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var(--border);max-height:180px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:0}.history-header{padding:12px 14px 8px}.new-inv-btn{margin:8px 10px}.history-list{max-height:120px;padding:0 6px 6px}.input-panel{border-right:none;border-bottom:1px solid var(--border)}.output-panel{min-height:50vh}}.steps{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.step-thinking{font-size:13.5px;line-height:1.7;color:var(--text);padding:4px 0}.step-thinking p{margin-bottom:8px}.step-thinking strong{font-weight:600}.step-tool{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.step-tool-header{display:flex;align-items:center;gap:8px;padding:9px 12px;cursor:pointer;font-size:12.5px;transition:background 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