:root{--nav:#10223a;--nav-2:#132b49;--accent:#2f6fed;--bg:#f4f7fb;--card:#fff;--text:#14213d;--muted:#6d7890;--line:#e4e9f2;--success:#1fb85b;--danger:#d9534f;--shadow:0 8px 24px rgba(20,33,61,.06)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}a{text-decoration:none;color:inherit}.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:226px;padding:22px 10px;background:linear-gradient(180deg,var(--nav),#0d1b2d);color:#fff;overflow-y:auto}.brand{font-size:18px;font-weight:800;padding:0 12px 22px;white-space:nowrap}.sidebar-nav{display:flex;flex-direction:column;gap:4px}.sidebar-nav a{display:block;padding:10px 12px;border-radius:7px;color:#e7edf7;font-size:14px}.sidebar-nav a:hover,.sidebar-nav a.active{background:var(--accent);color:#fff}.nav-section{padding:18px 12px 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