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

:root {
    --primary-green: #0F6148;
    --light-green: #10B981;
    --dark-bg: #1A1A1A;
    --light-gray: #F5F5F5;
    --medium-gray: #E5E5E5;
    --text-dark: #1F1F1F;
    --text-gray: #6B7280;
    --white: #FFFFFF;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-small {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--medium-gray);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-icon {
    background: transparent;
    border: none;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--light-gray);
}

.btn-primary {
    background: var(--primary-green);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #0D5139;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 97, 72, 0.2);
}

.btn-secondary {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--medium-gray);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-large {
    padding: 14px 28px;
    font-size: 16px;
}

.hero {
    padding: 80px 0;
    background: var(--light-gray);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    max-width: 700px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--light-green);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.hero-version {
    font-size: 13px;
    color: var(--text-gray);
}

.feature-section {
    padding: 100px 0;
}

.feature-section:nth-child(even) {
    background: var(--light-gray);
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.feature-section.reverse .feature-grid {
    direction: rtl;
}

.feature-section.reverse .feature-content {
    direction: ltr;
}

.feature-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-subtitle {
    font-size: 18px;
    color: var(--light-green);
    margin-bottom: 16px;
}

.feature-description {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.7;
}

.mockup-card {
    background: var(--white);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.mockup-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-green);
    color: var(--white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.balance-display {
    margin-bottom: 24px;
}

.balance-label {
    font-size: 14px;
    color: var(--text-gray);
}

.balance-amount {
    font-size: 32px;
    font-weight: 700;
}

.asset-list {
    margin-bottom: 24px;
}

.asset-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--medium-gray);
}

.asset-icon {
    width: 32px;
    height: 32px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.asset-name {
    flex: 1;
    font-weight: 500;
}

.asset-value {
    font-weight: 600;
}

.chart-placeholder {
    height: 100px;
    background: var(--light-gray);
    border-radius: 8px;
    padding: 16px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    height: 100%;
}

.chart-bar {
    flex: 1;
    background: var(--light-green);
    border-radius: 4px;
    transition: all 0.3s;
}

.chart-bar:hover {
    background: var(--primary-green);
}

.device-mockup {
    background: linear-gradient(135deg, var(--text-dark) 0%, #2D2D2D 100%);
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.device-screen {
    background: #1F1F1F;
    border-radius: 16px;
    padding: 24px;
    border: 2px solid #3A3A3A;
}

.device-content {
    color: var(--white);
}

.device-label {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.device-amount {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.device-usd {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 24px;
}

.device-time {
    display: flex;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid #3A3A3A;
    font-size: 14px;
}

.steps-container {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--medium-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    transition: all 0.3s;
}

.step-item.active .step-number {
    background: var(--primary-green);
    color: var(--white);
}

.step-label {
    font-size: 14px;
    font-weight: 500;
}

.accordion-section {
    padding: 60px 0;
}

.accordion-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: 12px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.accordion-item:hover {
    border-color: var(--primary-green);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.accordion-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.accordion-header p {
    font-size: 14px;
    color: var(--text-gray);
}

.accordion-toggle {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-gray);
    cursor: pointer;
}

.security-features {
    padding: 100px 0;
    background: var(--light-gray);
}

.security-features h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 48px;
    max-width: 600px;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.security-card {
    background: var(--white);
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s;
}

.security-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.security-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.security-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.security-card p {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.6;
}

.security-card-cta {
    background: var(--primary-green);
    padding: 32px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.coins-section {
    padding: 80px 0;
    text-align: center;
}

.coins-section h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 32px;
}

.btn-coins {
    background: var(--dark-bg);
    color: var(--white);
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
}

.btn-coins:hover {
    background: #2D2D2D;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 24px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #2D2D2D;
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-green);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-column ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid #2D2D2D;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-gray);
}

.cookies-btn {
    background: transparent;
    color: var(--text-gray);
    border: 1px solid #2D2D2D;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.cookies-btn:hover {
    border-color: var(--primary-green);
    color: var(--white);
}

@media (max-width: 1024px) {
    .nav-menu {
        display: none;
    }

    .feature-grid,
    .feature-section.reverse .feature-grid {
        grid-template-columns: 1fr;
        gap: 48px;
        direction: ltr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn-large {
        width: 100%;
    }

    .feature-content h2 {
        font-size: 28px;
    }

    .nav-actions {
        gap: 8px;
    }

    .btn-primary {
        padding: 8px 16px;
        font-size: 14px;
    }

    .steps-container {
        flex-wrap: wrap;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

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

    .hero-subtitle {
        font-size: 16px;
    }

    .feature-section {
        padding: 60px 0;
    }

    .feature-content h2 {
        font-size: 24px;
    }

    .security-features h2,
    .coins-section h2 {
        font-size: 28px;
    }
}