.math-box {
            background: rgba(42,111,151,0.05);
            border-left: 4px solid var(--primary-color);
            padding: 1.2rem 1.6rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
        .math-equation {
            font-size: 1.25rem;
            padding: 1rem 1.5rem;
            background: rgba(42,111,151,0.04);
            border-left: 4px solid var(--primary-color);
            border-radius: 4px;
            margin: 1rem 0;
            font-family: 'Cambria Math', 'Latin Modern Math', STIXGeneral, serif;
        }
        .formula-highlight {
            background: #f4f7fa;
            padding: 0.8rem 1.4rem;
            border-radius: 8px;
            font-family: 'Courier New', monospace;
            font-size: 1.05rem;
            border: 1px solid #e9ecef;
            margin: 0.6rem 0;
        }
        .result-row {
            font-size: 1.15rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f2f4;
        }
        .result-row:last-child {
            border-bottom: none;
        }
        .result-value {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .example-btn {
            background: rgba(42,111,151,0.08);
            border: 1px solid rgba(42,111,151,0.15);
            border-radius: 20px;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 500;
        }
        .example-btn:hover {
            background: rgba(42,111,151,0.18);
            transform: translateY(-2px);
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        }
        .function-examples {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 0.8rem 0 1.2rem 0;
        }
        .physics-canvas {
            width: 100%;
            height: auto;
            background: #fcfcfd;
            border: 1px solid #e4e7ed;
            border-radius: 12px;
            display: block;
            margin-top: 0.8rem;
            box-shadow: inset 0 1px 4px rgba(0,0,0,0.02);
        }
        .canvas-container {
            margin-top: 1.2rem;
            background: #fcfcfd;
            border-radius: 12px;
            padding: 0.4rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.6rem;
            margin: 0.8rem 0 0.2rem 0;
            font-size: 0.85rem;
            flex-wrap: wrap;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .legend-color.red { background: #dc3545; }
        .legend-color.blue { background: #0d6efd; }
        .legend-color.green { background: #28a745; }
        .legend-color.orange { background: #fd7e14; }
        .legend-color.purple { background: #9b59b6; }
        .legend-line {
            display: inline-block;
            width: 22px;
            height: 2px;
            background: #444;
            flex-shrink: 0;
        }
        .legend-line.dashed {
            background: transparent;
            border-top: 2px dashed #888;
        }
        .property-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.95rem;
        }
        .property-table th,
        .property-table td {
            padding: 0.6rem 0.8rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .property-table th {
            background: var(--light-gray);
            font-weight: 600;
        }
        .property-table tr:nth-child(even) {
            background: rgba(42,111,151,0.03);
        }
        .property-table tr:hover {
            background: rgba(42,111,151,0.06);
        }
        .case-study {
            background: #f0f7fa;
            border-radius: 12px;
            padding: 1.4rem 1.8rem;
            margin: 1.6rem 0;
            border-left: 5px solid var(--primary-color);
        }
        .author-bio {
            background: #f4f7fb;
            border-left: 4px solid var(--primary-color);
            padding: 1.2rem 1.6rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .privacy-note {
            font-size: 0.9rem;
            background: #e7f3ff;
            border: 1px solid #b8daff;
            color: #004085;
            padding: 0.6rem 1.2rem;
            border-radius: 8px;
            margin: 1rem 0;
        }
        .warning-note {
            background: #fff3cd;
            border: 1px solid #ffeeba;
            color: #856404;
            padding: 0.6rem 1.2rem;
            border-radius: 8px;
            margin: 0.8rem 0;
            display: none;
        }
        .badge-physics {
            background: #20c997;
            color: #fff;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .authority-note {
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
            margin-top: 1.6rem;
            text-align: right;
        }
        .key-point {
            font-weight: 600;
            color: var(--accent-color);
        }
        .unit-note {
            color: #6c757d;
            font-size: 0.9rem;
        }