/* 文件CDN系统 - 鉴权页统一样式（与安装向导一致） */
:root{
  --brand:#1e9fff;
  --brand-2:#13c2c2;
  --ok:#00b96b;
  --err:#f5222d;
  --text:#2c3e50;
  --muted:#8a94a6;
  --bg1:#eef4ff;
  --bg2:#e8fbf5;
  --card:#fff;
  --border:#e6ebf2;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(135deg,var(--bg1) 0%,var(--bg2) 100%);
  min-height:100vh;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",PingFang SC,"Microsoft YaHei",sans-serif;
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 16px;
}
.card{
  width:100%;
  max-width:400px;
  background:var(--card);
  border-radius:18px;
  box-shadow:0 18px 50px rgba(31,45,61,.14);
  overflow:hidden;
}
.card-head{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;
  padding:26px 34px;
}
.card-head .logo{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700}
.card-head .logo .icon{
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;
}
.card-head .logo .icon svg{width:22px;height:22px;fill:#fff}
.card-head .sub{margin-top:8px;font-size:13px;opacity:.92;line-height:1.6}

.card-body{padding:30px 34px 34px}
.welcome{font-size:17px;font-weight:700;margin:0 0 4px}
.welcome-sub{font-size:13px;color:var(--muted);margin-bottom:24px}

/* 表单 */
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:#5a6577;margin-bottom:7px}
.field input{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--border);border-radius:11px;
  font-size:14px;background:#fbfcfe;transition:.2s;color:var(--text);
}
.field input::placeholder{color:#b6bfcd}
.field input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,159,255,.16);background:#fff;
}
.field-row{display:flex;gap:12px;align-items:flex-start}
.field-row .field{flex:1;margin-bottom:0}
.code-img{
  height:44px;border-radius:11px;border:1px solid var(--border);
  cursor:pointer;flex:0 0 auto;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:48px;border:none;border-radius:12px;cursor:pointer;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-size:15px;font-weight:600;transition:.2s;
  text-decoration:none;
}
.btn:hover{opacity:.93;box-shadow:0 8px 22px rgba(30,159,255,.32)}

.tip{margin-top:18px;text-align:center;font-size:12px;color:var(--muted);line-height:1.7}