:root {
  color-scheme: dark;
  --bg: #06101a;
  --panel: rgba(10, 18, 28, 0.92);
  --panel-border: rgba(141, 179, 212, 0.16);
  --text: #eaf3ff;
  --muted: rgba(234, 243, 255, 0.68);
  --accent: #72c7ff;
  --accent-strong: #4da8ff;
  --danger: #ff8fa3;
  --radius: 24px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: Inter, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(114, 199, 255, 0.16), transparent 34%),
    radial-gradient(circle at 80% 15%, rgba(109, 234, 185, 0.12), transparent 24%),
    linear-gradient(180deg, #06101a 0%, #071421 100%);
}

body { min-height: 100vh; }

.login-bg {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.04), transparent 40%),
    radial-gradient(circle at 70% 25%, rgba(255,255,255,0.06), transparent 22%);
  pointer-events: none;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.login-card {
  width: min(560px, 100%);
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  background: linear-gradient(180deg, rgba(12, 20, 31, 0.98), rgba(8, 15, 24, 0.96));
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.88), transparent 22%),
    linear-gradient(180deg, #8ec7ff, #5f96ff);
  box-shadow: 0 16px 30px rgba(95, 150, 255, 0.34);
}

.login-brand .brand-mark {
  flex: 0 0 auto;
}

.login-brand .eyebrow {
  margin-bottom: 8px;
}

.eyebrow {
  margin: 0 0 14px;
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.08;
}

.lead {
  margin: 14px 0 28px;
  color: var(--muted);
  line-height: 1.7;
}

.panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
}

.panel h2 {
  margin: 0 0 4px;
  font-size: 20px;
}

.form-message {
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 143, 163, 0.28);
  background: rgba(255, 143, 163, 0.08);
  color: #ffc7d1;
  font-size: 13px;
  line-height: 1.55;
}

.form-message-info {
  border-color: rgba(114, 199, 255, 0.28);
  background: rgba(114, 199, 255, 0.08);
  color: #b9e3ff;
}

.panel label {
  display: grid;
  gap: 8px;
}

.panel span {
  font-size: 13px;
  color: var(--muted);
}

.panel input,
.panel select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(141, 179, 212, 0.22);
  background: rgba(4, 10, 17, 0.86);
  color: var(--text);
  outline: none;
}

.panel input:focus,
.panel select:focus {
  border-color: rgba(114, 199, 255, 0.7);
  box-shadow: 0 0 0 4px rgba(114, 199, 255, 0.08);
}

.switch-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.quick-login-box {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid rgba(141, 179, 212, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
}

.quick-login-box p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.btn {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font-weight: 700;
  color: #05111e;
  background: rgba(255,255,255,0.12);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.hidden { display: none; }

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 640px) {
  .login-card { padding: 28px; }
  h1 { font-size: 28px; }
  .footer { flex-direction: column; }
}

/* 2026-05 unified product polish. */
:root {
  --bg: #050914;
  --panel: rgba(12, 20, 34, 0.9);
  --panel-border: rgba(154, 169, 189, 0.16);
  --text: #f2f7ff;
  --muted: #9aa9bd;
  --accent: #8dd7ff;
  --accent-strong: #3f8cff;
  --gold: #f6c96f;
}

html,
body {
  font-family:
    "HarmonyOS Sans SC",
    "MiSans",
    "PingFang SC",
    "Microsoft YaHei UI",
    "Noto Sans SC",
    sans-serif;
  background:
    radial-gradient(circle at 15% 0%, rgba(141, 215, 255, 0.18), transparent 32rem),
    radial-gradient(circle at 82% 12%, rgba(246, 201, 111, 0.13), transparent 28rem),
    linear-gradient(180deg, #050914 0%, #08111d 100%);
}

.login-bg {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 76%);
}

.login-shell {
  padding: clamp(18px, 3vw, 48px);
}

.login-card {
  width: min(620px, 100%);
  padding: clamp(30px, 4vw, 52px);
  border-radius: 28px;
  background:
    radial-gradient(circle at 16% 0%, rgba(246, 201, 111, 0.12), transparent 20rem),
    linear-gradient(145deg, rgba(14, 25, 43, 0.96), rgba(7, 13, 24, 0.98));
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.045);
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.92), transparent 18%),
    linear-gradient(145deg, #f6c96f, #8dd7ff 58%, #3f8cff);
  box-shadow: 0 16px 36px rgba(63, 140, 255, 0.28);
}

h1 {
  font-size: clamp(30px, 4vw, 42px);
  letter-spacing: -0.04em;
}

.panel {
  border-color: rgba(154, 169, 189, 0.14);
  background: rgba(3, 8, 16, 0.42);
}

.panel input,
.panel select {
  border-radius: 14px;
  border-color: rgba(154, 169, 189, 0.18);
  background: rgba(3, 8, 16, 0.72);
}

.btn {
  min-height: 46px;
  border-radius: 14px;
  color: #f2f7ff;
}

.btn-primary {
  color: #06101c;
  background: linear-gradient(135deg, #ffe09a, var(--accent) 62%, var(--accent-strong));
  box-shadow: 0 14px 30px rgba(63, 140, 255, 0.22);
}

.btn:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
  box-shadow: none;
}