.input-group-custom {
            margin-bottom: 1rem;
        }
        .result-value-large {
            font-weight: 700;
            color: #005a8c;
            font-size: 2.4rem;
        }
        .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;
        }
        .geometry-canvas {
            width: 100%;
            height: auto;
            background-color: #fafcfe;
            border: 1px solid #dde7f0;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: block;
        }
        .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%;
        }
        .legend-color.blue { background-color: #0077b6; }
        .legend-color.orange { background-color: #e67e22; }
        .legend-color.green { background-color: #27ae60; }
        .legend-color.gray { background-color: #6c757d; }
        .result-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .result-card {
            background: #f8fafc;
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
            border: 1px solid #e9edf2;
        }
        .result-card .label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #6c757d;
        }
        .result-card .value {
            font-size: 1.8rem;
            font-weight: 700;
            color: #005a8c;
        }
        .result-card .unit {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .highlight-box {
            background: #eaf4fb;
            border-radius: 8px;
            padding: 1.2rem;
            margin: 1rem 0;
            border: 1px solid #c5ddee;
        }
        .propeller-icon {
            font-size: 3rem;
            color: #0077b6;
        }
        .inline-formula {
            font-family: 'Courier New', monospace;
            background: #f1f4f7;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
        }
        .tool-header .badge {
            font-size: 0.8rem;
            background-color: #0077b6 !important;
        }