body,html{margin:0;padding:0}html{scroll-behavior:smooth}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:#333;background:linear-gradient(135deg,#667eea,#764ba2)}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{padding:20px 0;position:absolute;width:100%;z-index:1000}nav{justify-content:space-between}.logo,nav{display:flex;align-items:center}.logo{font-size:24px;font-weight:700;color:#fff;gap:10px}.logo-icon-combo{position:relative;display:inline-block;width:28px;height:24px;margin-right:4px}.nav-links{display:flex;gap:30px;list-style:none}.nav-links a{color:#fff;text-decoration:none;font-weight:500;transition:opacity .3s ease}.nav-links a:hover{opacity:.8}.hero{min-height:100vh;display:flex;align-items:center;color:#fff;text-align:center;position:relative;background:linear-gradient(135deg,rgba(102,126,234,.7),rgba(118,75,162,.7)),url(https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?ixlib=rb-4.0.3&auto=format&fit=crop&w=2044&q=80) 50%/cover}.hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(102,126,234,.6),rgba(118,75,162,.6));z-index:1}.hero .container{position:relative;z-index:2}.hero:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-image:radial-gradient(circle at 20% 20%,hsla(0,0%,100%,.1) 1px,transparent 0),radial-gradient(circle at 80% 80%,hsla(0,0%,100%,.1) 1px,transparent 0),radial-gradient(circle at 60% 30%,hsla(0,0%,100%,.05) 2px,transparent 0),radial-gradient(circle at 30% 70%,hsla(0,0%,100%,.05) 2px,transparent 0);background-size:100px 100px,150px 150px,200px 200px,120px 120px;animation:float 20s ease-in-out infinite;z-index:1}@keyframes float{0%,to{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-20px) rotate(180deg)}}.hero-content h1{font-size:3.5rem;font-weight:700;margin-bottom:20px;line-height:1.2;text-shadow:0 4px 20px rgba(0,0,0,.3)}.hero-content .subtitle{font-size:1.3rem;margin-bottom:40px;opacity:.9;max-width:600px;margin-left:auto;margin-right:auto;text-shadow:0 2px 10px rgba(0,0,0,.2)}.cta-button{display:inline-flex;align-items:center;gap:10px;background:#ff6b6b;color:#fff;padding:18px 40px;border-radius:50px;text-decoration:none;font-weight:600;font-size:1.1rem;transition:all .3s ease;box-shadow:0 10px 30px hsla(0,100%,71%,.3)}.cta-button:hover{transform:translateY(-2px);box-shadow:0 15px 40px hsla(0,100%,71%,.4);background:#ff5252}.features{padding:100px 0;background:#fff}.features h2{text-align:center;font-size:2.5rem;margin-bottom:60px;color:#333}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:40px;gap:40px;margin-top:60px}.feature-card{text-align:center;padding:40px 20px;border-radius:10px;transition:transform .3s ease}.feature-card:hover{transform:translateY(-5px)}.feature-icon{font-size:3rem;margin-bottom:20px}.feature-card h3{font-size:1.5rem;margin-bottom:15px;color:#333}.feature-card p{color:#666;line-height:1.6}.demo{padding:100px 0;background:#f8f9fa;text-align:center}.demo h2{font-size:2.5rem;margin-bottom:20px;color:#333}.demo p{font-size:1.2rem;color:#666;margin-bottom:40px}.demo-image{max-width:900px;width:100%;margin:40px auto}.demo-image img{width:100%;height:auto;border-radius:12px;box-shadow:0 25px 70px rgba(0,0,0,.15);border:1px solid hsla(0,0%,100%,.2)}.contact{padding:100px 0;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.contact h2{text-align:center;font-size:2.5rem;margin-bottom:20px}.contact .subtitle{text-align:center;font-size:1.2rem;margin-bottom:50px;opacity:.9}.contact-form{max-width:600px;margin:0 auto;background:hsla(0,0%,100%,.1);padding:40px;border-radius:15px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid hsla(0,0%,100%,.2)}.form-group{margin-bottom:25px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:#fff}.form-group input,.form-group select,.form-group textarea{width:100%;padding:15px;border:none;border-radius:8px;background:hsla(0,0%,100%,.9);font-size:16px;transition:all .3s ease}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;box-shadow:0 0 0 3px hsla(0,0%,100%,.3);background:#fff}.form-group textarea{height:120px;resize:vertical}.submit-button{background:#ff6b6b;color:#fff;padding:15px 40px;border:none;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;display:block;margin:30px auto 0;box-shadow:0 10px 30px hsla(0,100%,71%,.3)}.submit-button:hover{transform:translateY(-2px);box-shadow:0 15px 40px hsla(0,100%,71%,.4);background:#ff5252}footer{background:#333;color:#fff;text-align:center;padding:40px 0}@media (max-width:768px){.hero-content h1{font-size:2.5rem}.hero-content .subtitle{font-size:1.1rem}.nav-links{display:none}.features-grid{grid-template-columns:1fr;gap:30px}}.fade-in{opacity:0;transform:translateY(30px);animation:fadeInUp .8s ease forwards}.fade-in-delay{animation-delay:.3s}@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}