优化样式表，更新字体引用，调整背景色，增强响应式设计；更新首页轮播图，添加新图片；重构JavaScript功能，增加客服小部件；修复HTML结构，确保页面加载顺畅。

classiccase.html

@@ -150,11 +150,12 @@
                 {id: 30, title: "河北黄骅港", desc: "我国\"西煤东运、北煤南运\"核心枢纽港口，货物吞吐量连续五年超3亿吨，年疏港车辆通行量突破120万辆次...", img: "assets/images/huanghua.jpg", href: "classiccase/huanghua_vehicle_analysis.html",category:["fleet","logistics","port"]},
                 {id: 32, title: "华海国际船舶代理有限公司", desc: "华海集团创立于2003年，主营船舶代理、货物代理、国际远洋及国内沿海运输、租船订舱...", img: "assets/images/huahai.png", href: "classiccase/rizhao_huahai_shipping.html",category:["ship-agent","freight-forwarder","logistics"]},
                 {id: 34, title: "上海港船务代理有限公司", desc: "1993年8月成立，植根上海并深度依托国际航运中心优势，专注水上运输领域的专业船舶代理服务...", img: "assets/images/shanghaigang.png", href: "classiccase/shanghai_port_coastal_system.html",category:["shipping-company","ship-agent","freight-forwarder"]},
-                {id: 35, title: "唐山港口实业集团有限公司", desc: "河北省港口整合平台核心企业，负责运营唐山港\"三港四区\"中的京唐港区与曹妃甸港区，年吞吐量逾3亿吨...", img: "assets/images/tangshangang.jpg", href: "classiccase/tangshan_bigdata_platform.html",category:["port"]},
+                {id: 35, title: "唐山港口实业集团有限公司", desc: "河北省港口整合平台核心企业，负责运营唐山港\"三港四区\"中的京唐港区与曹妃甸港区，年吞吐量逾3亿吨...", img: "assets/images/tangshanshiye.jpg", href: "classiccase/tangshan_bigdata_platform.html",category:["port"]},
                 {id: 37, title: "上海鹏华船务有限公司", desc: "2004年成立的中国首家公共船舶代理合资企业，致力于为全球客户提供全方位、高效率国际船舶代理服务...", img: "assets/images/shanghaipenghua.jpg", href: "classiccase/shanghai_penghua_platform.html",category:["ship-agent","shipping-company","freight-forwarder"]},
                 {id: 38, title: "上海新海国际船舶代理有限公司", desc: "1993年3月29日成立于上海，专注提供全方位国际船舶代理服务，作为连接船东、租家、港口及相关方的关键纽带...", img: "assets/images/xinhai.jpg", href: "classiccase/shanghai_xinhai_freight.html",category:["ship-agent","shipping-company","freight-forwarder"]},
                 {id: 39, title: "济宁港航建设有限公司", desc: "济宁能源集团核心子公司，主营京杭运河济宁段港口、航道、船闸一体化投资运营，年吞吐量超3000万吨...", img: "assets/images/jining.png", href: "classiccase/canal_logistics_supervision.html",category:["port","logistics"]}
-        ];
+      
+            ];
 
         // 渲染卡片函数
         function renderCards(category) {