:root {
    --bg-color: #0b0b12;
    --text-color: #ffffff;
    --text-muted: #a0a0b0;
    --primary-color: #3b82f6;
    /* Blue */
    --accent-color: #8b5cf6;
    /* Purple */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-hover: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.1);
    --header-height: 80px;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    border: none;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn--primary:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

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

.btn--white:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--card-border);
    color: var(--text-color);
}

.btn--outline:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

.btn--large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

.btn--small {
    padding: 8px 20px;
    font-size: 0.875rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(11, 11, 18, 0.8);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
}

.header__container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo__icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav__link {
    color: var(--text-muted);
    font-weight: 500;
}

.nav__link:hover {
    color: var(--text-color);
}

/* Hero */
.hero {
    padding-top: 160px;
    padding-bottom: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translate(-50%, 0);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(11, 11, 18, 0) 70%);
    z-index: -1;
}

.hero__title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero__title span {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero__buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.hero__note {
    font-size: 0.875rem;
    color: var(--text-muted);
    opacity: 0.7;
}

/* Section Common */
.section {
    padding: 80px 0;
}

.section__title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section__subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Grids */
.grid {
    display: grid;
    gap: 24px;
}

/* Advantages */
.advantages__grid {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 32px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

.advantage-card__icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.advantage-card__title {
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.advantage-card__text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* How to */
.how-to {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0) 100%);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
    margin-bottom: 40px;
}

.step {
    position: relative;
    padding-top: 20px;
}

.step__number {
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    position: absolute;
    top: -20px;
    left: 0;
    z-index: 0;
}

.step__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.step__text {
    color: var(--text-muted);
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
}

.center-btn {
    text-align: center;
    margin-top: 40px;
}

/* Promo */
.promo {
    padding: 60px 0;
}

.promo__container {
    background: var(--gradient-primary);
    border-radius: 24px;
    padding: 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.promo__title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.promo__text {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* Pricing */
.pricing__grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
    /* Center vertically so prominent card can be taller */
}

.pricing-card {
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular,
.pricing-card.best-value {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
    transform: scale(1.05);
    z-index: 2;
}

.pricing-card.popular:hover,
.pricing-card.best-value:hover {
    transform: scale(1.08) translateY(-5px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.15);
}

.badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
}

.pricing-card__title {
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 700;
}

.pricing-card__price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 4px;
    color: var(--primary-color);
}

.pricing-card.popular .pricing-card__price,
.pricing-card.best-value .pricing-card__price {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}


.pricing-card__price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    -webkit-text-fill-color: var(--text-muted);
}

.pricing-card__total {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.pricing-card__save {
    color: #4ade80;
    /* Green */
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.pricing-card__features {
    text-align: left;
    margin-bottom: 32px;
    flex-grow: 1;
    /* Push button down */
}

.pricing-card__features li {
    margin-bottom: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-card__features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

/* Platforms */
.platforms__grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.platform-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 40px;
    transition: var(--transition);
    cursor: pointer;
}

.platform-card:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.platform-card__icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.platform-card span {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Reviews */
.reviews__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.review-card__header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
}

.review-card__name {
    font-weight: 600;
    font-size: 1.1rem;
}

.review-card__stars {
    font-size: 0.9rem;
}

.review-card__text {
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.5;
}

/* Content */
.content-section p {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 1.05rem;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 24px;
}

/* Guarantee */
.guarantee__container {
    display: flex;
    align-items: center;
    gap: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.guarantee__icon {
    font-size: 4rem;
}

.guarantee__title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

/* Footer */
.footer {
    padding: 40px 0;
    background: #050508;
    border-top: 1px solid var(--card-border);
    margin-top: 80px;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer__links a {
    margin-left: 20px;
}

.footer__links a:hover {
    color: var(--text-color);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .header__container {
        padding: 0 15px;
    }

    .nav {
        display: none;
        /* Hide nav links on mobile for simplicity or convert to hamburger if requested (keeping simple for 'landing page') */
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .pricing__grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .pricing-card.popular,
    .pricing-card.best-value {
        transform: none;
    }

    .pricing-card.popular:hover,
    .pricing-card.best-value:hover {
        transform: translateY(-5px);
    }



    .advantages__grid {
        grid-template-columns: 1fr;
    }

    .guarantee__container {
        flex-direction: column;
        text-align: center;
    }

    .promo__container {
        padding: 30px;
    }

    .footer__container {
        flex-direction: column;
        gap: 20px;
    }

    .footer__links a {
        margin: 0 10px;
    }
}

/* FAQ */
/* Neon Box Effect (Reusable) */
.neon-box {
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 40px;
    position: relative;
    /* Neon effect */
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3), inset 0 0 20px rgba(59, 130, 246, 0.1);
    animation: neon-pulse 3s infinite alternate;
}



@keyframes neon-pulse {
    0% {
        box-shadow: 0 0 10px rgba(59, 130, 246, 0.3), inset 0 0 20px rgba(59, 130, 246, 0.1);
        border-color: rgba(59, 130, 246, 0.3);
    }

    100% {
        box-shadow: 0 0 25px rgba(59, 130, 246, 0.6), inset 0 0 30px rgba(139, 92, 246, 0.2);
        border-color: rgba(139, 92, 246, 0.8);
    }
}

.faq-item {
    margin-bottom: 30px;
}

.faq-item:last-child {
    margin-bottom: 0;
}

.faq-item__question {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: white;
}

.faq-item__answer {
    color: var(--text-muted);
    line-height: 1.6;
}