:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #203047;
  background: #f3f6fb;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
body { min-width: 320px; min-height: 100vh; margin: 0; }
button, input { font: inherit; }
.login-shell { display: grid; min-height: 100vh; place-items: center; padding: 28px 18px; }
.login-card {
  width: min(100%, 430px); padding: 34px;
  border: 1px solid #e3eaf3; border-radius: 22px; background: #fff;
  box-shadow: 0 22px 60px #263c5c12;
}
.login-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 32px; color: #455b78; font-size: 14px; font-weight: 650; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border-radius: 12px; color: #fff; background: #3269c8; font-size: 11px; letter-spacing: .04em; }
.eyebrow { margin: 0 0 7px; color: #6480a4; font-size: 12px; font-weight: 650; letter-spacing: .04em; }
h1 { margin: 0; font-size: 26px; line-height: 1.3; }
.login-intro { margin: 8px 0 24px; color: #718096; font-size: 14px; line-height: 1.6; }
.login-form { display: grid; gap: 9px; }
.login-form label { margin-top: 8px; color: #52647d; font-size: 13px; font-weight: 600; }
.login-form input { width: 100%; min-height: 46px; padding: 0 13px; border: 1px solid #dbe3ed; border-radius: 11px; outline: none; color: #203047; background: #fbfcfe; }
.login-form input:focus { border-color: #79a0e4; box-shadow: 0 0 0 3px #3269c81a; }
.login-form button { min-height: 46px; margin-top: 12px; border: 0; border-radius: 11px; color: #fff; background: #3269c8; font-weight: 650; cursor: pointer; }
.login-form button:disabled { opacity: .65; cursor: wait; }
.login-error { margin: 3px 0 0; color: #b53e3e; font-size: 13px; line-height: 1.5; }
.login-footnote { margin: 22px 0 0; color: #8794a6; font-size: 12px; text-align: center; }

@media (max-width: 420px) {
  .login-card { padding: 27px 22px; border-radius: 18px; }
  .login-brand { margin-bottom: 27px; }
}

/* 登录入口使用与业务页一致的顶栏与表单尺度。 */
:root { color: #1c2024; background: #f5f6f8; }
.login-brand { min-height: 64px; margin: 0; padding: 12px max(24px, calc((100vw - 1120px) / 2)); color: #cbd5e1; background: #0f172a; }
.brand-mark { width: 34px; height: 34px; border-radius: 8px; background: #2563eb; }
.login-brand h1 { margin: 0 0 0 12px; padding-left: 20px; border-left: 1px solid #64748b; color: #fff; font-size: 24px; line-height: 32px; }
.login-shell { min-height: calc(100vh - 64px); align-content: start; padding: 64px 24px; }
.login-card { border-color: #e3e6ea; border-radius: 12px; box-shadow: none; padding: 32px; }
.login-intro { margin: 0 0 24px; color: #4b5563; }
.login-form label { color: #374151; font-size: 14px; }
.login-form input,.login-form button { min-height: 44px; border-radius: 8px; font-size: 16px; }
.login-form button { background: #2563eb; }
.login-footnote { color: #6b7280; font-size: 13px; text-align: left; }
@media (max-width: 600px) { .login-brand { padding: 12px 16px; flex-wrap: wrap; } .login-shell { padding: 24px 16px; } .login-card { padding: 20px 16px; } .login-intro { font-size: 16px; } }