: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;
            --industrial-color: #8a6d3b;
            --calc-color: #e83e8c;
        }
       .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);color:#333
        }.breadcrumb-item a,.breadcrumb-item.active{color:#333}
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
        }
        .math-box {
            background-color: rgba(44, 125, 160, 0.05);
            border-left: 3px solid var(--primary-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .formula-highlight {
            font-size: 1.2rem;
            font-family: 'Courier New', monospace;
            background: #f0f0f0;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
        }
        .summary-unit {
            font-size: 1rem;
            color: var(--text-muted);
        }
        .canvas-container {
            background: white;
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
            border: 1px solid var(--border-color);
            margin: 1.5rem 0;
        }
        #rollCanvas {
            max-width: 100%;
            height: auto;
            background-color: #fafafa;
            border-radius: 8px;
        }
        .unit-group .input-group {
            margin-bottom: 0.5rem;
        }
        .example-btn {
            background-color: rgba(44, 125, 160, 0.1);
            border: 1px solid rgba(44, 125, 160, 0.2);
            border-radius: 4px;
            padding: 0.4rem 0.8rem;
            font-size: 0.85rem;
            color: var(--primary-color);
            cursor: pointer;
            display: inline-block;
            margin: 0.25rem;
            transition: 0.2s;
        }
        .example-btn:hover {
            background-color: rgba(44, 125, 160, 0.2);
        }
        .conversion-note {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }