/* 薄明 HAKUMEI。色は濃い焦げ茶、紙の白、琥珀の3つ。余白と写真で見せる */
:root {
  --ink: #1C1714;
  --paper: #EFE9DF;
  --amber: #E0AE72;
  --amber-deep: #A9682A;
  --on-ink: #F3EEE6;
  --on-ink-soft: #B9AFA3;
  --on-paper-soft: #5C5248;
  --line-on-ink: rgba(243, 238, 230, .13);
  --line-on-paper: rgba(28, 23, 20, .22);
  --gutter: clamp(1.25rem, 2.2vw, 2.25rem);
  --bar: 3rem;
  --screen: calc(100svh - var(--bar));
  --mincho: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", serif;
  --didot: Didot, "Bodoni 72", "Hoefler Text", Georgia, serif;
  --sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --ease-inout: cubic-bezier(.76, 0, .24, 1);
}

html { background: var(--ink); }
body {
  color: var(--on-ink);
  background: var(--ink);
  font: 300 .9375rem/2 var(--sans);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}
main { overflow-x: clip; }
h3 { font-weight: inherit; }
dl, dd, dt { margin: 0; }
a:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* 大きな明朝の見出し。字詰めは詰め、行間は狭く */
.display {
  font-family: var(--mincho);
  font-size: clamp(2.25rem, 1.2rem + 4.1vw, 5.25rem);
  font-weight: 400;
  font-feature-settings: "palt";
  letter-spacing: -.012em;
  line-height: 1.26;
}
.label {
  font: 600 .6875rem/1.7 var(--sans);
  letter-spacing: .14em;
}
.ink {
  background-color: var(--ink);
  background-image: linear-gradient(to right, transparent calc(50% - .5px), var(--line-on-ink) 0, var(--line-on-ink) calc(50% + .5px), transparent 0);
}

/* 細い矢印つきのリンク */
.more {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  min-width: 13rem;
  min-height: 2.75rem;
  margin-top: 1.5rem;
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.more svg { width: .75rem; height: .75rem; fill: none; stroke: currentColor; stroke-width: 1; transition: transform .4s var(--ease); }
.more:hover svg, .more:focus-visible svg { transform: translate(3px, -3px); }

/* 最初の画面 ------------------------------------------------ */
.hero {
  position: relative;
  min-height: 34rem;
  height: var(--screen);
  overflow: hidden;
  background: var(--ink);
}
.hero__frame { position: absolute; inset: 0; }
.hero__photo { position: absolute; inset: -9% 0; display: block; }
.hero__photo img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%; }
.hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(16, 13, 11, .5), rgba(16, 13, 11, 0) 22%, rgba(16, 13, 11, 0) 46%, rgba(16, 13, 11, .72));
}

.site {
  position: absolute;
  inset: 0 0 auto;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 4.25rem;
  padding: .25rem var(--gutter);
}
.site__nav { display: flex; gap: 2rem; font-size: .75rem; font-weight: 500; letter-spacing: .08em; }
.site__nav a { display: inline-flex; align-items: center; min-height: 2.75rem; text-decoration: none; background: linear-gradient(currentColor, currentColor) 0 calc(50% + .8rem) / 0 1px no-repeat; transition: background-size .5s var(--ease); }
.site__nav a:hover, .site__nav a:focus-visible { background-size: 100% 1px; }
.site__logo {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-left: .42em;
  font: 400 1.3125rem/1 var(--didot);
  letter-spacing: .42em;
  text-decoration: none;
}
.site__sunset { grid-column: 3; justify-self: end; font-size: .75rem; letter-spacing: .08em; }
.site__sunset b { margin-left: .5em; font: 400 1.0625rem/1 var(--didot); letter-spacing: .04em; }

.hero__copy {
  position: absolute;
  inset: auto 0 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    ". title"
    "next lead";
  align-items: end;
  column-gap: var(--gutter);
  row-gap: 1.5rem;
  padding: 0 var(--gutter) clamp(1.25rem, 2.6vw, 2.25rem);
}
.hero__title { grid-area: title; font-size: clamp(2.75rem, 1.4rem + 5.2vw, 6.25rem); line-height: 1.2; }
.hero__title .ph { display: block; overflow: hidden; padding-block: .06em; margin-block: -.06em; }
.hero__title .ph > span { display: block; }
.hero__lead { grid-area: lead; max-width: 24rem; font-size: .875rem; line-height: 1.9; }
.hero__next { grid-area: next; display: inline-flex; align-items: center; gap: .875rem; justify-self: start; min-height: 2.75rem; font-size: .75rem; font-weight: 500; letter-spacing: .08em; text-decoration: none; }
.hero__next svg { width: .75rem; height: 1.25rem; fill: none; stroke: currentColor; stroke-width: 1; }

/* 読み込みの間の時計と文字。JavaScript が無い時と動きを減らす時は出さない */
.intro { display: none; }

/* 序文 ------------------------------------------------------ */
.about {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: calc(var(--gutter) * 2);
  padding: clamp(5rem, 11vw, 11rem) var(--gutter) clamp(4rem, 8vw, 8rem);
}
.about__photo-area { padding-top: clamp(0rem, 6vw, 6rem); }
.about__photo { width: min(52%, 24rem); overflow: hidden; }
.about__photo img { width: 100%; }
.about__lead {
  font-family: var(--mincho);
  font-size: clamp(1.375rem, 1rem + 1.45vw, 2.25rem);
  font-feature-settings: "palt";
  font-weight: 400;
  line-height: 1.72;
  letter-spacing: .005em;
  word-break: auto-phrase;
  text-wrap: pretty;
}
.hour__title, .step p, .hour__note p, .estate__detail p, .section-view__body p, .about__body p { word-break: auto-phrase; }
.about__label-wrap { display: inline-block; width: 8.6em; }
.about__label-wrap .label { font-size: .6875rem; vertical-align: .32em; }
.about__foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem var(--gutter);
  margin-top: clamp(3rem, 5vw, 5.5rem);
}
.about__tag { color: var(--on-ink-soft); font-size: .75rem; font-weight: 500; letter-spacing: .08em; line-height: 1.8; }
.about__body { color: var(--on-ink); font-size: .875rem; }
.split-title {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  column-gap: calc(var(--gutter) * 2);
  margin-top: clamp(6rem, 13vw, 13rem);
}
.split-title__text { display: contents; }
.split-title__text .ph { display: block; overflow: hidden; padding-block: .06em; margin-block: -.06em; }
.split-title__text .ph > span { display: block; }
.split-title__note { grid-column: 2; margin-top: 1.25rem; color: var(--on-ink-soft); font-size: .75rem; font-weight: 500; letter-spacing: .08em; line-height: 1.8; }

/* 四つの時刻。既定は上から順に並ぶ。動かせる時だけ重ねて移り変わらせる ---- */
.hours__list { margin: 0; padding: 0; list-style: none; }
.hour { position: relative; height: var(--screen); min-height: 32rem; overflow: hidden; }
.hour__photo { position: absolute; inset: 0; display: block; }
.hour__photo img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%; }
.hour__photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(16, 13, 11, 0) 42%, rgba(16, 13, 11, .78));
}
.hour__text {
  position: absolute;
  inset: auto 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  column-gap: var(--gutter);
  padding: 0 var(--gutter) clamp(1.5rem, 2.8vw, 2.5rem);
}
.hour__time {
  font: 400 clamp(4.5rem, 2rem + 11vw, 12.5rem)/.86 var(--didot);
  letter-spacing: -.02em;
  font-feature-settings: "lnum";
}
.hour__title {
  font-family: var(--mincho);
  font-size: clamp(1.375rem, 1rem + 1.2vw, 2.125rem);
  font-feature-settings: "palt";
  line-height: 1.45;
}
.hour__note { max-width: 32rem; }
.hour__note p { margin-top: .75rem; font-size: .875rem; line-height: 1.9; }
.hours__arc, .hours__sun { display: none; }

/* 断面図 ---------------------------------------------------- */
.section-view { color: var(--ink); background: var(--paper); }
.section-view__stage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  overflow: hidden;
}
.section-view__shadow { position: absolute; inset: -8% 0; pointer-events: none; }
.section-view__shadow img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; opacity: .78; }
.section-view__figure { position: relative; margin-inline: calc(var(--gutter) * -.5) 0; }
.drawing { display: block; width: 100%; height: auto; overflow: visible; }
.drawing .draw { fill: none; stroke: var(--ink); stroke-width: 1.2; stroke-linecap: round; }
.drawing .thick { stroke-width: 2.2; }
.drawing .cut { fill: var(--ink); }
.drawing__light { fill: var(--amber-deep); fill-opacity: .2; }
.drawing__ray { stroke: var(--amber-deep); stroke-width: 1.4; }
.drawing__ray--sky { stroke-dasharray: 2 7; stroke-linecap: round; }
.drawing__sun { fill: var(--amber-deep); }
.drawing__note {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-top: 1rem;
  padding-left: calc(var(--gutter) * .5);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .06em;
}
.drawing__clock { font: 400 clamp(2rem, 1.4rem + 1.6vw, 3rem)/1 var(--didot); font-variant-numeric: lining-nums; min-width: 2.3em; }
.drawing__depth { position: absolute; left: 58.8%; top: 37.5%; width: 14.4%; color: var(--on-paper-soft); font-size: .6875rem; font-weight: 500; letter-spacing: .08em; line-height: 1.5; text-align: center; transform: translateY(-100%); }
.section-view__text { position: relative; }
.section-view__title { font-size: clamp(2rem, 1.2rem + 2.7vw, 3.75rem); }
.section-view__title .ph { display: block; }
.section-view__body { display: grid; gap: 1rem; margin-top: clamp(1.25rem, 2.4vw, 2.25rem); max-width: 29rem; color: #2C2520; font-size: .875rem; font-weight: 400; }

/* 物件 ------------------------------------------------------ */
.estate { position: relative; }
.estate__stage { position: relative; height: var(--screen); min-height: 34rem; overflow: hidden; }
.estate__photo { position: absolute; inset: -6% 0; display: block; }
.estate__photo img { width: 100%; height: 100%; object-fit: cover; }
.estate__stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(14, 12, 10, .1), rgba(14, 12, 10, 0) 40%, rgba(14, 12, 10, .8));
  pointer-events: none;
}
.estates__words {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-content: start;
  align-items: center;
  padding: clamp(5rem, 16vh, 11rem) var(--gutter) 0;
  font-size: clamp(2rem, 1.2rem + 3.3vw, 4.5rem);
  text-shadow: 0 0 2.5rem rgba(20, 12, 6, .45), 0 0 .5rem rgba(20, 12, 6, .25);
}
.estate--first .estate__stage::after { background: linear-gradient(to bottom, rgba(14, 12, 10, .32), rgba(14, 12, 10, 0) 45%, rgba(14, 12, 10, .8)); }
.estates__word--b { text-align: center; }
.estates__word--c { text-align: right; }
.estate__info {
  position: absolute;
  inset: auto 0 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "no detail"
    "name detail";
  align-items: end;
  column-gap: var(--gutter);
  padding: 0 var(--gutter) clamp(1.5rem, 2.8vw, 2.5rem);
}
.estate__no { grid-area: no; display: flex; gap: 1.25rem; margin-bottom: .75rem; }
.estate__name { grid-area: name; font-size: clamp(2.5rem, 1.4rem + 4.2vw, 5.5rem); line-height: 1.15; }
.estate__detail { grid-area: detail; max-width: 32rem; font-size: .875rem; line-height: 1.9; }
.spec { display: flex; flex-wrap: wrap; gap: .25rem 2rem; margin-top: 1rem; padding-top: .75rem; border-top: 1px solid rgba(243, 238, 230, .4); }
.spec div { display: flex; align-items: baseline; gap: .625rem; }
.spec dt { font-size: .6875rem; font-weight: 600; letter-spacing: .1em; }
.spec dd { font: 400 1.0625rem/1.5 var(--mincho); font-feature-settings: "palt"; }

/* ご案内 ---------------------------------------------------- */
.visit {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: var(--gutter);
  padding: clamp(5rem, 10vw, 10rem) var(--gutter);
  color: var(--ink);
  background: var(--paper);
}
.visit__photo-area { position: relative; }
.visit__photo { position: sticky; top: calc(var(--bar) + 2rem); width: min(66%, 32rem); overflow: hidden; }
.visit__photo img { width: 100%; }
.visit__title { margin-top: 1rem; font-size: clamp(2rem, 1.2rem + 2.9vw, 4rem); }
.visit__title .ph { display: block; overflow: hidden; padding-block: .06em; margin-block: -.06em; }
.visit__title .ph > span { display: block; }
.steps { margin: clamp(2.5rem, 5vw, 5rem) 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-on-paper); }
.step {
  position: relative;
  display: grid;
  grid-template-columns: minmax(5.5rem, 1fr) 3fr;
  column-gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line-on-paper);
}
.step::before {
  content: "";
  position: absolute;
  inset: auto 0 -1px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .7s var(--ease);
}
.step:hover::before { transform: scaleX(1); }
.step__time { color: var(--on-paper-soft); font-size: .75rem; font-weight: 500; letter-spacing: .06em; line-height: 1.7; padding-top: .35rem; }
.step h3 { font-family: var(--mincho); font-size: clamp(1.25rem, 1rem + .8vw, 1.75rem); font-feature-settings: "palt"; line-height: 1.4; }
.step p { margin-top: .25rem; color: #2C2520; font-size: .875rem; font-weight: 400; line-height: 1.9; }
.visit__call { display: grid; gap: 1.25rem; margin-top: clamp(2.5rem, 4vw, 4rem); font-size: .875rem; font-weight: 400; }
.visit__call small { display: block; color: var(--on-paper-soft); font-size: .75rem; }
.visit__call b { font: 400 clamp(1.75rem, 1.3rem + 1.4vw, 2.75rem)/1.2 var(--didot); font-variant-numeric: lining-nums; }

/* 終わりの章 ------------------------------------------------ */
.coda { padding-bottom: clamp(3rem, 5vw, 5rem); background-image: none; }
.coda__strip { height: clamp(14rem, 34vw, 30rem); overflow: hidden; }
.coda__strip picture { display: block; height: 118%; }
.coda__strip img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 40%; }
.coda__ghost {
  margin-top: clamp(1.5rem, 3vw, 3rem);
  color: #2E2622;
  font: 400 clamp(3.25rem, 19.4vw, 24rem)/1 var(--didot);
  letter-spacing: -.01em;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}
.coda__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: 2rem var(--gutter);
  padding: clamp(2rem, 4vw, 4rem) var(--gutter) 0;
}
.coda__nav { margin: 0; padding: 0; list-style: none; font-family: var(--mincho); font-size: clamp(1.625rem, 1.2rem + 1.4vw, 2.5rem); font-feature-settings: "palt"; line-height: 1.5; }
.coda__nav a { display: inline-flex; min-height: 2.75rem; align-items: center; text-decoration: none; transition: color .3s ease-out; }
.coda__nav a:hover, .coda__nav a:focus-visible { color: var(--amber); }
.coda__company { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem var(--gutter); align-content: start; font-size: .875rem; }
.coda__company dd { margin-top: .5rem; font-family: var(--mincho); }

/* 狭い画面 -------------------------------------------------- */
.site__nav a { white-space: nowrap; }
@media (max-width: 63.99rem) {
  .site { grid-template-columns: auto 1fr; }
  .site__nav { display: none; }
  .site__logo { grid-column: 1; padding-left: 0; }
}
@media (max-width: 47.99rem) {
  .ink { background-image: linear-gradient(to right, transparent calc(14% - .5px), var(--line-on-ink) 0, var(--line-on-ink) calc(14% + .5px), transparent 0); }
  .site { grid-template-columns: auto 1fr; min-height: 3.5rem; }
  .site__nav { display: none; }
  .site__logo { grid-column: 1; padding-left: 0; font-size: 1.125rem; }
  .site__sunset { grid-column: 2; font-size: .6875rem; }
  .hero__copy { grid-template-columns: 1fr; grid-template-areas: "title" "lead" "next"; row-gap: .75rem; }
  .hero__photo img, .hour__photo img { object-position: 50% 50%; }
  .hero__lead { font-size: .8125rem; }
  .hero__next { margin-top: .25rem; }

  .about { grid-template-columns: 1fr; row-gap: 3rem; padding-top: 4rem; }
  .about__photo-area { order: 2; padding: 0 0 0 calc(14% + .75rem); }
  .about__photo { width: 72%; }
  .about__text { padding-left: calc(14% + .75rem); }
  .about__label-wrap { display: block; width: auto; margin-bottom: 1rem; }
  .about__foot { grid-template-columns: 1fr; gap: 1rem; }
  .split-title { order: 3; grid-template-columns: 1fr; margin-top: 2rem; }
  .split-title__note { grid-column: 1; }

  .hour__text, .estate__info { grid-template-columns: 1fr; grid-template-areas: none; row-gap: .75rem; }
  .estate__no, .estate__name, .estate__detail { grid-area: auto; }
  .estate__name { margin-bottom: .25rem; }
  .estate__detail { font-size: .8125rem; line-height: 1.8; }
  .hour__note p { font-size: .8125rem; line-height: 1.8; }

  .section-view__stage { grid-template-columns: 1fr; align-content: center; gap: 1.25rem; padding-block: 3rem; }
  .section-view__figure { margin-inline: calc(var(--gutter) * -.4); }
  .drawing .draw { stroke-width: 2; }
  .drawing .thick { stroke-width: 3.4; }
  .drawing__ray { stroke-width: 2.4; }
  .drawing__note { margin-top: .5rem; }
  .drawing__depth { display: none; }
  .section-view__body { gap: .625rem; font-size: .8125rem; line-height: 1.85; }

  .estates__words { grid-template-columns: 1fr; padding-top: 4.5rem; row-gap: 0; line-height: 1.35; }
  .estates__word--b, .estates__word--c { text-align: left; }
  .estates__word--b { padding-left: 2em; }
  .estates__word--c { padding-left: 4em; }

  .visit { grid-template-columns: 1fr; row-gap: 3rem; }
  .visit__photo { position: relative; top: auto; width: 62%; }
  .coda__grid { grid-template-columns: 1fr; }
  .coda__company { grid-template-columns: 1fr; }
}

/* 動きの演出。動きを減らす設定では、ここが丸ごと効かない ------------------ */
@media (prefers-reduced-motion: no-preference) {
  /* 行ごとに下から現れる */
  [data-in="rise"] .ph > span { transition: transform 1.2s var(--ease); }
  [data-in="rise"] .ph:nth-child(2) > span { transition-delay: .12s; }
  [data-in="rise"].is-wait { opacity: 1; transform: none; }
  [data-in="rise"].is-wait .ph > span { transform: translateY(112%); }

  /* 写真は切り抜きが開きながら少し引く */
  [data-in="wipe"] img { transition: transform 1.8s var(--ease); }
  [data-in="wipe"].is-wait img { transform: scale(1.18); }

  .step { --wait: 0s; }

  /* 読み込みの演出 ------------------------------------------- */
  .js .intro {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: block;
    overflow: hidden;
    pointer-events: none;
    animation: intro-leave .55s 1.5s ease-out forwards;
  }
  .js .hero { background: var(--ink); }
  .js .hero__frame { animation: hero-open 1.15s 1.25s var(--ease-inout) both; }
  .js .hero__frame::after { animation: fade-in 1s 1.6s ease-out both; }
  .js .hero__photo img { animation: hero-settle 3.4s .1s cubic-bezier(.16, .6, .2, 1) both; }
  .js .hero__title .ph > span { animation: line-rise 1.25s 1.95s var(--ease) both; }
  .js .hero__title .ph:nth-child(2) > span { animation-delay: 2.08s; }
  .js .hero__lead, .js .hero__next, .js .site { animation: fade-in 1s 2.3s ease-out both; }

  .intro__column { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--line-on-ink); transform-origin: top; animation: grow-down 1s var(--ease) both; }
  .intro__column:nth-child(1) { left: 12.5%; }
  .intro__column:nth-child(2) { left: 37.5%; animation-delay: .06s; }
  .intro__column:nth-child(3) { left: 62.5%; animation-delay: .12s; }
  .intro__horizon {
    position: absolute;
    inset: 0 0 auto;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 0 var(--gutter) .5rem calc(12.5% + .5rem);
    color: var(--on-ink);
    font-size: .75rem;
    letter-spacing: .08em;
    border-bottom: 1px solid var(--line-on-ink);
    animation: horizon-sink 1.7s cubic-bezier(.3, .1, .3, 1) both;
  }
  .intro__clock { font: 400 1.5rem/1 var(--didot); font-variant-numeric: lining-nums; letter-spacing: .02em; }
  .intro__word {
    position: absolute;
    color: var(--on-ink);
    font: 400 clamp(1.75rem, 1rem + 2.6vw, 3.5rem)/1.2 var(--mincho);
    font-feature-settings: "palt";
    animation: word-in .8s var(--ease) both;
  }
  .intro__word--1 { left: calc(12.5% + .5rem); top: 30%; animation-delay: .1s; }
  .intro__word--2 { left: calc(37.5% + .5rem); top: 48%; animation-delay: .22s; }
  .intro__word--3 { left: calc(62.5% + .5rem); top: 14%; animation-delay: .34s; }

  /* 四つの時刻を重ねる。JavaScript が動く時だけ ----------------- */
  .js .hours { position: relative; height: 460vh; }
  .js .hours__stage { position: sticky; top: var(--bar); height: var(--screen); overflow: hidden; background: var(--ink); }
  .js .hours__list { position: absolute; inset: 0; }
  .js .hour {
    --in: clamp(0, calc((var(--p, 0) - var(--from)) / .07), 1);
    --out: clamp(0, calc((var(--to) - var(--p, 0)) / .05), 1);
    --local: clamp(0, calc((var(--p, 0) - var(--from)) / .34), 1);
    position: absolute;
    inset: 0;
    height: auto;
    min-height: 0;
    background: none;
  }
  .js .hour:first-child { --in: 1; }
  .js .hour:last-child { --out: 1; }
  .js .hour__photo { opacity: var(--in); }
  .js .hour__photo img { transform: scale(calc(1.07 - .07 * var(--local))); transform-origin: 62% 62%; will-change: transform; }
  /* 文字は写真より少し遅れて出て、次の写真が来る前に消える。前後の文字が重ならない */
  .js .hour {
    --text-in: clamp(0, calc((var(--p, 0) - var(--from) - .045) / .045), 1);
    --text-out: clamp(0, calc((var(--to) - .06 - var(--p, 0)) / .035), 1);
  }
  .js .hour:first-child { --text-in: 1; }
  .js .hour:last-child { --text-out: 1; }
  .js .hour__text { opacity: min(var(--text-in), var(--text-out)); }
  .js .hour__time { transform: translateY(calc((1 - var(--text-in)) * 2.5rem + (1 - var(--text-out)) * -1.5rem)); }
  .js .hour__note { transform: translateY(calc((1 - var(--text-in)) * 1.5rem)); }

  .js .hours__arc { position: absolute; top: clamp(1rem, 3vh, 2rem); right: var(--gutter); display: block; width: clamp(5.5rem, 10vw, 10rem); height: auto; overflow: visible; fill: none; stroke: rgba(243, 238, 230, .6); stroke-width: 1; }
  .js .hours__sun {
    --arc-width: clamp(5.5rem, 10vw, 10rem);
    position: absolute;
    top: clamp(1rem, 3vh, 2rem);
    right: var(--gutter);
    display: block;
    width: var(--arc-width);
    aspect-ratio: 160 / 84;
    pointer-events: none;
  }
  /* 半円の上を、左の高い所から右の地平線へ動く */
  .js .hours__sun::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 95.2%;
    width: .5rem;
    height: .5rem;
    margin: -.25rem;
    border-radius: 50%;
    background: var(--amber);
    transform: rotate(calc(-58deg + 148deg * var(--p, 1))) translateY(calc(var(--arc-width) * -.475));
  }

  /* 断面図。線が引かれ、太陽が傾く ------------------------------ */
  .js .section-view { height: 300vh; }
  .js .section-view__stage { position: sticky; top: var(--bar); height: var(--screen); min-height: 0; padding-block: 1.5rem; }
  .js .drawing .draw { stroke-dasharray: 1; stroke-dashoffset: calc(1 - clamp(0, calc(var(--p, 1) / .14), 1)); }
  .js .drawing .cut { opacity: clamp(0, calc((var(--p, 1) - .04) / .1), 1); }
  .js .drawing__light, .js .drawing__ray, .js .drawing__sun { opacity: clamp(0, calc((var(--p, 1) - .1) / .06), 1); }
  .section-view__shadow img { animation: shadow-sway 16s ease-in-out infinite alternate; }

  /* 物件。写真が前の写真に重なって上がってくる ------------------- */
  .estates { position: relative; }
  /* 1件ごとに、上がってくる → 止まって読める → 次が重なる、の順。高さ3画面ぶん */
  .estate { height: calc(var(--screen) * 3); }
  .estate + .estate { margin-top: calc(var(--screen) * -1); }
  .estate:last-child { height: calc(var(--screen) * 1.8); }
  .estate__stage { position: sticky; top: var(--bar); min-height: 0; }
  .estate__photo img { transform: translateY(calc((.35 - var(--p, .35)) * 9%)) scale(1.04); will-change: transform; }
  /* 次の写真が上がってくる間に、今の写真が暗く沈む */
  .estate__stage::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 3;
    background: var(--ink);
    opacity: calc(clamp(0, calc((var(--p, .3) - .5) / .25), 1) * .7);
    pointer-events: none;
  }
  .estate:last-child .estate__stage::before { display: none; }
  .estate__info { --show: clamp(0, calc((var(--p, 1) - .14) / .1), 1); opacity: var(--show); transform: translateY(calc((1 - var(--show)) * 2rem)); }
  .estate--first .estate__info { --show: clamp(0, calc((var(--p, 1) - .35) / .07), 1); }
  /* 離れて置いた三語は、スクロールで外へ開いて消える */
  .estates__words { --away: clamp(0, calc((var(--p, 1) - .27) / .08), 1); opacity: calc(1 - var(--away)); }
  .estates__word { display: block; }
  .estates__word--a { transform: translateX(calc(var(--away) * -4vw)); }
  .estates__word--c { transform: translateX(calc(var(--away) * 4vw)); }

  .section-view__title .ph, .coda__strip img { will-change: transform; }
  .coda__strip img { transform: translateY(calc((var(--p, 1) - 1) * 14%)); }
}

/* JS が動かない、または動きを減らす時の断面図と時刻 */
@media (prefers-reduced-motion: reduce) {
  .site__nav a, .more svg, .step::before, .coda__nav a { transition: none; }
}

@keyframes hero-open {
  from { clip-path: inset(24% 12% 24% 62.5%); }
  to { clip-path: inset(0 0 0 0); }
}
@keyframes hero-settle {
  from { transform: scale(1.22); filter: brightness(1.5) saturate(.72); }
  45% { filter: brightness(1.12) saturate(.92); }
  to { transform: scale(1); filter: none; }
}
@keyframes horizon-sink {
  from { transform: translateY(18vh); }
  to { transform: translateY(78vh); }
}
@keyframes intro-leave {
  to { opacity: 0; visibility: hidden; }
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes line-rise {
  from { transform: translateY(112%); }
  to { transform: none; }
}
@keyframes word-in {
  from { opacity: 0; transform: translateY(.6em); }
  to { opacity: 1; transform: none; }
}
@keyframes grow-down {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}
@keyframes shadow-sway {
  from { transform: translate3d(-1.2%, -1%, 0) rotate(-.6deg) scale(1.06); }
  to { transform: translate3d(1.2%, 1%, 0) rotate(.6deg) scale(1.06); }
}