:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #24372e;
  background: #f6f5ef;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 280px; }
.login-shell { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 40px 24px; }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 30px; color: #224c3d; }
.brand svg { width: 35px; height: 35px; }
.brand-name { display: block; font: 700 25px/1.4 "Songti SC", "STSong", Georgia, serif; letter-spacing: 5px; }
.brand-caption { display: block; font-size: 7px; letter-spacing: 1.7px; font-weight: 600; }
.login-card { width: min(100%, 440px); background: #fffefa; border: 1px solid #dedfd4; border-radius: 10px; padding: 35px 36px 36px; box-shadow: 0 12px 36px #354d3410; }
.eyebrow { margin: 0 0 14px; color: #b66c4c; font-size: 8px; font-weight: 600; letter-spacing: 1.8px; }
h1 { margin: 0; font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif; font-size: 31px; font-weight: 500; line-height: 1.5; color: #243f30; }
.intro { color: #8a927e; font-size: 11px; line-height: 1.9; margin: 12px 0 27px; }
label { display: block; color: #627657; font-size: 11px; margin: 18px 0 7px; }
input, button { font: inherit; }
input { width: 100%; border: 1px solid #d9e1cc; border-radius: 5px; color: #415b38; background: #fcfdf6; padding: 11px 12px; min-height: 43px; font-size: 13px; }
input::placeholder { color: #a3af94; font-size: 11px; }
input:focus-visible, button:focus-visible { outline: 2px solid #b66c4c; outline-offset: 3px; }
.account-hint { font-size: 10px; color: #929c84; line-height: 1.8; margin: 11px 0 20px; }
.error-message { margin: 0 0 15px; color: #a45436; font-size: 11px; line-height: 1.9; overflow-wrap: anywhere; }
.error-message:empty { display: none; }
button { width: 100%; border: 1px solid #224c3d; border-radius: 5px; background: #224c3d; color: #fffef5; cursor: pointer; min-height: 44px; padding: 12px 16px; font-size: 12px; display: flex; align-items: center; justify-content: center; gap: 13px; }
button:hover:not(:disabled) { background: #153d2c; }
button:disabled { opacity: .6; cursor: wait; }
button span { font-size: 16px; line-height: 1; }
.footer-note { color: #a0a792; font-size: 9px; margin: 24px 0 0; line-height: 1.8; text-align: center; }
@media (max-width: 480px) {
  .login-shell { padding: 28px 20px; }
  .login-card { padding: 29px 25px; }
  h1 { font-size: 27px; }
  input { font-size: 16px; }
}