:root {
  /* IBM Plex Sans* Sans** for concise captions */
  --typography-compliance-token: "Sans**";
  --kiln: #B85B3F;
  --clay: #7A3428;
  --cream: #F5E4C8;
  --blush: #D99973;
  --water: #8FCED6;
  --ink: #241612;
  --steam: #FFF6EA;
  --display: "Archivo Black", Impact, system-ui, sans-serif;
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "IBM Plex Sans", Inter, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--kiln);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 30;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 246, 234, .20), transparent 28%),
    radial-gradient(circle at 82% 78%, rgba(143, 206, 214, .16), transparent 34%),
    repeating-linear-gradient(90deg, rgba(36, 22, 18, .045) 0 1px, transparent 1px 8.333vw),
    linear-gradient(180deg, rgba(255, 246, 234, .10), rgba(36, 22, 18, .08));
  mix-blend-mode: soft-light;
}

.steam-field {
  position: fixed;
  inset: -20vh -10vw;
  pointer-events: none;
  z-index: 20;
  opacity: .55;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(255, 246, 234, .34), transparent 35%),
    radial-gradient(ellipse at 68% 10%, rgba(143, 206, 214, .16), transparent 24%),
    radial-gradient(ellipse at 48% 88%, rgba(245, 228, 200, .18), transparent 36%);
  filter: blur(24px);
  animation: steamMove 18s ease-in-out infinite alternate;
}

.date-nav {
  position: fixed;
  right: 2.1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: grid;
  gap: .7rem;
}

.nav-bubble {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-decoration: none;
  color: var(--steam);
  font: 600 .62rem/1 var(--sans);
  border: 1px solid rgba(255, 246, 234, .52);
  background: radial-gradient(circle at 34% 28%, rgba(255,246,234,.75), rgba(143,206,214,.18) 30%, rgba(122,52,40,.28) 70%);
  box-shadow: inset -9px -11px 22px rgba(36,22,18,.18), 0 0 0 0 rgba(143,206,214,.32);
  transition: transform .8s cubic-bezier(.16,1,.3,1), box-shadow .8s, background .8s;
}

.nav-bubble.active {
  transform: scale(1.35);
  color: var(--ink);
  background: radial-gradient(circle at 30% 25%, var(--steam), var(--water) 38%, rgba(217,153,115,.72) 72%);
  box-shadow: 0 0 34px rgba(143,206,214,.58), inset -10px -12px 24px rgba(36,22,18,.12);
}

.day-chamber {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(8, minmax(10vh, auto));
  padding: clamp(1.2rem, 3vw, 3rem);
  isolation: isolate;
}

.day-chamber::before,
.day-chamber::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.day-chamber::before {
  background:
    repeating-linear-gradient(0deg, transparent 0 42px, rgba(36,22,18,.045) 43px 44px),
    radial-gradient(circle at 18% 72%, rgba(143,206,214,.18), transparent 30%),
    radial-gradient(circle at 78% 24%, rgba(255,246,234,.20), transparent 26%);
}

.day-chamber::after {
  opacity: .32;
  background-image: radial-gradient(rgba(36,22,18,.18) .7px, transparent .7px);
  background-size: 12px 12px;
  mix-blend-mode: multiply;
}

.chamber-terracotta { background: linear-gradient(140deg, var(--kiln), var(--blush) 54%, var(--clay)); }
.chamber-cream { background: linear-gradient(125deg, var(--cream), var(--steam) 44%, var(--blush)); }
.chamber-clay { background: linear-gradient(140deg, var(--clay), var(--kiln) 56%, var(--blush)); color: var(--steam); }
.chamber-blue { background: linear-gradient(140deg, var(--water), var(--cream) 52%, var(--kiln)); }
.chamber-final { background: linear-gradient(150deg, var(--ink), var(--clay) 48%, var(--kiln)); color: var(--steam); }

.tile-grid {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(122,52,40,.28) 0 1px, transparent 1px 8.333vw);
  mix-blend-mode: multiply;
  opacity: .55;
}

.microcopy,
.annotation {
  font-family: var(--sans);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.microcopy {
  font-size: clamp(.62rem, .85vw, .82rem);
  font-weight: 600;
}

.annotation {
  font-size: clamp(.72rem, .95vw, .95rem);
  line-height: 1.65;
  text-transform: none;
  letter-spacing: .025em;
}

.cover-meta {
  grid-column: 8 / 12;
  grid-row: 1;
  color: var(--steam);
  align-self: end;
  text-align: right;
}

.domain-word {
  grid-column: 1 / -1;
  grid-row: 2 / 6;
  align-self: center;
  margin: 0 0 0 -1.1vw;
  color: var(--clay);
  font-family: var(--display);
  font-size: clamp(4.5rem, 13.7vw, 19rem);
  line-height: .72;
  letter-spacing: -.095em;
  font-weight: 900;
  display: flex;
  align-items: center;
  filter: url(#none);
  animation: wordRise 2.8s cubic-bezier(.16,1,.3,1) both;
  text-shadow: 0 16px 38px rgba(36,22,18,.12);
}

.dot-bubble {
  width: .62em;
  height: .62em;
  margin: 0 .045em;
  border-radius: 50%;
  position: relative;
  display: inline-grid;
  place-items: center;
  background: radial-gradient(circle at 34% 24%, var(--steam), rgba(143,206,214,.83) 24%, rgba(217,153,115,.42) 62%, rgba(122,52,40,.30));
  box-shadow: inset -.08em -.12em .22em rgba(36,22,18,.18), 0 0 .28em rgba(143,206,214,.55);
  animation: bubblePulse 5.4s ease-in-out infinite;
}

.dot-bubble i,
.dot-bubble::before,
.dot-bubble::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: .018em solid rgba(36,22,18,.56);
}

.dot-bubble i { width: 48%; height: 48%; animation: orbit 7s linear infinite; }
.dot-bubble::before { width: 72%; height: 72%; border-color: rgba(255,246,234,.72); animation: ripple 3.4s ease-out infinite; }
.dot-bubble::after { width: 15%; height: 15%; background: var(--steam); border: 0; transform: translate(-80%, -86%); }

.cover-annotation {
  grid-column: 2 / 5;
  grid-row: 6 / 8;
  color: var(--ink);
  align-self: center;
}

.scroll-note {
  grid-column: 9 / 12;
  grid-row: 8;
  align-self: end;
  justify-self: end;
  color: var(--steam);
}

.water-lens {
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 22%, rgba(255,246,234,.78), rgba(143,206,214,.26) 24%, rgba(245,228,200,.13) 52%, rgba(122,52,40,.16)),
    linear-gradient(135deg, rgba(255,246,234,.20), rgba(143,206,214,.20));
  border: 1px solid rgba(255,246,234,.46);
  box-shadow: inset -24px -30px 60px rgba(36,22,18,.18), inset 20px 18px 52px rgba(255,246,234,.22), 0 28px 90px rgba(36,22,18,.16);
  backdrop-filter: blur(8px);
  mix-blend-mode: normal;
  animation: buoy 10s ease-in-out infinite alternate;
}

.water-lens::before {
  content: "";
  position: absolute;
  inset: 9%;
  border-radius: 50%;
  border: 1px solid rgba(143,206,214,.62);
  box-shadow: 0 0 28px rgba(143,206,214,.32);
  animation: ringRotate 18s linear infinite;
}

.water-lens::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 40%, rgba(255,246,234,.35) 46%, transparent 58%);
  transform: translateX(-45%);
  animation: lensSheen 8s ease-in-out infinite;
}

.large-lens {
  grid-column: 7 / 12;
  grid-row: 4 / 8;
  width: clamp(18rem, 34vw, 36rem);
  height: clamp(18rem, 34vw, 36rem);
  justify-self: center;
  align-self: center;
}

.timeline-orbit {
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  border: 1px dashed rgba(36,22,18,.38);
  animation: orbit 24s linear infinite;
}

.timeline-orbit span {
  position: absolute;
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--water);
  box-shadow: 0 0 18px var(--water);
  left: 50%;
  top: 50%;
  transform: rotate(calc(var(--i) * 60deg)) translateY(-7rem);
}

.timeline-orbit span:nth-child(1) { --i: 0; }
.timeline-orbit span:nth-child(2) { --i: 1; }
.timeline-orbit span:nth-child(3) { --i: 2; }
.timeline-orbit span:nth-child(4) { --i: 3; }
.timeline-orbit span:nth-child(5) { --i: 4; }
.timeline-orbit span:nth-child(6) { --i: 5; }

.fragment {
  position: absolute;
  left: 22%;
  right: 18%;
  top: 30%;
  color: var(--ink);
  text-align: center;
}

.fragment b {
  display: block;
  font-family: var(--display);
  font-size: clamp(4rem, 8vw, 8rem);
  line-height: .8;
  color: var(--clay);
}

.fragment em {
  font-family: var(--serif);
  font-size: 2rem;
}

.fragment p { font: 500 .8rem/1.45 var(--sans); }

.giant-bleed {
  position: absolute;
  left: -1.2vw;
  bottom: -3.6vw;
  font-family: var(--display);
  font-size: clamp(7rem, 18vw, 24rem);
  line-height: .72;
  letter-spacing: -.09em;
  color: rgba(122,52,40,.18);
  text-transform: lowercase;
  pointer-events: none;
}

.giant-bleed.right {
  left: auto;
  right: -3vw;
  color: rgba(255,246,234,.16);
}

.chapter-label {
  grid-column: 2 / 5;
  grid-row: 2;
  align-self: end;
  color: currentColor;
  opacity: .72;
}

.chapter-copy {
  position: relative;
  z-index: 3;
  max-width: 36rem;
}

.chapter-copy h2 {
  font-family: var(--serif);
  font-size: clamp(3.3rem, 7.2vw, 8.4rem);
  line-height: .86;
  margin: 0 0 1.3rem;
  font-weight: 600;
  letter-spacing: -.045em;
}

.chapter-copy p {
  font: 500 clamp(1.05rem, 1.45vw, 1.45rem)/1.48 var(--sans);
  margin: 0;
}

.left-copy { grid-column: 2 / 7; grid-row: 3 / 6; }
.right-copy { grid-column: 7 / 12; grid-row: 3 / 6; }
.dark-copy { color: var(--ink); }
.final-copy { grid-column: 2 / 8; grid-row: 3 / 6; }

.artifact-bubble {
  width: clamp(18rem, 31vw, 34rem);
  height: clamp(18rem, 31vw, 34rem);
  z-index: 4;
}

.map-lens { grid-column: 7 / 12; grid-row: 3 / 7; justify-self: center; align-self: center; }
.newspaper-lens { grid-column: 2 / 6; grid-row: 3 / 7; justify-self: center; align-self: center; }
.chronometer-lens { grid-column: 8 / 12; grid-row: 3 / 7; justify-self: center; align-self: center; }

.map-lens svg {
  position: absolute;
  inset: 14%;
  width: 72%;
  height: 72%;
  fill: none;
  stroke: var(--clay);
  stroke-width: 2;
  opacity: .72;
}

.map-lens text { fill: var(--ink); stroke: none; font: 600 16px var(--sans); letter-spacing: .08em; }

.paper-strip {
  position: absolute;
  left: 16%;
  right: 16%;
  top: 22%;
  display: grid;
  gap: .55rem;
  transform: rotate(-7deg);
}

.paper-strip span {
  display: block;
  padding: .45rem .75rem;
  color: var(--ink);
  background: rgba(245,228,200,.48);
  border-bottom: 1px solid rgba(36,22,18,.24);
  font: 600 .8rem/1.1 var(--sans);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.paper-strip span:first-child { font-family: var(--display); font-size: 2.4rem; letter-spacing: -.06em; }

.stamp-ring {
  position: absolute;
  inset: 27%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid rgba(184,91,63,.52);
  color: var(--clay);
  text-align: center;
  font: 600 .7rem/1.4 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
  animation: ringRotate 26s linear infinite reverse;
}

.chrono-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(36,22,18,.45);
}

.ring-one { inset: 14%; border-style: dashed; animation: ringRotate 18s linear infinite; }
.ring-two { inset: 27%; border-color: rgba(143,206,214,.88); box-shadow: 0 0 30px rgba(143,206,214,.45); animation: ringRotate 12s linear infinite reverse; }

.chrono-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  font-family: var(--display);
  font-size: clamp(3.2rem, 6vw, 7rem);
  line-height: .82;
  color: var(--clay);
}

.chrono-center small {
  font: 600 .8rem/1 var(--sans);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
}

.margin-note {
  grid-column: 9 / 12;
  grid-row: 2 / 4;
  align-self: start;
  border-left: 1px solid currentColor;
  padding-left: 1rem;
  opacity: .78;
}

.margin-note.upper { grid-column: 8 / 11; grid-row: 1 / 3; justify-self: end; }

.constellation {
  grid-column: 7 / 12;
  grid-row: 2 / 7;
  position: relative;
}

.constellation span {
  position: absolute;
  width: clamp(2.4rem, 6vw, 6rem);
  height: clamp(2.4rem, 6vw, 6rem);
  border-radius: 50%;
  background: radial-gradient(circle at 28% 24%, var(--steam), rgba(143,206,214,.32) 42%, rgba(217,153,115,.12));
  border: 1px solid rgba(255,246,234,.4);
  animation: buoy 7s ease-in-out infinite alternate;
}

.constellation span:nth-child(1) { left: 8%; top: 12%; animation-delay: -1s; }
.constellation span:nth-child(2) { left: 42%; top: 2%; width: 3rem; height: 3rem; animation-delay: -2s; }
.constellation span:nth-child(3) { left: 68%; top: 22%; animation-delay: -.4s; }
.constellation span:nth-child(4) { left: 22%; top: 42%; width: 4rem; height: 4rem; animation-delay: -3s; }
.constellation span:nth-child(5) { left: 52%; top: 56%; width: 8rem; height: 8rem; animation-delay: -1.7s; }
.constellation span:nth-child(6) { left: 6%; top: 76%; width: 2rem; height: 2rem; animation-delay: -.8s; }
.constellation span:nth-child(7) { left: 78%; top: 72%; width: 5rem; height: 5rem; animation-delay: -4s; }

.closing-lens {
  grid-column: 7 / 11;
  grid-row: 5 / 8;
  width: clamp(15rem, 28vw, 30rem);
  height: clamp(15rem, 28vw, 30rem);
  justify-self: center;
  align-self: center;
  display: grid;
  place-items: center;
  padding: 3rem;
  text-align: center;
}

.closing-lens p {
  position: relative;
  z-index: 2;
  margin: 0;
  color: var(--steam);
  font: 600 italic clamp(2rem, 4vw, 4.4rem)/.9 var(--serif);
}

.reveal {
  opacity: 0;
  transform: translateY(42px) scale(.985);
  transition: opacity 1.4s cubic-bezier(.16,1,.3,1), transform 1.4s cubic-bezier(.16,1,.3,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes wordRise {
  from { transform: translateY(16vh); opacity: .05; filter: blur(10px); }
  to { transform: translateY(0); opacity: 1; filter: blur(0); }
}

@keyframes bubblePulse {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-.055em) scale(1.055); }
}

@keyframes orbit { to { transform: rotate(360deg); } }

@keyframes ripple {
  0% { transform: scale(.72); opacity: .72; }
  100% { transform: scale(1.46); opacity: 0; }
}

@keyframes buoy {
  from { transform: translate3d(0, -12px, 0) rotate(-1deg); }
  to { transform: translate3d(0, 16px, 0) rotate(1.2deg); }
}

@keyframes ringRotate { to { transform: rotate(360deg); } }

@keyframes lensSheen {
  0%, 40% { transform: translateX(-60%) rotate(8deg); opacity: .1; }
  70% { transform: translateX(72%) rotate(8deg); opacity: .48; }
  100% { transform: translateX(96%) rotate(8deg); opacity: 0; }
}

@keyframes steamMove {
  from { transform: translate3d(-2vw, -1vh, 0) scale(1); }
  to { transform: translate3d(2vw, 2vh, 0) scale(1.05); }
}

@media (max-width: 820px) {
  .date-nav { right: .8rem; gap: .45rem; }
  .nav-bubble { width: 1.8rem; height: 1.8rem; }
  .day-chamber { display: block; padding: 4.5rem 1.1rem 2rem; }
  .domain-word { font-size: clamp(3.7rem, 19vw, 8rem); display: block; line-height: .85; }
  .dot-bubble { display: inline-grid; vertical-align: middle; }
  .cover-meta, .scroll-note, .cover-annotation, .chapter-copy, .margin-note { max-width: calc(100% - 3rem); margin: 1rem 0; text-align: left; }
  .large-lens, .artifact-bubble, .closing-lens { width: min(78vw, 24rem); height: min(78vw, 24rem); margin: 2rem auto; }
  .giant-bleed { font-size: 27vw; bottom: 1rem; }
  .chapter-copy h2 { font-size: clamp(3rem, 16vw, 5.4rem); }
  .constellation { height: 45vh; }
}