:root{--bg: #f6f7f9;--surface: #ffffff;--surface-hover: #f1f3f6;--border: #e3e6eb;--text: #17191c;--text-muted: #626a75;--accent: #2f5bd3;--accent-hover: #2549b0;--accent-soft: #e8eefc;--danger: #c53030;--danger-soft: #fdecec;--success: #1f8a4c;--folder: #d99a1e;--cad: #2f5bd3;--pdf: #c53030;--image: #7b4fd0;--canvas: #ffffff;--shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 4px 12px rgb(16 24 40 / 6%);--shadow-lg: 0 12px 40px rgb(16 24 40 / 18%);--radius: 10px;--topbar-h: 56px;color-scheme:light;font-family:Inter,system-ui,-apple-system,Segoe 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