*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #0f1117;--color-surface: #1a1d27;--color-border: #2a2d3a;--color-text: #e2e4ed;--color-muted: #6b7280;--color-primary: #6366f1;--color-primary-hover: #4f52d9;--color-success: #22c55e;--color-error: #ef4444;--color-success-bg: #052e16;--color-error-bg: #2d0707;--radius: 8px;--sidebar-width: 220px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;color:var(--color-text);background:var(--color-bg)}body{min-height:100vh}code{font-family:SFMono-Regular,Consolas,monospace;font-size:13px}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;padding:24px 0;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{font-size:16px;font-weight:700;color:var(--color-primary);padding:0 20px 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