@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;
}

/* Hover — поза @sem */
.services__tile--lift {
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.services__tile--lift:hover {
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

@media (min-width: 640px) {
  .services__tile--lift:hover {
    transform: scale(1.05);
  }
}

.services__cta--lift {
  transition: filter 0.2s ease, transform 0.2s ease;
}

@media (min-width: 640px) {
  .services__cta--lift:hover {
    transform: scale(1.05);
  }
}

.services__cta--lift:hover {
  filter: brightness(0.92);
}

.features-deck {
    position: relative;
    height: 340px;
}

.features-deck__card {
    position: absolute;
    inset: 0;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.4s ease;
}

.features-deck .feat-card-hover:hover {
    transform: none;
    box-shadow: none !important;
}

.features-deck__card[data-offset="0"] {
    transform: translateY(0) scale(1);
    opacity: 1;
    z-index: 5;
}

.features-deck__card[data-offset="1"] {
    transform: translateY(14px) scale(0.97);
    opacity: 0.6;
    z-index: 4;
}

.features-deck__card[data-offset="2"] {
    transform: translateY(25px) scale(0.94);
    opacity: 0.38;
    z-index: 3;
}

.features-deck__card[data-offset="3"] {
    transform: translateY(33px) scale(0.91);
    opacity: 0.18;
    z-index: 2;
}

.features-deck__card[data-offset="hidden"] {
    transform: translateY(-10px) scale(1.01);
    opacity: 0;
    z-index: 1;
    pointer-events: none;
}

@keyframes features-deck-pulse-kf {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}

@keyframes features-deck-spin-kf {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes features-deck-bounce-kf {
    0%, 100% { transform: translateY(-25%); animation-timing-function: cubic-bezier(0.8,0,1,1); }
    50% { transform: none; animation-timing-function: cubic-bezier(0,0,0.2,1); }
}

.features-deck__decor--pulse {
    filter: blur(48px);
    animation: features-deck-pulse-kf 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.features-deck__decor--spin {
    animation: features-deck-spin-kf 1s linear infinite;
}

.features-deck__decor--bounce {
    transform: rotate(12deg);
    animation: features-deck-bounce-kf 1s infinite;
}

.features-deck__decor--line {
    transform: rotate(-12deg);
}

.features-deck__decor--rotate-12 {
    transform: rotate(12deg);
}

.features-deck__decor--rotate-minus-6 {
    transform: rotate(-6deg);
}

.features-deck__btn--hover:hover {
    transform: scale(1.05);
}

/* -- 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-deck__decor--bs-blob {
    width: 16rem;
    height: 16rem;
    background-color: var(--bs-primary-bg-subtle);
    opacity: 0.35;
    filter: blur(48px);
}
.features-deck__decor--bs-shape {
    opacity: 0.15;
}
.features-deck__decor--bs-line {
    border-left: 1px solid var(--bs-primary-border-subtle);
    opacity: 0.2;
}
/* v24 - ascending staircase offsets (per-index transform has no TW/BS utility) */
.climb-tier__badge {
    width: 2.75rem;
    height: 2.75rem;
}

@media (min-width: 640px) {
    [data-stair-step] {
        transition: transform 200ms ease;
    }

    [data-stair-step="0"] {
        transform: translateX(0);
    }

    [data-stair-step="1"] {
        transform: translateX(1.5rem);
    }

    [data-stair-step="2"] {
        transform: translateX(3rem);
    }

    [data-stair-step="3"] {
        transform: translateX(4.5rem);
    }

    [data-stair-step="4"] {
        transform: translateX(6rem);
    }
}

/* Block: advantages-accordion-numbered — panel collapse (JS sets max-height) */
.advantages-accordion-numbered__panel-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}