:root { 
            --accent-color: #b45309;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --math-color: #7b5e3b;
        }
       .page-header {
            background: linear-gradient(135deg, rgba(252, 211, 77, 0.4) 0%, rgba(217, 119, 6, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(217, 119, 6, 0.2);
            position: relative;
            overflow: hidden;color: var(--text-color);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-item a { color: var(--text-muted); text-decoration: none; }
        .breadcrumb-item.active { color: var(--text-color); }
        .math-result {
            padding: 12px;
            background-color: white;
            border-radius: 4px;
            border: 1px solid #eee;
            font-size: 1.1rem;
            font-family: 'Courier New', monospace;
            margin: 10px 0;
        }
        .math-box {
            background-color: rgba(123, 94, 59, 0.05);
            border-left: 3px solid var(--math-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .function-examples {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .example-btn {
            background-color: rgba(217, 119, 6, 0.1);
            border: 1px solid rgba(217, 119, 6, 0.2);
            border-radius: 4px;
            padding: 0.5rem 0.75rem;
            font-size: 0.9rem;
            color: var(--primary-color);
            cursor: pointer;
            font-family: 'Courier New', monospace;
        }
        .example-btn:hover {
            background-color: rgba(217, 119, 6, 0.2);
        }
        .graph-legend {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 0.5rem;
        }
        .legend-item {
            display: flex;
            align-items: center;
        }
        .legend-color {
            width: 20px;
            height: 4px;
            margin-right: 0.5rem;
        }
        .res-color { background-color: rgba(217, 119, 6, 0.8); }
        .spec-table td {
            padding: 0.3rem 0.8rem;
        }
        .material-property-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1rem 0;
        }
        .material-property-table th, .material-property-table td {
            border: 1px solid var(--border-color);
            padding: 0.5rem;
            text-align: center;
        }
        .material-property-table th {
            background-color: var(--light-gray);
        }