body { 
            margin: 0; 
            background: #0a0e14; 
            font-family: Arial, sans-serif;
            color: white;
            overflow: hidden;
        }
        #stars-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }
        #container { 
            width: 100vw; 
            height: 100vh;
            position: relative;
            z-index: 1;
        }
        .node rect { 
            fill: #1e293b; 
            stroke: #333; 
            stroke-width: 1.5px; 
            cursor: pointer;
        }
        .node:hover rect { 
            fill: #2d3748; 
            stroke: #60a5fa; 
            stroke-width: 2px;
        }
        .node text { 
            fill: #f9fafb; 
            font-size: 10px; 
            text-anchor: middle; 
            pointer-events: none;
            font-weight: 500;
        }
        .link { 
            stroke: #334155; 
            stroke-width: 1.5px; 
            fill: none;
            opacity: 0.4;
        }
        .relationship-node rect { 
            fill: #0f1419; 
            stroke: #475569; 
        }
        .relationship-node text { 
            fill: #94a3b8; 
            font-size: 7px; 
            font-style: italic;
            font-weight: 400;
        }
        #header {
            position: fixed;
            top: 20px;
            left: 20px;
            z-index: 1000;
        }
        .search-result-item {
            padding: 8px 12px;
            cursor: pointer;
            border-bottom: 1px solid #1e293b;
            font-size: 11px;
            color: #f9fafb;
        }
        .search-result-item:hover {
            background: #1e293b;
        }
        .search-result-item:last-child {
            border-bottom: none;
        }