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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 900px;
    width: 100%;
    text-align: center;
}

header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

main {
    margin: 30px 0;
}

.main-graphic {
    margin: 30px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-graphic svg {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.icon-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.icon-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #2c3e50;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    padding: 20px;
    border-radius: 15px;
    background: #f8f9fa;
}

.icon-link:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.icon-link svg {
    width: 80px;
    height: 80px;
    margin-bottom: 10px;
}

.icon-link span {
    font-size: 1.1rem;
    font-weight: bold;
    margin-top: 10px;
}

.pdf-link:hover {
    background: #ffe5e5;
}

.video-link:hover {
    background: #e5f2ff;
}

footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px solid #ecf0f1;
}

footer p {
    color: #7f8c8d;
    font-size: 1rem;
}

footer a {
    color: #3498db;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #2980b9;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .icon-links {
        gap: 20px;
    }
    
    .icon-link svg {
        width: 60px;
        height: 60px;
    }
}