.main-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        .back-btn {
            margin-bottom: 20px;
        }
        
        .back-btn a {
            text-decoration: none;
            color: #5b6cff;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        
        .back-btn a:hover {
            background-color: #f0f2ff;
            transform: translateX(-5px);
        }
        
        .back-btn i {
            margin-right: 8px;
        }
        .entry-header-box {
            margin-bottom: 40px;
        }
        
        .entry-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: #333;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        
        .entry-subtitle {
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 20px;
        }
        
        .entry-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .entry-category {
            background: linear-gradient(135deg, #f0f2ff, #e6e9ff);
            color: #5b6cff;
            padding: 5px 15px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        
        .entry-tag {
            background: #f0f0f0;
            color: #666;
            padding: 5px 15px;
            border-radius: 30px;
            font-size: 0.9rem;
        }
        
        /* 词条内容 */
        .entry-content {
            background: white;
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            margin-bottom: 40px;
        }
        
        .content-section {
            margin-bottom: 30px;
        }
        
        .content-section h2 {
            font-size: 1.6rem;
            color: #333;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f2ff;
        }
        
        .content-section p {
            color: #444;
            margin-bottom: 15px;
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .content-section ul, .content-section ol {
            margin-left: 20px;
            margin-bottom: 15px;
            color: #444;
        }
        
        .content-section li {
            margin-bottom: 8px;
        }
        
        .highlight-box {
            background: linear-gradient(135deg, #f0f2ff, #e6e9ff);
            border-left: 4px solid #5b6cff;
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
        }
        
        .highlight-box p {
            margin-bottom: 0;
            font-style: italic;
            color: #5b6cff;
        }
        
        /* 相关词条 */
        .related-entries {
            margin-top: 50px;
        }
        
        .related-title {
            font-size: 1.6rem;
            color: #333;
            margin-bottom: 20px;
        }
        
        .related-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }
        
        .related-item {
            background: white;
            border-radius: 12px;
            padding: 15px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border: 1px solid #f0f2ff;
            text-decoration: none;
            color: inherit;
            display: block;
        }
        
        .related-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(91, 108, 255, 0.1);
            border-color: #d9ddff;
        }
        
        .related-item-name {
            font-size: 1.1rem;
            color: #333;
            margin-bottom: 5px;
        }
        
        .related-item-desc {
            color: #666;
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-container {
                padding: 0 15px;
                height: 60px;
            }
            
            .logo-text {
                font-size: 22px;
            }
            
            .nav-menu li {
                margin-left: 15px;
            }
            
            .nav-menu a {
                font-size: 15px;
                padding: 6px 12px;
            }
            
            .entry-title {
                font-size: 2rem;
            }
            
            .entry-content {
                padding: 25px;
            }
            
            .related-list {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 480px) {
            .nav-menu li {
                margin-left: 10px;
            }
            
            .nav-menu a {
                padding: 5px 10px;
            }
            
            .entry-title {
                font-size: 1.8rem;
            }
            
            .entry-subtitle {
                font-size: 1.1rem;
            }
            
            .entry-content {
                padding: 20px;
            }
        }