body{font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(120deg,#18181b,#232526,#18181b);color:#fff;min-height:100vh;margin:0;position:relative;overflow-x:hidden}body:before{content:"";position:fixed;top:-20%;left:-20%;width:140vw;height:140vh;background:radial-gradient(circle at 60% 40%,#2563eb55,#18181b 80%);z-index:0;filter:blur(80px) saturate(1.2);opacity:.7;pointer-events:none;animation:bgmove 16s ease-in-out infinite alternate}@keyframes bgmove{0%{background-position:60% 40%}to{background-position:40% 60%}}main{position:relative;z-index:1}header,section,footer{z-index:1}.bg-glass,.feature-card,.stack-card{background:#242730d9;box-shadow:0 8px 32px #1f26872e;-webkit-backdrop-filter:blur(12px) saturate(1.2);backdrop-filter:blur(12px) saturate(1.2);border-radius:1.5rem;border:1px solid rgba(255,255,255,.08)}.feature-card{padding:2rem 1.5rem;margin:.5rem 0;text-align:center;transition:transform .18s,box-shadow .18s}.feature-card:hover{transform:translateY(-4px) scale(1.03);box-shadow:0 12px 36px #2563eb33}.stack-card{padding:2.5rem 2rem 2rem;margin-bottom:2.5rem;text-align:center}input[type=email]{border:none;outline:none;font-size:1.1rem;border-radius:.75rem;padding:1rem 1.5rem;background:#fff;color:#18181b;box-shadow:0 2px 12px #00000014;margin-right:.5rem;min-width:260px;max-width:340px;transition:box-shadow .18s,border .18s}input[type=email]:focus{box-shadow:0 0 0 3px #2563eb55;border:1.5px solid #2563eb}button[type=submit]{background:linear-gradient(90deg,#2563eb,#1e40af);color:#fff;font-weight:700;border:none;border-radius:.75rem;padding:1rem 2rem;font-size:1.1rem;cursor:pointer;box-shadow:0 2px 12px #2563eb33;transition:background .18s,box-shadow .18s,transform .18s}button[type=submit]:hover:not(:disabled){background:linear-gradient(90deg,#1e40af,#2563eb);box-shadow:0 4px 18px #2563eb55;transform:translateY(-2px) scale(1.03)}button[disabled]{opacity:.6;cursor:not-allowed}ul.stack-list{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;margin-bottom:1rem;padding:0;list-style:none}.stack-list li{background:linear-gradient(90deg,#2563eb,#1e40af);color:#fff;padding:.5rem 1.25rem;border-radius:999px;font-size:1rem;font-weight:500;box-shadow:0 2px 8px #2563eb22}@media (max-width: 900px){.feature-card,.stack-card{padding:1.5rem 1rem}}@media (max-width: 768px){header,section,footer{padding-left:.5rem;padding-right:.5rem}.feature-grid{grid-template-columns:1fr!important}}