:root{--text:#1d1d1f;--text-secondary:#6e6e73;--text-tertiary:#86868b;--link:#0066cc;--link-hover:#004499;--bg:#ffffff;--bg-subtle:#f5f5f7;--bg-code:#f5f5f7;--border:#d2d2d7;--border-soft:#e8e8ed;--fill:#f5f5f7;--blue-soft:#e8f1fb;--green:#248a3d;--green-soft:#e4f5e8;--amber:#b25000;--amber-soft:#fff3e0;--header-h:52px;--sidebar-w:260px;--content-w:780px;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 24px)}body,html{background:var(--bg);color:var(--text);font-family:SF Pro Text,SF Pro Display,-apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Arial,sans-serif;font-size:17px;line-height:1.47059;letter-spacing:-.022em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:2px}.mono,code{font-family:SF Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.88em;letter-spacing:0}.pr-body code{background:var(--bg-code);border-radius:4px;padding:.1em .35em}.header{position:-webkit-sticky;position:sticky;top:0;z-index:40;height:var(--header-h);background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border)}.header-inner{max-width:1440px;height:100%;margin:0 auto;padding:0 28px;justify-content:space-between;gap:24px}.brand,.header-inner{display:flex;align-items:center}.brand{gap:10px;color:var(--text);font-size:19px;font-weight:600;letter-spacing:-.021em}.brand,.brand:hover{text-decoration:none}.header-meta{display:flex;align-items:center;gap:18px;color:var(--text-secondary);font-size:12px;letter-spacing:-.01em}.header-meta a,.menu-btn{color:var(--text);font-weight:500}.menu-btn{display:none;border:0;background:transparent;font-size:15px;cursor:pointer;font-family:inherit}.shell{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:calc(100vh - 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