:root{--bg:#05070f;--ink:#eaf0ff;--muted:#8b97b8;--line:rgba(255,255,255,.10);--glass:rgba(14,19,36,.72);--accent:#5b9dff;--accent2:#b06bff;--ok:#38d39f;--bad:#ff6b81;--r:16px}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased;display:flex;align-items:center;justify-content:center;overflow:hidden}
.bgwrap{position:fixed;inset:0;overflow:hidden;z-index:0}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.orb.a{width:520px;height:520px;background:radial-gradient(circle,#5b9dff,transparent 70%);top:-140px;left:-80px;animation:f1 14s ease-in-out infinite}
.orb.b{width:460px;height:460px;background:radial-gradient(circle,#b06bff,transparent 70%);bottom:-160px;right:-60px;animation:f2 17s ease-in-out infinite}
@keyframes f1{50%{transform:translate(60px,50px) scale(1.1)}}
@keyframes f2{50%{transform:translate(-50px,-40px) scale(1.15)}}
.card{position:relative;z-index:1;width:min(400px,92vw);background:var(--glass);backdrop-filter:blur(26px) saturate(160%);-webkit-backdrop-filter:blur(26px) saturate(160%);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 80px rgba(0,0,0,.6);padding:34px 30px;animation:pop .5s cubic-bezier(.2,.85,.25,1)}
@keyframes pop{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
.brand{display:flex;align-items:center;gap:11px;margin-bottom:22px}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(91,157,255,.16),0 0 20px var(--accent);animation:pulse 2.6s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 9px rgba(91,157,255,0),0 0 26px var(--accent)}}
.brand b{font-size:15px;font-weight:650;letter-spacing:-.2px}
h1{font-size:20px;font-weight:650;letter-spacing:-.3px;margin:0 0 4px}
.sub{color:var(--muted);font-size:13px;margin:0 0 22px}
label{display:block;font-size:11px;color:var(--muted);font-weight:520;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}
input{width:100%;height:46px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:0 14px;font:15px inherit;outline:0;transition:.2s;font-family:inherit}
input:focus{border-color:rgba(91,157,255,.6);background:rgba(91,157,255,.08);box-shadow:0 0 0 4px rgba(91,157,255,.12)}
input.code{text-align:center;letter-spacing:10px;font-size:24px;font-weight:600;font-variant-numeric:tabular-nums}
.btn{width:100%;height:47px;margin-top:22px;border:0;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:.2s;box-shadow:0 8px 24px rgba(91,157,255,.34);font-family:inherit;display:flex;align-items:center;justify-content:center;gap:8px}
.btn:hover{box-shadow:0 12px 30px rgba(91,157,255,.5);transform:translateY(-1px)}
.btn:active{transform:none}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.btn.ghost{background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--ink);box-shadow:none;height:42px;font-size:13.5px;margin-top:12px}
.btn.ghost:hover{background:rgba(255,255,255,.12);box-shadow:none}
.msg{margin-top:16px;padding:11px 13px;border-radius:11px;font-size:13px;display:none;align-items:center;gap:8px}
.msg.show{display:flex}
.msg.err{background:rgba(255,107,129,.13);border:1px solid rgba(255,107,129,.32);color:#ffb3bf}
.msg.ok{background:rgba(56,211,159,.13);border:1px solid rgba(56,211,159,.3);color:#7ce8c4}
.steps{display:flex;gap:6px;margin-bottom:20px}
.step{flex:1;height:4px;border-radius:4px;background:rgba(255,255,255,.1)}
.step.on{background:linear-gradient(90deg,var(--accent),var(--accent2))}
.divider{display:flex;align-items:center;gap:12px;margin:20px 0 4px;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.6px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.qrbox{background:#fff;border-radius:14px;padding:14px;width:fit-content;margin:6px auto 14px;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.qrbox img{display:block;width:210px;height:210px}
.secret{font:13px ui-monospace,monospace;text-align:center;color:var(--accent);background:rgba(91,157,255,.08);border:1px solid var(--line);border-radius:10px;padding:10px;word-break:break-all;margin-bottom:6px;user-select:all}
.hint{font-size:12px;color:var(--muted);line-height:1.6;margin-top:10px}
.foot{text-align:center;margin-top:20px;font-size:11px;color:var(--muted)}
.lock{font-size:11px;color:var(--muted);display:flex;align-items:center;justify-content:center;gap:6px;margin-top:18px}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}