style(theme): 更新网站主题色彩方案与字体配置

- 调整主色调从 #1C1C1C 至 #1A1A1A，优化视觉层次
- 更新背景色系为暖白色调 (#FAFAF7, #F5F4F0 等)
- 配置中文字体栈，添加 serif 字体支持
- 优化文本颜色梯度，提升可读性
- 调整边框颜色，统一水墨风格
- 添加 Google Search Console 验证码配置项
- 新增桌面应用架构专家代理配置文件
- 重构 E2E 测试等待策略，提升稳定性
- 添加回归测试脚本，增强质量保障

src/hooks/use-mouse-glow.ts

@@ -0,0 +1,65 @@
+'use client';
+
+import { useRef, useCallback, useState } from 'react';
+
+interface MouseGlowState {
+  x: number;
+  y: number;
+  isHovered: boolean;
+}
+
+interface UseMouseGlowOptions {
+  /** Glow radius in pixels */
+  radius?: number;
+  /** Opacity multiplier (0-1) */
+  opacity?: number;
+}
+
+/**
+ * 水墨晕散鼠标跟随光晕 hook
+ * 用于卡片 hover 时的水墨晕散效果
+ */
+export function useMouseGlow(options: UseMouseGlowOptions = {}) {
+  const { radius = 400, opacity = 0.06 } = options;
+  const ref = useRef<HTMLDivElement>(null);
+  const [glow, setGlow] = useState<MouseGlowState>({ x: 0, y: 0, isHovered: false });
+
+  const handleMouseMove = useCallback((e: React.MouseEvent) => {
+    if (!ref.current) return;
+    const rect = ref.current.getBoundingClientRect();
+    setGlow({
+      x: e.clientX - rect.left,
+      y: e.clientY - rect.top,
+      isHovered: true,
+    });
+  }, []);
+
+  const handleMouseEnter = useCallback(() => {
+    setGlow(prev => ({ ...prev, isHovered: true }));
+  }, []);
+
+  const handleMouseLeave = useCallback(() => {
+    setGlow(prev => ({ ...prev, isHovered: false }));
+  }, []);
+
+  const glowStyle: React.CSSProperties = {
+    position: 'absolute',
+    inset: 0,
+    borderRadius: 'inherit',
+    pointerEvents: 'none',
+    transition: 'opacity 0.5s ease',
+    opacity: glow.isHovered ? 1 : 0,
+    background: `radial-gradient(${radius}px circle at ${glow.x}px ${glow.y}px, rgba(var(--color-primary-rgb), ${opacity}), transparent 40%)`,
+  };
+
+  return {
+    ref,
+    glowStyle,
+    handlers: {
+      onMouseMove: handleMouseMove,
+      onMouseEnter: handleMouseEnter,
+      onMouseLeave: handleMouseLeave,
+    },
+    isHovered: glow.isHovered,
+  };
+}