:root{--nav:#173b5f;--nav2:#214d78;--primary:#1f4e79;--primary2:#245b8a;--bg:#f4f6f8;--line:#dfe4ea;--text:#1f2937;--muted:#6b7280;--soft:#eef3f8;--danger:#b42318;--ok:#16794b;--warn:#9a6700;--shadow:0 1px 2px rgba(0,0,0,.04)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}.hidden{display:none!important}.app-shell{min-height:100vh;display:flex}.sidebar{position:fixed;left:0;top:0;bottom:0;width:220px;background:var(--nav);color:#fff;display:flex;flex-direction:column}.logo{height:64px;display:flex;align-items:center;gap:10px;padding:0 18px;border-bottom:1px solid rgba(255,255,255,.12)}.logo>span{width:34px;height:34px;border-radius:6px;display:grid;place-items:center;background:#fff;color:var(--nav);font-weight:700}.logo b{display:block;font-size:15px}.logo small{opacity:.65}.sidebar nav{padding:12px 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