<!DOCTYPE html> <html lang="ar"> <head> <meta charset="UTF-8"/> <title>آلة حاسبة علمية</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"/> <!-- AdSense --> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-5816555339841018" crossorigin="anonymous"></script> <style> body { font-family: Arial, sans-serif; background: #f2f2f2; display: flex; flex-direction: column; align-items: center; padding: 20px; } .calculator { width: 320px; background: #fff; border-radius: 15px; box-shadow: 0 0 10px rgba(0,0,0,0.2); overflow: hidden; ...