body {
    background-color: #2f2f2f;
}

.nav_item a:hover {
    color: #ffffff;
    background-color: #d3bf18;
}

.nav_item a:visited {
    color: #ffffff;
    background-color: #d3bf18;
}

.active a {
    color: #ffffff;
    background-color: #d3bf18;
}

/* 质保卡容器样式 */
.warranty-card {
    max-width: 800px;
    margin: 20px auto;
    background: url('/images/modan/warrantycard_bg.jpg') no-repeat #fff;
    padding: 120px 50px 50px 50px;
    display: flex;
    justify-content: space-between;

}
@media (max-width: 992px) {
    .warranty-card {
        background: url('/images/modan/warrantycard_s_bg.jpg') no-repeat #ffffff;
    }
}