/* 全局样式 */
        .vn-container * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        .vn-container {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: #333;
            line-height: 1.6;
            padding: 20px;
            min-height: 100vh;
        }
        
        .vn-main-content {
            max-width: 1200px;
            margin: 0 auto 0 calc(200px + 40px); /* 为右侧导航留出空间 */
            padding: 40px;
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            min-height: 800px;
        }
        
        .vn-main-content h1 {
            font-size: 36px;
            margin-bottom: 30px;
            color: #2c3e50;
        }
        
        .vn-main-content p {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
            color: #555;
        }
        
        /* 右侧固定竖版导航菜单 */
        .vn-vertical-nav {
            position: fixed;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(44, 62, 80, 0.95);
            border-radius: 15px;
            padding: 20px 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
            z-index: 1000;
            transition: all 0.3s ease;
            width: 180px;
        }
        
        .vn-vertical-nav:hover {
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
            background: rgba(44, 62, 80, 1);
        }
        
        .vn-nav-title {
            font-size: 14px;
            font-weight: bold;
            color: #ecf0f1;
            text-align: center;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(236, 240, 241, 0.2);
        }
        
        .vn-nav-links {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        
        .vn-nav-link {
            display: block;
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            text-align: center;
            padding: 10px;
            border-radius: 8px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            animation: colorCycle 5s infinite alternate;
        }
        
        .vn-nav-link:hover {
            transform: translateX(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            z-index: 1;
        }
        
        .vn-nav-link::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: all 0.5s ease;
        }
        
        .vn-nav-link:hover::before {
            left: 100%;
        }
        
        /* 随机颜色和循环动画 */
        @keyframes colorCycle {
            0% {
                background: rgba(52, 152, 219, 0.8);
            }
            25% {
                background: rgba(231, 76, 60, 0.8);
            }
            50% {
                background: rgba(46, 204, 113, 0.8);
            }
            75% {
                background: rgba(155, 89, 182, 0.8);
            }
            100% {
                background: rgba(241, 196, 15, 0.8);
            }
        }
        
        /* 为每个链接添加不同的动画延迟 */
        .vn-nav-link:nth-child(1) {
            animation-delay: 0s;
        }
        
        .vn-nav-link:nth-child(2) {
            animation-delay: 0.5s;
        }
        
        .vn-nav-link:nth-child(3) {
            animation-delay: 1s;
        }
        
        .vn-nav-link:nth-child(4) {
            animation-delay: 1.5s;
        }
        
        .vn-nav-link:nth-child(5) {
            animation-delay: 2s;
        }
        
        .vn-nav-link:nth-child(6) {
            animation-delay: 2.5s;
        }
        
        .vn-nav-link:nth-child(7) {
            animation-delay: 3s;
        }
        
        .vn-nav-link:nth-child(8) {
            animation-delay: 3.5s;
        }
        
        .vn-nav-link:nth-child(9) {
            animation-delay: 4s;
        }
        
        .vn-nav-link:nth-child(10) {
            animation-delay: 4.5s;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .vn-main-content {
                margin-right: 0;
                margin-left: 0;
                margin-bottom: 100px;
            }
            
            .vn-vertical-nav {
                position: fixed;
                right: 0;
                bottom: 0;
                top: auto;
                left: 0;
                transform: none;
                flex-direction: row;
                justify-content: center;
                border-radius: 15px 15px 0 0;
                padding: 15px;
                box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.3);
                width: 100%;
            }
            
            .vn-nav-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px;
                justify-content: center;
            }
            
            .vn-nav-link {
                padding: 8px 12px;
                font-size: 12px;
            }
            
            .vn-nav-link:hover {
                transform: translateY(-3px);
            }
        }