:root {
  --bg: #f5f2e9;
  --panel: #ffffff;
  --line: #d0d5dd;
  --text: #111827;
  --muted: #667085;
  --accent: #0f766e;
  --danger: #b42318;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

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

.login-card {
  width: min(420px, 100%);
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  padding: 28px;
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.08);
}

.mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-size: 22px;
  line-height: 30px;
}

p {
  margin: 6px 0 22px;
  color: var(--muted);
  font-size: 14px;
}

form {
  display: grid;
  gap: 14px;
}

label span {
  display: block;
  margin-bottom: 5px;
  color: #344054;
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 40px;
  border: 1px solid #b8c1cc;
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
}

.btn {
  min-height: 40px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.btn:disabled {
  cursor: wait;
  opacity: 0.7;
}

.message {
  min-height: 20px;
  color: var(--danger);
  font-size: 13px;
}