.property-table th,
        .property-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid #dee2e6;
        }
        .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-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            margin-top: 1.5rem;
            border: 1px solid #e9ecef;
        }
        .result-card .label {
            font-weight: 500;
            color: #495057;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .result-card .value {
            font-size: 2rem;
            font-weight: 600;
            color: #0066cc;
            font-family: 'Courier New', monospace;
        }
        .result-card .unit {
            font-size: 1.0rem;
            color: #6c757d;
            margin-left: 0.3rem;
        }
        .molar-mass-hint {
            font-size: 0.9rem;
            color: #6c757d;
            margin-top: 0.25rem;
        }
        .quick-db-btn {
            background: #eef2f7;
            border: none;
            border-radius: 20px;
            padding: 0.2rem 0.8rem;
            font-size: 0.8rem;
            margin: 0.15rem;
            cursor: pointer;
            transition: 0.15s;
        }
        .quick-db-btn:hover {
            background: #d4deec;
        }
        .flow-diagram {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            background: #f8fafc;
            padding: 1.2rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .flow-item {
            font-weight: 500;
            color: #1a2a3a;
        }
        .flow-arrow {
            font-size: 1.6rem;
            color: #0066cc;
            font-weight: 300;
        }
        .flow-formula {
            background: white;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            border: 1px solid #d4deec;
            font-family: 'Courier New', monospace;
            font-weight: 600;
            color: #004b99;
        }
        .badge-chem {
            background: #0066cc10;
            color: #0066cc;
            border: 1px solid #0066cc20;
            border-radius: 20px;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .table-of-values td {
            font-family: 'Courier New', monospace;
        }
        .table-of-values .substance {
            font-family: inherit;
            font-weight: 500;
        }
        .toggle-db-btn {
            background: none;
            border: none;
            color: #0066cc;
            text-decoration: underline dotted;
            cursor: pointer;
            font-size: 0.9rem;
            padding: 0;
        }
        .toggle-db-btn:hover {
            text-decoration: underline solid;
        }
        .molar-mass-db {
            background: #fafcff;
            border: 1px solid #e2eaf5;
            border-radius: 8px;
            padding: 0.8rem;
            max-height: 200px;
            overflow-y: auto;
            margin-top: 0.5rem;
        }
        .molar-mass-db table {
            width: 100%;
            font-size: 0.9rem;
        }
        .molar-mass-db td {
            padding: 0.25rem 0.5rem;
            border-bottom: 1px solid #f0f4fa;
        }
        .molar-mass-db tr:last-child td {
            border-bottom: none;
        }
        .molar-mass-db .substance {
            font-weight: 500;
        }
        .molar-mass-db .mass {
            font-family: 'Courier New', monospace;
            color: #004b99;
        }