diff --git a/src/styles/apply-form-prototype.css b/src/styles/apply-form-prototype.css
index c64c9c4..8eae95c 100644
--- a/src/styles/apply-form-prototype.css
+++ b/src/styles/apply-form-prototype.css
@@ -105,6 +105,26 @@ body.prototype-page .apply-form-scroll > .card > .card-body {
   filter: none !important;
 }
 
+/**
+ * 承诺书弹窗「关闭」与保存弹窗「取消」同款（notice-cancel-btn）。
+ * 写在本表并加 #promiseSignModal 限定，避免首访时仅命中裸 .btn 出现「无底色无边框」直至二次刷新。
+ */
+body.prototype-page #promiseSignModal .notice-cancel-btn {
+  min-width: 72px !important;
+  background: #e3e5e9 !important;
+  border: 1px solid #d2d6dc !important;
+  color: #2f3136 !important;
+  font-weight: 500 !important;
+}
+
+body.prototype-page #promiseSignModal .notice-cancel-btn:hover:not(:disabled),
+body.prototype-page #promiseSignModal .notice-cancel-btn:focus:not(:disabled),
+body.prototype-page #promiseSignModal .notice-cancel-btn:active:not(:disabled) {
+  background: #d4d9e0 !important;
+  border-color: #c4cad3 !important;
+  color: #2a2d33 !important;
+}
+
 .participant-layout #applyForm .btn-outline-primary {
   color: #052d62 !important;
   border-color: rgba(7, 59, 116, 0.55) !important;
diff --git a/src/styles/login-page-overrides.css b/src/styles/login-page-overrides.css
index 1c4aee1..8d6553d 100644
--- a/src/styles/login-page-overrides.css
+++ b/src/styles/login-page-overrides.css
@@ -55,14 +55,13 @@ body.login-page-wls .login-page-wls__hint--error {
   color: #052d62;
 }
 
-/** 调试「本次验证码」等成功提示：与选手端浅蓝主题一致 */
+/** 「本次验证码」等成功提示：仅保留主题字色，无底色与描边 */
 body.login-page-wls .login-page-wls__hint--success {
   color: #052d62 !important;
-  background: #eef7fc !important;
-  border: 1px solid rgba(5, 45, 98, 0.14) !important;
-  border-radius: 8px !important;
-  padding: 0.5rem 0.75rem !important;
-  margin-top: 0.75rem !important;
+  background: none !important;
+  border: none !important;
+  border-radius: 0 !important;
+  padding: 0 !important;
   box-sizing: border-box;
 }
 
diff --git a/src/views/ApplyFormView.vue b/src/views/ApplyFormView.vue
index d2b6cad..6ed7979 100644
--- a/src/views/ApplyFormView.vue
+++ b/src/views/ApplyFormView.vue
@@ -307,6 +307,12 @@ function fileItemDisplayName(item: FileItem) {
   return item.file ? item.file.name : item.original_name || ''
 }
 
+/** 预览/下载链上建议保存名（与展示名一致）；同源时部分浏览器会采用 */
+function fileItemSuggestedDownloadName(item: FileItem): string | undefined {
+  const n = fileItemDisplayName(item).trim()
+  return n || undefined
+}
+
 function formatApiErrSafe(data: Record<string, unknown>) {
   const msg = (data.message as string) || ''
   const errObj = data.errors as Record<string, string[]> | undefined
@@ -1128,6 +1134,7 @@ onMounted(() => {
                     <a
                       class="btn btn-sm btn-outline-primary"
                       :href="item.previewUrl || item.url || '#'"
+                      :download="fileItemSuggestedDownloadName(item)"
                       target="_blank"
                       rel="noopener"
                       >预览</a
@@ -1182,6 +1189,7 @@ onMounted(() => {
                     <a
                       class="btn btn-sm btn-outline-primary"
                       :href="item.previewUrl || item.url || '#'"
+                      :download="fileItemSuggestedDownloadName(item)"
                       target="_blank"
                       rel="noopener"
                       >预览</a
@@ -1421,7 +1429,7 @@ onMounted(() => {
                 </div>
               </div>
               <div class="promise-sign-actions">
-                <button type="button" class="btn promise-close-btn" data-bs-dismiss="modal">关闭</button>
+                <button type="button" class="btn btn-light notice-cancel-btn" data-bs-dismiss="modal">关闭</button>
                 <button type="button" class="btn btn-primary" @click="confirmPromiseSignature">确认签署</button>
               </div>
             </div>
diff --git a/src/views/reviewer/ReviewerApplicationDetailView.vue b/src/views/reviewer/ReviewerApplicationDetailView.vue
index 0162b38..6235420 100644
--- a/src/views/reviewer/ReviewerApplicationDetailView.vue
+++ b/src/views/reviewer/ReviewerApplicationDetailView.vue
@@ -515,7 +515,7 @@ async function submitReviewScore() {
               </template>
             </div>
             <div class="promise-sign-actions">
-              <button type="button" class="btn promise-close-btn" data-bs-dismiss="modal">关闭</button>
+              <button type="button" class="btn btn-light notice-cancel-btn" data-bs-dismiss="modal">关闭</button>
             </div>
           </div>
         </div>