.math-result {
            padding: 20px 25px;
            background-color: white;
            border-radius: 8px;
            border: 1px solid #e9ecef;
            font-size: 1.8rem;
            font-family: 'Times New Roman', serif;
            margin: 10px 0;
            text-align: center;
            line-height: 1.6;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
        }.selector-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    margin-top: 0.5rem;
}.selector-group label {
    font-weight: 500;
    margin-right: 0.5rem;
}.selector-group select {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid #ced4da;
    background: white;
}
        .math-result .small-note {
            font-size: 1rem;
            color: #6c757d;
            font-family: system-ui, -apple-system, sans-serif;
        }
        .math-equation {
            font-size: 1.2rem;
            padding: 15px 20px;
            background-color: rgba(70, 130, 180, 0.05);
            border-left: 4px solid var(--primary-color);
            border-radius: 4px;
            margin: 15px 0;
        }
        .subsection-title {
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
            font-size: 1.2rem;
        }
        .math-box {
            background-color: rgba(70, 130, 180, 0.05);
            border-left: 3px solid var(--primary-color);
            padding: 1.2rem 1.5rem;
            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(70, 130, 180, 0.08);
            border: 1px solid rgba(70, 130, 180, 0.2);
            border-radius: 20px;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
            font-family: 'Courier New', monospace;
        }
        .example-btn:hover {
            background-color: rgba(70, 130, 180, 0.2);
            transform: translateY(-2px);
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }
        .math-notation {
            font-family: 'Times New Roman', serif;
            font-size: 1.1rem;
        }
        .property-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .property-table th, .property-table td {
            padding: 0.75rem 1rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .property-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        .property-table tr:nth-child(even) {
            background-color: rgba(70, 130, 180, 0.04);
        }
        .authority-note {
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
            margin-top: 1rem;
            text-align: right;
        }
        .case-study {
            background-color: #f0f7fa;
            border-radius: 8px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            border-left: 5px solid var(--primary-color);
        }
        .key-point {
            font-weight: 500;
            color: var(--accent-color);
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .result-row {
            font-size: 1.1rem;
            margin: 0.6rem 0;
        }
        .result-value {
            font-weight: 600;
            color: var(--primary-color);
            font-size: 2.2rem;
        }
        .author-bio {
            background-color: #f8f9fa;
            border-left: 4px solid var(--primary-color);
            padding: 1.2rem 1.8rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .privacy-note {
            font-size: 0.9rem;
            background-color: #e7f3ff;
            border: 1px solid #b8daff;
            color: #004085;
            padding: 0.6rem 1.2rem;
            border-radius: 4px;
            margin: 1rem 0;
        }
        .warning-note {
            background-color: #fff3cd;
            border: 1px solid #ffeeba;
            color: #856404;
            padding: 0.6rem 1.2rem;
            border-radius: 4px;
            margin: 1rem 0;
            display: none;
        }
        .deep-dive {
            margin: 1.8rem 0;
        }
        .deep-dive p {
            text-align: justify;
        }
        .unit-note {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .coord-input {
            margin-bottom: 0.5rem;
        }
        .result-container {
            margin-top: 1.5rem;
        }
        .result-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
            color: var(--accent-color);
        }
        .pronunciation-block {
            background-color: #f8f9fa;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            margin: 1rem 0;
            border: 1px solid #e9ecef;
        }
        .pronunciation-block .ipa {
            font-family: 'Times New Roman', serif;
            font-size: 1.3rem;
            color: #495057;
        }
        .pronunciation-block .approx {
            font-style: italic;
            color: #6c757d;
        }
        .grammar-tip {
            background-color: #e8f5e9;
            border-left: 4px solid #2e7d32;
            padding: 0.8rem 1.2rem;
            margin: 0.8rem 0;
            border-radius: 0 4px 4px 0;
        }
        .grammar-tip.warning-tip {
            background-color: #fff8e1;
            border-left-color: #f57f17;
        }
        .structure-breakdown {
            font-family: 'Courier New', monospace;
            background-color: #f1f3f5;
            padding: 0.6rem 1rem;
            border-radius: 4px;
            display: inline-block;
            margin: 0.3rem 0;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(70, 130, 180, 0.08);
            color: var(--primary-color);
        }
        .display-5.lead {
            font-size: 2.2rem;
        }
        .badge.bg-secondary {
            font-size: 0.7rem;
            vertical-align: middle;
        }
        .related-tools-container .related-tool {
            border-bottom: 1px solid #eee;
            padding: 0.8rem 0;
        }
      
        @media (max-width: 768px) {
            .result-value {
                font-size: 1.6rem;
            }
            .math-result {
                font-size: 1.4rem;
                padding: 15px;
            }
            .display-5.lead {
                font-size: 1.6rem;
            }
        }