*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:system-ui,Segoe UI,Roboto,sans-serif;line-height:1.5}:root{--bg:#f5f6f8;--surface:#fff;--surface-2:#f0f1f4;--sidebar-bg:#1a1d2e;--sidebar-text:#9ba3c0;--sidebar-active-bg:#6366f126;--sidebar-active-text:#a5b4fc;--border:#e4e5ea;--border-focus:#6366f1;--text:#374151;--text-muted:#6b7280;--text-heading:#111827;--primary:#4f46e5;--primary-h:#4338ca;--primary-text:#fff;--green:#16a34a;--green-bg:#dcfce7;--green-text:#15803d;--red:#dc2626;--red-bg:#fee2e2;--red-text:#b91c1c;--yellow:#d97706;--yellow-bg:#fef3c7;--yellow-text:#92400e;--blue:#2563eb;--blue-bg:#dbeafe;--blue-text:#1d4ed8;--gray-bg:#f3f4f6;--gray-text:#6b7280;--shadow-sm:0 1px 2px #0000000d;--shadow:0 1px 3px #0000001a, 0 1px 2px #0000000f;--shadow-md:0 4px 6px #00000012, 0 2px 4px #0000000f;--sidebar-w:220px;--topbar-h:52px;--radius-sm:4px;--radius:6px;--radius-lg:10px}#root{min-height:100vh;display:flex}.admin-shell{width:100%;min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--sidebar-bg);z-index:100;flex-direction:column;flex-shrink:0;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{height:var(--topbar-h);color:#fff;letter-spacing:.02em;border-bottom:1px solid #ffffff14;flex-shrink:0;align-items:center;gap:10px;padding:0 18px;font-size:15px;font-weight:600;text-decoration:none;display:flex}.sidebar-logo svg{opacity:.85;width:22px;height:22px}.sidebar-nav{flex:1;padding:12px 10px;overflow-y:auto}.sidebar-section-label{letter-spacing:.08em;text-transform:uppercase;color:#ffffff4d;padding:14px 8px 6px;font-size:10px;font-weight:600}.sidebar-link{border-radius:var(--radius);color:var(--sidebar-text);align-items:center;gap:9px;margin-bottom:1px;padding:8px 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var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;max-width:380px;padding:40px}.login-logo{text-align:center;margin-bottom:28px}.login-logo-img{object-fit:contain;width:100%;max-width:180px;height:auto;margin:0 auto 12px;display:block}.login-logo p{color:var(--text-muted);font-size:13px}.password-mask{letter-spacing:2px;color:var(--text-muted);font-family:ui-monospace,Consolas,monospace}.test-result{border-radius:var(--radius-sm);align-items:center;gap:6px;padding:3px 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