body {
    font-family: system-ui;
    background: #f8f9fa;
}

section {
    padding: 80px 0;
}

/* hero */
.hero {
    position: relative;
    height: 100vh;
    /* растягиваем на весь экран */
    color: white;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.video-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* чтобы видео заполняло экран без искажений */
}

.video-bg .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    /* затемнение для читаемости текста */
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 15px;
}


.pp {
    font-size: 20px;
}

/* планшеты */
@media (min-width: 768px) {
    .hero h1 {
        font-size: 44px;
    }

    .hero p {
        font-size: 20px;
    }
}

/* десктоп */
@media (min-width: 1200px) {
    .hero h1 {
        font-size: 50px;
    }

    .hero p {
        font-size: 24px;
    }
}

/* --- */

.price-old {
    text-decoration: line-through;
}

.price-new {
    font-weight: bold;
    font-size: 24px;
}

.price-old {
    text-decoration: line-through;
    font-size: 22px;
}

.price-new {
    font-size: 32px;
    font-weight: 700;
}

.card-block {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.cta {
    background: url(media/trading1.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
    color: white;
    text-align: center;
}

.form-box {
    max-width: 500px;
    margin: auto;
}

.faq li {
    margin-bottom: 20px;
}

.why-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.why-card {
    background: white;
    padding: 35px;
    border-radius: 12px;
    text-align: center;
    height: 100%;
    transition: 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.why-card i {
    font-size: 40px;
    color: #0d6efd;
    margin-bottom: 15px;
    display: block;
}

.why-card h5 {
    margin-bottom: 10px;
    font-weight: 600;
}

.why-card p {
    color: #6c757d;
}

.why-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.audience-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.audience-card {
    background: white;
    padding: 35px;
    border-radius: 12px;
    text-align: center;
    height: 100%;
    transition: 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.audience-card i {
    font-size: 40px;
    color: #0d6efd;
    margin-bottom: 15px;
    display: block;
}

.audience-card h5 {
    margin-bottom: 10px;
    font-weight: 600;
}

.audience-card p {
    color: #6c757d;
}

.audience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.steps-section {
    padding: 80px 0;
    background-color: #DFF2FE;
}

.step-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    position: relative;
    height: 100%;
    transition: 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.step-card i {
    font-size: 42px;
    color: #0d6efd;
    display: block;
    margin-bottom: 15px;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #0d6efd;
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.step-card h5 {
    margin-bottom: 10px;
    font-weight: 600;
}

.step-card p {
    color: #6c757d;
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.faq-section {
    padding: 80px 0;
    background: #DFF2FE;
}

.faq-box {
    max-width: 800px;
    margin: auto;
}

.accordion-item {
    border: none;
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    font-size: 20px;
}

.accordion-button {
    font-weight: 600;
    padding: 20px;
    font-size: 20px;
}

.accordion-body {
    color: #6c757d;
    line-height: 1.6;
}

.final-section {
    padding: 100px 0;
    background: #6E11B0;
    color: white;
    text-align: center;
}

.final-section h2 {
    font-size: 36px;
    font-weight: 700;
}

.final-section p {
    max-width: 700px;
    margin: auto;
}

.final-section .btn {
    padding: 14px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 8px;
}

/* animation */

html {
    scroll-behavior: smooth;
}

.reveal {
    will-change: transform, opacity;
}


.reveal {
    opacity: 0;
    transform: translateY(40px);
}

.reveal.active {
    animation: cardReveal 0.5s ease forwards;
    animation-fill-mode: both;
}

@keyframes cardReveal {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal:nth-child(1) { animation-delay: 0.1s; }
.reveal:nth-child(2) { animation-delay: 0.2s; }
.reveal:nth-child(3) { animation-delay: 0.3s; }
.reveal:nth-child(4) { animation-delay: 0.4s; }
.reveal:nth-child(5) { animation-delay: 0.5s; }
.reveal:nth-child(6) { animation-delay: 0.6s; }