.rate-card {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1rem;
            margin: 1rem 0;
            border: 1px solid #e2e8f0;
        }
        .param-row {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 0.75rem;
        }
        .param-label {
            width: 140px;
            font-weight: 500;
        }
        .custom-range-input {
            flex: 1;
            min-width: 120px;
        }
        .cost-breakdown {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
        }
        .geometry-canvas {
            width: 100%;
            height: auto;
            background: #fef9e8;
            border-radius: 16px;
            border: 1px solid #dee2e6;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.8rem;
            margin: 0.6rem 0;
            font-size: 0.85rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            display: inline-block;
            border-radius: 2px;
        }
        .legend-color.curve { background-color: #2c7da0; }
        .legend-color.dot { background-color: #e63946; border-radius: 10px; }
        .water-tip {
            background: #e3f2fd;
            border-left: 4px solid #0284c7;
            padding: 0.8rem;
            border-radius: 8px;
        }
        .unit-note {
            color: #2c3e50;
        }