diff --git a/web/strategy-switch-console/index.html b/web/strategy-switch-console/index.html
index 5896c1e..45643ff 100644
--- a/web/strategy-switch-console/index.html
+++ b/web/strategy-switch-console/index.html
@@ -1164,15 +1164,87 @@
       background: transparent;
     }
 
-    @media (max-width: 820px) {
+    /* ── Responsive breakpoints (descending max-width) ── */
+    /* L: 900-1199px — moderate spacing compression, execution cash policy → 1-col */
+    @media (max-width: 1199px) {
+      .topbar {
+        width: min(100% - 20px, 1400px);
+        padding: 16px 20px;
+        min-height: 78px;
+      }
+
+      .shell {
+        width: min(100% - 28px, 1400px);
+        gap: 14px;
+      }
+
+      .switch-surface {
+        grid-template-columns: minmax(0, 1.3fr) minmax(340px, 0.9fr);
+        gap: 14px;
+      }
+
+      .switch-panel {
+        padding: 22px;
+      }
+
+      .panel-head h2 {
+        font-size: clamp(27px, 3vw, 38px);
+      }
+
+      .execution-cash-policy-grid {
+        grid-template-columns: 1fr;
+      }
+
+      .public-preview {
+        grid-template-columns: repeat(2, minmax(0, 1fr));
+      }
+    }
+
+    /* M: 680-899px — single-column main layout, form sections → 1-col, platform strip → 3-col */
+    @media (max-width: 899px) {
+      .topbar {
+        border-radius: 0;
+        margin: 0;
+        top: 0;
+        width: 100%;
+        min-height: 68px;
+        padding: 14px 18px;
+      }
+
+      .brand {
+        column-gap: 10px;
+        grid-template-columns: 38px minmax(0, 1fr);
+      }
+
+      .brand::before {
+        width: 38px;
+        height: 38px;
+        font-size: 19px;
+      }
+
+      h1 {
+        font-size: clamp(19px, 2.5vw, 26px);
+      }
+
+      .brand p {
+        font-size: 12px;
+      }
+
+      .shell {
+        width: min(100% - 24px, 1400px);
+        padding: 10px 0 32px;
+        gap: 12px;
+      }
+
       .platform-strip {
         grid-template-columns: repeat(3, minmax(0, 1fr));
         gap: 6px;
         padding: 8px 10px;
       }
 
-      .platform-copy strong {
-        font-size: 12px;
+      .platform-button {
+        min-height: 48px;
+        padding: 8px 24px 8px 8px;
       }
 
       .switch-surface {
@@ -1183,39 +1255,51 @@
         position: static;
       }
 
-      .public-preview {
+      .quick-form {
         grid-template-columns: 1fr;
       }
-    }
 
+      .form-section {
+        grid-template-columns: 1fr;
+      }
 
-    @media (max-width: 540px) {
-      .platform-strip {
-        grid-template-columns: repeat(2, minmax(0, 1fr));
-        gap: 5px;
-        padding: 6px 8px;
+      .public-preview {
+        grid-template-columns: 1fr;
       }
-      .platform-button {
-        min-height: 40px;
-        gap: 5px;
-        padding: 5px 7px;
+
+      .switch-panel {
+        padding: 20px;
+        gap: 16px;
       }
-      .mark {
-        width: 26px;
-        height: 26px;
-        font-size: 10px;
+
+      .panel-head h2 {
+        font-size: clamp(24px, 4vw, 32px);
       }
-      .platform-copy strong {
-        font-size: 11px;
+
+      .summary-row {
+        grid-template-columns: 1fr;
+        gap: 3px;
+        padding: 10px 0;
+      }
+
+      .mode-block,
+      .section-wide {
+        grid-column: auto;
       }
     }
 
-    @media (max-width: 680px) {
+    /* S: 480-679px — topbar stacks vertically, platform strip → 2-col, tighter spacing */
+    @media (max-width: 679px) {
       .topbar {
         position: static;
-        align-items: flex-start;
         flex-direction: column;
-        padding: 18px;
+        align-items: flex-start;
+        gap: 12px;
+        padding: 14px 16px;
+      }
+
+      .brand {
+        width: 100%;
       }
 
       .top-actions {
@@ -1223,60 +1307,265 @@
         width: 100%;
       }
 
+      .btn,
+      .pill {
+        min-height: 36px;
+        font-size: 12px;
+      }
+
       .boot-screen {
-        width: min(100% - 28px, 680px);
-        min-height: calc(100svh - 122px);
-        padding-top: 22px;
+        width: min(100% - 24px, 680px);
+        min-height: calc(100svh - 130px);
+        padding: 20px 0;
       }
 
-      .shell {
-        width: min(100% - 28px, 1160px);
-        padding-top: 18px;
+      .boot-panel h2 {
+        font-size: clamp(24px, 6vw, 34px);
       }
 
-      .platform-strip,
-      .quick-form,
-      .form-section {
-        grid-template-columns: 1fr;
+      .shell {
+        width: min(100% - 20px, 1160px);
+        padding-top: 14px;
+        gap: 10px;
       }
 
       .platform-strip {
-        grid-template-columns: repeat(5, minmax(68px, 1fr));
+        grid-template-columns: repeat(2, minmax(0, 1fr));
         gap: 6px;
         padding: 8px;
-        overflow-x: auto;
       }
 
       .platform-button {
-        min-height: 48px;
-        padding-inline: 8px 24px;
+        min-height: 44px;
       }
 
       .platform-copy strong {
-        font-size: 11px;
+        font-size: 12px;
       }
 
-      .mode-block,
-      .section-wide {
-        grid-column: auto;
+      .mark {
+        width: 28px;
+        height: 28px;
+        font-size: 10px;
+        border-radius: 8px;
       }
 
       .switch-panel {
-        padding: 18px;
+        padding: 16px;
+        gap: 14px;
       }
 
-      .summary-row {
-        grid-template-columns: 1fr;
-        gap: 3px;
+      .summary-head {
+        padding: 16px 18px 14px;
       }
 
-      .run-area {
-        grid-template-columns: 1fr;
+      .summary-list {
+        padding: 4px 18px 14px;
+      }
+
+      .summary-actions {
+        padding: 14px 18px 18px;
+      }
+
+      .summary-row.pending {
+        margin: 0 -18px;
+        padding-inline: 15px 18px;
+      }
+
+      select,
+      input {
+        font-size: 13px;
+      }
+    }
+
+    /* XS: < 480px — hide subtitle, compact platform buttons, minimal chrome */
+    @media (max-width: 479px) {
+      .topbar {
+        padding: 12px 14px;
+      }
+
+      .brand p {
+        display: none;
+      }
+
+      .brand::before {
+        width: 34px;
+        height: 34px;
+        font-size: 17px;
+      }
+
+      .brand {
+        grid-template-columns: 34px minmax(0, 1fr);
+        column-gap: 8px;
+      }
+
+      h1 {
+        font-size: 19px;
       }
 
-      select {
+      .btn,
+      .pill {
+        min-height: 34px;
+        padding: 0 10px;
+        border-radius: 10px;
+        font-size: 12px;
+      }
+
+      .boot-panel h2 {
+        font-size: clamp(22px, 7vw, 28px);
+      }
+
+      .boot-panel p {
         font-size: 13px;
       }
+
+      .shell {
+        width: min(100% - 16px, 1160px);
+        padding-top: 10px;
+        gap: 8px;
+      }
+
+      .platform-strip {
+        gap: 5px;
+        padding: 6px;
+      }
+
+      .platform-button {
+        min-height: 40px;
+        gap: 6px;
+        padding: 6px 22px 6px 6px;
+      }
+
+      .platform-button.active::after {
+        right: 5px;
+        width: 16px;
+        height: 16px;
+        font-size: 10px;
+      }
+
+      .mark {
+        width: 26px;
+        height: 26px;
+        font-size: 9px;
+        border-radius: 7px;
+      }
+
+      .platform-copy strong {
+        font-size: 11px;
+      }
+
+      .switch-panel {
+        padding: 14px;
+        gap: 12px;
+      }
+
+      .panel-head h2 {
+        font-size: clamp(21px, 6vw, 26px);
+      }
+
+      .quick-form {
+        gap: 10px;
+      }
+
+      .form-section {
+        padding: 12px;
+        gap: 10px;
+      }
+
+      select,
+      input {
+        height: 42px;
+        min-height: 42px;
+        font-size: 12px;
+        padding: 0 10px;
+        padding-right: 36px;
+      }
+
+      .mode {
+        height: 42px;
+        min-height: 42px;
+      }
+
+      .mode button {
+        font-size: 12px;
+        border-radius: 7px;
+      }
+
+      .control-block {
+        grid-template-rows: auto 42px minmax(16px, auto);
+        gap: 6px;
+      }
+
+      .run-button {
+        min-height: 50px;
+        font-size: 15px;
+      }
+
+      .summary-head {
+        padding: 14px 14px 12px;
+      }
+
+      .summary-head h2 {
+        font-size: 18px;
+      }
+
+      .summary-list {
+        padding: 2px 14px 12px;
+      }
+
+      .summary-actions {
+        padding: 12px 14px 14px;
+      }
+
+      .summary-row.pending {
+        margin: 0 -14px;
+        padding-inline: 11px 14px;
+      }
+    }
+
+    /* XXS: < 375px — safety net for tiny screens */
+    @media (max-width: 374px) {
+      body {
+        word-break: break-word;
+      }
+
+      .topbar {
+        padding: 10px 10px;
+      }
+
+      h1 {
+        font-size: 17px;
+      }
+
+      .brand::before {
+        width: 30px;
+        height: 30px;
+        font-size: 15px;
+      }
+
+      .brand {
+        grid-template-columns: 30px minmax(0, 1fr);
+        column-gap: 6px;
+      }
+
+      .shell {
+        width: min(100% - 12px, 1160px);
+      }
+
+      .platform-strip {
+        grid-template-columns: repeat(2, minmax(0, 1fr));
+        gap: 4px;
+        padding: 4px;
+      }
+
+      .platform-button {
+        min-height: 38px;
+        padding: 4px 18px 4px 4px;
+      }
+
+      .switch-panel {
+        padding: 10px;
+      }
     }
 
     @media (prefers-reduced-motion: no-preference) {