.energy-diagram {
            background: #fef9e6;
            border-radius: 12px;
            padding: 1rem;
        }.authority-note{text-align:left}
        .series-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .series-lyman { background: #0d6efd; color: white; }
        .series-balmer { background: #198754; color: white; }
        .series-paschen { background: #fd7e14; color: white; }
        .series-brackett { background: #6f42c1; color: white; }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
            background: #ffffff;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .energy-canvas {
            width: 100%;
            height: auto;
            background-color: #fef9e6;
            border: 1px solid #ddd;
            border-radius: 8px;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin: 0.8rem 0;
            font-size: 0.85rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 2px;
            display: inline-block;
        }
        .legend-color.transition { background-color: #e67e22; }
        .legend-color.level { background-color: #2c3e50; }
        .limitations-card {
            background-color: #fff8e1;
            border-left: 4px solid #ffc107;
            padding: 1rem;
            border-radius: 4px;
            margin: 1rem 0;
        }
        .expert-credentials {
            border: 2px solid #0d6efd;
            border-radius: 8px;
            padding: 1rem;
            margin: 1.5rem 0;
        }
        .uncertainty-card {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 1rem;
            margin: 1rem 0;
        }
        .experimental-card {
            background-color: #e8f5e8;
            border: 1px solid #c3e6c3;
            border-radius: 8px;
            padding: 1rem;
            margin: 1rem 0;
        }
        .derivation {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #6f42c1;
        }
        .interactive-module {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 1.5rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .api-section {
            background-color: #f5f5f5;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 1rem;
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
        }