.property-table th,
        .property-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .result-value-large {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 3rem;
            line-height: 1.2;
        }
        .result-value-large span {
            font-size: 1.5rem;
            font-weight: 400;
            color: #6c757d;
        }
        .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-card {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1.5rem;
            margin: 1rem 0;
            border: 1px solid #e9ecef;
        }
        .result-card .label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #6c757d;
        }
        .result-card .value {
            font-size: 2.5rem;
            font-weight: 700;
            color: #1a2a3a;
        }
        .result-card .sub-value {
            font-size: 1rem;
            color: #6c757d;
        }
        .conversion-flow {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            padding: 1rem 0;
        }
        .conversion-flow .arrow {
            font-size: 2rem;
            color: var(--primary-color);
        }
        .conversion-flow .box {
            background: white;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            padding: 0.75rem 1.5rem;
            text-align: center;
            min-width: 100px;
        }
        .conversion-flow .box .number {
            font-size: 1.8rem;
            font-weight: 700;
        }
        .conversion-flow .box .unit {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .combo-display {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1a2a3a;
            padding: 0.75rem 1.25rem;
            background: #e9f0f5;
            border-radius: 8px;
            display: inline-block;
        }
        .precision-control {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin: 0.5rem 0;
        }
        .precision-control label {
            font-size: 0.9rem;
            color: #495057;
            font-weight: 500;
        }
        .precision-control select {
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            border: 1px solid #ced4da;
            font-size: 0.9rem;
        }
        .swap-btn {
            background: none;
            border: none;
            color: var(--primary-color);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .swap-btn:hover {
            background: rgba(70, 130, 180, 0.1);
        }
        .conversion-detail {
            background: white;
            border-radius: 8px;
            padding: 1.25rem;
            margin: 0.75rem 0;
            border: 1px solid #e9ecef;
        }
        .conversion-detail .step {
            padding: 0.3rem 0;
            font-family: 'Courier New', monospace;
            font-size: 1rem;
        }
        .conversion-detail .step .highlight {
            color: var(--primary-color);
            font-weight: 600;
        }
        .history-item {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f1f3f5;
            font-size: 0.95rem;
        }
        .history-item:last-child {
            border-bottom: none;
        }
        .badge-imperial {
            background-color: #6c757d;
            color: white;
            font-size: 0.75rem;
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
        }
        @media (max-width: 576px) {
            .result-value-large {
                font-size: 2rem;
            }
            .conversion-flow .box .number {
                font-size: 1.2rem;
            }
            .conversion-flow .arrow {
                font-size: 1.2rem;
            }
        }