/* 移动端底部导航栏 - 仅在移动端显示 */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: auto;
            min-height: 44px;
            padding: 4px 10px;
            background-color: transparent;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
            z-index: 10003; /* 高于左下角装饰(loli z10002),否则装饰会盖住弹菜单 */
            justify-content: space-around;
            align-items: center;
            box-sizing: border-box;
            /* 遮罩层（增强对比度） */
            background: linear-gradient(135deg, rgba(0,0,0,0.1) 0%, rgba(20,20,30,0.1) 100%);
            /* 空白区域点击穿透，避免遮住后方内容；按钮/菜单已单独恢复可点 */
            pointer-events: none;
        }
        
        .mobile-bottom-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            flex: 1;
            text-decoration: none;
            color: #666;
            transition: all 0.3s ease;
            padding: 2px 2px;
            min-width: 50px;
            pointer-events: auto;
        }
        
        .mobile-bottom-nav-item:hover,
        .mobile-bottom-nav-item.active {
            color: var(--nav-color, #333);
        }
        
        .mobile-bottom-nav-icon {
            font-size: 22px;
            line-height: 1;
            margin-bottom: 2px;
        }
        
        .mobile-bottom-nav-text {
            font-size: 10px;
            line-height: 1.2;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }
        
        /* 移动端适配 - 768px以下 */
        @media (max-width: 768px) {
            .mobile-bottom-nav {
                display: flex;
            }
            
            /* 调整内容区域，避免被底部导航栏遮挡 */
            .content {
                padding-bottom: 44px !important;
            }
            
            .footer {
                margin-bottom: 44px !important;
            }
        }
        
        /* 深色模式支持 */
        @media (prefers-color-scheme: dark) {
            .mobile-bottom-nav {
                background-color: transparent;
            }
            
            .mobile-bottom-nav-item {
                color: rgba(255, 255, 255, 0.8);
            }
            
            .mobile-bottom-nav-item:hover,
            .mobile-bottom-nav-item.active {
                color: var(--nav-color, #fff);
            }
        }
        
        /* 底部导航栏下拉菜单 */
        .mobile-bottom-nav-dropdown {
            position: relative;
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            pointer-events: auto;
        }
        
        .mobile-bottom-nav-menu {
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 12px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
            min-width: 160px;
            max-width: 200px;
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transition: all 0.2s ease-out;
            z-index: 11000;
            margin-bottom: 8px;
            pointer-events: auto;
        }
        /* 第一个按钮(首页在最左)弹菜单居中会溢出屏幕,改为左对齐(含 active 态,否则被 .active 规则覆盖) */
        .mobile-bottom-nav-dropdown:first-child > .mobile-bottom-nav-menu {
            left: 0;
            transform: translateY(10px);
        }
        .mobile-bottom-nav-dropdown:first-child.active > .mobile-bottom-nav-menu {
            left: 0;
            transform: translateY(0);
        }
        
        .mobile-bottom-nav-dropdown.active .mobile-bottom-nav-menu {
            max-height: 280px;
            overflow-y: auto;
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }
        
        .mobile-bottom-nav-menu a,
        .mobile-bottom-nav-menu .category-item {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            color: #333;
            text-decoration: none;
            font-size: 14px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            white-space: nowrap;
        }
        
        .mobile-bottom-nav-menu a:last-child,
        .mobile-bottom-nav-menu .category-item:last-child {
            border-bottom: none;
        }
        
        .mobile-bottom-nav-menu a:hover,
        .mobile-bottom-nav-menu .category-item:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        
        .mobile-bottom-nav-menu a.active,
        .mobile-bottom-nav-menu .category-item.active {
            background: rgba(76, 175, 80, 0.15);
            color: #4CAF50;
        }
        
        .mobile-bottom-nav-menu i {
            margin-right: 10px;
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        
        .mobile-bottom-nav-menu-loading {
            padding: 16px;
            text-align: center;
            color: #999;
            font-size: 13px;
        }
        
        /* 深色模式下的下拉菜单 */
        @media (prefers-color-scheme: dark) {
            .mobile-bottom-nav-menu {
                background: rgba(40, 40, 40, 0.95);
            }
            
            .mobile-bottom-nav-menu a,
            .mobile-bottom-nav-menu .category-item {
                color: rgba(255, 255, 255, 0.9);
                border-bottom-color: rgba(255, 255, 255, 0.1);
            }
            
            .mobile-bottom-nav-menu a:hover,
            .mobile-bottom-nav-menu .category-item:hover {
                background: rgba(255, 255, 255, 0.1);
            }
            
            .mobile-bottom-nav-menu-loading {
                color: rgba(255, 255, 255, 0.5);
            }
        }