/* حركات بسيطة و تحسينات */
.hero{background: radial-gradient(1200px 400px at 80% -20%, rgba(62,193,255,.18), transparent 60%),
                 radial-gradient(800px 300px at -10% 20%, rgba(17,194,107,.18), transparent 60%);} 
.card{transition:transform .25s ease, border-color .25s ease}
.card:hover{transform:translateY(-4px); border-color:var(--accent)}
.btn{transition:transform .15s ease, box-shadow .15s ease}
.btn:hover{transform:translateY(-2px); box-shadow:0 8px 20px rgba(17,194,107,.25)}