* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: #18212f;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  background:
    linear-gradient(rgba(12, 18, 31, 0.74), rgba(12, 18, 31, 0.78)),
    url("https://images.unsplash.com/photo-1554224155-6726b3ff858f?auto=format&fit=crop&w=1800&q=80") center/cover;
}

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

.loginPanel {
  width: min(420px, 100%);
  padding: 34px;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
}

.brandMark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  background: #0f766e;
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 22px 0 8px;
  font-size: 28px;
  letter-spacing: 0;
}

p {
  margin: 0;
  color: #64748b;
  font-size: 14px;
}

.loginForm {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

label {
  display: grid;
  gap: 7px;
  font-size: 13px;
  color: #334155;
}

input {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #ffffff;
  color: #111827;
  font: inherit;
}

input:focus {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  border-color: #0f766e;
}

button {
  height: 42px;
  border: 0;
  border-radius: 6px;
  background: #0f766e;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.loginStatus {
  min-height: 20px;
  color: #b42318;
}

.loginStatus.ok {
  color: #166534;
}