.hero-v18-line-a {
    width: 200%;
    transform: rotate(12deg);
    transform-origin: left;
}

.hero-v18-line-b {
    width: 200%;
    transform: rotate(-12deg);
    transform-origin: right;
}

.hero-v18-col-left {
    transform-origin: top left;
}

.hero-v18-dot {
    width: 0.5rem;
    height: 0.5rem;
}

.hero-v18-icon-box {
    width: 2rem;
    height: 2rem;
}

.hero-v18-col-right {
    transform-origin: top right;
}

.hero-v18-decor-tr {
    top: -1rem;
    right: -1rem;
    width: 6rem;
    height: 6rem;
}

.hero-v18-decor-bl {
    bottom: -1rem;
    left: -1rem;
    width: 5rem;
    height: 5rem;
}

/* -- Button hover states -- */
.hero-btn-primary {
    transition: filter 0.2s ease, transform 0.15s ease;
}
.hero-btn-primary:hover,
.hero-btn-primary:focus {
    filter: brightness(1.12);
    transform: translateY(-1px);
}

.hero-btn-outline-secondary {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
.hero-btn-outline-secondary:hover,
.hero-btn-outline-secondary:focus {
    background-color: var(--bs-secondary) !important;
    color: #fff !important;
    border-color: var(--bs-secondary) !important;
    transform: translateY(-1px);
}

.hero-btn-outline-primary-light {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
.hero-btn-outline-primary-light:hover,
.hero-btn-outline-primary-light:focus {
    background-color: var(--bs-primary) !important;
    color: #fff !important;
    border-color: var(--bs-primary) !important;
    transform: translateY(-1px);
}
.origin-image-hover {
    transition: transform 0.3s ease;
}

.origin-image-hover:hover {
    transform: scale(1.05);
}

.timeline-emblem {
    width: 5rem;
    height: 5rem;
}

.timeline-spark {
    width: 0.75rem;
    height: 0.75rem;
}

.timeline-cloud-left {
    width: 16rem;
    height: 16rem;
}

.timeline-cloud-right {
    width: 20rem;
    height: 20rem;
    animation-delay: 1s;
}

.timeline-cloud-center {
    width: 24rem;
    height: 24rem;
    animation-delay: 2s;
}

.timeline-outline-square {
    width: 5rem;
    height: 5rem;
    animation-duration: 3s;
}

.timeline-outline-orb {
    width: 4rem;
    height: 4rem;
    animation-duration: 4s;
    animation-delay: 1s;
}

.timeline-halo-start {
    width: 8rem;
    height: 8rem;
    animation-duration: 20s;
}

.timeline-halo-end {
    width: 10rem;
    height: 10rem;
    animation-duration: 25s;
    animation-direction: reverse;
}

.timeline-spark-side {
    animation-delay: 0.5s;
}

.timeline-spark-center {
    animation-delay: 1s;
}

.timeline-cloud-left,
.timeline-cloud-right,
.timeline-cloud-center {
    animation-name: timeline-cloud__pulse;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.timeline-outline-square,
.timeline-outline-orb {
    animation-name: timeline-outline__bounce;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.timeline-halo-start,
.timeline-halo-end {
    animation-name: timeline-halo__spin;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

.timeline-spark-top,
.timeline-spark-side,
.timeline-spark-center {
    animation-name: timeline-spark__ping;
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    animation-iteration-count: infinite;
}

@keyframes timeline-cloud__pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes timeline-outline__bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-25%); }
}

@keyframes timeline-halo__spin {
    to { transform: rotate(360deg); }
}

@keyframes timeline-spark__ping {
    0% { transform: scale(1); opacity: 1; }
    75%, 100% { transform: scale(2); opacity: 0; }
}


.spark-boost__section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.spark-boost__inner {
    min-height: 500px;
    display: flex;
    align-items: center;
}

@media (min-width: 768px) {
    .spark-boost__inner { min-height: 600px; }
}

/* Bootstrap: как у Tailwind p-sm → md:p-lg → lg:p-xl → xl:p-4xl (без фиксированных 6rem на мобиле) */
.spark-boost__vessel-bs {
    box-sizing: border-box;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .spark-boost__vessel-bs { padding: 1.5rem; }
}

@media (min-width: 992px) {
    .spark-boost__vessel-bs { padding: 2rem; }
}

@media (min-width: 1280px) {
    .spark-boost__vessel-bs { padding: 6rem; }
}

/* Bootstrap: две колонки + стабильный gap (row/g-* часто «съедаются» сбросами) */
.spark-boost__split-grid-bs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .spark-boost__split-grid-bs { gap: 1.5rem; }
}

.spark-boost__split-grid-bs > * {
    flex: 1 1 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

@media (min-width: 992px) {
    .spark-boost__split-grid-bs {
        flex-wrap: nowrap;
    }

    .spark-boost__split-grid-bs > * {
        flex: 1 1 0;
        max-width: 50%;
    }
}

.spark-boost__slab--glass { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

@keyframes spark-boost-highlight-throb-seq {
    0%, 100% { opacity: 1; }
    50%       { opacity: .5; }
}
.spark-boost__highlight--throb {
    animation: spark-boost-highlight-throb-seq 2s cubic-bezier(.4,0,.6,1) infinite;
}

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

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

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