:root{--border:#c3cad4;--panel:#e4e9f0;--hover:#d6dde7;--ribbon:#f2f5f8;--text:#1f2328;--muted:#5f6670;--accent:#1f5fbf;--error-bg:#fdecea;--error-text:#8a1c12;--notice-bg:#fff6db;--notice-text:#6b4e00;--warning-bg:#fff0e6;--warning-text:#c92a2a;color:var(--text);font-family:system-ui,Segoe UI,sans-serif;font-size:14px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:#fff}.app{flex-direction:column;height:100%;display:flex}.toolbar{border-bottom:1px solid var(--border);background:var(--panel)}.toolbar-row,.ribbon{flex-wrap:wrap;align-items:center;gap:8px;padding:6px 10px;display:flex}.toolbar-row{border-bottom:1px solid var(--border);padding-bottom:0}.toolbar-row>:not(.ribbon-tab-list){margin-bottom:6px}.ribbon{background:var(--ribbon)}.ribbon[data-state=inactive]{display:none}.ribbon-tab-list{align-self:flex-end;display:flex}.ribbon-tab{color:var(--muted);background:0 0;border:1px solid #0000;border-bottom:none;border-radius:4px 4px 0 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