/* product_detail.html — 产品详情 + 常见问题 */

.faq-wrap {
    margin: 30px 0;
}
.faq-item {
    border: 1px solid #eee;
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-q {
    background: #f8f8f8;
    padding: 14px 18px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-q:hover {
    background: #f0f0f0;
}
.faq-a {
    padding: 0 18px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    line-height: 1.7;
    color: #555;
}
.faq-item.active .faq-a {
    padding: 16px 18px;
    max-height: 800px;
}
.faq-item.active .faq-q::after {
    content: "−";
}
.faq-q::after {
    content: "+";
    font-size: 20px;
}