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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    width: 40px;
    height: 40px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
    color: #28a745;
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero > .container > p {
    font-size: 20px;
    margin-bottom: 60px;
    opacity: 0.9;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.feature {
    text-align: center;
}

.feature .icon {
    font-size: 48px;
    display: block;
    margin-bottom: 20px;
}

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

.feature p {
    opacity: 0.9;
}

.cta {
    margin-top: 40px;
}

.download-button {
    background: #28a745;
    color: white;
    border: none;
    padding: 18px 40px;
    font-size: 20px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.download-button:hover {
    background: #218838;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

.supported {
    margin-top: 20px;
    opacity: 0.8;
    font-size: 16px;
}

.how-it-works {
    padding: 80px 0;
    background: #f8f9fa;
}

.how-it-works h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

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

.step {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.step-number {
    background: #667eea;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.step p {
    color: #666;
    font-size: 16px;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 0;
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 36px;
    }
    
    .hero > .container > p {
        font-size: 18px;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
}