:root {
  --login-ink: #102a43;
  --login-copy: #47657e;
  --login-blue: #1267b2;
  --login-blue-deep: #0b5796;
  --login-cyan: #22a9ca;
  --login-line: rgba(92, 157, 207, .26);
  font-family: "DengXian", "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--login-ink);
  background: #eaf6ff;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(122deg, transparent 16%, rgba(255, 255, 255, .72) 17%, transparent 34%),
    linear-gradient(138deg, #d8efff 0%, #f6fbff 48%, #dcefff 100%);
}

button, input { font: inherit; }
a { color: inherit; text-decoration: none; }

.login-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(380px, .88fr);
  width: min(1120px, calc(100% - 48px));
  min-height: min(720px, calc(100vh - 64px));
  margin: 32px auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 18px;
  background: rgba(255, 255, 255, .66);
  box-shadow: 0 38px 100px rgba(37, 105, 153, .16), inset 0 1px 0 rgba(255, 255, 255, .98);
  backdrop-filter: blur(22px) saturate(135%);
}

.login-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: clamp(34px, 5vw, 64px);
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 18%, rgba(87, 203, 231, .34), transparent 28%),
    linear-gradient(142deg, #0b355b 0%, #0f5a8c 56%, #0c7894 100%);
  color: #fff;
}

.login-brand::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(145deg, #000, transparent 82%);
  pointer-events: none;
}

.login-brand::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -150px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 50%;
  box-shadow: 0 0 0 48px rgba(255, 255, 255, .035), 0 0 0 104px rgba(255, 255, 255, .025);
}

.login-logo, .login-intro, .login-signal { position: relative; z-index: 1; }
.login-logo { display: inline-flex; align-items: center; gap: 12px; width: fit-content; }
.login-logo-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .28), rgba(255, 255, 255, .1));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4);
}
.login-logo-mark svg { width: 21px; height: 21px; }
.login-logo > span:last-child { display: grid; gap: 2px; }
.login-logo strong { font-size: 17px; font-weight: 650; }
.login-logo small { color: rgba(255, 255, 255, .64); font-size: 9px; letter-spacing: .12em; }

.login-intro { max-width: 560px; padding: 60px 0; }
.login-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding: 4px 9px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 5px;
  background: rgba(255, 255, 255, .08);
  color: rgba(255, 255, 255, .72);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
}
.login-intro h1 {
  margin: 20px 0 18px;
  font-size: clamp(38px, 4.5vw, 58px);
  font-weight: 620;
  line-height: 1.18;
  letter-spacing: 0;
}
.login-intro p { max-width: 500px; margin: 0; color: rgba(239, 249, 255, .72); font-size: 14px; line-height: 1.9; }

.login-signal { display: flex; flex-wrap: wrap; gap: 8px; }
.login-signal span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 6px;
  background: rgba(255, 255, 255, .07);
  color: rgba(255, 255, 255, .72);
  font-size: 10px;
}
.login-signal svg { width: 13px; height: 13px; color: #82e4ef; }

.login-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  min-width: 0;
  padding: clamp(30px, 4.6vw, 58px);
  background: linear-gradient(154deg, rgba(255, 255, 255, .96), rgba(242, 251, 255, .86));
}
.login-panel-head { display: flex; align-items: center; gap: 13px; margin-bottom: 31px; }
.login-panel-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(47, 150, 203, .28);
  border-radius: 12px;
  background: linear-gradient(145deg, #edf9ff, #d8f2ff);
  color: #1267b2;
  box-shadow: 0 10px 24px rgba(32, 114, 167, .1), inset 0 1px 0 #fff;
}
.login-panel-icon svg { width: 21px; height: 21px; }
.login-panel-head div { display: grid; gap: 3px; }
.login-panel-head small { color: #5d7990; font-size: 9px; font-weight: 700; letter-spacing: .11em; }
.login-panel-head h2 { margin: 0; color: var(--login-ink); font-size: 25px; font-weight: 650; letter-spacing: 0; }

form { display: grid; gap: 17px; }
.login-field { display: grid; gap: 7px; }
.login-field > span { color: #395b75; font-size: 12px; font-weight: 650; }
.login-field input {
  width: 100%;
  height: 48px;
  min-width: 0;
  padding: 0 13px;
  border: 1px solid rgba(99, 161, 205, .34);
  border-radius: 9px;
  background: rgba(255, 255, 255, .92);
  color: #113957;
  font-size: 14px;
  outline: none;
  box-shadow: inset 0 1px 0 #fff, 0 5px 16px rgba(44, 111, 154, .04);
  transition: border-color .16s ease, box-shadow .16s ease;
}
.login-field input:focus { border-color: #2789c3; box-shadow: 0 0 0 3px rgba(39, 137, 195, .14), inset 0 1px 0 #fff; }
.login-password { position: relative; }
.login-password input { padding-right: 49px; }
.login-password button {
  position: absolute;
  top: 50%;
  right: 8px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #55748c;
  cursor: pointer;
  transform: translateY(-50%);
}
.login-password button:hover { background: #eaf6fd; color: #1267b2; }
.login-password svg { width: 17px; height: 17px; }

.login-error { margin: 0; padding: 10px 12px; border: 1px solid rgba(190, 65, 65, .22); border-radius: 7px; background: #fff1f1; color: #9d2d2d; font-size: 12px; line-height: 1.55; }
.login-submit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 49px;
  margin-top: 4px;
  padding: 0 15px 0 18px;
  border: 1px solid rgba(9, 77, 134, .24);
  border-radius: 9px;
  background: linear-gradient(180deg, #247fc7, #1267b2);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  box-shadow: 0 13px 27px rgba(22, 100, 170, .22), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.login-submit:hover { background: linear-gradient(180deg, #1c70b1, var(--login-blue-deep)); }
.login-submit:disabled { cursor: wait; opacity: .72; }
.login-submit svg { width: 18px; height: 18px; }
.login-help { margin: 20px 0 0; color: #668196; font-size: 10.5px; line-height: 1.7; }
.login-help code { padding: 2px 4px; border-radius: 4px; background: #eaf5fc; color: #315f7e; overflow-wrap: anywhere; }
.login-back { display: inline-flex; align-items: center; gap: 6px; width: fit-content; margin-top: 22px; color: #1767a0; font-size: 11.5px; font-weight: 600; }
.login-back svg { width: 14px; height: 14px; }

@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; width: calc(100% - 28px); min-height: 0; margin: 14px auto; border-radius: 14px; }
  .login-brand { min-height: 330px; padding: 28px 24px; }
  .login-intro { padding: 36px 0 26px; }
  .login-intro h1 { font-size: clamp(31px, 9vw, 43px); }
  .login-panel { padding: 30px 24px 34px; }
}

@media (max-width: 420px) {
  .login-shell { width: calc(100% - 20px); margin: 10px auto; }
  .login-brand { min-height: 290px; padding: 22px 20px; }
  .login-intro { padding: 30px 0 22px; }
  .login-intro p { font-size: 12.5px; }
  .login-signal span { font-size: 9.5px; }
  .login-panel { padding: 26px 20px 30px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}