nenrei-sim,.nr-figure{--nr-father:#1e78c2;--nr-child:#d9690b;--nr-diff:#2b9348;--nr-diff-ink:#257d3d;display:block}@media (prefers-color-scheme:dark){nenrei-sim,.nr-figure{--nr-father:#7cc0f5;--nr-child:#ffab61;--nr-diff:#6fd98f;--nr-diff-ink:#6fd98f}}.nr rt{font-size:.5em}.nr-tabs{border-radius:var(--radius);background:var(--c-border);grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;display:grid}.nr-tabs [role=tab]{border-radius:calc(var(--radius) - 4px);min-height:44px;color:var(--c-text);cursor:pointer;background:0 0;border:0;font-weight:700}.nr-tabs [role=tab][aria-selected=true]{background:var(--c-surface);color:var(--c-primary);box-shadow:0 1px 2px #00000026}.nr-panel{border:1px solid var(--c-border);border-radius:var(--radius);background:var(--c-surface);margin-top:.75rem;padding:1rem}.nr-panel>:first-child{margin-top:0}.nr-kind{background:var(--c-surface-2);border-radius:999px;margin:0 0 .25rem;padding:0 .6rem;font-size:.8125rem;font-weight:700;line-height:2;display:inline-block}.nr-problem{margin:0 0 .25rem;font-size:1.0625rem;font-weight:700;line-height:2}.nr-mission{color:var(--c-muted);margin:0 0 .75rem;line-height:2}.nr-chart{border-radius:var(--radius);background:var(--c-surface-2);margin:.75rem 0;padding:.5rem}.nr-chart figcaption{color:var(--c-muted);text-align:center;margin-top:.25rem;font-size:.8125rem;line-height:2}.age-chart{width:100%;max-width:520px;height:auto;margin-inline:auto;display:block}.age-chart .lbl{fill:var(--c-text);font-size:14px;font-weight:700}.age-chart .lbl--note{fill:var(--c-primary);font-size:15px}.age-chart .lbl--diff{fill:var(--nr-diff-ink)}.age-chart .row-name{font-size:15px}.age-chart .tape{stroke:var(--c-text);stroke-width:1px}.age-chart .tape--father{fill:var(--nr-father)}.age-chart .tape--child{fill:var(--nr-child)}.age-chart .tape--diff{fill:var(--nr-diff)}@media (prefers-color-scheme:dark){.age-chart .tape{stroke:var(--c-surface);stroke-width:1.5px}}.age-chart .ghost{fill:none;stroke:var(--c-text);stroke-width:1.5px;stroke-dasharray:4 3}.age-chart .sep{stroke:var(--c-text);stroke-width:2.5px}.age-chart .guide{stroke:var(--c-muted);stroke-width:1px;stroke-dasharray:3 3}.age-chart .bracket{fill:none;stroke:var(--c-muted);stroke-width:1.5px}.age-chart .bracket-g--total .bracket{stroke:var(--c-text)}.age-chart .lbl--total{fill:var(--c-primary)}@media (prefers-reduced-motion:no-preference){.age-chart--divided .sep{animation:.5s ease-out nr-sep}}@keyframes nr-sep{0%{opacity:0}to{opacity:1}}.nr-controls{grid-template-columns:1fr 1.3fr;gap:.5rem;display:grid}.nr-controls .btn,.nr-play{padding-inline:.5rem;font-size:.9375rem}.nr-play{width:100%;margin-top:.5rem}nenrei-sim.is-playing .nr-play{pointer-events:none;opacity:.6}.nr-legend{margin:.75rem 0 0;padding:0;font-size:.9375rem;line-height:2;list-style:none}.nr-legend .nr-diff{font-weight:700}.nr-legend .nr-note{color:var(--c-muted);display:block}.nr-legend .nr-insight{border-radius:var(--radius);background:var(--c-primary-soft);margin-top:.5rem;padding:.5rem .75rem;font-weight:700;display:block}.nr-actions{flex-wrap:wrap;gap:.5rem;margin-top:1rem;display:flex}.nr-actions .btn{flex:auto}.nr-seg{grid-auto-columns:1fr;grid-auto-flow:column;gap:4px;margin-bottom:1rem;display:grid}.nr-seg__btn{border:2px solid var(--c-border);border-radius:var(--radius);background:var(--c-surface);min-height:44px;color:var(--c-text);cursor:pointer;padding:.25rem .5rem;font-weight:700}.nr-seg__btn[aria-pressed=true]{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}.nr-answer{flex-wrap:wrap;align-items:end;gap:.75rem;margin-top:.75rem;display:flex}.nr-answer__field{align-items:center;gap:.4rem;font-weight:700;display:flex}.nr-answer__field input{border:2px solid var(--c-border);background:var(--c-bg);width:5em;min-height:44px;color:var(--c-text);text-align:right;border-radius:8px;padding:0 .5rem;font-size:1.25rem}.nr-answer__field input:focus{border-color:var(--c-primary)}.nr-result-area:not(:empty){border-radius:var(--radius);background:var(--c-surface-2);margin-top:1rem;padding:.75rem 1rem}.nr-result-area p{margin:0;line-height:2}.nr-result{font-size:1.25rem;font-weight:800}.nr-result.is-correct{color:var(--c-success)}.nr-result.is-wrong{color:var(--c-danger)}.nr-score{color:var(--c-muted);margin:.75rem 0 0;font-size:.875rem}.nr-steps{counter-reset:nr-step;margin:1rem 0 0;padding:0;list-style:none}.nr-step{counter-increment:nr-step;border-radius:var(--radius);background:var(--c-surface-2);opacity:.75;margin-top:.5rem;padding:.5rem .75rem .5rem 2.75rem;position:relative}.nr-step.is-current{opacity:1;outline:2px solid var(--c-primary)}.nr-step:before{content:counter(nr-step);background:var(--c-primary);width:1.5rem;height:1.5rem;color:var(--c-on-primary);border-radius:50%;place-items:center;font-size:.875rem;font-weight:800;display:grid;position:absolute;top:.6rem;left:.75rem}.nr-step p{margin:0;line-height:2}.nr-step__title{font-weight:800}.nr-step__formula{font-variant-numeric:tabular-nums;color:var(--c-primary);font-size:1.125rem;font-weight:700}.nr-stepnav{grid-template-columns:1fr auto 1fr;align-items:center;gap:.75rem;margin-top:1rem;display:grid}.nr-stepnav__count{font-variant-numeric:tabular-nums;font-weight:700}.nr-noscript{color:var(--c-danger);margin-top:.75rem}