation-timing-function: cubic-bezier(0,0,0.2,1); }
}
@keyframes features-timeline-spin-kf {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* -- 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);
}

/* -- BS-mode decorative shapes � subtle, non-intrusive -- */
.features-decor__bs-blob {
    background-color: var(--bs-primary-bg-subtle);
    opacity: 0.35;
    filter: blur(48px);
}
.features-decor__bs-shape {
    opacity: 0.15;
}
.features-decor__bs-line {
    border-left: 1px solid var(--bs-primary-border-subtle);
    opacity: 0.18;
}

/* ?? v19 timeline connector line ?? */
.features-timeline__connector {
    position: absolute;
    left: 1.75rem;
    top: 1.75rem;
    bottom: 2rem;
    width: 1px;
    background: linear-gradient(to bottom, var(--bs-primary), rgba(var(--bs-primary-rgb), 0.3), transparent);
    pointer-events: none;
}

/* ?? v19 number watermark ?? */
.features-timeline__number {
    left: -0.25rem;
    top: -0.75rem;
    line-height: 1;
    font-size: 3rem;
    font-weight: 900;
    color: var(--bs-border-color);
    opacity: 0.6;
    pointer-events: none;
    user-select: none;
    position: absolute;
    z-index: 0;
}
.card-stack__accent--1 { width: 10rem; height: 10rem; filter: blur(2rem); }
.card-stack__accent--2 { width: 12rem; height: 12rem; filter: blur(2rem); }
.card-stack__accent--3 { width: 8rem; height: 8rem; filter: blur(1.5rem); }
.card-stack__accent--4 { width: 9rem; height: 9rem; filter: blur(2rem); }

.card-stack__title-line--1, .card-stack__title-line--2 {
    width: 5rem; height: 0.125rem; transform: translateY(-50%);
}
.card-stack__title-dot--1 { width: 0.5rem; height: 0.5rem; top: -0.5rem; right: -0.5rem; }
.card-stack__title-dot--2 { width: 0.5rem; height: 0.5rem; bottom: -0.5rem; left: -0.5rem; }

.card-stack__corner--tl { top: -0.5rem; left: -0.5rem; width: 1.5rem; height: 1.5rem; }
.card-stack__corner--tr { top: -0.5rem; right: -0.5rem; width: 1.5rem; height: 1.5rem; }
.card-stack__corner--bl { bottom: -0.5rem; left: -0.5rem; width: 1.5rem; height: 1.5rem; }
.card-stack__corner--br { bottom: -0.5rem; right: -0.5rem; width: 1.5rem; height: 1.5rem; }

.card-stack__corner--fade {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.card-stack__item:hover .card-stack__corner--fade {
    opacity: 1;
}

.card-stack__media--hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.1);
}
.card-stack__item:hover .card-stack__media--hover {
    transform: scale(1.05);
    box-shadow: 0 1rem 3rem rgba(0,0,0,0.2);
}

.card-stack__decor--glow {
    background: radial-gradient(circle at center, rgba(var(--bs-primary-rgb), 0.2), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}
.card-stack__item:hover .card-stack__decor--glow {
    opacity: 1;
}

.card-stack__img--zoom {
    transition: transform 0.5s ease;
}
.card-stack__item:hover .card-stack__img--zoom {
    transform: scale(1.1);
}

.card-stack__overlay--fade {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.card-stack__item:hover .card-stack__overlay--fade {
    opacity: 1;
}

.card-stack__overlay--dark {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.card-stack__item:hover .card-stack__overlay--dark {
    opacity: 1;
}

.card-stack__inner-corner--tl, .card-stack__inner-corner--br {
    width: 4rem; height: 4rem;
}

.card-stack__badge--shadow {
    transition: box-shadow 0.3s ease;
    box-shadow: 0 0.25rem 0.5rem rgba(0,0,0,0.1);
}
.card-stack__item:hover .card-stack__badge--shadow {
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
}

.card-stack__accent-corner--tr { right: 0; width: 2rem; height: 2rem; opacity: 0; transition: opacity 0.3s ease; }
.card-stack__accent-corner--bl { left: 0; width: 2rem; height: 2rem; opacity: 0; transition: opacity 0.3s ease; }
.card-stack__item:hover .card-stack__accent-corner--tr,
.card-stack__item:hover .card-stack__accent-corner--bl {
    opacity: 1;
}

.card-stack__panel--slide {
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.card-stack__item:hover .card-stack__panel--slide {
    transform: translateY(0);
}


.appeal-signup__appeal--shift:hover { transform: scale(1.05); transition: transform .2s ease; }

.appeal-signup__shell--py-4xl {
    padding-top: 6rem;
    padding-bottom: 6rem;
}