/*
 * FheCat — a night sky of encrypted pixel cats.
 *
 * Pixel rules used everywhere on this page:
 * - fonts only at sizes that land on their 8px design grid (8, 16, 24, 32, 40, 48...)
 * - sprites are SVG with crisp edges, scaled by whole pixels (--u)
 * - no blur anywhere: hard shadows, notched pixel corners, no filters
 * - motion moves in whole-pixel steps (steps() timing)
 *
 * Fonts: Tiny5, Silkscreen, Press Start 2P (SIL Open Font License 1.1, see fonts/OFL-*.txt).
 */

@font-face {
  font-family: 'Tiny5';
  src: url('../fonts/tiny5-latin.woff2') format('woff2');
  font-display: block;
}
@font-face {
  font-family: 'Silkscreen';
  src: url('../fonts/silkscreen-latin.woff2') format('woff2');
  font-display: block;
}
@font-face {
  font-family: 'Press Start 2P';
  src: url('../fonts/press-start-2p-latin.woff2') format('woff2');
  font-display: block;
}

:root {
  --night: #032842;
  --deep: #021f36;
  --ink: #021a2e;
  --cloud: #0d3b55;
  --cloud-2: #113a53;
  --cloud-hi: #1d4e6c;
  --steel: #5e7b9d;
  --steel-2: #3e6d88;
  --steel-3: #2a4c66;
  --cyan: #0df3ff;
  --cyan-2: #10d5f7;
  --cyan-dim: #1c88a7;
  --white: #e6f2ff;
  --text: #b9cfe4;
  --muted: #7d9cba;
  --red: #ff5d73;

  --f-text: 'Tiny5', ui-monospace, monospace;
  --f-label: 'Silkscreen', ui-monospace, monospace;
  --f-mono: 'Press Start 2P', ui-monospace, monospace;

  --u: 4px;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--night);
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--night);
  color: var(--text);
  font: 24px/32px var(--f-text);
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: none;
  overflow-x: hidden;
}

::selection {
  background: var(--cyan);
  color: var(--ink);
}

a {
  color: inherit;
}

p {
  margin: 0 0 16px;
}

code {
  font: inherit;
  color: var(--cyan);
}

.sr {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 60;
  padding: 8px 16px;
  background: var(--cyan);
  color: var(--ink);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
}
.skip:focus {
  top: 16px;
}

:focus-visible {
  outline: 4px solid var(--white);
  outline-offset: 4px;
}

.wrap {
  position: relative;
  width: min(1152px, 100% - 48px);
  margin: 0 auto;
}

.mono {
  font-family: var(--f-mono);
  font-size: 16px;
  line-height: 24px;
}

/* ---------- sprites ---------- */

svg.px {
  display: block;
  flex: none;
  width: calc(var(--w) * var(--u));
  height: calc(var(--h) * var(--u));
  overflow: visible;
}

/* Animation frames: layers classed f0, f1... take turns. */
.px .f {
  visibility: hidden;
}
.px .f0 {
  visibility: visible;
}
.px.frames-2 .f {
  animation: fr2 var(--ft, 0.8s) infinite;
}
.px.frames-3 .f {
  animation: fr3 var(--ft, 0.9s) infinite;
}
.px.frames-4 .f {
  animation: fr4 var(--ft, 1.2s) infinite;
}
.px.frames-2 .f1 {
  animation-delay: calc(var(--ft, 0.8s) * -0.5);
}
.px.frames-3 .f1 {
  animation-delay: calc(var(--ft, 0.9s) * -2 / 3);
}
.px.frames-3 .f2 {
  animation-delay: calc(var(--ft, 0.9s) * -1 / 3);
}
.px.frames-4 .f1 {
  animation-delay: calc(var(--ft, 1.2s) * -0.75);
}
.px.frames-4 .f2 {
  animation-delay: calc(var(--ft, 1.2s) * -0.5);
}
.px.frames-4 .f3 {
  animation-delay: calc(var(--ft, 1.2s) * -0.25);
}
@keyframes fr2 {
  0% {
    visibility: visible;
  }
  50%,
  100% {
    visibility: hidden;
  }
}
@keyframes fr3 {
  0% {
    visibility: visible;
  }
  33.333%,
  100% {
    visibility: hidden;
  }
}
@keyframes fr4 {
  0% {
    visibility: visible;
  }
  25%,
  100% {
    visibility: hidden;
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* text that is still encrypted: each character hides behind a cipher block */
span.x {
  color: transparent;
  background: var(--cyan-dim);
}
span.x.x2 {
  background: var(--steel-3);
}

/* ---------- pixel UI: boxes, buttons, labels ---------- */

/* A panel with a notched 4px outline and a hard, stepped shadow. */
.box {
  --bd: var(--steel-2);
  --bg: var(--deep);
  position: relative;
  background: var(--bg);
  box-shadow:
    0 -4px 0 0 var(--bd),
    0 4px 0 0 var(--bd),
    -4px 0 0 0 var(--bd),
    4px 0 0 0 var(--bd),
    4px 8px 0 0 var(--ink),
    8px 4px 0 0 var(--ink);
}

.btn {
  --bg: var(--cyan);
  --fg: var(--ink);
  --edge: var(--cyan-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 48px;
  margin: 4px 4px 8px;
  padding: 0 20px;
  border: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  /* the fill grows 4px outwards except at the corners: a notched pixel button */
  box-shadow:
    0 -4px 0 0 var(--bg),
    0 4px 0 0 var(--bg),
    -4px 0 0 0 var(--bg),
    4px 0 0 0 var(--bg),
    0 8px 0 0 var(--edge);
}
.btn .px {
  --u: 2px;
}
.btn:hover {
  --bg: #7ffaff;
}
.btn:active {
  transform: translateY(4px);
  box-shadow:
    0 -4px 0 0 var(--bg),
    0 4px 0 0 var(--bg),
    -4px 0 0 0 var(--bg),
    4px 0 0 0 var(--bg);
}
.btn[disabled] {
  cursor: progress;
}
.btn-ghost {
  --bg: transparent;
  --fg: var(--cyan);
  box-shadow:
    0 -4px 0 0 var(--cyan),
    0 4px 0 0 var(--cyan),
    -4px 0 0 0 var(--cyan),
    4px 0 0 0 var(--cyan);
}
.btn-ghost:hover {
  --bg: var(--cyan);
  --fg: var(--ink);
}
.btn-sm {
  height: 40px;
  padding: 0 16px;
  gap: 8px;
}
.btn-wide {
  display: flex;
  width: calc(100% - 8px);
}

.label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font: 16px/24px var(--f-label);
  color: var(--cyan);
  text-transform: uppercase;
}
.label .px {
  --u: 2px;
}
.label-center {
  justify-content: center;
}

.link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 4px 0 0 var(--cyan-dim);
}
.link .px {
  --u: 2px;
}
.link:hover {
  color: var(--white);
  box-shadow: 0 4px 0 0 var(--white);
}

h2 {
  margin: 0 0 24px;
  font: 48px/48px var(--f-text);
  font-weight: 400;
  color: var(--white);
}

.blink-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  animation: blink 1s steps(1) infinite;
}

/* ---------- top bar ---------- */

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
}
.topbar.solid {
  background: var(--ink);
  box-shadow: 0 4px 0 0 var(--cloud);
}
.bar {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-logo {
  --u: 2px;
}
.brand-logo .glow {
  display: none;
}
.brand-word .px {
  --u: 2px;
}
.meter {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  font: 16px/24px var(--f-label);
  color: var(--muted);
  text-transform: uppercase;
}
.meter-bar {
  display: flex;
  gap: 4px;
}
.meter-bar i {
  width: 8px;
  height: 16px;
  background: var(--cloud);
}
.meter-bar i.on {
  background: var(--cyan);
}
.meter-pct {
  width: 64px;
  color: var(--cyan);
}
.meter.done .meter-label {
  color: var(--cyan);
}
.meter-line {
  display: none;
}

/* ---------- hero: the banner, alive ---------- */

.hero {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100svh;
  padding: 104px 0 176px;
  overflow: hidden;
  isolation: isolate;
}
.scene {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.scene svg {
  position: absolute;
  left: 0;
  display: block;
}
.scene .sky,
.scene .ground {
  top: 0;
}
.scene .clouds-strip {
  bottom: 0;
}
.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.hero-logo {
  --u: 6px;
  margin-bottom: 32px;
}
.hero-logo .br-l {
  animation: nudge-l 2.4s steps(1) infinite;
}
.hero-logo .br-r {
  animation: nudge-r 2.4s steps(1) infinite;
}
.hero-logo .toe-top {
  animation: nudge-up 2.4s steps(1) infinite 0.3s;
}
.hero-logo .glow {
  animation: blink 2.4s steps(1) infinite;
}
@keyframes nudge-l {
  50% {
    transform: translateX(-1px);
  }
}
@keyframes nudge-r {
  50% {
    transform: translateX(1px);
  }
}
@keyframes nudge-up {
  50% {
    transform: translateY(-1px);
  }
}
.hero-word {
  margin: 0;
  line-height: 0;
}
.hero-word .px {
  --u: 8px;
}
.hero-tag {
  margin: 32px 0 8px;
  font: 32px/40px var(--f-text);
  color: var(--white);
}
.hero-sub {
  margin: 0 0 40px;
  font: 16px/24px var(--f-label);
  color: var(--steel);
  text-transform: uppercase;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
}
.sky-hint {
  position: absolute;
  left: 24px;
  bottom: 16px;
  margin: 0;
  font: 16px/24px var(--f-label);
  color: var(--steel-2);
  text-transform: uppercase;
}

/* scene layers */
.tw {
  animation: blink 4s steps(1) infinite;
}
.spark .spark-arms {
  animation: blink 2.2s steps(1) infinite;
}
.clouds-strip {
  animation: drift var(--drift, 200s) steps(var(--steps, 200)) infinite;
}
@keyframes drift {
  to {
    transform: translateX(-50%);
  }
}
.beacon {
  animation: blink 1.8s steps(1) infinite;
}
.beacon-2 {
  animation-delay: -0.9s;
}
.ring {
  opacity: 0;
  animation: ring 3s steps(1) infinite;
}
.ring-1 {
  animation-delay: 0.3s;
}
.ring-2 {
  animation-delay: 0.6s;
}
@keyframes ring {
  0% {
    opacity: 1;
  }
  20%,
  100% {
    opacity: 0;
  }
}
.firefly {
  animation: firefly 4s steps(4) infinite;
}
@keyframes firefly {
  0%,
  100% {
    opacity: 0.2;
    transform: translate(0, 0);
  }
  50% {
    opacity: 1;
    transform: translate(1px, -2px);
  }
}
.cat-a {
  animation: tail-a 3.2s steps(1) infinite;
}
.cat-b {
  animation: tail-b 3.2s steps(1) infinite;
}
@keyframes tail-a {
  50% {
    visibility: hidden;
  }
}
@keyframes tail-b {
  0% {
    visibility: hidden;
  }
  50% {
    visibility: visible;
  }
}
.cat-eyes {
  animation: eyes 4.5s steps(1) infinite;
}
@keyframes eyes {
  94% {
    visibility: hidden;
  }
}
.meteor {
  animation: meteor 1.2s steps(12) forwards;
}
@keyframes meteor {
  from {
    transform: translate(0, 0);
    opacity: 1;
  }
  to {
    transform: translate(-36px, 36px);
    opacity: 0;
  }
}
.tap-paw {
  position: absolute;
  z-index: 3;
  pointer-events: none;
  animation: tap-paw 1.2s steps(6) forwards;
}
@keyframes tap-paw {
  to {
    opacity: 0;
    transform: translateY(-16px);
  }
}

.cat-hit {
  position: absolute;
  z-index: 4;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}
.bubble {
  position: absolute;
  z-index: 5;
  margin: 0;
  padding: 8px 16px;
  background: var(--white);
  color: var(--ink);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  white-space: nowrap;
  box-shadow:
    0 -4px 0 0 var(--white),
    0 4px 0 0 var(--white),
    -4px 0 0 0 var(--white),
    4px 0 0 0 var(--white);
  visibility: hidden;
}
.bubble::after {
  /* tail: two stepped pixels */
  content: '';
  position: absolute;
  right: 24px;
  bottom: -12px;
  width: 8px;
  height: 8px;
  background: var(--white);
  box-shadow: 4px 4px 0 0 var(--white);
}
.bubble.on {
  visibility: visible;
}

/* ---------- ticker ---------- */

.ticker {
  position: relative;
  z-index: 3;
  height: 48px;
  overflow: hidden;
  background: var(--ink);
  box-shadow:
    0 -4px 0 0 var(--cloud-hi),
    0 4px 0 0 var(--cloud-hi);
}
.ticker-track {
  display: flex;
  align-items: center;
  width: max-content;
  height: 48px;
  animation: tick var(--dur, 60s) steps(var(--steps, 300)) infinite;
}
@keyframes tick {
  to {
    transform: translateX(calc(var(--dist, 1200px) * -1));
  }
}
.ticker-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-right: 24px;
  font: 16px/24px var(--f-label);
  color: var(--cyan-dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.ticker-item b {
  font-weight: 400;
  color: var(--cyan);
}
.ticker-item .px {
  --u: 2px;
  color: var(--steel-2);
}

/* ---------- chapters ---------- */

.chapter {
  position: relative;
  padding: 136px 0 128px;
}
.stars {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.stars svg {
  display: block;
}
.copy {
  position: relative;
}
.copy p {
  max-width: 720px;
}
.copy-wide p {
  max-width: 880px;
}

/* cloud ribbons between chapters */
.clouds {
  position: relative;
  z-index: 2;
  height: 128px;
  margin: -64px 0;
  overflow: hidden;
  pointer-events: none;
}
.clouds svg {
  position: absolute;
  left: 0;
  top: 0;
}

/* scroll reveal: appears in hard steps */
.rv {
  opacity: 0;
  transform: translateY(16px);
}
.rv.in {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.4s steps(4),
    transform 0.4s steps(2);
}

/* ---------- 01 specimen ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 440px;
  gap: 72px;
  align-items: center;
}
.specimen {
  margin: 4px 8px 8px 4px;
  padding: 24px;
}
.spec-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font: 16px/24px var(--f-label);
  color: var(--steel);
  text-transform: uppercase;
}
.spec-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
}
.spec-portrait {
  position: relative;
  display: grid;
  place-items: center;
  height: 240px;
  overflow: hidden;
  background: var(--ink);
  box-shadow: inset 0 0 0 4px var(--cloud);
}
.spec-cat {
  --u: 12px;
  --ft: 0.45s;
}
.specimen.scanning .spec-cat {
  --ft: 0.15s;
}
.scanline {
  position: absolute;
  left: 4px;
  right: 4px;
  top: 4px;
  height: 4px;
  background: var(--cyan);
  opacity: 0.35;
  animation: scan 3.2s steps(58) infinite;
}
.specimen.scanning .scanline {
  opacity: 0.8;
  animation-duration: 0.8s;
}
@keyframes scan {
  to {
    transform: translateY(228px);
  }
}
.stamp {
  position: absolute;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--red);
  font: 24px/32px var(--f-label);
  text-transform: uppercase;
  box-shadow:
    0 -4px 0 0 var(--red),
    0 4px 0 0 var(--red),
    -4px 0 0 0 var(--red),
    4px 0 0 0 var(--red);
  visibility: hidden;
}
.specimen.denied .stamp {
  visibility: visible;
}
.specimen.denied {
  animation: shake 0.4s steps(1) 1;
}
@keyframes shake {
  25% {
    transform: translateX(-8px);
  }
  50% {
    transform: translateX(8px);
  }
  75% {
    transform: translateX(-4px);
  }
}
.spec-data {
  display: grid;
  gap: 8px;
  margin: 24px 0;
}
.spec-data div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 24px;
}
.spec-data dt {
  font: 16px/24px var(--f-label);
  color: var(--muted);
  text-transform: uppercase;
}
.spec-data dd {
  display: flex;
  gap: 8px;
  margin: 0;
  font: 16px/24px var(--f-label);
  color: var(--white);
  text-transform: uppercase;
}
.spec-data dd.mono {
  font-family: var(--f-mono);
  color: var(--cyan);
  text-transform: none;
}
.redact {
  display: inline-block;
  width: 96px;
  height: 16px;
  background: repeating-linear-gradient(90deg, var(--cyan-dim) 0 12px, var(--steel-3) 12px 16px);
  animation: redact 0.9s steps(4) infinite;
}
.redact.short {
  width: 48px;
}
@keyframes redact {
  to {
    background-position: 16px 0;
  }
}
.peek-eye {
  --u: 2px;
}
.peek-eye .eye-shut {
  display: none;
}
.specimen.denied .peek-eye .eye-open {
  display: none;
}
.specimen.denied .peek-eye .eye-shut {
  display: inline;
}
.spec-msg {
  min-height: 24px;
  margin: 16px 0 0;
  font: 16px/24px var(--f-label);
  color: var(--muted);
  text-align: center;
  text-transform: uppercase;
}
.specimen.denied .spec-msg {
  color: var(--red);
}

/* ---------- 02 the FHE machine ---------- */

.stage {
  --u: 8px;
  margin: 56px 8px 40px 4px;
  padding: 48px 24px 24px;
  overflow: hidden;
}
.stage-inner {
  position: relative;
  width: calc(112 * var(--u));
  height: calc(36 * var(--u));
  margin: 0 auto;
}
.belt {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(30 * var(--u));
  height: calc(2 * var(--u));
  background: repeating-linear-gradient(90deg, var(--steel-2) 0 calc(2 * var(--u)), var(--steel-3) calc(2 * var(--u)) calc(4 * var(--u)));
}
.stage.moving .belt {
  animation: belt 0.4s steps(2) infinite;
}
@keyframes belt {
  to {
    background-position: calc(4 * var(--u)) 0;
  }
}
.actor {
  position: absolute;
  left: 0;
  top: 0;
}
.crate {
  width: calc(16 * var(--u));
}
.crate .tag {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% - var(--u) * 3);
  color: var(--cyan);
  text-align: center;
  white-space: nowrap;
}
.crate-digit {
  position: absolute;
  left: calc(5.5 * var(--u));
  top: calc(-7 * var(--u));
  visibility: hidden;
}
.crate-c.open .crate-digit {
  visibility: visible;
}
.crate-c.open .crate-lock {
  visibility: hidden;
}
.crate-c.open .crate-lid {
  transform: translateY(-4px);
}
.crate-c.open .tag {
  visibility: hidden;
}
.machine {
  z-index: 2;
}
.machine .mc-led,
.machine .mc-puff {
  visibility: hidden;
}
.machine .l0,
.machine .p0 {
  visibility: visible;
}
.stage.busy .machine .mc-led {
  animation: fr3 0.6s infinite;
}
.stage.busy .machine .l1 {
  animation-delay: -0.4s;
}
.stage.busy .machine .l2 {
  animation-delay: -0.2s;
}
.stage.busy .machine .mc-puff {
  animation: fr2 0.5s infinite;
}
.stage.busy .machine .p1 {
  animation-delay: -0.25s;
}
.machine .px {
  --ft: 2.4s;
}
.stage.busy .machine .px {
  --ft: 0.6s;
}
.machine-tag {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + var(--u) * 1);
  color: var(--steel);
  text-align: center;
}
.key-actor {
  z-index: 3;
  visibility: hidden;
}
.key-actor.on {
  visibility: visible;
}
.stage-status {
  margin: 32px 0 0;
  color: var(--cyan-dim);
  text-align: center;
  font-size: 8px;
  line-height: 16px;
}
.captions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  font: 16px/24px var(--f-text);
}
.captions b {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font: 16px/24px var(--f-label);
  font-weight: 400;
  color: var(--white);
  text-transform: uppercase;
}
.captions b .mono {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 16px;
}
.aside {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  max-width: 880px;
  margin: 0 0 32px 4px;
  padding: 16px 24px;
  background: var(--deep);
  box-shadow: -4px 0 0 0 var(--cyan);
}
.aside-paw {
  --u: 3px;
  margin-top: 4px;
}

/* ---------- 03 the star sky ---------- */

.skybox {
  --bg: #02203a;
  height: 448px;
  margin: 56px 8px 40px 4px;
  overflow: hidden;
  cursor: crosshair;
}
.skybox-stars {
  position: absolute;
  inset: 0;
}
.skybox-stars svg {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
}
.star {
  position: absolute;
  width: 24px;
  height: 24px;
  margin: -10px 0 0 -10px;
  padding: 0;
  border: 0;
  background: none;
  cursor: crosshair;
}
.star::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 10px;
  width: 4px;
  height: 4px;
  background: var(--c, #2c6989);
}
.star.big::before {
  box-shadow:
    4px 0 0 0 var(--c),
    -4px 0 0 0 var(--c),
    0 4px 0 0 var(--c),
    0 -4px 0 0 var(--c);
}
.star.twinkle::before {
  animation: blink var(--tw, 3s) steps(1) infinite var(--td, 0s);
}
.star.hot::before,
.star:hover::before {
  --c: var(--cyan);
  animation: none;
  box-shadow:
    4px 0 0 0 var(--cyan),
    -4px 0 0 0 var(--cyan),
    0 4px 0 0 var(--cyan),
    0 -4px 0 0 var(--cyan);
}
.reticle {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  width: 40px;
  height: 40px;
  visibility: hidden;
  pointer-events: none;
  /* four pixel corners */
  background:
    linear-gradient(var(--cyan), var(--cyan)) 0 0 / 12px 4px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 0 0 / 4px 12px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 100% 0 / 12px 4px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 100% 0 / 4px 12px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 0 100% / 12px 4px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 0 100% / 4px 12px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 100% 100% / 12px 4px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) 100% 100% / 4px 12px no-repeat;
}
.reticle.on {
  visibility: visible;
}
.peekcard {
  --bd: var(--cyan-dim);
  --bg: var(--ink);
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px;
  pointer-events: none;
}
.peekcard:not(.on) {
  display: none;
}
.peekcard p {
  margin: 0;
  white-space: nowrap;
}
.peekcard-cat {
  --u: 4px;
  --ft: 0.3s;
}
.peekcard-id {
  font: 16px/24px var(--f-label);
  color: var(--white);
  text-transform: uppercase;
}
.peekcard-dna {
  color: var(--cyan);
  font-size: 8px;
  line-height: 16px;
}
.peekcard-state {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 16px/24px var(--f-label);
  color: var(--cyan);
  text-transform: uppercase;
}
.skybox-count {
  position: absolute;
  right: 16px;
  bottom: 12px;
  margin: 0;
  color: var(--steel-2);
  font-size: 8px;
  line-height: 16px;
}
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 48px;
  margin: 0;
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
}
.facts div {
  display: flex;
  gap: 12px;
}
.facts dt {
  color: var(--muted);
}
.facts dt::after {
  content: ':';
}
.facts dd {
  margin: 0;
  color: var(--white);
}

/* ---------- 04 the night walk ---------- */

.path {
  position: relative;
  margin-top: 64px;
  --lamp-h: 96px;
}
.path::before {
  /* the ground line the cat walks on */
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: calc(var(--lamp-h) - 4px);
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--steel-2) 0 12px, transparent 12px 20px);
}
.path-walker {
  position: absolute;
  z-index: 2;
  left: 0;
  top: calc(var(--lamp-h) - 56px);
  --u: 4px;
}
.path-walker .px {
  --ft: 0.4s;
}
.path-walker.back .px {
  transform: scaleX(-1);
}
.path-walker:not(.walking) .f {
  animation: none;
}
.stops {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.stop {
  position: relative;
}
.lamp {
  --u: 4px;
  --ft: 0.5s;
}
.lamp .glass-on,
.lamp .rays {
  display: none;
}
.stop.lit .lamp .glass-off {
  display: none;
}
.stop.lit .lamp .glass-on,
.stop.lit .lamp .rays {
  display: inline;
}
.here {
  position: absolute;
  left: 72px;
  top: 8px;
  padding: 0 8px;
  background: var(--cyan);
  color: var(--ink);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  white-space: nowrap;
  box-shadow:
    0 -4px 0 0 var(--cyan),
    0 4px 0 0 var(--cyan);
}
.stop h3 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 24px 0 8px;
  font: 24px/32px var(--f-text);
  font-weight: 400;
  color: var(--white);
}
.stop h3 .mono {
  color: var(--cyan);
}
.stop p {
  margin: 0;
  font: 16px/24px var(--f-text);
}
.stop:not(.lit) h3 {
  color: var(--muted);
}

/* ---------- 05 encrypted inbox ---------- */

.inbox {
  margin: 56px 8px 8px 4px;
  padding: 8px 24px 16px;
}
.inbox-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 0 8px;
  padding: 16px 0;
  font: 16px/24px var(--f-label);
  color: var(--steel);
  text-transform: uppercase;
  box-shadow: 0 4px 0 0 var(--cloud);
}
.inbox-head .mono {
  color: var(--cyan);
  font-size: 8px;
  line-height: 16px;
}
.msgs {
  margin: 0;
  padding: 0;
  list-style: none;
}
.msg {
  box-shadow: 0 4px 0 0 var(--cloud);
}
.msg:last-child {
  box-shadow: none;
}
.msg-q {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  width: 100%;
  padding: 16px 0;
  border: 0;
  background: none;
  color: var(--white);
  font: 24px/32px var(--f-text);
  text-align: left;
  cursor: pointer;
}
.msg-q:hover .msg-title {
  color: var(--cyan);
}
.msg-env {
  --u: 3px;
}
.msg-env .env-open {
  display: none;
}
.msg.open .msg-env .env-closed {
  display: none;
}
.msg.open .msg-env .env-open {
  display: inline;
}
.msg-no {
  color: var(--steel);
}
.msg-act {
  margin-right: 4px;
  padding: 0 12px;
  color: var(--cyan);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  box-shadow:
    0 -4px 0 0 var(--cyan-dim),
    0 4px 0 0 var(--cyan-dim),
    -4px 0 0 0 var(--cyan-dim),
    4px 0 0 0 var(--cyan-dim);
}
.msg.open .msg-act {
  background: var(--cyan);
  color: var(--ink);
  box-shadow:
    0 -4px 0 0 var(--cyan),
    0 4px 0 0 var(--cyan),
    -4px 0 0 0 var(--cyan),
    4px 0 0 0 var(--cyan);
}
.msg-a {
  max-width: 1000px;
  max-height: 32px;
  margin: -4px 0 20px;
  padding: 0 0 0 122px;
  overflow: hidden;
  color: var(--steel-2);
  font: 8px/16px var(--f-mono);
  word-break: break-all;
}
.msg.open .msg-a {
  max-height: none;
  color: var(--text);
  font: 24px/32px var(--f-text);
  word-break: normal;
}

/* ---------- finale + footer ---------- */

.finale {
  position: relative;
  min-height: 760px;
  padding: 160px 0 320px;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
}
.finale-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.finale-inner p {
  max-width: 640px;
  margin-bottom: 40px;
}
.foot {
  padding: 24px 0;
  background: var(--ink);
  box-shadow: 0 -4px 0 0 var(--cloud);
  font: 16px/24px var(--f-label);
  color: var(--muted);
  text-transform: uppercase;
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
}

.toast {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 32px;
  z-index: 50;
  width: max-content;
  max-width: calc(100% - 48px);
  margin: 0 auto;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--cyan);
  font: 16px/24px var(--f-label);
  text-transform: uppercase;
  box-shadow:
    0 -4px 0 0 var(--cyan),
    0 4px 0 0 var(--cyan),
    -4px 0 0 0 var(--cyan),
    4px 0 0 0 var(--cyan);
  visibility: hidden;
}
.toast.on {
  visibility: visible;
}

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: 56px;
  }
  .specimen {
    width: min(440px, 100% - 12px);
  }
  .stage {
    --u: 6px;
  }
  .meter-label {
    display: none;
  }
}

@media (max-width: 860px) {
  h2 {
    font-size: 40px;
    line-height: 40px;
  }
  .hero-word .px {
    --u: 6px;
  }
  .hero-logo {
    --u: 5px;
  }
  .stage {
    --u: 5px;
  }
  .crate .tag,
  .machine-tag {
    font-size: 8px;
    line-height: 16px;
  }
  .captions {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
  .path {
    margin-top: 40px;
  }
  .path::before,
  .path-walker {
    display: none;
  }
  .stops {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
  .stop {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr);
    column-gap: 24px;
    align-items: start;
  }
  .stop .lamp {
    grid-row: span 3;
  }
  .stop h3 {
    margin-top: 8px;
  }
  .here {
    position: static;
    justify-self: start;
    margin: 12px 0 0 4px;
  }
  .msg-a {
    padding-left: 0;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
    line-height: 24px;
  }
  .wrap {
    width: calc(100% - 32px);
  }
  h2 {
    margin-bottom: 16px;
    font-size: 32px;
    line-height: 40px;
  }
  .bar {
    height: 64px;
    gap: 16px;
  }
  .meter {
    display: none;
  }
  .meter-line {
    position: absolute;
    left: 0;
    bottom: 0;
    display: block;
    width: 0;
    height: 4px;
    background: var(--cyan);
  }
  .brand {
    margin-right: auto;
  }
  .hide-sm {
    display: none;
  }
  .hero {
    padding: 96px 0 176px;
  }
  .hero-logo {
    --u: 4px;
    margin-bottom: 24px;
  }
  .hero-word .px {
    --u: 5px;
  }
  .hero-tag {
    margin-top: 24px;
    font-size: 24px;
    line-height: 32px;
  }
  .hero-sub {
    max-width: 280px;
    margin-bottom: 32px;
  }
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 320px;
  }
  .sky-hint {
    left: 16px;
    font-size: 8px;
    line-height: 16px;
  }
  .chapter {
    padding: 104px 0 96px;
  }
  .specimen {
    width: calc(100% - 12px);
    padding: 16px;
  }
  .spec-portrait {
    height: 200px;
  }
  .spec-cat {
    --u: 10px;
  }
  .scanline {
    animation-name: scan-sm;
    animation-timing-function: steps(48);
  }
  .stage {
    --u: 3px;
    margin-right: 4px;
    padding: 32px 8px 16px;
  }
  .skybox {
    height: 360px;
    margin-right: 4px;
  }
  .peekcard {
    gap: 12px;
    padding: 12px;
  }
  .peekcard-cat {
    --u: 3px;
  }
  .facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .facts div {
    flex-direction: column;
    gap: 0;
  }
  .facts dt::after {
    content: '';
  }
  .inbox {
    margin-right: 4px;
    padding: 0 16px 8px;
  }
  .msg-q {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px 16px;
    font-size: 16px;
    line-height: 24px;
  }
  .msg-no {
    display: none;
  }
  .msg-act {
    grid-column: 2;
    justify-self: start;
    margin: 4px 0 4px 4px;
  }
  .msg.open .msg-a {
    font-size: 16px;
    line-height: 24px;
  }
  .finale {
    min-height: 640px;
    padding: 120px 0 280px;
  }
  .foot-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}
@keyframes scan-sm {
  to {
    transform: translateY(188px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .px .f {
    visibility: hidden !important;
  }
  .px .f0 {
    visibility: visible !important;
  }
  .rv {
    opacity: 1;
    transform: none;
  }
}