*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-primary:#0b0b1a;--bg-secondary:#12122a;--bg-card:#1a1a35;
  --accent:#e8a838;--accent-hover:#f0bc5e;--accent-glow:rgba(232,168,56,.25);
  --success:#22c55e;--error:#ef4444;
  --text:#f0f0f5;--text-muted:#8888a0;--text-dim:#55556a;
  --border:rgba(255,255,255,.08);--input-bg:rgba(255,255,255,.06);
  --radius:12px;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg-primary);color:var(--text);line-height:1.6;
  min-height:100vh;
  background-image:radial-gradient(ellipse at 50% 0%,rgba(232,168,56,.06) 0%,transparent 60%);
}
.container{max-width:580px;margin:0 auto;padding:40px 20px 60px}

/* Header & Logos */
.header{text-align:center;margin-bottom:36px}
.logos{display:flex;align-items:center;justify-content:center;gap:20px;margin-bottom:18px}
.logo{height:56px;width:auto;object-fit:contain;border-radius:10px}
.logo-old{opacity:.5;filter:grayscale(.6)}
.logo-new{filter:drop-shadow(0 0 12px var(--accent-glow))}
.logos .arrow{color:var(--accent);font-size:28px;font-style:normal;flex-shrink:0}
.header h1{font-size:24px;font-weight:700;margin-bottom:6px;letter-spacing:-.5px}
.header p{color:var(--text-muted);font-size:15px}

/* Notice */
.notice{
  background:linear-gradient(135deg,rgba(232,168,56,.1),rgba(232,168,56,.03));
  border:1px solid rgba(232,168,56,.2);border-radius:var(--radius);
  padding:20px 24px;margin-bottom:32px;font-size:14px;color:var(--text-muted);line-height:1.8
}
.notice strong{color:var(--accent);font-weight:600}

/* Card */
.card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px 28px;margin-bottom:24px;
}
.card-title{
  font-size:16px;font-weight:600;margin-bottom:20px;
  padding-bottom:12px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:10px
}
.card-title .num{
  width:26px;height:26px;border-radius:50%;background:var(--accent);color:#000;
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0
}

/* Form */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px;font-weight:500}
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"]{
  width:100%;padding:12px 16px;background:var(--input-bg);border:1px solid var(--border);
  border-radius:8px;color:var(--text);font-size:15px;outline:none;transition:border-color .2s,box-shadow .2s
}
.form-group input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-group input::placeholder{color:var(--text-dim)}

/* Radio */
.radio-group{display:flex;gap:12px;margin-bottom:18px}
.radio-group label{
  flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px;border:1px solid var(--border);border-radius:8px;cursor:pointer;
  font-size:14px;color:var(--text-muted);transition:all .2s;text-align:center;
  background:var(--input-bg)
}
.radio-group input[type="radio"]{display:none}
.radio-group input:checked+label,
.radio-group label.active{
  border-color:var(--accent);color:var(--accent);background:rgba(232,168,56,.08)
}
.radio-wrap{flex:1;display:flex}
.radio-wrap label{width:100%}

/* New account fields toggle */
.new-account-fields{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .35s ease,opacity .25s ease,margin .25s ease;margin-top:0
}
.new-account-fields.show{max-height:300px;opacity:1;margin-top:4px}

/* Submit button */
.btn-submit{
  width:100%;padding:14px;border:none;border-radius:8px;cursor:pointer;
  font-size:16px;font-weight:600;color:#000;
  background:linear-gradient(135deg,var(--accent),#d4922e);
  transition:transform .15s,box-shadow .2s;margin-top:8px
}
.btn-submit:hover{transform:translateY(-1px);box-shadow:0 6px 24px var(--accent-glow)}
.btn-submit:active{transform:translateY(0)}
.btn-submit:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-submit .spinner{
  display:inline-block;width:18px;height:18px;border:2px solid rgba(0,0,0,.2);
  border-top-color:#000;border-radius:50%;animation:spin .6s linear infinite;
  vertical-align:middle;margin-right:8px
}
@keyframes spin{to{transform:rotate(360deg)}}

/* Result box */
.result-box{
  padding:20px 24px;border-radius:var(--radius);margin-top:24px;font-size:15px;
  display:none;line-height:1.7;animation:fadeIn .3s ease
}
.result-box.success{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3);color:var(--success)}
.result-box.error{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:var(--error)}
.result-box.show{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.result-box .site-link{
  display:inline-block;margin:4px;padding:8px 18px;border-radius:8px;
  background:var(--accent);color:#000;text-decoration:none;font-weight:600;font-size:13px;
  transition:opacity .2s
}
.result-box .site-link:hover{opacity:.85}
.result-box .result-links{margin-top:14px;font-size:14px;color:var(--text-muted)}

/* Sites box */
.sites-box{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px 24px;margin-bottom:32px
}
.sites-title{font-size:14px;color:var(--text-muted);margin-bottom:14px;font-weight:500}
.sites-list{display:flex;gap:10px;flex-wrap:wrap}
.site-item{
  flex:1;min-width:140px;display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:14px 16px;border:1px solid var(--border);border-radius:10px;
  background:var(--input-bg);text-decoration:none;transition:all .2s;cursor:pointer
}
.site-item:hover{border-color:var(--accent);background:rgba(232,168,56,.08)}
.site-label{color:var(--accent);font-size:15px;font-weight:600}
.site-desc{color:var(--text-dim);font-size:12px}

/* FAQ */
.faq{margin-top:36px}
.faq h3{font-size:16px;font-weight:600;margin-bottom:16px;color:var(--text-muted)}
.faq-item{margin-bottom:14px;padding:16px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:10px}
.faq-item dt{font-size:14px;font-weight:600;color:var(--text);margin-bottom:6px}
.faq-item dd{font-size:13px;color:var(--text-muted);line-height:1.7}
.faq-item a{color:var(--accent)}

/* Footer */
.footer{text-align:center;margin-top:40px;font-size:12px;color:var(--text-dim)}

@media(max-width:640px){
  .container{max-width:100%;padding:32px 16px 48px}
  .card{padding:24px 20px}
  .notice{padding:16px 18px;font-size:13px}
  .sites-box{padding:16px 18px}
  .site-item{min-width:calc(50% - 6px);padding:12px 10px}
  .site-label{font-size:14px}
  .faq-item{padding:14px 16px}
}

@media(max-width:480px){
  .container{padding:20px 12px 36px}
  .header{margin-bottom:24px}
  .header h1{font-size:20px}
  .header p{font-size:13px}
  .logos{gap:14px;margin-bottom:14px}
  .logo{height:44px}
  .logos .arrow{font-size:22px}
  .card{padding:20px 16px;margin-bottom:16px}
  .card-title{font-size:15px;margin-bottom:16px;padding-bottom:10px}
  .form-group{margin-bottom:14px}
  .form-group input[type="text"],
  .form-group input[type="password"],
  .form-group input[type="email"]{padding:10px 14px;font-size:14px}
  .radio-group{flex-direction:column;gap:8px}
  .btn-submit{padding:12px;font-size:15px}
  .notice{padding:14px 14px;font-size:12px;line-height:1.7}
  .sites-list{flex-direction:column}
  .site-item{min-width:100%;flex-direction:row;justify-content:center;gap:8px;padding:12px}
  .result-box{padding:16px 18px;font-size:14px}
  .result-box .site-link{display:block;text-align:center;margin:6px 0;padding:10px 16px}
  .result-box .result-links{font-size:13px}
  .faq-item{padding:12px 14px}
  .faq-item dt{font-size:13px}
  .faq-item dd{font-size:12px}
  .footer{margin-top:28px}
}

@media(max-width:360px){
  .container{padding:16px 10px 28px}
  .header h1{font-size:18px}
  .logo{height:36px}
  .logos{gap:10px}
  .card{padding:16px 14px}
  .notice{font-size:11.5px;padding:12px 12px}
  .sites-title{font-size:13px}
}