:root {
    /* Main color scheme - completely different from Russian site */
    --primary-color: #00c6ff;
    --secondary-color: #ff72b1;
    --accent-color: #6c63ff;
    --background-color: #f5fafd;
    --dark-text: #2d3748;
    --light-text: #718096;
    --white: #ffffff;
    --light-gray: #edf2f7;
    --dark-gray: #4a5568;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    
    /* Container width */
    --container-width: 1140px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

/* Fonts */
@font-face {
    font-family: 'Poppins';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(https://fonts.gstatic.com/s/poppins/v20/pxiEyp8kv8JHgFVrJJfecg.woff2) format('woff2');
}

@font-face {
    font-family: 'Poppins';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url(https://fonts.gstatic.com/s/poppins/v20/pxiByp8kv8JHgFVrLEj6Z1xlFQ.woff2) format('woff2');
}

@font-face {
    font-family: 'Poppins';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url(https://fonts.gstatic.com/s/poppins/v20/pxiByp8kv8JHgFVrLCz7Z1xlFQ.woff2) format('woff2');
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--dark-text);
    background-color: var(--background-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

img, svg {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--space-md);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--space-md);
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

/* Layout */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

section {
    padding: var(--space-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--light-gray);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 100;
    padding: var(--space-md) 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-svg {
    width: 40px;
    height: 40px;
    margin-right: var(--space-md);
}

.site-name {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark-text);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--dark-text);
    font-weight: 600;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-cta {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 25px;
    position: relative;
    z-index: 2;
}

.bar {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--dark-text);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #f0f7ff 0%, #f9f0ff 100%);
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.hero-content {
    flex: 1;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    color: var(--light-text);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
}

.hero-image {
    flex: 1;
    max-width: 500px;
}

/* Features Section */
.features {
    background-color: var(--white);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-lg);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}

/* Testimonials */
.testimonials {
    background-color: var(--background-color);
}

.testimonial-slider {
    display: flex;
    gap: var(--space-lg);
    overflow-x: auto;
    padding: var(--space-md) 0;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.testimonial-slider::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.testimonial {
    flex: 0 0 auto;
    width: calc(33.333% - var(--space-lg));
    padding: var(--space-lg);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.rating {
    color: #ffc107;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.user {
    font-weight: 600;
    margin-top: var(--space-md);
    color: var(--dark-gray);
}

/* How It Works */
.how-it-works {
    background-color: var(--white);
}

.steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    gap: var(--space-lg);
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
    margin: 0 auto var(--space-md);
}

.cta-container {
    text-align: center;
    margin-top: var(--space-xl);
}

/* FAQ Section */
.faq {
    background-color: var(--background-color);
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background-color: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.accordion-header {
    padding: var(--space-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.accordion-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.accordion-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.accordion-content {
    padding: 0 var(--space-lg);
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.accordion-item.active .accordion-content {
    padding: 0 var(--space-lg) var(--space-lg);
    max-height: 300px;
}

.accordion-item:hover {
    box-shadow: var(--shadow-md);
}

/* Footer */
.site-footer {
    background-color: #1a202c;
    color: var(--white);
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-logo {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
}

.footer-logo-svg {
    width: 40px;
    height: 40px;
    margin-right: var(--space-md);
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-site-name {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.copyright {
    color: rgba(255,255,255,0.6);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-md);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-column a {
    color: rgba(255,255,255,0.7);
}

.footer-column a:hover {
    color: var(--secondary-color);
}

/* Responsive Styles */
@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-links {
        width: 100%;
        justify-content: space-around;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        flex-direction: column;
        background: var(--white);
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        padding: 80px var(--space-lg) var(--space-lg);
        z-index: 1;
        transition: right 0.3s ease;
    }
    
    .nav-links.active {
        right: 0;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }
    
    .menu-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
    
    .testimonial-slider {
        flex-direction: column;
    }
    
    .testimonial {
        width: 100%;
        margin-bottom: var(--space-md);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-lg);
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}