:root{--bg:#fff;--surface:#f6f8fa;--card:#f0f2f5;--text:#1f2328;--text2:#656d76;--text3:#8b949e;--accent:#0969da;--border:#d0d7de;--font:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--header-bg:rgba(255,255,255,.85);--shadow:rgba(0,0,0,.15)}[data-theme="dark"]{--bg:#0d1117;--surface:#161b22;--card:#1c2128;--text:#e6edf3;--text2:#8b949e;--text3:#484f58;--accent:#58a6ff;--border:#30363d;--header-bg:rgba(13,17,23,.85);--shadow:rgba(0,0,0,.5)}html,body{overflow-x:clip;max-width:100%}*{box-sizing:border-box;margin:0;padding:0}section{margin:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none;transition:color .15s}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:2px solid 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