.pv-accordion {
    display: flex;
    gap: 40px;
}

.pv-acc-list {
    width: 40%;
}

.pv-acc-item {
    background: #f5f5f5;
    border-radius: 16px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 1s ease;
}

.pv-acc-header {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: all 1s ease;
}

.pv-acc-item.active .pv-acc-header {
    transform: scale(1.02);
}
.pv-toggle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #000;
    color: #fff;
    border: none;
    transition: all 1s ease;
}
.pv-acc-content {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-50px);
    transition: 
        max-height 0.8s ease,
        opacity 0.8s ease,
        transform 0.8s ease;
    padding: 0 20px;
}

.pv-acc-item.active .pv-acc-content {
    max-height: 300px; /* 可稍大 */
    opacity: 1;
    transform: translateY(0);
    padding: 0 20px 20px;
}

.pv-acc-image {
    position: relative;
    width: 500px;
    height: auto;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

/* 关键：让两张图叠在一起 */
.pv-acc-image img {
    position: absolute;   /* ⭐核心 */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%!important;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease;
}

/* 默认显示主图 */
.pv-acc-image .img-main {
    opacity: 1;
    z-index: 1;
}

.pv-acc-image .img-next {
    z-index: 2;
}