/* 侧边栏图标样式 */
        .info-icon {
            position: fixed;
            right: 5px;
            top: 30%;
            transform: translateY(-50%);
            background-color: #3498db;
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
            z-index: 1000;
            transition: all 0.3s ease;
            font-size: 24px;
            font-weight: bold;
        }
        
        .info-icon:hover {
            background-color: #2980b9;
            transform: translateY(-50%) scale(1.1);
        }
        
        /* 侧边栏面板样式 */
        .info-panel {
            position: fixed;
            left: -420px;
            top: 80px;
            width: 400px;
            height: 100vh;
            background-color: white;
            box-shadow: 2px 0 15px rgba(0,0,0,0.1);
            padding: 30px;
            overflow-y: auto;
            z-index: 999;
            transition: left 0.4s ease;
        }
        
        .info-panel.active {
            left: 0;
        }
        
        .info-panel h2 {
            color: #3498db;
            margin: 0 0 20px 0;
            padding-bottom: 15px;
            border-bottom: 2px solid #eee;
            font-size: 1.8rem;
        }
        
        .info-panel h3 {
            color: #2c3e50;
            margin: 20px 0 10px 0;
            font-size: 1.3rem;
        }
        
        .info-panel p {
            margin-bottom: 15px;
            font-size: 1rem;
            color: #555;
        }
        
        .close-btn {
            position: absolute;
            right: 20px;
            top: 20px;
            font-size: 28px;
            cursor: pointer;
            color: #95a5a6;
            transition: color 0.2s;
        }
        
        .close-btn:hover {
            color: #e74c3c;
        }
        
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 998;
            display: none;
            transition: opacity 0.3s;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .info-panel {
                width: 320px;
                left: -320px;
            }
            
            .container {
                padding: 20px 15px;
            }
        }