* { box-sizing: border-box; }
body.auth-body{
  font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:linear-gradient(160deg,#f3f5fb 0%,#eef2fb 100%);
  color:#1f2937; margin:0; min-height:100vh; display:flex; align-items:center; justify-content:center; padding:20px;
}
.auth-card{width:100%;max-width:400px;background:#fff;border:1px solid #e3e8f2;border-radius:18px;padding:32px 28px;box-shadow:0 10px 40px rgba(60,90,150,.12)}
.auth-brand{text-align:center;margin-bottom:22px}
.auth-badge{display:inline-block;background:linear-gradient(90deg,#3a6ff7,#7c5cfc);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:16px;letter-spacing:1px;margin-bottom:12px}
.auth-brand h1{font-size:22px;margin:0 0 6px;background:linear-gradient(90deg,#2a5bf0,#7c5cfc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.auth-sub{color:#6b7484;font-size:12px;margin:0}
.auth-tabs{display:flex;background:#f0f4fb;border-radius:10px;padding:4px;margin-bottom:20px}
.auth-tab{flex:1;border:0;background:transparent;padding:9px;border-radius:8px;font-size:15px;color:#6b7484;cursor:pointer;font-weight:600}
.auth-tab.active{background:#fff;color:#2a5bf0;box-shadow:0 2px 8px rgba(60,90,150,.1)}
.auth-field{margin-bottom:16px}
.auth-field label{display:block;font-size:13px;color:#6b7484;margin-bottom:6px}
.auth-field input{width:100%;padding:11px 12px;border:1px solid #e3e8f2;border-radius:9px;font-size:15px;outline:none}
.auth-field input:focus{border-color:#3a6ff7}
.code-row{display:flex;gap:8px}
.code-row input{flex:1}
.code-row button{white-space:nowrap;border:1px solid #3a6ff7;background:#fff;color:#3a6ff7;border-radius:9px;padding:0 14px;font-size:14px;cursor:pointer;font-weight:600}
.code-row button:disabled{opacity:.5;cursor:default}
.auth-submit{width:100%;border:0;background:linear-gradient(90deg,#3a6ff7,#7c5cfc);color:#fff;padding:12px;border-radius:10px;font-size:16px;font-weight:700;cursor:pointer;margin-top:4px}
.auth-submit:active{opacity:.9}
.auth-msg{min-height:20px;font-size:13px;margin-top:12px;text-align:center}
.auth-msg.ok{color:#18a766}
.auth-msg.err{color:#e04343}
.auth-tip{color:#98a1b3;font-size:12px;margin-top:10px;text-align:center;line-height:1.6}