/* Фирменные цвета Spaif из логотипа */
:root {
    /* Цветовая палитра бренда */
    --spaif-red: #FF1A1A;
    --spaif-yellow: #FFD600; /* Адаптированный желтый для читаемости */
    --spaif-green: #00E640;
    --spaif-blue: #00BFFF;

    /* Фоны и тексты для светлой темы */
    --bg-color: #F8FAFC;         /* Очень светло-серый фон (почти белый) */
    --bg-white: #FFFFFF;         /* Белый фон для секций-чередований */
    --text-dark: #1E293B;        /* Темно-синий/почти черный для заголовков */
    --text-muted: #64748B;       /* Серый текст для параграфов */
    
    /* Шрифты */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background-color: var(--bg-color);
    color: var(--text-muted);
    font-family: var(--font-main);
    overflow: hidden; 
}

/* Декоративные мягкие круги на фоне (очень прозрачные в светлой теме) */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    z-index: -1;
    pointer-events: none;
    transition: all 1s ease;
}
.shape-1 { top: -10%; left: -5%; width: 40vw; height: 40vw; background: rgba(0, 166, 230, 0.15); }
.shape-2 { bottom: -10%; right: -5%; width: 40vw; height: 40vw; background: rgba(250, 62, 62, 0.1); }

/* Вертикальный скролл со снаппингом */
.presentation {
    height: 100vh;
    overflow-y: scroll;
    overflow-x: hidden; /* Жестко отсекаем вылет анимаций за край экрана на мобильных */
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}
.presentation::-webkit-scrollbar { width: 6px; }
.presentation::-webkit-scrollbar-track { background: transparent; }
.presentation::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 10px; }

.slide {
    scroll-snap-align: start;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 6rem 2rem 2rem; /* Смещение вниз для учета шапки */
    width: 100%;
}

.bg-white { background-color: var(--bg-white); }

.container { max-width: 1200px; width: 100%; margin: 0 auto; z-index: 10; }

/* Навигация точками */
.slider-nav { position: fixed; right: 30px; top: 50%; transform: translateY(-50%); z-index: 100; }
.slider-nav ul { list-style: none; display: flex; flex-direction: column; gap: 15px; }
.nav-dot {
    display: block; width: 10px; height: 10px; border-radius: 50%;
    background: #CBD5E1; transition: all 0.3s ease; cursor: pointer;
}
.nav-dot.active { background: var(--spaif-blue); transform: scale(1.3); box-shadow: 0 0 10px rgba(0, 166, 230, 0.3); }

/* --- ИКОНКИ LUCIDE --- */
.lucide { vertical-align: middle; }
.icon-sm { width: 18px; height: 18px; margin-right: 6px; }
.icon-md { width: 24px; height: 24px; margin-right: 8px; }
.icon-lg { width: 32px; height: 32px; margin-bottom: 8px; }
.icon-xl { width: 48px; height: 48px; }

/* Утилиты */
.text-decoration-line-through { text-decoration: line-through; }
.fw-normal { font-weight: 400; }
.fw-bold { font-weight: 700; }
.text-right { text-align: right; }
.gap-3 { gap: 1rem; }
.flex-shrink-0 { flex-shrink: 0; }
.border-radius-lg { border-radius: 16px; }
.position-absolute { position: absolute; }
.position-relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.align-items-center { align-items: center; }
.flex-column { flex-direction: column; }
.m-0 { margin: 0; }
.p-0 { padding: 0; }

/* Типографика */
h1 { font-size: 3.8rem; line-height: 1.1; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1.5rem; }
h2 { font-size: 2.8rem; line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; font-weight: 600; margin-bottom: 1rem; color: var(--text-dark); }
p { font-size: 1.1rem; line-height: 1.6; }

.text-dark { color: var(--text-dark); }
.text-red { color: var(--spaif-red); }
.text-yellow { color: var(--spaif-yellow); text-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.text-green { color: var(--spaif-green); }
.text-blue { color: var(--spaif-blue); }

.bg-red-light { background: rgba(255, 26, 26, 0.1); }
.bg-yellow-light { background: rgba(255, 214, 0, 0.15); }
.bg-green-light { background: rgba(0, 230, 64, 0.1); }
.bg-blue-light { background: rgba(0, 191, 255, 0.1); }

.subtitle { font-size: 1.25rem; color: var(--text-muted); max-width: 800px; margin: 0 auto; line-height: 1.5; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2.5rem; }
.mt-5 { margin-top: 4rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2.5rem; }
.mb-5 { margin-bottom: 4rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Бренд-текст с 4 цветами Spaif (линейный градиент) */
.brand-text {
    background: linear-gradient(90deg, var(--spaif-red), var(--spaif-yellow), var(--spaif-green), var(--spaif-blue));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Карточки для светлой темы */
.card {
    background: #FFFFFF;
    border: 1px solid rgba(0,0,0,0.04);
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    border-radius: 24px;
    padding: 2.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }

/* Цветовые ховеры карточек */
.hover-red:hover { border-color: rgba(255, 26, 26, 0.3); }
.hover-yellow:hover { border-color: rgba(255, 214, 0, 0.4); }
.hover-blue:hover { border-color: rgba(0, 191, 255, 0.3); }
.outline-card { border: 1px solid rgba(0, 166, 230, 0.2); }

/* Тени */
.shadow-md { box-shadow: 0 10px 25px rgba(0,0,0,0.04); }
.shadow-lg { box-shadow: 0 20px 40px rgba(0,0,0,0.08); border: none; }
.shadow-xl { box-shadow: 0 25px 50px rgba(0,0,0,0.1); border: none; }
.shadow-none { box-shadow: none; }
.border-green { border: 2px solid var(--spaif-green); }
.border-brand-top { border-top: 4px solid var(--spaif-blue); }

.bg-gray { background: #F1F5F9; }

/* Кнопки */
.btn-primary {
    display: inline-flex;
    align-items: center; justify-content: center;
    background: var(--text-dark);
    color: #FFF;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 10px 20px rgba(0,0,0,0.15); background: #000; }
.btn-secondary {
    display: inline-flex; align-items: center; justify-content: center;
    background: transparent; color: var(--text-dark);
    padding: 1rem 2.5rem; border-radius: 50px; font-weight: 600; font-size: 1.1rem;
    text-decoration: none; border: 1px solid #CBD5E1; transition: all 0.3s ease;
}
.btn-secondary:hover { background: #F1F5F9; border-color: var(--text-dark); }
.btn-large { padding: 1.2rem 3rem; font-size: 1.2rem; margin: 0 10px; }
.btn-sm { padding: 0.6rem 1.5rem; font-size: 0.95rem; }

/* Бейджи */
.badge {
    display: inline-flex; align-items: center;
    padding: 8px 16px; background: #FFFFFF;
    border: 1px solid #E2E8F0; border-radius: 30px;
    font-size: 0.9rem; font-weight: 600; margin-bottom: 1.5rem; color: var(--spaif-blue);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

/* Лейауты сетки */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: stretch; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.hero-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem; align-items: center; }
.reverse-layout { grid-template-columns: 0.9fr 1.1fr; }

/* Иконки в кругу */
.icon-circle {
    width: 60px; height: 60px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.5rem;
}
.icon-circle i { width: 28px; height: 28px; }

/* Блоки с цифрами */
.stat-value { font-size: 3.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 0.5rem; }
.stat-label { font-size: 1.2rem; font-weight: 600; color: var(--text-dark); margin-bottom: 0.5rem; }
.stat-desc { font-size: 0.95rem; line-height: 1.5; margin: 0; }

/* Баннеры */
.banner { display: flex; align-items: center; gap: 1.5rem; padding: 2rem; }
.banner-with-image { justify-content: space-between; gap: 2rem; }
.banner-left { display: flex; align-items: center; gap: 1.5rem; }
.banner-image { width: 160px; height: 100px; border-radius: 12px; overflow: hidden; position: relative; flex-shrink: 0; border: 1px dashed #CBD5E1; background: #FFF; display: flex; align-items: center; justify-content: center; }
.banner-image img { width: 100%; height: 100%; object-fit: cover; position: absolute; top:0; left:0; z-index: 2; }
.horizontal-image-placeholder { width: 100%; height: 160px; border-radius: 16px; overflow: hidden; position: relative; border: 1px dashed #CBD5E1; background: #F8FAFC; display: flex; align-items: center; justify-content: center; margin-bottom: 24px; box-shadow: inset 0 2px 5px rgba(0,0,0,0.02); }
.horizontal-image-placeholder img { width: 100%; height: 100%; object-fit: cover; position: absolute; top:0; left:0; z-index: 2; }
.mini-placeholder { flex-direction: column; padding: 0.5rem; text-align: center; line-height: 1.2; background: transparent; }

/* Блок масштабирования */
.bg-gradient-light {
    background: linear-gradient(135deg, #FFFFFF, #F8FAFC);
}
.scale-grid { align-items: stretch; margin-top: 2rem;}
.list-item { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 5px; }
.list-item .label { color: #64748B; line-height: 1.4; flex: 1; }
.list-item .value { font-weight: 700; font-size: 1.1rem; text-align: right; white-space: nowrap; flex-shrink: 0; }
.list-item.align-center { align-items: center; }

.total-revenue-card { background: #FFFFFF; border-radius: 16px; padding: 2rem; position: relative; }
.revenue-title { font-size: 1.1rem; color: var(--text-dark); font-weight: 600; display: block; }

.calc-stats-card { display: flex; flex-direction: column; justify-content: center; }
.calc-stats-card .stat-group { margin-bottom: 0px; }
.calc-stats-card .stat-label { color: #64748B; font-size: 0.95rem; display: block; margin-bottom: 0.4rem; }
.calc-stats-card .stat-value { font-size: 1.6rem; font-weight: 800; display: block; white-space: nowrap; letter-spacing: -0.5px;}

.revenue-big { font-size: 2.8rem; font-weight: 900; margin: 15px 0; color: var(--spaif-blue); white-space: nowrap; display: flex; align-items: baseline; justify-content: center; gap: 8px;}
.ruble-symbol { font-size: 1.6rem; font-weight: 700; color: var(--spaif-blue); }
.revenue-year { font-size: 1rem; color: var(--text-dark); font-weight: 500; }

/* Таблица сравнения */
.comparison-card { overflow: hidden; }
.comparison-header { padding: 1.5rem 2rem; font-size: 1.3rem; font-weight: 700; text-align: center; display:flex; align-items:center; justify-content:center;}
.traditional-header { background: rgba(250, 62, 62, 0.05); color: var(--spaif-red); border-bottom: 1px solid rgba(250, 62, 62, 0.1); }
.spaif-header { background: rgba(16, 185, 129, 0.05); color: var(--spaif-green); border-bottom: 1px solid rgba(16, 185, 129, 0.1); }
.comparison-list { list-style: none; padding: 2rem; }
.comparison-list li { padding: 1rem 0; font-size: 1.1rem; border-bottom: 1px solid #E2E8F0; }
.comparison-list li:last-child { border-bottom: none; }

/* Списки преимуществ */
.benefits-list { list-style: none; }
.benefits-list li { display: flex; font-size: 1.2rem; margin-bottom: 1.5rem; gap: 1rem; align-items: flex-start; }
.benefits-list .bullet { 
    width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; margin-top: 2px;
}

/* Рамки для изображений оборудования пользователя */
.image-container {
    width: 100%; aspect-ratio: 4/5;
    background: #FFFFFF; border: 1px dashed #CBD5E1; border-radius: 30px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden; position: relative; box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.image-container.phone-mockup { aspect-ratio: 9/16; max-width: 400px; margin: 0 auto; border-radius: 40px;}
.user-img { width: 100%; height: 100%; object-fit: cover; position: absolute; top:0; left:0; z-index: 2;}
.img-placeholder { 
    text-align: center; color: var(--text-muted); font-size: 1rem; line-height: 1.6;
    display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; height: 100%;
    padding: 2rem; background: #F8FAFC;
}
.img-placeholder b { color: var(--text-dark); font-weight: 500; display:block; margin-top: 5px;}

/* --- КАЛЬКУЛЯТОР --- */
.calculator-wrap { max-width: 900px; margin: 0 auto; }
.range-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 20px; font-weight: 600; font-size: 1.2rem;}
.range-value { font-size: 2.2rem; font-weight: 800; }
.custom-range {
    -webkit-appearance: none; appearance: none; width: 100%; height: 12px;
    background: #E2E8F0; border-radius: 10px; outline: none; margin: 10px 0;
    cursor: pointer; position: relative;
}
.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--spaif-blue); cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 191, 255, 0.4);
    border: 5px solid #FFF; transition: transform 0.1s ease;
}
.custom-range::-webkit-slider-thumb:hover { transform: scale(1.1); }
.custom-range::-webkit-slider-thumb:active { transform: scale(1.2); cursor: grabbing;}

.custom-range::-moz-range-thumb {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--spaif-blue); cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 191, 255, 0.4);
    border: 5px solid #FFF;
}
.range-ticks { display: flex; justify-content: space-between; font-size: 0.95rem; font-weight: 500;}
.text-sm { font-size: 0.85rem;}
.my-3 { margin-top: 1rem; margin-bottom: 1rem; }
.p-4 { padding: 1.5rem !important; }
.border-0 { border: none !important; }

/* Шапка */
.fixed-header {
    position: fixed; top: 0; left: 0; right: 0;
    background: rgba(248, 250, 252, 0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05); z-index: 1000; padding: 1rem 0;
}
.header-container {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: flex; justify-content: space-between; align-items: center;
}
.header-logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-text { font-size: 1.5rem; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }

/* Логотип 4х4 Сетка (устойчивая) */
.logo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; width: 28px; height: 28px; }
.logo-grid-large { width: 44px; height: 44px; gap: 4px; margin-right: 15px; }
.logo-grid div { border-radius: 50%; }
.dot-y { background: var(--spaif-yellow); }
.dot-g { background: var(--spaif-green); }
.dot-r { background: var(--spaif-red); }
.dot-b { background: var(--spaif-blue); }
.logo-b { background: var(--spaif-blue); }
.spaif-logo-container { display: flex; align-items: center; justify-content: center; flex-direction: column; }
.logo-text-dark { font-size: 2.5rem; font-weight: 800; color: var(--text-dark); }

.custom-logo-header { height: 36px; width: auto; object-fit: contain; }
.custom-logo-footer { height: 72px; width: auto; object-fit: contain; }

.footer-links p { color: #94A3B8; font-size: 0.9rem;}

/* --- АНИМАЦИИ --- */
.animate { opacity: 0; transition: all 1s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-up { transform: translateY(40px); }
.fade-left { transform: translateX(60px); }
.fade-right { transform: translateX(-60px); }
.pulse { transform: scale(0.95); }

.in-view .animate { opacity: 1; transform: translate(0, 0) scale(1); }
.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }
.delay-4 { transition-delay: 0.8s; }

/* Горизонтальная плашка выгоды с огибанием */
.corner-ribbon {
    position: absolute;
    top: -10px;
    right: -12px;
    background: linear-gradient(135deg, var(--spaif-green), #05c43d);
    color: #FFF;
    padding: 12px 24px;
    border-radius: 12px 0 0 12px;
    font-size: 1.1rem;
    font-weight: 800;
    box-shadow: -5px 10px 20px rgba(0,230,64,0.3);
    z-index: 20;
    display: flex;
    align-items: center;
    animation: ribbon-pulse 2.5s infinite ease-in-out;
}
.corner-ribbon::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 0;
    border-top: 12px solid #00a82e;
    border-right: 12px solid transparent;
}
@keyframes ribbon-pulse {
    0% { transform: scale(1) translateX(0); }
    50% { transform: scale(1.05) translateX(-5px); box-shadow: -8px 15px 25px rgba(0,230,64,0.4); }
    100% { transform: scale(1) translateX(0); }
}
.d-inline-flex { display: inline-flex; }

/* --- ФОН И ГЕО-МЕТКИ (Слайд 8) --- */
.map-bg-layer {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    /* Назовите файл с картой city_map_bg.jpg и положите в папку */
    background: url('city_map_bg.jpg') center/cover no-repeat;
    opacity: 0.3; /* полупрозрачность для текста */
    z-index: 1;
    pointer-events: none;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 20%, rgba(0,0,0,1) 80%, rgba(0,0,0,0) 100%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 20%, rgba(0,0,0,1) 80%, rgba(0,0,0,0) 100%);
}

.geo-marker {
    position: absolute;
    z-index: 2;
}

.geo-float {
    display: flex; align-items: center; justify-content: center;
    position: relative;
    /* Разделяем float и scale анимации */
    animation: float-marker 4s infinite ease-in-out;
}
.geo-float i { color: currentColor; position: relative; z-index: 2; }

.pulse-ring {
    position: absolute;
    left: 50%;
    bottom: -15px; /* Сдвигаем вниз на кончик пина (icon-sm = 20px, pulse-ring = 30px) */
    margin-left: -15px; /* Центрируем кольцо (30/2 = 15) */
    width: 30px; height: 30px;
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
    animation: ping-marker 3.5s infinite cubic-bezier(0, 0, 0.2, 1);
    z-index: 1;
}

/* Более спокойные пульсации */
.bg-blue { background-color: var(--spaif-blue); }
.bg-red { background-color: var(--spaif-red); }
.bg-green { background-color: var(--spaif-green); }
.bg-yellow { background-color: var(--spaif-yellow); }

@keyframes float-marker {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
@keyframes ping-marker {
    0% { transform: scale(0.2); opacity: 0.35; }
    80%, 100% { transform: scale(1.6); opacity: 0; }
}

/* Мобильная версия */
@media (max-width: 992px) {
    h1 { font-size: 2.8rem; } h2 { font-size: 2.2rem; }
    .hero-layout, .reverse-layout { grid-template-columns: 1fr; gap: 3rem; }
    .reverse-layout .image-container { grid-row: 1; }
    .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 1.5rem;}
    .slide { min-height: auto; padding: 7rem 1.5rem 2rem; }
    .presentation { scroll-snap-type: none; overflow-y: auto;}
    .slider-nav { display: none; }
    .btn-large { display: block; margin: 10px 0; }
    .banner-with-image { flex-direction: column; align-items: flex-start; }
    .banner-image { width: 100%; height: 160px; }
}
@media (max-width: 576px) {
    /* Глобальный фикс скролла и отступов */
    body, html { overflow-x: hidden; width: 100%; }
    
    h1 { font-size: 2rem !important; } 
    h2 { font-size: 1.6rem !important; line-height: 1.2 !important; }
    h3 { font-size: 1.3rem !important; }
    p, .subtitle { font-size: 0.95rem !important; }
    
    /* Сокращаем отступы слайдов для экономии места на экране, но оставляем 6rem сверху под шапку! */
    .slide { padding: 6rem 1rem 2rem !important; }
    
    /* Устраняем боковые вылеты плашки и огромные паддинги карточек */
    .card { padding: 1.5rem 1.2rem !important; border-radius: 1rem !important; }
    .card.p-5 { padding: 1.5rem 1.2rem !important; }
    
    .corner-ribbon { 
        right: -8px; 
        top: -12px; 
        font-size: 13px !important; 
        padding: 6px 14px !important; 
        border-radius: 6px !important;
        white-space: normal;
        max-width: 85%;
        text-align: right;
    }
    .corner-ribbon::after { border-width: 4px; right: 0; bottom: -4px; }
    
    /* Уменьшаем шрифты главных цифр и решаем проблему переполнения Safari */
    .revenue-big { font-size: 2.2rem !important; white-space: normal !important; }
    .ruble-symbol { font-size: 1.8rem !important; }
    
    /* Фичи для карточек с ценами (Убираем nowrap, чтобы текст не разрывал экран) */
    .list-item { flex-direction: column; gap: 4px; }
    .list-item .value { white-space: normal !important; text-align: left !important; }
    
    /* Фиксы кнопок и инпутов */
    .btn-large { padding: 0.9rem 1rem !important; font-size: 0.9rem !important; }
    .btn-large i { width: 18px; height: 18px; }
    .calc-control { padding: 1.5rem 1rem !important; }
    
    /* Компактный вывод результатов калькулятора */
    .calc-stats-card .stat-group { flex-direction: column !important; align-items: flex-start !important; gap: 0.3rem; }
    .stat-label { font-size: 0.85rem !important; }
    .stat-value { font-size: 1.4rem !important; }
}

/* Фон для слайда 5: делаем его явно более серым, чтобы белая карточка калькулятора выделялась */
.bg-light-alt {
    background-color: #f1f5f9 !important;
}
#slide-5 .bg-gradient-light {
    background: #ffffff !important;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05) !important;
}