html,body{margin:0;height:100%;font-family:Inter,Arial;background:#07111f;color:#fff}#particles-js{position:fixed;inset:0}.hero{display:flex;height:100%;align-items:center;justify-content:center;position:relative}.card{background:rgba(255,255,255,.08);backdrop-filter:blur(16px);padding:60px;border-radius:24px;text-align:center;max-width:800px;box-shadow:0 0 60px rgba(0,170,255,.3)}.logo{width:120px;height:120px;border-radius:50%;background:#0af;margin:auto;display:flex;align-items:center;justify-content:center;font-size:48px;font-weight:bold}input{padding:14px;width:60%}button{padding:14px 20px}