:root{--bg: #f6f7f9;--bg-elevated: #ffffff;--bg-subtle: #f0f2f5;--border: #e3e6ea;--border-strong: #cdd2d9;--text: #1a1d21;--text-muted: #6b7280;--text-faint: #9aa1ab;--brand: #2563eb;--brand-hover: #1d4ed8;--brand-soft: #e8efff;--success: #16a34a;--success-soft: #e7f7ec;--warning: #d97706;--warning-soft: #fdf3e3;--danger: #dc2626;--danger-soft: #fdecec;--info: #0891b2;--info-soft: #e2f5f9;--shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 12px rgba(16, 24, 40, .06);--radius: 10px;--radius-sm: 6px;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}@media (prefers-color-scheme: dark){:root{--bg: #0d1117;--bg-elevated: #161b22;--bg-subtle: #1c2129;--border: #262d38;--border-strong: #3a434f;--text: #e6edf3;--text-muted: #8b949e;--text-faint: #6e7681;--brand: #4d8dfa;--brand-hover: #669dff;--brand-soft: #16273f;--success: #3fb950;--success-soft: 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