body {
    font-family: 'AlimamaFangYuanTi';
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
}

        /* Header */
        .header {
            background-color: #ffffff;
            padding: 20px 120px;
            display: flex;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: relative;
            z-index: 1001;
        }

        /* Logo 容器样式 - 确保内部元素居中 */
.logo {
    display: flex;
    align-items: center;        /* 垂直居中 */
    justify-content: center;    /* 水平居中 */
    height: 100%;
    z-index: 10;
}

/* Logo 链接样式 */
.logo-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;        /* 垂直居中 */
    justify-content: center;    /* 水平居中 */
    height: 100%;
    transition: transform 0.3s ease;
}

.logo-link:hover {
    text-decoration: none;
    color: inherit;
    transform: scale(1.05);
}

/* Logo 图片样式 - 确保图片在容器内居中 */
.logo-image {
    height: 26px;
    width: auto;
    max-width: 200px;
    min-width: 120px;
    object-fit: contain;
    object-position: center;    /* 图片内容居中 */
    transition: all 0.3s ease;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    display: block;             /* 确保图片作为块级元素 */
    margin: 0 auto;            /* 水平居中（备用方案） */
}

.logo-image:hover {
    filter: brightness(1.1);
}

/* 响应式调整 - 针对高分辨率图片 */
@media (max-width: 1400px) {
    .logo-image {
        height: 28px;
        max-width: 230px;
    }
}

@media (max-width: 1200px) {
    .logo {
        left: 35px;
    }
    .logo-image {
        height: 28px;
        max-width: 200px;
    }
}

@media (max-width: 992px) {
    .logo {
        left: 30px;
    }
    .logo-image {
        height: 42px;
        max-width: 180px;
    }
}

@media (max-width: 768px) {
    .logo {
        left: 20px;
    }
    .logo-image {
        height: 40px;
        max-width: 160px;
    }
}

@media (max-width: 576px) {
    .logo {
        left: 15px;
    }
    .logo-image {
        height: 38px;
        max-width: 140px;
    }
}

@media (max-width: 480px) {
    .logo {
        left: 12px;
    }
    .logo-image {
        height: 35px;
        max-width: 120px;
    }
}

@media (max-width: 360px) {
    .logo {
        left: 10px;
    }
    .logo-image {
        height: 32px;
        max-width: 100px;
    }
}

/* 确保logo在header中正确对齐 */
.header .logo {
    display: flex;
    align-items: center;
    height: 100%;
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-image {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .logo-image {
        filter: invert(1);
    }
}

/* 打印样式 */
@media print {
    .logo-image {
        filter: none;
        height: 40px;
        max-width: 150px;
    }
}

/* 如果logo图片有透明背景，确保背景色 */
.logo-image {
    background: transparent;
}

/* 防止图片被拉伸 */
.logo-image {
    object-fit: contain;
    object-position: left center;
}

/* Top Bar 样式 */
.topbar {
    background-color: #000000;
    color: #ffffff;
    padding: 12px 0;
    text-align: center;
    position: relative;
    z-index: 1002;
    font-family: 'Arial', sans-serif;
}

.topbar-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

.topbar-text {
    color: #ffffff;
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 0.5px;
    margin: 0;
    display: block;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .topbar {
        padding: 10px 0;
    }
    
    .topbar-text {
        font-size: 12px;
        letter-spacing: 0.3px;
    }
}

@media (max-width: 480px) {
    .topbar {
        padding: 8px 0;
    }
    
    .topbar-text {
        font-size: 11px;
        letter-spacing: 0.2px;
        line-height: 1.4;
    }
}

/* 确保header在topbar下方 */
.header {
    position: relative;
    z-index: 1001;
}
        
        
        

        .nav {
            display: flex;
            list-style: none;
            gap: 40px;
            margin: 0 auto;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            text-decoration: none;
            color: #333;
            font-size: 16px;
            font-weight: 500;
            padding: 10px 0;
            transition: color 0.3s ease;
        }

        .nav-link:hover {
            color: #ff6b35;
        }

        .nav-link.active {
            color: #ff6b35;
            border-bottom: 2px solid #ff6b35;
        }

        /* 右上角功能区域 */
        .header-actions {
            position: absolute;
            right: 80px;
            display: flex;
            align-items: center;
            gap: 20px;
        }

        /* 搜索功能 - 修复版本 */
        .search-container {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-button {
            width: 24px;
            height: 24px;
            cursor: pointer;
            transition: color 0.3s ease;
            background: none;
            border: none;
            padding: 0;
            color: #333;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10;
        }

        .search-button:hover {
            color: #ff6b35;
        }

        .search-input {
            position: absolute;
            top: 50%;
            right: 30px;
            transform: translateY(-50%);
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 20px;
            padding: 8px 16px;
            width: 0;
            opacity: 0;
            transition: all 0.3s ease;
            outline: none;
            font-size: 14px;
            z-index: 5;
        }

        .search-input.active {
            width: 200px;
            opacity: 1;
        }

        .search-input:focus {
            border-color: #ff6b35;
            box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.1);
        }

        /* 侧边栏折叠按钮 */
        .sidebar-toggle {
            width: 24px;
            height: 6px;
            cursor: pointer;
            transition: color 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            background: none;
            border: none;
            padding: 0;
            color: #333;
        }

        .sidebar-toggle:hover {
            color: #ff6b35;
        }

        .hamburger-line {
            width: 100%;
            height: 2px;
            background-color: currentColor;
            transition: all 0.3s ease;
        }

        .sidebar-toggle.active .hamburger-line:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .sidebar-toggle.active .hamburger-line:nth-child(2) {
            opacity: 0;
        }

        .sidebar-toggle.active .hamburger-line:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }

        /* 侧边栏 */
        .sidebar {
            position: fixed;
            top: 0;
            right: -350px;
            width: 350px;
            height: 100vh;
            background: white;
            box-shadow: -2px 0 10px rgba(0,0,0,0.1);
            transition: right 0.3s ease;
            z-index: 1003;
            padding: 30px;
            overflow-y: auto;
        }

        .sidebar.active {
            right: 0;
        }

        .sidebar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #e0e0e0;
        }

        .sidebar-title {
            font-size: 18px;
            font-weight: bold;
            color: #000;
        }

        .sidebar-close {
            width: 24px;
            height: 24px;
            cursor: pointer;
            transition: color 0.3s ease;
            background: none;
            border: none;
            padding: 0;
            color: #333;
        }

        .sidebar-close:hover {
            color: #ff6b35;
        }

        .sidebar-nav {
            list-style: none;
        }

        .sidebar-nav-item {
            margin-bottom: 15px;
        }

        .sidebar-nav-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-decoration: none;
            color: #333;
            font-size: 16px;
            font-weight: 500;
            padding: 15px 0;
            border-bottom: 1px solid #f0f0f0;
            transition: color 0.3s ease;
        }

        .sidebar-nav-link:hover {
            color: #ff6b35;
        }

        .chevron-down {
            width: 16px;
            height: 16px;
            transition: transform 0.3s ease;
        }

        /* 子菜单样式 */
.sidebar-submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #f8f8f8;
    margin: 0 -30px;
    padding: 0 30px;
}

.sidebar-submenu.active {
    max-height: 300px; /* 根据需要调整高度 */
}

.sidebar-submenu-link {
    display: block;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    padding: 10px 0 10px 20px;
    border-bottom: 1px solid #e0e0e0;
    transition: color 0.3s ease;
}

.sidebar-submenu-link:hover {
    color: #ff6b35;
}

/* 箭头旋转动画 */
.sidebar-nav-item.active .chevron-down {
    transform: rotate(180deg);
}

        /* 遮罩层 */
        .sidebar-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 1002;
        }

        .sidebar-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* SVG图标样式 */
        .icon {
            width: 100%;
            height: 100%;
            fill: currentColor;
        }

        /* Dropdown Menu - 真正的全屏宽度 */
        /* Dropdown Menu - 修复定位问题 */
.dropdown {
    position: fixed;
    left: 0;
    right: 0;
    top: 100%; /* 关键修复：让dropdown紧贴header下方 */
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-radius: 0 0 8px 8px;
    padding: 40px 0;
    display: none;
    z-index: 1000;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    width: 100vw;
    min-height: 400px;
}

.dropdown.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    top: 100%; /* 确保显示时位置正确 */
}

        /* 统一的内容容器 */
        .dropdown-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 50px;
            height: 100%;
            display: flex;
            gap: 40px;
        }

        /* 左侧分类区域 - 统一宽度 */
        .dropdown-left {
            flex: 0 0 300px;
            display: flex;
            /*flex-direction: column;*/
            gap: 20px;
        }

        /* 右侧内容区域 - 自适应剩余宽度 */
        .dropdown-right {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        /* 分类样式 */
.category-section {
    margin-bottom: 20px;
}

.category-title {
    font-size: 16px;
    font-weight: bold;
    color: #000;
    margin-bottom: 15px;
}

.category-link {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0;
    display: block;
    transition: all 0.3s ease;
    border-radius: 4px;
    position: relative;
}

.category-link:hover {
    color: #ff6b35;
    padding-left: 10px;
}

/* 激活状态的分类链接 */
.category-link.active {
    color: #999;
    font-weight: 600;
    padding-left: 10px;
}

.category-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: #ff6b35;
    border-radius: 2px;
}

/* 右侧内容网格 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    height: 100%;
}

/* 图片画廊容器 */
.image-gallery {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    height: 100%;
}

.image-gallery.active {
    display: grid;
}

/* 图片卡片样式 */
.gallery-item {
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

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

.gallery-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    background: #f8f8f8;
    aspect-ratio: 1;
}

.gallery-image:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
}


/* 图片卡片样式 - 16:9比例 */
.nav-item[data-dropdown="recommend"] .gallery-image {
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    aspect-ratio: 16/9; /* 改为16:9比例 */
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 170px; /* 设置最小高度 */
    width: 100%; /* 添加宽度控制 */
    max-width: 300px; /* 设置最大宽度 */
}

/* 响应式宽度调整 */
@media (max-width: 1400px) {
    .nav-item[data-dropdown="recommend"] .gallery-image {
        margin: 8px;
        min-height: 180px;
        max-width: 280px; /* 稍微减少最大宽度 */
    }
}

@media (max-width: 1200px) {
    .nav-item[data-dropdown="recommend"] .gallery-image {
        margin: 6px;
        min-height: 150px;
        max-width: 250px; /* 进一步减少最大宽度 */
    }
}

@media (max-width: 1024px) {
    .nav-item[data-dropdown="recommend"] .gallery-image {
        margin: 5px;
        min-height: 120px;
        max-width: 200px; /* 继续减少最大宽度 */
    }
}

@media (max-width: 768px) {
    .nav-item[data-dropdown="recommend"] .gallery-image {
        margin: 4px;
        min-height: 100px;
        max-width: 150px; /* 小屏幕上更小的最大宽度 */
    }
}

.nav-item[data-dropdown="recommend"] .gallery-img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 保持图片比例，完整显示 */
    transition: all 0.4s ease;
    border-radius: 12px;
}

/* 只针对 recommend 下拉菜单的 announcement 部分 */
.nav-item[data-dropdown="recommend"] .blog-gallery {
    display: none;
    width: 100%;
    max-width: 100%;
    grid-column: 1 / -1; /* 跨越所有列 */
}

.nav-item[data-dropdown="recommend"] .blog-gallery.active {
    display: block;
}

.nav-item[data-dropdown="recommend"] .blog-content {
    padding: 20px 10px;
    width: 100%;
    max-width: 100%;
}

.nav-item[data-dropdown="recommend"] .blog-card {
    background: white;
    border-radius: 16px;
    padding: 32px 50px;
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    width: 100%;
    max-width: 100%;
    margin: 0;
}

.nav-item[data-dropdown="recommend"] .blog-title {
    font-size: 22px;
    font-weight: 600;
    color: #2c3e50;
    margin: 0 0 18px 0;
    line-height: 1.4;
}

.nav-item[data-dropdown="recommend"] .blog-description {
    font-size: 16px;
    color: #6c757d;
    margin: 0 0 22px 0;
    line-height: 1.6;
}

.nav-item[data-dropdown="recommend"] .blog-date {
    font-size: 15px;
    color: #8e9aaf;
    margin: 0 0 26px 0;
    font-style: italic;
}


/* 原有的内容卡片样式保持不变 */
.content-card {
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-grid,
    .image-gallery {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .category-link {
        padding: 6px 0;
        font-size: 13px;
    }
    
    .content-card {
        min-height: 150px;
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .content-grid,
    .image-gallery {
        gap: 10px;
    }
    
    .content-card {
        min-height: 120px;
        padding: 10px;
    }
}

        /* 品牌图片样式 */
.brand-image {
    max-width: 100%;
    max-height: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    transition: transform 0.3s ease;
}

        .content-text {
            color: #ff6b35;
            font-size: 12px;
            line-height: 1.4;
        }

        /* 产品网格 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .product-card {
            background: #fafafa;
            /* border: 1px solid #e0e0e0; */
            /* border-radius: 8px; */
            padding: 20px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }

        .card-image {
            background: #f0f0f0;
            height: 150px;
            border-radius: 8px;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .card-title {
            color: #ff6b35;
            font-size: 12px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-subtitle {
            color: #999;
            font-size: 14px;
            font-weight: 500;
        }

        /* Cases下拉特殊布局 */
        .cases-dropdown .dropdown-right {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 30px;
        }

        .cases-column {
            display: flex;
            flex-direction: column;
        }

        .cases-promo {
            flex: 1;
            min-width: 200px;
            text-align: center;
        }
        
        .promo-image {
            width: 300px;        /* 固定宽度 */
            height: 200px;       /* 固定高度 */
            object-fit: cover;   /* 保持比例，裁剪多余部分 */
            border-radius: 8px;
        }

        .promo-text {
            color: #ff6b35;
            font-size: 14px;
            text-align: center;
        }


        /* 搜索覆盖层样式 */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white; /* 改为纯白色 */
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.search-overlay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background-color: white;
    border-bottom: 1px solid #ddd;
}

.search-nav {
    display: flex;
    gap: 40px;
}

.search-nav-link {
    text-decoration: none;
    color: #333;
    font-size: 14px;
    font-weight: 400;
    transition: color 0.3s ease;
}

.search-nav-link:hover {
    color: #666;
}

.search-close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.search-close-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.search-close-btn .icon {
    width: 20px;
    height: 20px;
    fill: #333;
}

.search-main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 60px 40px;
    max-width: 600px;
}

.search-input-container {
    display: flex;
    align-items: center;
    width: 100%;
    margin-bottom: 40px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ccc;
}

.search-icon {
    width: 20px;
    height: 20px;
    fill: #666;
    margin-right: 15px;
}

.search-overlay-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 18px;
    color: #333;
    outline: none;
    padding: 5px 0;
}

.search-overlay-input::placeholder {
    color: #999;
}

.search-suggestions {
    width: 100%;
}

.suggestions-title {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin-bottom: 20px;
}

.suggestions-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.suggestion-item {
    display: block;
    padding: 10px 0;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.suggestion-item:hover {
    color: #333;
}

/* 隐藏原来的搜索输入框 */
.search-input {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-nav {
        display: none;
    }
    
    .search-main-content {
        padding: 40px 20px;
    }
    
    .search-overlay-header {
        padding: 15px 20px;
    }
}

/* 移动端响应式设计 */
@media (max-width: 768px) {
    /* Top Bar 移动端样式 - 增加高度 */
    .topbar {
        padding: 12px 0; /* 从 8px 增加到 12px */
        font-size: 12px;
        min-height: 40px; /* 添加最小高度 */
    }
    
    .topbar-container {
        padding: 0 15px;
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 40px; /* 确保容器有足够高度 */
    }
    
    .topbar-text {
        font-size: 11px;
        letter-spacing: 0.2px;
        line-height: 1.4;
        margin: 0;
    }

    /* Header 移动端样式 */
    .header {
        padding: 15px 20px;
        position: relative;
        display: flex;
        justify-content: space-between;
        align-items: center;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

    /* Logo 移动端样式 */
    .logo {
        position: static;
        left: auto;
        transform: none;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        height: auto;
        flex: 1;
    }

    .logo-image {
        height: 32px;
        max-width: 120px;
        min-width: 80px;
        object-fit: contain;
        object-position: left center;
    }

    /* 导航菜单隐藏 */
    .nav {
        display: none;
    }

    /* 右上角功能区域移动端样式 */
    .header-actions {
        position: static;
        right: auto;
        display: flex;
        align-items: center;
        gap: 20px; /* 增加间距 */
        margin-left: auto;
    }

    /* 搜索按钮移动端样式 - 放大 */
    .search-button {
        width: 28px; /* 从 20px 增加到 28px */
        height: 28px; /* 从 20px 增加到 28px */
        color: #333;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .search-button .icon {
        width: 24px; /* 从 20px 增加到 24px */
        height: 24px; /* 从 20px 增加到 24px */
    }

    /* 侧边栏按钮移动端样式 - 修复为三杠 */
    .sidebar-toggle {
        width: 28px; /* 从 20px 增加到 28px */
        height: 20px; /* 从 16px 增加到 20px */
        color: #333;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
        background: none;
        border: none;
        padding: 0;
        cursor: pointer;
    }

    .hamburger-line {
        width: 100%;
        height: 2px; /* 确保线条高度 */
        background-color: currentColor;
        transition: all 0.3s ease;
        border-radius: 1px;
    }

    /* 确保有三条线 */
    .sidebar-toggle::before,
    .sidebar-toggle::after {
        content: '';
        width: 100%;
        height: 2px;
        background-color: currentColor;
        transition: all 0.3s ease;
        border-radius: 1px;
    }

    /* 汉堡菜单动画 */
    .sidebar-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .sidebar-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .sidebar-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* 侧边栏移动端样式 */
    .sidebar {
        width: 100%;
        right: -100%;
        padding: 20px;
    }

    .sidebar.active {
        right: 0;
    }

    .sidebar-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

    .sidebar-title {
        font-size: 16px;
    }

    .sidebar-nav-link {
        font-size: 15px;
        padding: 12px 0;
    }

    .sidebar-submenu-link {
        font-size: 13px;
        padding: 8px 0 8px 15px;
    }

    /* 下拉菜单移动端隐藏 */
    .dropdown {
        display: none !important;
    }

    /* 搜索覆盖层移动端样式 */
    .search-overlay-header {
        padding: 15px 20px;
    }

    .search-main-content {
        padding: 40px 20px;
        max-width: 100%;
    }

    .search-overlay-input {
        font-size: 16px;
    }

    .suggestions-title {
        font-size: 15px;
    }

    .suggestion-item {
        font-size: 13px;
        padding: 8px 0;
    }
}

/* 超小屏幕样式 */
@media (max-width: 480px) {
    /* Top Bar 超小屏幕 - 保持高度 */
    .topbar {
        padding: 10px 0; /* 从 6px 增加到 10px */
        min-height: 36px;
    }
    
    .topbar-container {
        min-height: 36px;
    }
    
    .topbar-text {
        font-size: 10px;
        letter-spacing: 0.1px;
    }

    /* Header 超小屏幕 */
    .header {
        padding: 12px 30px;
    }

    .logo-image {
        height: 28px;
        max-width: 100px;
        min-width: 70px;
    }

    .header-actions {
        gap: 15px; /* 减少间距 */
    }

    /* 搜索按钮超小屏幕 */
    .search-button {
        width: 40px; /* 稍微小一点 */
        height: 40px;
    }

    .search-button .icon {
        width: 40px;
        height: 40px;
    }

    /* 侧边栏按钮超小屏幕 */
    .sidebar-toggle {
        width: 24px;
        height: 18px;
    }

    .hamburger-line {
        height: 1.5px;
    }

    

    .sidebar {
        padding: 15px;
    }

    .sidebar-title {
        font-size: 15px;
    }

    .sidebar-nav-link {
        font-size: 14px;
        padding: 10px 0;
    }

    .sidebar-submenu-link {
        font-size: 12px;
        padding: 6px 0 6px 12px;
    }
}

/* 极小屏幕样式 */
@media (max-width: 360px) {
    .topbar {
        padding: 8px 0;
        min-height: 32px;
    }
    
    .topbar-container {
        min-height: 32px;
    }
    
    .topbar-text {
        font-size: 9px;
    }

    .header {
        padding: 10px 12px;
    }

    .logo-image {
        height: 26px;
        max-width: 90px;
        min-width: 60px;
    }

    .header-actions {
        gap: 12px;
    }

    .search-button {
        width: 22px;
        height: 22px;
    }

    .search-button .icon {
        width: 18px;
        height: 18px;
    }

    .sidebar-toggle {
        width: 22px;
        height: 16px;
    }

    .hamburger-line {
        height: 1px;
    }

    .sidebar-toggle::before,
    .sidebar-toggle::after {
        height: 1px;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .topbar {
        padding: 8px 0;
        min-height: 32px;
    }
    
    .topbar-container {
        min-height: 32px;
    }
    
    .header {
        padding: 10px 20px;
    }
    
    .logo-image {
        height: 28px;
        max-width: 100px;
    }
}

/* 触摸设备优化 */
@media (max-width: 768px) and (pointer: coarse) {

    
    .sidebar-nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .suggestion-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}


/* 移动端Hero图片高度调整 */
@media (max-width: 768px) {
    .about-hero {
        height: 50vh; /* 移动端设置固定高度 */
        min-height: 300px; /* 最小高度保证 */
        max-height: 400px; /* 最大高度限制 */
    }
    
    .hero-full-image {
        width: 100%;
        height: 100%; /* 填满整个容器 */
        object-fit: cover; /* 保持比例裁剪 */
        object-position: center;
    }
}

/* 中等屏幕调整 */
@media (max-width: 992px) and (min-width: 769px) {
    .about-hero {
        height: 45vh;
        min-height: 280px;
    }
}

/* 小屏幕调整 */
@media (max-width: 480px) {
    .about-hero {
        height: 45vh; /* 稍微降低一点 */
        min-height: 250px;
        max-height: 350px;
    }
}

/* 超小屏幕调整 */
@media (max-width: 360px) {
    .about-hero {
        height: 40vh;
        min-height: 200px;
        max-height: 300px;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .about-hero {
        height: 60vh; /* 横屏时更高 */
        min-height: 200px;
    }
}