diff --git a/config.py b/config.py
index b8cd805..31a001d 100644
--- a/config.py
+++ b/config.py
@@ -320,7 +320,7 @@ YOUTUBE_API_KEY = os.getenv('YOUTUBE_API_KEY', '')
 # ==========================================
 # 系統版本與路徑
 # ==========================================
-SYSTEM_VERSION = "V10.134"
+SYSTEM_VERSION = "V10.135"
 LOG_FILE_PATH = os.path.join(BASE_DIR, 'logs/system.log')
 public_url = PUBLIC_URL  # 用於模板顯示
 
diff --git a/static/css/observability-system.css b/static/css/observability-system.css
index fac4482..58addfe 100644
--- a/static/css/observability-system.css
+++ b/static/css/observability-system.css
@@ -2545,6 +2545,95 @@
   background-size: var(--obs-matrix-size) !important;
 }
 
+/* v3.12 responsive data surfaces: observability tables should read like
+ * operational records on phones, not desktop sheets squeezed into a viewport.
+ */
+.momo-observability-mode .table-responsive {
+  overflow-x: visible !important;
+}
+
+.momo-observability-mode .table-responsive .table {
+  min-width: 0 !important;
+  width: 100% !important;
+  table-layout: auto;
+}
+
+.momo-observability-mode .table :is(th, td) {
+  max-width: min(24rem, 38vw);
+  white-space: normal !important;
+}
+
+@media (max-width: 768px) {
+  .momo-observability-mode .table-responsive {
+    max-height: none !important;
+    overflow: visible !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready,
+  .momo-observability-mode .table-responsive .obs-card-ready thead,
+  .momo-observability-mode .table-responsive .obs-card-ready tbody,
+  .momo-observability-mode .table-responsive .obs-card-ready tr,
+  .momo-observability-mode .table-responsive .obs-card-ready td {
+    display: block;
+    width: 100% !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready thead {
+    position: absolute;
+    width: 1px !important;
+    height: 1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready tbody {
+    display: grid;
+    gap: 0.7rem;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready tr {
+    display: grid;
+    gap: 0.44rem;
+    padding: 0.72rem;
+    border: 1px solid var(--obs-line);
+    border-radius: var(--momo-radius-lg, 8px);
+    background:
+      var(--obs-matrix-dot-soft),
+      var(--momo-bg-elevated, #fdfaf3);
+    background-size: var(--obs-matrix-size), auto;
+    box-shadow: var(--momo-shadow-sm, 0 1px 3px rgba(42, 37, 32, 0.05));
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td {
+    display: grid;
+    grid-template-columns: minmax(5.4rem, 35%) minmax(0, 1fr);
+    gap: 0.58rem;
+    align-items: start;
+    max-width: 100%;
+    padding: 0 !important;
+    border: 0 !important;
+    border-radius: 0 !important;
+    background: transparent !important;
+    box-shadow: none !important;
+    text-align: left !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td::before {
+    content: attr(data-label);
+    color: var(--obs-muted);
+    font-family: var(--momo-font-mono, "JetBrains Mono", ui-monospace, monospace);
+    font-size: 0.72rem;
+    font-weight: 700;
+    line-height: 1.45;
+    overflow-wrap: anywhere;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td:empty {
+    display: none;
+  }
+}
+
 .momo-observability-mode :is(
   .obs-panel,
   .agent-panel,
diff --git a/templates/ewoooc_base.html b/templates/ewoooc_base.html
index e435d0b..3b6498d 100644
--- a/templates/ewoooc_base.html
+++ b/templates/ewoooc_base.html
@@ -528,6 +528,14 @@
     })();
     </script>
 
+    {% if active_page|default('') in [
+        'obs_overview', 'obs_agent_orchestration', 'obs_business_intel',
+        'obs_host_health', 'obs_ai_calls', 'obs_budget',
+        'obs_promotion_review', 'obs_rag_queries', 'obs_quality_trend',
+        'obs_ppt_audit'
+    ] %}
+    <script src="{{ url_for('static', filename='js/observability-system.js') }}"></script>
+    {% endif %}
     {% block extra_js %}{% endblock %}
     {% block extra_scripts %}{% endblock %}
 </body>
diff --git a/web/static/css/observability-system.css b/web/static/css/observability-system.css
index fac4482..58addfe 100644
--- a/web/static/css/observability-system.css
+++ b/web/static/css/observability-system.css
@@ -2545,6 +2545,95 @@
   background-size: var(--obs-matrix-size) !important;
 }
 
+/* v3.12 responsive data surfaces: observability tables should read like
+ * operational records on phones, not desktop sheets squeezed into a viewport.
+ */
+.momo-observability-mode .table-responsive {
+  overflow-x: visible !important;
+}
+
+.momo-observability-mode .table-responsive .table {
+  min-width: 0 !important;
+  width: 100% !important;
+  table-layout: auto;
+}
+
+.momo-observability-mode .table :is(th, td) {
+  max-width: min(24rem, 38vw);
+  white-space: normal !important;
+}
+
+@media (max-width: 768px) {
+  .momo-observability-mode .table-responsive {
+    max-height: none !important;
+    overflow: visible !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready,
+  .momo-observability-mode .table-responsive .obs-card-ready thead,
+  .momo-observability-mode .table-responsive .obs-card-ready tbody,
+  .momo-observability-mode .table-responsive .obs-card-ready tr,
+  .momo-observability-mode .table-responsive .obs-card-ready td {
+    display: block;
+    width: 100% !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready thead {
+    position: absolute;
+    width: 1px !important;
+    height: 1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready tbody {
+    display: grid;
+    gap: 0.7rem;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready tr {
+    display: grid;
+    gap: 0.44rem;
+    padding: 0.72rem;
+    border: 1px solid var(--obs-line);
+    border-radius: var(--momo-radius-lg, 8px);
+    background:
+      var(--obs-matrix-dot-soft),
+      var(--momo-bg-elevated, #fdfaf3);
+    background-size: var(--obs-matrix-size), auto;
+    box-shadow: var(--momo-shadow-sm, 0 1px 3px rgba(42, 37, 32, 0.05));
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td {
+    display: grid;
+    grid-template-columns: minmax(5.4rem, 35%) minmax(0, 1fr);
+    gap: 0.58rem;
+    align-items: start;
+    max-width: 100%;
+    padding: 0 !important;
+    border: 0 !important;
+    border-radius: 0 !important;
+    background: transparent !important;
+    box-shadow: none !important;
+    text-align: left !important;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td::before {
+    content: attr(data-label);
+    color: var(--obs-muted);
+    font-family: var(--momo-font-mono, "JetBrains Mono", ui-monospace, monospace);
+    font-size: 0.72rem;
+    font-weight: 700;
+    line-height: 1.45;
+    overflow-wrap: anywhere;
+  }
+
+  .momo-observability-mode .table-responsive .obs-card-ready td:empty {
+    display: none;
+  }
+}
+
 .momo-observability-mode :is(
   .obs-panel,
   .agent-panel,
diff --git a/web/static/js/observability-system.js b/web/static/js/observability-system.js
new file mode 100644
index 0000000..f53c27d
--- /dev/null
+++ b/web/static/js/observability-system.js
@@ -0,0 +1,50 @@
+(function () {
+  'use strict';
+
+  function isObservabilityPage() {
+    return document.querySelector('.momo-observability-mode') !== null;
+  }
+
+  function normalizeLabel(text) {
+    return (text || '').replace(/\s+/g, ' ').trim();
+  }
+
+  function enhanceTable(table) {
+    if (!table || table.dataset.obsCardReady === '1') return;
+    const headers = Array.from(table.querySelectorAll('thead th')).map((th) => normalizeLabel(th.textContent));
+    if (!headers.length) return;
+
+    table.querySelectorAll('tbody tr').forEach((row) => {
+      Array.from(row.children).forEach((cell, index) => {
+        if (!cell.hasAttribute('data-label')) {
+          cell.setAttribute('data-label', headers[index] || '');
+        }
+      });
+    });
+
+    table.dataset.obsCardReady = '1';
+    table.classList.add('obs-card-ready');
+  }
+
+  function enhanceTables() {
+    if (!isObservabilityPage()) return;
+    document.querySelectorAll('.table-responsive table').forEach(enhanceTable);
+  }
+
+  document.addEventListener('DOMContentLoaded', enhanceTables);
+
+  let queued = false;
+  const observer = new MutationObserver(() => {
+    if (queued) return;
+    queued = true;
+    window.requestAnimationFrame(() => {
+      queued = false;
+      enhanceTables();
+    });
+  });
+
+  document.addEventListener('DOMContentLoaded', () => {
+    if (!isObservabilityPage()) return;
+    observer.observe(document.body, { childList: true, subtree: true });
+  });
+})();