:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: #183654;
  background: #c9dfe8;
}

* { box-sizing: border-box; }
body { margin: 0; font-size: 14px; line-height: 1.5; }
button, input { font: inherit; }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
  background-image: linear-gradient(90deg, rgb(16 36 62 / 8%), rgb(16 36 62 / 3%)), url("brand-background.jpg");
  background-position: center;
  background-size: cover;
}

.login-panel {
  width: 440px;
  padding: 38px 40px 30px;
  border: 1px solid rgb(255 255 255 / 85%);
  border-top: 4px solid #78b7dc;
  border-radius: 14px;
  background: rgb(255 255 255 / 96%);
  box-shadow: 0 24px 64px rgb(16 36 62 / 20%), 0 3px 12px rgb(16 36 62 / 5%);
  backdrop-filter: blur(10px);
}

.login-brand { display: flex; align-items: center; gap: 18px; padding-bottom: 28px; border-bottom: 1px solid #e5edf3; }
.login-brand img { display: block; flex: 0 0 auto; width: 86px; height: 61px; object-fit: contain; }
.login-brand h1 { margin: 0; color: #183654; font-size: 27px; font-weight: 700; letter-spacing: .06em; }
.login-brand p { margin: 5px 0 0; color: #6a7f92; font-size: 13px; }

.login-form { display: grid; gap: 20px; margin-top: 27px; }
.login-field { display: grid; gap: 9px; }
.login-field label { color: #344a5f; font-size: 14px; font-weight: 600; }
.login-field input {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid #cbd9e4;
  border-radius: 7px;
  background: #fcfdff;
  color: #183654;
  font-size: 16px;
}
.login-field input:hover { border-color: #94b6ce; }
.login-field input:focus { border-color: #5b9eca; background: #fff; outline: 3px solid rgb(120 183 220 / 20%); outline-offset: 1px; }
.login-submit {
  min-height: 50px;
  margin-top: 5px;
  border: 0;
  border-radius: 7px;
  background: #215a9d;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 5px 12px rgb(33 90 157 / 15%);
}
.login-submit:hover { background: #194c87; }
.login-submit:active { background: #153f70; }
.login-submit:focus-visible { outline: 3px solid #78b7dc; outline-offset: 3px; }
.login-error { padding: 10px 12px; border: 1px solid #edcaca; border-radius: 6px; background: #fff5f5; color: #a93434; font-size: 13px; }
.login-footnote { margin: 23px 0 0; color: #6b8092; font-size: 12px; text-align: center; }