.anatomy-overview {
    padding: 80px 0;
    background: #f8fafc;
    overflow: visible;
}

.anatomy-container {
    display: flex;
    gap: 40px;
    max-width: 1400px;
    margin: auto;
    align-items: flex-start;
    position: relative;
    top: -45px; /* 將整個左右佈局向上提 50px */
}

/* 左側 */
.anatomy-sidebar {
    width: 450px;
    min-width: 450px;
    flex-shrink: 0;
    background-color: #ffffff;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.05);
    padding: 20px;
}

.anatomy-inner {
    padding: 5px;
}

.part-group {
    margin-bottom: 18px;
}

.part-group:last-child {
    margin-bottom: 0;
}

.part-group h4 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e2e8f0;
    position: relative;
}

.part-group h4::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 50px;
    height: 2px;
    background: #ff708d;
}

.product-card {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-item {
    text-align: center;
    cursor: pointer;
    position: relative; /* 【關鍵】讓偽元素可以絕對定位 */
    border-radius: 12px; /* 將圓角移到外層 */
    overflow: hidden;    /* 隱藏超出的部分 */
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

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

.product-item img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 12px;
    display: block;
    transition: transform 0.4s ease;
}
.product-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    opacity: 0; /* 預設完全透明 */
    transition: opacity 0.4s ease;
    z-index: 1;
}
.product-item.is-active img,
.product-item:hover img {
    box-shadow: 0 8px 25px rgba(255, 112, 141, 0.3);
}

.product-item span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b; /* 深藍灰色 */
    
    opacity: 0; /* 預設完全透明 */
    transition: opacity 0.4s ease;
    z-index: 2; /* 確保在濾鏡之上 */
    width: 80%; /* 避免文字太長 */
}

/* 右側 */
.anatomy-main {
    flex-grow: 1;
    min-height: 80vh;
    position: -webkit-sticky;
    position: sticky;
}

.human-visual {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    left: 0;
    transition: left 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 10;
}

.anatomy-main.is-active .human-visual {
    left: -25%;
}

.human-img {
    max-width: 450px;
    width: 100%;
    opacity: 0.3;
    filter: grayscale(100%);
}

.product-info-panel {
    position: absolute;
    top: 75%;
    left: 100%;
    top:40%;
    width: 50%;
    max-width: 450px;
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 5;
}

.anatomy-main.is-active .product-info-panel {
    left: 40%;
    opacity: 1;
}
#info-image {
    width: 100%;
    height: 250px; /* 設定一個固定高度 */
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 25px; /* 與下方文字的間距 */
}
.product-info-panel h3 {
    font-size: 2rem;
    font-weight: 800;
    color: #1e293b;
}

.product-info-panel p {
    font-size: 1.1rem;
    color: #475569;
    margin: 15px 0 25px 0;
    line-height: 1.7;
}

/* 指標 */
.pointers-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.pointer {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.pointer.is-active {
    opacity: 1;
    visibility: visible;
}

#pointer-head {
    top: 20%;
    left: 49%;
}

#pointer-mouth {
    top: 25%;
    left: 49%;
}

#pointer-bone {
    top: 40%;
    left: 49%;
}

#pointer-knee {
    top: 75%;
    left: 46%;
}

.pointer-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #ff708d;
    position: relative;
}

.pointer-dot::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #ff708d;
    animation: pulse 1.5s infinite;
    z-index: -1;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }

    100% {
        transform: scale(3);
        opacity: 0;
    }
}

/* 響應式 */
@media (max-width: 991px) {
    .anatomy-container {
        flex-direction: column;
    }

    .anatomy-sidebar {
        width: 100%;
        order: 2;
    }

    .anatomy-main {
        width: 100%;
        order: 1;
    }

    .human-visual {
        position: static;
        margin-bottom: 40px;
    }

    .product-info-panel {
        display: none;
    }
}

.product-info-panel {
    pointer-events: none;
}

.human-visual {
    pointer-events: none;
}
.product-item:hover::before {
    opacity: 0.85; /* 白色濾鏡浮現 */
}

.product-item:hover span {
    opacity: 1; /* 文字浮現 */
}

.product-item:hover img {
    transform: scale(1.1); /* 圖片稍微放大，增加動感 */
}