*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;background-image:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;transition:all .3s ease}[dir=rtl]{direction:rtl}[dir=rtl] .nav-links,[dir=rtl] .footer-content{flex-direction:row-reverse}[dir=rtl] .features-grid,[dir=rtl] .download-buttons{direction:rtl}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.2);position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .3s ease}nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo{font-size:1.8rem;font-weight:700;color:#fff;text-decoration:none;display:flex;align-items:center;gap:10px}.logo:before{content:"⚡";font-size:2rem;animation:pulse 2s infinite}@keyframes 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