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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    max-width: 1000px;
    width: 90%;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    animation: slideIn 0.6s ease-out;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.card h2 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    color: #666;
}

footer {
    text-align: center;
    color: white;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    main {
        grid-template-columns: 1fr;
    }
}