:root {
  color-scheme: dark;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #10151c;
  color: #edf2f7;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background: #10151c;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(100%, 420px);
  padding: 40px;
  border: 1px solid #344150;
  border-radius: 8px;
  background: #18212b;
  box-shadow: 0 24px 60px rgb(0 0 0 / 28%);
}

.login-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid #e4b95b;
  border-radius: 50%;
  color: #f5cc76;
  font-size: 24px;
  font-weight: 700;
}

.login-eyebrow {
  margin: 28px 0 8px;
  color: #f5cc76;
  font-size: 11px;
  letter-spacing: 1.8px;
}

h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
}

.login-intro {
  margin: 12px 0 28px;
  color: #aeb9c6;
  line-height: 1.6;
}

form { display: grid; gap: 10px; }

label {
  margin-top: 4px;
  color: #d8e0e8;
  font-size: 14px;
}

input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #536170;
  border-radius: 5px;
  background: #10161e;
  color: #f5f7fa;
  font: inherit;
}

input:focus {
  outline: 2px solid #f5cc76;
  outline-offset: 1px;
  border-color: #f5cc76;
}

button {
  min-height: 46px;
  margin-top: 12px;
  border: 0;
  border-radius: 5px;
  background: #e4b95b;
  color: #1b2026;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:hover { background: #f5cc76; }
button:disabled { cursor: wait; opacity: .65; }

.login-status {
  min-height: 22px;
  margin: 4px 0 0;
  color: #f39a8c;
  font-size: 13px;
}

@media (max-width: 480px) {
  .login-shell { padding: 16px; }
  .login-panel { padding: 30px 24px; }
  h1 { font-size: 27px; }
}