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var(--line);border-radius:var(--r-pill);padding:2px;gap:2px}.theme-toggle-btn{background:transparent;border:none;padding:4px 12px;border-radius:var(--r-pill);font-size:var(--fs-xs);color:var(--fg-muted);cursor:pointer}.theme-toggle-btn.is-active{background:var(--accent);color:var(--accent-fg)}