:root{--bg:#f5f7fb;--panel:#fff;--text:#18212f;--muted:#6b7280;--line:#e5e7eb;--primary:#1f5eff;--danger:#b42318;--success:#067647;--warning:#b54708;--nav:#101828;--nav2:#1d2939}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--primary);text-decoration:none}.top{height:64px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:20}.brand{font-size:20px;font-weight:800;color:var(--text)}.top-right{display:flex;gap:18px;align-items:center;color:var(--muted)}.layout{display:flex;min-height:calc(100vh - 64px)}.nav{width:220px;background:var(--nav);padding:18px 12px;display:flex;flex-direction:column;gap:4px}.nav a{color:#e4e7ec;padding:10px 12px;border-radius:8px}.nav 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