* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #ffffff;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    color: #007bff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover {
    color: #ff6f61;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    margin-bottom: 3rem;
}

h1, h2, h3 {
    color: #007bff;
}

#intro {
    text-align: center;
    padding: 2rem 0;
}

.card-container {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.card {
    background-color: #ffffff;
    padding: 1.5rem;
    border-radius: 8px;
    flex: 1;
    min-width: 300px;
    max-width: 45%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

.card a {
    color: #007bff;
    text-decoration: none;
}

.card a:hover {
    color: #ff6f61;
    text-decoration: underline;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #007bff;
    color: #ffffff;
}

.accordion-item {
    margin-bottom: 1rem;
}

.accordion-header {
    background-color: #007bff;
    color: #ffffff;
    padding: 1rem;
    width: 100%;
    text-align: left;
    border: none;
    cursor: pointer;
    font-weight: bold;
    border-radius: 8px;
}

.accordion-content {
    display: none;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.accordion-content.active {
    display: block;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #ffffff;
    color: #666;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        text-align: center;
    }

    .card {
        max-width: 100%;
    }
}