.arche-login {
  --al-accent: #7fe3ff;
  position: fixed;
  inset: 0;
  z-index: 100000;          
  opacity: 0;               
  pointer-events: none;     
  overflow: hidden;
  font-family: "IBM Plex Mono", Consolas, "Microsoft YaHei", monospace;
  color: #e6f1ff;
}

.arche-login.is-open { pointer-events: auto; }


.arche-login.is-idle { display: none; }


body.arche-login-locked { overflow: hidden !important; }

.arche-login__gl {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}


.arche-login__atmos { display: none; }




.arche-login__panel {
  position: absolute;
  left: 0;
  top: 0;
  width: 380px;
  padding: 14px 0 22px;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.arche-login__layerbg {
  position: absolute;
  left: 0; top: 0; width: 0; height: 0;      
  border-radius: var(--al-lb-radius, 24px);
  border: 1px solid var(--al-lb-border, rgba(150, 205, 255, .22));
  background: var(--al-layer-bg, transparent);
  pointer-events: none;
}
.arche-login:not(.has-layerbg) .arche-login__layerbg { display: none; }


.arche-login__panelbg {
  position: absolute;
  left: 0; top: 0; width: 0; height: 0;
  border-radius: var(--al-radius, 16px);
  background: var(--al-bg, rgba(4, 7, 17, .55));
  border: 1px solid var(--al-border, rgba(140, 200, 255, .10));
  backdrop-filter: blur(var(--al-blur, 10px));
  -webkit-backdrop-filter: blur(var(--al-blur, 10px));
  pointer-events: none;
}
.arche-login:not(.has-panelbg) .arche-login__panelbg { display: none; }

.arche-login__field { position: relative; }
.arche-login__field + .arche-login__field { margin-top: 22px; }

.arche-login__field input {
  display: block;
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 5px 0 7px;
  
  color: transparent;
  text-align: center;              
  text-shadow: none;
  font: 15px/1.3 "IBM Plex Mono", Consolas, monospace;
  letter-spacing: .05em;
  caret-color: var(--al-accent);
  user-select: text;
}
.arche-login__field input.arche-login__pass { letter-spacing: .18em; }


.arche-login__line { height: 1px; background: none; }


.arche-login__gap { height: 24px; }



.arche-login__actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  margin-top: 26px;
}

.arche-login__submit {
  display: block;
  width: 72px;
  height: 72px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

@media (max-height: 620px) {
  .arche-login__submit { width: 62px; height: 62px; margin-top: 18px; }
  .arche-login__field + .arche-login__field { margin-top: 14px; }
}


.arche-login:not(.has-gl) .arche-login__line { height: 1px; background: rgba(120, 190, 255, .35); }
.arche-login:not(.has-gl) .arche-login__field + .arche-login__field .arche-login__line::after {
  content: none;
}

@media (prefers-reduced-motion: reduce) {
  .arche-login__panel { will-change: auto; }
}





.arche-login__panel { transition: opacity .45s ease; }

.arche-login.is-boom .arche-login__panel,
.arche-login.is-boom .arche-login__panelbg,
.arche-login.is-boom .arche-login__layerbg {
  opacity: 0;
  pointer-events: none;
}

.arche-login.is-boom .arche-login__panelbg,
.arche-login.is-boom .arche-login__layerbg {
  transition: opacity .8s ease .25s;
}

/* ==================================================================
   登录窗开着的时候，右上角的声音按钮仍然要能点
   （登录层 z-index 是 100000，把 header 的 99 盖住了 → 音乐关不掉）
   ================================================================== */
body.arche-login-locked .Header__container {
  z-index: 100002 !important;
  opacity: 1 !important;
}
body.arche-login-locked .Header__logo,
body.arche-login-locked .Header__nav,
body.arche-login-locked .Header__contact,
body.arche-login-locked .HamburgerIcon__hamburger {
  opacity: 0 !important;
  pointer-events: none !important;
}
body.arche-login-locked .Header__right_controls { gap: 0; }
body.arche-login-locked .SoundToggle__button {
  opacity: 1 !important;
  pointer-events: auto !important;
  background: rgba(8, 14, 20, .5);
  border: 1px solid rgba(140, 200, 255, .28);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .45);
  transition: background .2s ease, border-color .2s ease;
}
body.arche-login-locked .SoundToggle__button:hover {
  background: rgba(24, 48, 66, .72);
  border-color: rgba(160, 220, 255, .5);
}
body.arche-login-locked .SoundToggle__button:active { transform: scale(.94); }