style: 应用现代简约配色方案到三栏布局

将HomeView.vue的三栏布局更新为现代简约风格：
- 左栏：#F5F5F5 浅灰背景 + #333 深灰文字
- 中栏：#FFFFFF 纯白背景
- 右栏：#FFFFFF 纯白背景
- 选中态：#E57373 浅红强调
- 边框：#EFEFEF 浅灰
- 悬停效果：#EBEBEB 浅灰

提升视觉层次和可读性，符合现代UI设计规范。

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

offer_frontend/src/views/portal/HomeView.vue

@@ -333,14 +333,14 @@ onMounted(async () => {
 <style scoped>
 /* ── 变量 ── */
 .three-panel {
-  --red: #B8860B;
+  --red: #E57373;
-  --dark: #1A1A1A;
+  --dark: #F5F5F5;
-  --gold: #B8860B;
+  --gold: #E57373;
-  --gold-lt: #D4AF37;
+  --gold-lt: #E57373;
-  --cream: #FAFAFA;
+  --cream: #FFFFFF;
-  --border: #D3D3D3;
+  --border: #EFEFEF;
-  --text: #2A1A1A;
+  --text: #333333;
-  --muted: #3A3A3A;
+  --muted: #999999;
 
   display: flex;
   height: calc(100vh - 220px);
@@ -348,7 +348,7 @@ onMounted(async () => {
   overflow: hidden;
   border-radius: 6px;
   border: 1px solid var(--border);
-  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
+  box-shadow: 0 4px 24px rgba(139,69,69,0.12);
   font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
 }
 
@@ -366,13 +366,13 @@ onMounted(async () => {
   display: flex;
   align-items: center;
   justify-content: space-between;
-  border-bottom: 1px solid rgba(255,255,255,0.08);
+  border-bottom: 1px solid #EFEFEF;
   flex-shrink: 0;
 }
 .left-title {
   font-size: 13px;
   font-weight: 700;
-  color: rgba(255,255,255,0.9);
+  color: #333333;
   letter-spacing: 0.1em;
 }
 .left-count {
@@ -388,7 +388,7 @@ onMounted(async () => {
 .left-body { flex: 1; overflow-y: auto; }
 .left-body::-webkit-scrollbar { width: 4px; }
 .left-body::-webkit-scrollbar-track { background: transparent; }
-.left-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 2px; }
+.left-body::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 2px; }
 
 /* 公司行 */
 .org-row {
@@ -397,19 +397,19 @@ onMounted(async () => {
   gap: 10px;
   padding: 10px 16px;
   border-left: 3px solid transparent;
-  border-bottom: 1px solid rgba(255,255,255,0.05);
+  border-bottom: 1px solid #EFEFEF;
   cursor: pointer;
   transition: background 0.15s;
 }
-.org-row:hover { background: rgba(255,255,255,0.06); }
+.org-row:hover { background: #EBEBEB; }
 .org-row.active {
-  border-left-color: var(--gold);
+  border-left-color: var(--red);
-  background: rgba(184,134,11,0.1);
+  background: #FFF5F5;
 }
 .org-avatar {
   width: 34px; height: 34px;
   border-radius: 6px;
-  background: linear-gradient(135deg, #B8860B, #8B6407);
+  background: linear-gradient(135deg, #C8973A, #9A6E28);
   display: flex; align-items: center; justify-content: center;
   font-size: 15px; font-weight: 900; color: #fff;
   flex-shrink: 0; overflow: hidden;
@@ -417,28 +417,28 @@ onMounted(async () => {
 .org-avatar img { width: 100%; height: 100%; object-fit: cover; }
 .child-avatar {
   width: 28px; height: 28px; font-size: 12px;
-  background: linear-gradient(135deg, #A67C07, #7D5A05);
+  background: linear-gradient(135deg, #C8A080, #9A7860);
 }
 .org-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
 .org-name {
   font-size: 13px; font-weight: 600;
-  color: rgba(255,255,255,0.88);
+  color: #333333;
   white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
 }
-.child-name { font-size: 12px; color: rgba(255,255,255,0.7); }
+.child-name { font-size: 12px; color: #666666; }
-.org-row.active .org-name { color: var(--gold-lt); }
+.org-row.active .org-name { color: var(--red); }
-.org-stat { font-size: 11px; color: rgba(255,255,255,0.38); }
+.org-stat { font-size: 11px; color: #999999; }
-.org-stat em { font-style: normal; color: var(--gold); font-weight: 700; }
+.org-stat em { font-style: normal; color: var(--red); font-weight: 700; }
 
 /* 子公司缩进 */
-.org-child { padding-left: 12px; background: rgba(0,0,0,0.12); }
+.org-child { padding-left: 12px; background: #FAFAFA; }
 .child-indent {
   display: flex; align-items: center; flex-shrink: 0;
   padding-left: 6px;
 }
 .child-line {
   display: block; width: 10px; height: 1px;
-  background: rgba(184,134,11,0.35);
+  background: #E57373;
 }
 
 /* ── 中栏 ── */
@@ -447,15 +447,15 @@ onMounted(async () => {
   flex-shrink: 0;
   display: flex;
   flex-direction: column;
-  background: var(--cream);
+  background: #FFFFFF;
-  border-right: 1px solid var(--border);
+  border-right: 1px solid #EFEFEF;
 }
 .mid-header {
   padding: 14px 16px;
   display: flex;
   align-items: center;
   justify-content: space-between;
-  border-bottom: 2px solid var(--border);
+  border-bottom: 2px solid #EFEFEF;
   flex-shrink: 0;
   background: #fff;
 }
@@ -463,8 +463,8 @@ onMounted(async () => {
 .mid-title-org { color: var(--red); }
 .mid-title.muted { color: var(--muted); font-weight: 400; }
 .mid-count {
-  font-size: 11px; color: var(--muted);
+  font-size: 11px; color: #999999;
-  background: #F0F0F0; border-radius: 10px; padding: 1px 8px;
+  background: #F5F5F5; border-radius: 10px; padding: 1px 8px;
 }
 .mid-body { flex: 1; overflow-y: auto; }
 
@@ -472,15 +472,15 @@ onMounted(async () => {
 .job-row {
   padding: 13px 16px;
   border-left: 3px solid transparent;
-  border-bottom: 1px solid var(--border);
+  border-bottom: 1px solid #EFEFEF;
   cursor: pointer;
   transition: background 0.15s;
   background: #fff;
 }
-.job-row:hover { background: #F8F8F8; }
+.job-row:hover { background: #FAFAFA; }
 .job-row.active {
   border-left-color: var(--red);
-  background: #FFFAF9;
+  background: #FFF5F5;
 }
 .job-row-title {
   font-size: 13px; font-weight: 600;
@@ -500,20 +500,20 @@ onMounted(async () => {
 .panel-right {
   flex: 1;
   overflow-y: auto;
-  background: #FAFAFA;
+  background: #FFFFFF;
 }
 
 /* Banner */
 .detail-banner {
   position: relative;
-  background: linear-gradient(135deg, #1A1A1A 0%, #2A2A2A 50%, #222222 100%);
+  background: linear-gradient(135deg, #8B4545 0%, #A85555 50%, #9A4C4C 100%);
   overflow: hidden;
 }
 .banner-deco {
   position: absolute; inset: 0;
   background:
-    repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(184,134,11,0.03) 20px, rgba(184,134,11,0.03) 21px),
+    repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(212,169,93,0.03) 20px, rgba(212,169,93,0.03) 21px),
-    repeating-linear-gradient(-45deg, transparent, transparent 20px, rgba(184,134,11,0.03) 20px, rgba(184,134,11,0.03) 21px);
+    repeating-linear-gradient(-45deg, transparent, transparent 20px, rgba(212,169,93,0.03) 20px, rgba(212,169,93,0.03) 21px);
 }
 .banner-content {
   position: relative;
@@ -527,8 +527,8 @@ onMounted(async () => {
 .banner-category {
   display: inline-block;
   padding: 3px 12px;
-  background: rgba(184,134,11,0.15);
+  background: rgba(212,169,93,0.15);
-  border: 1px solid rgba(184,134,11,0.35);
+  border: 1px solid rgba(212,169,93,0.35);
   color: var(--gold-lt);
   font-size: 11px; letter-spacing: 0.1em;
   border-radius: 2px; margin-bottom: 10px;
@@ -557,13 +557,13 @@ onMounted(async () => {
   display: flex; align-items: center; gap: 6px;
   padding: 9px 18px;
   background: transparent;
-  border: 1px solid rgba(184,134,11,0.5);
+  border: 1px solid rgba(212,169,93,0.5);
   color: var(--gold-lt);
   border-radius: 3px; font-size: 13px;
   cursor: pointer; transition: all 0.2s;
   font-family: inherit;
 }
-.btn-collect:hover { background: rgba(184,134,11,0.1); border-color: var(--gold); }
+.btn-collect:hover { background: rgba(212,169,93,0.1); border-color: var(--gold); }
 .btn-apply {
   padding: 9px 24px;
   background: var(--red);
@@ -572,9 +572,9 @@ onMounted(async () => {
   cursor: pointer; transition: all 0.2s;
   letter-spacing: 0.05em;
   font-family: inherit;
-  box-shadow: 0 4px 16px rgba(184,134,11,0.4);
+  box-shadow: 0 4px 16px rgba(229,115,115,0.4);
 }
-.btn-apply:hover { background: #A67C07; box-shadow: 0 6px 20px rgba(184,134,11,0.5); }
+.btn-apply:hover { background: #E86C6C; box-shadow: 0 6px 20px rgba(229,115,115,0.5); }
 .btn-apply.loading { opacity: 0.7; cursor: not-allowed; }
 .banner-hint { font-size: 12px; color: rgba(255,255,255,0.4); margin-top: 8px; }
 .banner-hint.success { color: #6FCF97; }
@@ -591,8 +591,8 @@ onMounted(async () => {
   background: #fff;
   border-radius: 6px;
   padding: 24px 28px;
-  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
+  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
-  border: 1px solid var(--border);
+  border: 1px solid #EFEFEF;
 }
 .detail-right { width: 224px; flex-shrink: 0; }
 
@@ -614,7 +614,7 @@ onMounted(async () => {
 .red-val { color: var(--red); }
 
 .section-divider {
-  height: 1px; background: var(--border);
+  height: 1px; background: #EFEFEF;
   margin: 20px 0;
 }
 
@@ -643,8 +643,8 @@ onMounted(async () => {
   background: #fff;
   border-radius: 6px;
   padding: 18px;
-  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
+  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
-  border: 1px solid var(--border);
+  border: 1px solid #EFEFEF;
 }
 .company-card-label {
   font-size: 11px; font-weight: 700;
@@ -655,7 +655,7 @@ onMounted(async () => {
 .cc-logo {
   width: 48px; height: 48px;
   border-radius: 8px; overflow: hidden; flex-shrink: 0;
-  background: linear-gradient(135deg, #B8860B, #8B6407);
+  background: linear-gradient(135deg, #D4A95D, #B08C3A);
   display: flex; align-items: center; justify-content: center;
   font-size: 20px; font-weight: 900; color: #fff;
   border: 1px solid var(--border);
@@ -663,7 +663,7 @@ onMounted(async () => {
 .cc-logo img { width: 100%; height: 100%; object-fit: cover; }
 .cc-name { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
 .cc-desc { font-size: 11px; color: var(--muted); line-height: 1.6; }
-.cc-divider { height: 1px; background: var(--border); margin-bottom: 12px; }
+.cc-divider { height: 1px; background: #EFEFEF; margin-bottom: 12px; }
 .cc-contact {
   display: flex; align-items: center; gap: 6px;
   font-size: 12px; color: var(--muted); word-break: break-all;
@@ -677,7 +677,7 @@ onMounted(async () => {
   transition: background 0.2s;
   font-family: inherit; letter-spacing: 0.05em;
 }
-.btn-apply-card:hover { background: #A67C07; }
+.btn-apply-card:hover { background: #E86C6C; }
 .btn-apply-card.loading { opacity: 0.7; cursor: not-allowed; }
 .apply-success { text-align: center; font-size: 12px; color: #27AE60; margin-top: 8px; }
 
@@ -691,7 +691,7 @@ onMounted(async () => {
 .empty-icon { opacity: 0.5; }
 .detail-loading { padding: 24px 28px; }
 .skeleton-row {
-  height: 14px; background: linear-gradient(90deg, #E8E8E8 25%, #F0F0F0 50%, #E8E8E8 75%);
+  height: 14px; background: linear-gradient(90deg, #EDE3DE 25%, #F5EDED 50%, #EDE3DE 75%);
   background-size: 200% 100%;
   border-radius: 3px; margin-bottom: 10px;
   animation: shimmer 1.5s infinite;