/* slope_field.css — the grid of slope segments + the glowing solution curve. */
.lv-field { stroke: rgba(148, 163, 184, 0.5); stroke-width: 1.4; }
.lv-soln { stroke: #fbbf24; stroke-width: 2.6; stroke-linecap: round; filter: drop-shadow(0 0 3px rgba(251, 191, 36, 0.45)); }