修改促销、优化页面布局

Change-Id: Iae813b5b6557efa7059fe6d94bc32e96c984e4ea
diff --git a/src/pages/Forum/promotion-part/PromotionCarousel.css b/src/pages/Forum/promotion-part/PromotionCarousel.css
new file mode 100644
index 0000000..330c886
--- /dev/null
+++ b/src/pages/Forum/promotion-part/PromotionCarousel.css
@@ -0,0 +1,150 @@
+/* 优化后的轮播样式 */
+.carousel-container {
+  display: flex;
+  margin-top: 20px;
+  margin-left: 2%;
+  margin-right: 2%;
+}
+
+.carousel-section {
+  flex: 1;
+}
+
+.carousel-section h2 {
+  font-size: 20px;
+  margin-bottom: 15px;
+}
+
+.carousel {
+  position: relative;
+  background: linear-gradient(135deg, #e1cab2, #b68791);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
+  border-radius: 12px;
+  padding: 24px 48px;
+  color: #fff;
+  min-height: 220px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  overflow: hidden;
+}
+
+.promotion-name {
+  font-size: 24px;
+  font-weight: bold;
+  margin-top: 12px;
+  margin-bottom: 14px;
+  color: #135c69;
+  text-align: center;
+}
+
+.carousel .arrow {
+  background: rgba(0, 0, 0, 0.3);
+  border: none;
+  color: #fff;
+  font-size: 24px;
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  cursor: pointer;
+  position: absolute;
+  top: 50%;
+  transform: translateY(-50%);
+  transition: background 0.3s;
+  z-index: 10;
+}
+
+.carousel .arrow.left {
+  left: 16px;
+}
+
+.carousel .arrow.right {
+  right: 16px;
+}
+
+.carousel .arrow:hover {
+  background: rgba(0, 0, 0, 0.5);
+}
+
+.carousel .slide {
+  width: 100%;
+  max-width: 720px;
+  text-align: left;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  line-height: 1.6;
+}
+
+.carousel .slide strong {
+  font-weight: 600;
+}
+
+.carousel .action-buttons {
+  display: flex;
+  gap: 12px;
+  margin-top: 12px;
+}
+
+.carousel .action-buttons button {
+  padding: 6px 12px;
+  font-size: 14px;
+  border: none;
+  border-radius: 6px;
+  cursor: pointer;
+  transition: background-color 0.3s;
+}
+
+.carousel .delete-btn {
+  background-color: #d9534f;
+  color: white;
+}
+
+.carousel .delete-btn:hover {
+  background-color: #c9302c;
+}
+
+.carousel .view-btn {
+  background-color: #5bc0de;
+  color: white;
+}
+
+.carousel .view-btn:hover {
+  background-color: #31b0d5;
+}
+
+/* 轮播指示器容器 */
+.carousel-indicators {
+  margin-top: 5%;
+  position: absolute; 
+  bottom: 16px;       /* 距离轮播底部的间距,可调整 */
+  left: 50%;         
+  transform: translateX(-50%); /* 水平居中 */
+  display: flex;     
+  align-items: center;
+  gap: 8px;          /* 圆点间距 */
+  z-index: 10;       /* 确保在内容上层 */
+}
+
+/* 单个圆点 */
+.carousel-indicators .indicator {
+  width: 12px;       
+  height: 12px;      
+  border-radius: 50%; /* 圆形 */
+  background-color: rgba(255, 255, 255, 0.4); /* 未选中状态颜色 */
+  cursor: pointer;   
+  transition: background-color 0.3s ease; /* 渐变过渡 */
+}
+
+/* 选中状态的圆点 */
+.carousel-indicators .indicator.active {
+  background-color: #fff; /* 选中时的高亮颜色 */
+}
+
+
+/* 冷门资源专用 slide */
+.cold-slide {
+  display: flex;
+  gap: 10px;
+  align-items: center;
+}