:root{--bg: #f6f7f9;--panel: #ffffff;--border: #e5e7eb;--text: #111827;--muted: #6b7280;--primary: #4d085e;--primary-dark: #3a0647;--danger: #dc2626;--ok: #059669;--warn: #d97706;--radius: 10px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px}a{color:var(--primary);text-decoration:none}h1{font-size:22px;margin:0 0 4px}h2{font-size:16px;margin:0 0 12px}.app{display:flex;min-height:100vh}.sidebar{width:220px;background:#0f172a;color:#cbd5e1;padding:18px 12px;flex-shrink:0}.sidebar .brand{background:#fff;border-radius:8px;padding:5px 8px;margin:2px 4px 8px;display:flex;align-items:center;gap:9px}.sidebar .brand .brand-icon{display:block;height:auto;width:100%;max-width:148px}.sidebar .brand .brand-name{font-size:19px;font-weight:700;color:#173f7c;letter-spacing:.2px}.sidebar .brand-sub{color:#94a3b8;font-size:12px;padding:0 6px 12px}.sidebar nav 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