:root {
  color-scheme: dark;
  --control-bg: rgba(7, 10, 14, 0.62);
  --control-border: rgba(255, 230, 142, 0.28);
  --control-active: #ffd21f;
  --control-text: #f8f1d7;
  --scene-content-left: 0px;
  --scene-content-top: 0px;
  --scene-content-width: 100%;
  --scene-content-height: 100%;
  --scene-hotspot-left: 0px;
  --scene-hotspot-top: 0px;
  --scene-hotspot-width: 0px;
  --scene-hotspot-height: 0px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 320px;
  min-height: 100%;
  margin: 0;
}

body {
  min-height: 100svh;
  overflow-x: hidden;
  overflow-y: auto;
  background: #07090c;
  color: var(--control-text);
  font-family:
    Inter,
    "Segoe UI",
    "Microsoft YaHei",
    Arial,
    sans-serif;
}

button {
  font: inherit;
}

.site-shell {
  position: relative;
  width: 100%;
  min-height: 100svh;
  height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 72% 36%, rgba(61, 201, 229, 0.28), transparent 34%),
    linear-gradient(110deg, #251f27 0%, #2b3944 48%, #071018 100%);
}

@supports (height: 100dvh) {
  body,
  .site-shell {
    min-height: 100dvh;
  }

  .site-shell {
    height: 100dvh;
  }
}

.site-shell::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -32px;
  background: url("./assets/BG.png") center / cover no-repeat;
  filter: blur(18px) saturate(1.08);
  opacity: 0.48;
  transform: scale(1.04);
  pointer-events: none;
}

.scene-stage,
.scene-vignette,
.title-layer,
.language-art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.scene-stage {
  z-index: 0;
  left: var(--scene-content-left);
  top: var(--scene-content-top);
  right: auto;
  bottom: auto;
  width: var(--scene-content-width);
  height: var(--scene-content-height);
  cursor: grab;
  overflow: visible;
  pointer-events: auto;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.scene-stage.is-dragging {
  cursor: grabbing;
}

.scene-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
  --parallax-x: 0px;
  --parallax-y: 0px;
  --float-x: 0px;
  --float-y: 0px;
  --float-x-alt: 0px;
  --float-y-alt: 0px;
  --float-scale: 1;
  --float-rotate: 0deg;
  --float-rotate-alt: 0deg;
  animation: sceneLayerFloat var(--float-duration, 9s) ease-in-out infinite;
  animation-delay: var(--float-delay, 0s);
  transform:
    translate3d(var(--parallax-x), var(--parallax-y), 0)
    scale(1)
    rotate(0deg);
  will-change: transform;
}

.scene-layer-base {
  z-index: 0;
  --float-x: -8px;
  --float-y: 6px;
  --float-x-alt: 3px;
  --float-y-alt: -2px;
  --float-scale: 1.008;
  --float-duration: 14s;
}

.scene-layer-rune {
  z-index: 1;
  opacity: 0.82;
  --float-x: 10px;
  --float-y: -8px;
  --float-x-alt: -4px;
  --float-y-alt: 3px;
  --float-scale: 1.012;
  --float-rotate: 0.24deg;
  --float-rotate-alt: -0.1deg;
  --float-duration: 16s;
  --float-delay: -4s;
}

.scene-layer-haze {
  z-index: 2;
  opacity: 0.84;
  --float-x: -10px;
  --float-y: -5px;
  --float-x-alt: 4px;
  --float-y-alt: 2px;
  --float-scale: 1.01;
  --float-duration: 13s;
  --float-delay: -2s;
}

.scene-layer-background {
  z-index: 3;
  --float-x: 7px;
  --float-y: -10px;
  --float-x-alt: -3px;
  --float-y-alt: 4px;
  --float-scale: 1.006;
  --float-rotate: -0.16deg;
  --float-rotate-alt: 0.07deg;
  --float-duration: 12s;
}

.scene-layer-midground {
  z-index: 4;
  --float-x: -12px;
  --float-y: 8px;
  --float-x-alt: 5px;
  --float-y-alt: -3px;
  --float-scale: 1.008;
  --float-rotate: 0.18deg;
  --float-rotate-alt: -0.08deg;
  --float-duration: 10.8s;
  --float-delay: -1.7s;
}

.scene-layer-zhongkui {
  z-index: 5;
  --float-x: 12px;
  --float-y: -9px;
  --float-x-alt: -5px;
  --float-y-alt: 4px;
  --float-scale: 1.01;
  --float-rotate: -0.18deg;
  --float-rotate-alt: 0.08deg;
  --float-duration: 9.6s;
  --float-delay: -3s;
}

.scene-layer-foreground {
  z-index: 6;
  --float-x: -15px;
  --float-y: 10px;
  --float-x-alt: 6px;
  --float-y-alt: -4px;
  --float-scale: 1.014;
  --float-rotate: 0.2deg;
  --float-rotate-alt: -0.09deg;
  --float-duration: 8.8s;
  --float-delay: -1s;
}

.scene-links {
  position: absolute;
  z-index: 11;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.scene-hotspot {
  position: absolute;
  display: block;
  left: var(--scene-hotspot-left);
  top: var(--scene-hotspot-top);
  width: var(--scene-hotspot-width);
  height: var(--scene-hotspot-height);
  border-radius: 999px;
  pointer-events: auto;
  cursor: pointer;
  text-decoration: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.scene-hotspot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.scene-hotspot:focus-visible {
  outline: 2px solid rgba(255, 229, 107, 0.95);
  outline-offset: 4px;
  background: rgba(255, 229, 107, 0.12);
}

.scene-hotspot:hover {
  background: rgba(255, 229, 107, 0.08);
}

.taiko-hotspot {
  --scene-hotspot-left: 90%;
  --scene-hotspot-top: 91.5%;
  --scene-hotspot-width: 8.3%;
  --scene-hotspot-height: 4.9%;
}

.steam-hotspot {
  --scene-hotspot-left: 80.3%;
  --scene-hotspot-top: 91.5%;
  --scene-hotspot-width: 8.7%;
  --scene-hotspot-height: 4.9%;
}

.logo-hotspot {
  --scene-hotspot-left: 3.2%;
  --scene-hotspot-top: 9.4%;
  --scene-hotspot-width: 47.8%;
  --scene-hotspot-height: 42.4%;
  border-radius: 8px;
}

.logo-hotspot:hover {
  background: transparent;
}

.scene-vignette {
  z-index: 7;
  pointer-events: none;
}

.site-header {
  position: fixed;
  z-index: 12;
  top: max(18px, env(safe-area-inset-top));
  left: max(18px, env(safe-area-inset-left));
  right: max(18px, env(safe-area-inset-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  pointer-events: none;
}

.header-primary {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  pointer-events: auto;
}

.site-name {
  min-width: 0;
  color: rgba(255, 241, 190, 0.82);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.72);
  white-space: nowrap;
}

.localized-text {
  display: none;
}

html[data-lang="zh"] .localized-text[data-lang="zh"],
html[data-lang="en"] .localized-text[data-lang="en"] {
  display: inline;
}

.social-menu {
  position: relative;
  flex: 0 0 auto;
}

.social-menu-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: rgba(7, 10, 14, 0.54);
  color: var(--control-text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  transition:
    border-color 180ms ease,
    background-color 180ms ease,
    transform 180ms ease;
}

.social-menu-button:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 230, 142, 0.42);
  background: rgba(12, 16, 22, 0.7);
}

.social-menu-button:focus-visible {
  outline: 2px solid #ffe56b;
  outline-offset: 3px;
}

.social-menu-caret {
  width: 0;
  height: 0;
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  border-top: 5px solid currentColor;
  transform-origin: center;
  transition: transform 180ms ease;
}

.social-menu-button[aria-expanded="true"] .social-menu-caret {
  transform: rotate(180deg);
}

.social-menu-list {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: min(218px, calc(100vw - 36px));
  padding: 6px;
  border: 1px solid rgba(255, 230, 142, 0.3);
  border-radius: 8px;
  background: rgba(7, 10, 14, 0.84);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.42);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  backdrop-filter: blur(18px);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.social-menu.is-open .social-menu-list {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.social-menu-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 36px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--control-text);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
}

.social-menu-link[href]:hover,
.social-menu-link[href]:focus-visible {
  background: rgba(255, 210, 31, 0.16);
  color: #fff5c7;
}

.social-menu-link:focus-visible {
  outline: 2px solid #ffe56b;
  outline-offset: 2px;
}

.social-menu-link.is-pending {
  color: rgba(248, 241, 215, 0.56);
  cursor: default;
}

.language-switch {
  display: inline-flex;
  flex: 0 0 auto;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: var(--control-bg);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.32);
  pointer-events: auto;
  backdrop-filter: blur(14px);
}

.language-button {
  min-width: 44px;
  min-height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--control-text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.language-button:hover {
  transform: translateY(-1px);
}

.language-button:focus-visible {
  outline: 2px solid #ffe56b;
  outline-offset: 3px;
}

.language-button.is-active {
  background: var(--control-active);
  color: #171000;
}

.title-layer {
  z-index: 8;
  pointer-events: none;
}

.language-art {
  max-width: 100%;
  max-height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 420ms ease;
}

.language-art.is-active {
  opacity: 1;
}

.logo-art {
  object-position: left top;
  transform: translate3d(-1.2%, 1%, 0) scale(0.992) rotate(-0.28deg);
  transform-origin: center;
  filter:
    drop-shadow(0 18px 36px rgba(0, 0, 0, 0.44))
    drop-shadow(0 0 28px rgba(255, 204, 42, 0.2));
  transition:
    opacity 420ms ease,
    transform 620ms ease,
    filter 420ms ease;
}

.logo-art.is-active {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(0.992) rotate(0deg);
  animation: logoFloat 6.8s ease-in-out infinite;
}

.logo-art[data-lang="en"].is-active {
  animation-duration: 7.2s;
}

.soon-art {
  object-position: 109% bottom;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.36));
}

.asset-warning {
  position: fixed;
  z-index: 13;
  left: max(18px, env(safe-area-inset-left));
  bottom: max(18px, env(safe-area-inset-bottom));
  display: none;
  max-width: min(520px, calc(100vw - 36px));
  margin: 0;
  padding: 10px 12px;
  border: 1px solid rgba(255, 221, 87, 0.36);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.68);
  color: #fff2b5;
  font-size: 13px;
  line-height: 1.55;
  backdrop-filter: blur(10px);
}

.has-missing-assets .asset-warning {
  display: block;
}

@keyframes sceneLayerFloat {
  0%,
  100% {
    transform:
      translate3d(var(--parallax-x), var(--parallax-y), 0)
      scale(1)
      rotate(0deg);
  }

  43% {
    transform:
      translate3d(
        calc(var(--parallax-x) + var(--float-x)),
        calc(var(--parallax-y) + var(--float-y)),
        0
      )
      scale(var(--float-scale))
      rotate(var(--float-rotate));
  }

  73% {
    transform:
      translate3d(
        calc(var(--parallax-x) + var(--float-x-alt)),
        calc(var(--parallax-y) + var(--float-y-alt)),
        0
      )
      scale(1.002)
      rotate(var(--float-rotate-alt));
  }
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(0.992) rotate(0deg);
    filter:
      drop-shadow(0 18px 36px rgba(0, 0, 0, 0.44))
      drop-shadow(0 0 28px rgba(255, 204, 42, 0.2));
  }

  45% {
    transform: translate3d(0.42%, -0.64%, 0) scale(0.998) rotate(-0.18deg);
    filter:
      drop-shadow(0 24px 42px rgba(0, 0, 0, 0.48))
      drop-shadow(0 0 34px rgba(255, 214, 62, 0.26));
  }

  72% {
    transform: translate3d(-0.22%, 0.36%, 0) scale(0.996) rotate(0.12deg);
  }
}

@media (max-width: 760px) {
  .site-header {
    top: max(12px, env(safe-area-inset-top));
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    gap: 10px;
  }

  .header-primary {
    max-width: calc(100% - 94px);
    gap: 8px;
  }

  .site-name {
    font-size: 12px;
  }

  .social-menu-button {
    min-height: 34px;
    padding: 0 10px;
    font-size: 12px;
  }

  .social-menu-list {
    width: min(198px, calc(100vw - 24px));
  }

  .social-menu-link {
    min-height: 34px;
    font-size: 12px;
  }

  .language-button {
    min-width: 40px;
    min-height: 34px;
    font-size: 13px;
  }

  .scene-layer {
    object-position: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}