:root{--bg:#eef2f7;--panel:#ffffff;--line:#e3e8ef;--text:#0f172a;--muted:#64748b;--accent:#2563eb;--accent-strong:#1d4ed8;--accent-soft:#eff4ff;--danger:#dc2626;--radius:10px;--shadow:0 1px 2px rgba(15,23,42,0.04),0 4px 14px rgba(15,23,42,0.05);--sidebar:#0f172a}*{box-sizing:border-box}body,html{margin:0;min-height:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.sidebar{position:fixed;inset:0 auto 0 0;width:244px;padding:22px 16px;background:var(--sidebar);color:#e2e8f0;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.02em;margin-bottom:26px;color:#ffffff}.brand-mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,#3b82f6,#2563eb);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:900;box-shadow:0 2px 8px rgba(37,99,235,.55)}nav{display:grid;grid-gap:3px;gap:3px}nav a{display:block;padding:10px 12px;border-radius:8px;color:#94a3b8;font-weight:600;font-size:14.5px;transition:background .15s,color .15s}nav a:hover{background:rgba(148,163,184,.14);color:#ffffff}.main{margin-left:244px;padding:30px 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