diff --git a/frontend/src/pages/xray/BalancerFormModal.vue b/frontend/src/pages/xray/BalancerFormModal.vue
index 574bee3f..07c6d780 100644
--- a/frontend/src/pages/xray/BalancerFormModal.vue
+++ b/frontend/src/pages/xray/BalancerFormModal.vue
@@ -52,11 +52,28 @@ watch(() => props.open, (next) => {
   }
 });
 
+const tagEmpty = computed(() => !form.tag?.trim());
 const duplicateTag = computed(
-  () => !form.tag || props.otherTags.includes(form.tag),
+  () => !!form.tag && props.otherTags.includes(form.tag.trim()),
 );
 const emptySelector = computed(() => form.selector.length === 0);
-const isValid = computed(() => !duplicateTag.value && !emptySelector.value);
+const isValid = computed(
+  () => !tagEmpty.value && !duplicateTag.value && !emptySelector.value,
+);
+
+const tagValidateStatus = computed(() => {
+  if (tagEmpty.value) return 'error';
+  if (duplicateTag.value) return 'warning';
+  return 'success';
+});
+const tagHelp = computed(() => {
+  if (tagEmpty.value) return 'Tag is required';
+  if (duplicateTag.value) return 'Tag already used by another balancer';
+  return '';
+});
+
+const selectorValidateStatus = computed(() => (emptySelector.value ? 'error' : 'success'));
+const selectorHelp = computed(() => (emptySelector.value ? 'Pick at least one outbound' : ''));
 
 function close() { emit('update:open', false); }
 function onOk() {
@@ -78,7 +95,12 @@ const okText = computed(() =>
   <a-modal :open="open" :title="title" :ok-text="okText" :cancel-text="t('close')"
     :ok-button-props="{ disabled: !isValid }" :mask-closable="false" @ok="onOk" @cancel="close">
     <a-form :colon="false" :label-col="{ md: { span: 8 } }" :wrapper-col="{ md: { span: 14 } }">
-      <a-form-item label="Tag" :validate-status="duplicateTag ? 'warning' : 'success'" has-feedback>
+      <a-form-item
+        label="Tag"
+        :validate-status="tagValidateStatus"
+        :help="tagHelp"
+        has-feedback
+      >
         <a-input v-model:value="form.tag" placeholder="unique balancer tag" />
       </a-form-item>
 
@@ -88,7 +110,12 @@ const okText = computed(() =>
         </a-select>
       </a-form-item>
 
-      <a-form-item label="Selector" :validate-status="emptySelector ? 'warning' : 'success'" has-feedback>
+      <a-form-item
+        label="Selector"
+        :validate-status="selectorValidateStatus"
+        :help="selectorHelp"
+        has-feedback
+      >
         <a-select v-model:value="form.selector" mode="tags" :token-separators="[',']">
           <a-select-option v-for="tag in outboundTags" :key="tag" :value="tag">{{ tag }}</a-select-option>
         </a-select>
diff --git a/frontend/src/pages/xray/BalancersTab.vue b/frontend/src/pages/xray/BalancersTab.vue
index d9ba980d..dc0145fa 100644
--- a/frontend/src/pages/xray/BalancersTab.vue
+++ b/frontend/src/pages/xray/BalancersTab.vue
@@ -118,7 +118,11 @@ function confirmDelete(idx) {
     okText: t('delete'),
     okType: 'danger',
     cancelText: t('cancel'),
-    onOk: () => props.templateSettings.routing.balancers.splice(idx, 1),
+    // Wrap in a block so we discard splice's return value — AD-Vue
+    // 4 leaves the modal open if onOk returns a truthy non-thenable
+    // (it expects a Promise to await), and splice() returns the array
+    // of removed items.
+    onOk: () => { props.templateSettings.routing.balancers.splice(idx, 1); },
   });
 }
 
diff --git a/frontend/src/pages/xray/BasicsTab.vue b/frontend/src/pages/xray/BasicsTab.vue
index 2c5c6f7c..196dcb06 100644
--- a/frontend/src/pages/xray/BasicsTab.vue
+++ b/frontend/src/pages/xray/BasicsTab.vue
@@ -2,6 +2,7 @@
 import { computed } from 'vue';
 import { useI18n } from 'vue-i18n';
 import { ExclamationCircleFilled, CloudOutlined, ApiOutlined } from '@ant-design/icons-vue';
+import { Modal } from 'ant-design-vue';
 
 import { OutboundDomainStrategies } from '@/models/outbound.js';
 import SettingListItem from '@/components/SettingListItem.vue';
@@ -25,7 +26,17 @@ const props = defineProps({
   nordExist: { type: Boolean, default: false },
 });
 
-const emit = defineEmits(['update:outbound-test-url', 'show-warp', 'show-nord']);
+const emit = defineEmits(['update:outbound-test-url', 'show-warp', 'show-nord', 'reset-default']);
+
+function confirmResetDefault() {
+  Modal.confirm({
+    title: t('pages.settings.resetDefaultConfig'),
+    okText: t('reset'),
+    okType: 'danger',
+    cancelText: t('cancel'),
+    onOk: () => { emit('reset-default'); },
+  });
+}
 
 // === Static option lists (mirror legacy) =============================
 const ROUTING_DOMAIN_STRATEGIES = ['AsIs', 'IPIfNonMatch', 'IPOnDemand'];
@@ -35,35 +46,61 @@ const ERROR_LOG = ['none', './error.log'];
 const MASK_ADDRESS = ['quarter', 'half', 'full'];
 const BITTORRENT_PROTOCOLS = ['bittorrent'];
 
-// Country lists copied from the legacy template's settingsData. Keep
-// them alphabetised by ISO code so additions stay obvious in diffs.
+// Country / service lists mirror the legacy panel's settingsData
+// (web/html/xray.html on main). Keep additions in sync with that file
+// so Vue 3 + legacy stay swappable while the migration finishes.
 const IPS_OPTIONS = [
   { label: 'Private IPs', value: 'geoip:private' },
   { label: '🇮🇷 Iran', value: 'ext:geoip_IR.dat:ir' },
   { label: '🇨🇳 China', value: 'geoip:cn' },
   { label: '🇷🇺 Russia', value: 'ext:geoip_RU.dat:ru' },
-];
-const BLOCK_DOMAINS_OPTIONS = [
-  { label: 'Ads (Iran)', value: 'ext:geosite_IR.dat:category-ads-all' },
-  { label: 'Ads', value: 'geosite:category-ads-all' },
-  { label: '🇮🇷 Iran', value: 'ext:geosite_IR.dat:category-ir' },
-  { label: '🇨🇳 China', value: 'geosite:cn' },
-  { label: '🇷🇺 Russia', value: 'ext:geosite_RU.dat:category-ru' },
+  { label: '🇻🇳 Vietnam', value: 'geoip:vn' },
+  { label: '🇪🇸 Spain', value: 'geoip:es' },
+  { label: '🇮🇩 Indonesia', value: 'geoip:id' },
+  { label: '🇺🇦 Ukraine', value: 'geoip:ua' },
+  { label: '🇹🇷 Türkiye', value: 'geoip:tr' },
+  { label: '🇧🇷 Brazil', value: 'geoip:br' },
 ];
 const DOMAINS_OPTIONS = [
-  { label: 'Private DNS', value: 'geosite:private' },
-  { label: '🇮🇷 Iran', value: 'ext:geosite_IR.dat:category-ir' },
+  { label: '🇮🇷 Iran', value: 'ext:geosite_IR.dat:ir' },
+  { label: '🇮🇷 .ir', value: 'regexp:.*\\.ir$' },
+  { label: '🇮🇷 .ایران', value: 'regexp:.*\\.xn--mgba3a4f16a$' },
   { label: '🇨🇳 China', value: 'geosite:cn' },
-  { label: '🇷🇺 Russia', value: 'ext:geosite_RU.dat:category-ru' },
+  { label: '🇨🇳 .cn', value: 'regexp:.*\\.cn$' },
+  { label: '🇷🇺 Russia', value: 'ext:geosite_RU.dat:ru-available-only-inside' },
+  { label: '🇷🇺 .ru', value: 'regexp:.*\\.ru$' },
+  { label: '🇷🇺 .su', value: 'regexp:.*\\.su$' },
+  { label: '🇷🇺 .рф', value: 'regexp:.*\\.xn--p1ai$' },
+  { label: '🇻🇳 .vn', value: 'regexp:.*\\.vn$' },
+];
+const BLOCK_DOMAINS_OPTIONS = [
+  { label: 'Ads All', value: 'geosite:category-ads-all' },
+  { label: 'Ads IR 🇮🇷', value: 'ext:geosite_IR.dat:category-ads-all' },
+  { label: 'Ads RU 🇷🇺', value: 'ext:geosite_RU.dat:category-ads-all' },
+  { label: 'Malware 🇮🇷', value: 'ext:geosite_IR.dat:malware' },
+  { label: 'Phishing 🇮🇷', value: 'ext:geosite_IR.dat:phishing' },
+  { label: 'Cryptominers 🇮🇷', value: 'ext:geosite_IR.dat:cryptominers' },
+  { label: 'Adult +18', value: 'geosite:category-porn' },
+  { label: '🇮🇷 Iran', value: 'ext:geosite_IR.dat:ir' },
+  { label: '🇮🇷 .ir', value: 'regexp:.*\\.ir$' },
+  { label: '🇮🇷 .ایران', value: 'regexp:.*\\.xn--mgba3a4f16a$' },
+  { label: '🇨🇳 China', value: 'geosite:cn' },
+  { label: '🇨🇳 .cn', value: 'regexp:.*\\.cn$' },
+  { label: '🇷🇺 Russia', value: 'ext:geosite_RU.dat:ru-available-only-inside' },
+  { label: '🇷🇺 .ru', value: 'regexp:.*\\.ru$' },
+  { label: '🇷🇺 .su', value: 'regexp:.*\\.su$' },
+  { label: '🇷🇺 .рф', value: 'regexp:.*\\.xn--p1ai$' },
+  { label: '🇻🇳 .vn', value: 'regexp:.*\\.vn$' },
 ];
 const SERVICES_OPTIONS = [
-  { label: 'Google', value: 'geosite:google' },
   { label: 'Apple', value: 'geosite:apple' },
   { label: 'Meta', value: 'geosite:meta' },
-  { label: 'Microsoft', value: 'geosite:microsoft' },
-  { label: 'Netflix', value: 'geosite:netflix' },
+  { label: 'Google', value: 'geosite:google' },
   { label: 'OpenAI', value: 'geosite:openai' },
   { label: 'Spotify', value: 'geosite:spotify' },
+  { label: 'Netflix', value: 'geosite:netflix' },
+  { label: 'Reddit', value: 'geosite:reddit' },
+  { label: 'Speedtest', value: 'geosite:speedtest' },
 ];
 
 // === Routing-rule helpers (matches legacy templateRule{Getter,Setter}) ==
@@ -441,6 +478,14 @@ const localOutboundTestUrl = computed({
         </template>
       </SettingListItem>
     </a-collapse-panel>
+
+    <a-collapse-panel key="reset" :header="t('pages.settings.resetDefaultConfig')">
+      <a-space direction="horizontal" :style="{ padding: '0 20px' }">
+        <a-button danger @click="confirmResetDefault">
+          {{ t('pages.settings.resetDefaultConfig') }}
+        </a-button>
+      </a-space>
+    </a-collapse-panel>
   </a-collapse>
 </template>
 
diff --git a/frontend/src/pages/xray/OutboundFormModal.vue b/frontend/src/pages/xray/OutboundFormModal.vue
index 080b9400..2e338d4f 100644
--- a/frontend/src/pages/xray/OutboundFormModal.vue
+++ b/frontend/src/pages/xray/OutboundFormModal.vue
@@ -112,6 +112,20 @@ const duplicateTag = computed(() => {
   return (props.existingTags || []).includes(myTag);
 });
 
+const tagEmpty = computed(() => !outbound.value?.tag?.trim());
+
+const tagValidateStatus = computed(() => {
+  if (tagEmpty.value) return 'error';
+  if (duplicateTag.value) return 'warning';
+  return 'success';
+});
+
+const tagHelp = computed(() => {
+  if (tagEmpty.value) return 'Tag is required';
+  if (duplicateTag.value) return 'Tag already used by another outbound';
+  return '';
+});
+
 // ============== Submit ==============
 function onOk() {
   if (!outbound.value) return;
@@ -215,7 +229,7 @@ function regenerateWgKeys() {
           </a-form-item>
 
           <!-- Tag -->
-          <a-form-item label="Tag" :validate-status="duplicateTag ? 'warning' : 'success'" has-feedback>
+          <a-form-item label="Tag" :validate-status="tagValidateStatus" :help="tagHelp" has-feedback>
             <a-input v-model:value="outbound.tag" placeholder="unique-tag" />
           </a-form-item>
 
@@ -235,7 +249,6 @@ function regenerateWgKeys() {
               <a-input v-model:value="outbound.settings.redirect" />
             </a-form-item>
 
-            <a-divider :style="{ margin: '4px 0' }">Fragment</a-divider>
             <a-form-item label="Fragment">
               <a-switch :checked="!!outbound.settings.fragment && Object.keys(outbound.settings.fragment).length > 0"
                 @change="(checked) => outbound.settings.fragment = checked ? { packets: 'tlshello', length: '100-200', interval: '10-20', maxSplit: '300-400' } : {}" />
@@ -257,7 +270,6 @@ function regenerateWgKeys() {
               </a-form-item>
             </template>
 
-            <a-divider :style="{ margin: '4px 0' }">Noises</a-divider>
             <a-form-item label="Noises">
               <a-switch :checked="(outbound.settings.noises || []).length > 0"
                 @change="(checked) => outbound.settings.noises = checked ? [{ type: 'rand', packet: '10-20', delay: '10-16', applyTo: 'ip' }] : []" />
@@ -270,15 +282,15 @@ function regenerateWgKeys() {
               </a-button>
             </a-form-item>
             <template v-for="(noise, index) in outbound.settings.noises || []" :key="index">
-              <a-divider :style="{ margin: '4px 0' }">
-                Noise {{ index + 1 }}
+              <div class="item-heading">
+                <span>Noise {{ index + 1 }}</span>
                 <DeleteOutlined v-if="outbound.settings.noises.length > 1" class="danger-icon"
                   @click="outbound.settings.noises.splice(index, 1)" />
-              </a-divider>
+              </div>
               <a-form-item label="Type">
                 <a-select v-model:value="noise.type">
                   <a-select-option v-for="x in ['rand', 'base64', 'str', 'hex']" :key="x" :value="x">{{ x
-                    }}</a-select-option>
+                  }}</a-select-option>
                 </a-select>
               </a-form-item>
               <a-form-item label="Packet">
@@ -300,7 +312,7 @@ function regenerateWgKeys() {
             <a-form-item label="Response Type">
               <a-select v-model:value="outbound.settings.type">
                 <a-select-option v-for="x in ['', 'none', 'http']" :key="x" :value="x">{{ x || '(empty)'
-                  }}</a-select-option>
+                }}</a-select-option>
               </a-select>
             </a-form-item>
           </template>
@@ -321,10 +333,10 @@ function regenerateWgKeys() {
               </a-button>
             </a-form-item>
             <template v-for="(rule, index) in outbound.settings.rules || []" :key="index">
-              <a-divider :style="{ margin: '4px 0' }">
-                Rule {{ index + 1 }}
+              <div class="item-heading">
+                <span>Rule {{ index + 1 }}</span>
                 <DeleteOutlined class="danger-icon" @click="outbound.settings.rules.splice(index, 1)" />
-              </a-divider>
+              </div>
               <a-form-item label="Action">
                 <a-select v-model:value="rule.action">
                   <a-select-option v-for="a in DNSRuleActions" :key="a" :value="a">{{ a }}</a-select-option>
@@ -382,11 +394,11 @@ function regenerateWgKeys() {
               </a-button>
             </a-form-item>
             <template v-for="(peer, index) in outbound.settings.peers || []" :key="index">
-              <a-divider :style="{ margin: '4px 0' }">
-                Peer {{ index + 1 }}
+              <div class="item-heading">
+                <span>Peer {{ index + 1 }}</span>
                 <DeleteOutlined v-if="outbound.settings.peers.length > 1" class="danger-icon"
                   @click="outbound.settings.peers.splice(index, 1)" />
-              </a-divider>
+              </div>
               <a-form-item label="Endpoint">
                 <a-input v-model:value="peer.endpoint" />
               </a-form-item>
@@ -442,6 +454,41 @@ function regenerateWgKeys() {
             <a-form-item v-if="isVLESS" label="Reverse tag">
               <a-input v-model:value="outbound.settings.reverseTag" placeholder="optional" />
             </a-form-item>
+
+            <!-- Reverse-Sniffing — surfaced only when a reverse tag is set,
+                 mirroring the legacy form. Defaults populated by the model
+                 so the toggle/checkboxes always have a backing field. -->
+            <template v-if="isVLESS && outbound.settings.reverseTag">
+              <a-form-item label="Reverse Sniffing">
+                <a-switch v-model:checked="outbound.settings.reverseSniffing.enabled" />
+              </a-form-item>
+              <template v-if="outbound.settings.reverseSniffing.enabled">
+                <!-- Align the checkbox row with the input fields above —
+                     same span as wrapper-col (14), offset by label-col (8)
+                     so the row starts where Reverse Tag's input starts. -->
+                <a-form-item :wrapper-col="{ md: { span: 14, offset: 8 } }">
+                  <a-checkbox-group v-model:value="outbound.settings.reverseSniffing.destOverride"
+                    class="sniffing-options">
+                    <a-checkbox v-for="(value, label) in SNIFFING_OPTION" :key="value" :value="value">{{ label
+                    }}</a-checkbox>
+                  </a-checkbox-group>
+                </a-form-item>
+                <a-form-item label="Metadata Only">
+                  <a-switch v-model:checked="outbound.settings.reverseSniffing.metadataOnly" />
+                </a-form-item>
+                <a-form-item label="Route Only">
+                  <a-switch v-model:checked="outbound.settings.reverseSniffing.routeOnly" />
+                </a-form-item>
+                <a-form-item label="IPs Excluded">
+                  <a-select v-model:value="outbound.settings.reverseSniffing.ipsExcluded" mode="tags"
+                    :token-separators="[',']" placeholder="IP/CIDR/geoip:*/ext:*" :style="{ width: '100%' }" />
+                </a-form-item>
+                <a-form-item label="Domains Excluded">
+                  <a-select v-model:value="outbound.settings.reverseSniffing.domainsExcluded" mode="tags"
+                    :token-separators="[',']" placeholder="domain:*/ext:*" :style="{ width: '100%' }" />
+                </a-form-item>
+              </template>
+            </template>
             <a-form-item v-if="outbound.canEnableTlsFlow()" label="Flow">
               <a-select v-model:value="outbound.settings.flow">
                 <a-select-option value="">{{ t('none') }}</a-select-option>
@@ -489,7 +536,6 @@ function regenerateWgKeys() {
 
           <!-- ============== Stream settings ============== -->
           <template v-if="outbound.canEnableStream()">
-            <a-divider :style="{ margin: '4px 0' }">{{ t('transmission') }}</a-divider>
             <a-form-item :label="t('transmission')">
               <a-select :value="outbound.stream.network" @change="streamNetworkChange">
                 <a-select-option v-for="net in (isHysteria ? [...NETWORKS, 'hysteria'] : NETWORKS)" :key="net"
@@ -573,7 +619,8 @@ function regenerateWgKeys() {
               </a-form-item>
             </template>
 
-            <!-- XHTTP -->
+            <!-- XHTTP — full parity with legacy outbound form. The model
+                 already carries every field below; we just surface them. -->
             <template v-if="outbound.stream.network === 'xhttp'">
               <a-form-item :label="t('host')">
                 <a-input v-model:value="outbound.stream.xhttp.host" />
@@ -581,17 +628,160 @@ function regenerateWgKeys() {
               <a-form-item :label="t('path')">
                 <a-input v-model:value="outbound.stream.xhttp.path" />
               </a-form-item>
+
+              <a-form-item :label="t('pages.inbounds.stream.tcp.requestHeader')">
+                <a-button size="small" @click="outbound.stream.xhttp.addHeader('', '')">
+                  <template #icon>
+                    <PlusOutlined />
+                  </template>
+                </a-button>
+              </a-form-item>
+              <a-form-item :wrapper-col="{ span: 24 }">
+                <a-input-group v-for="(header, idx) in outbound.stream.xhttp.headers" :key="idx" compact class="mb-8">
+                  <a-input v-model:value="header.name" :style="{ width: '45%' }" placeholder="Name">
+                    <template #addonBefore>{{ idx + 1 }}</template>
+                  </a-input>
+                  <a-input v-model:value="header.value" :style="{ width: '45%' }" placeholder="Value" />
+                  <a-button @click="outbound.stream.xhttp.removeHeader(idx)">
+                    <template #icon>
+                      <MinusOutlined />
+                    </template>
+                  </a-button>
+                </a-input-group>
+              </a-form-item>
+
               <a-form-item label="Mode">
                 <a-select v-model:value="outbound.stream.xhttp.mode">
                   <a-select-option v-for="m in Object.values(MODE_OPTION)" :key="m" :value="m">{{ m }}</a-select-option>
                 </a-select>
               </a-form-item>
-              <a-form-item label="Padding bytes">
+              <a-form-item v-if="outbound.stream.xhttp.mode === 'packet-up'" label="Max Upload Size (Byte)">
+                <a-input v-model:value="outbound.stream.xhttp.scMaxEachPostBytes" />
+              </a-form-item>
+              <a-form-item v-if="outbound.stream.xhttp.mode === 'packet-up'" label="Min Upload Interval (Ms)">
+                <a-input v-model:value="outbound.stream.xhttp.scMinPostsIntervalMs" />
+              </a-form-item>
+
+              <a-form-item label="Padding Bytes">
                 <a-input v-model:value="outbound.stream.xhttp.xPaddingBytes" />
               </a-form-item>
+              <a-form-item label="Padding Obfs Mode">
+                <a-switch v-model:checked="outbound.stream.xhttp.xPaddingObfsMode" />
+              </a-form-item>
+              <template v-if="outbound.stream.xhttp.xPaddingObfsMode">
+                <a-form-item label="Padding Key">
+                  <a-input v-model:value="outbound.stream.xhttp.xPaddingKey" placeholder="x_padding" />
+                </a-form-item>
+                <a-form-item label="Padding Header">
+                  <a-input v-model:value="outbound.stream.xhttp.xPaddingHeader" placeholder="X-Padding" />
+                </a-form-item>
+                <a-form-item label="Padding Placement">
+                  <a-select v-model:value="outbound.stream.xhttp.xPaddingPlacement">
+                    <a-select-option value="">Default (queryInHeader)</a-select-option>
+                    <a-select-option value="queryInHeader">queryInHeader</a-select-option>
+                    <a-select-option value="header">header</a-select-option>
+                    <a-select-option value="cookie">cookie</a-select-option>
+                    <a-select-option value="query">query</a-select-option>
+                  </a-select>
+                </a-form-item>
+                <a-form-item label="Padding Method">
+                  <a-select v-model:value="outbound.stream.xhttp.xPaddingMethod">
+                    <a-select-option value="">Default (repeat-x)</a-select-option>
+                    <a-select-option value="repeat-x">repeat-x</a-select-option>
+                    <a-select-option value="tokenish">tokenish</a-select-option>
+                  </a-select>
+                </a-form-item>
+              </template>
+
+              <a-form-item label="Uplink HTTP Method">
+                <a-select v-model:value="outbound.stream.xhttp.uplinkHTTPMethod">
+                  <a-select-option value="">Default (POST)</a-select-option>
+                  <a-select-option value="POST">POST</a-select-option>
+                  <a-select-option value="PUT">PUT</a-select-option>
+                  <a-select-option value="GET" :disabled="outbound.stream.xhttp.mode !== 'packet-up'">GET (packet-up
+                    only)</a-select-option>
+                </a-select>
+              </a-form-item>
+
+              <a-form-item label="Session Placement">
+                <a-select v-model:value="outbound.stream.xhttp.sessionPlacement">
+                  <a-select-option value="">Default (path)</a-select-option>
+                  <a-select-option value="path">path</a-select-option>
+                  <a-select-option value="header">header</a-select-option>
+                  <a-select-option value="cookie">cookie</a-select-option>
+                  <a-select-option value="query">query</a-select-option>
+                </a-select>
+              </a-form-item>
+              <a-form-item
+                v-if="outbound.stream.xhttp.sessionPlacement && outbound.stream.xhttp.sessionPlacement !== 'path'"
+                label="Session Key">
+                <a-input v-model:value="outbound.stream.xhttp.sessionKey" placeholder="x_session" />
+              </a-form-item>
+
+              <a-form-item label="Sequence Placement">
+                <a-select v-model:value="outbound.stream.xhttp.seqPlacement">
+                  <a-select-option value="">Default (path)</a-select-option>
+                  <a-select-option value="path">path</a-select-option>
+                  <a-select-option value="header">header</a-select-option>
+                  <a-select-option value="cookie">cookie</a-select-option>
+                  <a-select-option value="query">query</a-select-option>
+                </a-select>
+              </a-form-item>
+              <a-form-item v-if="outbound.stream.xhttp.seqPlacement && outbound.stream.xhttp.seqPlacement !== 'path'"
+                label="Sequence Key">
+                <a-input v-model:value="outbound.stream.xhttp.seqKey" placeholder="x_seq" />
+              </a-form-item>
+
+              <a-form-item v-if="outbound.stream.xhttp.mode === 'packet-up'" label="Uplink Data Placement">
+                <a-select v-model:value="outbound.stream.xhttp.uplinkDataPlacement">
+                  <a-select-option value="">Default (body)</a-select-option>
+                  <a-select-option value="body">body</a-select-option>
+                  <a-select-option value="header">header</a-select-option>
+                  <a-select-option value="cookie">cookie</a-select-option>
+                  <a-select-option value="query">query</a-select-option>
+                </a-select>
+              </a-form-item>
+              <a-form-item v-if="outbound.stream.xhttp.mode === 'packet-up'
+                && outbound.stream.xhttp.uplinkDataPlacement
+                && outbound.stream.xhttp.uplinkDataPlacement !== 'body'" label="Uplink Data Key">
+                <a-input v-model:value="outbound.stream.xhttp.uplinkDataKey" placeholder="x_data" />
+              </a-form-item>
+              <a-form-item v-if="outbound.stream.xhttp.mode === 'packet-up'
+                && outbound.stream.xhttp.uplinkDataPlacement
+                && outbound.stream.xhttp.uplinkDataPlacement !== 'body'" label="Uplink Chunk Size">
+                <a-input-number v-model:value="outbound.stream.xhttp.uplinkChunkSize" :min="0"
+                  placeholder="0 (unlimited)" />
+              </a-form-item>
+
+              <a-form-item
+                v-if="outbound.stream.xhttp.mode === 'stream-up' || outbound.stream.xhttp.mode === 'stream-one'"
+                label="No gRPC Header">
+                <a-switch v-model:checked="outbound.stream.xhttp.noGRPCHeader" />
+              </a-form-item>
+
               <a-form-item label="XMUX">
                 <a-switch v-model:checked="outbound.stream.xhttp.enableXmux" />
               </a-form-item>
+              <template v-if="outbound.stream.xhttp.enableXmux">
+                <a-form-item v-if="!outbound.stream.xhttp.xmux.maxConnections" label="Max Concurrency">
+                  <a-input v-model:value="outbound.stream.xhttp.xmux.maxConcurrency" />
+                </a-form-item>
+                <a-form-item v-if="!outbound.stream.xhttp.xmux.maxConcurrency" label="Max Connections">
+                  <a-input v-model:value="outbound.stream.xhttp.xmux.maxConnections" />
+                </a-form-item>
+                <a-form-item label="Max Reuse Times">
+                  <a-input v-model:value="outbound.stream.xhttp.xmux.cMaxReuseTimes" />
+                </a-form-item>
+                <a-form-item label="Max Request Times">
+                  <a-input v-model:value="outbound.stream.xhttp.xmux.hMaxRequestTimes" />
+                </a-form-item>
+                <a-form-item label="Max Reusable Secs">
+                  <a-input v-model:value="outbound.stream.xhttp.xmux.hMaxReusableSecs" />
+                </a-form-item>
+                <a-form-item label="Keep Alive Period">
+                  <a-input-number v-model:value="outbound.stream.xhttp.xmux.hKeepAlivePeriod" :min="0" />
+                </a-form-item>
+              </template>
             </template>
 
             <!-- Hysteria transport -->
@@ -628,7 +818,6 @@ function regenerateWgKeys() {
 
           <!-- ============== TLS / Reality ============== -->
           <template v-if="outbound.canEnableTls()">
-            <a-divider :style="{ margin: '4px 0' }">{{ t('security') }}</a-divider>
             <a-form-item :label="t('security')">
               <a-radio-group v-model:value="outbound.stream.security" button-style="solid">
                 <a-radio-button value="none">{{ t('none') }}</a-radio-button>
@@ -689,7 +878,6 @@ function regenerateWgKeys() {
 
           <!-- ============== sockopt ============== -->
           <template v-if="outbound.stream">
-            <a-divider :style="{ margin: '4px 0' }">Sockopts</a-divider>
             <a-form-item label="Sockopts">
               <a-switch v-model:checked="outbound.stream.sockoptSwitch" />
             </a-form-item>
@@ -721,7 +909,6 @@ function regenerateWgKeys() {
 
           <!-- ============== Mux ============== -->
           <template v-if="outbound.canEnableMux()">
-            <a-divider :style="{ margin: '4px 0' }">{{ t('pages.settings.mux') }}</a-divider>
             <a-form-item :label="t('pages.settings.mux')">
               <a-switch v-model:checked="outbound.mux.enabled" />
             </a-form-item>
@@ -735,7 +922,7 @@ function regenerateWgKeys() {
               <a-form-item label="xudp UDP 443">
                 <a-select v-model:value="outbound.mux.xudpProxyUDP443">
                   <a-select-option v-for="x in ['reject', 'allow', 'skip']" :key="x" :value="x">{{ x
-                    }}</a-select-option>
+                  }}</a-select-option>
                 </a-select>
               </a-form-item>
             </template>
@@ -780,8 +967,40 @@ function regenerateWgKeys() {
   margin-left: 8px;
 }
 
+.mb-8 {
+  margin-bottom: 8px;
+}
+
+.section-heading {
+  font-weight: 500;
+  margin: 12px 0 6px;
+  opacity: 0.85;
+}
+
+.item-heading {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-weight: 500;
+  margin: 8px 0 4px;
+  opacity: 0.85;
+}
+
 .json-editor {
   font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
   font-size: 12px;
 }
+
+/* AD-Vue 4 renders a-checkbox children inside a-checkbox-group as
+ * inline-block, but inside a narrow form wrapper they can wrap
+ * inconsistently. Force a clean horizontal row with even gaps. */
+.sniffing-options {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px 16px;
+}
+
+.sniffing-options :deep(.ant-checkbox-wrapper) {
+  margin-inline-start: 0;
+}
 </style>
diff --git a/frontend/src/pages/xray/OutboundsTab.vue b/frontend/src/pages/xray/OutboundsTab.vue
index 1d8a2459..f490de63 100644
--- a/frontend/src/pages/xray/OutboundsTab.vue
+++ b/frontend/src/pages/xray/OutboundsTab.vue
@@ -79,7 +79,7 @@ function confirmDelete(idx) {
     okText: t('delete'),
     okType: 'danger',
     cancelText: t('cancel'),
-    onOk: () => props.templateSettings.outbounds.splice(idx, 1),
+    onOk: () => { props.templateSettings.outbounds.splice(idx, 1); },
   });
 }
 function setFirst(idx) {
diff --git a/frontend/src/pages/xray/RoutingTab.vue b/frontend/src/pages/xray/RoutingTab.vue
index f0b27e85..beb28ca9 100644
--- a/frontend/src/pages/xray/RoutingTab.vue
+++ b/frontend/src/pages/xray/RoutingTab.vue
@@ -129,7 +129,7 @@ function confirmDelete(idx) {
     okText: t('delete'),
     okType: 'danger',
     cancelText: t('cancel'),
-    onOk: () => props.templateSettings.routing.rules.splice(idx, 1),
+    onOk: () => { props.templateSettings.routing.rules.splice(idx, 1); },
   });
 }
 
diff --git a/frontend/src/pages/xray/XrayPage.vue b/frontend/src/pages/xray/XrayPage.vue
index 9f542b9a..90afab4b 100644
--- a/frontend/src/pages/xray/XrayPage.vue
+++ b/frontend/src/pages/xray/XrayPage.vue
@@ -44,6 +44,7 @@ const {
   resetOutboundsTraffic,
   testOutbound,
   saveAll,
+  resetToDefault,
   restartXray,
 } = useXraySetting();
 
@@ -211,6 +212,7 @@ function confirmRestart() {
                         @update:outbound-test-url="(v) => (outboundTestUrl = v)"
                         @show-warp="showWarp"
                         @show-nord="showNord"
+                        @reset-default="resetToDefault"
                       />
                     </a-tab-pane>
 
diff --git a/frontend/src/pages/xray/useXraySetting.js b/frontend/src/pages/xray/useXraySetting.js
index 69560ba7..bf27e6c4 100644
--- a/frontend/src/pages/xray/useXraySetting.js
+++ b/frontend/src/pages/xray/useXraySetting.js
@@ -159,6 +159,20 @@ export function useXraySetting() {
     return null;
   }
 
+  async function resetToDefault() {
+    spinning.value = true;
+    try {
+      const msg = await HttpUtil.get('/panel/setting/getDefaultJsonConfig');
+      if (msg?.success) {
+        // Mutate templateSettings — the watch above re-stringifies into
+        // xraySetting so the Advanced JSON tab and dirty-poll see it.
+        templateSettings.value = JSON.parse(JSON.stringify(msg.obj));
+      }
+    } finally {
+      spinning.value = false;
+    }
+  }
+
   async function restartXray() {
     spinning.value = true;
     try {
@@ -218,6 +232,7 @@ export function useXraySetting() {
     resetOutboundsTraffic,
     testOutbound,
     saveAll,
+    resetToDefault,
     restartXray,
   };
 }