.validation-note {
            background-color: #eef2fa;
            border-left: 4px solid #0d6efd;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
            font-size: 0.95rem;
        }
        .geometry-canvas {
            width: 100%;
            background: #fefef7;
            border: 1px solid #ddd;
            border-radius: 12px;
            margin-top: 1rem;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 0.7rem;
            font-size: 0.85rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 2px;
            display: inline-block;
        }
        .legend-color.curve { background-color: #2c7a64; }
        .legend-color.point { background-color: #dc3545; border-radius: 50%; }
        .legend-color.zero { background-color: #6c757d; height: 2px; width: 24px; vertical-align: middle; }
        .unit-note {
            font-size: 0.85rem;
            color: #5e6f8d;
        }
        .badge.bg-secondary {
            background-color: #2c7a64 !important;
        }
        .tool-header h1 {
            font-size: 2rem;
        }
        .inversion-point {
            background: #f8f0e5;
            padding: 0.5rem;
            border-radius: 8px;
            margin-top: 0.5rem;
            font-weight: 500;
        }
        .expert-stamp {
            display: inline-block;
            background: #1f6e5c10;
            border-radius: 30px;
            padding: 0.2rem 0.8rem;
            font-size: 0.8rem;
            font-weight: 500;
            color: #1f6e5c;
            margin-right: 0.5rem;
        }
        .ref-link {
            text-decoration: none;
            color: #0a58ca;
        }