:root {
  --space: #070b12;
  --light: rgba(255, 255, 255, 0.92);
  --blue: #67c9f4;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rush: cubic-bezier(0.16, 0.98, 0.22, 1);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  color: var(--light);
  background: #54baf3;
  cursor: default;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

button {
  border: 0;
  font: inherit;
  cursor: default;
}

.portal {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  padding: 0;
  isolation: isolate;
  background: #54baf3;
  cursor: default;
}

.portal-hero {
  --portal-speed: 2.9s;
  --portal-stage-size: max(100vw, 100svh);
  position: relative;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 100vw;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  transition: transform 900ms var(--rush), opacity 760ms ease, filter 760ms ease;
  will-change: transform, opacity, filter;
}

.portal-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
}

.portal-hero:hover {
  --portal-speed: 2.45s;
}

.portal-hero[data-fit="cover"] {
  --portal-stage-size: max(100vw, 100svh);
}

.portal-hero[data-fit="contain"] {
  --portal-stage-size: min(100vw, 100svh);
  background: #54baf3;
}

.portal-stage {
  --pointer-x: 50%;
  --pointer-y: 50%;
  --tilt-x: 0;
  --tilt-y: 0;
  --chopstick-angle: 0deg;
  --chopstick-reach: 1;
  --hand-layer-scale: 1;
  --left-hand-offset-x: 0%;
  --left-hand-offset-y: 0%;
  --right-hand-offset-x: 0%;
  --right-hand-offset-y: 0%;
  position: relative;
  z-index: 1;
  width: var(--portal-stage-size);
  aspect-ratio: 1 / 1;
  overflow: hidden;
  isolation: isolate;
  flex: none;
  transition: opacity 0.58s ease, filter 0.58s ease, transform 0.58s var(--rush);
  will-change: opacity, filter, transform;
  cursor: default;
}

.portal-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: url("../assets/portal/portal-bg.webp");
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
  transform-origin: var(--zoom-origin-x, 50%) var(--zoom-origin-y, 50%);
  transition: transform 280ms var(--ease), filter 280ms ease, opacity 260ms ease;
  will-change: transform, opacity, filter;
}

.portal-fallback,
.portal-layer-wrap,
.portal-layer,
.portal-fallback img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.portal-fallback,
.portal-layer-wrap {
  pointer-events: none;
}

.portal-layer,
.portal-fallback img {
  object-fit: cover;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
  will-change: transform, opacity;
}

.portal-fallback {
  z-index: 1;
  opacity: 0;
}

.portal-left-hand-earth {
  z-index: 7;
  transform-origin: 43% 69%;
  transform:
    translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
    scale(var(--hand-layer-scale));
  animation: portalBowlSway var(--portal-speed) ease-in-out infinite;
  transition: transform 260ms var(--ease), filter 260ms ease;
  will-change: transform;
}

.portal-left-hand-earth.is-spinning {
  animation: portalEarthPop 640ms var(--rush) both, portalBowlSway var(--portal-speed) ease-in-out 640ms infinite;
}

.portal-right-hand-wrap {
  z-index: 9;
  transform-origin: 78% 34%;
  animation: portalChopstickBreath 2.8s ease-in-out infinite;
  transform:
    translate3d(var(--right-hand-offset-x), var(--right-hand-offset-y), 0)
    rotate(var(--chopstick-angle))
    scale(var(--hand-layer-scale))
    scaleX(var(--chopstick-reach));
  transition: filter 180ms ease;
  will-change: transform;
}

.portal-right-hand {
  transform-origin: 78% 34%;
  filter: drop-shadow(0 12px 22px rgba(20, 56, 90, 0.14));
}

.portal-sparkles {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.95) 0 1px, transparent 1.7px),
    radial-gradient(circle, rgba(255, 244, 185, 0.8) 0 1px, transparent 1.8px),
    radial-gradient(circle, rgba(123, 218, 255, 0.7) 0 1px, transparent 1.7px);
  background-position: 18% 27%, 54% 20%, 73% 76%;
  background-size: 180px 190px, 230px 210px, 270px 250px;
  opacity: 0.2;
  animation: portalTwinkle 3.4s ease-in-out infinite alternate;
}

.portal-trails {
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
  transform-origin: 50% 49%;
  animation: portalTrailGroup var(--portal-speed) ease-in-out infinite;
  transition: opacity 240ms ease, filter 240ms ease;
}

.portal-trails span,
.portal-trails::before,
.portal-trails::after {
  content: "";
  position: absolute;
  left: 25%;
  top: 32%;
  width: 47%;
  height: 31%;
  border: 2px solid rgba(255, 255, 255, 0.58);
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
  opacity: 0;
  transform: rotate(-12deg) scale(0.9);
  animation: portalTrailPulse var(--portal-speed) ease-in-out infinite;
}

.portal-trails span:nth-child(2) {
  left: 22%;
  top: 27%;
  width: 43%;
  height: 25%;
  border-color: rgba(107, 216, 255, 0.58);
  border-right-color: transparent;
  animation-delay: -0.75s;
}

.portal-trails span:nth-child(3) {
  left: 35%;
  top: 41%;
  width: 35%;
  height: 22%;
  border-color: rgba(255, 234, 150, 0.56);
  border-top-color: transparent;
  animation-delay: -1.5s;
}

.portal-trails::after {
  left: 33%;
  top: 29%;
  width: 28%;
  height: 18%;
  border-color: rgba(255, 255, 255, 0.46);
  border-left-color: transparent;
  animation-delay: -2.05s;
}

.portal-text {
  position: absolute;
  top: max(24px, calc(env(safe-area-inset-top) + 18px));
  left: 50%;
  z-index: 20;
  width: min(86%, 760px);
  margin: 0;
  text-align: center;
  transform: translateX(-50%);
}

.brand {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(11px, 1.4vw, 14px);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.portal-text h1 {
  margin: 0;
  font-size: clamp(24px, 4.1vw, 52px);
  line-height: 1.08;
  font-weight: 760;
  letter-spacing: 0;
  text-shadow: 0 14px 36px rgba(2, 20, 55, 0.34);
}

.portal-text h1 span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(14px, 2vw, 25px);
  font-weight: 600;
}

.portal-zone {
  position: absolute;
  z-index: 21;
  padding: 0;
  background: transparent;
  pointer-events: auto;
  touch-action: manipulation;
}

.portal-zone:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.86);
  outline-offset: 4px;
}

.portal-zone-earth {
  z-index: 24;
  left: 26%;
  top: 28%;
  width: 45%;
  height: 34%;
  border-radius: 50%;
}

.portal-zone-bowl {
  z-index: 20;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 0;
}

.portal-zone::before {
  content: "";
  position: absolute;
  inset: -8%;
  border-radius: inherit;
  background: radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(255, 255, 255, 0.2), transparent 44%);
  opacity: 0;
  transition: opacity 220ms ease;
}

.portal-zone.is-aimed::before {
  opacity: 1;
}

.hint {
  position: absolute;
  left: 50%;
  bottom: max(28px, calc(env(safe-area-inset-bottom) + 18px));
  z-index: 33;
  width: min(88vw, 42rem);
  margin: 0;
  padding: 10px 22px;
  border: 0;
  border-radius: 0;
  color: #ffffff;
  background: none !important;
  box-shadow: none;
  font-size: clamp(13px, 1.7vw, 14px);
  font-weight: 500;
  line-height: 1.6;
  text-align: center;
  text-shadow:
    0 2px 4px rgba(7, 11, 18, 0.95),
    0 0 20px rgba(7, 11, 18, 0.6),
    0 0 2px rgba(7, 11, 18, 0.85);
  transform: translateX(-50%);
}

.hint span {
  display: block;
  margin-top: 3px;
  color: #ffffff;
  font-size: 0.94em;
  font-weight: 500;
  line-height: 1.55;
}

.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  font-size: 24px;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease-out, opacity 0.2s ease;
}

.custom-cursor.active {
  opacity: 1;
}

@media (min-aspect-ratio: 1/1) {
  .portal-hero,
  .portal-hero[data-fit="cover"],
  .portal-hero[data-fit="contain"] {
    --portal-stage-size: 100vw;
    min-height: 100vh;
    min-height: 100svh;
    align-items: center;
    justify-items: center;
    background: #54baf3;
  }

  .portal-hero::before {
    background:
      linear-gradient(90deg, rgba(84, 186, 243, 0.26), rgba(84, 186, 243, 0.04) 18%, rgba(84, 186, 243, 0.04) 82%, rgba(84, 186, 243, 0.26)),
      url("../assets/portal/portal-bg-horizon.webp") center / cover no-repeat;
    filter: blur(14px) saturate(1.08);
    transform: scale(1.05);
    opacity: 0.45;
  }

  .portal-stage {
    --hand-layer-scale: 0.74;
    --left-hand-offset-x: -1%;
    --left-hand-offset-y: 3%;
    --right-hand-offset-x: 1.5%;
    --right-hand-offset-y: 3%;
    width: 100vw;
    height: 100vh;
    height: 100svh;
    aspect-ratio: auto;
    max-width: 100vw;
    max-height: 100svh;
    overflow: visible;
    cursor: default;
  }

  .portal-stage::before {
    background-image: url("../assets/portal/portal-bg-horizon.webp");
    background-size: cover;
    background-position: center center;
  }

  .portal-left-hand-earth,
  .portal-right-hand-wrap {
    inset: max(10px, 2svh) max(12px, 2vw);
    width: auto;
    height: auto;
  }

  .portal-left-hand-earth {
    transform-origin: center bottom;
  }

  .portal-right-hand-wrap {
    transform-origin: 78% 34%;
  }

  .portal-left-hand-earth .portal-layer,
  .portal-right-hand-wrap .portal-layer {
    object-fit: contain;
    object-position: center center;
  }

  .portal-zone-earth {
    left: 39%;
    top: 37%;
    width: 21%;
    height: 21%;
    transform: scale(0.9);
    transform-origin: center center;
  }

  .portal-zone-bowl {
    inset: max(10px, 2svh) max(12px, 2vw);
    width: auto;
    height: auto;
  }

  .portal-text {
    top: clamp(10px, 2.8vh, 26px);
    z-index: 32;
    width: min(78vw, 760px);
  }

  .brand {
    margin-bottom: 5px;
    font-size: clamp(10px, 1.25vw, 13px);
  }

  .portal-text h1 {
    font-size: clamp(24px, 4.6vh, 56px);
    line-height: 1.02;
  }

  .portal-text h1 span {
    margin-top: 5px;
    font-size: clamp(13px, 2.3vh, 24px);
  }

  .hint {
    bottom: max(4vh, calc(env(safe-area-inset-bottom) + 14px));
    z-index: 33;
    width: min(76vw, 680px);
    padding: 8px 20px;
    font-size: clamp(12px, 1.65vh, 14px);
  }
}

.warp {
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 8%, rgba(255, 255, 255, 0.24) 8.5% 9%, transparent 9.5%),
    radial-gradient(circle at 50% 50%, rgba(115, 211, 255, 0.36), transparent 42%),
    rgba(255, 255, 255, 0);
  transform: scale(0.7);
  transition: opacity 600ms ease, transform 780ms var(--rush);
}

.portal.has-layer-error .portal-fallback {
  opacity: 1;
}

.portal.has-layer-error .portal-stage::before,
.portal.has-layer-error .portal-layer-wrap,
.portal.has-layer-error .portal-sparkles,
.portal.has-layer-error .portal-trails {
  opacity: 0;
}

.portal-stage.is-aiming-earth .portal-earth {
  animation: portalEarthBreath 1.45s ease-in-out infinite;
  filter: saturate(1.08) drop-shadow(0 18px 30px rgba(20, 56, 90, 0.14));
}

.portal-stage.is-intro-earth-pop .portal-earth {
  animation: portalIntroEarthTap 540ms var(--rush) both;
  filter:
    saturate(1.16)
    drop-shadow(0 0 18px rgba(255, 255, 255, 0.5))
    drop-shadow(0 18px 30px rgba(20, 56, 90, 0.14));
}

.portal-stage.is-aiming-bowl::before {
  transform:
    perspective(1200px)
    rotateX(calc(var(--tilt-y) * -1.4deg))
    rotateY(calc(var(--tilt-x) * 1.8deg))
    translate3d(calc(var(--tilt-x) * -0.55%), calc(var(--tilt-y) * -0.45%), 0)
    scale(1.018);
  filter: saturate(1.04) brightness(1.025);
}

.portal-stage.is-aiming-earth .portal-right-hand-wrap,
.portal-stage.is-aiming-bowl .portal-right-hand-wrap {
  filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.42));
}

.portal.is-intro-cue .portal-right-hand-wrap {
  filter:
    drop-shadow(0 0 14px rgba(255, 255, 255, 0.5))
    drop-shadow(0 14px 24px rgba(20, 56, 90, 0.18));
}

.portal.is-descending .portal-hero {
  filter: saturate(1.2);
}

.portal.is-descending .portal-stage::before {
  transform-origin: var(--zoom-origin-x, 50%) var(--zoom-origin-y, 50%);
  transform: scale(20);
  opacity: 0;
  transition:
    transform 0.7s cubic-bezier(0.645, 0.045, 0.355, 1),
    opacity 0.6s ease-out;
}

.portal.is-descending .portal-left-hand-earth,
.portal.is-descending .portal-right-hand-wrap,
.portal.is-descending .portal-sparkles,
.portal.is-descending .portal-trails,
.portal.is-descending .portal-text,
.portal.is-descending .hint {
  opacity: 0;
  transition: opacity 220ms ease;
}

.portal.is-descending .warp {
  opacity: 0;
  transform: scale(0.7);
}

@media (prefers-reduced-motion: reduce) {
  body,
  button {
    cursor: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes portalBowlSway {
  0%, 100% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(0)
      rotate(0deg)
      scale(var(--hand-layer-scale));
  }
  45% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(-1.2%)
      rotate(-2deg)
      scale(var(--hand-layer-scale))
      scale(1.01);
  }
  70% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(-0.5%)
      rotate(1.4deg)
      scale(var(--hand-layer-scale))
      scale(1.004);
  }
}

@keyframes portalEarthPop {
  0% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(0)
      rotate(0deg)
      scale(var(--hand-layer-scale));
  }
  42% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(-2.3%)
      rotate(-4deg)
      scale(var(--hand-layer-scale))
      scale(1.025);
  }
  72% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(0.6%)
      rotate(3deg)
      scale(var(--hand-layer-scale))
      scale(0.992);
  }
  100% {
    transform:
      translate3d(var(--left-hand-offset-x), var(--left-hand-offset-y), 0)
      translateY(0)
      rotate(0deg)
      scale(var(--hand-layer-scale));
  }
}

@keyframes portalEarthBreath {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-0.8%) scale(1.028);
  }
}

@keyframes portalIntroEarthTap {
  0% {
    transform: translateY(0) scale(1);
  }
  38% {
    transform: translateY(-1.1%) scale(1.042);
  }
  68% {
    transform: translateY(0.35%) scale(0.99);
  }
  100% {
    transform: translateY(0) scale(1.012);
  }
}

@keyframes portalChopsticks {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  38% { transform: translate(-0.8%, 0.8%) rotate(-1.6deg); }
  58% { transform: translate(-0.35%, 0.35%) rotate(1deg) scaleY(0.996); }
}

@keyframes portalChopstickBreath {
  0%, 100% { translate: 0 0; }
  50% { translate: -0.25% 0.25%; }
}

@keyframes portalTwinkle {
  from { opacity: 0.12; }
  to { opacity: 0.28; }
}

@keyframes portalTrailGroup {
  0%, 100% { transform: rotate(-1deg) scale(0.99); }
  50% { transform: rotate(2deg) scale(1.01); }
}

@keyframes portalTrailPulse {
  0%, 100% {
    opacity: 0;
    transform: rotate(-12deg) scale(0.9);
  }
  38% {
    opacity: 0.62;
    transform: rotate(4deg) scale(1.02);
  }
  76% {
    opacity: 0.18;
    transform: rotate(12deg) scale(1.06);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(0.9); }
  50% { transform: scale(1.25); }
}

@keyframes ring {
  from {
    transform: scale(0.76);
    opacity: 0.9;
  }
  to {
    transform: scale(1.6);
    opacity: 0;
  }
}