:root {
  /* Design font tokens for compliance: JP** annotations Grotesk** only tiny frequency labels */
  --rice: #F8F2E6;
  --mist: #FFFDF7;
  --indigo: #17213A;
  --bronze: #B88A3D;
  --blue: #7DB8D8;
  --ume: #E7A7B2;
  --charcoal: #2B2A27;
  --serif-jp: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", Georgia, serif;
  --display: "Fraunces", Georgia, serif;
  --sans-jp: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --space: "Space Grotesk", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--rice);
}

body {
  margin: 0;
  color: var(--charcoal);
  background:
    radial-gradient(circle at 18% 8%, rgba(231,167,178,.22), transparent 28vw),
    radial-gradient(circle at 78% 28%, rgba(125,184,216,.18), transparent 32vw),
    linear-gradient(100deg, var(--rice), var(--mist) 45%, var(--rice));
  font-family: var(--sans-jp);
  overflow-x: hidden;
}

body.tone-2, body.tone-3 {
  background:
    radial-gradient(circle at 70% 28%, rgba(184,138,61,.18), transparent 30vw),
    linear-gradient(100deg, #F8F2E6 0%, #FFFDF7 42%, rgba(23,33,58,.14) 100%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: .42;
  mix-blend-mode: multiply;
  background-image:
    repeating-linear-gradient(90deg, rgba(43,42,39,.025) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(0deg, rgba(255,253,247,.35) 0 2px, transparent 2px 7px);
}

.cursor-ring {
  position: fixed;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(184,138,61,.34);
  border-radius: 50%;
  pointer-events: none;
  z-index: 60;
  transform: translate3d(-100px,-100px,0);
  opacity: .8;
}

.masthead {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(120px, 1fr) auto;
  gap: 3vw;
  padding: 22px clamp(22px, 4vw, 66px);
  color: var(--indigo);
  transition: color 700ms ease, opacity 700ms ease;
}

.masthead__rule {
  position: absolute;
  left: clamp(22px, 4vw, 66px);
  right: clamp(22px, 4vw, 66px);
  top: 16px;
  border-top: 1px solid rgba(23,33,58,.2);
}

.masthead__kicker {
  font-family: var(--serif-jp);
  font-size: clamp(14px, 1.15vw, 18px);
  letter-spacing: .04em;
}

.tone-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: flex-end;
}

.tone-nav a {
  color: currentColor;
  text-decoration: none;
  font: 10px/1.2 var(--space);
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .48;
  transition: opacity 400ms ease, letter-spacing 400ms ease;
}

.tone-nav a.is-active { opacity: 1; letter-spacing: .22em; }

.panel {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.opening {
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, rgba(255,253,247,.86), rgba(248,242,230,.88) 56%, rgba(248,242,230,1)),
    var(--rice);
}

.opening__field {
  position: relative;
  width: min(86vw, 1100px);
  height: min(72vh, 720px);
  display: grid;
  place-items: center;
}

.soft-ring {
  position: absolute;
  width: min(55vw, 620px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(23,33,58,.08);
  box-shadow: inset 0 0 42px rgba(23,33,58,.035), 0 0 0 22px rgba(255,253,247,.18);
  animation: openingRing 3600ms cubic-bezier(.2,.7,.1,1) both;
}

.soft-ring--two {
  width: min(38vw, 430px);
  animation-delay: 760ms;
  border-color: rgba(184,138,61,.14);
}

.wordmark {
  margin: 0;
  font-family: var(--serif-jp);
  font-weight: 400;
  font-size: clamp(54px, 12vw, 168px);
  letter-spacing: -.08em;
  color: var(--indigo);
  text-shadow: 0 1px 0 rgba(255,253,247,.7);
  animation: wordAppear 2600ms 900ms ease both;
}

.wordmark span {
  display: inline-block;
  animation: glyphTremble 3300ms ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 80ms);
}

.opening__mark, .opening__caption {
  position: absolute;
  font-family: var(--space);
  letter-spacing: .18em;
  text-transform: uppercase;
  font-size: 10px;
  color: rgba(43,42,39,.55);
}

.opening__mark { top: 11%; left: 6%; }
.opening__caption { bottom: 12%; right: 4%; max-width: 250px; line-height: 1.8; text-align: right; }

.registration-dot {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bronze);
  box-shadow: 0 0 0 7px rgba(184,138,61,.08);
}
.dot-a { left: 22%; bottom: 25%; }
.dot-b { right: 18%; top: 18%; }

.staff {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--staff-top, 47vh);
  height: 160px;
  z-index: 20;
  pointer-events: none;
  transform: translateY(-50%);
  opacity: var(--staff-opacity, .86);
  transition: top 800ms cubic-bezier(.22,.7,.12,1), opacity 700ms ease;
}

.staff svg { width: 100%; height: 100%; display: block; }
.staff path {
  fill: none;
  stroke: var(--indigo);
  stroke-width: 1.05;
  stroke-dasharray: 1300;
  stroke-dashoffset: var(--dash, 1300);
  opacity: .55;
}
.staff .staff-echo { stroke: var(--blue); opacity: .28; stroke-width: .8; }
.staff__label {
  position: absolute;
  right: 5vw;
  top: 44%;
  font: 10px/1 var(--space);
  letter-spacing: .18em;
  color: var(--bronze);
}

.chapter {
  display: grid;
  grid-template-columns: 12vw 1fr 1fr 12vw;
  grid-template-rows: 18vh 1fr 18vh;
  isolation: isolate;
}

.chapter--dawn { background: linear-gradient(115deg, var(--rice), var(--mist)); }
.chapter--noon { background: linear-gradient(105deg, #FFFDF7 0%, #F8F2E6 58%, rgba(125,184,216,.2)); }
.chapter--blue { background: linear-gradient(110deg, var(--indigo), #223054 48%, #F8F2E6 49%, #FFFDF7); color: var(--mist); }
.chapter--after { background: radial-gradient(circle at 72% 45%, rgba(23,33,58,.16), transparent 32vw), linear-gradient(100deg, #FFFDF7, #F8F2E6); }

.washi {
  position: absolute;
  background: rgba(255,253,247,.62);
  border: 1px solid rgba(23,33,58,.06);
  box-shadow: 0 24px 80px rgba(43,42,39,.08);
  backdrop-filter: blur(2px);
  z-index: -1;
  transform: translate3d(var(--paper-x,0), var(--paper-y,0), 0) rotate(var(--paper-r, -2deg));
  transition: transform 900ms cubic-bezier(.22,.7,.12,1);
}
.washi--dawn { width: 42vw; height: 72vh; top: 15vh; right: 10vw; }
.washi--noon { width: 62vw; height: 48vh; top: 28vh; left: 8vw; --paper-r: 1.5deg; }
.washi--blue { width: 36vw; height: 76vh; top: 13vh; right: 8vw; background: rgba(255,253,247,.72); }
.washi--after { width: 72vw; height: 38vh; left: 16vw; top: 34vh; --paper-r: -.8deg; }

.chapter__number {
  grid-column: 1 / 2;
  grid-row: 2;
  align-self: start;
  justify-self: center;
  writing-mode: vertical-rl;
  font: 11px/1 var(--space);
  letter-spacing: .22em;
  color: var(--bronze);
}

.vertical-slip {
  position: absolute;
  right: clamp(24px, 4vw, 66px);
  top: 18vh;
  font-family: var(--serif-jp);
  font-size: clamp(28px, 4vw, 70px);
  letter-spacing: .2em;
  writing-mode: vertical-rl;
  opacity: .24;
  color: currentColor;
}

.chapter__copy {
  position: relative;
  z-index: 4;
  max-width: 620px;
}
.chapter__copy--high { grid-column: 2 / 4; grid-row: 1 / 3; align-self: end; }
.chapter__copy--low { grid-column: 3 / 4; grid-row: 2 / 4; align-self: center; justify-self: end; }
.chapter__copy--mid { grid-column: 2 / 4; grid-row: 2; align-self: center; justify-self: center; }

.eyebrow {
  margin: 0 0 18px;
  font: 11px/1 var(--space);
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--bronze);
}

h2 {
  margin: 0;
  font-family: var(--serif-jp);
  font-weight: 400;
  line-height: .94;
  font-size: clamp(48px, 8.8vw, 136px);
  letter-spacing: -.055em;
}

.marginalia {
  position: absolute;
  max-width: 230px;
  font: 13px/1.8 var(--sans-jp);
  color: rgba(43,42,39,.58);
}
.chapter--blue .marginalia { color: rgba(255,253,247,.66); }
.marginalia--left { left: 6vw; bottom: 10vh; }
.marginalia--right { right: 7vw; bottom: 11vh; text-align: right; }

.fragment {
  position: absolute;
  margin: 0;
  font-family: var(--display);
  font-variation-settings: "wght" 300, "SOFT" 80;
  letter-spacing: -.06em;
  line-height: .8;
  opacity: .11;
  pointer-events: none;
}
.fragment--dawn { right: -5vw; bottom: 2vh; font-size: 13vw; color: var(--indigo); }
.fragment--noon { left: -3vw; top: 12vh; font-size: 11vw; color: var(--blue); }
.fragment--blue { right: -2vw; bottom: 2vh; font-size: 18vw; color: var(--mist); opacity: .13; }
.fragment--after { left: 6vw; bottom: 4vh; font-size: 10vw; color: var(--charcoal); }

.resonance {
  position: absolute;
  width: clamp(280px, 45vw, 690px);
  aspect-ratio: 1;
  border-radius: 50%;
  z-index: 2;
  transform: translate3d(var(--ring-x,0), var(--ring-y,0), 0) scale(var(--ring-scale,1));
  transition: transform 900ms cubic-bezier(.22,.7,.12,1), opacity 700ms ease;
}
.resonance span {
  position: absolute;
  inset: calc(var(--n) * 7%);
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: calc(.42 - var(--n) * .06);
  animation: ringBreathe 5200ms ease-in-out infinite;
  animation-delay: calc(var(--n) * -700ms);
}
.resonance span:nth-child(1) { --n: 0; }
.resonance span:nth-child(2) { --n: 1; }
.resonance span:nth-child(3) { --n: 2; }
.resonance span:nth-child(4) { --n: 3; }

.resonance--dawn { right: 14vw; top: 18vh; color: rgba(23,33,58,.18); box-shadow: inset 0 0 46px rgba(23,33,58,.03); }
.resonance--noon { left: 12vw; top: 22vh; color: rgba(125,184,216,.58); background: radial-gradient(circle, rgba(125,184,216,.11), transparent 62%); }
.resonance--blue { right: 12vw; top: 19vh; color: rgba(184,138,61,.72); background: radial-gradient(circle, rgba(23,33,58,.94) 0 42%, transparent 43%); }
.resonance--after { left: 26vw; top: 20vh; color: rgba(184,138,61,.48); }
.resonance--after span { border-style: dashed; }

.crop {
  position: absolute;
  width: 30px;
  height: 30px;
  border-color: rgba(43,42,39,.28);
  opacity: .6;
}
.chapter--blue .crop { border-color: rgba(255,253,247,.32); }
.crop--tl { left: 4vw; top: 12vh; border-left: 1px solid; border-top: 1px solid; }
.crop--tr { right: 4vw; top: 12vh; border-right: 1px solid; border-top: 1px solid; }
.crop--bl { left: 4vw; bottom: 10vh; border-left: 1px solid; border-bottom: 1px solid; }
.crop--br { right: 4vw; bottom: 10vh; border-right: 1px solid; border-bottom: 1px solid; }

.chime {
  position: absolute;
  left: 17vw;
  top: 22vh;
  display: flex;
  gap: 18px;
}
.chime i {
  display: block;
  width: 1px;
  height: 120px;
  background: rgba(23,33,58,.18);
  transform-origin: top;
  animation: chime 4200ms ease-in-out infinite;
}
.chime i::after {
  content: "";
  display: block;
  width: 18px;
  height: 28px;
  margin: 115px 0 0 -9px;
  border: 1px solid rgba(184,138,61,.46);
  border-radius: 50% 50% 45% 45%;
}

.koto-lines {
  position: absolute;
  inset: 18vh 3vw auto 0;
  height: 44vh;
  transform: rotate(-8deg);
  opacity: .38;
}
.koto-lines i {
  display: block;
  height: 1px;
  margin: 42px 0;
  background: linear-gradient(90deg, transparent, rgba(23,33,58,.28), transparent);
}

.bell-ellipse {
  position: absolute;
  left: 10vw;
  bottom: 16vh;
  width: 26vw;
  height: 9vw;
  border: 1px solid rgba(184,138,61,.48);
  border-radius: 50%;
  transform: rotate(-10deg);
  box-shadow: 0 0 80px rgba(184,138,61,.16);
}

.micro-rings {
  position: absolute;
  right: 13vw;
  top: 22vh;
  width: 220px;
  height: 320px;
}
.micro-rings i {
  position: absolute;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(184,138,61,.35);
}
.micro-rings i:nth-child(1) { left: 0; top: 20px; }
.micro-rings i:nth-child(2) { left: 90px; top: 0; width: 18px; height: 18px; }
.micro-rings i:nth-child(3) { left: 150px; top: 84px; }
.micro-rings i:nth-child(4) { left: 44px; top: 150px; width: 70px; height: 70px; }
.micro-rings i:nth-child(5) { right: 0; bottom: 20px; width: 26px; height: 26px; }
.micro-rings i:nth-child(6) { left: 12px; bottom: 0; }

@keyframes openingRing {
  from { transform: scale(.2); opacity: 0; filter: blur(7px); }
  45% { opacity: 1; }
  to { transform: scale(1); opacity: .72; filter: blur(0); }
}

@keyframes wordAppear {
  from { opacity: 0; letter-spacing: -.18em; filter: blur(10px); transform: translateY(10px); }
  to { opacity: 1; letter-spacing: .018em; filter: blur(0); transform: translateY(0); }
}

@keyframes glyphTremble {
  0%, 100% { transform: translateX(0); }
  45% { transform: translateX(.04em); }
  55% { transform: translateX(-.025em); }
}

@keyframes ringBreathe {
  0%, 100% { transform: scale(.985); filter: blur(.2px); }
  50% { transform: scale(1.035); filter: blur(1px); }
}

@keyframes chime {
  0%, 100% { transform: rotate(-1deg); }
  50% { transform: rotate(1.4deg); }
}

@media (max-width: 760px) {
  .masthead { grid-template-columns: 1fr; padding: 18px 20px; }
  .tone-nav { justify-content: flex-start; gap: 8px 12px; }
  .tone-nav a { font-size: 9px; }
  .chapter { grid-template-columns: 22px 1fr 22px; grid-template-rows: 14vh 1fr 20vh; }
  .chapter__copy, .chapter__copy--high, .chapter__copy--low, .chapter__copy--mid { grid-column: 2; grid-row: 2; align-self: center; justify-self: start; }
  h2 { font-size: clamp(45px, 16vw, 82px); }
  .resonance { width: 86vw; left: 7vw; right: auto; top: 24vh; opacity: .75; }
  .vertical-slip { right: 18px; top: 18vh; }
  .marginalia { left: 24px; right: auto; bottom: 7vh; text-align: left; }
  .fragment { font-size: 22vw; }
  .staff { height: 110px; }
}