:root{--bg:#f4f6fb;--surface:#fff;--border:#e4e7ee;--text:#0f172a;--text-muted:#64748b;--text-dim:#94a3b8;--primary:#1e3a8a;--primary-2:#2563eb;--accent:#10b981;--accent-2:#059669;--warn:#f59e0b;--danger:#dc2626;--radius-sm:8px;--radius:12px;--radius-lg:16px;--shadow-sm:0 1px 2px #0f172a0a;--shadow:0 4px 16px #0f172a0f;--shadow-lg:0 8px 32px #0f172a1a;--sidebar-w:240px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,PingFang TC,Microsoft JhengHei,Segoe UI,sans-serif;font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}button,input,textarea,select{font-family:inherit;font-size:inherit}.app{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);color:#fff;background:linear-gradient(#1e3a8a 0%,#1e40af 100%);flex-shrink:0;height:100vh;padding:28px 0;position:sticky;top:0;overflow-y:auto}.sidebar .brand{border-bottom:1px solid #ffffff1f;align-items:center;gap:10px;padding:0 24px 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