:root{
  --primary:#2563eb;
  --primary-deep:#1d4ed8;
  --bg:#f4f7fb;
  --text:#0f172a;
  --muted:#64748b;
  --line:#e8eef6;
  --ok:#0f766e;
  --warn:#d97706;
  --danger:#dc2626;
  --radius:22px;
  --shadow:0 12px 34px rgba(15,23,42,.06);
}

*{box-sizing:border-box;}

html,body{margin:0;padding:0;}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  font-size:15px;
  line-height:1.6;
}

.auth-body{
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px 16px 40px;
  background:
    radial-gradient(900px 420px at 12% -8%, rgba(37,99,235,.10), transparent 62%),
    radial-gradient(760px 380px at 96% 4%, rgba(14,165,233,.10), transparent 58%),
    var(--bg);
}

.auth-wrap{width:100%;max-width:440px;}

.auth-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:30px 26px 24px;
}

.auth-brand{display:flex;gap:14px;align-items:center;margin-bottom:20px;}

.auth-logo{
  width:50px;height:50px;border-radius:16px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#2563eb,#1d4ed8);
  color:#fff;font-size:22px;font-weight:700;
  box-shadow:0 8px 20px rgba(37,99,235,.28);
  flex:0 0 auto;
}

.auth-brand h1{font-size:19px;margin:0 0 2px;letter-spacing:.2px;}

.auth-brand p{margin:0;font-size:13px;color:var(--muted);}

.auth-alert{
  border-radius:14px;padding:11px 14px;font-size:13.5px;margin-bottom:16px;
  border:1px solid transparent;
}
.auth-alert.error{background:#fef2f2;color:#b91c1c;border-color:#fecaca;}
.auth-alert.warn{background:#fffbeb;color:#b45309;border-color:#fde68a;}

.field{display:block;margin-bottom:14px;}
.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:500;}
.field>span em{font-style:normal;font-weight:400;color:#94a3b8;font-size:12px;}

.field input{
  width:100%;height:46px;border-radius:14px;border:1px solid var(--line);
  background:#fbfdff;padding:0 14px;font-size:15px;color:var(--text);
  outline:none;transition:.16s;
  font-family:inherit;
}
.field input:focus{border-color:#93c5fd;background:#fff;box-shadow:0 0 0 3px rgba(37,99,235,.10);}
.field input::placeholder{color:#a8b6c8;}

.btn-primary{
  display:block;width:100%;
  height:48px;line-height:48px;text-align:center;
  border:0;border-radius:14px;cursor:pointer;
  background:linear-gradient(135deg,#2563eb,#1d4ed8);
  color:#fff;font-size:15.5px;font-weight:600;letter-spacing:.3px;
  box-shadow:0 10px 24px rgba(37,99,235,.24);
  transition:.16s;text-decoration:none;
  font-family:inherit;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(37,99,235,.30);}
.btn-primary:active{transform:translateY(0);}

.btn-ghost{
  display:block;width:100%;height:46px;line-height:44px;text-align:center;
  border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
  text-decoration:none;font-size:14.5px;font-weight:500;transition:.16s;
}
.btn-ghost:hover{border-color:#c9d9f0;background:#f8fbff;}

.auth-foot{margin:16px 0 0;text-align:center;font-size:13.5px;color:var(--muted);}
.auth-foot a{color:var(--primary);text-decoration:none;font-weight:500;}
.auth-foot a:hover{text-decoration:underline;}

.auth-copy{text-align:center;font-size:12px;color:#94a3b8;margin:18px 0 0;}

.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}

/* 落地页 */
.landing-card{padding-bottom:26px;}
.feature-list{
  list-style:none;margin:4px 0 22px;padding:0;
  display:grid;gap:10px;
}
.feature-list li{
  font-size:13.5px;color:#475569;background:#f8fbff;
  border:1px solid var(--line);border-radius:14px;padding:11px 14px;line-height:1.55;
}
.feature-list b{color:var(--text);}
.landing-actions{display:grid;gap:10px;}

@media (max-width:420px){
  .auth-card{padding:24px 18px 20px;border-radius:20px;}
  .auth-brand h1{font-size:17px;}
  .auth-logo{width:44px;height:44px;border-radius:14px;font-size:19px;}
}