body{font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;color:#1f2937}body.loading{overflow:hidden}nav{transition:background-color .3s ease}nav .nav-link{transition:color .3s ease;position:relative}nav .nav-link::after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background-color:#4f46e5;transition:width .3s ease}nav .nav-link:hover::after{width:100%}section{opacity:0;transform:translateY(20px);transition:all .6s cubic-bezier(.4,0,.2,1)}section.visible{opacity:1;transform:translateY(0)}.perspective{perspective:2000px;height:100%}.perspective .group{height:100%}.preserve-3d{transform-style:preserve-3d;transition:transform .8s cubic-bezier(.4,0,.2,1)}.backface-hidden{backface-visibility:hidden;position:absolute;width:100%;height:100%}.backface-hidden.rotate-y-180{transform:rotateY(180deg)}.backface-hidden .card-content{height:100%;padding:2rem;border-radius:1rem;box-shadow:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);transition:transform .3s ease,box-shadow .3s ease}.backface-hidden .card-content:hover{transform:translateY(-5px);box-shadow:0 25px 30px -5px rgba(0,0,0,.15),0 15px 15px -5px rgba(0,0,0,.08)}.animate-fade-in-up{animation:fadeInUp .6s ease-out forwards}.delay-200{animation-delay:.2s}.delay-400{animation-delay:.4s}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.expertise-card{transition:transform .3s ease;background:#fff;border-radius:.5rem;box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06)}.expertise-card:hover{transform:translateY(-2px)}.expertise-card h3{color:#4f46e5}.expertise-card ul li{transition:padding-left .3s ease}.expertise-card ul li:hover{padding-left:.5rem;color:#4f46e5}.hero-gradient{background-size:200% 200%;animation:gradient 15s ease infinite}@keyframes gradient{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}@media (max-width:640px){.hero-section{padding:4rem 1rem}.hero-section h1{font-size:2.5rem}.expertise-card{margin-bottom:1rem}}