docs: 更新项目文档，完善需求和技术细节

official_website/js/main.js

@@ -432,4 +432,82 @@ function monitorErrors() {
 
 // 初始化性能和错误监控
 monitorPerformance();
-monitorErrors();
+monitorErrors();
+
+// 通用JavaScript功能
+
+// 导航栏滚动效果
+window.addEventListener('scroll', function() {
+    const navbar = document.querySelector('.navbar');
+    if (window.scrollY > 50) {
+        navbar.classList.add('scrolled');
+    } else {
+        navbar.classList.remove('scrolled');
+    }
+});
+
+// 懒加载图片
+document.addEventListener('DOMContentLoaded', function() {
+    const lazyImages = [].slice.call(document.querySelectorAll('img.lazy-load'));
+    
+    if ('IntersectionObserver' in window) {
+        let lazyImageObserver = new IntersectionObserver(function(entries, observer) {
+            entries.forEach(function(entry) {
+                if (entry.isIntersecting) {
+                    let lazyImage = entry.target;
+                    lazyImage.src = lazyImage.dataset.src || lazyImage.src;
+                    lazyImage.classList.remove('lazy-load');
+                    lazyImageObserver.unobserve(lazyImage);
+                }
+            });
+        });
+        
+        lazyImages.forEach(function(lazyImage) {
+            lazyImageObserver.observe(lazyImage);
+        });
+    }
+});
+
+// 平滑滚动
+document.querySelectorAll('a[href^="#"]').forEach(anchor => {
+    anchor.addEventListener('click', function (e) {
+        e.preventDefault();
+        
+        const target = document.querySelector(this.getAttribute('href'));
+        if (target) {
+            window.scrollTo({
+                top: target.offsetTop - 76,
+                behavior: 'smooth'
+            });
+        }
+    });
+});
+
+// 表单验证增强
+(function() {
+    'use strict';
+    
+    window.addEventListener('load', function() {
+        // 获取所有表单并阻止默认提交行为
+        var forms = document.getElementsByClassName('needs-validation');
+        var validation = Array.prototype.filter.call(forms, function(form) {
+            form.addEventListener('submit', function(event) {
+                if (form.checkValidity() === false) {
+                    event.preventDefault();
+                    event.stopPropagation();
+                }
+                form.classList.add('was-validated');
+            }, false);
+        });
+    }, false);
+})();
+
+// 动态年份更新
+document.addEventListener('DOMContentLoaded', function() {
+    const yearElements = document.querySelectorAll('.current-year');
+    const currentYear = new Date().getFullYear();
+    
+    yearElements.forEach(element => {
+        element.textContent = currentYear;
+    });
+});