diff --git a/src/components/Dashboard.css b/src/components/Dashboard.css
index d3a5471..2882f5c 100644
--- a/src/components/Dashboard.css
+++ b/src/components/Dashboard.css
@@ -1,325 +1,457 @@
 /* src/components/Dashboard.css */
 .dashboard-container {
-    display: flex;
-    flex-direction: column;
-    height: 100vh;
-    background-color: #f5f5f5;
-  }
-  
-  .top-bar {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 10px 20px;
-    background-color: #fff;
-    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
-    position: sticky;
-    top: 0;
-    z-index: 100;
-  }
-  
-  .search-container {
-    display: flex;
-    flex-grow: 1;
-    max-width: 600px;
-    margin: 0 auto;
-  }
-  
-  .search-input {
-    flex-grow: 1;
-    padding: 8px 15px;
-    border: 1px solid #ddd;
-    border-radius: 20px 0 0 20px;
-    font-size: 16px;
-    outline: none;
-  }
-  
-  .search-button {
-    padding: 8px 15px;
-    background-color: #007bff;
-    color: white;
-    border: none;
-    border-radius: 0 20px 20px 0;
-    cursor: pointer;
-    font-size: 16px;
-  }
-  
-  .search-button:hover {
-    background-color: #0056b3;
-  }
-  
-  .user-info {
-    display: flex;
-    align-items: center;
-    gap: 10px;
-  }
-  
-  .user-avatar {
-    width: 40px;
-    height: 40px;
-    border-radius: 50%;
-    object-fit: cover;
-  }
-  
-  .username {
-    font-weight: bold;
-  }
-  
-  .logout-button {
-    padding: 5px 10px;
-    background-color: #f8f9fa;
-    border: 1px solid #ddd;
-    border-radius: 4px;
-    cursor: pointer;
-    margin-left: 10px;
-  }
-  
-  .logout-button:hover {
-    background-color: #e9ecef;
-  }
-  
-  .nav-tabs {
-    display: flex;
-    background-color: #fff;
-    border-bottom: 1px solid #ddd;
-    padding: 0 20px;
-  }
-  
-  .tab-button {
-    padding: 12px 20px;
-    background: none;
-    border: none;
-    border-bottom: 3px solid transparent;
-    cursor: pointer;
-    font-size: 16px;
-    color: #666;
-  }
-  
-  .tab-button:hover {
-    color: #007bff;
-  }
-  
-  .tab-button.active {
-    color: #007bff;
-    border-bottom-color: #007bff;
-    font-weight: bold;
-  }
-  
-  .content-area {
-    flex-grow: 1;
-    padding: 20px;
-    background-color: #fff;
-    margin: 20px;
-    border-radius: 4px;
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
-  }
-  
-  .loading, .error {
-    padding: 20px;
-    text-align: center;
-    font-size: 18px;
-  }
-  
-  .error {
-    color: #dc3545;
-  }
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+  background-color: #f8f9fa;
+  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+}
 
-/* 公告区样式 */
-  /* 轮播图样式 */
+/* 顶部栏样式 */
+.top-bar {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 10px 30px;
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
+  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+  position: sticky;
+  top: 0;
+  z-index: 1000;
+}
+
+.platform-name h2 {
+  margin: 0;
+  color: white;
+  font-size: 24px;
+  font-weight: 700;
+  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
+}
+
+.user-actions {
+  display: flex;
+  align-items: center;
+  gap: 15px;
+}
+
+.admin-center-button {
+  padding: 8px 16px;
+  background-color: #ff7f50;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.admin-center-button:hover {
+  background-color: #ff6347;
+  transform: translateY(-1px);
+}
+
+.user-info {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  color: white;
+}
+
+.user-avatar {
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  object-fit: cover;
+  border: 2px solid rgba(255, 255, 255, 0.3);
+}
+
+.username {
+  font-weight: 600;
+  color: white !important;
+}
+
+.logout-button {
+  padding: 6px 12px;
+  background-color: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.3);
+  color: white;
+  border-radius: 4px;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.logout-button:hover {
+  background-color: rgba(255, 255, 255, 0.1);
+  border-color: rgba(255, 255, 255, 0.5);
+}
+
+/* 导航标签样式 */
+.nav-tabs {
+  display: flex;
+  background-color: white;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+  padding: 0 30px;
+}
+
+.tab-button {
+  padding: 14px 24px;
+  background: none;
+  border: none;
+  border-bottom: 3px solid transparent;
+  cursor: pointer;
+  font-size: 15px;
+  font-weight: 600;
+  color: #666;
+  transition: all 0.2s;
+  position: relative;
+}
+
+.tab-button:hover {
+  color: #1e3c72;
+}
+
+.tab-button.active {
+  color: #1e3c72;
+  border-bottom-color: #1e3c72;
+}
+
+.tab-button.active::after {
+  content: '';
+  position: absolute;
+  bottom: -3px;
+  left: 0;
+  right: 0;
+  height: 3px;
+  background-color: #1e3c72;
+}
+
+/* 内容区域样式 */
+.content-area {
+  flex-grow: 1;
+  padding: 25px 30px;
+  background-color: white;
+  margin: 20px;
+  border-radius: 8px;
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
+}
+
+.section-search-container {
+  display: flex;
+  margin-bottom: 25px;
+  gap: 10px;
+}
+
+.section-search-input {
+  flex: 1;
+  padding: 10px 16px;
+  border: 1px solid #ddd;
+  border-radius: 6px;
+  font-size: 14px;
+  transition: all 0.2s;
+}
+
+.section-search-input:focus {
+  border-color: #1e3c72;
+  box-shadow: 0 0 0 2px rgba(30, 60, 114, 0.2);
+}
+
+.search-button, .reset-button {
+  padding: 10px 18px;
+  border: none;
+  border-radius: 6px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.search-button {
+  background-color: #1e3c72;
+  color: white;
+}
+
+.search-button:hover {
+  background-color: #2a5298;
+  transform: translateY(-1px);
+}
+
+.reset-button {
+  background-color: #f1f1f1;
+  color: #555;
+}
+
+.reset-button:hover {
+  background-color: #e0e0e0;
+}
+
+/* 轮播图样式 */
 .carousel-container {
-    position: relative;
-    width: 100%;
-    height: 200px;
-    overflow: hidden;
-    margin-bottom: 20px;
-    border-radius: 4px;
-  }
-  
-  .carousel-slide {
-    position: absolute;
-    width: 100%;
-    height: 100%;
-    opacity: 0;
-    transition: opacity 1s ease-in-out;
-  }
-  
-  .carousel-slide.active {
-    opacity: 1;
-  }
-  
-  .carousel-image {
-    width: 100%;
-    height: 100%;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    font-size: 24px;
-    font-weight: bold;
-    color: white;
-  }
-  
-  .gray-bg {
-    background-color: #666;
-  }
-  
-  .carousel-dots {
-    position: absolute;
-    bottom: 15px;
-    left: 0;
-    right: 0;
-    display: flex;
-    justify-content: center;
-    gap: 10px;
-  }
-  
-  .dot {
-    width: 12px;
-    height: 12px;
-    border-radius: 50%;
-    background-color: rgba(255, 255, 255, 0.5);
-    cursor: pointer;
-  }
-  
-  .dot.active {
-    background-color: white;
-  }
-  
-  /* 公告网格样式 */
-  .announcement-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
-    gap: 20px;
-  }
-  
-  .announcement-card {
-    background-color: white;
-    padding: 15px;
-    border-radius: 4px;
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
-    transition: transform 0.2s, box-shadow 0.2s;
-  }
-  
-  .announcement-card:hover {
-    transform: translateY(-2px);
-    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
-  }
-  
-  .announcement-card h3 {
-    margin-top: 0;
-    color: #007bff;
-    border-bottom: 1px solid #eee;
-    padding-bottom: 8px;
-  }
-  
-  .announcement-card p {
-    margin-bottom: 0;
-    color: #666;
-    line-height: 1.5;
-  }
-/* 分享区样式   */
- /* 上传头部样式 */
+  position: relative;
+  width: 100%;
+  height: 200px;
+  overflow: hidden;
+  margin-bottom: 30px;
+  border-radius: 8px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+}
+
+.carousel-slide {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  opacity: 0;
+  transition: opacity 0.5s ease-in-out;
+}
+
+.carousel-slide.active {
+  opacity: 1;
+}
+
+.carousel-image {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  justify-content: center;
+  padding: 30px;
+  color: white;
+  background: linear-gradient(135deg, #4b6cb7 0%, #182848 100%);
+}
+
+.carousel-image h3 {
+  font-size: 28px;
+  margin: 0 0 10px 0;
+  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
+}
+
+.carousel-image p {
+  margin: 5px 0;
+  font-size: 16px;
+  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
+}
+
+.carousel-dots {
+  position: absolute;
+  bottom: 15px;
+  left: 0;
+  right: 0;
+  display: flex;
+  justify-content: center;
+  gap: 8px;
+}
+
+.dot {
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  background-color: rgba(255, 255, 255, 0.5);
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.dot.active {
+  background-color: white;
+  transform: scale(1.2);
+}
+
+/* 公告网格样式 */
+.announcement-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
+  gap: 20px;
+  margin-bottom: 30px;
+}
+
+.announcement-card {
+  background-color: white;
+  padding: 20px;
+  border-radius: 8px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+  transition: all 0.2s;
+  border-left: 4px solid #1e3c72;
+  cursor: pointer;
+}
+
+.announcement-card:hover {
+  transform: translateY(-3px);
+  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
+}
+
+.announcement-card h3 {
+  margin: 0 0 12px 0;
+  color: #1e3c72;
+  font-size: 18px;
+  font-weight: 600;
+}
+
+.announcement-card p {
+  margin: 0 0 12px 0;
+  color: #555;
+  line-height: 1.5;
+  font-size: 14px;
+}
+
+.announcement-footer {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  color: #888;
+  font-size: 13px;
+}
+
+/* 推荐区域样式 */
+.recommend-section {
+  margin-top: 40px;
+  padding-top: 20px;
+  border-top: 1px solid #eee;
+}
+
+.section-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 20px;
+}
+
+.section-title {
+  margin: 0;
+  color: #1e3c72;
+  font-size: 20px;
+  font-weight: 600;
+}
+
+.refresh-btn {
+  padding: 8px 16px;
+  background-color: #f1f1f1;
+  border: none;
+  border-radius: 6px;
+  font-weight: 600;
+  color: #555;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.refresh-btn:hover {
+  background-color: #e0e0e0;
+}
+
+.refresh-btn:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.recommend-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
+  gap: 20px;
+}
+
+.recommend-card {
+  background-color: white;
+  border-radius: 8px;
+  overflow: hidden;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+  transition: all 0.2s;
+  cursor: pointer;
+}
+
+.recommend-card:hover {
+  transform: translateY(-3px);
+  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
+}
+
+.card-poster {
+  height: 120px;
+  background-color: #f5f5f5;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.poster-image {
+  width: 100%;
+  height: 100%;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  font-size: 36px;
+  font-weight: bold;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.card-info {
+  padding: 15px;
+}
+
+.card-title {
+  margin: 0 0 8px 0;
+  font-size: 16px;
+  font-weight: 600;
+  color: #333;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.card-meta {
+  margin: 0 0 5px 0;
+  font-size: 13px;
+  color: #666;
+}
+
+.card-subtitle {
+  margin: 0;
+  font-size: 13px;
+  color: #888;
+}
+
+.card-stats {
+  padding: 10px 15px;
+  border-top: 1px solid #eee;
+  font-size: 13px;
+  color: #666;
+}
+
+.no-recommendations {
+  grid-column: 1 / -1;
+  text-align: center;
+  padding: 30px;
+  color: #888;
+  font-size: 15px;
+}
+
+/* 上传按钮样式 */
 .upload-header {
   margin-bottom: 20px;
-  display: flex;
-  justify-content: flex-start;
 }
 
 .upload-btn {
   padding: 10px 20px;
-  background: #1890ff;
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
   color: white;
   border: none;
-  border-radius: 4px;
-  font-size: 16px;
+  border-radius: 6px;
+  font-weight: 600;
   cursor: pointer;
-  transition: all 0.3s;
+  transition: all 0.2s;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
 }
 
 .upload-btn:hover {
-  background: #40a9ff;
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(30, 60, 114, 0.3);
 }
 
-/* 弹窗样式 */
-.modal-overlay {
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  background: rgba(0,0,0,0.5);
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  z-index: 1000;
-}
-
-.upload-modal {
-  background: white;
-  padding: 25px;
-  border-radius: 8px;
-  width: 500px;
-  max-width: 90%;
-  position: relative;
-}
-
-.close-btn {
-  position: absolute;
-  top: 15px;
-  right: 15px;
-  background: none;
-  border: none;
-  font-size: 20px;
-  cursor: pointer;
-}
-
-/* 表单样式 */
-.form-group {
-  margin-bottom: 15px;
-}
-
-.form-group label {
-  display: block;
-  margin-bottom: 5px;
-  font-weight: 500;
-}
-
-.form-group input[type="text"],
-.form-group select,
-.form-group textarea {
-  width: 100%;
-  padding: 8px;
-  border: 1px solid #d9d9d9;
-  border-radius: 4px;
-}
-
-.form-group textarea {
-  min-height: 80px;
-}
-
-.form-actions {
-  display: flex;
-  justify-content: flex-end;
-  gap: 10px;
-  margin-top: 20px;
-}
-
-.cancel-btn {
-  padding: 8px 15px;
-  background: #f5f5f5;
-  border: 1px solid #d9d9d9;
-  border-radius: 4px;
-  cursor: pointer;
-}
-
-.cancel-btn:hover {
-  background: #e6e6e6;
-}
-  /* 筛选区域 */
+/* 筛选区域样式 */
 .filter-section {
-  background: #f9f9f9;
-  padding: 15px;
+  background-color: white;
+  padding: 15px 20px;
   border-radius: 8px;
-  margin-bottom: 20px;
+  margin-bottom: 25px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
 }
 
 .filter-group {
@@ -327,60 +459,59 @@
 }
 
 .filter-group h4 {
-  margin: 0 0 8px 0;
-  font-size: 15px;
-  color: #666;
+  margin: 0 0 10px 0;
+  font-size: 14px;
+  color: #555;
+  font-weight: 600;
 }
 
-/* 筛选按钮 */
+.filter-options {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
 .filter-btn {
   padding: 6px 12px;
-  margin-right: 8px;
-  margin-bottom: 8px;
+  background-color: #f5f5f5;
+  color: #333;  /* 改为黑字 */
   border: 1px solid #ddd;
-  background: white;
   border-radius: 4px;
+  font-size: 13px;
   cursor: pointer;
   transition: all 0.2s;
 }
 
 .filter-btn:hover {
-  border-color: #1890ff;
-  color: #1890ff;
+  border-color: #1e3c72;
+  color: #fbfbfc;
 }
 
 .filter-btn.active {
-  background: #1890ff;
+  background-color: #1e3c72;
   color: white;
-  border-color: #1890ff;
+  border-color: #1e3c72;
 }
 
-/* 确定按钮 */
 .confirm-btn {
   padding: 8px 20px;
-  background: #1890ff;
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
   color: white;
   border: none;
-  border-radius: 4px;
+  border-radius: 6px;
+  font-weight: 600;
   cursor: pointer;
-  font-size: 14px;
-  transition: opacity 0.3s;
+  transition: all 0.2s;
 }
 
 .confirm-btn:hover {
-  background: #007bff;
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(30, 60, 114, 0.3);
 }
 
-.confirm-btn:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-
-/* 资源列表 */
+/* 资源列表样式 */
 .resource-list {
-  display: flex;
-  flex-direction: column;
+  display: grid;
   gap: 15px;
 }
 
@@ -389,99 +520,146 @@
   align-items: center;
   padding: 15px;
   background-color: white;
-  border-radius: 4px;
-  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
-  transition: transform 0.2s, box-shadow 0.2s;
+  border-radius: 8px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+  transition: all 0.2s;
+  cursor: pointer;
 }
 
 .resource-item:hover {
-  transform: translateY(-2px);
-  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+  transform: translateY(-3px);
+  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
 }
 
 .resource-poster {
   margin-right: 15px;
+  flex-shrink: 0;
 }
 
 .poster-image {
-  width: 60px;
-  height: 80px;
-  background-color: #666;
+  width: 80px;
+  height: 110px;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  font-size: 28px;
+  font-weight: bold;
   display: flex;
   align-items: center;
   justify-content: center;
-  color: white;
-  font-size: 24px;
-  font-weight: bold;
   border-radius: 4px;
 }
 
 .resource-info {
   flex-grow: 1;
+  min-width: 0;
 }
 
 .resource-title {
-  margin: 0 0 5px 0;
+  margin: 0 0 8px 0;
   font-size: 16px;
-  font-weight: bold;
+  font-weight: 600;
+  color: #333;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
 
 .resource-meta {
-  margin: 0;
-  font-size: 14px;
+  margin: 0 0 5px 0;
+  font-size: 13px;
   color: #666;
 }
 
+.resource-subtitle {
+  margin: 0;
+  font-size: 13px;
+  color: #888;
+}
+
 .resource-stats {
-  display: flex;
-  flex-direction: column;
-  align-items: flex-end;
   margin-right: 20px;
-  min-width: 150px;
+  text-align: right;
+  min-width: 120px;
 }
 
 .stat {
+  display: block;
   font-size: 13px;
   color: #666;
   margin-bottom: 5px;
 }
 
 .download-btn {
-  padding: 8px 15px;
-  background-color: #28a745;
+  padding: 8px 16px;
+  background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
   color: white;
   border: none;
   border-radius: 4px;
+  font-weight: 600;
   cursor: pointer;
-  font-size: 14px;
-  transition: background-color 0.2s;
+  transition: all 0.2s;
+  white-space: nowrap;
 }
 
 .download-btn:hover {
-  background-color: #218838;
-}
-/* 发帖按钮样式 */
-.post-header {
-  margin-bottom: 20px;
-  text-align: right;
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.3);
 }
 
-.create-post-btn {
-  background-color: #1890ff;
+.delete-btn {
+  padding: 8px 16px;
+  background: linear-gradient(135deg, #ff5e62 0%, #ff2400 100%);
   color: white;
   border: none;
-  padding: 8px 16px;
+  border-radius: 4px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s;
+  margin-left: 10px;
+  white-space: nowrap;
+}
+
+.delete-btn:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(255, 94, 98, 0.3);
+}
+
+/* 分页样式 */
+.pagination {
+  display: flex;
+  justify-content: center;
+  margin: 30px 0 20px;
+  gap: 8px;
+}
+
+.pagination button {
+  padding: 8px 14px;
+  border: 1px solid #ddd;
+  background-color: white;
+  color: #333;
   border-radius: 4px;
   cursor: pointer;
+  transition: all 0.2s;
   font-size: 14px;
-  transition: background-color 0.3s;
 }
 
-.create-post-btn:hover {
-  background-color: #40a9ff;
+.pagination button:hover:not(.active):not(:disabled) {
+  border-color: #1e3c72;
+  color: #1e3c72;
 }
 
-/* 弹窗样式 */
+.pagination button.active {
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
+  color: white;
+  border-color: #1e3c72;
+}
+
+.pagination button:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* 修改后的模态框样式 */
 .post-modal-overlay {
   position: fixed;
   top: 0;
@@ -492,429 +670,197 @@
   display: flex;
   justify-content: center;
   align-items: center;
-  z-index: 1000;
+  z-index: 9999; /* 确保在最上层 */
 }
 
-.post-modal {
+.upload-modal,
+.post-modal,
+.download-modal {
   background-color: white;
-  padding: 24px;
+  padding: 25px;
   border-radius: 8px;
   width: 500px;
-  max-width: 90%;
+  max-width: calc(100% - 40px);
+  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
   position: relative;
-  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  margin: 20px auto; /* 添加一些外边距 */
+  max-height: 90vh; /* 限制最大高度 */
+  overflow-y: auto; /* 允许内容滚动 */
 }
 
-.post-modal h3 {
-  margin-top: 0;
-  margin-bottom: 20px;
-  font-size: 18px;
-  color: #333;
+/* 针对移动端的调整 */
+@media (max-width: 576px) {
+  .post-modal {
+    padding: 20px 15px;
+    width: 100%;
+    margin: 10px;
+  }
 }
 
+/* 确保模态框关闭按钮在最上层 */
 .modal-close-btn {
   position: absolute;
-  top: 16px;
-  right: 16px;
+  top: 15px;
+  right: 15px;
   background: none;
   border: none;
-  font-size: 20px;
+  font-size: 22px;
+  color: #888;
   cursor: pointer;
-  color: #999;
+  transition: all 0.2s;
+  z-index: 1;
 }
 
 .modal-close-btn:hover {
-  color: #666;
+  color: #555;
+  transform: rotate(90deg);
 }
 
 /* 表单样式 */
 .form-group {
-  margin-bottom: 16px;
+  margin-bottom: 18px;
 }
 
 .form-group label {
   display: block;
   margin-bottom: 8px;
-  font-weight: 500;
-  color: #333;
+  font-weight: 600;
+  color: #555;
+  font-size: 14px;
 }
 
 .form-group input[type="text"],
+.form-group input[type="file"],
+.form-group select,
 .form-group textarea {
   width: 100%;
-  padding: 8px 12px;
-  border: 1px solid #d9d9d9;
-  border-radius: 4px;
+  padding: 10px 12px;
+  border: 1px solid #ddd;
+  border-radius: 6px;
   font-size: 14px;
+  transition: all 0.2s;
+}
+
+.form-group input[type="text"]:focus,
+.form-group select:focus,
+.form-group textarea:focus {
+  border-color: #1e3c72;
+  box-shadow: 0 0 0 2px rgba(30, 60, 114, 0.2);
 }
 
 .form-group textarea {
-  min-height: 120px;
+  min-height: 100px;
   resize: vertical;
 }
 
-.upload-image-btn {
-  display: flex;
-  align-items: center;
-}
-
-.upload-image-btn label {
-  background-color: #f5f5f5;
-  padding: 8px 16px;
-  border-radius: 4px;
-  cursor: pointer;
-  border: 1px dashed #d9d9d9;
-  margin-right: 10px;
-  transition: all 0.3s;
-}
-
-.upload-image-btn label:hover {
-  border-color: #1890ff;
-  color: #1890ff;
-}
-
-.image-name {
-  font-size: 14px;
-  color: #666;
-}
-
-/* 按钮样式 */
 .form-actions {
   display: flex;
   justify-content: flex-end;
-  margin-top: 24px;
+  gap: 12px;
+  margin-top: 25px;
 }
 
 .cancel-btn {
+  padding: 10px 18px;
   background-color: #f5f5f5;
-  color: #333;
+  color: #555;
   border: none;
-  padding: 8px 16px;
-  border-radius: 4px;
+  border-radius: 6px;
+  font-weight: 600;
   cursor: pointer;
-  margin-right: 10px;
-  transition: background-color 0.3s;
+  transition: all 0.2s;
 }
 
 .cancel-btn:hover {
-  background-color: #e6e6e6;
+  background-color: #e0e0e0;
 }
 
-.submit-btn {
-  background-color: #1890ff;
+.submit-btn, .confirm-btn {
+  padding: 10px 18px;
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
   color: white;
   border: none;
-  padding: 8px 16px;
-  border-radius: 4px;
+  border-radius: 6px;
+  font-weight: 600;
   cursor: pointer;
-  transition: background-color 0.3s;
+  transition: all 0.2s;
 }
 
-.submit-btn:hover {
-  background-color: #40a9ff;
+.submit-btn:hover, .confirm-btn:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(30, 60, 114, 0.3);
 }
 
-.pagination {
-  display: flex;
-  justify-content: center;
-  margin: 20px 0;
-  gap: 5px;
-}
-
-.pagination button {
-  padding: 5px 10px;
-  border: 1px solid #ddd;
-  background: white;
-  cursor: pointer;
-}
-
-.pagination button.active {
-  background: #1890ff;
-  color: white;
-  border-color: #1890ff;
-}
-
-.pagination button:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-.filter-section {
-  position: sticky;
-  top: 0;
-  background: white;
-  z-index: 100;
-  padding: 15px;
-  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
-}
-
-.admin-center-btn {
-  padding: 5px 10px;
-  margin-right: 10px;
-  background-color: #ff5722;
-  color: white;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  font-size: 14px;
-}
-
-.admin-center-btn:hover {
-  background-color: #e64a19;
-}
-
-/* 区域搜索容器样式 */
-.section-search-container {
-  display: flex;
-  margin-bottom: 20px;
-  gap: 10px;
-}
-
-.section-search-input {
-  flex: 1;
-  padding: 10px 15px;
-  border: 1px solid #ddd;
-  border-radius: 4px;
-  font-size: 1rem;
-}
-
-.section-search-button {
-  padding: 10px 20px;
-  background-color: #007bff;
-  color: white;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  transition: background-color 0.3s;
-}
-
-.section-search-button:hover {
-  background-color: #0056b3;
-}
-
-/* 分享区顶部操作栏 */
-.share-top-actions {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 20px;
-  gap: 20px;
-}
-
-/* 上传按钮样式 */
-.upload-btn {
-  padding: 10px 20px;
-  background-color: #28a745;
-  color: white;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  transition: background-color 0.3s;
-  white-space: nowrap;
-}
-
-.upload-btn:hover {
-  background-color: #218838;
-}
-
-/* 下载模态框样式 */
-.modal-overlay {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background: rgba(0, 0, 0, 0.5);
-    z-index: 1000;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-}
-
-.download-modal {
-    background: white;
-    padding: 20px;
-    border-radius: 8px;
-    width: 500px;
-    max-width: 90%;
-    position: relative;
-}
-
-.download-modal .close-btn {
-    position: absolute;
-    top: 10px;
-    right: 10px;
-    background: none;
-    border: none;
-    font-size: 20px;
-    cursor: pointer;
-}
-
-.download-modal .form-group {
-    margin-bottom: 15px;
-}
-
-.download-modal .form-group label {
-    display: block;
-    margin-bottom: 5px;
-}
-
-.download-modal .form-group input {
-    width: 100%;
-    padding: 8px;
-    border: 1px solid #ddd;
-    border-radius: 4px;
-}
-
+/* 进度条样式 */
 .progress-container {
-    margin: 15px 0;
-    background: #f0f0f0;
-    border-radius: 4px;
-    height: 20px;
-    overflow: hidden;
+  height: 10px;
+  background-color: #f0f0f0;
+  border-radius: 5px;
+  margin: 15px 0;
+  overflow: hidden;
 }
 
 .progress-bar {
-    height: 100%;
-    background: #1890ff;
-    transition: width 0.3s;
-    color: white;
-    text-align: center;
-    font-size: 12px;
-    line-height: 20px;
+  height: 100%;
+  background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
+  transition: width 0.3s;
+  border-radius: 5px;
 }
 
-.modal-actions {
-    display: flex;
-    justify-content: flex-end;
-    gap: 10px;
-    margin-top: 20px;
-}
-
-.modal-actions button {
-    padding: 8px 16px;
-    border-radius: 4px;
-    cursor: pointer;
-}
-
-.modal-actions button:first-child {
-    background: #f5f5f5;
-    border: 1px solid #d9d9d9;
-}
-
-.modal-actions button:last-child {
-    background: #1890ff;
-    color: white;
-    border: none;
-}
-
-.modal-actions button:disabled {
-    background: #d9d9d9;
-    cursor: not-allowed;
-    opacity: 0.7;
-}
-
-/* 在Dashboard.css中添加以下样式 */
-
-.resource-actions {
-  display: flex;
-  gap: 10px;
-  margin-left: auto;
-}
-
-.delete-btn {
-  padding: 8px 15px;
-  background-color: #ff4d4f;
-  color: white;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  transition: background-color 0.3s;
-}
-
-.delete-btn:hover {
-  background-color: #ff7875;
-}
-
-.delete-btn:disabled {
-  background-color: #d9d9d9;
-  cursor: not-allowed;
-}
-
-.carousel-image {
-  padding: 1rem;
-  background: linear-gradient(to right, #f7b733, #fc4a1a);
-  color: white;
-  border-radius: 10px;
-  height: 180px;
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-  align-items: center;
-  font-size: 18px;
-  transition: all 0.5s ease-in-out;
-}
-
-.carousel-image h3 {
-  font-size: 22px;
-  margin: 0;
-}
-
-.carousel-image p {
-  margin: 4px 0;
-}
-
-
-/* 平台名称样式 */
-.platform-name {
-  flex: 1;
-  display: flex;
-  align-items: center;
-  padding-left: 20px;
-}
-
-.platform-name h2 {
-  margin: 0;
-  color: #333;
-  font-size: 24px;
-  font-weight: bold;
-}
-
-/* 分区搜索框样式 */
-.section-search-container {
-  padding: 10px 20px;
-  margin-bottom: 20px;
-}
-
-.section-search-input {
-  width: 100%;
-  padding: 8px 15px;
-  border: 1px solid #ddd;
-  border-radius: 20px;
-  font-size: 14px;
-  outline: none;
-}
-
-.section-search-input:focus {
-  border-color: #1890ff;
-}
-
-.no-results {
+/* 加载和错误提示 */
+.loading {
   text-align: center;
-  padding: 20px;
-  color: #888;
+  padding: 30px;
+  color: #666;
   font-size: 16px;
 }
 
-.reset-button {
-  padding: 8px 15px;
-  background-color: #f0f0f0;
-  border: 1px solid #ddd;
-  border-radius: 4px;
-  cursor: pointer;
-  transition: background-color 0.3s;
+.error {
+  text-align: center;
+  padding: 20px;
+  color: #e74c3c;
+  font-size: 16px;
+  background-color: #fdecea;
+  border-radius: 6px;
+  margin: 20px 0;
 }
 
-.reset-button:hover {
-  background-color: #e0e0e0;
+/* 响应式调整 */
+@media (max-width: 768px) {
+  .top-bar {
+    padding: 10px 15px;
+  }
+  
+  .nav-tabs {
+    padding: 0 15px;
+    overflow-x: auto;
+    white-space: nowrap;
+    -webkit-overflow-scrolling: touch;
+  }
+  
+  .content-area {
+    padding: 15px;
+    margin: 10px;
+  }
+  
+  .announcement-grid, .recommend-grid {
+    grid-template-columns: 1fr;
+  }
+  
+  .resource-item {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+  
+  .resource-poster {
+    margin-right: 0;
+    margin-bottom: 15px;
+  }
+  
+  .resource-stats {
+    margin-right: 0;
+    margin-top: 10px;
+    text-align: left;
+    width: 100%;
+  }
 }
\ No newline at end of file