:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #667085;
  --line: #d7dce5;
  --surface: #ffffff;
  --canvas: #f3f6fa;
  --primary: #1769e0;
  --primary-hover: #0f56be;
  --accent: #0b7a75;
  --danger: #b42318;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

.auth-shell {
  width: min(920px, calc(100vw - 32px));
  min-height: 510px;
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(360px, 1.1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 48px rgba(23, 32, 51, 0.12);
}

.auth-brand {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 56px 44px;
  background: #123044;
  color: #ffffff;
}

.brand-mark {
  display: grid;
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  place-items: center;
  border: 2px solid #45c1b8;
  border-radius: 6px;
  color: #8be1da;
  font-size: 17px;
  font-weight: 700;
}

.eyebrow, .section-label {
  margin: 3px 0 10px;
  color: #8be1da;
  font-size: 13px;
  font-weight: 700;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 18px; font-size: 34px; letter-spacing: 0; }
h2 { margin-bottom: 28px; font-size: 24px; letter-spacing: 0; }
.brand-copy { max-width: 230px; color: #c6d4dc; line-height: 1.8; }

.auth-panel { min-width: 0; padding: 54px 64px; }
.auth-panel .section-label { color: var(--accent); }

form { display: grid; gap: 10px; }
label { margin-top: 8px; font-size: 14px; font-weight: 700; }
input, button { font: inherit; }
input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #ffffff;
}
input:focus { outline: 2px solid rgba(23, 105, 224, 0.2); border-color: var(--primary); }

.password-field { position: relative; }
.password-field input { padding-right: 66px; }
.icon-button {
  position: absolute;
  top: 5px;
  right: 5px;
  height: 36px;
  padding: 0 10px;
  border: 0;
  color: var(--primary);
  background: transparent;
  cursor: pointer;
}

.hint { margin: 4px 0 0; color: var(--muted); font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
.message { min-height: 24px; margin: 4px 0 0; color: var(--danger); font-size: 14px; }
.primary {
  min-height: 46px;
  border: 0;
  border-radius: 6px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}
.primary:hover { background: var(--primary-hover); }
.primary:disabled { opacity: 0.65; cursor: wait; }

.auth-site-footer {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
  padding: 14px 24px 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.auth-site-footer a { color: inherit; text-decoration: none; }
.auth-site-footer a:hover { color: var(--primary); text-decoration: underline; }

@media (max-width: 720px) {
  body { place-items: start center; }
  .auth-shell { grid-template-columns: 1fr; margin: 16px 0; }
  .auth-brand { padding: 28px 24px; }
  .auth-brand .brand-copy { display: none; }
  .auth-panel { padding: 32px 24px 38px; }
  form, .password-field, input, .primary { min-width: 0; max-width: 100%; }
}