body {
  display: grid;
  min-height: 100vh;
  margin: 0;
  place-items: center;
  background: #f3f6fa;
  font-family: "Microsoft JhengHei", Arial, sans-serif;
}

.login-card {
  width: min(320px, calc(100vw - 64px));
  padding: 32px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 8%);
}

h1 {
  margin-top: 0;
  color: #1769aa;
}

label {
  display: block;
  margin: 16px 0 6px;
}

input {
  width: 100%;
  padding: 10px;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  box-sizing: border-box;
}

button {
  width: 100%;
  margin-top: 20px;
  padding: 11px;
  color: white;
  background: #1769aa;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

#message {
  min-height: 24px;
}

small {
  color: #666;
}