:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --hvac-color: #6f42c1;
            --enthalpy-color: #e83e8c;
        } .percentage-table{overflow:auto}
   .page-header {
            background: linear-gradient(135deg, rgba(169, 214, 229, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 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;
            margin: 10px 0;
            text-align: center;
        }
        .math-equation {
            font-size: 1.3rem;
            padding: 15px;
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 4px solid var(--hvac-color);
            border-radius: 4px;
            margin: 15px 0;
        }
        .hvac-box {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--hvac-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        @media (max-width: 768px) {
            }
        .function-examples {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .example-btn {
            background-color: rgba(44, 125, 160, 0.1);
            border: 1px solid rgba(44, 125, 160, 0.2);
            border-radius: 4px;
            padding: 0.5rem 0.75rem;
            font-size: 0.9rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
        }
        .example-btn:hover {
            background-color: rgba(44, 125, 160, 0.2);
            transform: translateY(-2px);
        }
        .calculation-step {
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px dashed var(--border-color);
        }
        .graph-legend {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1rem;
            margin-bottom: 0.5rem;
        }
        .legend-item {
            display: flex;
            align-items: center;
        }
        .legend-color {
            width: 20px;
            height: 4px;
            margin-right: 0.5rem;
        }
        .rh-color {
            background-color: rgba(44, 125, 160, 0.8);
        }
        .point-marker {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: #dc3545;
            margin-right: 0.5rem;
        }
        .precision-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin: 1rem 0 0.5rem 0;
            flex-wrap: wrap;
            gap: 10px;
        }
        .precision-selector {
            width: 120px;
            display: inline-block;
        }
        .graph-note {
            font-size: 0.95rem;
            color: var(--text-muted);
            background-color: rgba(44,125,160,0.05);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            text-align: center;
            margin: 0.5rem 0 1rem;
        }
        .unit-toggle {
            cursor: pointer;
            color: var(--primary-color);
            font-weight: 500;
        }
        .unit-toggle:hover {
            text-decoration: underline;
        }
        .output-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .alert-info {
            background-color: #d1ecf1;
            border-color: #bee5eb;
            color: #0c5460;
            padding: 0.75rem 1.25rem;
            border-radius: 4px;
            margin-bottom: 1rem;
        }
        .faq-section .accordion-item {
            border: 1px solid var(--border-color);
            margin-bottom: 0.5rem;
            border-radius: 4px;
        }
        .faq-section .accordion-button:not(.collapsed) {
            background-color: rgba(44, 125, 160, 0.1);
            color: var(--primary-color);
        }