:root {
            --primary: #0762bd;
            --secondary: #032491;
            --accent: #e74c3c;
            --text: #34495e;
            --bg: #f9f9f9;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        h1 {
            text-align: center;
            margin-bottom: 30px;
            color: var(--primary);
            font-weight: 600;
            font-size: 2.5rem;
        }
        
        .org-chart {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
        }
        
        .tree {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .node {
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            padding: 5px;
            margin: 5px;
            width: 100px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
        }
        
        .node:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0,0,0,0.15);
        }
        
        .node.ceo {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
        }
        
        .node.manager {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
        }
        
        .node.staff {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: 2px solid var(--secondary);
        }
        
        .node-img {
            width: 80px;
            height: 80px;
            border-radius: 15%;
            object-fit: cover;
            margin: 0 auto 10px;
            border: 3px solid white;
            box-shadow: 0 2px 6px rgba(0,0,0,0.1);
        }
        
        .node-title {
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .node-name {
            font-size: 0.9rem;
        }
        
        .level {
            display: flex;
            justify-content: center;
            width: 50%;
            position: relative;
        }
        
        .horizontal-connector {
            height: 2px;
            width: 50px;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .vertical-connector {
            width: 2px;
            height: 30px;
            top: -30px;
            left: 50%;
        }
        
        @media (max-width: 768px) {
            .level {
                flex-direction: column;
                align-items: center;
            }
            
            .horizontal-connector {
                display: none;
            }
            
            .vertical-connector {
                height: 20px;
                top: -20px;
            }
        }