/* ==========================================================================
           1. 承袭全局核心变量与基础样式
           ========================================================================== */
        :root {
            --primary-color: #0056b3;
            --secondary-color: #ff6600;
            --text-dark: #333333;
            --bg-light: #f8f9fa;
            --border-color: #e0e0e0;
        }

        * { 
            box-sizing: border-box; 
            margin: 0; 
            padding: 0; 
        }

        html { 
            scroll-behavior: smooth; 
            scroll-padding-top: 130px; 
        }

        body { 
            font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif; 
            line-height: 1.6; 
            color: var(--text-dark); 
            background-color: #fff; 
            -webkit-font-smoothing: antialiased; 
        }

        .container { 
            width: 100%; 
            max-width: 1200px; 
            margin: 0 auto; 
            padding: 0 20px; 
        }
        
        /* 按钮公用样式 */
        .btn { 
            display: inline-block; 
            background: var(--secondary-color); 
            color: #fff; 
            padding: 12px 28px; 
            text-decoration: none; 
            border-radius: 4px; 
            font-weight: bold; 
            transition: background 0.3s; 
            text-align: center; 
            font-size: 1rem; 
            border: none; 
            cursor: pointer; 
        }
        .btn:hover { 
            background: #e05500; 
        }

        /* ==========================================================================
           2. Header 头部样式
           ========================================================================== */
        header { 
            background: #fff; 
            box-shadow: 0 2px 10px rgba(0,0,0,0.05); 
            position: sticky; 
            top: 0; 
            z-index: 1000; 
        }
        .header-top { 
            display: flex; 
            justify-content: space-between; 
            align-items: center; 
            padding: 15px 0; 
            border-bottom: 1px solid #f1f3f5; 
        }
        .logo { 
            flex: 0 0 auto; 
        }
		
		        .bt { font-size: 1.5rem; color: var(--primary-color); line-height: 1.2; font-weight: 700; }
		.logo a {text-decoration: none;}
		
        .logo h1 { 
            font-size: 1.5rem; 
            color: var(--primary-color); 
            line-height: 1.2; 
            font-weight: 700; 
        }
        .logo span { 
            font-size: 0.85rem; 
            color: #666; 
            display: block; 
            margin-top: 4px; 
            letter-spacing: 1px; 
        }
        .header-rt { 
            text-align: right; 
            flex: 0 0 auto; 
        }
        .hotline { 
            font-size: 1.4rem; 
            color: var(--secondary-color); 
            font-weight: bold; 
            text-decoration: none; 
            display: block; 
        }
        .main-nav { 
            background: #fff; 
            padding: 10px 0; 
            display: block; 
        }
        .nav-list { 
            display: flex; 
            list-style: none; 
            gap: 40px; 
            justify-content: center; 
            align-items: center; 
        }
        .nav-list a { 
            text-decoration: none; 
            color: #495057; 
            font-weight: 500; 
            font-size: 1.05rem; 
            transition: all 0.2s; 
            padding: 5px 0; 
            white-space: nowrap; 
        }
        .nav-list a:hover, .nav-list .active { 
            color: var(--primary-color); 
            border-bottom: 2px solid var(--primary-color); 
        }
        .menu-toggle, .menu-btn { 
            display: none; 
        }

        /* ==========================================================================
           3. 面包屑导航样式
           ========================================================================== */
        .breadcrumb { 
            background: var(--bg-light); 
            padding: 12px 0; 
            border-bottom: 1px solid var(--border-color); 
            font-size: 0.9rem; 
        }
        .breadcrumb-list { 
            display: flex; 
            list-style: none; 
            gap: 8px; 
            color: #6c757d; 
            flex-wrap: wrap;
        }
        .breadcrumb-list a { 
            color: #495057; 
            text-decoration: none; 
        }
        .breadcrumb-list a:hover { 
            color: var(--primary-color); 
            text-decoration: underline; 
        }
        .breadcrumb-list li:not(:last-child)::after { 
            content: '/'; 
            margin-left: 8px; 
            color: #adb5bd; 
        }
        .breadcrumb-list li:last-child { 
            color: var(--primary-color); 
            font-weight: 500; 
        }

        /* ==========================================================================
           4. 详情页排版与单栏布局样式
           ========================================================================== */
        .article-wrapper {
            padding: 30px 0 60px;
            background: #fff;
        }
        
        /* 横幅转化卡片 */
        .top-cta-banner {
            background: linear-gradient(135deg, #0056b3 0%, #003d82 100%);
            color: #fff;
            border-radius: 6px;
            padding: 25px 30px;
            margin-bottom: 35px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 15px rgba(0, 86, 179, 0.1);
        }
        .cta-info h4 { font-size: 1.4rem; margin-bottom: 6px; letter-spacing: 0.5px; }
        .cta-info p { font-size: 0.95rem; color: #e8f4ff; }
        .top-cta-banner .btn { flex: 0 0 auto; margin-left: 20px; box-shadow: 0 4px 10px rgba(255, 102, 0, 0.3); }

        /* 文章主体容器：保持与列表页一致的单栏 960px 逻辑 */
        .article-main {
            width: 100%;
            max-width: 960px;
            margin: 0 auto;
        }

        /* 文章头部区域 */
        .article-header {
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
            margin-bottom: 30px;
        }
        .article-title {
            font-size: 2rem;
            color: #111;
            line-height: 1.4;
            margin-bottom: 15px;
            font-weight: bold;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            font-size: 0.9rem;
            color: #6c757d;
            align-items: center;
            flex-wrap: wrap;
        }
        .article-cate-tag {
            background: #e8f4ff;
            color: var(--primary-color);
            padding: 3px 10px;
            border-radius: 3px;
            font-weight: 500;
        }

        /* 导语/摘要样式 */
        .article-excerpt {
            background: var(--bg-light);
            border-left: 4px solid var(--primary-color);
            padding: 15px 20px;
            color: #555;
            font-size: 1rem;
            margin-bottom: 30px;
            border-radius: 0 4px 4px 0;
            text-align: justify;
        }

        /* 富文本排版优化 */
        .article-content {
            font-size: 1.05rem;
            color: #333;
            line-height: 1.8;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
            text-indent: em; /* 中文首行缩进 */	
        }
			
        .article-content h2 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 35px 0 15px;
            padding-left: 10px;
            border-left: 4px solid var(--secondary-color);
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 1.25rem;
            color: #111;
            margin: 25px 0 12px;
            font-weight: bold;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 20px;
            padding-left: 40px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content strong {
            color: #000;
        }
        
        /* 图纸/图片容器 */
        .article-content .img-box {
            text-align: center;
            margin: 25px 0;
            text-indent: 0;
        }
        .article-content .img-box img {
            max-width: 100%;
            height: auto;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 5px;
        }
        .article-content .img-box span {
            display: block;
            font-size: 0.85rem;
            color: #666;
            margin-top: 8px;
        }

        /* 上下篇翻页组件 */
        .article-post-nav {
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 0.95rem;
        }
        .article-post-nav p {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            color: #6c757d;
        }
        .article-post-nav a {
            color: #333;
            text-decoration: none;
            transition: color 0.2s;
            margin-left: 5px;
        }
        .article-post-nav a:hover {
            color: var(--secondary-color);
        }

        /* ==========================================================================
           5. Footer 页脚样式
           ========================================================================== */
        footer { 
            background: #212529; 
            color: #b5b9bd; 
            padding: 40px 0; 
            text-align: center; 
            font-size: 0.9rem; 
            line-height: 1.8; 
        }
        footer p { 
            margin-bottom: 8px; 
        }
        footer p strong { 
            color: #fff; 
        }
        footer a { 
            color: #fff; 
            text-decoration: none; 
        }
        footer a:hover { 
            text-decoration: underline; 
        }

        /* ==========================================================================
           6. 严格响应式适配断点
           ========================================================================== */
        @media (max-width: 992px) {
            .nav-list { gap: 20px; }
            .logo h1 { font-size: 1.3rem; }
            .hotline { font-size: 1.2rem; }
            .top-cta-banner { padding: 20px; }
            .cta-info h4 { font-size: 1.2rem; }
            .article-title { font-size: 1.6rem; }
        }

        @media (max-width: 768px) {
            html { scroll-padding-top: 90px; }
            .header-top { padding: 10px 0; position: relative; }
            .logo h1 { font-size: 1.1rem; }
            .logo span { font-size: 0.75rem; letter-spacing: 0; }
            .header-rt { margin-right: 45px; text-align: right; }
            .hotline { font-size: 1rem; }
            
            .menu-btn { 
                display: block; 
                position: absolute; 
                right: 20px; 
                top: 50%; 
                transform: translateY(-50%); 
                cursor: pointer; 
                padding: 10px 0; 
                z-index: 1002; 
            }
            .menu-btn .icon-bar { 
                display: block; 
                width: 22px; 
                height: 2px; 
                background: #333; 
                margin: 4px 0; 
                transition: all 0.2s; 
            }
            
            .main-nav { 
                display: block; 
                position: absolute; 
                top: 100%; 
                left: 0; 
                right: 0; 
                background: #fff; 
                border-top: 1px solid var(--border-color); 
                border-bottom: 2px solid var(--primary-color); 
                max-height: 0; 
                overflow: hidden; 
                opacity: 0; 
                transition: all 0.3s ease-in-out; 
                padding: 0; 
            }
            .nav-list { flex-direction: column; gap: 0; width: 100%; padding: 10px 0; }
            .nav-list li { width: 100%; text-align: center; }
            .nav-list a { display: block; padding: 12px 0; font-size: 1rem; border-bottom: 1px solid #f8f9fa; }
            .nav-list li:last-child a { border-bottom: none; }
            .nav-list a:hover { border-bottom: none; background: var(--bg-light); }
            
            .menu-toggle:checked ~ .main-nav { max-height: 400px; opacity: 1; }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(2) { opacity: 0; }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

            .top-cta-banner { flex-direction: column; text-align: center; gap: 15px; }
            .top-cta-banner .btn { margin-left: 0; width: 100%; }
            
            /* 移动端文章排版优化 */
            .article-title { font-size: 1.35rem; }
            .article-meta { gap: 10px; font-size: 0.8rem; }
            .article-excerpt { font-size: 0.9rem; padding: 12px 15px; }
            .article-content { font-size: 0.95rem; }
            .article-content h2 { font-size: 1.25rem; margin: 25px 0 12px; }
            .article-content p { margin-bottom: 15px; }
        }

        @media (max-width: 414px) {
            .header-rt p { display: none; }
            .logo h1 { font-size: 1rem; }
        }
		
		
		/* ==========================================================================
   白油叶片过滤机 - 参数与选型表格专属样式
   ========================================================================== */

/* 1. 标题样式优化 */
h3[style*="text-align: left"] {
    font-size: 1.3rem;
    color: #111;
    position: relative;
    padding-left: 12px;
    margin: 35px 0 15px 0;
    font-weight: bold;
    letter-spacing: 0.5px;
}

/* 标题左侧的专业蓝色装饰竖线 */
h3[style*="text-align: left"]::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    background-color: #0056b3; /* 承袭高服主色调 */
    border-radius: 2px;
}

/* 2. 表格容器：实现移动端无缝横向滚动，防止撑破排版 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
    font-size: 0.95rem;
    color: #333;
    text-align: left;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border-radius: 4px;
    overflow: hidden; /* 配合圆角使用 */
    border: 1px solid #e0e0e0;
}

/* 3. 表头样式：高端深邃工业蓝 */
table thead tr.firstRow,
table thead tr {
    background: linear-gradient(135deg, #0056b3 0%, #003d82 100%);
    color: #ffffff;
    font-weight: 600;
    letter-spacing: 0.5px;
}

table th {
    padding: 14px 16px;
    font-size: 0.95rem;
    border: none;
}

/* 4. 表体行与单元格样式 */
table tbody tr {
    transition: background-color 0.2s ease;
    background-color: #ffffff;
}

/* 隔行变色：提升数据表的可读性 */
table tbody tr:nth-child(even) {
    background-color: #f8f9fa; 
}

/* 悬浮高亮效果 */
table tbody tr:hover {
    background-color: #e8f4ff; /* 浅蓝色高亮 */
}

table td {
    padding: 12px 16px;
    border-bottom: 1px solid #eef0f2;
    line-height: 1.5;
    vertical-align: middle;
}

/* 5. 增强特定列的视觉动线 */
/* 参数范围列、推荐处理量列：字体微微加粗，呈工业严谨感 */
table tbody td:nth-child(2) {
    font-weight: 500;
    color: #111;
}

/* ==========================================================================
   移动端响应式特别适配
   ========================================================================== */
@media (max-width: 768px) {
    /* 手机端如果字数过多，允许表格内部横向滑动，而不会破坏主列表布局 */
    table {
       
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap; /* 确保数据不挤压换行 */
    }
    
    table th, table td {
        padding: 10px 12px;
        font-size: 0.88rem;
    }
}