:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #273449;--line: #334155;--text: #e2e8f0;--muted: #94a3b8;--primary: #2563eb;--primary-hover: #1d4ed8;--green: #16a34a;--amber: #f59e0b;--red: #dc2626;--scan: #facc15}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#f1f5f9;color:#0f172a}a{color:var(--primary);text-decoration:none}button{font-family:inherit}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--bg);color:var(--text);display:flex;flex-direction:column;padding:16px 12px;gap:4px}.sidebar .brand{font-size:20px;font-weight:700;padding:8px 12px 16px}.sidebar .brand small{display:block;color:var(--muted);font-weight:400;font-size:12px}.nav-link{color:var(--text);padding:11px 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