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

:root {
    --primary-color: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #EEF2FF;
    --accent-color: #F59E0B;
    --accent-dark: #D97706;
    --secondary-color: #0F172A;
    --text-dark: #0F172A;
    --text-gray: #475569;
    --text-light: #64748B;
    --bg-white: #FFFFFF;
    --bg-gray: #F8FAFC;
    --bg-dark: #1E293B;
    --border-color: #E2E8F0;
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    font-weight: 400;
    letter-spacing: -0.01em;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Center Content Class for Index Page */
.center-content {
    text-align: center;
}

.center-content .section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.center-content .section-title,
.center-content .section-subtitle {
    text-align: center;
}

.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 44px;
    height: 44px;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.2));
}

.brand-name {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

.hero {
    padding: var(--spacing-3xl) 0 120px;
    background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 50%, #FEF3C7 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3xl);
    width: 100%;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
}

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

.hero-description {
    font-size: 22px;
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: var(--spacing-xl);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-product {
    background: var(--gradient-accent);
    color: var(--bg-white);
    width: 100%;
    text-align: center;
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.btn-product:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-image {
    flex: 1;
}

.features {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-white);
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 22px;
    color: var(--text-gray);
    margin-bottom: var(--spacing-3xl);
    font-weight: 500;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header {
    margin-bottom: var(--spacing-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-gray);
    font-weight: 500;
}

.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--bg-gray) 0%, var(--primary-light) 100%);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.step-card {
    padding: var(--spacing-xl);
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    color: var(--bg-white);
    font-size: 32px;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.step-card h3 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.step-card p {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-gray);
    font-weight: 500;
}

.products {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xl);
}

.product-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.product-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.product-card p {
    flex: 1;
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-gray);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.why-choose {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-dark);
    color: var(--bg-white);
}

.why-choose .section-title {
    color: var(--bg-white);
}

.why-choose .section-subtitle {
    color: var(--text-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-item {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.benefit-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
}

.benefit-item svg {
    margin-bottom: var(--spacing-lg);
}

.benefit-item h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.benefit-item p {
    font-size: 17px;
    color: var(--text-light);
    font-weight: 500;
}

.security {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-white);
}

.security-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3xl);
}

.security-text {
    flex: 1;
    max-width: 600px;
}

.security-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.security .section-title {
    text-align: left;
}

.security-description {
    font-size: 20px;
    line-height: 1.7;
    color: var(--text-gray);
    margin-bottom: var(--spacing-xl);
    font-weight: 500;
}

.security-list {
    list-style: none;
    padding: 0;
}

.security-list li {
    font-size: 18px;
    color: var(--text-gray);
    padding: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    position: relative;
    font-weight: 500;
}

.security-list li::before {
    content: "✓";
    color: var(--primary-color);
    font-weight: 800;
    font-size: 24px;
    position: absolute;
    left: 0;
    top: var(--spacing-md);
}

.multi-chain {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-gray) 100%);
}

.chains-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.chain-card {
    padding: var(--spacing-xl);
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.chain-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.chain-icon {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    color: var(--bg-white);
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.chain-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.01em;
}

.stats {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.stats .container {
    position: relative;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 56px;
    font-weight: 900;
    color: var(--bg-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.contacts {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-white);
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.contact-card {
    padding: var(--spacing-xl);
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.contact-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.contact-icon {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.contact-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.contact-card a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    transition: color 0.3s ease;
}

.contact-card a:hover {
    color: var(--primary-dark);
}

.contact-card p {
    font-size: 17px;
    color: var(--text-gray);
    line-height: 1.6;
    font-weight: 500;
}

.footer {
    background: var(--bg-dark);
    color: var(--bg-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    flex: 2;
    min-width: 300px;
}

.footer-section:not(.footer-brand) {
    flex: 1;
    min-width: 200px;
}

.footer-section h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--bg-white);
    letter-spacing: -0.01em;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--bg-white);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-logo .brand-name {
    color: var(--bg-white);
    font-size: 22px;
    font-weight: 800;
}

.footer-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.7;
    font-weight: 500;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    font-size: 16px;
    color: var(--text-light);
    font-weight: 500;
}

@media (max-width: 768px) {
    .hero-content {
        flex-direction: column;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-title {
        font-size: 48px;
    }

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

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .section-title {
        font-size: 36px;
    }

    .section-subtitle {
        font-size: 20px;
    }

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

    .security .section-title {
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-brand,
    .footer-section:not(.footer-brand) {
        flex: none;
        min-width: auto;
    }

    .features-grid,
    .steps-grid,
    .products-grid,
    .benefits-grid,
    .chains-grid,
    .stats-grid,
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 42px;
    }

    .product-image {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }

    .section-title {
        font-size: 28px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-content {
        gap: var(--spacing-lg);
    }

    .hero,
    .features,
    .how-it-works,
    .products,
    .why-choose,
    .security,
    .multi-chain,
    .stats,
    .contacts {
        padding: var(--spacing-2xl) 0;
    }

    .btn {
        padding: 14px 24px;
        font-size: 15px;
    }

    .product-image {
        height: 160px;
    }

    .hero-img {
        max-width: 100%;
    }
}