:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f3f0e9;
  color: #16211d;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(129, 160, 144, 0.24), transparent 34rem),
    linear-gradient(145deg, #f7f5ef, #e9eee9);
}

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

.login-card {
  width: min(100%, 420px);
  padding: 38px;
  border: 1px solid rgba(38, 62, 52, 0.15);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 24px 70px rgba(27, 45, 37, 0.12);
}

.eyebrow {
  margin: 0 0 12px;
  color: #4e7060;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

h1 { margin: 0; font-size: clamp(28px, 7vw, 38px); line-height: 1.15; }
.intro { margin: 16px 0 28px; color: #607068; line-height: 1.65; }
label { display: block; margin-bottom: 9px; font-size: 14px; font-weight: 700; }

input,
button {
  width: 100%;
  border-radius: 12px;
  font: inherit;
}

input {
  min-height: 50px;
  padding: 0 14px;
  border: 1px solid #b6c2bb;
  background: #fff;
}

input:focus { outline: 3px solid rgba(43, 103, 76, 0.18); border-color: #2b674c; }

button {
  min-height: 50px;
  margin-top: 16px;
  border: 0;
  background: #173f30;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: #225943; }
button:disabled { cursor: wait; opacity: 0.7; }
.message { min-height: 24px; margin: 14px 0 0; color: #9a332d; font-size: 14px; }

.login-footer { margin-top: 16px; text-align: center; font-size: 12px; }
.login-footer a { color: #4e7060; text-underline-offset: 3px; }

@media (max-width: 480px) {
  .login-shell { padding: 16px; }
  .login-card { padding: 28px 22px; border-radius: 18px; }
}