:root {
  --login-ink: #14110f;
  --login-ink-soft: #3a342f;
  --login-mist: #f3eee7;
  --login-paper: rgba(255, 252, 248, 0.92);
  --login-line: rgba(20, 17, 15, 0.12);
  --login-accent: #c23a2b;
  --login-accent-deep: #9a2c21;
  --login-glow: rgba(194, 58, 43, 0.18);
  --login-font-display: "Fraunces", "Noto Serif SC", "Songti SC", serif;
  --login-font-body: "Manrope", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.h5-login {
  --login-pad: max(20px, env(safe-area-inset-top));
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  padding: var(--login-pad) 22px max(28px, env(safe-area-inset-bottom));
  font-family: var(--login-font-body);
  color: var(--login-ink);
  background:
    radial-gradient(120% 80% at 12% -10%, rgba(194, 58, 43, 0.22), transparent 52%),
    radial-gradient(90% 70% at 100% 8%, rgba(40, 60, 90, 0.14), transparent 48%),
    linear-gradient(165deg, #efe7dc 0%, #f7f2eb 42%, #e8e2d8 100%);
}

.h5-login::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 17, 15, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 17, 15, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 70%);
  pointer-events: none;
}

.h5-login::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -80px;
  top: 12%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--login-glow), transparent 68%);
  animation: loginOrb 8s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes loginOrb {
  from { transform: translate3d(0, 0, 0) scale(1); opacity: .9; }
  to { transform: translate3d(-18px, 24px, 0) scale(1.08); opacity: 1; }
}

.login-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-hero {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 0 4px 18px;
  animation: loginRise .7s cubic-bezier(.22, 1, .36, 1) both;
}

.login-brand {
  font-family: var(--login-font-display);
  font-size: clamp(2.4rem, 11vw, 3.4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 14px;
  color: var(--login-ink);
}

.login-brand span {
  display: inline-block;
  border-bottom: 3px solid var(--login-accent);
  padding-bottom: 2px;
}

.login-tagline {
  max-width: 16em;
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--login-ink-soft);
  opacity: .88;
}

.login-panel {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  padding: 22px 18px 18px;
  border-radius: 22px 22px 18px 18px;
  background: var(--login-paper);
  border: 1px solid rgba(255,255,255,.65);
  box-shadow:
    0 1px 0 rgba(255,255,255,.7) inset,
    0 18px 40px rgba(40, 28, 18, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: loginRise .75s .08s cubic-bezier(.22, 1, .36, 1) both;
}

@keyframes loginRise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-panel-title {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--login-ink-soft);
}

.login-alert {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(194, 58, 43, 0.08);
  color: var(--login-accent-deep);
  font-size: 13px;
  line-height: 1.4;
}

.login-field {
  margin-bottom: 12px;
}

.login-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--login-ink-soft);
}

.login-field input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--login-line);
  border-radius: 14px;
  background: rgba(255,255,255,.82);
  color: var(--login-ink);
  font-size: 16px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.login-field input::placeholder {
  color: rgba(58, 52, 47, 0.42);
}

.login-field input:focus {
  border-color: rgba(194, 58, 43, 0.55);
  box-shadow: 0 0 0 4px var(--login-glow);
  background: #fff;
}

.login-submit {
  width: 100%;
  height: 50px;
  margin-top: 8px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--login-accent) 0%, var(--login-accent-deep) 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(194, 58, 43, 0.28);
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}

.login-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(194, 58, 43, 0.34);
}

.login-submit:active {
  transform: translateY(1px);
}

.login-submit:disabled {
  opacity: .65;
  cursor: wait;
  transform: none;
}

.login-hint {
  margin: 14px 2px 0;
  font-size: 12px;
  line-height: 1.45;
  color: rgba(58, 52, 47, 0.55);
  text-align: center;
}

@media (min-width: 720px) {
  .h5-login {
    justify-content: center;
    align-items: center;
    padding: 40px;
  }
  .login-shell {
    width: min(920px, 100%);
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 36px;
    align-items: center;
  }
  .login-hero {
    padding: 0 12px;
  }
  .login-panel {
    margin: 0;
  }
}