.input-group-custom {
            margin-bottom: 1rem;
        }
        .result-value-lg {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 2.2rem;
            background: rgba(70,130,180,0.08);
            padding: 0.1rem 0.8rem;
            border-radius: 6px;
        }
        .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: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: block;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            margin: 0.5rem 0;
            font-size: 0.9rem;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 50%;
        }
        .legend-color.blue { background-color: #0d6efd; }
        .legend-color.green { background-color: #28a745; }
        .legend-color.orange { background-color: #fd7e14; }
        .legend-color.red { background-color: #dc3545; }
        .result-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem 2rem;
            margin: 1rem 0;
        }
        .result-grid .result-item {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .result-grid .result-item .label {
            color: #6c757d;
            font-size: 0.9rem;
        }
        .result-grid .result-item .value {
            font-weight: 600;
            float: right;
        }
        .roll-badge {
            display: inline-block;
            background: var(--primary-color);
            color: #fff;
            font-weight: 700;
            padding: 0.25rem 1.2rem;
            border-radius: 30px;
            font-size: 1.6rem;
            margin: 0.2rem 0;
        }
        .result-summary {
            background: rgba(70,130,180,0.06);
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            margin: 1rem 0;
            border: 1px solid rgba(70,130,180,0.15);
        }
        @media (max-width: 576px) {
            .result-grid {
                grid-template-columns: 1fr;
                gap: 0.25rem;
            }
            .result-value-lg {
                font-size: 1.6rem;
            }
        }
        .wallpaper-tip {
            background: #f8f9fa;
            border-radius: 6px;
            padding: 0.8rem 1.2rem;
            margin: 0.5rem 0;
            border-left: 3px solid #28a745;
        }
        .wallpaper-tip i {
            color: #28a745;
            margin-right: 0.5rem;
        }
        .input-group-prepend-custom {
            font-size: 0.85rem;
            color: #6c757d;
        }
        .form-control-sm-custom {
            height: calc(1.5em + 0.75rem + 2px);
            padding: 0.25rem 0.5rem;
            font-size: 0.875rem;
        }