body {
    font-family: 'Noto Sans SC', sans-serif;
    color: #333;
    line-height: 1.6;
}
.nav-item {
    position: relative;
    color: #333;
}
.nav-item::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #0974D7;
    transition: width 0.3s ease;
}
.nav-item:hover::after {
    width: 100%;
}
.nav-item.active {
color: #0974D7; /* 选中项的文字颜色 */
}
.product-card {
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}
.article-card {
    transition: all 0.3s ease;
}
.article-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.mobile-menu.active {
    max-height: 300px;
}