/* ===== 加载动画 ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--white);
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--secondary-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-lg);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#oil-detail {
    width: 100%;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.main-content {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
}

.oil-content .banner-image:nth-child(2){
    margin-top:7px;
}

.case-content-section {
    width: 100%;
    margin-top: var(--space-xl);
}

.case-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    align-items: stretch;
}

.case-left {
    width: 100%;
}

/* 产品主图区域 */
.product-main-image {
    width: 100%;
    margin-bottom: var(--space-lg);
    overflow: hidden;
}

.product-main-image img {
    width: 250px;
    height: auto;
    display: block;
}

/* 产品介绍 */
.product-intro {
    color: #000;
}

.product-intro h2 {
    font-size: var(--font-lg);
}

/* 产品详情 */
.product-details {
    margin-top: var(--space-xl);
}

.detail-section {
    margin-bottom: var(--space-xl);
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-section h3 {
    font-size: var(--font-md);
    color: #000;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.detail-section h3 i {
    font-size: var(--font-base);
}

.inspiration-list {
    list-style: none;
    font-size: 14px;
    font-weight: 700;
    color: #000;
}

.inspiration-list li {
    margin-bottom: var(--space-xs);
    padding-left: 0;
}

.inspiration-list li:last-child {
    margin-bottom: 0;
}

/* ===== 右列样式 ===== */
.case-right {
    width: 100%;
}

.image-gallery {
    display: grid;
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 5px;
    column-gap: 10px;
}

/* 画廊项目基础样式 */
.gallery-item {
    position: relative;
    overflow: hidden;
}


.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

/* 第二行右边的文字区域 */
.text-feature {
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    min-height: 200px;
    height: 100%;
    padding: 10px;
}

.feature-content {
    max-width: 90%;
}

.feature-content h3 {
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.feature-content p {
    font-size: var(--font-base);
    line-height: 1.6;
    opacity: 0.9;
}

@media (max-width: 767px) {
    .main-content {
        padding: var(--space-lg) var(--space-sm);
    }

    .case-content-section {
        margin-top: var(--space-lg);
    }

    .image-gallery {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }

    .gallery-item {
        aspect-ratio: 16/9;
        min-height: 180px;
    }

    .text-feature {
        aspect-ratio: 16/9;
        min-height: 180px;
        padding: var(--space-lg);
    }

    .feature-content h3 {
        font-size: var(--font-md);
        margin-bottom: var(--space-sm);
    }

    .feature-content p {
        font-size: var(--font-sm);
        line-height: 1.5;
    }
}

/* 小手机端优化 (小于576px) */
@media (max-width: 575px) {
    .main-content {
        padding: var(--space-md) var(--space-xs);
    }

    .image-gallery {}

    .gallery-item {
        aspect-ratio: 16/10;
        min-height: 160px;
    }

    .text-feature {
        aspect-ratio: 16/10;
        min-height: 160px;
        padding: var(--space-md);
    }

    .feature-content h3 {
        font-size: var(--font-base);
    }

    .feature-content p {
        font-size: var(--font-xs);
    }

    /* #oil-detail {
        margin-top: calc(5rem + 6rem);
    } */
}

/* 平板端 (768px-1024px) */
@media (min-width: 768px) {
    .main-content {
        max-width: 90%;
        padding: var(--space-xl) 0;
    }

    .case-container {
        flex-direction: row;
        gap: var(--space-xxl);
        align-items: stretch;
    }

    .case-left {
        flex: 0 0 50%;
        display: flex;
        flex-direction: column;
        height: 100%;
    }

    .product-details {
        flex: 1;
        min-height: 0;
    }

    .case-right {
        flex: 0 0 45%;
        display: flex;
        flex-direction: column;
        height: 100%;
    }

    .image-gallery {
        flex: 1;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, 1fr);
        height: 100%;
        min-height: 0;
    }

    .gallery-item {
        min-height: 0;
        height: 100%;
    }

    .gallery-item img {
        height: 100%;
    }

    .text-feature {
        height: 100%;
        min-height: 0;
    }

}

@media (min-width: 1024px) {
    .main-content {
        max-width: 1200px;
    }

    .case-container {
        gap: 60px;
    }

    .case-left {
        flex: 0 0 50%;
    }

    .case-right {
        flex: 0 0 40%;
    }

    .image-gallery {}

    .gallery-item {
        aspect-ratio: 4/3;
    }

    .text-feature {
        aspect-ratio: 4/3;
    }

}

/* 宽屏桌面端 (1200px+) */
@media (min-width: 1200px) {
    .main-content {
        max-width: 1400px;
    }

    .case-container {
        gap: 80px;
    }

    .product-intro h2 {
        font-size: var(--font-xl);
    }

    .detail-section h3 {
        font-size: var(--font-lg);
    }

    .image-gallery {}

    .gallery-item {
        aspect-ratio: 3/2;
    }

    .text-feature {
        aspect-ratio: 3/2;
    }
}

/* 超宽屏 (1920px+) */
@media (min-width: 1920px) {
    .main-content {
        max-width: 1600px;
    }

    .case-container {
        gap: 100px;
    }

}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .case-container {
        flex-direction: row;
    }

    .image-gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, 1fr);
    }

    .gallery-item {
        aspect-ratio: 4/3;
        min-height: 120px;
    }

    .text-feature {
        aspect-ratio: 4/3;
        min-height: 120px;
    }

}

.image-gallery {
    grid-auto-flow: dense;
}

.gallery-item {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

@media (max-width: 767px) {

    .gallery-item[style*="grid-row"],
    .gallery-item[style*="grid-column"] {
        grid-row: auto !important;
        grid-column: auto !important;
    }

    .image-gallery {
        grid-template-columns: 1fr !important;
        grid-auto-rows: minmax(200px, auto) !important;
    }
}