:root {
  /* Compliance tokens from DESIGN.md typography extraction: San* navigation labels discipline Mon* */
  --black: #050505;
  --white: #F7F1E3;
  --red: #E21B2D;
  --cyan: #00A6D6;
  --blue: #003E7E;
  --yellow: #F5C400;
  --shadow: #2A2722;
  --rule: clamp(4px, 0.55vw, 8px);
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; background: var(--black); color: var(--black); }

body {
  font-family: "IBM Plex Sans", Inter, Arial, sans-serif;
  overflow: hidden;
}

button { font: inherit; }

.xity-shell {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 18%, rgba(0,166,214,.18) 0 7%, transparent 8%),
    linear-gradient(90deg, rgba(5,5,5,.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(5,5,5,.06) 1px, transparent 1px),
    var(--white);
  background-size: auto, 42px 42px, 42px 42px, auto;
}

.chapter {
  position: absolute;
  inset: 0;
  padding: clamp(12px, 2vw, 28px);
  opacity: 0;
  transform: translateY(8vh) scale(.985);
  transition: opacity .55s ease, transform .65s cubic-bezier(.19, 1, .22, 1);
  pointer-events: none;
}

.chapter.is-current { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }

.bento-grid {
  width: 100%;
  height: 100%;
  display: grid;
  gap: var(--rule);
  background: var(--black);
  border: var(--rule) solid var(--black);
}

.cell {
  position: relative;
  overflow: hidden;
  background: var(--white);
  padding: clamp(14px, 2.1vw, 34px);
  transform-origin: center;
  transition: transform .28s cubic-bezier(.2,.8,.2,1), filter .28s ease, box-shadow .28s ease;
  isolation: isolate;
}

.hover-cell:hover { transform: scale(1.045); z-index: 8; filter: saturate(1.08); box-shadow: 0 0 0 var(--rule) var(--black); }

.micro-label {
  margin: 0;
  font: 700 clamp(10px, .9vw, 13px)/1 "IBM Plex Sans", Arial, sans-serif;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--shadow);
}

.vertical { writing-mode: vertical-rl; text-orientation: mixed; }

h1, h2, strong, .yellow-stamp, .arrow-box { font-family: "Bungee", Impact, fantasy; font-weight: 400; }

.arrival-grid { grid-template-columns: repeat(12, 1fr); grid-template-rows: repeat(8, 1fr); }
.station-tower { grid-column: 1 / 7; grid-row: 1 / 6; }
.pool-panel { grid-column: 7 / 11; grid-row: 1 / 5; }
.ticket-stub { grid-column: 11 / 13; grid-row: 1 / 7; }
.avenue-panel { grid-column: 1 / 9; grid-row: 6 / 9; }
.utility-red { grid-column: 9 / 11; grid-row: 5 / 9; }
.arrival .utility:not(.utility-red) { grid-column: 11 / 13; grid-row: 7 / 9; }

.wordmark {
  margin: 2vh 0 0 -1.2vw;
  font-size: clamp(58px, 13.4vw, 210px);
  line-height: .78;
  letter-spacing: -.08em;
  color: var(--black);
  max-width: 95%;
  text-shadow: 9px 9px 0 rgba(42,39,34,.12);
}

.origin-bubble {
  position: absolute;
  width: clamp(34px, 5vw, 76px);
  height: clamp(34px, 5vw, 76px);
  right: 10%;
  bottom: 22%;
  border: 8px solid var(--cyan);
  border-radius: 50%;
  background: rgba(247,241,227,.22);
  box-shadow: inset -10px -14px 0 rgba(0,62,126,.18), 0 0 0 3px var(--white);
  animation: pulseBubble 3.8s ease-in-out infinite;
  mix-blend-mode: multiply;
}

.seal {
  border-radius: 50%;
  background: var(--black);
  color: var(--white);
  display: grid;
  place-items: center;
  position: relative;
  font-family: "Bungee", Impact, fantasy;
}
.seal span { color: var(--red); font-size: 60%; line-height: 1; }
.seal em { position: absolute; right: 20%; bottom: 20%; font: 700 18%/1 "Space Mono", monospace; color: var(--white); }
.small-seal { width: 82px; height: 82px; position: absolute; left: 5%; bottom: 7%; transform: rotate(-9deg); }

.pool-panel h2, .map-title h2, .memory-copy h2, .final-ticket h2 {
  margin: clamp(18px, 4vh, 44px) 0 0;
  font-size: clamp(34px, 6vw, 94px);
  line-height: .88;
  letter-spacing: -.04em;
  position: relative;
  z-index: 2;
}

.pool-tiles {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5,5,5,.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(5,5,5,.12) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: .48;
}

.ticket-stub { background: var(--yellow); display: flex; flex-direction: column; justify-content: space-between; align-items: flex-start; }
.ticket-stub strong { font-size: clamp(36px, 6vw, 92px); writing-mode: vertical-rl; transform: rotate(180deg); }
.ticket-stub small, .final-ticket small { font: 700 12px/1.2 "Space Mono", monospace; letter-spacing: .08em; }
.perforation { position: absolute; top: 0; bottom: 0; left: 30%; border-left: 5px dotted var(--black); opacity: .65; }

.avenue-panel { display: grid; grid-template-columns: 1fr auto; align-items: end; background: var(--blue); color: var(--white); }
.avenue-panel .micro-label { color: var(--white); grid-column: 1 / -1; }
.avenue-panel p:last-of-type { max-width: 780px; font-size: clamp(22px, 3vw, 54px); line-height: .95; margin: 0; }
.arrow { font: 400 clamp(70px, 11vw, 160px)/.7 "Bungee"; color: var(--red); }

.utility { display: flex; flex-direction: column; justify-content: space-between; background: var(--white); }
.utility span { font: 700 12px/1 "Space Mono", monospace; }
.utility b { font: 400 clamp(44px, 7vw, 116px)/.8 "Bungee"; }
.utility-red { background: var(--red); color: var(--white); }

.map-grid { grid-template-columns: repeat(12, 1fr); grid-template-rows: repeat(8, 1fr); }
.map-title { grid-column: 1 / 6; grid-row: 1 / 5; }
.route-number { grid-column: 6 / 9; grid-row: 1 / 4; background: var(--red); color: var(--white); }
.map-grid .pool-panel { grid-column: 9 / 13; grid-row: 1 / 6; }
.coordinate-card { grid-column: 1 / 4; grid-row: 5 / 9; }
.archive-label { grid-column: 4 / 10; grid-row: 4 / 9; }
.arrow-box { grid-column: 10 / 13; grid-row: 6 / 9; background: var(--yellow); display: grid; place-items: center; font-size: clamp(82px, 14vw, 210px); color: var(--black); }
.route-number span { font: 700 14px/1 "Space Mono", monospace; letter-spacing: .16em; }
.route-number strong { display: block; font-size: clamp(70px, 14vw, 230px); line-height: .85; }
.cyan { background: var(--cyan); color: var(--black); }
.route-line { position: absolute; inset: 18% 10%; border: 8px solid var(--black); border-left: 0; border-bottom: 0; }
.route-line i { position: absolute; width: 28px; height: 28px; border-radius: 50%; background: var(--red); border: 5px solid var(--black); }
.route-line i:nth-child(1) { left: -10px; top: -18px; }
.route-line i:nth-child(2) { right: 35%; top: -18px; }
.route-line i:nth-child(3) { right: -18px; bottom: -10px; }
.coordinate-card dl { display: grid; grid-template-columns: auto 1fr; gap: 12px 24px; font: 700 clamp(18px, 3vw, 42px)/1 "Space Mono", monospace; }
.coordinate-card dt { color: var(--red); }
.coordinate-card dd { margin: 0; }
.archive-label { display: flex; align-items: center; justify-content: space-around; gap: 4vw; background: var(--white); }
.archive-label p { max-width: 420px; font-size: clamp(22px, 3vw, 48px); line-height: .95; margin: 0; }
.stamp-ring { width: clamp(120px, 17vw, 250px); height: clamp(120px, 17vw, 250px); border: 10px solid var(--red); border-radius: 50%; display: grid; place-items: center; transform: rotate(-14deg); font: 700 clamp(16px, 2vw, 30px)/1 "Space Mono", monospace; color: var(--red); }

.memory-grid { grid-template-columns: repeat(12, 1fr); grid-template-rows: repeat(8, 1fr); }
.memory-copy { grid-column: 1 / 7; grid-row: 1 / 6; }
.blue-depth { grid-column: 7 / 13; grid-row: 1 / 5; background: var(--blue); color: var(--white); }
.phone-dots { grid-column: 1 / 5; grid-row: 6 / 9; background: var(--white); }
.yellow-stamp { grid-column: 5 / 9; grid-row: 6 / 9; background: var(--yellow); display: grid; place-items: center; text-align: center; font-size: clamp(30px, 5vw, 90px); line-height: .9; }
.skinny-code { grid-column: 9 / 13; grid-row: 5 / 9; background: var(--red); color: var(--white); writing-mode: vertical-rl; display: flex; justify-content: space-between; align-items: center; }
.memory-copy > p:last-child { max-width: 620px; font-size: clamp(18px, 2vw, 32px); line-height: 1.04; }
.blue-depth strong { position: absolute; right: 4%; bottom: -8%; font-size: clamp(90px, 20vw, 330px); line-height: .8; color: rgba(247,241,227,.16); }
.reflection { position: absolute; inset: -40% 20%; transform: rotate(24deg); background: rgba(247,241,227,.16); }
.dot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(10px, 2vw, 26px); margin-top: 8%; }
.dot-grid i { aspect-ratio: 1; border-radius: 50%; background: var(--black); box-shadow: inset -6px -6px 0 var(--cyan); }
.skinny-code span, .skinny-code b { font-family: "Space Mono", monospace; letter-spacing: .14em; }

.seal-grid { grid-template-columns: repeat(12, 1fr); grid-template-rows: repeat(8, 1fr); }
.final-ticket { grid-column: 3 / 11; grid-row: 2 / 8; display: grid; place-items: center; text-align: center; background: var(--white); }
.background-bubbles { grid-column: 1 / 13; grid-row: 1 / 9; background: var(--cyan); opacity: .82; }
.final-ticket { z-index: 3; }
.grand-seal { width: clamp(170px, 23vw, 360px); height: clamp(170px, 23vw, 360px); font-size: clamp(160px, 22vw, 330px); box-shadow: 0 0 0 14px var(--red), 0 0 0 24px var(--black); }
.final-ticket h2 { margin: clamp(28px, 4vh, 54px) 0 0; }
.final-ticket p { margin: 0; font-size: clamp(18px, 2.5vw, 38px); line-height: 1; }
.ticket-line { position: absolute; inset: 9% 4%; border: 5px dotted var(--black); pointer-events: none; }

.bubble {
  position: absolute;
  left: var(--x);
  bottom: -80px;
  width: var(--s);
  height: var(--s);
  border-radius: 50%;
  border: max(2px, calc(var(--s) * .08)) solid rgba(247,241,227,.92);
  background: rgba(0,166,214,.14);
  box-shadow: inset calc(var(--s) * -.16) calc(var(--s) * -.2) 0 rgba(0,62,126,.18), 0 0 0 1px rgba(5,5,5,.18);
  animation: rise var(--d) linear infinite;
  animation-delay: var(--delay);
  mix-blend-mode: screen;
  z-index: 1;
}

.bubble::after { content: ""; position: absolute; width: 22%; height: 22%; top: 18%; left: 22%; border-radius: 50%; background: rgba(247,241,227,.95); }

.chapter-rail {
  position: fixed;
  right: clamp(12px, 2vw, 28px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  display: grid;
  gap: 8px;
}

.rail-dot {
  width: 52px;
  height: 38px;
  border: 4px solid var(--black);
  background: var(--white);
  color: var(--black);
  font: 700 10px/1 "Space Mono", monospace;
  cursor: pointer;
}
.rail-dot.is-active { background: var(--red); color: var(--white); }

@keyframes rise {
  0% { transform: translate3d(0, 0, 0) scale(.8); opacity: 0; }
  12% { opacity: .95; }
  50% { transform: translate3d(var(--drift), -55vh, 0) scale(1); }
  100% { transform: translate3d(calc(var(--drift) * -1), -112vh, 0) scale(1.12); opacity: 0; }
}

@keyframes pulseBubble {
  0%, 100% { transform: scale(.82); }
  50% { transform: scale(1.18); }
}

@media (max-width: 760px) {
  body { overflow: auto; }
  .xity-shell { height: auto; min-height: 100vh; overflow: visible; }
  .chapter { position: relative; min-height: 100vh; opacity: 1; transform: none; pointer-events: auto; }
  .chapter-rail { display: none; }
  .bento-grid { grid-template-columns: repeat(4, 1fr); grid-template-rows: auto; min-height: calc(100vh - 24px); }
  .cell { grid-column: auto / span 4 !important; grid-row: auto !important; min-height: 170px; }
  .ticket-stub, .skinny-code { writing-mode: initial; }
  .ticket-stub strong { writing-mode: initial; transform: none; }
  .final-ticket { min-height: 72vh; }
}