.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);
}
@keyframes floatParticle1 {
    0% { 
        transform: translate(-20px, -20px) scale(0.8);
        opacity: 0.3;
    }
    25% { 
        transform: translate(20px, -30px) scale(1.2);
        opacity: 0.8;
    }
    50% { 
        transform: translate(30px, 20px) scale(0.9);
        opacity: 0.5;
    }
    75% { 
        transform: translate(-10px, 30px) scale(1.1);
        opacity: 0.7;
    }
    100% { 
        transform: translate(-20px, -20px) scale(0.8);
        opacity: 0.3;
    }
}

@keyframes floatParticle2 {
    0% { 
        transform: translate(15px, 15px) scale(1.1);
        opacity: 0.4;
    }
    30% { 
        transform: translate(-25px, 10px) scale(0.7);
        opacity: 0.8;
    }
    60% { 
        transform: translate(-15px, -25px) scale(1.3);
        opacity: 0.3;
    }
    90% { 
        transform: translate(20px, -15px) scale(0.9);
        opacity: 0.6;
    }
    100% { 
        transform: translate(15px, 15px) scale(1.1);
        opacity: 0.4;
    }
}

@keyframes floatParticle3 {
    0% { 
        transform: translate(0px, 0px) scale(0.8);
        opacity: 0.2;
    }
    25% { 
        transform: translate(30px, -20px) scale(1.2);
        opacity: 0.6;
    }
    50% { 
        transform: translate(-20px, 30px) scale(0.9);
        opacity: 0.4;
    }
    75% { 
        transform: translate(-30px, -10px) scale(1.1);
        opacity: 0.7;
    }
    100% { 
        transform: translate(0px, 0px) scale(0.8);
        opacity: 0.2;
    }
}

@keyframes floatParticle4 {
    0% { 
        transform: translate(-10px, -10px) scale(1.3);
        opacity: 0.5;
    }
    40% { 
        transform: translate(25px, 15px) scale(0.6);
        opacity: 0.8;
    }
    80% { 
        transform: translate(-15px, 25px) scale(1.4);
        opacity: 0.3;
    }
    100% { 
        transform: translate(-10px, -10px) scale(1.3);
        opacity: 0.5;
    }
}

@keyframes floatParticle5 {
    0% { 
        transform: translate(20px, 20px) scale(0.9);
        opacity: 0.3;
    }
    35% { 
        transform: translate(-30px, 20px) scale(1.3);
        opacity: 0.7;
    }
    70% { 
        transform: translate(20px, -30px) scale(0.7);
        opacity: 0.4;
    }
    100% { 
        transform: translate(20px, 20px) scale(0.9);
        opacity: 0.3;
    }
}

@keyframes floatParticle6 {
    0% { 
        transform: translate(-15px, -15px) scale(1.0);
        opacity: 0.4;
    }
    50% { 
        transform: translate(20px, -25px) scale(0.8);
        opacity: 0.8;
    }
    100% { 
        transform: translate(-15px, -15px) scale(1.0);
        opacity: 0.4;
    }
}

.profile-float-icon {
    top: -3rem;
    right: -2rem;
}

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

.profile-bounce {
    animation: bounce-kf 1s infinite;
}

.profile-card-hover,
.profile-icon-hover,
.profile-copy-hover,
.profile-underline,
.profile-cta-hover {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.profile-feature-group:hover .profile-card-hover {
    transform: scale(1.05);
}

.profile-feature-group:hover .profile-overlay-hover {
    opacity: 0.2 !important;
}

.profile-feature-group:hover .profile-icon-hover {
    transform: scale(1.1);
}

.profile-feature-group:hover .profile-copy-hover {
    transform: translateY(0.25rem);
}

.profile-underline {
    height: 0.25rem;
    transform: scaleX(0);
    transform-origin: center;
}

.profile-description-group:hover .profile-underline {
    transform: scaleX(1);
}

@keyframes ping-kf {
    75%, 100% {
        transform: scale(1.1);
        opacity: 0;
    }
}

.profile-ping {
    animation: ping-kf 1.2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.profile-cta-hover:hover {
    transform: scale(1.05);
}

.profile-particle-1 {
    top: 10%;
    left: 15%;
    animation: floatParticle1 8s ease-in-out infinite;
}

.profile-particle-2 {
    top: 20%;
    right: 20%;
    animation: floatParticle2 10s ease-in-out infinite;
    animation-delay: 1s;
}

.profile-particle-3 {
    top: 60%;
    left: 10%;
    animation: floatParticle3 12s ease-in-out infinite;
    animation-delay: 3s;
}

.profile-particle-4 {
    top: 80%;
    right: 15%;
    animation: floatParticle4 7s ease-in-out infinite;
    animation-delay: 2s;
}

.profile-particle-5 {
    top: 40%;
    left: 80%;
    animation: floatParticle5 9s ease-in-out infinite;
    animation-delay: 4s;
}

.profile-particle-6 {
    top: 70%;
    left: 60%;
    animation: floatParticle6 11s ease-in-out infinite;
    animation-delay: 1.5s;
}

.profile-sq-16 { width: 4rem;    height: 4rem;    flex-shrink: 0; }
.profile-sq-12 { width: 3rem;    height: 3rem;    flex-shrink: 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; }