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i,.kb-legend-item.kb-finger--rr i,.kb-legend-item.kb-finger--rp i{background:var(--finger)}html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--lp,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--lr,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--lm,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--li,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--th,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--ri,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--rm,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--rr,html[data-theme=dark] .kb-wrap--fingers .kb-key.kb-finger--rp{background:color-mix(in srgb, var(--finger) 28%, var(--bg-elevated));color:var(--text)}.game-page{gap:18px;padding-top:8px;display:grid}.game-stage{border:1px solid var(--border);height:380px;box-shadow:var(--shadow-sm);background:linear-gradient(#e9f5ff 0%,#d6ecff 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0;font-size:13px;font-weight:600}.hero-actions--tracks{flex-wrap:wrap;margin-top:8px}.lesson-track-badge{letter-spacing:.02em;vertical-align:middle;border-radius:999px;align-items:center;padding:2px 8px;font-size:11px;font-weight:800;display:inline-flex}.lesson-track-badge--zh{color:var(--blue);background:var(--blue-soft);border:1px solid color-mix(in srgb, var(--blue) 30%, transparent)}.lesson-track-badge--en{color:#0d7a4f;background:color-mix(in srgb, #12a36a 14%, var(--bg-elevated));border:1px solid #12a36a4d}.track-mini{background:var(--bg-muted,var(--bg-elevated));border:1px solid var(--border);box-sizing:border-box;border-radius:999px;gap:4px;max-width:100%;padding:3px;display:inline-flex}.track-mini-btn{min-width:36px;height:28px;color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:999px;flex-shrink:0;padding:0 10px;font-size:12px;font-weight:800}.track-mini-btn--on{background:var(--blue);color:#fff;box-shadow:0 2px 8px color-mix(in srgb, var(--blue) 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