*{margin:0;padding:0;box-sizing:border-box}
body{background:#000;font-family:-apple-system,"Microsoft YaHei",monospace;overflow:hidden;height:100vh}
#matrix{position:fixed;top:0;left:0;z-index:0}
.overlay{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1;display:flex;align-items:center;justify-content:center}
.card{background:rgba(0,12,0,.74);border:1px solid rgba(0,255,65,.32);border-radius:10px;padding:38px 40px;width:340px;max-height:94vh;overflow-y:auto;backdrop-filter:blur(6px);box-shadow:0 0 44px rgba(0,255,65,.16), inset 0 0 32px rgba(0,255,65,.05)}
h1{color:#00ff41;font-size:21px;font-weight:600;letter-spacing:4px;text-align:center;text-shadow:0 0 14px rgba(0,255,65,.85)}
.sub{color:#2f9;font-size:11px;text-align:center;margin:6px 0 26px;letter-spacing:2px;opacity:.8}
label{display:block;color:#0f8;font-size:12px;margin:14px 0 5px;letter-spacing:1px}
input{width:100%;background:rgba(0,20,0,.6);border:1px solid rgba(0,255,65,.3);border-radius:4px;padding:10px 12px;color:#00ff41;font-size:14px;font-family:monospace;letter-spacing:1px}
input:focus{outline:none;border-color:#00ff41;box-shadow:0 0 10px rgba(0,255,65,.4)}
input::placeholder{color:#175}
input.input-err{border-color:#ff4d4d;box-shadow:0 0 10px rgba(255,77,77,.4)}
input.input-ok{border-color:#00ff41}
.reg-tip{display:none;color:#ff4d4d;font-size:11px;margin-top:4px;letter-spacing:1px;text-shadow:0 0 8px rgba(255,0,0,.5)}
.reg-tip.ok{display:none}
button{width:100%;margin-top:26px;padding:11px;background:rgba(0,255,65,.12);border:1px solid #00ff41;border-radius:4px;color:#00ff41;font-size:15px;letter-spacing:6px;cursor:pointer;font-weight:600;transition:.2s}
button:hover{background:#00ff41;color:#000;box-shadow:0 0 22px rgba(0,255,65,.6)}
.err{color:#ff4d4d;font-size:12px;margin-top:12px;text-align:center;letter-spacing:1px;text-shadow:0 0 8px rgba(255,0,0,.6)}
.ok{color:#00ff41;font-size:12px;margin-top:12px;text-align:center;letter-spacing:1px;text-shadow:0 0 8px rgba(0,255,65,.6)}
.foot{position:fixed;bottom:14px;left:0;right:0;text-align:center;color:#0a5;font-size:11px;letter-spacing:3px;z-index:1;opacity:.55}