更新提现说明，并补充积分兑换汇率提示。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/styles.css

@@ -175,6 +175,7 @@ input:focus { border-color: var(--gold); }
 .metric span { color: var(--muted); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; }
 .metric strong { display: block; margin-top: 12px; font-family: var(--serif); font-size: 40px; font-weight: 560; letter-spacing: -0.04em; }
 .metric em { display: block; margin-top: 8px; color: var(--muted); font-style: normal; font-size: 13px; }
+.metrics .fine { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
 .section-title { margin: 28px 0 14px; font-family: var(--serif); font-weight: 560; font-size: 28px; }
 .board { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-top: 16px; }
 .plate { padding: 18px; }

frontend/src/views/Dashboard.vue

@@ -97,6 +97,7 @@ onUnmounted(() => window.clearInterval(timer));
         <strong>{{ board.nodes.length }}</strong>
         <em>{{ board.nodes.filter((node) => node.status === "online").length }} 台在线</em>
       </article>
+      <p class="fine">* 算力积分兑换汇率：1 积分 = 0.8 ~ 1.0 USDT（根据全网算力动态浮动，当前基准约 0.95 USDT）</p>
     </section>
 
     <section class="board">
@@ -142,7 +143,7 @@ onUnmounted(() => window.clearInterval(timer));
       </form>
       <form class="panel" @submit.prevent="requestCash">
         <h2>申请提现</h2>
-        <p class="sub">提交后金额会被占用，等管理员打款。</p>
+        <p class="sub">提交申请后，相应资产将进入安全清算锁定状态，审核通过后将统一打款至您的绑定地址。</p>
         <label>金额<input v-model="cashForm.amount" required placeholder="1.25" /></label>
         <label>资产<input v-model="cashForm.asset_symbol" /></label>
         <button class="gold" type="submit">提交申请</button>