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button{background:var(--bg);background-image:var(--tex-surface);border:none;font-size:9px;font-weight:700;letter-spacing:.4px;color:var(--text-muted);padding:6px 4px;border-radius:var(--r-xs);cursor:pointer;box-shadow:var(--neu-well)}.chirality-toggle button.active,.cvd-buttons button.active,.lighting-buttons button.active,.material-buttons 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var(--accent)}.substitution-swatch{width:16px;height:16px;border-radius:3px;box-shadow:inset 0 0 0 1px #00000040}.substitution-brand{font-size:9px;color:var(--text-muted);font-weight:700}.substitution-id{font-family:monospace;font-size:9px}.substitution-delta{font-family:monospace;font-size:9px;color:var(--text-muted)}.theme-palettes{display:flex;flex-direction:column;gap:6px}.theme-palettes-header{font-size:10px;font-weight:700;letter-spacing:.5px;color:var(--text-muted)}.theme-palettes-list{display:flex;flex-direction:column;gap:4px}.theme-card{position:relative;background:var(--bg);background-image:var(--tex-surface);border-radius:var(--r-sm);padding:6px;box-shadow:var(--neu-well)}.theme-card-main{display:flex;flex-direction:column;gap:4px;background:transparent;border:none;width:100%;cursor:pointer;text-align:left;color:var(--text)}.theme-card-strip{display:flex;height:18px;border-radius:var(--r-xs);overflow:hidden;box-shadow:inset 0 0 0 1px 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