:root {
  color-scheme: light;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #17110d;
  background: #f5efe2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    linear-gradient(rgba(184, 134, 47, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 134, 47, 0.08) 1px, transparent 1px),
    #f5efe2;
  background-size: 48px 48px;
}

button, input { font: inherit; }

.login-shell {
  width: min(860px, calc(100vw - 32px));
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(340px, 1.1fr);
  overflow: hidden;
  border: 1px solid rgba(184, 134, 47, 0.3);
  background: #fffdfa;
  box-shadow: 0 24px 64px rgba(55, 38, 25, 0.14);
}

.login-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 56px;
  color: #fffdfa;
  background: #120b08;
}

.login-brand img {
  width: 132px;
  height: 132px;
  object-fit: contain;
  padding: 10px;
  background: #fffdfa;
  border-radius: 8px;
}

.login-brand p {
  margin: 28px 0 5px;
  color: #d7b570;
  font-size: 12px;
  letter-spacing: 0;
}

.login-brand h1 { margin: 0; font-size: 28px; letter-spacing: 0; }
.login-brand span { margin-top: 12px; color: rgba(255, 253, 250, 0.66); font-size: 14px; }

.login-panel {
  display: grid;
  align-items: center;
  padding: 56px 64px;
}

.login-panel form { display: grid; gap: 20px; }
.login-heading p { margin: 0 0 5px; color: #8b7768; font-size: 13px; }
.login-heading h2 { margin: 0; font-size: 30px; letter-spacing: 0; }

label { display: grid; gap: 8px; color: #6e5f54; font-size: 13px; font-weight: 600; }
input {
  width: 100%;
  height: 46px;
  padding: 0 13px;
  border: 1px solid #d9c8ad;
  border-radius: 6px;
  outline: none;
  color: #17110d;
  background: #fff;
}
input:focus { border-color: #b71f2a; box-shadow: 0 0 0 3px rgba(183, 31, 42, 0.1); }

button {
  height: 46px;
  border: 0;
  border-radius: 6px;
  color: white;
  background: #b71f2a;
  cursor: pointer;
  font-weight: 700;
}
button:disabled { opacity: 0.6; cursor: wait; }
.change-note, .form-message { margin: 0; font-size: 13px; line-height: 1.6; }
.change-note { color: #796a5e; }
.form-message.error { color: #a51620; }

@media (max-width: 720px) {
  body { place-items: stretch; }
  .login-shell { width: 100%; min-height: 100vh; grid-template-columns: 1fr; }
  .login-brand { padding: 28px 28px 24px; justify-content: flex-start; }
  .login-brand img { width: 82px; height: 82px; }
  .login-brand p { margin-top: 18px; }
  .login-brand h1 { font-size: 23px; }
  .login-panel { padding: 34px 28px 48px; align-items: start; }
}