* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            padding: 0;
            background: #ffffff;
        }
        
        /* 头部标题 */
        .header {
            padding: 0px 10px;
            text-align: center;
            color: white;
            background: url('../../images/M94.png') no-repeat center center/cover;
            position: relative;
        }
        
        .header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
        }
        
        .header-content {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
        }

        .header h1 {
            font-family: "Times New Roman", serif;
            font-size: 42px;
            font-weight: 400;
            margin-bottom: 10px;
        }
        
        .header p {
            font-size: 18px;
            font-weight: 300;
            max-width: 800px;
            margin: 0 auto;
        }

        /* 导航条 */
        .topnav {
            background-color: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        
        .topnav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 导航条链接 */
        .topnav a {
            display: block;
            color: #333;
            text-align: center;
            padding: 16px 20px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            transition: background-color 0.3s;
        }

        /* 链接颜色修改 */
        .topnav a:hover {
            background-color: #f5f5f5;
            color: #0056b3;
        }
        
        .topnav .right {
            display: flex;
        }

        /* 创建两列 */
        .content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 左侧主内容 */
        .leftcolumn {   
            flex: 1 1 70%;
            min-width: 300px;
        }

        /* 右侧栏 */
        .rightcolumn {
            flex: 1 1 25%;
            min-width: 280px;
        }

        /* 图像部分 */
        .article-image {
            width: 100%;
            height: 250px;
            background-color: #f5f5f5;
            margin-bottom: 15px;
            overflow: hidden;
            position: relative;
        }
        
        .article-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .article-image:hover img {
            transform: scale(1.05);
        }

        /* 文章卡片效果 */
        .card {
            background-color: white;
            margin-top: 20px;
            border-radius: 4px;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
            transition: all 0.3s cubic-bezier(.25,.8,.25,1);
            opacity: 0;
            transform: translateY(30px);
        }
        
        .card:hover {
            box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
        }

        .card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .card-content {
            padding: 20px;
        }
        
        .card h2 {
            font-family: "Times New Roman", serif;
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 10px;
            color: #333;
        }
        
        .card h2 a {
            color: #333;
            text-decoration: none;
        }
        
        .card h2 a:hover {
            color: #0056b3;
        }
        
        .card h5 {
            font-size: 14px;
            color: #666;
            margin-bottom: 15px;
            font-weight: 400;
        }
        
        .card p {
            margin-bottom: 15px;
            color: #555;
        }
        
        .read-more {
            display: inline-block;
            color: #0056b3;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .read-more:hover {
            color: #003d80;
            text-decoration: underline;
        }

        /* 右侧栏样式 */
        .rightcolumn .card {
            background-color: #f8f9fa;
        }
        
        .rightcolumn h2, .rightcolumn h3 {
            font-family: "Helvetica Neue", Arial, sans-serif;
            font-size: 18px;
            font-weight: 500;
            margin-bottom: 15px;
            color: #333;
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
        }
        
        .rightcolumn .fakeimg {
            background-color: #e9ecef;
            width: 100%;
            height: 120px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #666;
        }
        
        .rightcolumn .popular-post {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .rightcolumn .popular-post:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        .rightcolumn .popular-post h4 {
            font-size: 16px;
            font-weight: 400;
            margin-bottom: 5px;
        }
        
        .rightcolumn .popular-post h4 a {
            color: #333;
            text-decoration: none;
        }
        
        .rightcolumn .popular-post h4 a:hover {
            color: #0056b3;
        }
        
        .rightcolumn .popular-post p {
            font-size: 14px;
            color: #666;
        }

        /* 底部 */
        .footer {
            padding: 40px 20px;
            text-align: center;
            background: #333;
            color: #fff;
            margin-top: 40px;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer h2 {
            font-family: "Times New Roman", serif;
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 20px;
        }
        
        .footer p {
            max-width: 600px;
            margin: 0 auto 20px;
            color: #ccc;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: #fff;
        }
        
        .footer-social {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .footer-social a {
            color: #fff;
            font-size: 20px;
            transition: color 0.3s;
        }
        
        .footer-social a:hover {
            color: #ccc;
        }

        /* 响应式布局 */
        @media screen and (max-width: 800px) {
            .leftcolumn, .rightcolumn {   
                width: 100%;
                padding: 0;
            }
            
            .header {
                padding: 100px 20px;
            }
            
            .header h1 {
                font-size: 32px;
            }
            
            .topnav-container {
                flex-direction: column;
            }
            
            .topnav a {
                padding: 12px 16px;
            }
            
            .topnav .right {
                width: 100%;
                justify-content: center;
            }
        }

        /* 滚动动画 */
        .card {
            transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease;
        }
        
        /* 平滑滚动 */
        html {
            scroll-behavior: smooth;
        }