.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;
        }
        .result-display-box {
            background: #f8f9fc;
            border-radius: 8px;
            padding: 1.5rem;
            margin-top: 1rem;
            border: 1px solid #e9ecef;
        }
        .chinese-characters {
            font-size: 2.2rem;
            font-weight: 600;
            color: #1a2a3a;
            letter-spacing: 0.05em;
            line-height: 1.6;
            font-family: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
        }
        .chinese-characters .currency-symbol {
            color: var(--primary-color);
        }
        .chinese-characters .decimal-part {
            color: #6c757d;
        }
        .decomposition-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.5rem 1.5rem;
            margin: 1rem 0;
        }
        .decomposition-item {
            display: flex;
            justify-content: space-between;
            padding: 0.3rem 0;
            border-bottom: 1px dashed #eee;
        }
        .decomposition-item .label {
            color: #6c757d;
        }
        .decomposition-item .value {
            font-weight: 500;
            font-family: 'Courier New', monospace;
        }
        .chinese-number-chart {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            gap: 0.5rem;
            margin: 1.5rem 0;
        }
        .chinese-number-chart .chart-item {
            background: #f8f9fa;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            text-align: center;
            border: 1px solid #e9ecef;
        }
        .chinese-number-chart .chart-item .digit {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a2a3a;
            font-family: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
        }
        .chinese-number-chart .chart-item .value {
            font-size: 0.85rem;
            color: #6c757d;
        }
        .chinese-unit-chart {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 0.5rem;
            margin: 1.5rem 0;
        }
        .chinese-unit-chart .chart-item {
            background: #f8f9fa;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            text-align: center;
            border: 1px solid #e9ecef;
        }
        .chinese-unit-chart .chart-item .unit {
            font-size: 1.3rem;
            font-weight: 600;
            color: #1a2a3a;
            font-family: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
        }
        .chinese-unit-chart .chart-item .desc {
            font-size: 0.85rem;
            color: #6c757d;
        }
        .example-output {
            font-size: 1.5rem;
            font-weight: 500;
            color: #1a2a3a;
            font-family: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
        }
        .conversion-steps {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            margin: 1rem 0;
        }
        .conversion-steps .step {
            padding: 0.5rem 0;
            border-bottom: 1px solid #e9ecef;
        }
        .conversion-steps .step:last-child {
            border-bottom: none;
        }
        .conversion-steps .step .conversion-steps .step .step-content {
            display: inline;
        }
        .conversion-steps .step .step-content .highlight {
            font-weight: 600;
            color: var(--primary-color);
        }
        .input-number {
            font-size: 1.5rem;
            font-weight: 500;
            color: #1a2a3a;
        }
        .result-card {
            background: linear-gradient(135deg, #f8f9fc 0%, #eef1f5 100%);
            border-radius: 12px;
            padding: 1.5rem 2rem;
            margin: 1rem 0;
            border: 1px solid #e9ecef;
        }
        .result-card .label {
            font-size: 0.9rem;
            color: #6c757d;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .result-card .value {
            font-size: 1.8rem;
            font-weight: 600;
            color: #1a2a3a;
            font-family: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
        }
        .result-card .value .currency {
            color: var(--primary-color);
        }
        .error-table {
            margin: 1.5rem 0;
        }
        .error-table th {
            background-color: var(--light-gray);
        }
        @media (max-width: 768px) {
            .chinese-characters {
                font-size: 1.6rem;
            }
            .decomposition-grid {
                grid-template-columns: 1fr;
            }
            .result-card .value {
                font-size: 1.4rem;
            }
        }