/* Home — 展卷入礼 */
.home-hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  background: #050505 url("../images/visual/main-board-bg.webp") center / cover no-repeat;
  color: var(--paper-light);
  isolation: isolate;
}

.home-hero::before {
  position: absolute;
  z-index: 0;
  inset: -8%;
  background: url("../images/visual/main-board-bg.webp") center / cover no-repeat;
  filter: blur(30px) saturate(0.9) brightness(0.54);
  opacity: 0.72;
  content: "";
  transform: scale(1.06);
}

.home-hero::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.42), transparent 22%, transparent 72%, rgba(0, 0, 0, 0.6)),
    radial-gradient(circle at 50% 48%, transparent 38%, rgba(0, 0, 0, 0.32) 100%);
  content: "";
  pointer-events: none;
}

.home-hero__ambient {
  position: absolute;
  z-index: 0;
  inset: -20%;
  background:
    radial-gradient(circle at 24% 30%, rgba(201, 52, 36, 0.18), transparent 26%),
    radial-gradient(circle at 74% 68%, rgba(231, 184, 90, 0.14), transparent 31%);
  filter: blur(70px);
  opacity: 0.72;
}

.hero-board {
  --hero-parallax-x: 0px;
  --hero-parallax-y: 0px;
  --hero-scroll-y: 0px;
  position: absolute;
  z-index: 1;
  inset: clamp(4.85rem, 7vw, 6.35rem) clamp(1rem, 4vw, 4rem) clamp(5.15rem, 7vw, 6.6rem);
  display: grid;
  place-items: center;
  margin: 0;
  overflow: visible;
  background: transparent;
  transform: translate3d(var(--hero-parallax-x), calc(var(--hero-parallax-y) + var(--hero-scroll-y)), 0);
  transition: transform 760ms var(--ease-out-expo);
  animation: hero-board-enter 1200ms var(--ease-out-expo) both;
  will-change: transform;
}

.hero-board img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.26);
  user-select: none;
  -webkit-user-drag: none;
}

@keyframes hero-board-enter {
  from { opacity: 0; transform: translate3d(0, 2.25rem, 0) scale(0.985); }
  to { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
}

.home-hero__grain {
  position: absolute;
  z-index: 2;
  inset: 0;
  opacity: 0.1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.home-hero__meta {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 1.35rem;
  left: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 2rem;
  color: rgba(251, 247, 237, 0.72);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  line-height: 1.55;
  text-transform: uppercase;
}

.home-hero__label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.home-hero__dot {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--spark-light);
  box-shadow: 0 0 1.2rem rgba(232, 91, 50, 0.9);
}

.home-hero__edition {
  display: grid;
  gap: 0.12rem;
  text-align: center;
}

.home-hero__edition p:first-child {
  color: var(--paper-light);
  font-family: var(--font-editorial);
  font-size: 0.8rem;
  letter-spacing: 0.13em;
}

.home-hero__scroll {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 0.8rem;
}

.home-hero__scroll-line {
  position: relative;
  width: 3.6rem;
  height: 1px;
  overflow: hidden;
  background: rgba(251, 247, 237, 0.26);
}

.home-hero__scroll-line::after {
  position: absolute;
  inset: 0;
  background: var(--paper-light);
  content: "";
  transform: translateX(-100%);
  animation: hero-scroll-line 2.1s var(--ease-soft) infinite;
}

@keyframes hero-scroll-line {
  0% { transform: translateX(-100%); }
  55%, 100% { transform: translateX(100%); }
}

.home-prologue {
  position: relative;
  overflow: hidden;
  padding: clamp(7rem, 13vw, 13rem) 0 clamp(6rem, 10vw, 10rem);
  background: var(--paper-light);
}

.home-prologue__texture {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 34%, rgba(201, 52, 36, 0.08) 34% 34.18%, transparent 34.18%),
    linear-gradient(0deg, transparent 0 62%, rgba(231, 184, 90, 0.18) 62% 62.2%, transparent 62.2%),
    url("../images/visual/endpaper-bg.webp") center / cover no-repeat;
  opacity: 0.44;
  pointer-events: none;
}

.home-prologue__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(20rem, 0.9fr);
  gap: clamp(3rem, 8vw, 10rem);
  align-items: start;
}

.home-prologue__heading .eyebrow {
  margin-bottom: 2.4rem;
}

.home-prologue__copy {
  display: grid;
  gap: 2rem;
  padding-top: clamp(3rem, 7vw, 7.5rem);
}

.home-prologue__copy > p:not(.lead) {
  max-width: 39rem;
  color: var(--earth);
}

.gift-meanings {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(3rem, 6vw, 6.5rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.gift-meaning {
  min-height: 19rem;
  padding: clamp(2rem, 3.7vw, 3.6rem);
  border-right: 1px solid var(--line);
}

.gift-meaning:last-child {
  border-right: 0;
}

.gift-meaning > span {
  display: inline-grid;
  width: 2.4rem;
  height: 2.4rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--spark);
  font-size: 0.68rem;
  font-weight: 700;
}

.gift-meaning h2 {
  margin-top: clamp(3.6rem, 7vw, 6.8rem);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 3.25rem);
  font-weight: 500;
}

.gift-meaning p {
  max-width: 20rem;
  margin-top: 1rem;
  color: var(--earth);
  font-family: var(--font-editorial);
}

.narrative-section {
  padding: clamp(6.5rem, 11vw, 11rem) 0;
  overflow: hidden;
  background: var(--paper);
}

.narrative-section__header {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) 1fr;
  gap: 2rem;
  align-items: end;
}

.narrative-line {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-top: clamp(4rem, 8vw, 8.5rem);
}

.narrative-line::before {
  position: absolute;
  top: 1.15rem;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line);
  content: "";
}

.narrative-line li {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 0.38rem;
  padding: 3.45rem 1rem 0 0;
}

.narrative-line li::before {
  position: absolute;
  top: 0.82rem;
  left: 0;
  width: 0.72rem;
  height: 0.72rem;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--spark);
  box-shadow: 0 0 0 1px var(--spark);
  content: "";
}

.narrative-line span {
  color: var(--spark);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
}

.narrative-line strong {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.8vw, 1.8rem);
  font-weight: 500;
}

.narrative-line em {
  color: var(--earth);
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.12em;
}

.six-li {
  padding: clamp(7rem, 12vw, 12rem) 0 clamp(6rem, 10vw, 10rem);
  background: var(--paper-light);
}

.six-li__intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.75fr);
  gap: clamp(3rem, 8vw, 9rem);
  align-items: end;
}

.six-li__intro .eyebrow {
  margin-bottom: 2rem;
}

.six-li__layout {
  display: grid;
  grid-template-columns: 10.5rem minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 6rem);
  margin-top: clamp(6rem, 11vw, 11rem);
}

.chapter-rail {
  position: sticky;
  top: calc(var(--header-height) + 2.1rem);
  align-self: start;
  min-height: calc(100svh - var(--header-height) - 4rem);
  padding: 1.2rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.chapter-rail__label {
  margin-bottom: 1.5rem;
  color: var(--earth);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.chapter-rail ol {
  display: grid;
}

.chapter-rail a {
  display: grid;
  grid-template-columns: 1.7rem 1fr;
  align-items: center;
  min-height: 3.45rem;
  border-bottom: 1px solid rgba(43, 33, 28, 0.08);
  color: color-mix(in srgb, var(--earth) 68%, transparent);
  transition:
    color 260ms var(--ease-soft),
    transform 320ms var(--ease-out-expo);
}

.chapter-rail a span {
  font-size: 0.62rem;
}

.chapter-rail a strong {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
}

.chapter-rail a:hover,
.chapter-rail a.is-active {
  color: var(--spark);
  transform: translateX(0.35rem);
}

.chapter-rail__progress {
  position: absolute;
  right: -1px;
  bottom: 0;
  left: auto;
  width: 2px;
  height: 100%;
  overflow: hidden;
  background: rgba(43, 33, 28, 0.08);
}

.chapter-rail__progress span {
  display: block;
  width: 100%;
  height: 0;
  background: var(--spark);
  transition: height 480ms var(--ease-out-expo);
}

.chapter-stack {
  min-width: 0;
}

.chapter {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.82fr);
  gap: clamp(2.5rem, 6.5vw, 8rem);
  min-height: clamp(44rem, 82svh, 61rem);
  align-items: center;
  padding: clamp(5rem, 10vw, 10rem) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-height) + 2rem);
}

.chapter:last-child {
  border-bottom: 1px solid var(--line);
}

.chapter--observe,
.chapter--make,
.chapter--spread {
  grid-template-columns: minmax(20rem, 0.82fr) minmax(0, 1.08fr);
}

.chapter__visual {
  position: relative;
  min-width: 0;
}

.chapter__content {
  position: relative;
  z-index: 2;
  max-width: 34rem;
}

.chapter__number {
  color: var(--spark);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.chapter__content h3 {
  margin-top: 1.6rem;
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

.chapter__question {
  margin-top: 2.4rem;
  font-family: var(--font-editorial);
  font-size: clamp(1.35rem, 2vw, 2.05rem);
  line-height: 1.45;
}

.chapter__summary {
  margin-top: 1.45rem;
  color: var(--earth);
  line-height: 1.85;
}

.chapter__keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.8rem;
}

.chapter__keywords li {
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--earth);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}

.chapter-open {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2.6rem;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.chapter-open .round-arrow {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--spark);
  transition:
    transform 320ms var(--ease-out-expo),
    background-color 260ms var(--ease-soft),
    color 260ms var(--ease-soft);
}

.chapter-open:hover .round-arrow {
  background: var(--spark);
  color: var(--paper-light);
  transform: translateX(0.25rem) rotate(-45deg);
}

.chapter__floating-index {
  position: absolute;
  z-index: -1;
  right: -0.04em;
  bottom: -0.16em;
  color: rgba(201, 52, 36, 0.1);
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 22rem);
  line-height: 0.72;
  pointer-events: none;
}

.chapter-art,
.chapter-atlas,
.chapter-system,
.chapter-space,
.chapter-network {
  width: min(100%, 46rem);
  aspect-ratio: 1 / 1.08;
  box-shadow: var(--shadow-soft);
}

.chapter-art img,
.chapter-space img {
  object-fit: contain;
}

.chapter-atlas,
.chapter-system,
.chapter-network {
  position: relative;
}

.chapter-atlas > img,
.chapter-system > img,
.chapter-network > img {
  object-fit: cover;
}

.chapter-atlas__labels {
  position: absolute;
  inset: 8%;
}

.chapter-atlas__labels span {
  position: absolute;
  display: inline-flex;
  min-height: 2.4rem;
  align-items: center;
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(43, 33, 28, 0.18);
  border-radius: 999px;
  background: rgba(251, 247, 237, 0.76);
  color: var(--ink);
  font-family: var(--font-editorial);
  font-size: clamp(0.78rem, 1.2vw, 1.05rem);
  box-shadow: 0 10px 30px rgba(43, 33, 28, 0.1);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.chapter-atlas__labels span:nth-child(1) { top: 6%; left: 7%; }
.chapter-atlas__labels span:nth-child(2) { top: 24%; right: 5%; }
.chapter-atlas__labels span:nth-child(3) { top: 51%; left: 18%; }
.chapter-atlas__labels span:nth-child(4) { right: 10%; bottom: 18%; }
.chapter-atlas__labels span:nth-child(5) { bottom: 2%; left: 4%; }

.chapter-system__flow {
  position: absolute;
  inset: 10%;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.chapter-system__flow span {
  display: grid;
  min-height: 8rem;
  place-items: center;
  padding: 1rem;
  border: 1px solid rgba(251, 247, 237, 0.36);
  background: rgba(104, 70, 56, 0.28);
  color: var(--paper-light);
  font-family: var(--font-editorial);
  font-size: clamp(0.8rem, 1.25vw, 1.1rem);
  line-height: 1.65;
  text-align: center;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.chapter-system__flow i {
  position: relative;
  width: 2rem;
  height: 1px;
  background: rgba(251, 247, 237, 0.7);
}

.chapter-system__flow i::after {
  position: absolute;
  top: -0.19rem;
  right: 0;
  width: 0.4rem;
  height: 0.4rem;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  content: "";
  transform: rotate(45deg);
}

.chapter-products {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  grid-template-rows: repeat(2, minmax(12rem, 1fr));
  gap: 0.8rem;
  width: min(100%, 48rem);
  aspect-ratio: 1 / 1.02;
}

.chapter-products figure {
  min-width: 0;
  min-height: 0;
  box-shadow: 0 14px 34px rgba(43, 33, 28, 0.1);
}

.chapter-products figure:first-child {
  grid-row: 1 / 3;
}

.chapter-products img {
  padding: clamp(0.2rem, 0.55vw, 0.5rem);
  object-fit: contain;
  background: #f4ecdf;
}

.chapter-products figure:nth-child(2) img,
.chapter-products figure:nth-child(3) img {
  background: #f7f1e7;
}

.chapter-network__nodes {
  position: absolute;
  inset: 9%;
}

.chapter-network__nodes::before,
.chapter-network__nodes::after {
  position: absolute;
  inset: 50% 6% auto;
  height: 1px;
  background: rgba(251, 247, 237, 0.52);
  content: "";
  transform: rotate(-13deg);
}

.chapter-network__nodes::after {
  transform: rotate(15deg);
}

.chapter-network__nodes span {
  position: absolute;
  display: grid;
  width: clamp(3.1rem, 6vw, 5.2rem);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(251, 247, 237, 0.58);
  border-radius: 50%;
  background: rgba(201, 52, 36, 0.62);
  color: var(--paper-light);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.8rem);
  box-shadow: 0 12px 30px rgba(43, 33, 28, 0.22);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.chapter-network__nodes span:nth-child(1) { top: 7%; left: 8%; }
.chapter-network__nodes span:nth-child(2) { top: 19%; left: 45%; }
.chapter-network__nodes span:nth-child(3) { top: 4%; right: 4%; }
.chapter-network__nodes span:nth-child(4) { bottom: 12%; left: 12%; }
.chapter-network__nodes span:nth-child(5) { right: 34%; bottom: 4%; }
.chapter-network__nodes span:nth-child(6) { right: 2%; bottom: 22%; }

.stamp-section {
  padding: clamp(7rem, 12vw, 12rem) 0;
  overflow: hidden;
  background: var(--night-soft);
  color: var(--paper-light);
}

.stamp-section__grid {
  display: grid;
  grid-template-columns: minmax(20rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(3rem, 8vw, 9rem);
  align-items: center;
}

.stamp-section .eyebrow,
.stamp-section .lead {
  color: rgba(251, 247, 237, 0.64);
}

.stamp-section .eyebrow {
  margin-bottom: 2rem;
}

.stamp-section__intro .lead {
  margin-top: 2rem;
}

.text-button {
  margin-top: 2rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid currentColor;
  color: rgba(251, 247, 237, 0.76);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.stamp-board {
  position: relative;
  padding: clamp(1rem, 2.6vw, 2.4rem);
  border: 1px solid rgba(251, 247, 237, 0.12);
  background:
    linear-gradient(135deg, rgba(201, 52, 36, 0.1), transparent 48%),
    rgba(251, 247, 237, 0.025);
}

.stamp-progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(251, 247, 237, 0.12);
  border-left: 1px solid rgba(251, 247, 237, 0.12);
}

.stamp-progress li {
  position: relative;
  display: grid;
  min-height: clamp(10rem, 16vw, 14rem);
  place-items: center;
  border-right: 1px solid rgba(251, 247, 237, 0.12);
  border-bottom: 1px solid rgba(251, 247, 237, 0.12);
  color: rgba(251, 247, 237, 0.25);
  transition:
    color 520ms var(--ease-soft),
    background-color 520ms var(--ease-soft);
}

.stamp-progress li::before {
  position: absolute;
  width: 54%;
  aspect-ratio: 1;
  border: 1px solid currentColor;
  content: "";
  transform: rotate(45deg) scale(0.78);
  transition: transform 620ms var(--ease-out-expo);
}

.stamp-progress li > span {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
}

.stamp-progress li strong {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 4.6rem);
  font-weight: 500;
}

.stamp-progress li em {
  position: absolute;
  right: 0.7rem;
  bottom: 0.65rem;
  font-size: 0.56rem;
  font-style: normal;
  letter-spacing: 0.1em;
}

.stamp-progress li.is-visited {
  background: rgba(201, 52, 36, 0.12);
  color: var(--grain);
}

.stamp-progress li.is-visited::before {
  transform: rotate(45deg) scale(1);
}

.stamp-complete {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.9rem;
  margin-top: 1.25rem;
  color: rgba(251, 247, 237, 0.54);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}

.stamp-complete img {
  width: 2.8rem;
  opacity: 0.28;
  transition:
    opacity 520ms var(--ease-soft),
    transform 620ms var(--ease-out-expo);
}

.stamp-complete.is-complete {
  color: var(--grain);
}

.stamp-complete.is-complete img {
  opacity: 1;
  transform: rotate(-6deg) scale(1.12);
}

.home-next {
  padding: clamp(5rem, 9vw, 9rem) 0;
  background: var(--paper);
}

.home-next__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.home-next__card {
  position: relative;
  display: grid;
  min-height: clamp(30rem, 48vw, 43rem);
  align-content: end;
  overflow: hidden;
  padding: clamp(2rem, 4.5vw, 4.5rem);
  color: var(--paper-light);
  isolation: isolate;
}

.home-next__card::before,
.home-next__card::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  transition: transform 850ms var(--ease-out-expo);
}

.home-next__card--products::before {
  background: linear-gradient(180deg, transparent 12%, rgba(23, 20, 19, 0.86)), url("../images/products-v3/rice-overview-05.webp") center / cover;
}

.home-next__card--about::before {
  background: linear-gradient(180deg, transparent 12%, rgba(23, 20, 19, 0.88)), url("../images/gallery/main-board.webp") center / cover;
}

.home-next__card::after {
  background: linear-gradient(145deg, rgba(201, 52, 36, 0.18), transparent 50%);
}

.home-next__card:hover::before {
  transform: scale(1.035);
}

.home-next__card > span {
  margin-bottom: 1.2rem;
  color: rgba(251, 247, 237, 0.62);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.home-next__card h2 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 5.7rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.98;
}

.home-next__card p {
  max-width: 31rem;
  margin-top: 1.5rem;
  color: rgba(251, 247, 237, 0.68);
}

.home-next__card .round-arrow {
  position: absolute;
  right: clamp(2rem, 4.5vw, 4.5rem);
  bottom: clamp(2rem, 4.5vw, 4.5rem);
  width: 3.2rem;
  height: 3.2rem;
  background: var(--paper-light);
  color: var(--spark);
  transition: transform 360ms var(--ease-out-expo);
}

.home-next__card:hover .round-arrow {
  transform: translate(0.25rem, -0.25rem) rotate(-45deg);
}

/* Six-Li dialog */
.culture-dialog__shell {
  inset: auto;
  top: 50%;
  left: 50%;
  width: min(90vw, 104rem);
  height: min(84svh, 58rem);
  background: var(--paper-light);
  transform: translate(-50%, calc(-50% + 2rem)) scale(0.985);
}

.dialog-backdrop.is-open .culture-dialog__shell {
  transform: translate(-50%, -50%) scale(1);
}

.culture-dialog__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(25rem, 1fr);
  height: 100%;
}

.culture-dialog__visual {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: clamp(1rem, 2.2vw, 2rem);
  background:
    radial-gradient(circle at 20% 12%, rgba(201, 52, 36, 0.24), transparent 32%),
    var(--night);
  color: var(--paper-light);
}

.culture-dialog__visual::after {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(251, 247, 237, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(251, 247, 237, 0.045) 1px, transparent 1px);
  background-size: 3.5rem 3.5rem;
  content: "";
  pointer-events: none;
}

.culture-dialog__visual-head {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  color: rgba(251, 247, 237, 0.58);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.culture-dialog__media {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(12, 1fr);
  gap: clamp(0.55rem, 1.2vw, 1rem);
  height: calc(100% - 2.1rem);
  margin-top: 1.4rem;
  transition:
    opacity 280ms var(--ease-soft),
    transform 420ms var(--ease-out-expo);
}

.culture-media-card {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(251, 247, 237, 0.12);
  background: rgba(251, 247, 237, 0.04);
}

.culture-media-card:first-child {
  grid-area: 1 / 1 / 13 / 10;
}

.culture-media-card:nth-child(2) {
  grid-area: 2 / 9 / 8 / 13;
  z-index: 2;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.32);
}

.culture-media-card:nth-child(3) {
  grid-area: 8 / 8 / 13 / 13;
  z-index: 3;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.32);
}

.culture-media-card:nth-child(4) {
  grid-area: 8 / 4 / 13 / 9;
  z-index: 2;
}

.culture-media-card img {
  width: 100%;
  height: 100%;
  object-fit: var(--media-fit, cover);
  transition: transform 900ms var(--ease-out-expo);
}

.culture-media-card:hover img {
  transform: scale(1.025);
}

.culture-media-card figcaption {
  position: absolute;
  right: 0.65rem;
  bottom: 0.65rem;
  left: 0.65rem;
  padding: 0.65rem 0.75rem;
  background: rgba(23, 20, 19, 0.72);
  color: rgba(251, 247, 237, 0.74);
  font-size: 0.6rem;
  line-height: 1.55;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.culture-dialog__content {
  min-width: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: clamp(5.5rem, 8vw, 8rem) clamp(2rem, 5vw, 5rem) 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(43, 33, 28, 0.24) transparent;
}

.culture-dialog__heading,
.culture-dialog__sections,
.culture-dialog__nav {
  transition:
    opacity 260ms var(--ease-soft),
    transform 420ms var(--ease-out-expo);
}

.culture-dialog__shell.is-switching .culture-dialog__media,
.culture-dialog__shell.is-switching .culture-dialog__heading,
.culture-dialog__shell.is-switching .culture-dialog__sections,
.culture-dialog__shell.is-switching .culture-dialog__nav {
  opacity: 0;
  transform: translateY(1rem);
}

.culture-dialog__number {
  color: var(--dialog-accent, var(--spark));
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.culture-dialog__heading h2 {
  margin-top: 1.4rem;
  font-family: var(--font-display);
  font-size: clamp(4rem, 7.5vw, 7.7rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

.culture-dialog__question {
  margin-top: 2.1rem;
  font-family: var(--font-editorial);
  font-size: clamp(1.35rem, 2.1vw, 2rem);
  line-height: 1.5;
}

.culture-dialog__introduction {
  margin-top: 1.4rem;
  color: var(--earth);
  line-height: 1.85;
}

.culture-dialog__keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.6rem;
}

.culture-dialog__keywords li {
  padding: 0.42rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--earth);
  font-size: 0.64rem;
  letter-spacing: 0.07em;
}

.culture-dialog__sections {
  display: grid;
  gap: 3.5rem;
  margin-top: 4.5rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--line);
}

.culture-detail-section > h3 {
  margin-bottom: 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.7vw, 2.8rem);
  font-weight: 500;
  line-height: 1.2;
}

.culture-detail-section > p {
  color: var(--earth);
  line-height: 1.88;
}

.culture-detail-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.culture-detail-card {
  min-height: 11rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  background: rgba(242, 234, 221, 0.42);
}

.culture-detail-card > span {
  color: var(--dialog-accent, var(--spark));
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.culture-detail-card h4 {
  margin-top: 2.1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
}

.culture-detail-card p {
  margin-top: 0.65rem;
  color: var(--earth);
  font-size: 0.86rem;
  line-height: 1.7;
}

.culture-detail-flow {
  display: grid;
  gap: 0.65rem;
}

.culture-detail-flow li {
  position: relative;
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  align-items: center;
  min-height: 4rem;
  padding: 0.7rem 1rem 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-editorial);
  font-size: 1rem;
}

.culture-detail-flow li span {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border-radius: 50%;
  background: var(--dialog-accent, var(--spark));
  color: var(--paper-light);
  font-family: var(--font-body);
  font-size: 0.58rem;
}

.culture-detail-matrix {
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.culture-detail-matrix table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
}

.culture-detail-matrix th,
.culture-detail-matrix td {
  padding: 1rem 0.85rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.culture-detail-matrix th {
  color: var(--earth);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.culture-detail-matrix td {
  font-size: 0.82rem;
  line-height: 1.65;
}

.culture-detail-quote {
  position: relative;
  padding: 2.2rem;
  border-left: 4px solid var(--dialog-accent, var(--spark));
  background: var(--paper);
}

.culture-detail-quote h3 {
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 500;
}

.culture-detail-quote p {
  color: var(--earth);
  font-family: var(--font-editorial);
  font-size: 1.05rem;
  line-height: 1.8;
}

.culture-detail-quote a {
  display: inline-flex;
  margin-top: 1.25rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid currentColor;
  color: var(--dialog-accent, var(--spark));
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.07em;
}

.culture-dialog__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 5rem;
  border-top: 1px solid var(--line);
}

.culture-dialog__nav button {
  display: grid;
  min-height: 8.5rem;
  align-content: center;
  padding: 1.5rem 1.1rem;
  text-align: left;
}

.culture-dialog__nav button + button {
  border-left: 1px solid var(--line);
  text-align: right;
}

.culture-dialog__nav span {
  color: var(--earth);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
}

.culture-dialog__nav strong {
  margin-top: 0.4rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  transition: color 220ms var(--ease-soft);
}

.culture-dialog__nav button:hover strong {
  color: var(--dialog-accent, var(--spark));
}

@media (max-width: 1180px) {
  .chapter {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.82fr);
    gap: 3rem;
  }

  .chapter--observe,
  .chapter--make,
  .chapter--spread {
    grid-template-columns: minmax(18rem, 0.82fr) minmax(0, 1fr);
  }

  .culture-dialog__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(23rem, 0.85fr);
  }
}

@media (max-width: 1023px) {
  .home-prologue__grid,
  .six-li__intro,
  .stamp-section__grid {
    grid-template-columns: 1fr;
  }

  .home-prologue__copy {
    max-width: 42rem;
    padding-top: 0;
  }

  .narrative-section__header {
    grid-template-columns: 1fr;
  }

  .narrative-line {
    overflow-x: auto;
    grid-template-columns: repeat(6, minmax(9.5rem, 1fr));
    padding-bottom: 1.2rem;
    scrollbar-width: thin;
  }

  .six-li__layout {
    grid-template-columns: 1fr;
  }

  .chapter-rail {
    display: none;
  }

  .chapter,
  .chapter--observe,
  .chapter--make,
  .chapter--spread {
    grid-template-columns: 1fr 0.78fr;
    min-height: auto;
  }

  .chapter__content h3 {
    font-size: clamp(3.8rem, 10vw, 7rem);
  }

  .culture-dialog__layout {
    display: block;
    height: auto;
    min-height: 100%;
  }

  .culture-dialog__shell {
    width: min(94vw, 70rem);
    height: min(92svh, 62rem);
    overflow-y: auto;
  }

  .culture-dialog__visual {
    min-height: min(62rem, 66svh);
  }

  .culture-dialog__content {
    overflow: visible;
    padding-bottom: 0;
  }
}

@media (max-width: 767px) {
  .home-hero {
    min-height: 100svh;
  }

  .hero-board {
    inset: 4.85rem 0.7rem 5.1rem;
  }

  .hero-board img {
    max-width: 100%;
    max-height: 100%;
  }

  .home-hero__meta {
    grid-template-columns: 1fr auto;
    gap: 1rem;
    bottom: 0.8rem;
  }

  .home-hero__edition {
    display: none;
  }

  .home-hero__scroll {
    gap: 0.45rem;
  }

  .home-hero__scroll-line {
    width: 1.8rem;
  }

  .home-prologue__grid {
    gap: 2.5rem;
  }

  .gift-meanings {
    grid-template-columns: 1fr;
  }

  .gift-meaning {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .gift-meaning:last-child {
    border-bottom: 0;
  }

  .gift-meaning h2 {
    margin-top: 3rem;
  }

  .narrative-line {
    margin-right: calc(var(--page-pad) * -1);
    padding-right: var(--page-pad);
  }

  .six-li__intro {
    gap: 2rem;
  }

  .six-li__layout {
    margin-top: 4.5rem;
  }

  .chapter,
  .chapter--observe,
  .chapter--make,
  .chapter--spread {
    display: flex;
    min-height: auto;
    flex-direction: column;
    gap: 2.4rem;
    padding: 5.5rem 0;
  }

  .chapter--observe .chapter__content,
  .chapter--make .chapter__content,
  .chapter--spread .chapter__content {
    order: 2;
  }

  .chapter--observe .chapter__visual,
  .chapter--make .chapter__visual,
  .chapter--spread .chapter__visual {
    order: 1;
  }

  .chapter__content {
    max-width: none;
  }

  .chapter__content h3 {
    font-size: clamp(4rem, 23vw, 6.4rem);
  }

  .chapter__question {
    margin-top: 1.6rem;
  }

  .chapter-art,
  .chapter-atlas,
  .chapter-system,
  .chapter-space,
  .chapter-network,
  .chapter-products {
    width: 100%;
  }

  .chapter-system__flow {
    inset: 8%;
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .chapter-system__flow span {
    min-height: 4rem;
  }

  .chapter-system__flow i {
    width: 1px;
    height: 1.1rem;
    margin-inline: auto;
  }

  .chapter-system__flow i::after {
    top: auto;
    right: -0.18rem;
    bottom: 0;
    transform: rotate(135deg);
  }

  .stamp-progress {
    grid-template-columns: repeat(2, 1fr);
  }

  .stamp-progress li {
    min-height: 9.5rem;
  }

  .home-next__grid {
    grid-template-columns: 1fr;
  }

  .home-next__card {
    min-height: 32rem;
  }

  .culture-dialog__shell {
    top: 0;
    left: 0;
    width: 100%;
    height: 100svh;
    border-radius: 0;
    transform: translateY(2rem) scale(0.995);
  }

  .dialog-backdrop.is-open .culture-dialog__shell {
    transform: translateY(0) scale(1);
  }

  .culture-dialog__visual {
    min-height: 54svh;
    padding: 1rem;
  }

  .culture-dialog__media {
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
  }

  .culture-media-card:first-child {
    grid-area: 1 / 1 / 9 / 7;
  }

  .culture-media-card:nth-child(2) {
    grid-area: 2 / 6 / 6 / 9;
  }

  .culture-media-card:nth-child(3) {
    grid-area: 6 / 5 / 9 / 9;
  }

  .culture-media-card:nth-child(4) {
    grid-area: 6 / 2 / 9 / 6;
  }

  .culture-media-card figcaption {
    display: none;
  }

  .culture-dialog__content {
    padding: 4.5rem var(--page-pad) 0;
  }

  .culture-dialog__heading h2 {
    font-size: clamp(4.3rem, 24vw, 7rem);
  }

  .culture-dialog__sections {
    margin-top: 3.5rem;
  }

  .culture-detail-cards {
    grid-template-columns: 1fr;
  }

  .culture-detail-card {
    min-height: auto;
  }

  .culture-dialog__nav {
    margin-right: calc(var(--page-pad) * -1);
    margin-left: calc(var(--page-pad) * -1);
  }

  .culture-dialog__nav button {
    min-height: 7rem;
    padding-inline: var(--page-pad);
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-hero__scroll-line::after {
    animation: none;
    transform: none;
  }

  .hero-board {
    --hero-parallax-x: 0px !important;
    --hero-parallax-y: 0px !important;
    --hero-scroll-y: 0px !important;
    animation: none !important;
    transform: none !important;
  }
}