style: 加粗段落内部字体

Co-authored-by: aider (deepseek/deepseek-chat) <aider@aider.chat>

static/css/style.css

@@ -17,6 +17,7 @@ body {
     background-color: #fef7e8;
     color: #333;
     line-height: 1.6;
+    font-weight: 500;
     min-height: 100vh;
     display: flex;
     flex-direction: column;
@@ -99,6 +100,10 @@ body {
     flex-direction: column;
 }
 
+.card-body p {
+    font-weight: 500;
+}
+
 .card-body h1,
 .card-body h2,
 .card-body h3,
@@ -140,6 +145,7 @@ body {
     color: #666;
     font-size: 0.9375rem;
     line-height: 1.6;
+    font-weight: 500;
     flex: 1;
     margin-bottom: 1rem;
     max-height: none;
@@ -314,3 +320,8 @@ body {
     font-size: 0.875rem;
     line-height: 1.5;
 }
+
+/* ==================== 文章内容段落加粗 ==================== */
+.post-content p {
+    font-weight: 500;
+}