.math-result {
            padding: 15px;
            background-color: white;
            border-radius: 4px;
            border: 1px solid #eee;
            font-family: 'Courier New', monospace;
            font-size: 1.3rem;
            margin: 10px 0;
            text-align: center;
            word-break: break-word;
        }
        .balance-summary {
            background-color: #eef5ff;
            border-left: 5px solid #0d6efd;
            padding: 1rem;
            border-radius: 0.5rem;
            margin: 1rem 0;
        }
        .atom-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .atom-table th, .atom-table td {
            border: 1px solid #dee2e6;
            padding: 0.5rem;
            text-align: center;
        }
        .atom-table th {
            background-color: #f1f3f5;
        }
        .example-btn {
            background-color: rgba(13, 110, 253, 0.1);
            border: 1px solid rgba(13, 110, 253, 0.2);
            border-radius: 20px;
            padding: 0.4rem 0.9rem;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s;
            font-family: monospace;
        }
        .example-btn:hover {
            background-color: rgba(13, 110, 253, 0.2);
            transform: translateY(-1px);
        }
        .function-examples {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin: 1rem 0;
        }
        .chem-input {
            font-family: 'Courier New', monospace;
            font-size: 1.1rem;
        }
        .badge-solution {
            background-color: #198754;
            color: white;
        }
        .property-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .property-table th, .property-table td {
            padding: 0.75rem;
            border: 1px solid #dee2e6;
        }
        .case-study {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 1.2rem;
            border-left: 5px solid #0d6efd;
        }
        .warning-note {
            background-color: #fff3cd;
            border: 1px solid #ffeeba;
            color: #856404;
            padding: 0.7rem 1rem;
            border-radius: 6px;
            margin: 1rem 0;
        }
        .author-bio {
            background-color: #f8f9fa;
            border-left: 4px solid #0d6efd;
            padding: 1.2rem;
            margin: 2rem 0;
            border-radius: 0 12px 12px 0;
        }
        .privacy-note {
            background-color: #e7f3ff;
            border: 1px solid #b8daff;
            color: #004085;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            margin: 1rem 0;
        }
        .result-value {
            font-weight: 700;
            color: #0d6efd;
            font-size: 1.4rem;
        }
        .balanced-equation {
            font-size: 1.4rem;
            font-weight: 500;
            background: #f0f4f8;
            padding: 12px;
            border-radius: 12px;
            font-family: 'Courier New', monospace;
        }
        .test-case {
            background-color: #fef9e6;
            border-left: 5px solid #ffc107;
            padding: 1rem;
            margin: 1rem 0;
            font-size: 0.95rem;
        }
        .test-case pre {
            background: #fff;
            padding: 0.5rem;
            border-radius: 6px;
            margin: 0.5rem 0;
            font-family: monospace;
        }@media (max-width: 768px) { .m-auto{display:none}}
        .contact-link {
            color: #0d6efd;
            text-decoration: none;
        }
        .contact-link:hover {
            text-decoration: underline;
        }