:root {
  --font-scale: 1;
  --camera-panel-size: 420px;
  --bg-start: #f6fbff;
  --bg-end: #eef7ff;
  --panel-bg: rgba(255, 255, 255, 0.34);
  --panel-strong: rgba(255, 255, 255, 0.46);
  --panel-border: rgba(255, 255, 255, 0.58);
  --text-main: rgba(24, 43, 73, 0.96);
  --text-soft: rgba(54, 78, 112, 0.76);
  --accent: #62a6ff;
  --accent-bright: #8dc5ff;
  --success: #1fbf8f;
  --danger: #ff6d89;
  --shadow-heavy: 0 30px 90px rgba(111, 151, 201, 0.22);
  --shadow-soft: 0 12px 40px rgba(164, 194, 232, 0.18);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.55, 0, 1, 0.45);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

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

html {
  font-size: calc(16px * var(--font-scale));
}

body {
  overflow: hidden;
  font-family: "SF Pro Display", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--text-main);
  background:
    linear-gradient(180deg, rgba(245, 250, 255, 0.08), rgba(236, 244, 255, 0.12)),
    url("./%E8%83%8C%E6%99%AF%E5%9B%BE.png") center center / cover no-repeat fixed;
}

body:not(.has-entered-experience) .app-shell {
  visibility: hidden;
}

body.has-open-feature .app-shell {
  visibility: hidden;
}

button,
input,
textarea,
select {
  font: inherit;
}

.start-page {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: start center;
  min-height: 100vh;
  overflow: hidden;
  color: #f8fbff;
  background: #030406;
  transition:
    opacity 520ms var(--ease-out),
    visibility 520ms var(--ease-out),
    transform 520ms var(--ease-out);
}

body.has-entered-experience .start-page,
body.has-open-feature .start-page {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(1.035);
}

.start-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.start-scan-video {
  position: absolute;
  right: 24px;
  top: 24px;
  z-index: 1;
  width: 180px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: 0.24;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 16px;
  transform: scaleX(-1);
}

.start-hand-cursor {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 6;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.74);
  transition:
    opacity 160ms var(--ease-out),
    transform 180ms var(--spring),
    filter 180ms var(--ease-out);
  filter: drop-shadow(0 10px 28px rgba(79, 230, 255, 0.28));
  mix-blend-mode: screen;
}

.start-hand-cursor__halo,
.start-hand-cursor__core,
.start-hand-cursor__glint {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.start-hand-cursor__halo {
  border: 1px solid rgba(255, 255, 255, 0.68);
  background:
    radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.62), transparent 18%),
    radial-gradient(circle, rgba(83, 234, 255, 0.1) 0 46%, rgba(83, 234, 255, 0.3) 48% 54%, transparent 58%);
  box-shadow:
    inset 0 0 14px rgba(255, 255, 255, 0.32),
    0 0 0 7px rgba(83, 234, 255, 0.08),
    0 0 34px rgba(83, 234, 255, 0.42);
  animation: cursorHaloBreath 1.8s ease-in-out infinite;
}

.start-hand-cursor__core {
  inset: 12px;
  background:
    radial-gradient(circle at 36% 30%, #ffffff 0 16%, rgba(122, 242, 255, 0.95) 18% 46%, rgba(53, 204, 226, 0.62) 48% 100%);
  box-shadow:
    0 0 16px rgba(83, 234, 255, 0.72),
    inset 0 -3px 8px rgba(0, 60, 75, 0.26);
}

.start-hand-cursor__glint {
  inset: 7px 10px 23px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0));
  opacity: 0.78;
  transform: rotate(-18deg);
}

.start-hand-cursor.is-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.start-hand-cursor.is-clicking {
  transform: translate(-50%, -50%) scale(0.86);
  filter: drop-shadow(0 8px 34px rgba(83, 234, 255, 0.56));
}

.start-hand-cursor.is-clicking .start-hand-cursor__halo {
  border-color: rgba(255, 255, 255, 0.94);
  box-shadow:
    inset 0 0 16px rgba(255, 255, 255, 0.5),
    0 0 0 12px rgba(83, 234, 255, 0.13),
    0 0 46px rgba(83, 234, 255, 0.66);
}

.start-hand-cursor.is-clicking .start-hand-cursor__core {
  inset: 9px;
}

.start-scrim,
.start-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.start-scrim {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.36) 48%, rgba(0, 0, 0, 0.74)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.12) 42%, rgba(0, 0, 0, 0.58));
}

.start-noise {
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.92), transparent 74%);
}

.start-content {
  position: relative;
  z-index: 1;
  width: min(1640px, calc(100vw - 72px));
  margin: 0 auto;
  padding: clamp(16vh, 20vh, 22vh) 0 0;
  text-align: center;
}

.start-kicker {
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

.start-title {
  width: 100%;
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: min(6.2vw, 6rem);
  line-height: 0.98;
  letter-spacing: 0;
  color: #ffffff;
  white-space: nowrap;
  text-shadow: 0 20px 60px rgba(0, 0, 0, 0.62);
}

.start-copy {
  margin: 20px auto 58px;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.start-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  width: min(1280px, 100%);
  margin: 0 auto;
}

.start-nav__link {
  position: relative;
  display: grid;
  grid-template-columns: 18px auto;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 12px;
  min-width: 0;
  min-height: 96px;
  padding: 14px 18px 14px 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 26px;
  color: #ffffff;
  text-align: left;
  text-decoration: none;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.015) 54%, rgba(120, 215, 255, 0.06)),
    rgba(0, 0, 0, 0.18);
  box-shadow:
    0 18px 46px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
  backdrop-filter: url(#liquid-glass-filter) saturate(125%) blur(10px);
  -webkit-backdrop-filter: url(#liquid-glass-filter) saturate(125%) blur(10px);
  cursor: pointer;
  transform: translateY(18px);
  opacity: 0;
  animation: startLinkIn 760ms var(--spring) forwards;
  transition:
    transform 260ms var(--spring),
    border-color 220ms var(--ease-out),
    background-color 220ms var(--ease-out),
    box-shadow 220ms var(--ease-out);
}

.start-nav__link:nth-child(2) {
  animation-delay: 80ms;
}

.start-nav__link:nth-child(3) {
  animation-delay: 160ms;
}

.start-nav__link:nth-child(4) {
  animation-delay: 240ms;
}

.start-nav__surface {
  position: absolute;
  inset: 2px;
  z-index: 0;
  border-radius: 23px;
  background:
    radial-gradient(circle at 28% 28%, rgba(255, 255, 255, 0.16), transparent 30%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(142, 224, 255, 0.035) 52%, rgba(255, 255, 255, 0.015));
  opacity: 0.64;
  transform: scale(0.98);
  transition:
    opacity 220ms var(--ease-out),
    transform 260ms var(--spring);
  pointer-events: none;
}

.start-nav__link::after {
  content: "";
  position: absolute;
  left: 42px;
  right: 16px;
  top: 14px;
  height: 1px;
  background: rgba(255, 255, 255, 0.58);
  transform: scaleX(0.34);
  transform-origin: left;
  transition: transform 260ms var(--ease-out);
}

.start-nav__dot,
.start-nav__link > span:not(.start-nav__surface):not(.start-nav__dot),
.start-nav__link small {
  position: relative;
  z-index: 1;
}

.start-nav__dot {
  grid-row: 1 / 3;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.12),
    0 0 18px rgba(255, 255, 255, 0.38);
  transition:
    transform 240ms var(--spring),
    background-color 200ms var(--ease-out),
    box-shadow 200ms var(--ease-out);
}

.start-nav__link > span:not(.start-nav__surface):not(.start-nav__dot) {
  font-size: clamp(1.22rem, 1.8vw, 1.8rem);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.start-nav__link small {
  grid-column: 2;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(54, 78, 112, 0.68);
  color: rgba(255, 255, 255, 0.62);
}

.start-nav__link:hover,
.start-nav__link:focus-visible,
.start-nav__link.is-gesture-hover {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.82);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.035) 52%, rgba(130, 220, 255, 0.1)),
    rgba(0, 0, 0, 0.16);
  box-shadow:
    0 24px 58px rgba(0, 0, 0, 0.36),
    0 0 28px rgba(255, 255, 255, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.42);
  outline: none;
  transform: translateY(-5px) scale(1.045);
  animation: softJellyPulse 740ms var(--spring);
}

.start-nav__link:hover .start-nav__surface,
.start-nav__link:focus-visible .start-nav__surface,
.start-nav__link.is-gesture-hover .start-nav__surface {
  opacity: 0.9;
  transform: scale(1.03, 1.1);
  animation: liquidBounce 780ms var(--spring);
}

.start-nav__link:hover .start-nav__dot,
.start-nav__link:focus-visible .start-nav__dot,
.start-nav__link.is-gesture-hover .start-nav__dot {
  background: #4fe6ff;
  box-shadow:
    0 0 0 8px rgba(79, 230, 255, 0.18),
    0 0 24px rgba(79, 230, 255, 0.62);
  transform: scale(1.2);
}

.start-nav__link:hover::after,
.start-nav__link:focus-visible::after,
.start-nav__link.is-gesture-hover::after {
  transform: scaleX(1);
}

.start-nav__link.is-pending {
  cursor: default;
}

.start-nav__link.is-pending small::after {
  content: " / Pending";
}

.start-scan-hud {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  margin: 22px auto 0;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 16px;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.22);
  backdrop-filter: saturate(120%) blur(10px);
}

.start-scan-hud__label,
.start-scan-hud__status {
  margin: 0;
}

.start-scan-hud__label {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.58);
}

.start-scan-hud__status {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.82);
}

.feature-page {
  position: fixed;
  inset: 0;
  z-index: 18;
  display: grid;
  place-items: center;
  min-height: 100vh;
  overflow: hidden;
  color: #eafff7;
  background:
    radial-gradient(circle at 18% 18%, rgba(12, 198, 128, 0.18), transparent 28%),
    radial-gradient(circle at 76% 72%, rgba(42, 219, 164, 0.12), transparent 30%),
    linear-gradient(145deg, #020403 0%, #07100d 52%, #020504 100%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(1.025);
  transition:
    opacity 420ms var(--ease-out),
    visibility 420ms var(--ease-out),
    transform 520ms var(--ease-out);
}

body.feature-hologram .feature-page--hologram,
body.feature-cultural .feature-page--cultural {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: scale(1);
}

.feature-grid {
  position: absolute;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(75, 255, 181, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75, 255, 181, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.88), transparent 86%);
}

.feature-page::before,
.feature-page::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.feature-page::before {
  inset: 18px;
  border: 1px solid rgba(101, 255, 190, 0.22);
  border-radius: 30px;
  box-shadow:
    inset 0 0 42px rgba(39, 211, 140, 0.08),
    0 0 70px rgba(39, 211, 140, 0.08);
}

.feature-page::after {
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(101, 255, 190, 0.9), transparent);
  animation: featureScanline 4.8s ease-in-out infinite;
}

.feature-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(480px, 1.18fr);
  gap: clamp(28px, 4vw, 68px);
  align-items: center;
  width: min(1280px, calc(100vw - 72px));
}

.feature-copy {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid rgba(101, 255, 190, 0.2);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(12, 26, 21, 0.94), rgba(3, 9, 7, 0.72)),
    rgba(7, 16, 13, 0.78);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(213, 255, 238, 0.12);
}

.feature-kicker {
  margin: 0 0 18px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: #65ffbe;
}

.feature-copy h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: 0.94;
  letter-spacing: 0;
  color: #f4fff9;
}

.feature-copy p:not(.feature-kicker) {
  max-width: 34rem;
  margin: 26px 0 0;
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.9;
  color: rgba(222, 255, 241, 0.74);
}

.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.feature-meta span {
  padding: 7px 10px;
  border: 1px solid rgba(101, 255, 190, 0.2);
  border-radius: 999px;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: rgba(226, 255, 243, 0.82);
  background: rgba(101, 255, 190, 0.06);
}

.feature-page--hologram {
  background:
    radial-gradient(circle at 50% 0%, rgba(190, 255, 245, 0.18), transparent 34%),
    linear-gradient(180deg, #f7faf9 0%, #e7eeec 48%, #dce6e2 100%);
  color: #101417;
}

.feature-page--hologram .feature-grid {
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(16, 20, 23, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 20, 23, 0.035) 1px, transparent 1px);
}

.feature-page--hologram::before {
  border: 0;
  box-shadow: inset 0 -34vh 76vh rgba(255, 255, 255, 0.6);
}

.feature-page--hologram::after {
  background: linear-gradient(90deg, transparent, rgba(16, 20, 23, 0.18), transparent);
}

.feature-page--hologram .feature-shell {
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  align-items: stretch;
  gap: clamp(18px, 3vh, 34px);
  width: min(1720px, calc(100vw - 64px));
  min-height: 100svh;
  padding: clamp(78px, 8vh, 104px) 0 clamp(28px, 5vh, 56px);
}

.feature-page--hologram .feature-copy {
  display: grid;
  grid-template-columns: auto minmax(360px, 1fr) auto;
  gap: clamp(20px, 3vw, 48px);
  align-items: end;
  align-self: auto;
  min-height: 122px;
  padding: 20px clamp(24px, 3vw, 48px);
  border: 1px solid rgba(16, 20, 23, 0.1);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(241, 247, 246, 0.48)),
    rgba(255, 255, 255, 0.56);
  box-shadow:
    0 24px 74px rgba(73, 88, 93, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(24px) saturate(135%);
  -webkit-backdrop-filter: blur(24px) saturate(135%);
}

.feature-page--hologram .feature-kicker {
  grid-column: 1 / -1;
  margin: 0 0 -12px;
  color: #18846f;
}

.feature-page--hologram .feature-copy h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.4rem, 5vw, 5.8rem);
  line-height: 0.96;
  color: #111719;
  white-space: nowrap;
  text-shadow: 0 16px 42px rgba(255, 255, 255, 0.9);
}

.feature-page--hologram .feature-copy p:not(.feature-kicker) {
  max-width: 46rem;
  margin: 0;
  color: rgba(16, 20, 23, 0.64);
  font-size: clamp(0.98rem, 1.35vw, 1.24rem);
  line-height: 1.78;
}

.feature-page--hologram .feature-meta {
  justify-content: flex-end;
  margin-top: 0;
  white-space: nowrap;
}

.feature-page--hologram .feature-meta span {
  color: rgba(16, 20, 23, 0.66);
  border-color: rgba(16, 20, 23, 0.12);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.feature-page--cultural .feature-shell {
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  gap: clamp(12px, 2vh, 22px);
  width: min(1760px, calc(100vw - 56px));
  min-height: 100svh;
  padding: clamp(72px, 8vh, 94px) 0 clamp(22px, 4vh, 42px);
}

.feature-page--cultural {
  color: #15181c;
  background:
    linear-gradient(180deg, #f5f7f6 0%, #e9eeec 46%, #dce5e1 100%);
}

.feature-page--cultural .feature-grid {
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

.feature-page--cultural::before {
  border: 0;
  box-shadow: inset 0 -32vh 80vh rgba(255, 255, 255, 0.52);
}

.feature-page--cultural::after {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.18), transparent);
}

.feature-page--cultural .feature-copy {
  display: grid;
  grid-template-columns: minmax(190px, 0.54fr) minmax(360px, 1fr) auto;
  gap: clamp(18px, 3vw, 44px);
  align-items: center;
  min-height: 118px;
  padding: 20px clamp(22px, 3vw, 44px);
  border: 1px solid rgba(34, 92, 132, 0.12);
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.74), rgba(234, 242, 248, 0.42)),
    rgba(247, 251, 253, 0.64);
  box-shadow:
    0 24px 70px rgba(70, 86, 96, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(24px) saturate(135%);
  -webkit-backdrop-filter: blur(24px) saturate(135%);
}

.feature-page--cultural .feature-copy h2 {
  max-width: none;
  margin: 0;
  font-size: clamp(1.9rem, 4.2vw, 3.8rem);
  line-height: 0.96;
  color: #0f151a;
  text-shadow: 0 16px 42px rgba(255, 255, 255, 0.82);
}

.feature-page--cultural .feature-copy p:not(.feature-kicker) {
  max-width: 46rem;
  margin: 0;
  font-size: clamp(0.96rem, 1.4vw, 1.28rem);
  line-height: 1.8;
  color: rgba(21, 24, 28, 0.62);
}

.feature-page--cultural .feature-kicker {
  grid-column: 1 / -1;
  margin: 0 0 -14px;
  font-size: 0.66rem;
  color: #1d6aa5;
}

.feature-page--cultural .feature-meta {
  justify-content: flex-end;
  margin-top: 0;
}

.feature-page--cultural .feature-meta span {
  color: rgba(21, 41, 57, 0.68);
  border-color: rgba(40, 122, 180, 0.14);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.hologram-stage,
.cultural-carousel {
  position: relative;
  min-height: min(68vh, 720px);
  overflow: hidden;
  border: 1px solid rgba(101, 255, 190, 0.24);
  border-radius: 30px;
  background: #020504;
  box-shadow:
    0 34px 90px rgba(0, 0, 0, 0.56),
    0 0 0 1px rgba(255, 255, 255, 0.04),
    inset 0 1px 0 rgba(226, 255, 243, 0.12);
}

.feature-page--hologram .hologram-stage {
  min-height: min(76vh, 820px);
  border-color: rgba(16, 20, 23, 0.12);
  border-radius: 38px;
  background:
    radial-gradient(circle at 50% 32%, rgba(134, 245, 232, 0.16), transparent 44%),
    #0a0e10;
  box-shadow:
    0 42px 120px rgba(63, 80, 88, 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.72),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.hologram-video {
  position: absolute;
  inset: -7% 0 7%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
  filter: saturate(1.08) contrast(1.08) brightness(0.92);
}

.hologram-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.52), transparent 28%, transparent 72%, rgba(0, 0, 0, 0.5)),
    repeating-linear-gradient(0deg, rgba(101, 255, 190, 0.06) 0 1px, transparent 1px 5px);
  pointer-events: none;
}

.hologram-scan {
  position: absolute;
  inset: -20% 0;
  background: linear-gradient(180deg, transparent 0 44%, rgba(101, 255, 190, 0.24) 50%, transparent 56% 100%);
  mix-blend-mode: screen;
  animation: hologramScan 4.2s ease-in-out infinite;
  pointer-events: none;
}

.hologram-readout {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hologram-readout span {
  padding: 8px 10px;
  border: 1px solid rgba(101, 255, 190, 0.24);
  border-radius: 8px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #dffff2;
  background: rgba(2, 7, 5, 0.62);
}

.cultural-carousel {
  background:
    radial-gradient(circle at 50% 50%, rgba(101, 255, 190, 0.12), transparent 52%),
    #020504;
}

.cultural-draw-stage {
  display: block;
  min-height: min(72vh, 760px);
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.feature-page--cultural .cultural-draw-stage {
  min-height: 0;
  height: min(78vh, calc(100svh - 184px));
}

.cultural-scan-video {
  position: absolute;
  right: 18px;
  top: 18px;
  z-index: 2;
  width: 150px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: 0.28;
  border: 1px solid rgba(101, 255, 190, 0.22);
  border-radius: 12px;
  transform: scaleX(-1);
}

.cultural-pointer {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 45;
  width: 38px;
  height: 38px;
  border: 2px solid rgba(21, 24, 28, 0.68);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.8);
  background: radial-gradient(circle, rgba(255, 255, 255, 0.9) 0 16%, rgba(34, 128, 100, 0.14) 20% 54%, transparent 58%);
  box-shadow:
    0 0 0 8px rgba(21, 24, 28, 0.05),
    0 16px 34px rgba(50, 62, 58, 0.18);
  transition:
    opacity 160ms var(--ease-out),
    transform 180ms var(--spring),
    box-shadow 180ms var(--ease-out);
}

.cultural-pointer.is-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.cultural-pointer.is-clicking {
  transform: translate(-50%, -50%) scale(1.28);
  box-shadow:
    0 0 0 14px rgba(34, 128, 100, 0.1),
    0 18px 46px rgba(50, 62, 58, 0.24);
}

.cultural-draw-status {
  position: absolute;
  left: clamp(18px, 3vw, 54px);
  top: clamp(16px, 2.5vh, 34px);
  z-index: 2;
  padding: 8px 12px;
  border: 1px solid rgba(21, 24, 28, 0.1);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(21, 24, 28, 0.62);
  background: rgba(255, 255, 255, 0.64);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.cultural-rotor {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  z-index: 1;
  transform: translateY(-50%);
  perspective: 1500px;
}

.cultural-card-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(26px, 4vw, 74px);
  width: auto;
  max-width: none;
  margin: 0 auto;
  padding: clamp(28px, 4vh, 48px) 10vw clamp(34px, 4.8vh, 58px);
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: thin;
  scrollbar-color: rgba(17, 101, 168, 0.42) rgba(21, 24, 28, 0.05);
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.cultural-card-row::-webkit-scrollbar {
  height: 5px;
}

.cultural-card-row::-webkit-scrollbar-track {
  background: rgba(21, 24, 28, 0.06);
}

.cultural-card-row::-webkit-scrollbar-thumb {
  background: rgba(17, 101, 168, 0.42);
  border-radius: 999px;
}

.cultural-card {
  flex: 0 0 clamp(190px, 14vw, 250px);
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 0.68;
  min-height: clamp(216px, 31vh, 340px);
  overflow: hidden;
  border: 1px solid rgba(196, 230, 255, 0.74);
  border-radius: 28px;
  color: #f3fbff;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.28), transparent 33%),
    radial-gradient(circle at 50% 26%, rgba(108, 202, 255, 0.42), transparent 36%),
    linear-gradient(180deg, #277fbd 0%, #145f9a 46%, #0c355f 100%);
  box-shadow:
    0 30px 76px rgba(39, 105, 150, 0.22),
    0 5px 20px rgba(22, 76, 116, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.62);
  cursor: pointer;
  --card-tilt: 0deg;
  --card-lift: 0px;
  --card-scale: 1;
  --card-fade: 1;
  transform: translateY(var(--card-lift)) rotateY(var(--card-tilt)) scale(var(--card-scale));
  transform-style: preserve-3d;
  scroll-snap-align: center;
  opacity: var(--card-fade);
  transition:
    transform 360ms var(--ease-out),
    border-color 220ms var(--ease-out),
    box-shadow 220ms var(--ease-out),
    opacity 220ms var(--ease-out);
}

.cultural-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(226, 246, 255, 0.38);
  border-radius: 20px;
  background:
    linear-gradient(135deg, transparent 35%, rgba(255, 255, 255, 0.2), transparent 65%),
    repeating-linear-gradient(90deg, transparent 0 16px, rgba(230, 247, 255, 0.13) 16px 17px);
  backface-visibility: hidden;
}

.cultural-card__back {
  position: relative;
  z-index: 1;
  max-width: calc(100% - 28px);
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.2rem, 3.2vw, 4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  color: rgba(245, 251, 255, 0.94);
  text-align: center;
  white-space: nowrap;
  text-shadow: 0 12px 30px rgba(2, 24, 48, 0.36);
}

.cultural-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.08) rotateY(180deg);
  backface-visibility: hidden;
  transition: opacity 260ms var(--ease-out);
}

.cultural-card:hover,
.cultural-card:focus-visible,
.cultural-card.is-gesture-hover {
  outline: none;
  border-color: rgba(170, 228, 255, 0.9);
  transform: translateY(calc(var(--card-lift) - 8px)) rotateY(var(--card-tilt)) scale(calc(var(--card-scale) + 0.025));
  box-shadow:
    0 38px 82px rgba(38, 112, 166, 0.3),
    0 0 42px rgba(66, 170, 238, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.cultural-poster-stage.is-gesture-hover .cultural-poster-close,
.cultural-poster-close.is-gesture-hover {
  transform: scale(1.06);
  box-shadow:
    0 18px 42px rgba(50, 62, 58, 0.18),
    0 0 0 8px rgba(34, 128, 100, 0.08);
}

.cultural-card.is-drawn {
  z-index: 3;
  border-color: rgba(170, 228, 255, 0.94);
  transform: translateY(calc(var(--card-lift) - 4px)) rotateY(180deg) scale(calc(var(--card-scale) + 0.015));
  animation: drawCardReveal 520ms var(--ease-out);
}

.cultural-card.is-drawn img {
  opacity: 1;
}

.cultural-card.is-drawn .cultural-card__back,
.cultural-card.is-drawn::after {
  opacity: 0;
}

.cultural-poster-stage {
  position: fixed;
  left: 50%;
  top: max(92px, 9vh);
  z-index: 46;
  display: grid;
  place-items: center;
  width: min(92vw, 1240px);
  height: min(72vh, calc(100vh - 150px));
  margin: 0;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) scale(0.84);
  transition:
    opacity 360ms var(--ease-out),
    transform 680ms var(--spring),
    filter 360ms var(--ease-out);
  filter: blur(12px) saturate(0.86);
}

.cultural-poster-stage.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) scale(1);
  filter: blur(0) saturate(1.05);
  animation: posterReveal 880ms var(--spring);
}

.cultural-poster-close {
  position: absolute;
  right: 14px;
  top: 14px;
  z-index: 2;
  padding: 9px 14px;
  border: 1px solid rgba(21, 24, 28, 0.1);
  border-radius: 999px;
  color: rgba(21, 24, 28, 0.72);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 16px 34px rgba(50, 62, 58, 0.12);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  cursor: pointer;
}

.cultural-poster-stage img {
  max-width: min(100%, 1120px);
  max-height: min(74vh, 760px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 18px;
  box-shadow:
    0 42px 120px rgba(64, 74, 70, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.74),
    inset 0 1px 0 rgba(255, 255, 255, 0.92);
}

.cultural-slide {
  position: absolute;
  inset: auto 22px 22px;
  margin: 0;
  height: 38%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(42px) scale(0.96);
  transition:
    opacity 760ms var(--ease-out),
    transform 860ms var(--spring),
    filter 760ms var(--ease-out);
  filter: blur(8px) saturate(0.8);
}

.cultural-slide.is-active {
  opacity: 0;
  visibility: hidden;
  transform: translateX(0) scale(1);
  filter: blur(0) saturate(1.04);
  animation: culturalSlideIn 960ms var(--spring);
}

.cultural-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 22px 60px rgba(0, 0, 0, 0.42);
}

.cultural-progress {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 16px;
  height: 3px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(101, 255, 190, 0.12);
}

.cultural-progress::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(101, 255, 190, 0.12), #65ffbe);
  transform-origin: left;
  animation: culturalProgress 4.8s linear infinite;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(180deg, rgba(250, 252, 255, 0.06), rgba(255, 255, 255, 0.16)),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.38), transparent 36%),
    radial-gradient(circle at 80% 18%, rgba(187, 222, 255, 0.18), transparent 20%);
}

.back-to-start {
  position: fixed;
  left: 22px;
  top: 22px;
  z-index: 40;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 999px;
  color: rgba(24, 43, 73, 0.9);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(225, 245, 255, 0.42)),
    rgba(255, 255, 255, 0.18);
  box-shadow:
    0 12px 32px rgba(70, 112, 156, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  cursor: pointer;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 220ms var(--ease-out),
    visibility 220ms var(--ease-out),
    transform 260ms var(--spring),
    box-shadow 200ms var(--ease-out);
}

body.has-entered-experience .back-to-start {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

body.has-open-feature .back-to-start {
  opacity: 1;
  visibility: visible;
  color: #eafff7;
  border-color: rgba(101, 255, 190, 0.32);
  background:
    linear-gradient(135deg, rgba(17, 38, 31, 0.9), rgba(3, 9, 7, 0.74)),
    rgba(101, 255, 190, 0.08);
  box-shadow:
    0 18px 42px rgba(0, 0, 0, 0.34),
    0 0 28px rgba(101, 255, 190, 0.12),
    inset 0 1px 0 rgba(226, 255, 243, 0.14);
  transform: translateY(0);
}

body.feature-cultural .back-to-start {
  color: rgba(21, 24, 28, 0.74);
  border-color: rgba(21, 24, 28, 0.12);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(245, 247, 246, 0.56)),
    rgba(255, 255, 255, 0.52);
  box-shadow:
    0 18px 42px rgba(50, 62, 58, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.back-to-start:hover,
.back-to-start:focus-visible,
.back-to-start.is-gesture-hover {
  outline: none;
  transform: translateY(-2px) scale(1.035);
  box-shadow:
    0 16px 38px rgba(70, 112, 156, 0.24),
    0 0 24px rgba(83, 234, 255, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.app-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(125deg, rgba(255, 255, 255, 0.34), transparent 24%, transparent 72%, rgba(255, 255, 255, 0.22)),
    radial-gradient(circle at 28% 24%, rgba(255, 255, 255, 0.74), transparent 18%),
    radial-gradient(circle at 74% 66%, rgba(255, 255, 255, 0.28), transparent 20%);
  mix-blend-mode: screen;
  opacity: 0.78;
}

.app-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06) 28%, rgba(239, 247, 255, 0.22) 100%);
}

.background-orbs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(24px);
  opacity: 0.7;
  mix-blend-mode: screen;
}

.orb-a {
  top: -16vh;
  left: -8vw;
  width: 34vw;
  height: 34vw;
  background: radial-gradient(circle, rgba(118, 209, 255, 0.64) 0%, rgba(118, 209, 255, 0) 70%);
  animation: floatOrb 18s ease-in-out infinite;
}

.orb-b {
  right: -12vw;
  top: 12vh;
  width: 28vw;
  height: 28vw;
  background: radial-gradient(circle, rgba(255, 183, 205, 0.58) 0%, rgba(255, 183, 205, 0) 70%);
  animation: floatOrb 22s ease-in-out infinite reverse;
}

.orb-c {
  bottom: -18vh;
  left: 30vw;
  width: 36vw;
  height: 36vw;
  background: radial-gradient(circle, rgba(180, 255, 228, 0.62) 0%, rgba(180, 255, 228, 0) 70%);
  animation: floatOrb 26s ease-in-out infinite;
}

.hero-panel,
.copy-card,
.camera-panel,
.status-bar,
.floor-popup,
.loading-card,
.fallback-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--panel-border);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.12) 42%, rgba(255, 255, 255, 0.22) 100%);
  backdrop-filter: saturate(150%) blur(12px);
  box-shadow:
    0 24px 64px rgba(107, 141, 181, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    inset 0 -8px 18px rgba(172, 203, 236, 0.12);
}

.hero-panel::before,
.copy-card::before,
.camera-panel::before,
.status-bar::before,
.floor-popup::before,
.loading-card::before,
.fallback-card::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.06) 36%, rgba(132, 198, 255, 0.08) 68%, rgba(255, 255, 255, 0.3));
  pointer-events: none;
  opacity: 0.92;
}

.hero-panel::after,
.copy-card::after,
.camera-panel::after,
.floor-popup::after,
.loading-card::after,
.fallback-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  backdrop-filter: url(#liquid-glass-filter) saturate(165%) blur(10px);
  -webkit-backdrop-filter: url(#liquid-glass-filter) saturate(165%) blur(10px);
  pointer-events: none;
}

.hero-panel {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 3;
  width: min(460px, calc(100vw - 248px));
  padding: 28px 30px;
  border-radius: 34px;
}

.eyebrow,
.copy-label,
.camera-kicker,
.loading-kicker,
.fallback-label {
  position: relative;
  z-index: 1;
  margin: 0;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: #4a8ef3;
}

.hero-panel h1,
.camera-header h2,
.loading-card h2,
.fallback-card h2 {
  position: relative;
  z-index: 1;
  margin: 10px 0 12px;
  font-family: "Noto Serif SC", serif;
  font-weight: 700;
  line-height: 1.15;
}

.hero-panel h1 {
  font-size: clamp(2rem, 3vw, 3.35rem);
}

.hero-copy,
.camera-hint,
.copy-card li,
.loading-card p,
.fallback-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.hero-tips {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-tips span,
.tracking-badge {
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.66);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.2));
  backdrop-filter: saturate(180%) blur(18px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86);
  font-size: calc(0.82rem * var(--font-scale));
}

.font-panel {
  position: fixed;
  top: 92px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
  width: min(260px, calc(100vw - 32px));
  padding: 12px 14px;
  border-radius: 20px;
  border: 1px solid var(--panel-border);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.12) 42%, rgba(255, 255, 255, 0.22) 100%);
  backdrop-filter: saturate(150%) blur(12px);
  box-shadow:
    0 20px 48px rgba(107, 141, 181, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  overflow: hidden;
}

.font-panel::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.06) 36%, rgba(132, 198, 255, 0.08) 68%, rgba(255, 255, 255, 0.3));
  pointer-events: none;
  opacity: 0.92;
}

.font-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  backdrop-filter: url(#liquid-glass-filter) saturate(165%) blur(10px);
  -webkit-backdrop-filter: url(#liquid-glass-filter) saturate(165%) blur(10px);
  pointer-events: none;
}

.font-panel__row,
.font-panel__controls {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.font-panel__row {
  justify-content: space-between;
  margin-bottom: 8px;
}

.font-panel__label {
  font-size: calc(0.68rem * var(--font-scale));
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #4a8ef3;
}

.font-panel__value {
  font-size: calc(0.74rem * var(--font-scale));
  color: var(--text-soft);
}

.font-panel__controls {
  gap: 8px;
}

.settings-divider {
  position: relative;
  z-index: 1;
  height: 1px;
  margin: 10px 0 8px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(132, 198, 255, 0.26), rgba(255, 255, 255, 0));
}

.font-panel__button {
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.2));
  color: var(--text-main);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.font-panel__slider {
  flex: 1;
  accent-color: var(--accent);
}

.status-bar {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: min(460px, calc(100vw - 32px));
  max-width: calc(100vw - 32px);
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--text-main);
  transition: border-color 220ms var(--ease-out), transform 220ms var(--ease-out);
}

.status-bar.is-warning {
  border-color: rgba(255, 181, 91, 0.55);
}

.status-bar.is-error {
  border-color: rgba(255, 109, 137, 0.5);
}

.status-bar.is-success {
  border-color: rgba(31, 191, 143, 0.46);
}

.status-dot {
  position: relative;
  z-index: 1;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 8px rgba(98, 166, 255, 0.18);
  animation: pulseDot 1.8s ease-in-out infinite;
}

#statusText {
  position: relative;
  z-index: 1;
}

.experience-stage {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  align-items: stretch;
  width: 100%;
  min-height: 100vh;
  padding: 170px 24px 48px;
}

.stage-copy {
  display: flex;
  align-items: flex-end;
  padding-bottom: 24px;
}

.copy-card {
  width: min(280px, 100%);
  padding: 24px;
  border-radius: 32px;
}

.copy-card ul {
  position: relative;
  z-index: 1;
  margin: 16px 0 0;
  padding-left: 18px;
}

.copy-card li + li {
  margin-top: 10px;
}

.scene-section {
  position: relative;
  min-height: calc(100vh - 218px);
  border-radius: 34px;
  overflow: hidden;
}

.scene-container,
.gesture-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.scene-container canvas {
  display: block;
}

.gesture-layer {
  pointer-events: none;
}

.hotspot-layer {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.model-hotspot {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 86px;
  padding: 7px 10px 7px 8px;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 8px;
  color: rgba(24, 43, 73, 0.96);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(220, 242, 255, 0.34));
  box-shadow:
    0 10px 28px rgba(70, 112, 156, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.92);
  pointer-events: auto;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -50%) scale(0.92);
  transition:
    opacity 180ms var(--ease-out),
    transform 220ms var(--spring),
    border-color 180ms var(--ease-out),
    background-color 180ms var(--ease-out);
}

.model-hotspot.is-visible {
  opacity: 1;
  visibility: visible;
}

.model-hotspot::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #5fb4ff;
  box-shadow:
    0 0 0 5px rgba(95, 180, 255, 0.18),
    0 0 18px rgba(95, 180, 255, 0.46);
  animation: hotspotPulse 2.4s ease-in-out infinite;
}

.model-hotspot__text {
  font-size: calc(0.78rem * var(--font-scale));
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.model-hotspot.is-active {
  border-color: rgba(31, 191, 143, 0.46);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(191, 255, 230, 0.36));
  transform: translate(-50%, -50%) scale(1.08);
}

.model-hotspot.is-active::before {
  background: #1fbf8f;
  box-shadow:
    0 0 0 7px rgba(31, 191, 143, 0.18),
    0 0 24px rgba(31, 191, 143, 0.52);
}

.scene-section.is-floor-switching .model-hotspot.is-active {
  animation: hotspotLift 720ms var(--spring);
}

.scene-section.is-floor-switching .scene-container canvas {
  animation: floorSceneFocus 720ms var(--ease-out);
}

.camera-panel {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 5;
  width: min(var(--camera-panel-size), calc(100vw - 40px));
  padding: 18px;
  border-radius: 32px;
  animation: breathePanel 4.8s ease-in-out infinite;
}

.camera-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.camera-header > div {
  flex: 1;
  min-width: 0;
}

.camera-header h2 {
  font-size: calc(1.15rem * var(--font-scale));
  margin: 0.25rem 0 0;
}

.tracking-badge {
  margin-top: 4px;
  color: var(--text-main);
  flex-shrink: 0;
  min-width: 108px;
  text-align: center;
  white-space: nowrap;
}

.tracking-badge.is-active {
  border-color: rgba(31, 191, 143, 0.32);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.64), rgba(31, 191, 143, 0.12));
  color: var(--success);
}

.tracking-badge.is-muted {
  color: var(--text-soft);
}

.tracking-badge.is-error {
  border-color: rgba(255, 109, 137, 0.32);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.64), rgba(255, 109, 137, 0.1));
  color: var(--danger);
}

.camera-frame {
  position: relative;
  margin: 16px auto 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.08)),
    radial-gradient(circle at top, rgba(136, 218, 255, 0.12), transparent 54%);
  backdrop-filter: saturate(150%) blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), inset 0 -16px 30px rgba(101, 167, 234, 0.08);
}

.input-video,
.video-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.scanline {
  position: absolute;
  inset: auto 0 0;
  height: 26%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(141, 197, 255, 0.28) 70%, rgba(255, 255, 255, 0) 100%);
  animation: scan 4.2s linear infinite;
  pointer-events: none;
}

.camera-hint {
  margin-top: 12px;
  font-size: calc(0.92rem * var(--font-scale));
}

.popup-host {
  position: fixed;
  left: 50%;
  bottom: 44px;
  z-index: 7;
  transform: translateX(-50%);
  width: min(560px, calc(100vw - 32px));
  pointer-events: none;
}

.floor-popup {
  pointer-events: auto;
  padding: 20px 22px 22px;
  border-radius: 36px;
  transform-origin: center bottom;
  animation: popupIn 420ms var(--spring) forwards;
}

.floor-popup.is-leaving {
  animation: popupOut 260ms var(--ease-in) forwards;
}

.popup-topline {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.popup-topline h3 {
  margin: 8px 0 0;
  font-family: "Noto Serif SC", serif;
  font-size: calc(1.5rem * var(--font-scale));
}

.popup-close {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 999px;
  color: var(--text-main);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.26));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
  cursor: pointer;
  transition: transform 180ms var(--spring), background-color 180ms var(--ease-out);
}

.popup-close:hover {
  transform: scale(1.06);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.3));
}

.popup-body {
  position: relative;
  z-index: 1;
  margin-top: 10px;
  color: var(--text-main);
  line-height: 1.65;
  font-size: 1rem;
  text-align: center;
}

.popup-meter {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 3px;
  margin-top: 16px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(141, 197, 255, 0.18);
}

.popup-meter span {
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: left center;
  background: linear-gradient(90deg, #5fb4ff, #8affdf);
  animation: meterShrink 5s linear forwards;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.7), rgba(234, 245, 255, 0.84));
  transition: opacity 340ms var(--ease-out), visibility 340ms var(--ease-out);
}

.loading-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-card {
  width: min(460px, calc(100vw - 32px));
  padding: 32px 28px 28px;
  border-radius: 38px;
  text-align: center;
}

.loading-ring {
  position: relative;
  display: inline-block;
  width: 74px;
  height: 74px;
  margin-bottom: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.72);
}

.loading-ring::before,
.loading-ring::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.loading-ring::before {
  border: 2px solid transparent;
  border-top-color: #67bbff;
  animation: spin 1.2s linear infinite;
}

.loading-ring::after {
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.76);
}

.fallback-card {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 6;
  width: min(420px, calc(100% - 32px));
  padding: 26px;
  border-radius: 34px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.34), rgba(255, 224, 233, 0.18));
  transform: translate(-50%, -50%);
}

.hidden {
  display: none !important;
}

.glass-button {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 999px;
  color: var(--text-main);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(166, 221, 255, 0.28));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92), 0 10px 26px rgba(145, 186, 234, 0.18);
  cursor: pointer;
  transition: transform 200ms var(--spring), border-color 220ms var(--ease-out), background-color 220ms var(--ease-out);
}

.glass-button:hover {
  transform: translateY(-1px) scale(1.01);
  border-color: rgba(125, 188, 255, 0.6);
}

@media (max-width: 1100px) {
  .feature-shell {
    grid-template-columns: 1fr;
    width: min(780px, calc(100vw - 36px));
    gap: 18px;
  }

  .feature-page--hologram .feature-shell {
    width: min(960px, calc(100vw - 36px));
    padding: 76px 0 30px;
  }

  .feature-page--hologram .feature-copy {
    grid-template-columns: 1fr;
    gap: 12px;
    min-height: 0;
    padding: 18px 20px;
    border-radius: 28px;
  }

  .feature-page--hologram .feature-copy h2 {
    font-size: clamp(2.1rem, 9vw, 4.2rem);
  }

  .feature-page--hologram .feature-meta {
    justify-content: flex-start;
  }

  .feature-page--hologram .hologram-stage {
    min-height: min(68vh, 680px);
  }

  .feature-page--cultural .feature-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    width: min(920px, calc(100vw - 36px));
    min-height: 100svh;
    padding: 74px 0 28px;
  }

  .feature-copy {
    padding: 24px;
  }

  .feature-page--cultural .feature-copy {
    grid-template-columns: 1fr;
    gap: 12px;
    min-height: 0;
    padding: 18px 20px;
    border-radius: 26px;
  }

  .feature-copy h2 {
    font-size: clamp(2.4rem, 12vw, 4.8rem);
  }

  .feature-page--cultural .feature-copy h2 {
    font-size: clamp(1.8rem, 8vw, 3.2rem);
  }

  .hologram-stage,
  .cultural-carousel {
    min-height: 48vh;
  }

  .cultural-card-row {
    padding: 32px 14vw 42px;
    gap: 28px;
  }

  .cultural-card {
    flex-basis: clamp(176px, 24vw, 220px);
    min-height: 210px;
  }

  .cultural-poster-stage {
    width: min(86vw, 620px);
    height: min(58vh, 580px);
  }

  .start-content {
    width: min(1060px, calc(100vw - 36px));
    padding-top: 15vh;
  }

  .start-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body {
    overflow-y: auto;
  }

  .hero-panel {
    position: relative;
    top: auto;
    left: auto;
    width: calc(100vw - 32px);
    margin: 16px 16px 0;
  }

  .status-bar {
    top: 120px;
  }

  .experience-stage {
    grid-template-columns: 1fr;
    padding: 184px 16px 24px;
  }

  .stage-copy {
    order: 2;
    padding-top: 18px;
  }

  .copy-card {
    width: 100%;
  }

  .camera-panel {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    margin-top: 20px;
  }

  .font-panel {
    top: 168px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(260px, calc(100vw - 32px));
  }


  .camera-frame {
    width: 100%;
  }

  .scene-section {
    min-height: 62vh;
  }
}

@media (max-width: 720px) {
  .feature-page::before {
    inset: 10px;
    border-radius: 22px;
  }

  .feature-shell {
    width: calc(100vw - 24px);
  }

  .feature-page--hologram .feature-shell {
    width: calc(100vw - 20px);
    padding: 68px 0 20px;
  }

  .feature-page--hologram .feature-copy {
    padding: 14px 16px;
    border-radius: 22px;
  }

  .feature-page--hologram .feature-kicker {
    margin-bottom: -8px;
  }

  .feature-page--hologram .feature-copy h2 {
    font-size: clamp(1.9rem, 12vw, 3.3rem);
  }

  .feature-page--hologram .feature-copy p:not(.feature-kicker) {
    font-size: 0.88rem;
    line-height: 1.55;
  }

  .feature-page--hologram .feature-meta {
    gap: 8px;
  }

  .feature-page--hologram .feature-meta span {
    padding: 7px 9px;
    font-size: 0.58rem;
  }

  .feature-page--hologram .hologram-stage {
    min-height: calc(100svh - 232px);
    border-radius: 24px;
  }

  .feature-page--cultural .feature-shell {
    width: calc(100vw - 20px);
    padding: 68px 0 20px;
  }

  .feature-page--cultural .feature-copy {
    padding: 14px 16px;
    border-radius: 22px;
  }

  .feature-page--cultural .feature-kicker {
    margin-bottom: -8px;
  }

  .feature-page--cultural .feature-copy p:not(.feature-kicker) {
    font-size: 0.88rem;
    line-height: 1.55;
  }

  .feature-page--cultural .feature-meta {
    gap: 8px;
  }

  .feature-page--cultural .feature-meta span {
    padding: 7px 9px;
    font-size: 0.58rem;
  }

  .feature-copy p:not(.feature-kicker) {
    margin-top: 16px;
  }

  .feature-meta {
    margin-top: 20px;
  }

  .hologram-stage,
  .cultural-carousel {
    min-height: 42vh;
    border-radius: 22px;
  }

  .feature-page--cultural .cultural-draw-stage {
    height: calc(100svh - 212px);
    min-height: 380px;
  }

  .cultural-slide {
    inset: auto 12px 16px;
    height: 34%;
  }

  .cultural-draw-stage {
    padding: 0;
  }

  .cultural-card-row {
    gap: 18px;
    padding: 26px 16vw 36px;
  }

  .cultural-card {
    flex-basis: 168px;
    min-height: 206px;
    border-radius: 22px;
  }

  .cultural-card__back {
    font-size: 2.1rem;
  }

  .cultural-poster-stage {
    width: min(92vw, 420px);
    height: min(52vh, 470px);
  }

  .cultural-scan-video {
    width: 112px;
  }

  .cultural-draw-status {
    max-width: calc(100% - 150px);
    font-size: 0.66rem;
  }

  .start-content {
    width: calc(100vw - 32px);
    padding-top: 13vh;
  }

  .start-title {
    font-size: clamp(2rem, 10vw, 3.4rem);
  }

  .start-copy {
    margin-bottom: 24px;
  }

  .start-nav {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .start-nav__link {
    min-height: 94px;
  }

  .status-bar {
    top: auto;
    bottom: 16px;
    transform: translateX(-50%);
  }

  .font-panel {
    top: 72px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(260px, calc(100vw - 32px));
  }


  .hero-panel {
    padding: 24px 22px;
  }

  .experience-stage {
    padding-top: 24px;
  }

  .scene-section {
    min-height: 54vh;
  }

  .camera-panel {
    padding: 16px;
  }

  .camera-frame {
    width: 100%;
  }

  .floor-popup {
    padding: 18px 18px 20px;
    border-radius: 20px;
  }
}

@keyframes floatOrb {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(1.8vw, 2.4vh, 0) scale(1.06);
  }
}

@keyframes breathePanel {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(3px);
  }
}

@keyframes pulseDot {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.95;
  }
  50% {
    transform: scale(1.16);
    opacity: 1;
  }
}

@keyframes scan {
  0% {
    transform: translateY(-220%);
  }
  100% {
    transform: translateY(220%);
  }
}

@keyframes popupIn {
  from {
    opacity: 0;
    transform: translateY(26px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes popupOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
}

@keyframes meterShrink {
  from {
    transform: scaleX(1);
  }
  to {
    transform: scaleX(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes startLinkIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes liquidBounce {
  0% {
    transform: scale(0.96);
  }
  42% {
    transform: scale(1.06, 1.12);
  }
  68% {
    transform: scale(0.99, 1.04);
  }
  100% {
    transform: scale(1.035, 1.08);
  }
}

@keyframes softJellyPulse {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  36% {
    opacity: 1;
    transform: translateY(-9px) scale(1.035, 0.985);
  }
  62% {
    opacity: 1;
    transform: translateY(-6px) scale(0.992, 1.018);
  }
  100% {
    opacity: 1;
    transform: translateY(-8px) scale(1.018);
  }
}

@keyframes cursorHaloBreath {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.72;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes featureScanline {
  0%,
  100% {
    transform: translateX(-36%);
    opacity: 0;
  }
  48%,
  58% {
    opacity: 1;
  }
  60% {
    transform: translateX(36%);
    opacity: 0;
  }
}

@keyframes hologramScan {
  0%,
  100% {
    transform: translateY(-24%);
    opacity: 0.22;
  }
  50% {
    transform: translateY(24%);
    opacity: 0.72;
  }
}

@keyframes culturalSlideIn {
  0% {
    transform: translateX(48px) scale(0.94);
  }
  52% {
    transform: translateX(-8px) scale(1.015);
  }
  100% {
    transform: translateX(0) scale(1);
  }
}

@keyframes drawCardReveal {
  0% {
    transform: translateY(var(--card-lift)) scale(var(--card-scale)) rotateY(0deg);
  }
  50% {
    transform: translateY(calc(var(--card-lift) - 6px)) scale(calc(var(--card-scale) + 0.025)) rotateY(96deg);
  }
  78% {
    transform: translateY(calc(var(--card-lift) - 3px)) scale(calc(var(--card-scale) + 0.012)) rotateY(176deg);
  }
  100% {
    transform: translateY(calc(var(--card-lift) - 4px)) scale(calc(var(--card-scale) + 0.015)) rotateY(180deg);
  }
}

@keyframes posterReveal {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(34px) scale(0.76) rotateX(10deg);
  }
  54% {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px) scale(1.04) rotateX(0deg);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1) rotateX(0deg);
  }
}

@keyframes culturalProgress {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@keyframes hotspotPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.92;
  }
  50% {
    transform: scale(1.18);
    opacity: 1;
  }
}

@keyframes hotspotLift {
  0% {
    transform: translate(-50%, -50%) scale(0.96);
  }
  55% {
    transform: translate(-50%, -56%) scale(1.14);
  }
  100% {
    transform: translate(-50%, -50%) scale(1.08);
  }
}

@keyframes floorSceneFocus {
  0%,
  100% {
    filter: saturate(1);
  }
  45% {
    filter: saturate(1.14) brightness(1.04);
  }
}

@media (prefers-reduced-motion: reduce) {
  .model-hotspot,
  .model-hotspot::before,
  .scene-section.is-floor-switching .model-hotspot.is-active,
  .scene-section.is-floor-switching .scene-container canvas,
  .feature-page::after,
  .hologram-scan,
  .cultural-slide.is-active,
  .cultural-card.is-drawn,
  .cultural-poster-stage.is-visible,
  .cultural-progress::before,
  .start-nav__link,
  .start-nav__surface {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}