diff --git a/lib/common/static/options_settings.js b/lib/common/static/options_settings.js
index 41a3957..25aabf9 100644
--- a/lib/common/static/options_settings.js
+++ b/lib/common/static/options_settings.js
@@ -42,9 +42,13 @@
     return window.confirm(message);
   }
 
-  function roundAvail(v) {
+  function roundAvail(v, ccy) {
     const n = Number(v);
     if (!Number.isFinite(n) || n <= 0) return null;
+    const u = String(ccy || "").toUpperCase();
+    if (u === "ETH" || u === "BTC") {
+      return Math.round(n * 1e8) / 1e8;
+    }
     return Math.round(n * 100) / 100;
   }
 
@@ -63,7 +67,7 @@
     const c = String(ccy || "").toLowerCase();
     const availKey = acct + "_" + c + "_avail";
     const totalKey = acct + "_" + c;
-    return roundAvail(bal[availKey] != null ? bal[availKey] : bal[totalKey]);
+    return roundAvail(bal[availKey] != null ? bal[availKey] : bal[totalKey], ccy);
   }
 
   async function resolveSwapMaxAmount(dir) {
@@ -130,10 +134,11 @@
 
   function bindFundsUi(ids) {
     const swapBtn = document.getElementById(ids.swapBtn);
-    if (!swapBtn) return;
+    const intBtn = document.getElementById(ids.intBtn);
+    if (!swapBtn && !intBtn) return;
 
-    const swapBtns = [ids.swapBtn, ids.swapAllBtn];
-    const intBtns = [ids.intBtn, ids.intAllBtn];
+    const swapBtns = [ids.swapBtn, ids.swapAllBtn].filter(Boolean);
+    const intBtns = [ids.intBtn, ids.intAllBtn].filter(Boolean);
 
     async function submitSwap(amount) {
       setButtonsBusy(swapBtns, ids.swapAmount, true, "兑换中…");
@@ -191,14 +196,16 @@
       }
     }
 
-    swapBtn.addEventListener("click", async function () {
-      const amount = parseFloat(document.getElementById(ids.swapAmount).value);
-      if (!amount || amount <= 0) {
-        setMsg(ids.swapMsg, "请输入有效数量", true);
-        return;
-      }
-      await submitSwap(amount);
-    });
+    if (swapBtn) {
+      swapBtn.addEventListener("click", async function () {
+        const amount = parseFloat(document.getElementById(ids.swapAmount).value);
+        if (!amount || amount <= 0) {
+          setMsg(ids.swapMsg, "请输入有效数量", true);
+          return;
+        }
+        await submitSwap(amount);
+      });
+    }
 
     const swapAllBtn = document.getElementById(ids.swapAllBtn);
     if (swapAllBtn) {
@@ -247,7 +254,6 @@
       });
     }
 
-    const intBtn = document.getElementById(ids.intBtn);
     if (intBtn) {
       intBtn.addEventListener("click", async function () {
         const amount = parseFloat(document.getElementById(ids.intAmount).value);
diff --git a/lib/instance/instance_settings_lib.py b/lib/instance/instance_settings_lib.py
index 7fed9cb..694906a 100644
--- a/lib/instance/instance_settings_lib.py
+++ b/lib/instance/instance_settings_lib.py
@@ -132,7 +132,15 @@ def build_settings_tabs(display: dict[str, Any] | None, instance_settings: dict[
     if disp.get("show_settings_export", True):
         tabs.append({"key": "export", "title": "数据导出"})
     if inst.get("options_settings_enabled") and disp.get("show_settings_options_swap", True):
-        tabs.append({"key": "options_swap", "title": "币种兑换"})
+        _coin = False
+        try:
+            from lib.options.options_margin_mode_lib import is_coin_margin_mode
+
+            _coin = bool(is_coin_margin_mode())
+        except Exception:
+            _coin = False
+        if not _coin:
+            tabs.append({"key": "options_swap", "title": "币种兑换"})
     if inst.get("options_settings_enabled") and disp.get("show_settings_options_transfer", True):
         tabs.append({"key": "options_transfer", "title": "期权划转"})
     return tabs
diff --git a/lib/options/templates/options_page_funds.html b/lib/options/templates/options_page_funds.html
index 03376a5..2f703ae 100644
--- a/lib/options/templates/options_page_funds.html
+++ b/lib/options/templates/options_page_funds.html
@@ -1,8 +1,11 @@
-{# 期权页·持仓卡内:兑换 + 划转(默认折叠;独立 ID 避免与系统设置冲突) #}
-<details class="opt-close-rule options-funds-fold" id="options-funds-card">
-    <summary>兑换 / 划转</summary>
+{# 期权页·持仓卡内:划转(+ USDC 模式下的兑换);默认折叠 #}
+{% set _mm = (options_margin_mode|default('coin'))|string|lower %}
+{% set _coin = (_mm == 'coin') %}
+<details class="opt-close-rule options-funds-fold" id="options-funds-card"{% if _coin %} data-margin-mode="coin"{% else %} data-margin-mode="usdc"{% endif %}>
+    <summary>{% if _coin %}划转{% else %}兑换 / 划转{% endif %}</summary>
     <div class="opt-close-rule-body options-funds-fold-body">
-        <div class="options-settings-section">
+        {% if not _coin %}
+        <div class="options-settings-section" id="options-funds-swap-section">
             <p class="options-settings-hint">账户资金账户:USDT ↔ USDC 现货市价单.</p>
             <div class="form-row settings-transfer-form options-settings-row">
                 <input type="text" name="username" autocomplete="username" tabindex="-1" aria-hidden="true"
@@ -18,14 +21,21 @@
             </div>
             <div id="opt-page-swap-msg" class="options-settings-msg muted"></div>
         </div>
+        {% endif %}
         <div class="options-settings-section">
             <div class="options-settings-subtitle">账户内划转</div>
             <div class="form-row settings-transfer-form options-settings-row options-funds-row--single">
                 <input type="text" name="username" autocomplete="username" tabindex="-1" aria-hidden="true"
                        style="position:absolute;left:-9999px;width:1px;height:1px;opacity:0" value="">
                 <select id="opt-page-int-ccy" aria-label="币种" autocomplete="off">
+                    {% if _coin %}
+                    <option value="USDT" selected>USDT</option>
+                    <option value="ETH">ETH</option>
+                    <option value="BTC">BTC</option>
+                    {% else %}
                     <option value="USDC" selected>USDC</option>
                     <option value="USDT">USDT</option>
+                    {% endif %}
                 </select>
                 <select id="opt-page-int-from" aria-label="划出账户">
                     <option value="funding" selected>from: 资金</option>
diff --git a/lib/options/templates/options_settings_panel.html b/lib/options/templates/options_settings_panel.html
index 1a67e5d..c352b54 100644
--- a/lib/options/templates/options_settings_panel.html
+++ b/lib/options/templates/options_settings_panel.html
@@ -1,3 +1,3 @@
 {# 期权设置脚本挂载点(卡片在 settings_panel 中拆分) #}
 <div id="options-settings-root" hidden></div>
-<script src="/static/options_settings.js?v=11"></script>
+<script src="/static/options_settings.js?v=12"></script>
diff --git a/lib/options/templates/options_settings_transfer.html b/lib/options/templates/options_settings_transfer.html
index 48d6990..a5a17b8 100644
--- a/lib/options/templates/options_settings_transfer.html
+++ b/lib/options/templates/options_settings_transfer.html
@@ -4,8 +4,15 @@
         <input type="text" name="username" autocomplete="username" tabindex="-1" aria-hidden="true"
                style="position:absolute;left:-9999px;width:1px;height:1px;opacity:0" value="">
         <select id="opt-set-int-ccy" aria-label="币种" autocomplete="off">
+            {% set _mm = (options_margin_mode|default('coin'))|string|lower %}
+            {% if _mm == 'coin' %}
+            <option value="USDT" selected>USDT</option>
+            <option value="ETH">ETH</option>
+            <option value="BTC">BTC</option>
+            {% else %}
             <option value="USDC" selected>USDC</option>
             <option value="USDT">USDT</option>
+            {% endif %}
         </select>
         <select id="opt-set-int-from" aria-label="划出账户">
             <option value="funding" selected>from: 资金</option>