body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 20px;
    padding: 20px;
    background: #f4f4f4;
}

h2 {
    margin: 40px 0 10px 0;
    text-align: left;
}

nav {
    background: #fff;
    margin-bottom: 60px;
}

.tool-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tool-menu > li {
    display: grid;
    grid-template-columns: 22% 1fr 22%;
    gap: 12px;
    border-bottom: 1px solid #ddd;
    padding: 10px 8px;
    align-items: center;
}

.tool-menu > li:last-child {
    border-bottom: none;
}

.tool-link {
    color: #0073e6;
    font-weight: 600;
    text-decoration: none;
}

.tool-link:hover {
    text-decoration: underline;
}

.demo-link {
    white-space: nowrap;
}

details summary {
    cursor: pointer;
    color: #0073e6;
}

details ul {
    margin: 4px 0 4px 20px;
}

footer {
    text-align: center;
    margin-top: 40px;
    font-size: 14px;
    color: #666;
}

/* Responsive styles */
@media (max-width: 768px) {
    .tool-menu > li {
        display: block;
    }

    .tool-menu > li > a,
    .tool-menu > li > span {
        display: block;
        margin-bottom: 10px;
    }

    body {
        margin: 10px;
        padding: 10px;
        font-size: 16px;
    }

    .tool-link,
    .demo-link {
        font-size: 17px;
    }
}