:root {
  color-scheme: light;
  --ink: #10223a;
  --accent: #ff9d2b;
  --panel: rgba(255, 255, 255, 0.88);
  --line: rgba(16, 34, 58, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 157, 43, 0.35), transparent 30%),
    linear-gradient(135deg, #fff7ea 0%, #eff4fb 45%, #f6f8fd 100%);
  color: var(--ink);
  display: grid;
  place-items: center;
}

.login-shell {
  width: min(100%, 960px);
  padding: 24px;
}

.login-card {
  width: min(100%, 430px);
  padding: 32px;
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 80px rgba(16, 34, 58, 0.12);
}

.badge {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 157, 43, 0.14);
  color: #b45e00;
  font-size: 12px;
  letter-spacing: 0.12em;
}

h1 {
  margin: 18px 0 10px;
  font-size: 34px;
  font-family: Georgia, "Times New Roman", serif;
}

p {
  margin: 0 0 24px;
  color: rgba(16, 34, 58, 0.74);
  line-height: 1.7;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
}

label span {
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  font: inherit;
}

button {
  border: 0;
  border-radius: 16px;
  padding: 15px 18px;
  background: linear-gradient(135deg, #ff9d2b, #ffbf69);
  color: #2d1a00;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.error {
  margin-top: 14px;
  min-height: 24px;
  color: #c53030;
  font-size: 14px;
}