:root{--bg-primary:#0d1117;--bg-secondary:#161b22;--bg-tertiary:#21262d;--text-primary:#e6edf3;--text-secondary:#8b949e;--accent:#58a6ff;--accent-hover:#79c0ff;--border:#30363d;--font-sans:'Inter', system-ui, -apple-system, sans-serif;--max-width:960px;--nav-height:64px}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height)}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-hover)}img{max-width:100%;display:block}.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:rgba(13,17,23,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:100;display:flex;align-items:center;justify-content:center}.nav-inner{width:100%;max-width:var(--max-width);padding:0 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