body {
    margin: 0;
}

.topbar {
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
    margin: 0;
}
.topbar a {
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
    margin: 0;
    text-decoration: none;
}

.title {
    font-family: 'Arial', sans-serif;
    font-size: 30px;
    color: #0099ff;
}

.content {
    padding: 20px;
    font-family:Arial, Helvetica, sans-serif;
    font-size: 18px;
    color: #000000;
    background: rgb(255, 255, 255);
    text-align: center;
}

.products {
    max-width: 1000px;
    margin: 40px auto;
}

.catalog {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 20px;
}

.products h2 {
    text-align: center;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    margin-bottom: 20px;
    font-size: 28px;
}

.product {
    background: #ffffff;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    transition: 0.2s;
}

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

.links {
    margin-top: 10px;
}

.links a {
    display: inline-block;
    margin: 5px;
    padding: 8px 12px;
    background: #0099ff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 14px;
}

.links a:hover {
    background: #007acc;
}

.pdf-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #0099ff;
    font-weight: 500;
}

.pdf-link::before {
    content: "";
    width: 18px;
    height: 18px;
    background-image: url("https://cdn-icons-png.flaticon.com/512/337/337946.png");
    background-size: contain;
    background-repeat: no-repeat;
}