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

:root {
    --primary-green: #00A868;
    --dark-green: #0F6B49;
    --light-gray: #F5F5F5;
    --medium-gray: #E5E5E5;
    --dark-gray: #333333;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --white: #FFFFFF;
    --border-color: #E0E0E0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.12);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
    color: var(--text-primary);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
    color: var(--text-secondary);
}

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

.cart {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: var(--primary-green);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-green);
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero {
    background-color: var(--primary-green);
    color: var(--white);
    border: none;
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
}

.btn-hero:hover {
    background-color: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.version-info {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-top: 32px;
    font-size: 13px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.feature-section {
    padding: 80px 0;
}

.gray-bg {
    background-color: var(--light-gray);
}

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

.feature-grid.reverse {
    grid-template-columns: 1fr 1fr;
}

.feature-grid.reverse .feature-visual {
    order: -1;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 12px;
}

.section-title.centered {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 60px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--primary-green);
    margin-bottom: 20px;
    font-weight: 500;
}

.feature-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.wallet-interface {
    background-color: var(--white);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.wallet-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.wallet-icon {
    width: 48px;
    height: 48px;
    background-color: var(--light-gray);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wallet-name {
    font-size: 14px;
    color: var(--text-secondary);
}

.wallet-balance {
    font-size: 36px;
    font-weight: 700;
}

.wallet-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.action-btn {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

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

.action-btn.success {
    background-color: var(--primary-green);
    color: var(--white);
    border-color: var(--primary-green);
}

.action-btn.success:hover {
    background-color: var(--dark-green);
}

.coin-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.coin-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.coin-symbol {
    font-weight: 600;
}

.coin-amount {
    font-weight: 500;
}

.chart {
    margin-top: 24px;
}

.mini-chart {
    width: 100%;
    height: 80px;
}

.device-mockup {
    display: flex;
    align-items: center;
    gap: 32px;
    background-color: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.trezor-device {
    background: linear-gradient(135deg, #1A1A1A 0%, #333333 100%);
    border-radius: 20px;
    padding: 32px 24px;
    min-width: 200px;
}

.device-screen {
    background-color: #2A2A2A;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen-content {
    text-align: center;
    color: var(--white);
}

.screen-content svg {
    margin-bottom: 16px;
}

.screen-text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.screen-subtext {
    font-size: 14px;
    color: #999;
}

.device-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.device-button {
    width: 40px;
    height: 12px;
    background-color: #444;
    border-radius: 6px;
}

.transaction-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.info-value {
    font-size: 16px;
    font-weight: 600;
}

.steps-container {
    display: flex;
    gap: 24px;
    background-color: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    justify-content: center;
}

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

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

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

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

.step-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.accordion-item {
    background-color: var(--white);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.accordion-header h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.accordion-header p {
    font-size: 15px;
    color: var(--text-secondary);
}

.accordion-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.accordion-toggle:hover {
    transform: rotate(180deg);
}

.security-features {
    padding: 80px 0;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

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

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

.security-icon {
    width: 56px;
    height: 56px;
    background-color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--primary-green);
}

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

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

.btn-discover {
    background-color: var(--dark-green);
    color: var(--white);
    border: none;
    padding: 18px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.btn-discover:hover {
    background-color: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.coins-info {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

.coins-badge {
    background-color: var(--white);
    padding: 16px 32px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.footer {
    background-color: var(--text-primary);
    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-copyright {
    font-size: 14px;
    color: #999;
    margin-bottom: 24px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.3s ease;
}

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

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    color: #999;
}

.language-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    transition: all 0.3s ease;
}

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

@media (max-width: 1024px) {
    .hero-title {
        font-size: 42px;
    }

    .feature-grid {
        gap: 48px;
    }

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

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-actions .icon-btn:not(.cart) {
        display: none;
    }

    .btn-primary {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 48px 0 40px;
    }

    .hero-title {
        font-size: 32px;
    }

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

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

    .btn-hero,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .version-info {
        flex-direction: column;
        gap: 8px;
    }

    .feature-section {
        padding: 48px 0;
    }

    .feature-grid,
    .feature-grid.reverse {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .feature-grid.reverse .feature-visual {
        order: 0;
    }

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

    .wallet-interface {
        padding: 24px;
    }

    .device-mockup {
        flex-direction: column;
        padding: 24px;
    }

    .steps-container {
        flex-wrap: wrap;
        padding: 24px;
    }

    .accordion-item {
        padding: 24px;
    }

    .accordion-header h3 {
        font-size: 18px;
    }

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

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 26px;
    }

    .section-title {
        font-size: 24px;
    }

    .wallet-balance {
        font-size: 28px;
    }

    .steps-container {
        gap: 16px;
    }

    .step-number {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }
}