diff --git a/src/views/reviewer/ReviewerApplicationDetailView.vue b/src/views/reviewer/ReviewerApplicationDetailView.vue
index d7cbdc0..cbfed28 100644
--- a/src/views/reviewer/ReviewerApplicationDetailView.vue
+++ b/src/views/reviewer/ReviewerApplicationDetailView.vue
@@ -134,23 +134,15 @@ function totalDraftText(): string {
 const SCORE_MAX = 100
 const SCORE_DECIMALS = 2
 
-/** 文本输入绑定：仅 0～100，最多两位小数 */
+/** 文本输入绑定：保留用户输入以便校验提示，不做自动改写 */
 const totalDraftModel = computed({
   get: () => totalDraft.value,
   set: (v: string | number | null | undefined) => {
     const raw = v == null ? '' : String(v)
-    let cleaned = raw.replace(/[^\d.]/g, '').replace(/(\..*)\./g, '$1')
-    const m = cleaned.match(/^(\d*)(\.\d{0,2})?/)
-    cleaned = m ? `${m[1] ?? ''}${m[2] ?? ''}` : ''
-    if (cleaned === '' || cleaned === '.') {
-      totalDraft.value = cleaned === '.' ? '0.' : ''
-      return
-    }
-    const n = Number(cleaned)
-    if (Number.isFinite(n) && n > SCORE_MAX) {
-      totalDraft.value = String(SCORE_MAX)
-      return
-    }
+    // 仅过滤非法字符；允许负号、大于 100、超过两位小数，由校验提示拦截
+    let cleaned = raw.replace(/[^\d.-]/g, '')
+    cleaned = cleaned.replace(/(?!^)-/g, '')
+    cleaned = cleaned.replace(/(\..*)\./g, '$1')
     totalDraft.value = cleaned
   },
 })
@@ -231,30 +223,22 @@ function getTotalError(): string | null {
     if (scoreShowErrors.value || totalBlurred.value) return '请填写项目总分'
     return null
   }
-  if (hasMoreThanTwoDecimals(raw)) return '最多保留两位小数'
+  if (raw === '-' || raw === '.' || raw === '-.') return '须为数字'
+  if (hasMoreThanTwoDecimals(raw)) return '项目总分最多保留两位小数'
   const n = Number(raw)
   if (!Number.isFinite(n)) return '须为数字'
-  if (n < 0) return '不能小于 0'
-  if (n > SCORE_MAX) return '不得超过 100 分'
+  if (n < 0) return '项目总分不能为负数'
+  if (n > SCORE_MAX) return '项目总分不能大于 100'
   return null
 }
 
 function onTotalBlur(): void {
   totalBlurred.value = true
-  const raw = totalDraftText()
-  if (raw === '' || raw.endsWith('.')) return
-  const n = Number(raw)
-  if (!Number.isFinite(n)) return
-  const clamped = Math.min(SCORE_MAX, Math.max(0, n))
-  totalDraft.value = rtrimZeros(clamped.toFixed(SCORE_DECIMALS))
 }
 
 const canSubmitScore = computed(() => {
   if (!detail.value?.scoring_allowed || !scoringItems.value.length) return false
-  const raw = totalDraftText()
-  if (raw === '' || hasMoreThanTwoDecimals(raw)) return false
-  const n = Number(raw)
-  return Number.isFinite(n) && n >= 0 && n <= SCORE_MAX
+  return getTotalError() === null && totalDraftText() !== ''
 })
 
 const scoreFormHint = computed(() => {
@@ -387,9 +371,9 @@ async function downloadAttachment(f: FileItem) {
 }
 
 function buildSubmitPayload(): Record<string, unknown> {
+  // 仅在 canSubmitScore 通过后调用；不做四舍五入/截断，原样提交校验过的数值
   const n = Number(totalDraftText())
-  const score = Number.isFinite(n) ? Math.round(n * 100) / 100 : 0
-  return { line_total: score }
+  return { line_total: n }
 }
 
 function cleanupModalArtifacts(): void {