body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f8f9fa;
}

.container {
    width: 90%;
    max-width: 900px;
    margin: auto;
}

.site-header, .site-footer {
    background: #222;
    color: #fff;
    padding: 15px 0;
}

.site-header nav a, .site-footer a {
    color: #fff;
    margin-right: 15px;
}

.hero {
    text-align: center;
    padding: 60px 0;
}

.tool-grid {
    display: flex;
    gap: 20px;
}

.tool-card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    flex: 1;
    text-decoration: none;
    color: #000;
}

.tool-box {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
}

.btn-primary {
    background: #007bff;
    color: #fff;
    padding: 10px 20px;
    display: inline-block;
    border-radius: 5px;
    text-decoration: none;
}

.ad-banner {
    background: #ddd;
    text-align: center;
    padding: 20px;
    margin: 20px 0;
}

.hidden {
    display: none;
}