Function applyTheme

website/app/lib/theme.ts:32–50

(theme: Theme)

}

export function applyTheme(theme: Theme) {
  if (typeof window === 'undefined') return;
  
  const root = document.documentElement;
  const systemTheme = getSystemTheme();
  
  // 移除所有主题类
  root.classList.remove('light', 'dark');
  
  // 应用主题
  if (theme === 'system') {
    root.classList.add(systemTheme);
  } else {
    root.classList.add(theme);
  }
  
  // 保存到 localStorage
  localStorage.setItem('theme', theme);
}

export function getStoredTheme(): Theme {
  if (typeof window === 'undefined') return 'system';