:root{--bg: #ffffff;--bg-sidebar: #fbfbfa;--bg-hover: #f1f1ef;--bg-active: #e7f0fa;--bg-elevated: #ffffff;--bg-toolbar: #fafaf9;--bg-input: #ffffff;--text: #37352f;--text-muted: #787774;--text-faint: #9b9a97;--text-inverse: #ffffff;--border: #ebebea;--border-strong: #d9d9d7;--brand: #2383e2;--brand-soft: #e7f0fa;--brand-text: #1d6fb8;--accent: #27d2bf;--success: #4caf50;--danger: #eb5757;--warning: #f5a623;--gradient-brand: linear-gradient(135deg, #4b3fe3 0%, #27d2bf 100%);--gradient-text: linear-gradient(135deg, #37352f 0%, #4b3fe3 100%);--shadow-sm: 0 1px 2px rgba(15, 15, 15, .04), 0 1px 3px rgba(15, 15, 15, .03);--shadow-md: 0 2px 8px rgba(15, 15, 15, .06), 0 1px 2px rgba(15, 15, 15, .04);--shadow-lg: 0 8px 24px rgba(15, 15, 15, .08), 0 2px 8px rgba(15, 15, 15, .05);--radius-sm: 3px;--radius: 5px;--radius-md: 8px;--radius-lg: 12px;--font-sans: "SF Pro Text", "PingFang SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", Menlo, 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