/* body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            margin: 0;
            padding: 20px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        } */
        
        .container {
          /*  max-width: 1200px;
            width: 100%;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            padding: 30px; */
        }
        
 /*       .header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        h1 {
            color: #0f6ab4;
            margin-bottom: 10px;
            font-weight: 600;
        }
        
        .description {
            color: #666;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .features {
            display: flex;
            justify-content: space-around;
            margin: 30px 0;
            flex-wrap: wrap;
        }
        
        .feature {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 20px;
            width: 200px;
            text-align: center;
            margin: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .feature:hover {
            transform: translateY(-5px);
            background: #e9f0f7;
        }
        
        .feature h3 {
            color: #0f6ab4;
            margin-top: 0;
        } */
        
        /* 核心修改部分 - 导航菜单样式 */
        #nav {
         /*   background: #0f6ab4;
            border-radius: 8px; 
            padding: 0 20px;
            
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);*/
			height: 60px;
			margin: 0 auto;
        }
        
        ul#navbar {
            list-style-type: none;
            margin: 0;
            padding: 0;
            position: relative;
            display: flex;
        }
        
        ul#navbar li {
            position: relative;
        }
        
        ul#navbar > li {
           /* flex: 1; */
            text-align: center;
			    border-right: 1px solid #eaebeb;
			    height: 60px;
        }
        
        ul#navbar li a {
            display: block;
            color: black;
            font-size: 1.1em;
            padding: 17px 25px;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
            font-weight: 500;
        }
        
        ul#navbar li a:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        
        /* 通用子菜单样式 */
        ul#navbar ul {
            display: none;
            position: absolute;
            min-width: 220px;
            background: #f6f6f6;
            border-radius: 0 0 6px 6px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
            padding: 0;
            margin: 0;
            z-index: 1000;
            top: 100%;
            left: 0;
        }
        
        /* 多级子菜单定位 */
        ul#navbar ul ul {
            top: 0;
            left: 100%;
            border-radius: 6px;
        }
        
        /* 悬停时显示子菜单 - 通用规则 */
        ul#navbar li:hover > ul {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        
        /* 子菜单项样式 */
        ul#navbar ul li {
            border-bottom: 1px solid #eaeaea;
            position: relative;
        }
        
        ul#navbar ul li:last-child {
            border-bottom: none;
        }
        
        ul#navbar ul li a {
            color: #333;
            padding: 12px 20px;
            text-align: left;
            font-size: 1em;
            white-space: nowrap;
        }
        
        ul#navbar ul li a:hover {
            background: #0f6ab4;
            color: white;
            padding-left: 25px;
        }
        
        /* 箭头指示器 */
        #arrow {
            font-size: 0.6em;
            margin-left: 8px;
            transition: transform 0.3s;
        }
        
        ul#navbar li:hover > a > #arrow {
            transform: rotate(180deg);
        }
        
        /* 指示当前菜单层级 */
        .menu-path {
            margin-top: 20px;
            padding: 15px;
            background: #e9f0f7;
            border-radius: 8px;
            font-size: 0.9em;
            color: #0f6ab4;
        }
        
        /* 动画效果 */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .footer {
            text-align: center;
            margin-top: 40px;
            color: #666;
            font-size: 0.9em;
        }
        
        @media (max-width: 768px) {
            .features {
                flex-direction: column;
                align-items: center;
            }
            
            #nav {
                padding: 0 10px;
            }
            
            ul#navbar li a {
                padding: 12px 15px;
                font-size: 0.95em;
            }
        }