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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    text-align: center;
    padding: 60px 20px;
}

header h1 {
    font-size: 3em;
    margin-bottom: 10px;
    animation: fadeInDown 0.8s ease;
}

header p {
    font-size: 1.2em;
    opacity: 0.9;
}

.download-section {
    padding: 40px;
}

.download-section h2 {
    text-align: center;
    margin-bottom: 40px;
    color: #333;
    font-size: 2em;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.card-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.card h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.file-info {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 10px;
}

.description {
    color: #777;
    margin-bottom: 20px;
    line-height: 1.4;
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.2s ease;
}

.download-btn:hover {
    transform: scale(1.05);
}

.info-section {
    background: #f8f9fa;
    padding: 30px 40px;
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
}

.info-section h3 {
    color: #333;
    margin-bottom: 15px;
}

.info-section ul {
    list-style-position: inside;
    color: #666;
}

.info-section li {
    margin-bottom: 8px;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .download-section {
        padding: 20px;
    }
    
    .download-cards {
        grid-template-columns: 1fr;
    }
}