@keyframes fadeInUp{0%{opacity:0;transform:translateY(50px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-50px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(50px)}to{opacity:1;transform:translate(0)}}@keyframes bounce{0%,to{transform:translateY(-25%);animation-timing-function:cubic-bezier(.8,0,1,1)}50%{transform:translateY(0);animation-timing-function:cubic-bezier(0,0,.2,1)}}.animate-fade-in-up{animation:fadeInUp .8s ease-out}.animate-slide-in-left{animation:slideInLeft .8s ease-out}.animate-slide-in-right{animation:slideInRight .8s ease-out}.animate-bounce{animation:bounce 1s infinite}.gradient-bg{background:linear-gradient(135deg,#667eea,#764ba2)}.gradient-purple{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}.gradient-blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}.gradient-green{background:linear-gradient(135deg,#10b981,#059669)}.gradient-orange{background:linear-gradient(135deg,#f59e0b,#d97706)}.video-container{position:relative;width:100%;height:0;padding-bottom:56.25%;background:#000;border-radius:16px;overflow:hidden;box-shadow:0 20px 40px #0000001a}.video-container iframe,.video-container video{position:absolute;top:0;left:0;width:100%;height:100%}.tutorial-card{transition:all .3s ease;transform:translateY(0)}.tutorial-card:hover{transform:translateY(-10px);box-shadow:0 25px 50px #00000026}.tutorial-card:hover .play-overlay{opacity:1}.mobile-menu{transform:translate(-100%);transition:transform .3s ease-in-out;z-index:9999;visibility:hidden;opacity:0;position:fixed;top:0;left:0;width:100%;height:100vh;height:100dvh}.mobile-menu.active{transform:translate(0);visibility:visible;opacity:1}.sticky-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-bottom:1px solid rgba(0,0,0,.1)}html{scroll-behavior:smooth}@media (max-width: 768px){.video-container{border-radius:12px}.play-button{width:60px;height:60px;font-size:20px}}