.about-hero {
    position: relative;
    color: var(--white);
}

.about-hero-bg {

    height:600px;

    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/about1.png') center/cover no-repeat;
    min-height: 30vh;
    display: flex;
    align-items: center;
}

.about-hero-container {
    text-align: left;
}

.about-hero-title {
    font-size: 4rem;
    font-weight: 900;
    text-transform: uppercase;
    color: var(--white);
}




.fixed-contact-buttons {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 999;
}


.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #3A0A0A;
    color: #fff;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: background-color 0.3s;
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    background-color: #550f0f;
}

/* 产品详情主容器 */
.product-detail {
    padding: 3rem 0;
    background-color: #fff;
}

.product-container{

    max-width: 800px;
}



/* 产品头部图片 */
.product-header-img {
    text-align: center;
    margin-bottom: 2rem;
}

.product-header-img img {
    max-width: 100%;
    height: auto;
}

/* 产品标题 */
.product-title {
    font-size: 2.2rem;
    color: #333;
    text-align: center;
    margin-bottom: 0.5rem;
    text-transform: capitalize;
}

.product-meta {
    text-align: center;
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* 内容布局 */
.content-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    margin-top: 2rem;
}

.main-content {
    flex: 1;
    min-width: 700px;
}

.sidebar {
    flex: 0 0 300px;
}

/* 产品缩略图 */
.product-thumbnail {
    margin-bottom: 2rem;
    border: 1px solid #eee;
    padding: 1rem;
    display: inline-block;
}

.product-thumbnail img {
    max-width: 100%;
    height: auto;
}

/* 文本样式 */
.intro-text {
    margin-bottom: 2rem;
    line-height: 1.8;
    color: #000;
}

.section-heading {
    font-size: 1.5rem;
    color: #333;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eee;
}

/* 表格样式 */
.table-responsive {
    overflow-x: auto;
    margin: 1.5rem 0 2rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 0.8rem;
    border: 1px solid #ddd;
    text-align: left;
    vertical-align: top;
}

.data-table th {
    background-color: #f8f8f8;
    font-weight: bold;
    color: #333;
}

.data-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.properties-table td {
    white-space: nowrap;
}

.comparison-table td {
    vertical-align: middle;
}

.comparison-table tr td:first-child {
    font-weight: 500;
}

/* 优势列表 */
.advantages-list {
    margin: 1rem 0 2rem 2rem;
    line-height: 1.8;
    color: #666;
}

.advantages-list li {
    margin-bottom: 0.8rem;
}

/* 内联链接 */
.inline-link {
    color: #3A0A0A;
    text-decoration: underline;
    transition: color 0.3s;
}

.inline-link:hover {
    color: #550f0f;
}

.contact-link {
    color: #d32f2f;
}

/* 分页导航 */
.pagination {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.prev-post, .next-post {
    color: #333;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
}

.prev-post:hover, .next-post:hover {
    color: #3A0A0A;
}

/* 目录样式 */
.toc-wrapper {
    border: 1px solid #eee;
    padding: 1.5rem;
    background-color: #f9f9f9;
    position: sticky;
    top: 100px;
}

.toc-title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toc-hide {
    font-size: 0.8rem;
    color: #999;
    cursor: pointer;
}

.toc-list {
    list-style: none;
    font-size: 0.9rem;
}

.toc-list li {
    margin-bottom: 0.8rem;
}

.toc-list a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}

.toc-list a:hover {
    color: #3A0A0A;
    text-decoration: underline;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .content-wrapper {
        gap: 2rem;
    }
    
    .main-content {
        min-width: 600px;
    }
}

@media (max-width: 992px) {
    .content-wrapper {
        flex-direction: column;
    }
    
    .main-content {
        min-width: 100%;
    }
    
    .sidebar {
        width: 100%;
        flex: none;
    }
    
    .toc-wrapper {
        position: static;
    }
    
    .fixed-contact-buttons {
        top: auto;
        bottom: 20px;
        right: 20px;
        transform: none;
        flex-direction: row;
        background-color: #fff;
        padding: 0.5rem;
        border-radius: 8px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }
    
    .contact-input {
        width: 120px;
    }
}

@media (max-width: 768px) {
    .product-title {
        font-size: 1.8rem;
    }
    
    .section-heading {
        font-size: 1.3rem;
    }
    
    .fixed-contact-buttons {
        flex-direction: column;
        bottom: 80px;
    }
    
    .contact-input {
        width: 150px;
    }
    
    .pagination {
        flex-direction: column;
        gap: 1rem;
    }
    
    .prev-post, .next-post {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .product-title {
        font-size: 1.5rem;
    }
    
    .data-table {
        font-size: 0.8rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.5rem;
    }
    
    .fixed-contact-buttons {
        right: 10px;
        bottom: 70px;
    }
    
    .back-to-top {
        right: 15px;
        bottom: 15px;
        width: 35px;
        height: 35px;
    }
}