@font-face {
  font-family: "Inter Tight";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("/fonts/inter-tight-latin-800-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/geist-latin-400-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/geist-mono-latin-400-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/geist-mono-latin-600-normal.woff2") format("woff2");
}

:root {
  --paper-bright: #f6f7f7;
  --tint: #082bb3;
  --tint-text: #dfe6fb;
  --glassine: #b8c6ee;
  --frank: #d21f1a;

  --ground: #011e78;
  --stamp-ink: #e52630;
  --case-face: #e8e5dc;
  --case-wall: #c9c5b9;
  --case-edge: #10153d;
  --case-edge-shade: #070a26;
  --eink: #e2dfd6;
  --eink-area: #d9d5ca;
  --eink-edge: #cbc6b9;
  --eink-edge-shade: #b3ae9f;
  --eink-ink: #3c3e52;
  --eink-quiet: #8d8a80;
  --pcb: #0a1656;
  --pcb-edge: #1d2e84;
  --pcb-edge-shade: #122172;
  --chip: #0c0f2e;
  --chip-edge: #191e4c;
  --chip-edge-shade: #05071c;
  --app-edge: #cfd6ee;
  --app-edge-shade: #a9b4db;
  --slot: #2a3274;
  --port: #02031a;
  --usb: #8592c4;
  --usb-edge: #5e6ba4;
  --usb-edge-shade: #47538c;
  --sheet: color-mix(in srgb, var(--glassine) 15%, transparent);
  --sheet-faint: color-mix(in srgb, var(--glassine) 5%, transparent);
  --ink-line: color-mix(in srgb, var(--paper-bright) 86%, transparent);
  --hair: 1px;
  --rule: rgb(184 198 238 / 0.45);
  --grid-minor: rgb(120 150 240 / 0.07);
  --grid-major: rgb(120 150 240 / 0.15);
  --grid-cell: 26px;
  --grid-angle: 26.57deg;
  --grid:
    repeating-linear-gradient(
      var(--grid-angle),
      var(--grid-major) 0 1px,
      transparent 1px calc(var(--grid-cell) * 4)
    ),
    repeating-linear-gradient(
      calc(180deg - var(--grid-angle)),
      var(--grid-major) 0 1px,
      transparent 1px calc(var(--grid-cell) * 4)
    ),
    repeating-linear-gradient(
      var(--grid-angle),
      var(--grid-minor) 0 1px,
      transparent 1px var(--grid-cell)
    ),
    repeating-linear-gradient(
      calc(180deg - var(--grid-angle)),
      var(--grid-minor) 0 1px,
      transparent 1px var(--grid-cell)
    );

  --font-display: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --font-text: "Geist", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --gutter: clamp(1rem, 5vw, 6rem);
  --chrome: clamp(2rem, 6.5vh, 4.5rem);
  --panel-w: min(34rem, 38vw);

  --fs-title: clamp(2.25rem, min(5vw, 9.4svh), 5.5rem);
  --fs-closing: clamp(2rem, min(13svh, calc((100vw - var(--gutter) * 2) / 14.6)), 6rem);
  --fs-word: clamp(2.5rem, min(7vw, 12.5svh, calc(var(--panel-w) / 5.4)), 8rem);
  --fs-thesis: clamp(1.125rem, 0.6rem + 0.7vw, 1.375rem);
  --fs-fact: clamp(1rem, 0.85rem + 0.25vw, 1.125rem);
  --fs-sub: clamp(1.125rem, 0.25rem + 1vw, 1.375rem);
  --fs-stamp: clamp(1.25rem, 0.5rem + 0.9vw, 1.75rem);
  --fs-address: clamp(1.25rem, 0.25rem + 1.1vw, 1.5rem);

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  background-color: var(--ground);
  color: var(--paper-bright);
  scrollbar-color: var(--glassine) var(--ground);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100svh;
  background-color: var(--ground);
  background-image: var(--grid);
  font-family: var(--font-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--frank);
  color: var(--paper-bright);
}

:focus-visible {
  outline: 2px solid var(--glassine);
  outline-offset: 3px;
}

h1,
h2,
p,
ul,
ol {
  margin: 0;
}

/* drawing:start */
.exploded {
  --u: calc(100cqw / 720);
  --cx: 206;
  --tag-x: 452;
  --h: 907;
  aspect-ratio: 720 / 907;
  container: side / inline-size;
}

.layer--app {
  --y: 108.67;
  --shut: 329.03;
  --xo: 0;
  --ax: -198.34;
  --ay: -100.67;
  --aw: 396.69;
  --ah: 202.77;
  --dx: 105.18;
  --dy: 67.62;
}

.layer--case {
  --y: 252.99;
  --shut: 186.71;
  --xo: 0;
  --ax: -186.2;
  --ay: -94.6;
  --aw: 372.39;
  --ah: 216.8;
  --dx: 82.65;
  --dy: 31.3;
}

.layer--eink {
  --y: 363.49;
  --shut: 81.21;
  --xo: 0;
  --ax: -182.78;
  --ay: -92.89;
  --aw: 365.56;
  --ah: 191.3;
  --dx: 77.64;
  --dy: 28.8;
}

.layer--firmware {
  --y: 470.24;
  --shut: -19.54;
  --xo: 0;
  --ax: -190.83;
  --ay: -96.91;
  --aw: 381.66;
  --ah: 193.83;
  --dx: 80.14;
  --dy: 30.05;
}

.layer--schematic {
  --y: 578.24;
  --shut: -126.54;
  --xo: 0;
  --ax: -190.83;
  --ay: -96.91;
  --aw: 381.66;
  --ah: 193.83;
  --dx: 80.14;
  --dy: 30.05;
}

.layer--pcb {
  --y: 686.86;
  --shut: -233.17;
  --xo: 0;
  --ax: -183.08;
  --ay: -93.04;
  --aw: 366.17;
  --ah: 190.99;
  --dx: 78.89;
  --dy: 29.43;
}

.layer--chip {
  --y: 824.29;
  --shut: -359.42;
  --xo: -12.52;
  --ax: -51.91;
  --ay: -27.46;
  --aw: 103.83;
  --ah: 59.21;
  --dx: 50.09;
  --dy: 0;
}

@media (max-width: 760px), (max-width: 1100px) and (orientation: portrait) {
  .exploded {
    --cx: 200;
    --tag-x: 403;
    --h: 585;
    aspect-ratio: 720 / 585;
    container-name: stack;
  }

  .layer--app {
    --y: 106.67;
    --shut: 170.03;
  }

  .layer--case {
    --y: 204.99;
    --shut: 73.71;
  }

  .layer--eink {
    --y: 269.49;
    --shut: 14.21;
  }

  .layer--firmware {
    --y: 330.24;
    --shut: -40.54;
  }

  .layer--schematic {
    --y: 392.24;
    --shut: -101.54;
  }

  .layer--pcb {
    --y: 454.86;
    --shut: -162.17;
  }

  .layer--chip {
    --y: 546.29;
    --shut: -242.42;
  }
}
/* drawing:end */

.layer {
  --tag-left: calc(var(--tag-x) * var(--u));
  position: absolute;
  left: calc((var(--cx) + var(--xo, 0)) * var(--u));
  top: calc(var(--y) * var(--u));
  width: 0;
  height: 0;
}

.layer__art {
  position: absolute;
  left: calc(var(--ax) * var(--u));
  top: calc(var(--ay) * var(--u));
  width: calc(var(--aw) * var(--u));
  height: calc(var(--ah) * var(--u));
  overflow: visible;
}

.layer__lead {
  position: absolute;
  left: calc(var(--dx) * var(--u));
  top: calc((var(--dy) - 6) * var(--u));
  width: calc(var(--tag-left) - (10 + var(--cx) + var(--xo) + var(--dx)) * var(--u));
  height: calc(12 * var(--u));
  background:
    linear-gradient(to right, var(--paper-bright), var(--paper-bright)) 0 50% / 100% 1px no-repeat;
  transform-origin: 0 50%;
}

.layer__lead::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--paper-bright);
}

.layer__dot {
  --size: max(4px, calc(5 * var(--u)));
  position: absolute;
  left: calc(var(--dx) * var(--u) - var(--size) / 2);
  top: calc(var(--dy) * var(--u) - var(--size) / 2);
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background-color: var(--paper-bright);
}

.tag {
  --num-size: max(10px, calc(10.5 * var(--u)));
  --title-size: max(11px, calc(16 * var(--u)));
  --sub-size: max(11px, calc(12.5 * var(--u)));
  /* From the label's top to the middle of its title, which sits on the leader. */
  --title-mid: calc(var(--num-size) * 1.3 + 3 * var(--u) + var(--title-size) * 0.575);
  position: absolute;
  left: calc(var(--tag-left) - (var(--cx) + var(--xo)) * var(--u));
  top: calc(var(--dy) * var(--u) - var(--title-mid));
  transform-origin: 0 var(--title-mid);
  display: grid;
  justify-items: start;
  font-family: var(--font-mono);
  white-space: nowrap;
  color: var(--paper-bright);
}

.tag__num {
  font-size: var(--num-size);
  line-height: 1.3;
  letter-spacing: 0.08em;
  color: var(--glassine);
}

.tag__title {
  margin-block-start: calc(3 * var(--u));
  font-weight: 600;
  font-size: var(--title-size);
  line-height: 1.15;
  letter-spacing: 0.08em;
}

.tag__sub {
  margin-block-start: calc(4 * var(--u));
  font-size: var(--sub-size);
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--glassine);
}

.tag__stamp {
  position: relative;
  margin-block-start: calc(7 * var(--u));
  padding: 0.2em 0.42em 0.14em 0.48em;
  border: 0.16em solid currentColor;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: calc(21 * var(--u));
  line-height: 1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stamp-ink);
  rotate: var(--tilt);
  mask: url("/media/stamp-wear-open.svg") var(--wear) / 240% 240% no-repeat;
}

.tag__stamp::before {
  content: "";
  position: absolute;
  inset: 0.17em;
  border: 0.07em solid currentColor;
  translate: 0.05em -0.03em;
}

@container side (width < 540px) {
  .tag__sub {
    display: none;
  }
}

@container side (width < 420px) {
  .tag__num,
  .tag__stamp {
    display: none;
  }
}

.layer--app {
  --tilt: -5deg;
  --wear: 8% 14%;
}

.layer--case {
  --tilt: -3deg;
  --wear: 92% 30%;
}

.layer--eink {
  --tilt: -6deg;
  --wear: 40% 88%;
}

.layer--firmware {
  --tilt: -2.5deg;
  --wear: 70% 62%;
}

.layer--schematic {
  --tilt: -4.5deg;
  --wear: 18% 70%;
}

.layer--pcb {
  --tilt: -3.5deg;
  --wear: 58% 6%;
}

.layer--chip {
  --tilt: -5.5deg;
  --wear: 96% 96%;
}

.layer__art text {
  font-family: var(--font-mono);
}

.layer__art [class^="s-"],
.layer__art [class*=" s-"] {
  fill: none;
  stroke-width: var(--hair);
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.f-app {
  fill: var(--paper-bright);
}

.f-app-l {
  fill: var(--app-edge);
}

.f-app-r {
  fill: var(--app-edge-shade);
}

.f-app-panel {
  fill: var(--tint);
}

.f-app-thumb {
  fill: var(--eink);
}

.f-app-thumb-screen {
  fill: var(--eink-area);
}

.f-app-blob {
  fill: var(--case-edge);
}

.f-app-thumb-line {
  fill: var(--eink-quiet);
}

.f-app-panel-line {
  fill: color-mix(in srgb, var(--tint-text) 50%, transparent);
}

.f-app-ink,
.layer__art .t-app-ink {
  fill: var(--ground);
}

.layer__art .t-app-quiet {
  fill: color-mix(in srgb, var(--ground) 55%, transparent);
}

.layer__art .t-app-mark {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
  fill: var(--paper-bright);
}

.layer__art .t-app-head {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
  fill: var(--ground);
}

.layer__art .s-app {
  stroke: color-mix(in srgb, var(--ground) 45%, transparent);
}

.f-case-l {
  fill: var(--case-edge);
}

.f-case-r {
  fill: var(--case-edge-shade);
}

.f-case-face {
  fill: var(--case-face);
}

.f-case-wall {
  fill: var(--case-wall);
}

.layer__art .s-case-rim {
  stroke: color-mix(in srgb, var(--paper-bright) 75%, transparent);
}

.f-case-key {
  fill: var(--slot);
}

.f-case-port {
  fill: var(--port);
}

.f-ink {
  fill: var(--eink);
}

.f-ink-l {
  fill: var(--eink-edge);
}

.f-ink-r {
  fill: var(--eink-edge-shade);
}

.f-ink-area {
  fill: var(--eink-area);
}

.layer__art .s-ink-bevel {
  stroke: var(--eink-edge-shade);
}

.t-ink {
  fill: var(--eink-ink);
}

.t-ink-quiet,
.f-ink-dot {
  fill: var(--eink-quiet);
}

.layer__art .t-ink-head,
.layer__art .t-ink-amount {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  fill: var(--eink-ink);
}

.layer__art .t-ink-amount {
  letter-spacing: -0.04em;
}

.f-ink-rule {
  fill: var(--eink-quiet);
}

.layer__art .s-sheet {
  fill: var(--sheet);
  stroke: color-mix(in srgb, var(--tint-text) 55%, transparent);
}

.layer__art .s-sheet-dash {
  fill: var(--sheet-faint);
  stroke: color-mix(in srgb, var(--tint-text) 60%, transparent);
  stroke-dasharray: 4 3;
}

.t-code {
  fill: var(--paper-bright);
}

.t-code-quiet {
  fill: color-mix(in srgb, var(--glassine) 75%, transparent);
}

.layer__art .s-line {
  stroke: var(--ink-line);
}

.t-net {
  fill: color-mix(in srgb, var(--paper-bright) 80%, transparent);
}

.f-pcb {
  fill: var(--pcb);
}

.f-pcb-l {
  fill: var(--pcb-edge);
}

.f-pcb-r {
  fill: var(--pcb-edge-shade);
}

.layer__art .s-pcb-rim {
  stroke: color-mix(in srgb, var(--glassine) 30%, transparent);
}

.layer__art .s-trace {
  stroke: var(--paper-bright);
  stroke-width: calc(var(--hair) * 1.75);
}

.layer__art .s-trace-quiet {
  stroke: color-mix(in srgb, var(--glassine) 60%, transparent);
}

.f-pad {
  fill: color-mix(in srgb, var(--tint-text) 85%, transparent);
}

.f-hole {
  fill: var(--ground);
  stroke: var(--paper-bright);
  stroke-width: 0.5;
}

.t-silk {
  fill: color-mix(in srgb, var(--paper-bright) 72%, transparent);
}

.f-usb {
  fill: var(--usb);
}

.f-usb-l {
  fill: var(--usb-edge);
}

.f-usb-r {
  fill: var(--usb-edge-shade);
}

.f-chip {
  fill: var(--chip);
}

.f-chip-l {
  fill: var(--chip-edge);
}

.f-chip-r {
  fill: var(--chip-edge-shade);
}

.f-pin {
  fill: var(--usb);
}

.f-die {
  fill: var(--tint);
}

.f-cell {
  fill: color-mix(in srgb, var(--glassine) 70%, transparent);
}

.f-cell-dim {
  fill: color-mix(in srgb, var(--glassine) 32%, transparent);
}

.layer__art .s-die {
  stroke: color-mix(in srgb, var(--tint-text) 45%, transparent);
}

.layer__art .s-die-rim {
  stroke: color-mix(in srgb, var(--tint-text) 70%, transparent);
}

.f-chip-mark {
  fill: var(--paper-bright);
}

/* Without scripts, or with reduced motion: one sheet read top to bottom, the open stack still
   beside the opening, the layers as plain sections and the ending as the last one. */
.view {
  display: grid;
  grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
  column-gap: 3vw;
  padding: var(--chrome) var(--gutter);
}

.opening {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  min-height: calc(100svh - var(--chrome) * 2);
}

.frame {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
}

.exploded {
  position: relative;
  width: min(calc((100svh - 1.5rem) * 720 / var(--h)), 100%);
  margin-inline: auto;
  user-select: none;
}

.chapters {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(3rem, 8vh, 5rem) 6vw;
  margin-block-start: clamp(4rem, 12vh, 8rem);
}

.bridge {
  grid-column: 1 / -1;
}

.ending {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-block: clamp(6rem, 20vh, 12rem) clamp(1rem, 4vh, 2rem);
}

.index {
  display: none;
}

.statement {
  margin-block: auto;
  padding-block: 2rem;
}

.title {
  text-wrap: balance;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-title);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--paper-bright);
}

.title span {
  display: block;
  width: fit-content;
}

:root:not(.is-scroll) .title {
  font-size: min(var(--fs-title), 4.3vw);
}

.sub {
  max-width: 34ch;
  margin-block-start: clamp(1.25rem, 3.5vh, 2.25rem);
  font-size: var(--fs-sub);
  line-height: 1.45;
  color: var(--tint-text);
  text-wrap: pretty;
}

.cue {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--glassine);
}

.cue__line {
  flex: 1;
  max-width: 14rem;
  height: 1px;
  background-color: var(--glassine);
  transform-origin: 0 50%;
}

.chapter h2 {
  padding-block-end: 0.06em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-word);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--paper-bright);
}

.thesis {
  max-width: 24em;
  margin-block-start: clamp(1rem, 2.6vh, 1.75rem);
  font-size: var(--fs-thesis);
  line-height: 1.35;
  color: var(--paper-bright);
  text-wrap: balance;
}

.facts {
  display: grid;
  gap: 0.625rem;
  margin-block-start: clamp(1rem, 2.6vh, 1.5rem);
  padding: clamp(1rem, 2.4vh, 1.375rem) 0 0;
  border-block-start: 1px solid var(--rule);
  list-style: none;
}

.facts li {
  position: relative;
  max-width: 38em;
  padding-inline-start: 1.375em;
  font-size: var(--fs-fact);
  line-height: 1.5;
  color: var(--tint-text);
  text-wrap: pretty;
}

.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 0.625em;
  height: 1px;
  background-color: var(--glassine);
}

.bridge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-word);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--paper-bright);
}

.bridge span {
  display: block;
}

.closing {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-closing);
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--paper-bright);
}

/* The closing line breaks by meaning: after each .wide part on wide screens, after each
   .narrow part on phones. */
.closing .narrow::after,
.closing .wide::after {
  white-space: pre;
}

.closing .wide::after {
  content: "\A";
}

.ending__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-block-start: clamp(1.75rem, 5vh, 3rem);
}

.stamp {
  position: relative;
  padding: 0.5em 0.62em 0.44em 0.7em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-stamp);
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--stamp-ink);
  border: 0.13em solid currentColor;
  rotate: -6deg;
}

.stamp::before,
.stamp::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.stamp::before {
  inset: 0.14em;
  border: 0.055em solid currentColor;
  translate: 0.05em -0.03em;
}

.stamp::after {
  inset: -0.13em;
  background: url("/media/stamp-wear-1.png") 0 0 / 100% 100% no-repeat;
}

.address {
  display: flex;
  align-items: center;
  gap: 0.7em;
  margin-block-start: clamp(1.5rem, 4vh, 2.5rem);
  padding-block-start: clamp(1rem, 2.4vh, 1.5rem);
  border-block-start: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--fs-address);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper-bright);
}

.address::before {
  content: "";
  flex: none;
  width: 0.6em;
  height: 0.6em;
  background-color: var(--frank);
}

.small {
  max-width: 40rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--glassine);
  text-wrap: balance;
}

.address + .small {
  margin-block-start: clamp(1rem, 2.6vh, 1.5rem);
}

@keyframes stamp-land {
  from {
    opacity: 0;
    scale: 1.9;
    rotate: -14deg;
  }

  55% {
    opacity: 1;
    scale: 0.97;
    rotate: -6deg;
  }

  to {
    opacity: 1;
    scale: 1;
    rotate: -6deg;
  }
}

@keyframes open-land {
  from {
    opacity: 0;
    transform: scale(1.9) rotate(-12deg);
  }

  55% {
    opacity: 1;
    transform: scale(0.96) rotate(0deg);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

/* The scroll story: a tall track under one pinned stage. The script maps scroll progress to
   one paused animation timeline and adds .is-scroll only when motion is allowed. */
.is-scroll .track {
  height: calc(var(--screens) * 100svh + 100lvh);
}

.is-scroll .stage {
  position: sticky;
  top: 0;
  height: 100lvh;
  overflow: clip;
  background-color: var(--ground);
  background-image: var(--grid);
}

.is-scroll .view {
  position: relative;
  display: block;
  height: 100svh;
  padding: 0;
}

.is-scroll .frame {
  position: absolute;
  inset: 0;
  align-self: auto;
}

.is-scroll:not(.is-built) .frame {
  visibility: hidden;
}

.is-scroll .camera {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 0 0;
}

.is-scroll .exploded {
  width: 58vw;
  margin: 0;
}

.is-scroll .opening {
  position: absolute;
  z-index: 1;
  left: var(--gutter);
  top: 0;
  bottom: 0;
  width: min(52vw - var(--gutter), 50rem);
  min-height: 0;
  padding-block: var(--chrome);
}

.is-scroll .chapters {
  display: block;
  margin: 0;
}

.is-scroll .chapter,
.is-scroll .bridge {
  position: absolute;
  z-index: 1;
  left: var(--gutter);
  top: 50%;
  width: var(--panel-w);
  translate: 0 -50%;
}

.is-scroll .bridge {
  width: max-content;
}

.is-scroll .ending {
  position: absolute;
  z-index: 1;
  inset: 0;
  justify-content: center;
  padding: var(--chrome) var(--gutter);
}

.is-scroll .chapter,
.is-scroll .bridge,
.is-scroll .ending,
.is-scroll .index {
  opacity: 0;
}

.is-scroll .opening,
.is-scroll .chapter,
.is-scroll .bridge,
.is-scroll .ending {
  pointer-events: none;
}

.is-scroll .is-here {
  pointer-events: auto;
}

.is-scroll .index {
  position: absolute;
  z-index: 1;
  left: var(--gutter);
  bottom: var(--chrome);
  display: flex;
  gap: 1.25rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--glassine);
}

.index li {
  position: relative;
  padding-block-end: 0.625rem;
  opacity: 0.8;
  transition: opacity 200ms ease-out;
}

.index li::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background-color: currentColor;
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 300ms var(--ease-out-expo);
}

.index li.is-here {
  opacity: 1;
  color: var(--paper-bright);
}

.index li.is-here::after {
  transform: none;
}

.is-scroll .tag__stamp {
  opacity: 0;
}

.is-scroll .is-stamped .tag__stamp {
  opacity: 1;
  animation: open-land 560ms var(--ease-out-expo) 420ms backwards;
}

.is-scroll .is-instant .tag__stamp {
  animation: none;
}

.is-scroll .ending .stamp,
.is-scroll .ending .address,
.is-scroll .ending .small {
  opacity: 0;
}

.is-scroll .ending .address,
.is-scroll .ending .small {
  transition: opacity 500ms ease-out;
}

.is-scroll .ending.is-landed .stamp {
  opacity: 1;
  animation: stamp-land 560ms var(--ease-out-expo) 200ms backwards;
}

.is-scroll .ending.is-landed .address {
  opacity: 1;
  transition-delay: 700ms;
}

.is-scroll .ending.is-landed .small {
  opacity: 1;
  transition-delay: 950ms;
}

@media (max-width: 760px), (max-width: 1100px) and (orientation: portrait) {
  :root {
    --chrome: 1.25rem;
    --fs-title: clamp(2rem, 9.4vw, 3.5rem);
    --fs-closing: clamp(2.25rem, 10vw, 4.5rem);
    --fs-word: clamp(2.25rem, 13vw, 4.5rem);
    --fs-thesis: 1.0625rem;
    --fs-fact: 0.9375rem;
    --fs-sub: 1.0625rem;
    --fs-stamp: 1.25rem;
    --fs-address: 1.25rem;
  }

  .view {
    display: flex;
    flex-direction: column;
  }

  :root:not(.is-scroll) .title {
    font-size: var(--fs-title);
  }

  .title span {
    display: inline;
  }

  .opening {
    min-height: 0;
  }

  .statement {
    padding-block: 2rem 1.5rem;
  }

  .frame {
    margin: 2rem calc(var(--gutter) * -1) 0;
  }

  .exploded {
    width: 100vw;
  }

  .chapters {
    grid-template-columns: minmax(0, 1fr);
    gap: 3rem;
    margin-block-start: 3.5rem;
  }

  .chapter {
    max-width: 40rem;
  }

  .thesis {
    text-wrap: pretty;
  }

  .facts {
    gap: 0.4rem;
  }

  .facts li {
    line-height: 1.42;
  }

  .ending {
    padding-block: 6rem 1rem;
  }

  .layer {
    --tag-left: min(calc(var(--tag-x) * var(--u)), calc(50vw + 50cqw - 172px));
  }

  .tag {
    top: calc(var(--dy) * var(--u));
    display: flex;
    align-items: center;
    gap: calc(6 * var(--u));
    translate: 0 -50%;
    transform-origin: 0 50%;
  }

  .tag__num {
    font-size: clamp(10px, calc(16 * var(--u)), 13px);
    line-height: 1;
  }

  .tag__title {
    margin: 0;
    font-size: clamp(11px, calc(19 * var(--u)), 15px);
    line-height: 1;
    letter-spacing: 0.05em;
  }

  .tag__sub {
    display: none;
  }

  .tag__stamp {
    margin: 0 0 0 calc(2 * var(--u));
    font-size: clamp(9.5px, calc(18 * var(--u)), 14px);
  }

  .is-scroll .frame {
    margin: 0;
  }

  .is-scroll .exploded {
    width: 100vw;
  }

  .is-scroll .opening {
    left: 0;
    right: 0;
    width: auto;
    padding: 1rem var(--gutter) 1.25rem;
  }

  .is-scroll .statement {
    margin-block: auto 0;
    padding-block: 0 1.25rem;
  }

  .is-scroll .chapter,
  .is-scroll .bridge {
    top: auto;
    right: var(--gutter);
    bottom: 1.25rem;
    width: auto;
    max-width: 40rem;
    translate: none;
  }

  .is-scroll .index {
    display: none;
  }

  .is-scroll .tag__title {
    display: none;
  }

  .closing .wide::after {
    content: none;
  }

  .closing .narrow::after {
    content: "\A";
  }
}

.is-moving .camera {
  will-change: transform;
}