.last-digit-lab .power-board{gap:1rem;width:100%;max-width:44rem;margin-inline:auto;display:grid}.last-digit-lab .power-board p{font-size:var(--text-support);text-align:center;margin:0;line-height:1.8}.last-digit-lab .power-digit-group{gap:.4rem;margin:0;padding:0;list-style:none;display:grid}.last-digit-lab .power-digit-group li{border:2px solid var(--line);border-radius:var(--radius-small);background:var(--surface);font-size:var(--text-support);justify-items:center;gap:.3rem;min-width:0;margin:0;padding:.5rem .15rem;display:grid;position:relative}.last-digit-lab .power-digit-group li[data-current]{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:2px}.last-digit-lab .power-digit-group li:not(:last-child):after{content:"→";z-index:1;color:var(--ink);background:var(--surface);font-weight:700;position:absolute;top:45%;right:-.5rem}.last-digit-lab .power-digit-group strong{border:2px solid var(--accent);width:2.2rem;height:2.2rem;color:var(--accent);border-radius:50%;place-items:center;font-size:1.3rem;display:grid}.last-digit-lab .power-original-value{color:var(--muted)}.last-digit-lab .power-position{font-size:var(--text-hint)}.last-digit-lab .power-cycle{font-size:1.25rem;font-weight:700}.last-digit-lab .power-multiplication{border:1px solid var(--line);border-radius:var(--radius-small);background:var(--surface-soft);padding:.75rem}.last-digit-lab .power-transition-row{text-align:center;grid-template-columns:1fr minmax(3rem,.7fr) 1fr;align-items:center;gap:.4rem;display:grid}.last-digit-lab .power-transition-row>div{min-width:0}.last-digit-lab .power-transition-row p{font-size:1.55rem;font-weight:600}.last-digit-lab .power-transition-row strong{color:var(--accent);text-underline-offset:.2em;text-decoration:underline}.last-digit-lab .power-direction svg{width:100%;height:1.8rem;display:block;overflow:visible}.last-digit-lab .power-direction path{fill:none;stroke:var(--accent);stroke-width:3px}.last-digit-lab .power-group-bridge{color:var(--accent);font-weight:700}.last-digit-lab .power-check-table{border-collapse:collapse;width:100%;font-size:var(--text-support)}.last-digit-lab .power-check-table th,.last-digit-lab .power-check-table td{border:1px solid var(--line);text-align:center;padding:.5rem .25rem}.last-digit-lab .power-base-options{flex-wrap:wrap;justify-content:center;gap:.5rem;display:flex}.last-digit-lab .power-base-options button{min-width:5rem;min-height:48px}@media (width<=400px){.last-digit-lab .power-digit-group li{font-size:.875rem}.last-digit-lab .power-transition-row p{font-size:1.35rem}}