:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) {
    --ch20-ink: #172f3d;
    --ch20-muted: #607583;
    --ch20-line: #718b99;
    --ch20-grid: #d8e5e9;
    --ch20-surface: #f3f8fa;
    --ch20-surface-strong: #e5f1f4;
    --ch20-primary: #0b7189;
    --ch20-secondary: #d06f32;
    --ch20-tertiary: #7f5aa8;
    --ch20-force: #b43e55;
    --ch20-field: #167783;
    --ch20-current: #d06f32;
    margin: clamp(1.1rem, 2.6vw, 1.8rem) 0;
    padding: clamp(1rem, 2.6vw, 1.45rem);
    border: 1px solid color-mix(in srgb, var(--ch20-primary) 18%, transparent);
    border-radius: 1.25rem;
    background: linear-gradient(145deg, #fcfefe 0%, var(--ch20-surface) 100%);
    color: var(--ch20-ink);
    box-shadow: 0 0.8rem 2rem rgb(23 47 61 / 0.07);
    overflow: clip;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-heading {
    display: grid;
    gap: 0.2rem;
    margin-bottom: 0.9rem;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-heading h3 {
    margin: 0;
    font-size: var(--unit-text-heading-medium, 17px);
    line-height: 1.18;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-kicker {
    margin: 0;
    color: var(--ch20-primary);
    font-size: var(--unit-text-micro, 11px);
    font-weight: 800;
    letter-spacing: 0.075em;
    text-transform: uppercase;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-controls {
    display: grid;
    grid-template-columns: repeat(var(--ch20-control-count, 4), minmax(0, 1fr));
    gap: 0.45rem;
    margin-bottom: 0.85rem;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-control {
    min-width: 0;
    height: 41px;
    padding: 0.46rem 0.4rem;
    border: 1px solid color-mix(in srgb, var(--ch20-line) 62%, transparent);
    border-radius: 0.72rem;
    background: rgb(255 255 255 / 0.9);
    color: var(--ch20-ink);
    font: inherit;
    font-size: var(--unit-text-meta, 12px);
    font-weight: 750;
    line-height: 1;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-control:is(:hover, :focus-visible) {
    border-color: var(--ch20-primary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-control[aria-pressed="true"] {
    border-color: var(--ch20-primary);
    background: var(--ch20-primary);
    color: #fff;
    box-shadow: 0 0.35rem 0.9rem rgb(11 113 137 / 0.2);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-visual-stage, .ch20-visual-panel) {
    min-width: 0;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-panel[hidden] {
    display: none !important;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-drawing {
    position: relative;
    width: 100%;
    aspect-ratio: var(--ch20-drawing-ratio, 720 / 380);
    border-radius: 0.95rem;
    background: rgb(255 255 255 / 0.86);
    container-type: inline-size;
    overflow: clip;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-drawing > svg {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    max-height: none;
    border-radius: inherit;
    overflow: visible;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label {
    position: absolute;
    z-index: 4;
    max-width: 48%;
    color: var(--ch20-ink);
    font-size: clamp(0.64rem, 2.18cqw, 0.98rem);
    font-weight: 650;
    line-height: 1;
    white-space: nowrap;
    pointer-events: none;
    transform: translate(-50%, -50%);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label[data-math-anchor="start"] {
    transform: translate(0, -50%);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label[data-math-anchor="end"] {
    transform: translate(-100%, -50%);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label.is-equation {
    font-size: clamp(0.61rem, 2cqw, 0.94rem);
    font-weight: 680;
    text-shadow: 0 0 5px #fff, 0 0 5px #fff;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label.is-rule-copy {
    color: var(--ch20-ink);
    font-size: clamp(0.59rem, 1.72cqw, 0.82rem);
    font-weight: 700;
    text-shadow: 0 0 5px #fff, 0 0 5px #fff;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label:is(.is-small, .is-vector, .is-charge) {
    font-size: clamp(0.59rem, 1.8cqw, 0.84rem);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-math-label.is-force {
    color: var(--ch20-force);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-visual-caption {
    min-height: 2.8em;
    margin: 0.72rem 0 0;
    color: var(--ch20-muted);
    font-size: var(--unit-text-body-small, 13px);
    line-height: 1.45;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) svg :is(
    .ch20-axis,
    .ch20-guide,
    .ch20-vector,
    .ch20-field-line,
    .ch20-conductor,
    .ch20-orbit-path,
    .ch20-loop,
    .ch20-coil,
    .ch20-plot-line,
    .ch20-plate,
    .ch20-meter-lead,
    .ch20-compass-needle,
    .ch20-symbol-line
) {
    vector-effect: non-scaling-stroke;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-axis {
    fill: none;
    stroke: var(--ch20-line);
    stroke-width: 1.35;
    stroke-linecap: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-guide {
    fill: none;
    stroke: var(--ch20-line);
    stroke-width: 1.05;
    stroke-dasharray: 7 7;
    stroke-linecap: round;
    opacity: 0.76;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-vector {
    fill: none;
    stroke-width: 2.35;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-vector.is-field {
    stroke: var(--ch20-field);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-vector.is-secondary, .ch20-orbit-path) {
    stroke: var(--ch20-secondary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-vector.is-current {
    stroke: var(--ch20-current);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-vector.is-force {
    stroke: var(--ch20-force);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-field-line {
    fill: none;
    stroke: var(--ch20-field);
    stroke-width: 2.05;
    stroke-linecap: round;
    opacity: 0.86;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-conductor, .ch20-loop, .ch20-coil, .ch20-plate, .ch20-meter-lead, .ch20-compass-needle) {
    fill: none;
    stroke: var(--ch20-ink);
    stroke-width: 2.35;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-orbit-path {
    fill: none;
    stroke-width: 2.45;
    stroke-linecap: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-orbit-path.is-comparison {
    stroke: var(--ch20-tertiary);
    stroke-width: 2.05;
    stroke-dasharray: 9 7;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-plot-line {
    fill: none;
    stroke: var(--ch20-primary);
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-arrowhead {
    fill: none;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-arrowhead.is-field {
    stroke: var(--ch20-field);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-arrowhead.is-primary, .ch20-arrowhead.is-secondary) {
    stroke: var(--ch20-secondary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-arrowhead.is-current {
    stroke: var(--ch20-current);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-arrowhead.is-force {
    stroke: var(--ch20-force);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-svg-label, .ch20-object-label) {
    fill: var(--ch20-ink);
    font-size: 14px;
    font-weight: 650;
    paint-order: stroke fill;
    stroke: rgb(255 255 255 / 0.96);
    stroke-width: 5px;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-object-label.is-light {
    fill: #fff;
    stroke: transparent;
    font-size: 19px;
    font-weight: 850;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-point, .ch20-origin-point) {
    fill: var(--ch20-primary);
    stroke: #fff;
    stroke-width: 1.8;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-point.is-secondary {
    fill: var(--ch20-tertiary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-field-symbol {
    fill: rgb(255 255 255 / 0.78);
    stroke: var(--ch20-field);
    stroke-width: 1.25;
    opacity: 0.54;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-symbol-line, .ch20-field-symbol.ch20-symbol-dot) {
    stroke: var(--ch20-field);
    fill: var(--ch20-field);
    stroke-width: 1.3;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-force-symbol {
    fill: rgb(255 255 255 / 0.92);
    stroke: var(--ch20-force);
    stroke-width: 1.7;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-force-symbol.ch20-symbol-dot {
    fill: var(--ch20-force);
    stroke: var(--ch20-force);
}

:is(
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"]
) .ch20-force-symbol.ch20-symbol-line {
    fill: none;
    stroke: var(--ch20-force);
    stroke-width: 2.15;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-magnet {
    stroke: #fff;
    stroke-width: 1.5;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-magnet.is-north {
    fill: #bc495d;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-magnet.is-south {
    fill: #396f9c;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-particle, .ch20-compass, .ch20-meter) {
    fill: #fff;
    stroke: var(--ch20-ink);
    stroke-width: 2;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-particle.is-positive {
    fill: var(--ch20-primary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-particle.is-negative {
    fill: var(--ch20-tertiary);
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-solenoid-body, .ch20-hall-slab) {
    fill: rgb(229 241 244 / 0.84);
    stroke: color-mix(in srgb, var(--ch20-primary) 32%, transparent);
    stroke-width: 1.25;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-current-source {
    fill: #fff;
    stroke: var(--ch20-current);
    stroke-width: 2;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-current-source.ch20-symbol-dot {
    fill: var(--ch20-current);
    stroke: none;
}

:is(
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"]
) .ch20-hand-photo {
    pointer-events: none;
}

:is(
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"]
) .ch20-hand-rule-vector {
    filter: drop-shadow(0 0 2px rgb(255 255 255 / 0.94));
}

:is(
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"]
) .ch20-svg-label.is-hand-rule-label {
    font-weight: 760;
    paint-order: stroke fill;
    stroke: rgb(255 255 255 / 0.98);
    stroke-width: 4px;
    stroke-linejoin: round;
}

:is(
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"]
) .ch20-math-label.is-rule-symbol {
    font-weight: 760;
    text-shadow: 0 0 5px #fff, 0 0 5px #fff, 0 0 7px #fff;
}

[data-unit-visual-extension="current_field_patterns"] .ch20-right-hand-photo,
[data-unit-visual-extension="conductor_force_geometry"] .ch20-left-palm-photo {
    filter: drop-shadow(0 4px 7px rgb(23 47 61 / 0.12));
}

[data-unit-visual-extension="current_field_patterns"] .ch20-hand-axis {
    stroke: color-mix(in srgb, var(--ch20-ink) 74%, transparent);
    stroke-width: 2.35;
}

:is(
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"]
) .ch20-hand-depth-symbol {
    opacity: 1;
    stroke-width: 2.1;
}

[data-unit-visual-extension="current_field_patterns"] .ch20-current-source.ch20-hand-depth-symbol.ch20-symbol-line {
    fill: none;
    stroke: var(--ch20-current);
    stroke-width: 2.1;
}

[data-unit-visual-extension="current_field_patterns"] .ch20-hand-rule-orbit {
    opacity: 0.82;
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-timeline {
    display: grid;
    gap: 0.58rem;
    min-width: 0;
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-controls {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 3rem;
    align-items: center;
    gap: 0.55rem;
    min-width: 0;
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-play {
    min-width: 5rem;
    min-height: 2.2rem;
    padding: 0.4rem 0.62rem;
    border: 1px solid var(--ch20-primary);
    border-radius: 0.68rem;
    background: var(--ch20-primary);
    color: #fff;
    font: inherit;
    font-size: var(--unit-text-meta, 12px);
    font-weight: 760;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-play:is(:hover, :focus-visible) {
    background: color-mix(in srgb, var(--ch20-primary) 84%, #000);
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-range {
    width: 100%;
    min-width: 0;
    accent-color: var(--ch20-primary);
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-motion-output {
    color: var(--ch20-primary);
    font-size: var(--unit-text-meta, 12px);
    font-weight: 760;
    text-align: right;
    white-space: nowrap;
}

:is(
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) :is(.ch20-motion-object, .ch20-motion-field) {
    will-change: transform, opacity;
}

[data-unit-visual-extension="magnetic_circular_motion"] .ch20-motion-trace {
    will-change: stroke-dashoffset;
}

[data-unit-visual-extension="selector_hall_probe"] :is(
    .is-hall-positive,
    .is-hall-negative,
    .is-hall-electric-label,
    .is-hall-voltage,
    .ch20-hall-electric-force
) {
    will-change: opacity, top;
}

[data-unit-visual-extension="induction_flux_change"] .ch20-swept-area {
    fill: color-mix(in srgb, var(--ch20-secondary) 16%, transparent);
    stroke: color-mix(in srgb, var(--ch20-secondary) 58%, transparent);
    stroke-width: 1.05;
    stroke-dasharray: 7 7;
    vector-effect: non-scaling-stroke;
}

[data-unit-visual-extension="faraday_lenz_evidence"] .ch20-induction-current-loop {
    stroke-width: 2.8;
}

:is(
    [data-unit-visual-extension="magnetic_field_sources"],
    [data-unit-visual-extension="current_field_patterns"],
    [data-unit-visual-extension="conductor_force_geometry"],
    [data-unit-visual-extension="moving_charge_force"],
    [data-unit-visual-extension="magnetic_circular_motion"],
    [data-unit-visual-extension="selector_hall_probe"],
    [data-unit-visual-extension="parallel_current_forces"],
    [data-unit-visual-extension="flux_linkage_geometry"],
    [data-unit-visual-extension="induction_flux_change"],
    [data-unit-visual-extension="faraday_lenz_evidence"]
) .ch20-core {
    fill: #95aab4;
    stroke: var(--ch20-ink);
    stroke-width: 1.4;
}

@media (max-width: 560px) {
    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) {
        padding: 0.82rem;
        border-radius: 1rem;
    }

    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) .ch20-visual-controls {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) .ch20-visual-control {
        font-size: 0.72rem;
    }

    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) .ch20-visual-caption {
        min-height: 0;
        font-size: 0.78rem;
    }

    :is(
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) .ch20-motion-controls {
        grid-template-columns: auto minmax(0, 1fr) 2.7rem;
        gap: 0.42rem;
    }

    :is(
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) .ch20-motion-play {
        min-width: 4.7rem;
        min-height: 2.1rem;
        padding-inline: 0.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) *,
    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) *::before,
    :is(
        [data-unit-visual-extension="magnetic_field_sources"],
        [data-unit-visual-extension="current_field_patterns"],
        [data-unit-visual-extension="conductor_force_geometry"],
        [data-unit-visual-extension="moving_charge_force"],
        [data-unit-visual-extension="magnetic_circular_motion"],
        [data-unit-visual-extension="selector_hall_probe"],
        [data-unit-visual-extension="parallel_current_forces"],
        [data-unit-visual-extension="flux_linkage_geometry"],
        [data-unit-visual-extension="induction_flux_change"],
        [data-unit-visual-extension="faraday_lenz_evidence"]
    ) *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}