diff --git a/frontend/prototype/assets/prototype.css b/frontend/prototype/assets/prototype.css
index ecb7ccb..49f425d 100644
--- a/frontend/prototype/assets/prototype.css
+++ b/frontend/prototype/assets/prototype.css
@@ -1183,8 +1183,10 @@ a[target="_blank"]:focus {
   text-decoration: none;
 }
 
-/* 登录页：内部系统布局 + 元禾主色（:root --primary） */
+/* 登录页：浅蓝整体背景；按钮仍用 --login-page-wls-btn-surface */
 body.login-page-wls {
+  --login-page-wls-surface: linear-gradient(135deg, #f4f9fd 0%, #e8f3fa 38%, #eef7fc 100%);
+  --login-page-wls-btn-surface: radial-gradient(ellipse at 78% 22%, rgba(255, 211, 106, 0.14), transparent 42%), radial-gradient(ellipse at 24% 72%, rgba(255, 211, 106, 0.08), transparent 46%), radial-gradient(ellipse at 50% 50%, rgba(13, 84, 162, 0.24), transparent 58%), linear-gradient(128deg, #073b74 0%, #052d62 34%, #071f50 68%, #041433 100%);
   margin: 0;
   min-height: 100vh;
   min-height: 100dvh;
@@ -1192,7 +1194,8 @@ body.login-page-wls {
   flex-direction: column;
   font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
   color: #333;
-  background: linear-gradient(135deg, #fefcfc 0%, #fbe9eb 36%, #f7f5f6 88%);
+  background: var(--login-page-wls-surface);
+  background-color: #eef7fc;
   -webkit-font-smoothing: antialiased;
 }
 
@@ -1229,6 +1232,20 @@ body.login-page-wls *::after {
   max-width: 520px;
   padding: 0;
   text-align: left;
+  color: #222;
+}
+
+.login-page-wls__brand .login-page-wls__title,
+.login-page-wls__brand .login-page-wls__title-main,
+.login-page-wls__brand .login-page-wls__title-sub,
+.login-page-wls__brand .login-page-wls__mark-en {
+  color: inherit;
+}
+
+.login-page-wls__brand .login-page-wls__mark,
+.login-page-wls__brand .login-page-wls__mark-cn,
+.login-page-wls__brand .login-page-wls__slogan {
+  color: #6b6f76;
 }
 
 .login-page-wls__logo {
@@ -1353,8 +1370,8 @@ body.login-page-wls *::after {
 }
 
 .login-page-wls__input:focus {
-  border-color: var(--primary);
-  box-shadow: 0 0 0 3px rgba(180, 0, 16, 0.12);
+  border-color: #052d62;
+  box-shadow: 0 0 0 3px rgba(5, 45, 98, 0.22);
 }
 
 .login-page-wls__code-row {
@@ -1372,21 +1389,23 @@ body.login-page-wls *::after {
 .login-page-wls__code-btn {
   min-width: 6.3rem;
   padding: 0 0.7rem;
-  border: 1px solid #dfc4c7;
+  border: 1px solid rgba(255, 211, 106, 0.38);
   border-radius: 8px;
-  background: #fff7f8;
-  color: #9f0f1c;
+  background: var(--login-page-wls-btn-surface);
+  background-color: #052d62;
+  color: #fff;
   font-size: 0.82rem;
   font-weight: 500;
   text-shadow: none;
   -webkit-text-stroke: 0;
   cursor: pointer;
-  transition: all 0.15s ease;
+  transition: filter 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
 }
 
-.login-page-wls__code-btn:hover {
-  background: #feeef0;
-  border-color: #d9a6ac;
+.login-page-wls__code-btn:hover:not(:disabled) {
+  filter: brightness(1.12);
+  border-color: rgba(255, 244, 204, 0.55);
+  box-shadow: 0 0 0 1px rgba(143, 232, 255, 0.12);
 }
 
 .login-page-wls__code-btn:disabled {
@@ -1422,7 +1441,8 @@ body.login-page-wls *::after {
 }
 
 .login-page-wls__role-select:focus {
-  border-color: var(--primary);
+  border-color: #052d62;
+  box-shadow: 0 0 0 3px rgba(5, 45, 98, 0.18);
 }
 
 .login-page-wls__submit {
@@ -1432,17 +1452,19 @@ body.login-page-wls *::after {
   font-size: 1rem;
   font-weight: 600;
   color: #fff;
-  border: none;
+  border: 1px solid rgba(255, 211, 106, 0.38);
   border-radius: 8px;
   cursor: pointer;
-  background: linear-gradient(180deg, #cf2c3a 0%, #ba1424 55%, #a90a1a 100%);
-  box-shadow: 0 2px 8px rgba(180, 0, 16, 0.16);
-  transition: filter 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
+  background: var(--login-page-wls-btn-surface);
+  background-color: #052d62;
+  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.28);
+  transition: filter 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease, border-color 0.15s ease;
 }
 
 .login-page-wls__submit:hover {
-  filter: brightness(1.03);
-  box-shadow: 0 2px 10px rgba(180, 0, 16, 0.2);
+  filter: brightness(1.1);
+  border-color: rgba(255, 244, 204, 0.5);
+  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.32);
 }
 
 .login-page-wls__submit:active {
@@ -1482,7 +1504,8 @@ body.login-page-wls *::after {
 }
 
 .login-page-wls__form--invalid .login-page-wls__input:invalid {
-  border-color: #e57373;
+  border-color: #052d62;
+  box-shadow: 0 0 0 2px rgba(5, 45, 98, 0.2);
 }
 
 .login-page-wls__footer {
@@ -1493,7 +1516,7 @@ body.login-page-wls *::after {
 .login-page-wls__copyright {
   margin: 0;
   font-size: 0.75rem;
-  color: #aaa;
+  color: #8b8e94;
 }
 
 .notice-modal-dialog {
diff --git a/src/config/api.ts b/src/config/api.ts
index 63fbcbd..6e4bf80 100644
--- a/src/config/api.ts
+++ b/src/config/api.ts
@@ -76,6 +76,23 @@ export function getApiBase(): string {
   return ''
 }
 
+/** 规整附件公开 URL，避免 Laravel `APP_URL` 带尾斜杠时出现 `//storage/...` 导致 404 */
+export function normalizePublicAssetUrl(raw: string | null | undefined): string {
+  const s = String(raw ?? '').trim()
+  if (!s) return s
+  if (/^https?:\/\//i.test(s)) {
+    try {
+      const u = new URL(s)
+      const collapsed = u.pathname.replace(/\/{2,}/g, '/')
+      u.pathname = collapsed.startsWith('/') ? collapsed : `/${collapsed}`
+      return u.toString()
+    } catch {
+      return s.replace(/([^:])\/\/+/g, '$1/')
+    }
+  }
+  return s.replace(/\/{2,}/g, '/')
+}
+
 /** 评审端附件下载 URL（需请求头 `Authorization: Bearer`，见详情页 `downloadAttachment`） */
 export function reviewApplicationFileDownloadUrl(
   applicationId: number,
diff --git a/src/layouts/MainLayout.vue b/src/layouts/MainLayout.vue
index 1fd8bba..cf420de 100644
--- a/src/layouts/MainLayout.vue
+++ b/src/layouts/MainLayout.vue
@@ -65,20 +65,40 @@ watch(participantSlug, () => {
   void loadParticipantBranding()
 }, { immediate: true })
 
-/** 与登录页一致：把运营配置的主题色写回 body，避免离开登录页后 --primary 被清空导致首帧仍是 Bootstrap 默认绿 */
+/** branding 未配置时与首页/登录同款深蓝，避免子元素 var(--primary) 回退到原型 :root 洋红 */
+const PARTICIPANT_DEFAULT_PRIMARY = '#052d62'
+
+function primaryHexToRgbTriplet(hex: string): string | null {
+  const s = hex.trim().replace('#', '')
+  if (!/^[0-9a-f]{6}$/i.test(s)) return null
+  const r = parseInt(s.slice(0, 2), 16)
+  const g = parseInt(s.slice(2, 4), 16)
+  const b = parseInt(s.slice(4, 6), 16)
+  return `${r}, ${g}, ${b}`
+}
+
+/** 与登录页一致：把运营配置的主题色写回 body；无配置时用默认深蓝并同步 --bs-primary，避免首屏 Bootstrap 主按钮仍是默认色 */
 function applyParticipantBodyTheme() {
   if (typeof document === 'undefined') return
-  const theme = brand.value.login.themePrimary?.trim() ?? ''
-  if (hasVisibleText(theme)) {
-    document.body.style.setProperty('--primary', theme)
+  const custom = brand.value.login.themePrimary?.trim() ?? ''
+  const theme = hasVisibleText(custom)
+    ? /^(?:#|rgb|hsl)/i.test(custom)
+      ? custom
+      : `#${custom.replace(/^#/, '')}`
+    : PARTICIPANT_DEFAULT_PRIMARY
+  document.body.style.setProperty('--primary', theme)
+  document.body.style.setProperty('--bs-primary', theme)
+  if (theme.startsWith('#')) {
     document.body.style.setProperty('--primary-soft', `${theme}14`)
+    const rgb = primaryHexToRgbTriplet(theme)
+    if (rgb) document.body.style.setProperty('--bs-primary-rgb', rgb)
   } else {
-    document.body.style.removeProperty('--primary')
     document.body.style.removeProperty('--primary-soft')
+    document.body.style.removeProperty('--bs-primary-rgb')
   }
 }
 
-watch(brand, () => applyParticipantBodyTheme(), { deep: true })
+watch(brand, () => applyParticipantBodyTheme(), { deep: true, immediate: true })
 
 const profileLabel = ref('')
 
@@ -120,6 +140,8 @@ onUnmounted(() => {
   document.body.classList.remove('prototype-page', 'user-mobile-no-menu')
   document.body.style.removeProperty('--primary')
   document.body.style.removeProperty('--primary-soft')
+  document.body.style.removeProperty('--bs-primary')
+  document.body.style.removeProperty('--bs-primary-rgb')
 })
 </script>
 
@@ -190,10 +212,14 @@ onUnmounted(() => {
 
 <style scoped>
 :deep(a.router-link-active.nav-link) {
-  background: #f3e7e9;
-  color: #8f000c;
+  background: #eef7fc;
+  color: #052d62;
   font-weight: 600;
 }
+
+:deep(.layout-sider .nav-link:not(.router-link-active)) {
+  color: #3a4a5c;
+}
 </style>
 
 <style>
diff --git a/src/styles/apply-form-prototype.css b/src/styles/apply-form-prototype.css
index a913119..c64c9c4 100644
--- a/src/styles/apply-form-prototype.css
+++ b/src/styles/apply-form-prototype.css
@@ -19,6 +19,27 @@ body.login-page-wls #app {
   color: #1f1f1f !important;
 }
 
+/** 选手报名工作台（MainLayout）：页面底色与登录页浅蓝渐变一致 */
+body.prototype-page.user-mobile-no-menu {
+  background: linear-gradient(135deg, #f4f9fd 0%, #e8f3fa 38%, #eef7fc 100%) !important;
+  background-color: #eef7fc !important;
+}
+
+/** 左侧「赛事报名」导航卡与右侧报名表外框：白底、#eef7fc 描边、统一圆角 */
+body.prototype-page.user-mobile-no-menu .participant-layout .layout-sider > .card {
+  background: #fff !important;
+  border: 1px solid #eef7fc !important;
+  border-radius: var(--radius-lg, 10px) !important;
+}
+
+body.prototype-page .apply-form-page {
+  background: #fff !important;
+  border: 1px solid #eef7fc !important;
+  border-radius: var(--radius-lg, 10px) !important;
+  box-sizing: border-box;
+  padding: 1rem 1.25rem !important;
+}
+
 body.prototype-page .form-page-title {
   color: #262224 !important;
   font-size: 1.35rem !important;
@@ -26,24 +47,118 @@ body.prototype-page .form-page-title {
   letter-spacing: 0.3px;
 }
 
-/* 报名表滚动区内的主卡片：PC/移动统一白底、描边与阴影（与左侧导航卡一致） */
+/* 报名表：外层 .apply-form-page 已为白底+描边；内层卡片不再重复描边 */
 body.prototype-page .apply-form-scroll > .card {
-  background: #fff;
-  border: 1px solid #eee2e4 !important;
-  border-radius: var(--radius-lg, 10px);
-  box-shadow: var(--shadow-soft, 0 4px 14px rgba(46, 24, 26, 0.06));
+  background: transparent !important;
+  border: none !important;
+  border-radius: 0 !important;
+  box-shadow: none !important;
+}
+
+body.prototype-page .apply-form-scroll > .card > .card-body {
+  padding-left: 0 !important;
+  padding-right: 0 !important;
+}
+
+/**
+ * 报名主操作按钮：与首页/登录页同款深蓝金渐变。
+ * - 使用 .participant-layout 限定（MainLayout 根节点首屏即有），避免仅依赖 body.prototype-page 在 onMounted 才挂上导致首帧仍是 Bootstrap 默认蓝/绿。
+ */
+.participant-layout {
+  --cxxfds-participant-btn-surface: radial-gradient(
+      ellipse at 78% 22%,
+      rgba(255, 211, 106, 0.14),
+      transparent 42%
+    ),
+    radial-gradient(ellipse at 24% 72%, rgba(255, 211, 106, 0.08), transparent 46%),
+    radial-gradient(ellipse at 50% 50%, rgba(13, 84, 162, 0.24), transparent 58%),
+    linear-gradient(128deg, #073b74 0%, #052d62 34%, #071f50 68%, #041433 100%);
+  --cxxfds-participant-btn-fallback: #052d62;
+}
+
+.participant-layout #applyForm .btn-primary,
+.participant-layout #applyForm .btn-success,
+.participant-layout #promiseSignModal .btn-primary,
+.participant-layout #applyNoticeModal .btn-primary {
+  color: #fff !important;
+  border: 1px solid rgba(255, 211, 106, 0.38) !important;
+  background: var(--cxxfds-participant-btn-surface) !important;
+  background-color: var(--cxxfds-participant-btn-fallback) !important;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2) !important;
+  transition: filter 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease !important;
+}
+
+.participant-layout #applyForm .btn-primary:hover:not(:disabled),
+.participant-layout #applyForm .btn-success:hover:not(:disabled),
+.participant-layout #promiseSignModal .btn-primary:hover:not(:disabled),
+.participant-layout #applyNoticeModal .btn-primary:hover:not(:disabled) {
+  filter: brightness(1.08) !important;
+  border-color: rgba(255, 244, 204, 0.5) !important;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.24) !important;
 }
 
-/* 附件预览/删除：横向一排、宽度随文案（避免误用 flex 平分导致块级换行） */
+.participant-layout #applyForm .btn-primary:disabled,
+.participant-layout #applyForm .btn-success:disabled,
+.participant-layout #promiseSignModal .btn-primary:disabled,
+.participant-layout #applyNoticeModal .btn-primary:disabled {
+  opacity: 0.58 !important;
+  filter: none !important;
+}
+
+.participant-layout #applyForm .btn-outline-primary {
+  color: #052d62 !important;
+  border-color: rgba(7, 59, 116, 0.55) !important;
+  background-color: #fff !important;
+  transition: color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease !important;
+}
+
+.participant-layout #applyForm .btn-outline-primary:hover:not(:disabled) {
+  color: #fff !important;
+  border-color: rgba(255, 211, 106, 0.48) !important;
+  background: var(--cxxfds-participant-btn-surface) !important;
+  background-color: var(--cxxfds-participant-btn-fallback) !important;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18) !important;
+}
+
+.participant-layout #applyForm .btn-outline-primary:focus-visible {
+  color: #fff !important;
+  border-color: rgba(255, 211, 106, 0.55) !important;
+  box-shadow: 0 0 0 0.2rem rgba(13, 84, 162, 0.22) !important;
+}
+
+.participant-layout #applyForm .btn-outline-primary:disabled {
+  opacity: 0.55 !important;
+}
+
+/* 附件预览等小按钮同为 outline-primary */
+.participant-layout #applyForm .btn-sm.btn-outline-primary {
+  font-weight: 500;
+}
+
+/* 附件预览/删除：横向一排、右对齐 */
 body.prototype-page #applyForm .supporting-file-actions {
   display: flex;
   flex-direction: row;
   flex-wrap: nowrap;
   align-items: center;
-  justify-content: flex-start;
+  justify-content: flex-end;
   gap: 0.45rem;
 }
 
+body.prototype-page #applyForm .supporting-file-item {
+  justify-content: space-between;
+  width: 100%;
+  box-sizing: border-box;
+}
+
+/** 参赛承诺书：「已完成签署」与登录页验证码提示同款浅底深字 */
+body.prototype-page #applyForm .promise-signed-badge {
+  background: #eef7fc !important;
+  color: #052d62 !important;
+  border: 1px solid rgba(5, 45, 98, 0.14) !important;
+  font-weight: 600 !important;
+}
+
 body.prototype-page #applyForm .supporting-file-actions .btn {
   flex: 0 0 auto;
   width: auto;
@@ -51,6 +166,28 @@ body.prototype-page #applyForm .supporting-file-actions .btn {
   white-space: nowrap;
 }
 
+/** 选手端侧栏：覆盖原型 .nav-link.active 洋红底，与页面浅蓝统一 */
+body.prototype-page.user-mobile-no-menu .participant-layout .layout-sider .nav-link.active,
+body.prototype-page.user-mobile-no-menu .participant-layout .layout-sider a.nav-link.router-link-active {
+  background: #eef7fc !important;
+  color: #052d62 !important;
+  font-weight: 600 !important;
+}
+
+/* PC：已上传附件一行两个 */
+@media (min-width: 768px) {
+  body.prototype-page #applyForm .supporting-file-list {
+    align-items: stretch;
+  }
+
+  body.prototype-page #applyForm .supporting-file-item {
+    flex: 0 0 calc((100% - 0.5rem) / 2);
+    max-width: calc((100% - 0.5rem) / 2);
+    box-sizing: border-box;
+    min-width: 0;
+  }
+}
+
 body.prototype-page #applyForm .form-label,
 body.prototype-page #applyForm .form-check-label {
   font-size: 0.9rem !important;
@@ -155,10 +292,18 @@ body.prototype-page #applyForm.was-validated .form-control:invalid,
 body.prototype-page #applyForm .form-control.is-invalid,
 body.prototype-page #applyForm.was-validated textarea.form-control:invalid,
 body.prototype-page #applyForm textarea.form-control.is-invalid {
+  border-color: #052d62 !important;
   background-image: none !important;
   padding-right: 0.75rem !important;
 }
 
+body.prototype-page #applyForm.was-validated .form-select:invalid:not([multiple]):not([size]),
+body.prototype-page #applyForm.was-validated .form-select:invalid:not([multiple])[size='1'],
+body.prototype-page #applyForm .form-select.is-invalid:not([multiple]):not([size]),
+body.prototype-page #applyForm .form-select.is-invalid:not([multiple])[size='1'] {
+  border-color: #052d62 !important;
+}
+
 body.prototype-page #applyForm.was-validated .form-select:valid:not([multiple]):not([size]),
 body.prototype-page #applyForm.was-validated .form-select:valid:not([multiple])[size='1'],
 body.prototype-page #applyForm .form-select.is-valid:not([multiple]):not([size]),
@@ -186,46 +331,61 @@ body.prototype-page #applyForm .form-select.is-valid:not([multiple])[size='1'] {
 body.prototype-page #applyForm .form-control:focus,
 body.prototype-page #applyForm .form-select:focus,
 body.prototype-page #applyForm .track-custom-toggle.form-select:focus {
-  border-color: #cfaeb3 !important;
-  box-shadow: 0 0 0 0.2rem rgba(180, 0, 16, 0.12) !important;
+  border-color: #052d62 !important;
+  box-shadow: 0 0 0 0.2rem rgba(5, 45, 98, 0.2) !important;
 }
 
 body.prototype-page #applyForm.was-validated .form-control:valid:focus,
 body.prototype-page #applyForm .form-control.is-valid:focus {
-  border-color: #cfaeb3 !important;
-  box-shadow: 0 0 0 0.2rem rgba(180, 0, 16, 0.12) !important;
+  border-color: #052d62 !important;
+  box-shadow: 0 0 0 0.2rem rgba(5, 45, 98, 0.2) !important;
 }
 
 body.prototype-page #applyForm.was-validated .form-control:invalid:focus,
 body.prototype-page #applyForm .form-control.is-invalid:focus,
 body.prototype-page #applyForm.was-validated .form-select:invalid:focus,
 body.prototype-page #applyForm .form-select.is-invalid:focus {
-  border-color: #dc3545 !important;
-  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.15) !important;
+  border-color: #052d62 !important;
+  box-shadow: 0 0 0 0.2rem rgba(5, 45, 98, 0.22) !important;
 }
 
 body.prototype-page #applyForm .track-custom-toggle.is-invalid {
-  border-color: #dc3545 !important;
+  border-color: #052d62 !important;
 }
 
 body.prototype-page #applyForm .invalid-feedback {
   font-size: 0.875rem !important;
   margin-top: 0.28rem;
-  color: #dc3545 !important;
+  color: #052d62 !important;
 }
 
 body.prototype-page #applyForm .invalid-feedback.d-block {
   display: block !important;
 }
 
+/** 报名表：必填星号与顶部加载错误文案与主题 #052d62 一致 */
+body.prototype-page #applyForm .text-danger {
+  color: #052d62 !important;
+}
+
+body.prototype-page .apply-form-page > .form-page-header .text-danger {
+  color: #052d62 !important;
+}
+
 body.prototype-page #applyForm .intro-char-count {
   font-size: 0.9rem !important;
   color: #6b6f76 !important;
 }
 
-body.prototype-page #applyForm .prototype-subtitle {
-  color: #6b6f76 !important;
-  font-size: 0.9rem !important;
+/** 多行文本：占位说明在输入框下方左侧（不用原生 placeholder） */
+body.prototype-page #applyForm .apply-textarea-placeholder-hint {
+  font-size: 0.875rem !important;
+  font-weight: 400 !important;
+  color: #9aa3ad !important;
+  line-height: 1.5 !important;
+  flex: 1 1 auto;
+  min-width: 0;
+  text-align: left !important;
 }
 
 /* 参赛承诺书弹窗：标题/签名区固定，仅正文区在过长时滚动；弹窗高度随内容变矮 */
@@ -312,6 +472,7 @@ body.prototype-page #promiseSignModal .promise-doc-scroll {
     display: flex;
     flex-direction: column;
     align-items: stretch;
+    justify-content: flex-start;
     gap: 0.5rem;
     width: 100%;
     max-width: none;
@@ -328,7 +489,7 @@ body.prototype-page #promiseSignModal .promise-doc-scroll {
     flex-direction: row !important;
     flex-wrap: nowrap !important;
     align-items: center;
-    justify-content: flex-start;
+    justify-content: flex-end;
     width: 100%;
   }
 
diff --git a/src/styles/login-page-overrides.css b/src/styles/login-page-overrides.css
index 2aa292a..1c4aee1 100644
--- a/src/styles/login-page-overrides.css
+++ b/src/styles/login-page-overrides.css
@@ -52,23 +52,31 @@ body.login-page-wls .login-page-wls__logo-img {
 }
 
 body.login-page-wls .login-page-wls__hint--error {
-  color: #c62828;
+  color: #052d62;
 }
 
+/** 调试「本次验证码」等成功提示：与选手端浅蓝主题一致 */
 body.login-page-wls .login-page-wls__hint--success {
-  color: #2e7d32;
+  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;
+  box-sizing: border-box;
 }
 
-/** 显式校验红框（原型表单在提交前不用 :invalid） */
+/** 显式校验：与主题色 #052d62 一致 */
 body.login-page-wls .login-page-wls__input.login-page-wls__input--error {
-  border-color: #e57373;
+  border-color: #052d62;
+  box-shadow: 0 0 0 2px rgba(5, 45, 98, 0.22);
 }
 
 body.login-page-wls .login-page-wls__input.login-page-wls__input--error:focus {
-  border-color: #e57373;
-  box-shadow: 0 0 0 3px rgba(229, 115, 115, 0.2);
+  border-color: #052d62;
+  box-shadow: 0 0 0 3px rgba(5, 45, 98, 0.25);
 }
 
 body.login-page-wls .login-page-wls__slogan.login-page-wls__slogan--error {
-  color: #e65100;
+  color: #052d62;
 }
diff --git a/src/views/ApplyFormView.vue b/src/views/ApplyFormView.vue
index 20fa1c7..d2b6cad 100644
--- a/src/views/ApplyFormView.vue
+++ b/src/views/ApplyFormView.vue
@@ -2,7 +2,7 @@
 import { ref, reactive, computed, watch, onMounted, onBeforeUnmount, nextTick, type Ref } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { Modal, Dropdown } from 'bootstrap'
-import { getApiBase, TOKEN_KEY } from '../config/api'
+import { getApiBase, normalizePublicAssetUrl, TOKEN_KEY } from '../config/api'
 
 /** @types/bootstrap 未完全对齐 5.x 运行时 API */
 type BootstrapDropdownInstance = { toggle: () => void; hide: () => void }
@@ -249,6 +249,12 @@ function fieldColClass(field: SignupFormSchemaField): string {
   return 'col-md-4'
 }
 
+/** 多行文本：配置项 placeholder 改在输入框下方展示 */
+function textareaFieldPlaceholder(field: SignupFormSchemaField): string {
+  if (field.type !== 'textarea') return ''
+  return String(field.placeholder ?? '').trim()
+}
+
 function isFieldVisible(field: SignupFormSchemaField): boolean {
   if (field.type === 'file') return true
   if (field.key === 'location_province' || field.key === 'location_city') {
@@ -653,12 +659,13 @@ async function uploadNewFiles(target: 'plan' | 'supporting') {
     item.fromServer = true
     item.original_name = data.original_name as string
     item.size = data.size as number
-    item.url = data.url as string
-    item.previewUrl = data.url as string
+    const fileUrl = normalizePublicAssetUrl(String(data.url ?? ''))
+    item.url = fileUrl
+    item.previewUrl = fileUrl
     if (blobUrl && String(blobUrl).startsWith('blob:')) URL.revokeObjectURL(blobUrl)
     delete item.file
   }
-  showNotice('', '上传成功', 'success')
+  showNotice('文件已上传。', '上传成功', 'success')
   if (target === 'plan') validatePlanFile()
   else validateSupportingFiles()
 }
@@ -862,24 +869,30 @@ function applyServerPayload(d: {
   syncLocationFields()
   planFileItems.value = (d.files || [])
     .filter((f) => f.kind === 'plan')
-    .map((f) => ({
-      id: f.id,
-      fromServer: true,
-      original_name: f.original_name,
-      size: f.size,
-      url: f.url,
-      previewUrl: f.url,
-    }))
+    .map((f) => {
+      const u = normalizePublicAssetUrl(f.url)
+      return {
+        id: f.id,
+        fromServer: true,
+        original_name: f.original_name,
+        size: f.size,
+        url: u,
+        previewUrl: u,
+      }
+    })
   supportingFileItems.value = (d.files || [])
     .filter((f) => f.kind === 'supporting')
-    .map((f) => ({
-      id: f.id,
-      fromServer: true,
-      original_name: f.original_name,
-      size: f.size,
-      url: f.url,
-      previewUrl: f.url,
-    }))
+    .map((f) => {
+      const u = normalizePublicAssetUrl(f.url)
+      return {
+        id: f.id,
+        fromServer: true,
+        original_name: f.original_name,
+        size: f.size,
+        url: u,
+        previewUrl: u,
+      }
+    })
   validatePlanFile()
   validateSupportingFiles()
 }
@@ -913,7 +926,7 @@ async function saveDraftToServer() {
   }
   if (!r.ok) {
     void r.json().catch(() => ({}))
-    showNotice('', '保存失败', 'warning')
+    showNotice('草稿未能保存，请检查网络或稍后重试。', '保存失败', 'warning')
     return false
   }
   try {
@@ -937,7 +950,7 @@ async function submitApplicationToServer() {
   }
   if (!r.ok) {
     void r.json().catch(() => ({}))
-    showNotice('', '提交失败', 'warning')
+    showNotice('报名未能提交，请检查网络或稍后重试。', '提交失败', 'warning')
     return false
   }
   const d = (await r.json()) as Parameters<typeof applyServerPayload>[0]
@@ -953,7 +966,7 @@ async function onSaveClick() {
   const ok = await saveDraftToServer()
   if (!ok) return
   saveDraftLocal()
-  showNotice('', '保存成功', 'success')
+  showNotice('已保存草稿（按当前已填写信息暂存）。', '保存成功', 'success')
 }
 
 async function onSubmitClick() {
@@ -964,7 +977,7 @@ async function onSubmitClick() {
   if (!validateForm()) return
   const ok = await submitApplicationToServer()
   if (!ok) return
-  showNotice('', '提交成功', 'success')
+  showNotice('已提交报名', '提交成功', 'success')
 }
 
 onBeforeUnmount(() => {
@@ -1298,17 +1311,27 @@ onMounted(() => {
                 v-model="formModel[field.key]"
                 class="form-control editable"
                 rows="4"
+                placeholder=""
                 :required="effectiveRequired(field)"
                 :disabled="formDisabled"
-                :placeholder="(field.placeholder ?? '').trim()"
               />
-              <div v-if="field.key === 'intro'" class="d-flex justify-content-end mt-1">
-                <small class="text-secondary prototype-subtitle intro-char-count">{{ introCount }} 字</small>
+              <div
+                v-if="textareaFieldPlaceholder(field) || field.key === 'intro'"
+                class="d-flex flex-wrap align-items-baseline gap-2 mt-1 w-100"
+              >
+                <small v-if="textareaFieldPlaceholder(field)" class="apply-textarea-placeholder-hint mb-0">{{
+                  textareaFieldPlaceholder(field)
+                }}</small>
+                <small
+                  v-if="field.key === 'intro'"
+                  class="text-secondary prototype-subtitle intro-char-count mb-0 ms-auto"
+                  >{{ introCount }} 字</small
+                >
               </div>
               <small
                 v-if="participantFieldHelp(field.help)"
                 class="text-secondary prototype-subtitle d-block"
-                :class="{ 'mt-1': field.key === 'intro' }"
+                :class="{ 'mt-1': field.key === 'intro' || textareaFieldPlaceholder(field) }"
                 >{{ participantFieldHelp(field.help) }}</small
               >
             </div>
@@ -1417,11 +1440,42 @@ onMounted(() => {
             <button type="button" class="btn-close ms-auto" data-bs-dismiss="modal" aria-label="关闭" />
           </div>
           <div class="modal-body notice-modal-body">
+            <div class="notice-icon" aria-hidden="true">
+              <svg
+                v-if="noticeIsSuccess"
+                viewBox="0 0 24 24"
+                width="36"
+                height="36"
+                fill="none"
+                aria-hidden="true"
+              >
+                <circle cx="12" cy="12" r="10" stroke="currentColor" stroke-width="1.8" />
+                <path
+                  d="M7 12.2l3.1 3.1L17.2 8.8"
+                  stroke="currentColor"
+                  stroke-width="2"
+                  stroke-linecap="round"
+                  stroke-linejoin="round"
+                />
+              </svg>
+              <svg v-else viewBox="0 0 24 24" width="36" height="36" fill="none" aria-hidden="true">
+                <path
+                  d="M12 3.6L2.9 19.2a1 1 0 0 0 .86 1.5h16.48a1 1 0 0 0 .86-1.5L12 3.6z"
+                  stroke="currentColor"
+                  stroke-width="1.8"
+                />
+                <path d="M12 9v5" stroke="currentColor" stroke-width="2" stroke-linecap="round" />
+                <circle cx="12" cy="16.8" r="1.1" fill="currentColor" />
+              </svg>
+            </div>
             <h5 class="notice-title">{{ noticeTitle }}</h5>
-            <p class="notice-text text-break" style="white-space: pre-wrap">{{ noticeBody }}</p>
+            <p v-if="noticeBody.trim()" class="notice-text text-break" style="white-space: pre-wrap">
+              {{ noticeBody }}
+            </p>
           </div>
           <div class="modal-footer notice-modal-footer border-0">
-            <button type="button" class="btn btn-primary" data-bs-dismiss="modal">确定</button>
+            <button type="button" class="btn btn-light notice-cancel-btn" data-bs-dismiss="modal">取消</button>
+            <button type="button" class="btn btn-primary notice-ok-btn" data-bs-dismiss="modal">确定</button>
           </div>
         </div>
       </div>