:root {
            --primary-color: #2a5caa;
            --secondary-color: #ff7e30;
            --accent-color: #00c3a5;
            --light-color: #f8f9fa;
            --dark-color: #2c3e50;
            --gray-color: #6c757d;
            --light-gray: #e9ecef;
            --border-radius: 12px;
            --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --base-font-size: 16px; /* 基础字体大小 */
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            font-size: var(--base-font-size);
        }
        
        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            background-color: #f9fbfd;
            line-height: 1.7; /* 增加行高，提高可读性 */
            overflow-x: hidden;
            -webkit-text-size-adjust: 100%; /* 防止字体自动调整 */
            text-size-adjust: 100%;
        }
        
        /* 修复页头样式 - 确保不影响原有导航 */
        header.navbar,
        #header,
        .header {
            position: relative !important;
            z-index: 1030;
            background-color: #fff !important;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1) !important;
        }
        
        /* 确保导航链接可读性 */
        .navbar-nav .nav-link {
            font-size: 1rem;
            color: #333 !important;
            font-weight: 500;
        }
        
        .navbar-nav .nav-link:hover {
            color: var(--primary-color) !important;
        }
        
        /* 导航修复结束 */
        
        /* 栏目横幅 */
        .banner-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1a4293 100%);
            color: white;
            padding: 100px 0 70px; /* 增加顶部padding，避免与导航重叠 */
            margin-bottom: 60px;
            position: relative;
            overflow: hidden;
        }
        
        .banner-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path fill="%23ffffff10" d="M0,0 L100,0 L100,100 Z"/></svg>');
            background-size: cover;
        }
        
        .banner-section h1 {
            font-weight: 700;
            font-size: 2.8rem; /* 标题字体大小 */
            margin-bottom: 25px;
            position: relative;
            z-index: 2;
            line-height: 1.3;
        }
        
        .banner-section .lead {
            font-size: 1.25rem; /* 增加描述字体大小 */
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.95;
            position: relative;
            z-index: 2;
            line-height: 1.6;
        }
        
        .section-title {
            font-weight: 700;
            color: var(--dark-color);
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            font-size: 1.8rem; /* 增加区域标题大小 */
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            border-radius: 2px;
        }
        
        .section-title.center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        
        /* 问题分类导航 */
        .category-nav {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 25px;
            margin-bottom: 40px;
            position: sticky;
            top: 20px;
            z-index: 100;
        }
        
        .category-nav h3 {
            font-size: 1.35rem; /* 增加分类标题大小 */
            margin-bottom: 20px;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }
        
        .category-nav h3 i {
            margin-right: 10px;
            color: var(--secondary-color);
        }
        
        .nav-category-list {
            list-style: none;
            padding: 0;
        }
        
        .nav-category-list li {
            margin-bottom: 12px;
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .nav-category-list li a {
            display: block;
            padding: 14px 15px; /* 增加padding，更容易点击 */
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 500;
            font-size: 1.05rem; /* 增加分类链接字体大小 */
            transition: var(--transition);
            border-left: 4px solid transparent;
        }
        
        .nav-category-list li a:hover {
            background-color: rgba(42, 92, 170, 0.05);
            border-left-color: var(--primary-color);
            padding-left: 20px;
        }
        
        .nav-category-list li.active a {
            background-color: rgba(42, 92, 170, 0.1);
            border-left-color: var(--primary-color);
            color: var(--primary-color);
            font-weight: 600;
        }
        
        /* 问题卡片设计 */
        .question-card {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 0;
            margin-bottom: 30px;
            transition: var(--transition);
            border: 1px solid transparent;
            overflow: hidden;
        }
        
        .question-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
            border-color: rgba(42, 92, 170, 0.2);
        }
        
        .question-card-header {
            padding: 25px 30px 20px;
            border-bottom: 1px solid var(--light-gray);
            display: flex;
            align-items: flex-start;
        }
        
        .question-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: white;
            font-weight: 700;
            font-size: 1.2rem;
            border-radius: 50%;
            margin-right: 15px;
            flex-shrink: 0;
        }
        
        .question-title {
            font-size: 1.35rem; /* 增加问题标题大小 */
            font-weight: 600;
            line-height: 1.4;
            color: var(--dark-color);
            margin-bottom: 0;
        }
        
        .question-title a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .question-title a:hover {
            color: var(--primary-color);
        }
        
        .question-card-body {
            padding: 20px 30px;
        }
        
        .question-excerpt {
            color: var(--gray-color);
            margin-bottom: 20px;
            font-size: 1.05rem; /* 增加问题摘要大小 */
            line-height: 1.6;
        }
        
        .question-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--gray-color);
            font-size: 0.95rem; /* 增加元信息大小 */
        }
        
        .question-date {
            display: flex;
            align-items: center;
        }
        
        .question-date i {
            margin-right: 8px;
            color: var(--primary-color);
        }
        
        .question-views {
            display: flex;
            align-items: center;
        }
        
        .question-views i {
            margin-right: 8px;
            color: var(--secondary-color);
        }
        
        .read-more-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px; /* 增加按钮padding */
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem; /* 增加按钮字体大小 */
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        
        .read-more-btn:hover {
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(42, 92, 170, 0.3);
        }
        
        .read-more-btn i {
            margin-left: 8px;
            transition: var(--transition);
        }
        
        .read-more-btn:hover i {
            transform: translateX(5px);
        }
        
        /* 热门问题侧边栏 */
        .sidebar-card {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 25px;
            margin-bottom: 30px;
        }
        
        .sidebar-card h3 {
            font-size: 1.35rem; /* 增加侧边栏标题大小 */
            margin-bottom: 20px;
            color: var(--dark-color);
            display: flex;
            align-items: center;
        }
        
        .sidebar-card h3 i {
            margin-right: 10px;
            color: var(--secondary-color);
        }
        
        .popular-question {
            display: flex;
            align-items: center;
            padding: 16px 0; /* 增加热门问题padding */
            border-bottom: 1px solid var(--light-gray);
            transition: var(--transition);
        }
        
        .popular-question:last-child {
            border-bottom: none;
        }
        
        .popular-question:hover {
            transform: translateX(5px);
        }
        
        .popular-question-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: rgba(42, 92, 170, 0.1);
            color: var(--primary-color);
            font-weight: 700;
            border-radius: 8px;
            margin-right: 15px;
            flex-shrink: 0;
            font-size: 1rem; /* 增加数字大小 */
        }
        
        .popular-question-content {
            flex-grow: 1;
        }
        
        .popular-question-content a {
            font-weight: 600;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            display: block;
            margin-bottom: 5px;
            line-height: 1.5;
            font-size: 1.05rem; /* 增加热门问题标题大小 */
        }
        
        .popular-question-content a:hover {
            color: var(--primary-color);
        }
        
        .popular-question-views {
            font-size: 0.95rem; /* 增加浏览次数大小 */
            color: var(--gray-color);
            display: flex;
            align-items: center;
        }
        
        .popular-question-views i {
            margin-right: 5px;
            color: var(--secondary-color);
        }
        
        /* 推荐展会样式 */
        .expo-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            margin-bottom: 20px;
        }
        
        .expo-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }
        
        .expo-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        
        .expo-card-body {
            padding: 20px;
        }
        
        .expo-card-title {
            font-weight: 600;
            font-size: 1.15rem; /* 增加展会标题大小 */
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .expo-card-title a {
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .expo-card-title a:hover {
            color: var(--primary-color);
        }
        
        .expo-card-date {
            font-size: 0.95rem; /* 增加日期字体大小 */
            color: var(--gray-color);
            display: flex;
            align-items: center;
        }
        
        .expo-card-date i {
            margin-right: 8px;
            color: var(--primary-color);
        }
        
        /* 分页样式 */
        .pagination-container {
            margin-top: 60px;
        }
        
        .custom-pagination .page-item .page-link {
            border: none;
            color: var(--dark-color);
            border-radius: 8px;
            margin: 0 5px;
            padding: 12px 20px; /* 增加分页按钮padding */
            font-weight: 600;
            transition: var(--transition);
            font-size: 1.05rem; /* 增加分页字体大小 */
        }
        
        .custom-pagination .page-item.active .page-link {
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            color: white;
        }
        
        .custom-pagination .page-item .page-link:hover {
            background-color: rgba(42, 92, 170, 0.1);
            color: var(--primary-color);
        }
        
        /* 页脚样式 */
        .footer {
            background-color: var(--dark-color);
            color: #ddd;
            padding: 70px 0 30px;
            margin-top: 80px;
        }
        
        .footer h5 {
            color: white;
            font-weight: 600;
            margin-bottom: 25px;
            font-size: 1.25rem; /* 增加页脚标题大小 */
        }
        
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            display: block;
            margin-bottom: 12px;
            transition: var(--transition);
            font-size: 1.05rem; /* 增加页脚链接大小 */
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 8px;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 25px;
            margin-top: 50px;
            text-align: center;
            color: #aaa;
            font-size: 1rem; /* 增加页脚底部字体大小 */
        }
        
        /* 徽章样式 */
        .badge {
            font-size: 0.9rem;
            padding: 8px 14px;
            border-radius: 20px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            html {
                font-size: 15.5px;
            }
        }
        
        @media (max-width: 992px) {
            html {
                font-size: 15px;
            }
            
            .banner-section h1 {
                font-size: 2.2rem;
            }
            
            .category-nav {
                position: static;
                margin-bottom: 40px;
            }
            
            .section-title {
                font-size: 1.6rem;
            }
        }
        
        @media (max-width: 768px) {
            html {
                font-size: 14.5px;
            }
            
            .banner-section {
                padding: 90px 0 40px;
            }
            
            .banner-section h1 {
                font-size: 1.9rem;
            }
            
            .banner-section .lead {
                font-size: 1.15rem;
            }
            
            .question-card-header {
                padding: 20px;
            }
            
            .question-card-body {
                padding: 20px;
            }
            
            .question-title {
                font-size: 1.2rem;
            }
            
            .question-meta {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .question-views {
                margin-top: 10px;
            }
            
            .section-title {
                font-size: 1.4rem;
            }
        }
        
        @media (max-width: 576px) {
            .banner-section h1 {
                font-size: 1.7rem;
            }
            
            .banner-section .lead {
                font-size: 1.1rem;
            }
            
            .question-number {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            
            .question-title {
                font-size: 1.15rem;
            }
            
            .question-excerpt {
                font-size: 1rem;
            }
            
            .section-title {
                font-size: 1.3rem;
            }
        }
        
        /* 微信端优化 */
        @media (max-width: 767px) {
            /* 移动端字体调整 */
            body {
                font-size: 16px; /* 移动端基础字体大小 */
                line-height: 1.7;
            }
            
            .question-excerpt {
                font-size: 16px;
                line-height: 1.7;
            }
            
            /* 防止微信调整字体大小 */
            .weixin-font-fix {
                -webkit-text-size-adjust: 100% !important;
                text-size-adjust: 100% !important;
                max-width: 100%;
                overflow-x: hidden;
            }
            
            /* 移动端触摸目标优化 */
            .read-more-btn,
            .nav-category-list li a,
            .custom-pagination .page-item .page-link {
                min-height: 44px; /* 苹果推荐的最小触摸目标尺寸 */
                display: flex;
                align-items: center;
            }
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
        }
        
        /* 修复原有CSS可能导致的冲突 */
        .container, .container-fluid, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
            padding-left: 15px;
            padding-right: 15px;
        }
        
        /* 确保Bootstrap栅格系统正常工作 */
        .row {
            margin-left: -15px;
            margin-right: -15px;
        }
        
        .col, .col-1, .col-10, .col-11, .col-12, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-auto, .col-lg, .col-lg-1, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-auto, .col-md, .col-md-1, .col-md-10, .col-md-11, .col-md-12, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-auto, .col-sm, .col-sm-1, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-auto, .col-xl, .col-xl-1, .col-xl-10, .col-xl-11, .col-xl-12, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6, .col-xl-7, .col-xl-8, .col-xl-9, .col-xl-auto {
            padding-left: 15px;
            padding-right: 15px;
        }