:root{--green:#1e7145;--green-dark:#185c37;--green-light:#e7f2ea;--ribbon-bg:#f3f3f3;--border:#d4d4d4;--grid-line:#e2e2e2;--hdr-bg:#f5f5f5;--hdr-sel:#dfe3e0;--text:#222;--muted:#777;--up:#d60000;--down:#0051c7;color:var(--text);font-family:Malgun Gothic,맑은 고딕,Segoe UI,Calibri,sans-serif;font-size:13px}*{box-sizing:border-box}html,body,#root{background:#fff;height:100%;margin:0;overflow:hidden}button{font:inherit;color:inherit}.workbook{flex-direction:column;height:100vh;display:flex}.titlebar{background:var(--green);color:#fff;flex:none;align-items:center;gap:12px;height:34px;padding:0 10px;font-size:12px;display:flex}.tb-left{align-items:center;gap:10px;display:flex}.app-icon{display:inline-flex}.autosave{opacity:.95}.toggle-off{border:1px solid #ffffffb3;border-radius:8px;margin-left:4px;padding:0 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