diff --git a/static/main.js b/static/main.js
index e6e3610..f9f4d03 100644
--- a/static/main.js
+++ b/static/main.js
@@ -309,40 +309,25 @@ function renderNodeDetailCard(d) {
 
   const mem = st.memory || {};
   const root = st.rootfs || {};
-  const load = st.loadavg || '';
+  const load = Array.isArray(st.loadavg) ? st.loadavg.join(' ') : (st.loadavg || '');
 
-  // ---- SYSTEM DETAILS (zamiast "HA services")
-  const hw = d.hw || d.hardware || d.cpuinfo || st.cpuinfo || {};
-  const cpuModel = pick(
-    hw.model, hw['model-name'], hw.model_name,
-    st['cpu-model'], ver['cpu-model'], ver.cpu, st.cpu_model
-  );
-  const arch = pick(hw.arch, ver.arch, st.architecture, st.arch);
-  const sockets = pick(hw.sockets, st.sockets);
-  const coresPerSocket = pick(hw.cores, st.cores_per_socket, st.cores);
-  const threadsPerCore = pick(hw.threads, st.threads_per_core, st.threads);
-  const totalCPUs = pick(st.maxcpu, hw.total_cpus, hw.cpus);
-  const microcode = pick(hw.microcode, st.microcode);
-  const bios = pick(hw.bios, st.bios_version, ver.bios);
-  const virt = pick(hw.virtualization, ver.virtualization, st.virtualization);
-  const machine = pick(ver.machine, st.machine);
-  const kvm = pick(ver.kvm, st.kvm);
+  // ---- SYSTEM DETAILS (new content)
+  const cpuinfo = st.cpuinfo || {};
+  const boot = st['boot-info'] || st.boot_info || {};
+  const curKernel = st['current-kernel'] || st.current_kernel || {};
+  const ramStr = (mem.used != null && mem.available != null && mem.total != null)
+    ? `${humanBytes(mem.used)} used / ${humanBytes(mem.available)} free / ${humanBytes(mem.total)} total`
+    : (mem.total != null ? humanBytes(mem.total) : '—');
 
   const tech = {
-    'Kernel': pick(ver.kernel, ver.release),
-    'QEMU': pick(ver.qemu, ver['running-qemu']),
-    'KVM': kvm,
-    'PVE Manager': pick(ver.pvemanager, ver['pve-manager']),
-    'Architecture': arch,
-    'CPU model': cpuModel,
-    'Sockets': sockets,
-    'Cores/socket': coresPerSocket,
-    'Threads/core': threadsPerCore,
-    'Total CPUs': totalCPUs,
-    'Microcode': microcode,
-    'Virtualization': virt,
-    'Machine': machine,
-    'BIOS': bios
+    'PVE version': pick(st.pveversion, ver.pvemanager, ver['pve-manager']),
+    'Kernel': pick(st.kversion, curKernel.release, ver.kernel, ver.release),
+    'CPU model': pick(cpuinfo.model, st['cpu-model'], ver['cpu-model'], ver.cpu),
+    'Architecture': pick(curKernel.machine, ver.arch, st.architecture, st.arch),
+    'RAM': ramStr,
+    'Boot mode': pick(boot.mode) ? String(boot.mode).toUpperCase() : '—',
+    'Secure Boot': (boot.secureboot === 1 || boot.secureboot === '1') ? 'enabled' :
+      (boot.secureboot === 0 || boot.secureboot === '0') ? 'disabled' : '—'
   };
 
   const top = `
@@ -368,7 +353,7 @@ function renderNodeDetailCard(d) {
       </div></div></div>
       <div class="col"><div class="card border-0"><div class="card-body p-2">
         <div class="text-muted small">Kernel / QEMU</div>
-        <div class="fw-semibold">${safe(tech['Kernel'])} / ${safe(tech['QEMU'])}</div>
+        <div class="fw-semibold">${safe(tech['Kernel'])} / ${safe(pick(ver.qemu, ver['running-qemu']))}</div>
       </div></div></div>
       <div class="col"><div class="card border-0"><div class="card-body p-2">
         <div class="text-muted small">Time</div>
@@ -376,16 +361,19 @@ function renderNodeDetailCard(d) {
       </div></div></div>
     </div>`;
 
-  // --- SYSTEM DETAILS GRID 
+  // --- SYSTEM DETAILS GRID (requested fields)
   const sysDetails = kvGrid(tech, Object.keys(tech), {
-    'QEMU': 'QEMU version', 'KVM': 'KVM',
-    'CPU model': 'CPU model', 'Architecture': 'Arch',
-    'Cores/socket': 'Cores per socket', 'Threads/core': 'Threads per core',
-    'Total CPUs': 'Total logical CPUs'
+    'PVE version': 'PVE version',
+    'Kernel': 'Kernel version',
+    'CPU model': 'CPU model',
+    'Architecture': 'Arch',
+    'RAM': 'RAM (used/free/total)',
+    'Boot mode': 'Boot mode',
+    'Secure Boot': 'Secure Boot'
   });
 
   // Network config
-  const netRows = netcfg.map(n => {
+  const netRows = ensureArr(d.network_cfg).map(n => {
     return rowHTML([safe(n.iface || n.ifname), safe(n.type), safe(n.method || n.autostart), safe(n.bridge_ports || n.address || '—'), safe(n.cidr || n.netmask || '—'), safe(n.comments || '')]);
   });
   const netCfgTable = `
@@ -397,7 +385,7 @@ function renderNodeDetailCard(d) {
     </div>`;
 
   // Disks
-  const diskRows = disks.map(dv => rowHTML([safe(dv.devpath || dv.kname || dv.dev), safe(dv.model), safe(dv.size ? humanBytes(dv.size) : '—'), safe(dv.health || dv.wearout || '—'), safe(dv.serial || '—')]));
+  const diskRows = ensureArr(d.disks).map(dv => rowHTML([safe(dv.devpath || dv.kname || dv.dev), safe(dv.model), safe(dv.size ? humanBytes(dv.size) : '—'), safe(dv.health || dv.wearout || '—'), safe(dv.serial || '—')]));
   const diskTable = `
     <div class="table-responsive">
       <table class="table table-sm table-striped align-middle table-nowrap">
@@ -407,6 +395,7 @@ function renderNodeDetailCard(d) {
     </div>`;
 
   // Subscription
+  const sub = d.subscription || {};
   const subBox = `
     <div class="small">
       <div>Status: ${badge(safe(sub.status || 'unknown'), /active|valid/i.test(sub.status || '') ? 'ok' : 'warn')}</div>