.geometry-canvas {
            background: #fefefe;
            border-radius: 12px;
            width: 100%;
            height: auto;
            max-width: 280px;
            margin: 0 auto;
            display: block;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 0.8rem;
            font-size: 0.8rem;
        }
        .legend-color {
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 50%;
            margin-right: 5px;
            vertical-align: middle;
        }
        .warning-note, .design-card {
            background: #f2f6fc;
            padding: 1.2rem;
            border-radius: 20px;
            margin: 1rem 0;
        }
        .unit-tip {
            font-size: 0.8rem;
            color: #5f6c80;
        }
        .badge-ipc {
            background-color: #1a5f7a;
            font-size: 0.8rem;
        }
        footer {
            background: #f8f9fa;
            padding: 2rem 0;
            margin-top: 3rem;
        }