:root {
  --moon-ash: #D8DDE2;
  --sumi: #171A1D;
  --stone-mist: #AAB3BC;
  --blue-shadow: #56616D;
  --candle: #E7A94B;
  --lacquer: #050607;
  --rice: #F4F1EA;
  --display: "Limelight", "Times New Roman", serif;
  --body: "Zen Kaku Gothic New", Inter, system-ui, sans-serif;
  --serif: "Noto Serif JP", Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--sumi);
  background:
    radial-gradient(circle at 86% 10%, rgba(231, 169, 75, 0.12), transparent 9rem),
    linear-gradient(90deg, rgba(170, 179, 188, 0.34), transparent 34%),
    var(--moon-ash);
  font-family: var(--body);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 30;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(23, 26, 29, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 241, 234, 0.16) 1px, transparent 1px);
  background-size: 46px 46px, 13px 13px;
  mix-blend-mode: multiply;
}

.cursor-ember {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--candle);
  box-shadow: 0 0 18px rgba(231, 169, 75, 0.85), 0 0 42px rgba(231, 169, 75, 0.22);
  pointer-events: none;
  z-index: 40;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 800ms ease;
}

body.awake .cursor-ember { opacity: 0.65; }

.route-rail {
  position: fixed;
  left: 0;
  top: 0;
  width: min(23vw, 280px);
  height: 100vh;
  z-index: 20;
  padding: 6vh 2.1vw 5vh 3vw;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: 2.8rem;
  background: linear-gradient(90deg, rgba(244, 241, 234, 0.46), rgba(244, 241, 234, 0.08) 72%, transparent);
  border-right: 1px solid rgba(86, 97, 109, 0.22);
}

.rail-wordmark {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.1vw, 2.4rem);
  letter-spacing: 0.12em;
  line-height: 1.05;
}

.rail-rule {
  width: 1px;
  min-height: 12vh;
  background: linear-gradient(var(--sumi), transparent);
  opacity: 0.35;
  margin-left: 0.4rem;
}

.chamber-index {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.3rem;
  align-self: stretch;
}

.route-mark {
  display: grid;
  grid-template-columns: 3.3rem 1fr;
  align-items: center;
  color: var(--blue-shadow);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.55;
  transition: opacity 500ms ease, color 500ms ease, transform 500ms ease;
}

.route-mark::before {
  content: attr(data-scene);
  font-family: var(--display);
  color: var(--sumi);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.route-mark::after {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  grid-column: 1 / 2;
  margin-left: 1.7rem;
  transform: translateY(-0.35rem);
}

.route-mark.active {
  opacity: 1;
  color: var(--candle);
  transform: translateX(0.28rem);
}

.rail-caption {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  letter-spacing: 0.42em;
  color: var(--blue-shadow);
  font-size: 0.78rem;
  justify-self: end;
}

.scroll-map { margin-left: min(23vw, 280px); }

.chamber {
  min-height: 100vh;
  position: relative;
  display: grid;
  grid-template-columns: minmax(4rem, 9vw) minmax(8rem, 19vw) minmax(28rem, 1fr);
  align-items: center;
  padding: 7vh 6vw 7vh 4vw;
  border-bottom: 1px solid rgba(86, 97, 109, 0.18);
  overflow: hidden;
}

.chamber::before {
  content: "";
  position: absolute;
  inset: 9vh 7vw 9vh auto;
  width: 32vw;
  border: 1px solid rgba(244, 241, 234, 0.72);
  background: repeating-linear-gradient(90deg, rgba(244, 241, 234, 0.24) 0 1px, transparent 1px 54px);
  opacity: 0.48;
}

.chamber-number {
  position: relative;
  z-index: 2;
  font-family: var(--display);
  font-size: clamp(4.8rem, 10vw, 12rem);
  letter-spacing: 0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(86, 97, 109, 0.45);
  align-self: start;
  margin-top: 8vh;
}

.vertical-phrase {
  position: relative;
  z-index: 3;
  writing-mode: vertical-rl;
  justify-self: center;
  font-family: var(--serif);
  letter-spacing: 0.55em;
  color: var(--blue-shadow);
  font-size: clamp(0.82rem, 1vw, 1.05rem);
  line-height: 2;
}

.section-kicker {
  margin: 0 0 1.1rem;
  color: var(--blue-shadow);
  font-size: 0.72rem;
  letter-spacing: 0.36em;
  text-transform: uppercase;
}

.hero-title-block, .chapter-copy, .motif-stage { position: relative; z-index: 4; }

.hero-title-block { grid-column: 2 / 4; align-self: center; max-width: 720px; }

h1, h2 { margin: 0; font-family: var(--display); font-weight: 400; }

h1 {
  font-size: clamp(4rem, 11vw, 11rem);
  letter-spacing: 0.09em;
  line-height: 0.88;
  text-shadow: 0 1px 0 var(--rice);
}

h2 {
  max-width: 760px;
  font-size: clamp(2.1rem, 5.5vw, 6.4rem);
  letter-spacing: 0.06em;
  line-height: 1.02;
}

.meditation, .chapter-copy p:not(.section-kicker) {
  max-width: 31rem;
  color: var(--blue-shadow);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.4vw, 1.4rem);
  line-height: 1.9;
  letter-spacing: 0.06em;
}

.quest-line {
  position: absolute;
  inset: 10vh 5vw 8vh 18vw;
  width: auto;
  height: auto;
  z-index: 1;
}

.quest-line path {
  fill: none;
  stroke: var(--blue-shadow);
  stroke-width: 1.1;
  stroke-dasharray: 1050;
  stroke-dashoffset: 1050;
  opacity: 0.62;
}

body.awake .quest-line path { animation: drawPath 3.8s ease forwards; }

.line-moon { fill: var(--rice); stroke: var(--blue-shadow); stroke-width: 1; }
.line-ember { fill: var(--candle); filter: drop-shadow(0 0 13px rgba(231, 169, 75, 0.75)); }

.candle-dot {
  position: absolute;
  right: 10vw;
  top: 18vh;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(231, 169, 75, 0.22);
  display: grid;
  place-items: center;
  z-index: 5;
}

.candle-dot span, .floating-wick span {
  width: 7px;
  height: 14px;
  display: block;
  border-radius: 50% 50% 45% 45%;
  background: var(--candle);
  box-shadow: 0 0 18px rgba(231, 169, 75, 0.9), 0 0 40px rgba(231, 169, 75, 0.32);
  animation: flicker 2.2s infinite ease-in-out;
  transform-origin: 50% 100%;
}

.shoji-panel {
  position: absolute;
  right: 14vw;
  bottom: 13vh;
  width: 22vw;
  height: 28vh;
  background: linear-gradient(rgba(244, 241, 234, 0.42), rgba(244, 241, 234, 0.08));
  border: 1px solid rgba(244, 241, 234, 0.8);
  opacity: 0.7;
}

.wide-copy { grid-column: 2 / 4; align-self: start; padding-top: 5vh; }
.narrow-copy, .final-copy { grid-column: 2 / 3; }
.motif-stage { grid-column: 3 / 4; width: 100%; min-height: 42vh; }
.ash-stage { margin-top: 22vh; }

svg path, svg ellipse, svg circle { vector-effect: non-scaling-stroke; }

.ash-svg, .pool-svg, .map-svg, .bell-svg { width: 100%; height: auto; overflow: visible; }
.ash-trail, .map-route, .smoke-verse { fill: none; stroke: var(--blue-shadow); stroke-width: 1; opacity: 0.55; }
.draw-on-view { stroke-dasharray: 900; stroke-dashoffset: 900; }
.chamber.in-view .draw-on-view { animation: drawPath 3.2s ease forwards; }
.amber-reflection { fill: none; stroke: var(--candle); stroke-width: 5; stroke-linecap: round; opacity: 0.55; filter: blur(0.3px); animation: reflection 4s ease-in-out infinite; }

.deco-fan path { stroke: var(--blue-shadow); stroke-width: 1; opacity: 0.42; transform-origin: 575px 92px; animation: fanBreathe 6s ease-in-out infinite; }

.paper-talisman, .hanging-charms span {
  width: 54px;
  height: 98px;
  display: grid;
  place-items: center;
  background: rgba(244, 241, 234, 0.72);
  border: 1px solid rgba(86, 97, 109, 0.22);
  color: var(--blue-shadow);
  font-family: var(--serif);
  box-shadow: 0 24px 60px rgba(86, 97, 109, 0.13);
}

.paper-talisman { position: absolute; right: 11%; top: 4%; transform-origin: top center; animation: talismanTurn 9s ease-in-out infinite; }
.pool { background: linear-gradient(180deg, var(--moon-ash), rgba(170, 179, 188, 0.55)); }
.pool-stage { min-height: 54vh; display: grid; place-items: center; }

.floating-wick {
  position: absolute;
  left: 50%;
  top: 38%;
  transform: translate(-50%, -50%);
  z-index: 5;
}

.sound-ring {
  fill: none;
  stroke: var(--rice);
  stroke-width: 1;
  opacity: 0;
  transform-origin: 310px 220px;
  animation: ring 6s ease-out infinite;
}
.ring-b { animation-delay: 1.8s; }
.ring-c { animation-delay: 3.6s; }
.smoke-verse { stroke-dasharray: 240; stroke-dashoffset: 240; animation: smokeWrite 7s ease-in-out infinite; }
.smoke-verse.delay { animation-delay: 1.4s; }

.map { background: linear-gradient(90deg, rgba(5, 6, 7, 0.08), transparent 34%), var(--moon-ash); }
.map-route { stroke: rgba(86, 97, 109, 0.58); }
.map-point circle { fill: var(--rice); stroke: var(--blue-shadow); stroke-width: 1; }
.map-point.amber circle { fill: var(--candle); filter: drop-shadow(0 0 14px rgba(231, 169, 75, 0.7)); }
.map-point text { font-family: var(--body); font-size: 12px; letter-spacing: 0.28em; fill: var(--blue-shadow); text-transform: uppercase; }
.hanging-charms { position: absolute; top: -3vh; right: 8vw; display: flex; gap: 2.3rem; }
.hanging-charms span { position: relative; transform-origin: top center; animation: talismanTurn 10s ease-in-out infinite; }
.hanging-charms span::before { content: ""; position: absolute; top: -55px; width: 1px; height: 55px; background: rgba(86, 97, 109, 0.34); }
.hanging-charms span:nth-child(2) { animation-delay: 1.3s; }
.hanging-charms span:nth-child(3) { animation-delay: 2.6s; }

.bell { background: linear-gradient(90deg, var(--lacquer) 0, #11161a 30%, var(--moon-ash) 30%, var(--moon-ash) 100%); color: var(--rice); }
.bell .chamber-number { -webkit-text-stroke-color: rgba(244, 241, 234, 0.42); }
.bell .vertical-phrase, .bell .section-kicker, .bell p { color: var(--stone-mist); }
.final-inscription {
  display: inline-block;
  margin-top: 2rem;
  font-family: var(--serif);
  color: var(--candle);
  letter-spacing: 0.22em;
  border-bottom: 1px solid rgba(231, 169, 75, 0.55);
  padding-bottom: 0.45rem;
}
.bell-stage { display: grid; place-items: center; }
.bell-body, .bell-lip, .bell-rope, .bell-tremble { fill: none; stroke: var(--blue-shadow); stroke-width: 2; }
.bell-body { stroke: var(--rice); fill: rgba(244, 241, 234, 0.06); }
.bell-glow { fill: var(--candle); filter: drop-shadow(0 0 21px rgba(231, 169, 75, 0.86)); animation: bellGlow 3s ease-in-out infinite; }
.bell-tremble { opacity: 0; stroke: var(--candle); animation: bellLine 5s ease-in-out infinite; }
.bell-tremble.right { animation-delay: 0.2s; }
.chamber.in-view .bell-svg { animation: bellTremble 5s ease-in-out infinite; transform-origin: center 42%; }

@keyframes drawPath { to { stroke-dashoffset: 0; } }
@keyframes flicker { 0%, 100% { transform: scaleY(1) rotate(-2deg); opacity: 0.9; } 45% { transform: scaleY(1.25) rotate(4deg); opacity: 1; } 70% { transform: scaleY(0.82) rotate(-5deg); opacity: 0.72; } }
@keyframes reflection { 0%, 100% { opacity: 0.25; stroke-width: 3; } 50% { opacity: 0.66; stroke-width: 7; } }
@keyframes fanBreathe { 0%, 100% { transform: rotate(0deg); opacity: 0.28; } 50% { transform: rotate(4deg); opacity: 0.58; } }
@keyframes talismanTurn { 0%, 100% { transform: rotate(-2deg); } 45% { transform: rotate(12deg); } 70% { transform: rotate(0deg); } }
@keyframes ring { 0% { opacity: 0; transform: scale(0.62); } 18% { opacity: 0.75; } 100% { opacity: 0; transform: scale(1.42); } }
@keyframes smokeWrite { 0% { stroke-dashoffset: 240; opacity: 0; } 30%, 60% { stroke-dashoffset: 0; opacity: 0.5; } 100% { stroke-dashoffset: -240; opacity: 0; } }
@keyframes bellGlow { 0%, 100% { transform: scale(0.82); opacity: 0.75; } 50% { transform: scale(1.08); opacity: 1; } }
@keyframes bellLine { 0%, 50%, 100% { opacity: 0; } 58% { opacity: 0.8; } 72% { opacity: 0.15; } }
@keyframes bellTremble { 0%, 54%, 100% { transform: rotate(0deg); } 58% { transform: rotate(-1.6deg); } 62% { transform: rotate(1.2deg); } 66% { transform: rotate(-0.6deg); } }

@media (max-width: 900px) {
  .route-rail { width: 100%; height: 86px; grid-template-columns: auto 1fr auto; grid-template-rows: 1fr; padding: 1rem 1.25rem; gap: 1rem; }
  .rail-rule, .rail-caption { display: none; }
  .chamber-index { flex-direction: row; align-items: center; justify-content: flex-end; gap: 0.6rem; overflow: hidden; }
  .route-mark { display: block; font-size: 0; }
  .route-mark::before { font-size: 0.9rem; }
  .route-mark::after, .route-mark span { display: none; }
  .scroll-map { margin-left: 0; padding-top: 86px; }
  .chamber { grid-template-columns: 4.5rem 1fr; padding: 5vh 1.3rem; }
  .vertical-phrase { grid-column: 1; }
  .hero-title-block, .chapter-copy, .motif-stage { grid-column: 2; }
  .chamber-number { position: absolute; right: 1rem; top: 5rem; opacity: 0.48; }
  .bell { background: linear-gradient(180deg, var(--lacquer) 0 24%, var(--moon-ash) 24%); color: var(--sumi); }
  .bell h2 { color: var(--sumi); }
}