:root {
  --bg: #eef4f8;
  --panel: #ffffff;
  --ink: #11283d;
  --sub: #607486;
  --line: #d7e1ea;
  --brand: #0f7c7d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(900px 500px at 20% -10%, #dcecff 0, transparent 60%),
    radial-gradient(1000px 600px at 90% 0, #d6f4e8 0, transparent 55%), var(--bg);
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.login-card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}

.login-card h1 { margin: 0; font-size: 24px; }
.login-card p { margin: 8px 0 14px; color: var(--sub); font-size: 13px; }

form { display: grid; gap: 8px; }
label { font-size: 13px; color: #3e5568; }

input {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 10px;
  font-size: 16px;
}

button {
  margin-top: 6px;
  min-height: 42px;
  border: none;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
}

.msg {
  min-height: 20px;
  color: #9a3412;
  font-size: 12px;
}