:root{--bg: #f6f8fa;--bg-surface: #ffffff;--bg-nav: rgba(246, 248, 250, .92);--text-primary: #0d1117;--text-secondary:#64748b;--accent: #0891b2;--accent-hover: #0e7490;--accent-light: rgba(8, 145, 178, .12);--border: #e2e8f0;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px}[data-theme=dark]{--bg: #0d1117;--bg-surface: #161b22;--bg-nav: rgba(13, 17, 23, .92);--text-primary: #f0f6fc;--text-secondary:#8b949e;--accent: #22d3ee;--accent-hover: #67e8f9;--accent-light: rgba(34, 211, 238, .12);--border: #30363d;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 24px rgba(0, 0, 0, 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