fix: 主图1产品图片放大，四周更均匀

产品/飞牛 NAS/fyd-亚克力机箱 - 单/主图/主图1-正面展示.html

@@ -60,10 +60,10 @@
             margin-top: 6px;
             letter-spacing: 3px;
         }
-        /* 产品展示台 - 更大 */
+        /* 产品展示台 */
         .product-stage {
             width: 600px;
-            height: 480px;
+            height: 500px;
             background: rgba(255,255,255,0.08);
             border-radius: 25px;
             display: flex;
@@ -76,17 +76,23 @@
             box-shadow: 
                 0 20px 60px rgba(0,0,0,0.3),
                 inset 0 1px 0 rgba(255,255,255,0.1);
+            overflow: hidden;
         }
-        /* 产品图片 - 放大 */
+        /* 产品图片 - 放大并裁剪 */
         .product-img-wrapper {
             position: relative;
-            padding: 15px;
+            width: 100%;
+            height: 100%;
+            display: flex;
+            align-items: center;
+            justify-content: center;
         }
         .product-img {
-            max-width: 520px;
+            width: 580px;
-            max-height: 420px;
+            height: 480px;
-            object-fit: contain;
+            object-fit: cover;
-            border-radius: 12px;
+            object-position: center;
+            border-radius: 10px;
             box-shadow: 
                 0 15px 40px rgba(0,0,0,0.4),
                 0 0 0 1px rgba(255,255,255,0.1);
@@ -97,9 +103,10 @@
             top: 100%;
             left: 50%;
             transform: translateX(-50%) scaleY(-1);
-            max-width: 520px;
+            width: 580px;
-            max-height: 420px;
+            height: 100px;
-            object-fit: contain;
+            object-fit: cover;
+            object-position: center bottom;
             opacity: 0.12;
             filter: blur(3px);
             mask-image: linear-gradient(to top, rgba(0,0,0,0.3), transparent);