:root {
  --design-width: 1200;
  --design-height: 2132;
  --blue: #3948ff;
  --nav-size: min(1.68vw, 20px);
  --label-size: min(2vw, 24px);
}

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

html {
  min-height: 100%;
  background: #eeeeeb url("assets/wall-texture-1200.png") center top / min(100vw, 1200px) auto repeat-y;
}

body {
  min-height: 100%;
  margin: 0;
  display: grid;
  place-items: start center;
  color: #111;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  transition: background-color 180ms ease;
}

body.is-dark {
  background: #02051d;
}

.stage {
  position: relative;
  width: min(100vw, 1200px);
  aspect-ratio: var(--design-width) / var(--design-height);
  min-height: min(177.6667vw, 2132px);
  overflow: hidden;
  background: url("assets/wall-texture-1200.png") center top / 100% 100% no-repeat;
  box-shadow: 0 0 36px rgba(40, 40, 40, 0.08);
  transition: background 220ms ease, box-shadow 220ms ease;
}

.stage::before,
.stage::after {
  position: absolute;
  pointer-events: none;
}

.stage.is-dark {
  background:
    radial-gradient(circle at 52% 37%, rgba(132, 58, 255, 0.28), transparent 34%),
    linear-gradient(180deg, rgba(2, 4, 25, 0.1), rgba(5, 1, 30, 0.72)),
    url("assets/dark-room-bg.png") center top / 100% 100% no-repeat;
  box-shadow: 0 0 42px rgba(115, 69, 255, 0.28);
}

.stage.is-dark::before {
  content: "";
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 3% 22%, rgba(111, 132, 255, 0.78) 0 0.12%, transparent 0.2%),
    radial-gradient(circle at 61% 12%, rgba(255, 110, 244, 0.8) 0 0.1%, transparent 0.18%),
    radial-gradient(circle at 35% 35%, rgba(255, 89, 242, 0.85) 0 0.12%, transparent 0.22%),
    radial-gradient(circle at 52% 42%, rgba(114, 159, 255, 0.65) 0 0.1%, transparent 0.2%),
    linear-gradient(90deg, rgba(11, 19, 63, 0.68) 0 23.7%, transparent 23.7%),
    linear-gradient(180deg, transparent 0 96.8%, rgba(196, 178, 216, 0.86) 96.8% 100%);
  opacity: 0.82;
}

.stage.is-dark::after {
  content: "Start     LYRA Universe";
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 4;
  height: 2.44%;
  padding-left: min(2vw, 24px);
  display: flex;
  align-items: center;
  color: #111;
  background: linear-gradient(180deg, #cfc9dc, #a79fbf);
  border-top: min(0.18vw, 2px) solid #efe8ff;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: min(1.55vw, 18px);
  box-shadow: 0 -1px 18px rgba(242, 87, 255, 0.2);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hotspot,
.folder {
  position: absolute;
  z-index: 5;
  display: block;
  color: #111;
  text-decoration: none;
  text-transform: uppercase;
  outline: 0;
  transition: background-color 130ms ease, box-shadow 130ms ease;
}

.hotspot:focus,
.folder:focus,
.message-form input:focus,
.message-form button:focus {
  outline: 0;
}

.hotspot:hover,
.hotspot.is-hovered,
.folder:hover,
.folder.is-hovered {
  background: rgba(70, 185, 255, 0.18);
  box-shadow: 0 0 min(1.84vw, 22px) rgba(70, 185, 255, 0.12);
}

.light-toggle {
  position: absolute;
  right: 2.55%;
  top: 5.42%;
  z-index: 20;
  width: 12.1%;
  height: 2.75%;
  padding: 0 min(0.65vw, 8px);
  border: min(0.16vw, 2px) solid rgba(45, 45, 45, 0.56);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: min(0.55vw, 7px);
  color: #111;
  background: rgba(242, 242, 239, 0.72);
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-size: min(1.16vw, 14px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
  cursor: pointer;
  outline: 0;
  text-transform: uppercase;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.light-toggle:focus {
  outline: 0;
}

.light-toggle:hover {
  background: rgba(70, 185, 255, 0.18);
  box-shadow: 0 0 min(1.84vw, 22px) rgba(70, 185, 255, 0.16);
}

.light-toggle-icon {
  width: min(1.15vw, 14px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: #111;
  box-shadow: inset 0 0 0 min(0.18vw, 2px) rgba(255, 255, 255, 0.4);
}

.nav-hotspots {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

.nav-hotspots .hotspot {
  top: 2.25%;
  height: 2.15%;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--nav-size);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
  white-space: nowrap;
  pointer-events: auto;
}

.nav-home {
  left: 2.25%;
  width: 6.35%;
}

.nav-home::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 2%;
  height: min(0.34vw, 4px);
  background: #111;
}

.nav-vizion {
  left: 11.6%;
  width: 13.1%;
}

.nav-calendar {
  left: 26%;
  width: 15.25%;
}

.nav-music {
  left: 42.15%;
  width: 7.1%;
}

.nav-writing {
  left: 50.2%;
  width: 8.75%;
}

.nav-brand {
  left: 59.55%;
  width: 17.35%;
}

.nav-articles {
  left: 77.6%;
  width: 8.7%;
}

.nav-consultation {
  left: 87%;
  width: 11.25%;
}

.hero-logo {
  position: absolute;
  left: 22.2%;
  top: 7.72%;
  width: 55.8%;
  height: 18.2%;
  z-index: 3;
}

.hello {
  position: absolute;
  left: 0;
  top: 4%;
  width: 100%;
  margin: 0;
  text-align: center;
  color: #050505;
  font-family: "Snell Roundhand", "Brush Script MT", cursive;
  font-size: min(5.4vw, 65px);
  line-height: 1;
  transform: rotate(-4deg);
}

.lyra-panel {
  position: absolute;
  left: 8.2%;
  top: 24.8%;
  width: 82.8%;
  height: 42%;
  display: grid;
  place-items: center;
  background: rgba(213, 213, 215, 0.76);
}

.lyra-word {
  color: #090c45;
  font-family: Impact, "Arial Black", sans-serif;
  font-size: min(11.6vw, 139px);
  line-height: 0.9;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.lyra-letter {
  display: inline-block;
  opacity: 0;
  animation-delay: 180ms;
  animation-duration: 2.8s;
  animation-iteration-count: infinite;
  animation-timing-function: steps(1, end);
}

.lyra-letter:nth-child(1) {
  animation-name: lyra-letter-l;
}

.lyra-letter:nth-child(2) {
  animation-name: lyra-letter-y;
}

.lyra-letter:nth-child(3) {
  animation-name: lyra-letter-r;
}

.lyra-letter:nth-child(4) {
  animation-name: lyra-letter-a;
}

@keyframes lyra-letter-l {
  0%,
  13.99%,
  82.01%,
  100% {
    opacity: 0;
  }

  14%,
  82% {
    opacity: 1;
  }
}

@keyframes lyra-letter-y {
  0%,
  21.99%,
  82.01%,
  100% {
    opacity: 0;
  }

  22%,
  82% {
    opacity: 1;
  }
}

@keyframes lyra-letter-r {
  0%,
  29.99%,
  82.01%,
  100% {
    opacity: 0;
  }

  30%,
  82% {
    opacity: 1;
  }
}

@keyframes lyra-letter-a {
  0%,
  37.99%,
  82.01%,
  100% {
    opacity: 0;
  }

  38%,
  82% {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lyra-letter {
    opacity: 1;
    animation: none;
  }
}

.logo-rule {
  position: absolute;
  width: min(0.68vw, 8px);
  border-radius: 999px;
  background: var(--blue);
}

.left-rule {
  left: 3.4%;
  top: 11.2%;
  height: 56%;
}

.right-rule {
  right: 4.3%;
  top: 25.2%;
  height: 54.2%;
}

.logo-orb {
  position: absolute;
  width: 11.8%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(145deg, #2b58ff, #3a26df);
}

.left-orb {
  left: -1.8%;
  top: 0;
}

.right-orb {
  right: -0.2%;
  bottom: 9.8%;
}

.short-line {
  position: absolute;
  left: 11.4%;
  top: 75.6%;
  width: 22%;
  height: min(0.34vw, 4px);
  background: #111;
}

.universe {
  position: absolute;
  left: 34.5%;
  top: 68.6%;
  min-width: 50%;
  margin: 0;
  padding: min(1vw, 12px) min(1.7vw, 20px);
  border: min(0.25vw, 3px) solid var(--blue);
  border-radius: 999px;
  color: var(--blue);
  background: rgba(246, 246, 245, 0.36);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: min(2.75vw, 33px);
  font-weight: 800;
  line-height: 1;
  text-align: center;
  text-transform: uppercase;
  white-space: nowrap;
}

.language-toggle {
  position: absolute;
  right: 0.05%;
  top: 5.42%;
  z-index: 20;
  width: min(2.5vw, 30px);
  height: 2.75%;
  padding: 0;
  border: min(0.2vw, 2px) solid rgba(57, 72, 255, 0.86);
  border-radius: 999px;
  color: var(--blue);
  background: rgba(246, 246, 245, 0.58);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: min(1.35vw, 16px);
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  outline: 0;
  transition: background-color 130ms ease, box-shadow 130ms ease, color 130ms ease;
}

.language-toggle:hover,
.language-toggle.is-hovered {
  background: rgba(70, 185, 255, 0.18);
  box-shadow: 0 0 min(1.84vw, 22px) rgba(70, 185, 255, 0.16);
}

.stage.is-zh .hotspot,
.stage.is-zh .folder,
.stage.is-zh .message-form input,
.stage.is-zh .credit,
.stage.is-zh .language-toggle {
  font-family: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
  font-weight: 800;
}

.stage.is-zh .hotspot {
  font-size: min(1.58vw, 19px);
}

.stage.is-zh .folder {
  font-size: min(1.86vw, 22px);
  line-height: 1.18;
}

.portrait-scene {
  position: absolute;
  left: 17.85%;
  top: 28.14%;
  width: 62.17%;
  z-index: 2;
  pointer-events: none;
}

.portrait-scene img,
.folder img,
.message-form button img {
  display: block;
  width: 100%;
  height: auto;
}

.folder-grid {
  position: absolute;
  inset: 0;
  z-index: 6;
}

.folder {
  display: grid;
  justify-items: center;
  align-content: start;
  padding: min(0.8vw, 10px);
  border-radius: min(1vw, 12px);
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--label-size);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: 0;
  text-align: center;
}

.folder span {
  display: block;
  margin-top: min(0.5vw, 6px);
  text-shadow: 0 min(0.08vw, 1px) 0 rgba(255, 255, 255, 0.45);
}

.folder-vizion {
  left: 11.6%;
  top: 26.35%;
  width: 17.2%;
  transform: rotate(8deg);
}

.folder-calendar {
  left: 71.7%;
  top: 28.55%;
  width: 17.3%;
}

.folder-music {
  left: 3.9%;
  top: 45.55%;
  width: 13.9%;
  transform: rotate(-1deg);
}

.folder-writing {
  left: 79.8%;
  top: 47.65%;
  width: 15.1%;
  transform: rotate(8deg);
}

.folder-brand {
  left: 8.8%;
  top: 64.05%;
  width: 16.3%;
  transform: rotate(-5deg);
}

.folder-articles {
  left: 73.8%;
  top: 63.8%;
  width: 16.2%;
  transform: rotate(8deg);
}

.folder-loveu-rabbit {
  left: 27.9%;
  top: 76.2%;
  width: 13.9%;
  transform: rotate(-3deg);
}

.folder-consultation {
  left: 57.7%;
  top: 75.6%;
  width: 13.9%;
}

.message-form {
  position: absolute;
  left: 15.35%;
  top: 85.32%;
  width: 70.2%;
  height: 5.55%;
  z-index: 8;
  margin: 0;
}

.message-form input {
  position: absolute;
  left: 0;
  top: 0;
  width: 88.8%;
  height: 81%;
  padding: 0 5.6%;
  border: min(0.25vw, 3px) solid rgba(70, 70, 70, 0.68);
  border-radius: 999px;
  background: transparent;
  color: #111;
  caret-color: #111;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: min(3vw, 36px);
  appearance: none;
}

.message-form input::placeholder {
  color: transparent;
}

.message-form button {
  position: absolute;
  right: 0;
  top: 5%;
  width: 8.2%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.credit {
  position: absolute;
  left: 0;
  top: 91.86%;
  width: 100%;
  z-index: 8;
  margin: 0;
  color: #111;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-size: min(2.35vw, 28px);
  font-weight: 900;
  line-height: 1;
  text-align: center;
  letter-spacing: 0;
}

.stage.is-dark .light-toggle {
  color: #ffd8ff;
  border-color: rgba(255, 107, 246, 0.88);
  background: rgba(22, 9, 64, 0.76);
  box-shadow:
    0 0 min(1.7vw, 20px) rgba(255, 93, 245, 0.36),
    inset 0 0 min(1vw, 12px) rgba(82, 130, 255, 0.24);
  text-shadow: 0 0 min(0.7vw, 8px) rgba(255, 117, 250, 0.72);
}

.stage.is-dark .light-toggle:hover {
  background: rgba(255, 89, 242, 0.18);
}

.stage.is-dark .light-toggle-icon {
  background: #ff61f4;
  box-shadow:
    0 0 min(0.95vw, 11px) rgba(255, 93, 245, 0.94),
    0 0 min(1.8vw, 22px) rgba(87, 142, 255, 0.7);
}

.stage.is-dark .hotspot,
.stage.is-dark .folder {
  color: #dec4ff;
  text-shadow:
    0 0 min(0.65vw, 8px) rgba(255, 101, 244, 0.82),
    0 0 min(1.4vw, 17px) rgba(76, 139, 255, 0.58);
}

.stage.is-dark .hotspot:hover,
.stage.is-dark .hotspot.is-hovered,
.stage.is-dark .folder:hover,
.stage.is-dark .folder.is-hovered {
  background: rgba(255, 93, 245, 0.16);
  box-shadow:
    0 0 min(1.5vw, 18px) rgba(255, 93, 245, 0.32),
    inset 0 0 min(1.2vw, 14px) rgba(90, 149, 255, 0.18);
}

.stage.is-dark .nav-home {
  color: #ff7cf6;
}

.stage.is-dark .nav-home::after,
.stage.is-dark .short-line {
  background: #ff5ff4;
  box-shadow: 0 0 min(0.95vw, 11px) rgba(255, 93, 245, 0.88);
}

.stage.is-dark .hello {
  color: #ff70f7;
  text-shadow:
    0 0 min(0.9vw, 11px) rgba(255, 98, 245, 0.82),
    0 0 min(2.2vw, 26px) rgba(255, 98, 245, 0.48);
}

.stage.is-dark .lyra-panel {
  background: linear-gradient(90deg, rgba(17, 12, 52, 0.88), rgba(30, 16, 70, 0.62));
  box-shadow: 0 0 min(2.1vw, 25px) rgba(92, 119, 255, 0.22);
}

.stage.is-dark .lyra-word {
  color: #ff62ef;
  filter: none;
}

.stage.is-dark .lyra-letter {
  color: #ff62ef;
  background: linear-gradient(90deg, #ff53ef 4%, #ff83f8 34%, #7b71ff 68%, #62b0ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow:
    0 0 min(0.55vw, 7px) rgba(255, 104, 245, 0.9),
    0 0 min(1.35vw, 16px) rgba(255, 95, 244, 0.7),
    0 0 min(2.2vw, 26px) rgba(85, 143, 255, 0.62);
  filter:
    drop-shadow(0 0 min(0.7vw, 8px) rgba(255, 103, 245, 0.92))
    drop-shadow(0 0 min(1.6vw, 19px) rgba(84, 142, 255, 0.76));
}

.stage.is-dark .logo-rule {
  background: linear-gradient(180deg, #ff60f4, #5ba3ff);
  box-shadow:
    0 0 min(0.7vw, 8px) rgba(255, 92, 244, 0.78),
    0 0 min(1.5vw, 18px) rgba(80, 146, 255, 0.5);
}

.stage.is-dark .logo-orb {
  background: radial-gradient(circle at 34% 29%, #a56cff, #5529e6 66%, #243edc);
  box-shadow:
    0 0 min(1vw, 12px) rgba(255, 91, 245, 0.76),
    0 0 min(2.4vw, 29px) rgba(86, 146, 255, 0.54);
}

.stage.is-dark .universe {
  color: #83a9ff;
  border-color: #5d8cff;
  background: rgba(8, 7, 48, 0.62);
  box-shadow:
    0 0 min(0.75vw, 9px) rgba(85, 143, 255, 0.8),
    inset 0 0 min(1vw, 12px) rgba(85, 143, 255, 0.18);
  text-shadow: 0 0 min(0.75vw, 9px) rgba(101, 154, 255, 0.9);
}

.stage.is-dark .language-toggle {
  color: #8fb4ff;
  border-color: #678dff;
  background: rgba(8, 7, 48, 0.64);
  box-shadow:
    0 0 min(0.75vw, 9px) rgba(85, 143, 255, 0.66),
    inset 0 0 min(1vw, 12px) rgba(85, 143, 255, 0.18);
  text-shadow: 0 0 min(0.65vw, 8px) rgba(101, 154, 255, 0.82);
}

.stage.is-dark .language-toggle:hover,
.stage.is-dark .language-toggle.is-hovered {
  background: rgba(255, 93, 245, 0.16);
  box-shadow:
    0 0 min(1.5vw, 18px) rgba(255, 93, 245, 0.32),
    inset 0 0 min(1.2vw, 14px) rgba(90, 149, 255, 0.18);
}

.stage.is-dark .portrait-scene {
  filter: none;
}

.stage.is-dark .portrait-scene::before {
  content: none;
  position: absolute;
  left: 7.43%;
  top: 26.94%;
  width: 85.14%;
  height: 48.73%;
  z-index: 1;
  border: min(0.24vw, 3px) solid #8c65ff;
  box-shadow:
    0 0 min(1vw, 12px) rgba(255, 91, 245, 0.72),
    0 0 min(2.4vw, 28px) rgba(91, 143, 255, 0.58);
}

.stage.is-dark .portrait-scene img {
  position: relative;
  z-index: 2;
  filter: none;
}

.stage.is-dark .folder img {
  filter: none;
}

.stage.is-dark .folder span {
  text-shadow:
    0 0 min(0.6vw, 7px) rgba(255, 102, 246, 0.86),
    0 0 min(1.3vw, 16px) rgba(94, 151, 255, 0.58);
}

.stage.is-dark .message-form input {
  border-color: #d263ff;
  color: #efd9ff;
  caret-color: #ff78f7;
  background: rgba(9, 5, 42, 0.44);
  box-shadow:
    0 0 min(1vw, 12px) rgba(255, 94, 244, 0.52),
    inset 0 0 min(1.4vw, 17px) rgba(101, 143, 255, 0.16);
}

.stage.is-dark .message-form input::placeholder {
  color: rgba(224, 196, 255, 0.58);
}

.stage.is-dark .message-form button img {
  filter:
    invert(80%)
    sepia(91%)
    saturate(3368%)
    hue-rotate(210deg)
    brightness(1.12)
    drop-shadow(0 0 min(0.7vw, 8px) rgba(255, 94, 244, 0.82));
}

.stage.is-dark .credit {
  color: #ff7cf6;
  text-shadow:
    0 0 min(0.65vw, 8px) rgba(255, 103, 245, 0.9),
    0 0 min(1.4vw, 17px) rgba(255, 103, 245, 0.48);
}

/* Dark-mode hero artwork matched pixel-for-pixel to figure 2. */
.hero-logo-art {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  pointer-events: none;
  user-select: none;
}

.stage.is-dark .hero-logo {
  left: 21.7853%;
  top: 8.3732%;
  width: 59.5112%;
  height: 20.9330%;
}

.stage.is-dark .hero-logo-art {
  display: block;
}

.stage.is-dark .hero-logo > :not(.hero-logo-art) {
  display: none;
}