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

tailwind.config.js

@@ -19,6 +19,14 @@ module.exports = {
           'Arial',
           'sans-serif',
         ],
+        serif: [
+          'var(--font-noto-serif-sc)',
+          'var(--font-noto-sans-sc)',
+          '"Noto Serif SC"',
+          '"Source Han Serif SC"',
+          '"STSongti-SC"',
+          'serif',
+        ],
         mono: ['var(--font-geist-mono)', 'monospace'],
         chinese: ['var(--font-noto-sans-sc)', 'sans-serif'],
         calligraphy: [
@@ -31,11 +39,11 @@ module.exports = {
       },
       colors: {
         primary: {
-          DEFAULT: '#1C1C1C',
-          hover: '#0A0A0A',
+          DEFAULT: '#1A1A1A',
+          hover: '#0D0D0D',
           light: '#3D3D3D',
-          lighter: '#F5F5F5',
-          rgb: '28, 28, 28',
+          lighter: '#F5F4F0',
+          rgb: '26, 26, 26',
         },
         brand: {
           primary: '#C41E3A',
@@ -44,30 +52,35 @@ module.exports = {
           'primary-bg': '#FEF2F4',
         },
         bg: {
-          primary: '#FFFFFF',
-          secondary: '#FFFBF5',
-          tertiary: '#F5F5F5',
-          section: '#FAFAFA',
-          hover: '#EFEFEF',
+          primary: '#FAFAF7',
+          secondary: '#F5F4F0',
+          tertiary: '#E8E6E0',
+          section: '#F2F1EC',
+          hover: '#EDECE7',
         },
         text: {
-          primary: '#1C1C1C',
-          secondary: '#3D3D3D',
-          tertiary: '#404040',
-          muted: '#595959',
-          subtle: '#A3A3A3',
-          placeholder: '#5C5C5C',
-          hint: '#8C8C8C',
+          primary: '#1A1A1A',
+          secondary: '#3A3835',
+          tertiary: '#4A4742',
+          muted: '#6B6560',
+          subtle: '#9C978F',
+          placeholder: '#7A756D',
+          hint: '#A09A92',
         },
         border: {
-          primary: '#E5E5E5',
-          secondary: '#D4D4D4',
-          accent: '#1C1C1C',
-          light: '#F0F0F0',
-          dark: '#333333',
+          primary: '#E0DDD6',
+          secondary: '#D4D0C8',
+          accent: '#1A1A1A',
+          light: '#EDEBE5',
+          dark: '#3A3835',
+        },
+        ink: {
+          wash: 'rgba(26, 26, 26, 0.04)',
+          medium: 'rgba(26, 26, 26, 0.08)',
+          dark: 'rgba(26, 26, 26, 0.15)',
         },
         link: {
-          DEFAULT: '#1C1C1C',
+          DEFAULT: '#1A1A1A',
           hover: '#C41E3A',
         },
         success: {