:root{color-scheme:light;--bg: #f4f6f8;--panel: #ffffff;--panel-soft: #f9fafb;--ink: #111827;--muted: #6b7280;--muted-strong: #374151;--line: #e5e7eb;--line-strong: #cbd5e1;--nav: #ffffff;--nav-muted: #4b5563;--brand: #0f766e;--brand-strong: #0b5f59;--brand-soft: #e6f4f1;--warning: #b45309;--warning-soft: #fff7ed;--danger: #b42318;--danger-soft: #fef3f2;--success: #067647;--success-soft: #ecfdf3;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", 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