/* 手机端导航菜单样式 */
@media (max-width:960px ) {
    /* 移动端背景样式优化 */
    body {
        background-attachment: scroll !important; /* 移动端使用滚动背景，避免性能问题 */
    }
    .phone_nav{ 
        float: right; 
        margin-top: 10px;
    }
    .phone_nav ul{ 
        list-style: none; 
        margin: 0; 
        padding: 0;
    }
    .phone_nav ul li{ 
        display: inline-block; 
        margin-left: 15px; 
        position: relative;
    }
    .phone_nav ul li a{ 
        color: #333; 
        text-decoration: none; 
        font-size: 14px; 
        padding: 5px 0; 
        display: block;
    }
    .phone_nav ul li a:hover{ 
        color: #dd0000;
    }
    .phone_nav ul li a.current{ 
        color: #dd0000 !important;
        font-weight: bold;
    }
    .phone_nav ul li a.normal{ 
        color: #333;
    }
    .phone_submenu{ 
        display: none; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        background: #fff; 
        border: 1px solid #eee; 
        min-width: 120px; 
        z-index: 1000; 
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    .phone_nav ul li:hover .phone_submenu{ 
        display: block;
    }
    .phone_submenu li{ 
        display: block; 
        margin: 0;
    }
    .phone_submenu li a{ 
        padding: 8px 15px; 
        border-bottom: 1px solid #f5f5f5;
    }
    .phone_submenu li:last-child a{ 
        border-bottom: none;
    }
}