.property-table th,
        .property-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .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;
        }
        .piano-canvas {
            width: 100%;
            height: auto;
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: block;
            touch-action: none;
            cursor: pointer;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 0.5rem 0;
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            border: 1px solid #ccc;
        }
        .legend-color.red {
            background-color: #dc3545;
        }
        .legend-color.blue {
            background-color: #0d6efd;
        }
        .legend-color.gray {
            background-color: #6c757d;
        }
        .legend-color.green {
            background-color: #28a745;
        }
        .note-selector-group {
            display: flex;
            gap: 0.75rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .note-selector-group select {
            min-width: 80px;
        }
        .freq-display {
            font-size: 0.95rem;
            color: #495057;
            background: #f1f3f5;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            display: inline-block;
        }
        .result-badge {
            font-size: 1.4rem;
            font-weight: 600;
            padding: 0.5rem 1.2rem;
            border-radius: 40px;
            background: #e9ecef;
            display: inline-block;
        }
        .interval-name {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-color);
        }
        .piano-legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 0.5rem;
            font-size: 0.85rem;
            flex-wrap: wrap;
        }
        .piano-legend .dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 4px;
            border: 1px solid #aaa;
        }
        .piano-legend .dot.dot-red {
            background: #dc3545;
        }
        .piano-legend .dot.dot-blue {
            background: #0d6efd;
        }
        .piano-legend .dot.dot-green {
            background: #28a745;
        }
        .note-label {
            font-family: 'Courier New', monospace;
            font-weight: 600;
        }
        .piano-range-info {
            font-size: 0.85rem;
            color: #6c757d;
            margin-top: 4px;
        }
        .history-item {
            font-size: 0.9rem;
            padding: 0.3rem 0.6rem;
            background: #f8f9fa;
            border-radius: 4px;
            margin-bottom: 4px;
            border-left: 3px solid var(--primary-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .history-item .badge {
            font-size: 0.7rem;
        }
        .history-list {
            max-height: 150px;
            overflow-y: auto;
        }
        @media (max-width: 576px) {
            .note-selector-group {
                flex-direction: column;
                align-items: stretch;
            }
            .note-selector-group select {
                width: 100%;
            }
        }