body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #212529;
}

header, footer {
    background: #ffffff;
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid #dee2e6;
}

footer {
    border-top: 1px solid #dee2e6;
    margin-top: 40px;
}

h1, h2, h3 {
    color: #212529;
    margin-bottom: 20px;
}

p {
    color: #212529;
    line-height: 1.6;
}

.section {
    max-width: 900px;
    margin: auto;
    padding: 40px 20px;
}

.cta-btn {
    background: #007bff;
    color: #ffffff;
    padding: 12px 22px;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    margin-top: 20px;
    font-weight: 500;
}

.cta-btn:hover {
    background: #0069d9;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.grid a {
    background: #ffffff;
    padding: 20px;
    border-radius: 4px;
    text-align: center;
    text-decoration: none;
    color: #007bff;
    font-weight: 600;
    border: 1px solid #dee2e6;
}

.grid a:hover {
    background: #f8f9fa;
}