Initial commit

docs/.vitepress/theme/utils/index.ts

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+export function getVideoUrl(name: string): string {
+  return `https://pub-7d4a6640bc77480c99842eea19bb2b69.r2.dev/${name}`
+}
+
+export function clamp(value: number, min: number, max: number): number {
+  return Math.min(Math.max(value, min), max)
+}
+
+export function isMobileDevice(): boolean {
+  if (typeof window === 'undefined') return false
+  return window.innerWidth < 768 || 'ontouchstart' in window
+}
+
+export function getOS(): 'mac' | 'windows' | 'linux' | 'unknown' {
+  if (typeof window === 'undefined') return 'unknown'
+  const userAgent = window.navigator.userAgent
+  if (userAgent.includes('Mac')) return 'mac'
+  if (userAgent.includes('Windows')) return 'windows'
+  if (userAgent.includes('Linux')) return 'linux'
+  return 'unknown'
+}
+
+export function debounce<T extends (...args: unknown[]) => void>(fn: T, delay: number): T {
+  let timeoutId: ReturnType<typeof setTimeout>
+  return ((...args: Parameters<T>) => {
+    clearTimeout(timeoutId)
+    timeoutId = setTimeout(() => fn(...args), delay)
+  }) as T
+}
+
+export function throttle<T extends (...args: unknown[]) => void>(fn: T, delay: number): T {
+  let lastCall = 0
+  return ((...args: Parameters<T>) => {
+    const now = Date.now()
+    if (now - lastCall >= delay) {
+      lastCall = now
+      fn(...args)
+    }
+  }) as T
+}