:root {
  /* Design typography tokens: IBM Plex Sans JP** for bilingual-feeling fragments; Roboto Flex** for coordinate labels. */
  --lacquer: #07060A;
  --marble: #10251F;
  --oxblood: #6E1423;
  --magenta: #FF2BD6;
  --chartreuse: #C8FF2E;
  --cyan: #00E7FF;
  --champagne: #E8C46A;
  --paper: #F5E7C8;
  --display: "Fraunces", Georgia, serif;
  --hud: "Roboto Flex", "Inter", system-ui, sans-serif;
  --jp: "IBM Plex Sans JP", system-ui, sans-serif;
  --design-font-token-jp: "JP**";
  --design-font-token-flex: "Flex**";
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--paper);
  background: var(--lacquer);
  font-family: var(--hud);
  cursor: crosshair;
}

.marble-field,
.neon-reflection,
.glass-smudge,
.hud-shell {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.marble-field {
  z-index: -4;
  background:
    radial-gradient(circle at var(--mx, 50%) var(--my, 45%), rgba(0, 231, 255, .2), transparent 18rem),
    radial-gradient(circle at 18% 12%, rgba(245, 231, 200, .13), transparent 18rem),
    radial-gradient(circle at 75% 24%, rgba(255, 43, 214, .15), transparent 22rem),
    linear-gradient(128deg, transparent 0 14%, rgba(16, 37, 31, .85) 15%, transparent 18% 33%, rgba(110, 20, 35, .55) 34%, transparent 38% 61%, rgba(232, 196, 106, .18) 62%, transparent 65%),
    repeating-linear-gradient(116deg, rgba(245, 231, 200, .04) 0 1px, transparent 1px 37px),
    linear-gradient(150deg, #07060A, #10251F 45%, #07060A 72%);
  filter: contrast(1.18) saturate(1.2);
  animation: marbleDrift 18s ease-in-out infinite alternate;
}

.marble-field::before {
  content: "";
  position: absolute;
  inset: -20%;
  opacity: .34;
  background:
    radial-gradient(ellipse at 25% 25%, transparent 0 35%, rgba(0, 231, 255, .22) 36%, transparent 37%),
    radial-gradient(ellipse at 70% 60%, transparent 0 42%, rgba(255, 43, 214, .24) 43%, transparent 44%),
    repeating-conic-gradient(from 35deg, transparent 0 13deg, rgba(245, 231, 200, .035) 14deg, transparent 15deg);
  mix-blend-mode: screen;
  animation: waterStone 22s linear infinite;
}

.neon-reflection {
  z-index: -3;
  background:
    linear-gradient(90deg, transparent, rgba(255, 43, 214, .16), transparent 32%, rgba(0, 231, 255, .14), transparent),
    conic-gradient(from 180deg at var(--mx, 50%) var(--my, 50%), transparent, rgba(200, 255, 46, .08), transparent, rgba(232, 196, 106, .1), transparent);
  mix-blend-mode: screen;
  transform: translate3d(calc((var(--px, 0) * 1px)), calc((var(--py, 0) * 1px)), 0);
}

.glass-smudge {
  z-index: -2;
  opacity: .2;
  background: repeating-linear-gradient(92deg, transparent 0 18px, rgba(245,231,200,.08) 19px, transparent 21px);
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 72%);
}

.hud-shell { z-index: 20; }

.corner {
  position: absolute;
  width: clamp(70px, 9vw, 140px);
  height: clamp(70px, 9vw, 140px);
  border-color: rgba(232, 196, 106, .78);
  transition: transform .35s ease;
}
.corner-tl { top: 22px; left: 22px; border-top: 1px solid; border-left: 1px solid; }
.corner-tr { top: 22px; right: 22px; border-top: 1px solid; border-right: 1px solid; }
.corner-bl { bottom: 22px; left: 22px; border-bottom: 1px solid; border-left: 1px solid; }
.corner-br { bottom: 22px; right: 22px; border-bottom: 1px solid; border-right: 1px solid; }

.edge-rail {
  position: absolute;
  left: 9vw;
  right: 9vw;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: rgba(245, 231, 200, .72);
  font: 500 .68rem/1 var(--hud);
  letter-spacing: .18em;
  text-transform: uppercase;
  font-variation-settings: "wdth" 118, "GRAD" 80;
}
.edge-rail i { flex: 1; height: 1px; background: linear-gradient(90deg, var(--cyan), var(--magenta), var(--champagne)); opacity: .54; }
.rail-top { top: 28px; }
.rail-bottom { bottom: 28px; }
.side-label {
  position: absolute;
  top: 50%;
  color: rgba(0, 231, 255, .62);
  font: 400 .72rem/1 var(--jp);
  letter-spacing: .28em;
  writing-mode: vertical-rl;
  text-transform: uppercase;
}
.side-label.left { left: 28px; transform: translateY(-50%) rotate(180deg); }
.side-label.right { right: 28px; transform: translateY(-50%); color: rgba(255, 43, 214, .58); }

.scene {
  position: relative;
  min-height: 100vh;
  padding: clamp(5rem, 10vw, 9rem) clamp(2rem, 8vw, 8rem);
  isolation: isolate;
}

.scene::before {
  content: attr(data-scene);
  position: absolute;
  top: 18%;
  right: clamp(2rem, 9vw, 9rem);
  color: rgba(200, 255, 46, .7);
  font: 600 .72rem/1 var(--hud);
  letter-spacing: .22em;
  text-transform: uppercase;
}

.hero { display: grid; align-content: center; min-height: 100svh; }
.scene-number {
  position: absolute;
  left: 10vw;
  top: 16vh;
  color: rgba(232, 196, 106, .22);
  font: 800 clamp(8rem, 22vw, 24rem)/.72 var(--display);
}
.micro-label {
  margin: 0 0 1rem 7vw;
  color: var(--chartreuse);
  font: 650 clamp(.65rem, 1vw, .8rem)/1 var(--hud);
  letter-spacing: .28em;
}
.wordmark {
  position: relative;
  z-index: 2;
  width: min-content;
  margin: 0 0 0 6vw;
  font-family: var(--display);
  font-size: clamp(4.8rem, 15vw, 18rem);
  line-height: .78;
  font-weight: 720;
  font-variation-settings: "SOFT" var(--soft, 35), "WONK" 1, "opsz" 144;
  letter-spacing: -.08em;
  color: var(--paper);
  text-shadow: 0 0 28px rgba(0, 231, 255, .16), 0 0 54px rgba(255, 43, 214, .14);
  transition: font-variation-settings .45s ease, letter-spacing .45s ease;
}
.wordmark span { color: var(--champagne); text-shadow: 0 0 32px var(--magenta); }
.hero-lens {
  position: absolute;
  left: 42vw;
  top: 22vh;
  width: 34vw;
  aspect-ratio: 1;
  border: 1px solid rgba(0, 231, 255, .3);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,231,200,.08), transparent 61%);
  box-shadow: inset 0 0 50px rgba(0, 231, 255, .16), 0 0 70px rgba(255, 43, 214, .1);
  backdrop-filter: blur(2px);
}
.baseline-wave {
  position: absolute;
  left: 0;
  right: 0;
  top: 51%;
  width: 100%;
  height: 20vh;
  z-index: 3;
  opacity: .9;
}
.wave,
.scope {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 1300;
  stroke-dashoffset: 1300;
  animation: drawWave 5.5s ease-in-out infinite alternate;
}
.magenta { stroke: var(--magenta); filter: drop-shadow(0 0 18px var(--magenta)); }
.cyan { stroke: var(--cyan); filter: drop-shadow(0 0 18px var(--cyan)); animation-delay: -.9s; }
.date-seal,
.artifact-seal {
  border: 1px solid rgba(232, 196, 106, .68);
  color: var(--champagne);
  background: rgba(110, 20, 35, .22);
  box-shadow: inset 0 0 18px rgba(232, 196, 106, .09), 0 0 26px rgba(255, 43, 214, .11);
}
.date-seal {
  position: absolute;
  right: 16vw;
  top: 24vh;
  width: 5.5rem;
  height: 5.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  text-align: center;
  font: 700 .78rem/1.2 var(--hud);
  letter-spacing: .16em;
}
.artifact-seal {
  width: max-content;
  margin: 8vh 0 0 7vw;
  padding: .9rem 1.25rem;
  border-radius: 99rem;
  font: 650 .72rem/1 var(--hud);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.artifact-seal:hover, .date-seal:hover { color: var(--paper); background: rgba(232,196,106,.18); }
.note-fragment {
  position: absolute;
  right: 10vw;
  bottom: 16vh;
  width: min(22rem, 34vw);
  padding: 1.2rem;
  color: var(--lacquer);
  background: linear-gradient(135deg, var(--paper), #E8C46A);
  clip-path: polygon(0 8%, 94% 0, 100% 88%, 8% 100%);
  font-family: var(--jp);
  transform: rotate(-2deg);
}
.note-fragment b, .note-fragment span { display: block; }
.note-fragment span { margin-top: .45rem; }

.chapter-heading { max-width: 58rem; }
.chapter-heading span {
  color: var(--chartreuse);
  font: 650 .8rem/1 var(--hud);
  letter-spacing: .36em;
}
.chapter-heading h2 {
  margin: .35rem 0;
  color: var(--paper);
  font: 760 clamp(3rem, 8vw, 9rem)/.86 var(--display);
  letter-spacing: -.06em;
  font-variation-settings: "SOFT" 20, "WONK" 1;
}
.scene-marble { display: grid; align-items: center; grid-template-columns: 1fr 42vw; gap: 4vw; }
.marble-orb {
  position: relative;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 45% 35%, rgba(245,231,200,.2), transparent 12%),
    linear-gradient(128deg, transparent 0 22%, rgba(0,231,255,.5) 23%, transparent 25% 51%, rgba(255,43,214,.45) 52%, transparent 54%),
    radial-gradient(circle at 50% 50%, #10251F, #07060A 70%);
  box-shadow: inset 0 0 70px #07060A, 0 0 80px rgba(0,231,255,.16), 0 0 120px rgba(255,43,214,.12);
  overflow: hidden;
}
.marble-orb::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 1px solid rgba(232,196,106,.36);
  border-radius: 50%;
}
.moon-disc { position: absolute; width: 32%; aspect-ratio: 1; right: 14%; top: 12%; border-radius: 50%; background: var(--paper); opacity: .85; box-shadow: 0 0 35px rgba(245,231,200,.4); }
.fan-ribs { position: absolute; inset: 12%; background: repeating-conic-gradient(from 220deg, rgba(232,196,106,.28) 0 1deg, transparent 1deg 10deg); border-radius: 50%; opacity: .34; }
.edge-copy { align-self: end; max-width: 24rem; color: rgba(245,231,200,.76); font: 400 clamp(1rem, 1.4vw, 1.35rem)/1.45 var(--jp); }
.scratch-caption { position: absolute; left: 11vw; bottom: 16vh; color: var(--champagne); font: 600 .76rem/1 var(--hud); letter-spacing: .2em; text-transform: uppercase; }
.scratch-caption::after { content: attr(data-hidden); display: block; max-width: 0; overflow: hidden; white-space: nowrap; color: var(--magenta); transition: max-width .5s ease; }
.scratch-caption:hover::after { max-width: 24rem; }

.scene-confession { display: grid; grid-template-columns: minmax(15rem, 36rem) 1fr; align-items: center; gap: 7vw; }
.left-stack h2 { font-size: clamp(3.5rem, 7vw, 8rem); }
.paper-note {
  position: relative;
  width: min(34rem, 86vw);
  padding: clamp(1.6rem, 3vw, 3rem);
  color: var(--lacquer);
  background: linear-gradient(145deg, #F5E7C8, #E8C46A 145%);
  box-shadow: 0 35px 90px rgba(0,0,0,.45), inset 0 0 0 1px rgba(110,20,35,.28);
  clip-path: polygon(2% 0, 100% 4%, 96% 100%, 0 93%);
  font-family: var(--jp);
}
.paper-note p { margin: 0; font-size: clamp(1.25rem, 2.5vw, 2.2rem); line-height: 1.35; }
.primary-note { transform: rotate(2deg); }
.secondary-note { margin: -2rem 0 0 15vw; transform: rotate(-4deg); background: #F5E7C8; }
.secondary-note p { font-size: clamp(1rem, 1.5vw, 1.35rem); }
.stamp { position: absolute; top: 1rem; right: 1rem; color: var(--oxblood); border: 2px solid var(--oxblood); border-radius: 50%; padding: .4rem; font-weight: 700; transform: rotate(14deg); }
.newspaper-columns { position: absolute; bottom: 12vh; left: 8vw; right: 8vw; columns: 4; column-rule: 1px solid rgba(232,196,106,.22); color: rgba(245,231,200,.28); font: 700 .8rem/1.6 var(--jp); letter-spacing: .18em; }

.scene-wave { display: grid; place-items: center; }
.wave-chamber { position: absolute; inset: 14vh 5vw; border: 1px solid rgba(0,231,255,.22); background: radial-gradient(circle, rgba(0,231,255,.05), transparent 65%); overflow: hidden; }
.oscilloscope { position: absolute; inset: 0; width: 100%; height: 100%; }
.scope { stroke-width: 4; }
.scope-a { stroke: var(--magenta); filter: drop-shadow(0 0 18px var(--magenta)); }
.scope-b { stroke: var(--cyan); filter: drop-shadow(0 0 18px var(--cyan)); animation-delay: -1.4s; }
.reticle { position: absolute; inset: 18%; border: 1px solid rgba(232,196,106,.3); border-radius: 50%; }
.reticle::before, .reticle::after { content: ""; position: absolute; background: rgba(232,196,106,.35); }
.reticle::before { left: 50%; top: -8%; bottom: -8%; width: 1px; }
.reticle::after { top: 50%; left: -8%; right: -8%; height: 1px; }
.wave-title { position: relative; z-index: 2; text-align: center; mix-blend-mode: screen; }
.ring-bank { position: absolute; right: 14vw; bottom: 18vh; display: flex; gap: 1.1rem; }
.ring-bank i { width: 3rem; aspect-ratio: 1; border: 1px solid var(--chartreuse); border-radius: 50%; box-shadow: 0 0 24px rgba(200,255,46,.22); animation: ringPulse 2.8s ease-in-out infinite; }
.ring-bank i:nth-child(2) { animation-delay: .4s; border-color: var(--cyan); }
.ring-bank i:nth-child(3) { animation-delay: .8s; border-color: var(--magenta); }

.scene-afterimage { display: grid; align-content: center; justify-items: end; text-align: right; }
.eclipse { position: absolute; left: 10vw; top: 18vh; width: min(48vw, 38rem); aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 40% 40%, var(--champagne), var(--oxblood) 45%, #07060A 72%); box-shadow: 0 0 90px rgba(232,196,106,.15); }
.eclipse-shadow { position: absolute; inset: 12%; border-radius: 50%; background: #07060A; transform: translate(16%, -8%); box-shadow: inset 0 0 40px rgba(0,231,255,.12); }
.final-heading, .closing-copy, .final-tags { position: relative; z-index: 2; max-width: 54rem; }
.closing-copy { color: rgba(245,231,200,.74); font: 400 clamp(1.2rem, 2.2vw, 2rem)/1.35 var(--jp); }
.final-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .6rem; }
.final-tags span { border: 1px solid rgba(232,196,106,.35); padding: .55rem .7rem; color: var(--champagne); font: 600 .68rem/1 var(--hud); letter-spacing: .16em; text-transform: uppercase; }

.paper-note, .note-fragment { transition: transform .25s ease; }
.is-open .hero-lens { animation: lensOpen 1.1s ease forwards; }

@keyframes marbleDrift { from { background-position: 0 0, 0 0, 0 0, 0 0, 0 0, 0 0; } to { background-position: 8% 6%, -6% 4%, 5% -5%, 12% 8%, 30px 90px, 0 0; } }
@keyframes waterStone { to { transform: rotate(360deg) scale(1.08); } }
@keyframes drawWave { 0% { stroke-dashoffset: 1300; } 45%, 100% { stroke-dashoffset: 0; } }
@keyframes ringPulse { 50% { transform: scale(1.35); opacity: .42; } }
@keyframes lensOpen { 50% { transform: scale(1.18); border-color: var(--chartreuse); } 100% { transform: scale(1); } }

@media (max-width: 820px) {
  .edge-rail { left: 5rem; right: 5rem; }
  .side-label { display: none; }
  .wordmark { margin-left: 0; }
  .note-fragment { position: relative; right: auto; bottom: auto; width: 100%; margin-top: 2rem; }
  .scene-marble, .scene-confession { grid-template-columns: 1fr; }
  .marble-orb { width: min(82vw, 30rem); }
  .newspaper-columns { columns: 2; }
}