:root{--color-brand-primary: #0f3460;--color-brand-secondary: #16213e;--color-brand-accent: #0284c7;--color-brand-accent-hover: #0369a1;--color-brand-accent-light: #e0f2fe;--color-success: #10b981;--color-success-bg: #ecfdf5;--color-success-border: #a7f3d0;--color-warning: #f59e0b;--color-warning-bg: #fffbeb;--color-warning-border: #fde68a;--color-danger: #ef4444;--color-danger-bg: #fef2f2;--color-danger-border: #fecaca;--color-info: #3b82f6;--color-info-bg: #eff6ff;--color-info-border: #bfdbfe;--color-diff-add-bg: #dcfce7;--color-diff-add-border: #86efac;--color-diff-add-text: #166534;--color-diff-del-bg: #fee2e2;--color-diff-del-border: #fca5a5;--color-diff-del-text: #991b1b;--color-diff-mod-bg: #fef3c7;--color-diff-mod-border: #fcd34d;--color-diff-mod-text: #92400e;--bg-app: #f4f6f9;--bg-surface: #ffffff;--bg-surface-elevated: #ffffff;--bg-sidebar: #0f172a;--bg-sidebar-hover: #1e293b;--bg-sidebar-active: #2563eb;--bg-header: #ffffff;--bg-input: #f8fafc;--bg-input-focus: 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var(--transition-fast)}.doc-tab-btn:hover{background:#e2e8f0}.doc-tab-btn.active{background:var(--color-brand-primary);color:#fff;border-color:var(--color-brand-primary)}.doc-viewer-tools{display:flex;align-items:center;gap:6px}.tool-icon-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-xs);color:var(--text-secondary);background:#f8fafc;border:1px solid var(--border-subtle);transition:all var(--transition-fast)}.tool-icon-btn:hover{background:#e2e8f0;color:var(--text-primary)}.doc-render-body{flex:1;overflow:auto;padding:24px;display:flex;justify-content:center;align-items:flex-start;position:relative;background:#cbd5e1}.simulated-paper-doc{background:#fff;width:100%;max-width:680px;min-height:880px;padding:36px 40px;box-shadow:0 8px 30px #00000026;border-radius:2px;font-family:"Times New Roman",serif,var(--font-sans);color:#1a1a1a;position:relative;transition:transform .2s ease}.paper-header{text-align:center;border-bottom:2px solid #000;padding-bottom:12px;margin-bottom:20px}.paper-company-title{font-size:20px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.paper-doc-type-title{font-size:16px;font-weight:700;margin-top:6px;letter-spacing:.1em;text-decoration:underline}.paper-meta-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;font-size:13px;margin-bottom:20px;border-bottom:1px solid #e2e8f0;padding-bottom:14px}.paper-meta-row{display:flex;gap:8px}.paper-meta-row strong{min-width:90px;color:#333}.paper-table{width:100%;border-collapse:collapse;margin-bottom:20px;font-size:12px}.paper-table th,.paper-table td{border:1px solid #475569;padding:6px 8px;text-align:left}.paper-table th{background:#f1f5f9;font-weight:700}.paper-totals-box{margin-top:20px;padding:10px 16px;background:#f8fafc;border:1px dashed 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var(--transition-fast)}.subtab-btn.active{background:#fff;color:var(--color-brand-primary);box-shadow:var(--shadow-sm)}.audit-pane-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:16px}.audit-interactive-item{border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:14px;background:#fff;transition:all var(--transition-fast);cursor:pointer;position:relative}.audit-interactive-item:hover{border-color:var(--color-brand-accent);box-shadow:var(--shadow-sm)}.audit-interactive-item.focused{border-color:var(--color-brand-accent);background:#f0f9ff;box-shadow:0 0 0 3px var(--color-brand-accent-light)}.item-badge-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.item-index-badge{font-size:11px;font-weight:700;color:var(--color-brand-accent);background:var(--color-brand-accent-light);padding:2px 8px;border-radius:var(--radius-xs)}.check-item-btn{display:flex;align-items:center;gap:4px;font-size:11px;font-weight:600;padding:2px 8px;border-radius:var(--radius-xs);background:#f1f5f9;color:var(--text-tertiary);border:1px solid var(--border-subtle)}.check-item-btn.checked{background:#ecfdf5;color:#047857;border-color:#a7f3d0}.diff-container{display:flex;flex-direction:column;gap:12px}.diff-card{border-radius:var(--radius-md);border:1px solid var(--border-subtle);overflow:hidden;background:#fff}.diff-card-header{background:#f8fafc;padding:8px 14px;font-weight:600;font-size:12px;border-bottom:1px solid var(--border-subtle);display:flex;justify-content:space-between}.diff-table{width:100%;border-collapse:collapse;font-size:12px}.diff-table th,.diff-table td{padding:8px 12px;border-bottom:1px solid var(--border-subtle)}.diff-table th{background:#f1f5f9;color:var(--text-tertiary);font-weight:600}.diff-val-before{background:var(--color-diff-del-bg);color:var(--color-diff-del-text);text-decoration:line-through;padding:2px 6px;border-radius:3px;font-family:var(--font-mono)}.diff-val-after{background:var(--color-diff-add-bg);color:var(--color-diff-add-text);font-weight:600;padding:2px 6px;border-radius:3px;font-family:var(--font-mono)}.workbench-footer{height:56px;background:#fff;border-top:1px solid var(--border-subtle);padding:0 24px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;z-index:10}.checklist-progress{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;color:var(--text-secondary)}.progress-bar-wrap{width:140px;height:6px;background:#e2e8f0;border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:var(--color-success);transition:width .3s ease}