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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #1e1e1e;
    line-height: 1.6;
}

.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

.logo {
    font-size: 32px;
    font-weight: 900;
    color: #1652f0;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: #1e1e1e;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #1652f0;
}

.nav-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 15px;
    display: inline-block;
}

.btn-primary {
    background: #1652f0;
    color: white;
}

.btn-primary:hover {
    background: #0d3cc7;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #1652f0;
    border: 2px solid #1652f0;
}

.btn-secondary:hover {
    background: #1652f0;
    color: white;
}

.hero {
    background: linear-gradient(135deg, #1652f0 0%, #0d3cc7 100%);
    color: white;
    padding: 150px 30px 100px;
    margin-top: 70px;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-text p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn-hero {
    padding: 16px 40px;
    font-size: 18px;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #1e1e1e;
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
    margin: 0 auto;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 25px;
    padding: 30px 20px;
    color: white;
}

.app-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    font-size: 24px;
    font-weight: 700;
}

.crypto-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.crypto-item {
    background: rgba(255,255,255,0.15);
    padding: 20px;
    border-radius: 15px;
    display: flex;
    justify-content: space-between;
    font-size: 18px;
    font-weight: 600;
}

.crypto-prices {
    padding: 60px 30px;
    background: #f8f9fa;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 900;
    margin-bottom: 50px;
    color: #1e1e1e;
}

.price-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.price-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.price-card:hover {
    transform: translateY(-5px);
}

.crypto-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.crypto-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.btc {background: linear-gradient(135deg, #f7931a, #f2a900);}
.eth {background: linear-gradient(135deg, #627eea, #8c9eff);}
.usdt {background: linear-gradient(135deg, #26a17b, #50af95);}
.xrp {background: linear-gradient(135deg, #23292f, #4e5d6c);}

.crypto-name h3 {
    font-size: 24px;
    margin-bottom: 5px;
}

.crypto-symbol {
    color: #888;
    font-size: 14px;
}

.crypto-price {
    font-size: 32px;
    font-weight: 900;
    color: #1e1e1e;
    margin-bottom: 10px;
}

.crypto-change {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
}

.positive {
    background: #d4edda;
    color: #155724;
}

.negative {
    background: #f8d7da;
    color: #721c24;
}

.features {
    padding: 80px 30px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.feature-card {
    text-align: center;
    padding: 40px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1652f0, #0d3cc7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: white;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

.how-it-works {
    padding: 80px 30px;
    background: #f8f9fa;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.step {
    background: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #1652f0;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    margin: 0 auto 25px;
}

.step h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.step p {
    color: #666;
}

.cta {
    background: linear-gradient(135deg, #1652f0 0%, #0d3cc7 100%);
    color: white;
    padding: 100px 30px;
    text-align: center;
}

.cta h2 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 20px;
}

.cta p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.footer {
    background: #1e1e1e;
    color: white;
    padding: 60px 30px 30px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

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

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

.footer-section a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    color: #888;
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}