*{margin:0;padding:0;box-sizing:border-box}:root{--primary-gradient:linear-gradient(135deg,#4facfe,#00f2fe);--secondary-gradient:linear-gradient(135deg,#f093fb,#f5576c);--accent-gradient:linear-gradient(135deg,#667eea,#764ba2);--light-bg:#f8f9fa;--card-bg-light:rgba(255,255,255,0.8);--text-primary-light:#212529;--text-secondary-light:#6c757d;--border-light:rgba(0,0,0,0.1)}.dark{--dark-bg:#0a0a0f;--card-bg:rgba(255,255,255,0.05);--text-primary:#ffffff;--text-secondary:#a1a1aa;--border:rgba(255,255,255,0.1)}body{font-family:Inter,sans-serif;background:var(--light-bg);color:var(--text-primary-light);line-height:1.6;overflow-x:hidden}.dark body{background:var(--dark-bg);color:var(--text-primary)}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse at top,rgba(79,172,254,.1) 0,transparent 50%),radial-gradient(ellipse at bottom,rgba(0,242,254,.1) 0,transparent 50%);z-index:-1;animation:bgShift 20s ease-in-out infinite;opacity:.5}.dark 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h1{background:linear-gradient(135deg,#ffffff,#a1a1aa);-webkit-background-clip:text;background-clip:text}.hero-subtitle{font-size:1.3rem;color:var(--text-secondary-light);margin-bottom:3rem;max-width:600px;margin-left:auto;margin-right:auto}.dark .hero-subtitle{color:var(--text-secondary)}.hero-cta{margin-bottom:4rem}.btn-hero{font-size:1.1rem;padding:1rem 2.5rem;background:var(--accent-gradient);border-radius:50px;box-shadow:0 20px 40px rgba(102,126,234,.3);position:relative;overflow:hidden;color:white}.dark .btn-hero{background:var(--primary-gradient)}.btn-hero:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn-hero:hover:before{left:100%}@keyframes fadeInUp{0%{opacity:0;transform:translateY(50px)}to{opacity:1;transform:translateY(0)}}.features{padding:8rem 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