:root{--bg:#f5f6f8;--surface:#fff;--border:#e2e5ea;--text:#171a20;--text-muted:#6b7280;--primary:#2f5fe0;--primary-bg:#eaf0fe;--good:#157f4f;--good-bg:#e5f6ee;--bad:#c02b3c;--bad-bg:#fbe9eb;--warn:#9a6400;--warn-bg:#fdf3df;--radius:10px}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.45}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;flex-shrink:0;display:flex;flex-direction:column}.sidebar-logo{font-weight:700;font-size:15px;padding:0 8px 20px;line-height:1.3}.nav-link{display:block;padding:9px 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