:root {
  --brown: #454536;
  --logo-letter: #cdc8c3;
  --brand-letter-strength: 25%;
  --brand-letter-overlay-strength: 35%;
  --brand-letter-lighten: 50%;
  --brand-overlay-opacity: 0.9;
  --logo-letter-tint: 75%;
  --site-canvas-gutter: color-mix(in srgb, var(--logo-letter) 50%, white);
  --blue: #1a2744;
  --ink: #1a1613;
  --muted: #6b635c;
  --line: #e8e4df;
  --paper: #ffffff;
  --white: #ffffff;
  --title-serif: "Inter", system-ui, sans-serif;
  --sans: "Inter", system-ui, sans-serif;
  --max: 1180px;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
  --section-title-spacing: clamp(2rem, 5vw, 3.5rem);
  --transformation-pad-bottom: clamp(1.5rem, 4vw, 3rem);
  --applications-whitespace-above: var(--section-title-spacing);
  --term-detail-gap: 0.45rem;
  --feature-grid-gap: clamp(2rem, 4vw, 2.5rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --brand-stripe-duration: 40s;
  --brand-c-0: color-mix(in srgb, #243247 80%, gray);
  --brand-c-1: color-mix(in srgb, #8d4742 80%, gray);
  --brand-c-2: color-mix(in srgb, #896757 80%, gray);
  --brand-c-3: color-mix(in srgb, #a17f4f 58%, gray);
  --brand-c-4: color-mix(in srgb, #756a52 80%, gray);
  --brand-c-5: color-mix(in srgb, #5c5348 80%, gray);
  --brand-c-6: color-mix(in srgb, #612934 80%, gray);
  --brand-c-7: color-mix(in srgb, #604d4c 80%, gray);
  --igenda-photo-height: calc(100vw * 2752 / 6000);
  --sequence-frame-radius: clamp(0.35rem, 1vw, 0.65rem);
  --sequence-frame-gap: clamp(0.75rem, 2vw, 1.25rem);
  --sequence-visual-width: min(100%, 52rem);
  --sequence-hub-width: min(100%, 104rem);
  --proof-frame-width-ref: min(100vw, 52rem);
  --proof-frame-height-base: clamp(calc(10.5rem * 1.725), calc(21vw * 1.725), calc(16rem * 1.725));
  --proof-frame-height: max(
    var(--proof-frame-height-base),
    calc(var(--proof-frame-width-ref) * 2752 / 6000 / 0.75)
  );
  --sequence-choice-height: var(--proof-frame-height);
  --sequence-choice-bubble-size: calc(var(--sequence-choice-height) * 0.5);
  --hub-bubble-drift: clamp(2px, 0.55vw, 4.5px);
  --hub-bubble-drift-duration: 5.5s;
  --sequence-panel-height: var(--sequence-choice-height);
  --brand-h: clamp(200px, 24vh, 280px);
  --brand-h-sticky: clamp(116px, 17vh, 152px);
  --brand-brown-ratio: 1;
  --sticky-ui-h: 18rem;
  --site-canvas-max: 1440px;
  --brand-c-active: var(--brand-c-0);
}

@property --brand-c-active {
  syntax: "<color>";
  inherits: true;
  initial-value: #565a62;
}

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

@keyframes brand-stripe-active {
  0%,
  100% {
    --brand-c-active: var(--brand-c-0);
  }

  12.5% {
    --brand-c-active: var(--brand-c-1);
  }

  25% {
    --brand-c-active: var(--brand-c-2);
  }

  37.5% {
    --brand-c-active: var(--brand-c-3);
  }

  50% {
    --brand-c-active: var(--brand-c-4);
  }

  62.5% {
    --brand-c-active: var(--brand-c-5);
  }

  75% {
    --brand-c-active: var(--brand-c-6);
  }

  87.5% {
    --brand-c-active: var(--brand-c-7);
  }
}

html {
  scroll-behavior: smooth;
  --brand-canvas-active: color-mix(
    in srgb,
    color-mix(in srgb, var(--brand-c-active) var(--brand-letter-strength), var(--logo-letter))
      var(--brand-letter-lighten),
    white
  );
  background-color: var(--brand-canvas-active);
  animation: brand-stripe-active var(--brand-stripe-duration) ease-in-out infinite;
}

html,
body {
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  background: transparent;
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.72;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

.safari-chrome-tint {
  display: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.full-bleed {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.full-bleed--viewport {
  position: relative;
  left: 50%;
  right: 50%;
  width: 100vw;
  max-width: 100vw;
  margin-left: -50vw;
  margin-right: -50vw;
}

.full-bleed img:not(.photo-emblem) {
  display: block;
  width: 100%;
  max-width: none;
}

a {
  color: inherit;
  text-decoration: none;
}

#site-header.brand {
  height: auto;
  display: block;
}

.brand {
  width: 100%;
  margin: 0;
  padding: 0;
  flex-shrink: 0;
  overflow: visible;
}

@keyframes brand-stripe-color {
  0%,
  100% {
    background-color: var(--brand-c-0);
  }

  12.5% {
    background-color: var(--brand-c-1);
  }

  25% {
    background-color: var(--brand-c-2);
  }

  37.5% {
    background-color: var(--brand-c-3);
  }

  50% {
    background-color: var(--brand-c-4);
  }

  62.5% {
    background-color: var(--brand-c-5);
  }

  75% {
    background-color: var(--brand-c-6);
  }

  87.5% {
    background-color: var(--brand-c-7);
  }
}

@keyframes brand-stripe-foreground {
  0%,
  100% {
    color: var(--brand-c-0);
  }

  12.5% {
    color: var(--brand-c-1);
  }

  25% {
    color: var(--brand-c-2);
  }

  37.5% {
    color: var(--brand-c-3);
  }

  50% {
    color: var(--brand-c-4);
  }

  62.5% {
    color: var(--brand-c-5);
  }

  75% {
    color: var(--brand-c-6);
  }

  87.5% {
    color: var(--brand-c-7);
  }
}

@keyframes brand-stripe-logo-letter {
  0%,
  100% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-0));
  }

  12.5% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-1));
  }

  25% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-2));
  }

  37.5% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-3));
  }

  50% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-4));
  }

  62.5% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-5));
  }

  75% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-6));
  }

  87.5% {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-7));
  }
}

@keyframes brand-stripe-canvas {
  0%,
  100% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-0) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  12.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-1) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  25% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-2) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  37.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-3) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  50% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-4) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  62.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-5) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  75% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-6) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  87.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-7) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }
}

@keyframes brand-stripe-color-light {
  0%,
  100% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-0) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  12.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-1) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  25% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-2) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  37.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-3) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  50% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-4) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  62.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-5) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  75% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-6) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }

  87.5% {
    background-color: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-7) var(--brand-letter-overlay-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
  }
}

@keyframes hub-bubble-drift {
  0% {
    transform: translate(-50%, -50%) translate(0, 0);
  }

  18% {
    transform: translate(-50%, -50%) translate(var(--hub-bubble-drift), calc(var(--hub-bubble-drift) * -0.55));
  }

  36% {
    transform: translate(-50%, -50%) translate(calc(var(--hub-bubble-drift) * -0.75), var(--hub-bubble-drift));
  }

  54% {
    transform: translate(-50%, -50%) translate(calc(var(--hub-bubble-drift) * 0.45), calc(var(--hub-bubble-drift) * 0.65));
  }

  72% {
    transform: translate(-50%, -50%) translate(calc(var(--hub-bubble-drift) * -0.35), calc(var(--hub-bubble-drift) * -0.5));
  }

  90% {
    transform: translate(-50%, -50%) translate(calc(var(--hub-bubble-drift) * 0.55), calc(var(--hub-bubble-drift) * 0.35));
  }

  100% {
    transform: translate(-50%, -50%) translate(0, 0);
  }
}

.brand .brown {
  width: 100%;
}

#site-header .brown,
.brand--sticky .brown {
  background-color: var(--brand-c-active);
}

#site-header.brand {
  margin: 0;
}

#site-header .brown {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: clamp(1.55rem, 3.85vh, 2.35rem) var(--pad) clamp(1.35rem, 3.5vh, 2.15rem);
}

.brand-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

#site-header .brand-mark {
  --brand-logo-ref-h: min(97.5px, 16.875vh);
  --brand-header-scale: 0.93;
  --brand-lockup-scale: 0.95;
  --brand-lockup-crop-h: 112;
  --brand-wordmark-h: calc(var(--brand-logo-ref-h) * 0.828 * var(--brand-header-scale));
  --brand-lockup-h: calc(var(--brand-wordmark-h) * (433 / 281));
  --brand-lockup-slot-h: calc(var(--brand-lockup-h) * var(--brand-lockup-crop-h) / 106);
  --brand-lockup-render-h: calc(var(--brand-lockup-slot-h) * var(--brand-lockup-scale));
  min-height: var(--brand-lockup-slot-h);
  justify-content: flex-end;
}

#site-header .brand-logo,
.brand--sticky .brand-logo {
  display: block;
  height: var(--brand-lockup-render-h);
  width: auto;
  max-width: none;
  margin: 0;
}

.brand img {
  display: block;
  width: auto;
  max-width: none;
  margin: 0;
}


.brand-baseline {
  display: none;
}

main {
  display: block;
  flex: 1;
  padding-bottom: var(--sticky-ui-h);
}

section {
  padding: clamp(4rem, 10vw, 7rem) var(--pad);
}

.section-title {
  margin: 0;
  font-family: var(--title-serif);
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-align: center;
}

.section-title--small {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}

.section-intro {
  max-width: var(--max);
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
}

/* Hero */

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0 0 clamp(2rem, 4vw, 3rem);
}

#hero {
  margin-top: 0;
  padding-top: 0;
}

.hero-copy {
  width: 100%;
  max-width: 100%;
  padding: var(--section-title-spacing) var(--pad) 0;
  text-align: center;
}

.hero-lead,
#applications-title,
#why-title {
  color: var(--brand-c-active);
  font-weight: 700;
}

#what-title {
  color: #243247;
  font-weight: 700;
}

.hero-lead {
  margin: 0 auto;
  max-width: 100%;
  font-family: var(--title-serif);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1.28;
  letter-spacing: 0.015em;
  text-align: center;
  white-space: normal;
}

@media (min-width: 900px) {
  .hero-lead {
    white-space: nowrap;
  }
}

.hero-visual {
  position: relative;
  overflow: hidden;
  background: var(--line);
  margin-bottom: 0;
}

.hero-visual::after,
.sequence-slide--photo::after,
.proof-visual::after {
  content: none;
}

.photo-emblem {
  position: absolute;
  right: clamp(0.625rem, 1.75vw, 1.125rem);
  bottom: clamp(0.625rem, 1.75vw, 1.125rem);
  z-index: 2;
  display: block;
  width: clamp(1.3875rem, 3.375vw, 2.0625rem);
  aspect-ratio: 1;
  max-width: none;
  height: auto;
  background: no-repeat center / contain url("assets/images/booki-emblem-mark.svg?v=2");
  pointer-events: none;
}

.hero-visual--slideshow {
  width: 100vw;
  max-width: 100vw;
  margin-top: 0;
  margin-bottom: 0;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.hero-slideshow {
  --hero-slideshow-height-scale: 1;
  position: relative;
  width: 100%;
  aspect-ratio: 4128 / calc(2304 * var(--hero-slideshow-height-scale));
  overflow: hidden;
}

.hero-slideshow__viewport {
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: default;
  touch-action: pan-y pinch-zoom;
}

.hero-slideshow.is-hovering .hero-slideshow__viewport,
.hero-slideshow.has-pointer .hero-slideshow__viewport {
  cursor: var(--hero-hand-cursor, grab);
}

.hero-slideshow:not(.is-ready) .hero-slideshow__strip {
  visibility: hidden;
}

.hero-slideshow__strip {
  display: flex;
  flex-wrap: nowrap;
  align-items: flex-end;
  height: 100%;
  will-change: transform;
}

.hero-slideshow__image {
  display: block;
  flex: 0 0 auto;
  height: 100%;
  width: auto;
  max-width: none;
  user-select: none;
  pointer-events: none;
  -webkit-user-drag: none;
}

.hero-slideshow__hover-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0.92;
  color: #ffffff;
  filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.28));
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.hero-slideshow.is-hovering .hero-slideshow__hover-hint,
.hero-slideshow.has-pointer .hero-slideshow__hover-hint {
  opacity: 0;
  visibility: hidden;
}

.hero-slideshow__hover-hint-hand {
  display: block;
  width: clamp(2rem, 4.5vw, 2.75rem);
  height: clamp(2rem, 4.5vw, 2.75rem);
}

.hero-slideshow__viewport .photo-emblem {
  z-index: 2;
}

@media (max-width: 767px) {
  .hero-slideshow {
    --hero-slideshow-height-scale: 1.725;
  }
}

.site-shell {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  background: transparent;
}

.transformation {
  background: transparent;
  padding: clamp(2rem, 6vw, 4rem) 0 var(--transformation-pad-bottom);
}

.sequence-hub {
  width: 100%;
}

.sequence-hub__overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--sequence-frame-gap);
  width: var(--sequence-hub-width);
  margin: 0 auto;
  padding: 0 clamp(0.75rem, 2.5vw, 1.5rem);
  box-sizing: border-box;
}

.sequence-hub__or {
  font-family: var(--title-serif);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.015em;
  text-transform: lowercase;
  color: var(--brand-c-active);
  align-self: center;
  padding-inline: 0.1rem;
}

.sequence-hub__choice {
  display: block;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  text-align: inherit;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

.sequence-hub__choice-media {
  position: relative;
  display: block;
  width: 100%;
  height: var(--sequence-choice-height);
  overflow: hidden;
  background: var(--line);
  border-radius: var(--sequence-frame-radius);
}

.sequence-hub__choice-photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: opacity 0.5s ease;
}

.sequence-hub__choice-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--sequence-choice-bubble-size);
  height: var(--sequence-choice-bubble-size);
  margin: 0;
  padding: clamp(0.25rem, 0.9vw, 0.45rem);
  box-sizing: border-box;
  background-color: var(--brand-c-active);
  border-radius: 50%;
  opacity: 1;
  pointer-events: none;
  transform: translate(-50%, -50%);
  animation: hub-bubble-drift var(--hub-bubble-drift-duration) ease-in-out infinite;
}

.sequence-hub__choice[data-sequence-panel="read"] .sequence-hub__choice-overlay {
  animation-delay: calc(var(--hub-bubble-drift-duration) * -0.5);
}

.sequence-hub__choice[data-sequence-panel="read"] .sequence-hub__choice-content {
  transform: translateY(calc(var(--sequence-choice-bubble-size) * -0.03));
}

.sequence-hub__choice-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(0.2rem, 0.55vw, 0.4rem);
  width: 100%;
  max-height: 100%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  pointer-events: none;
  color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-active));
  transform: translateY(calc(var(--sequence-choice-bubble-size) * -0.08));
}

.sequence-hub__choice-illustration {
  display: block;
  flex: 0 0 auto;
  width: calc(var(--sequence-choice-bubble-size) * 0.63);
  height: calc(var(--sequence-choice-bubble-size) * 0.63);
  margin: 0;
  overflow: visible;
  background-color: currentColor;
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  mask-mode: alpha;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
}

.sequence-hub__choice-illustration--screen {
  mask-image: url("assets/images/booki-folding-browse-screen.svg?v=1");
  -webkit-mask-image: url("assets/images/booki-folding-browse-screen.svg?v=1");
  transform: translateY(calc(var(--sequence-choice-bubble-size) * 0.05));
}

.sequence-hub__choice-illustration--book {
  mask-image: url("assets/images/booki-folding-browse-book.svg?v=2");
  -webkit-mask-image: url("assets/images/booki-folding-browse-book.svg?v=2");
  transform: translateY(calc(var(--sequence-choice-bubble-size) * 0.06));
}

.sequence-hub__choice-label.sequence-slide__label {
  position: static;
  flex: 0 0 auto;
  margin: 0;
  width: auto;
  max-width: 100%;
  transform: translateY(calc(var(--sequence-choice-bubble-size) * -0.05));
  color: inherit;
  animation: none;
  line-height: 1;
  font-size: clamp(1.24rem, 2.9vw, 1.8rem);
}

.sequence-hub__choice-label.sequence-slide__label--long {
  line-height: 1.05;
  font-size: clamp(1.16rem, 2.7vw, 1.7rem);
  max-width: 100%;
}

.sequence-hub__choice-label .sequence-slide__label-sub {
  color: inherit;
}

.sequence-hub__overview[hidden] {
  display: none !important;
}

.sequence-hub__choice:focus-visible {
  outline: 2px solid var(--brand-c-active);
  outline-offset: 3px;
}

.sequence-panel[hidden] {
  display: none !important;
}

@media (max-width: 720px) {
  .sequence-hub__overview {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    width: min(100%, calc((var(--sequence-choice-height) * (1417 / 850) + 2rem) * 2));
  }

  .sequence-hub__or {
    justify-self: center;
  }
}

.sequence-slider {
  --sequence-height: var(--sequence-panel-height);
  --sequence-speed: 24s;
  --sequence-video-crop: 1.32;
  --sequence-slider-gutter: calc(var(--sequence-frame-gap) * 7);
  --swipe-hand-cursor: grab;
  position: relative;
  width: 100%;
  overflow: hidden;
}

.sequence-slider--interactive .sequence-slider__viewport {
  cursor: default;
  touch-action: pan-y pinch-zoom;
}

.sequence-slider--interactive.has-pointer .sequence-slider__viewport,
.sequence-slider--interactive.is-interacting .sequence-slider__viewport,
.sequence-slider--interactive.is-dragging .sequence-slider__viewport {
  cursor: var(--swipe-hand-cursor);
  touch-action: pan-y pinch-zoom;
}

.sequence-slider--interactive.is-dragging .sequence-slider__viewport {
  touch-action: none;
}

.sequence-slider__viewport {
  width: 100%;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  padding-inline-start: var(--sequence-slider-gutter);
  padding-inline-end: 0;
  box-sizing: border-box;
}

.sequence-slider__swipe-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0.92;
  color: #ffffff;
  filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.28));
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.sequence-slider__swipe-hint-hand {
  display: block;
  width: clamp(2rem, 4.5vw, 2.75rem);
  height: clamp(2rem, 4.5vw, 2.75rem);
}

.sequence-slider.is-swipe-hint-hidden .sequence-slider__swipe-hint,
.sequence-slider.is-interacting .sequence-slider__swipe-hint,
.sequence-slider.is-dragging .sequence-slider__swipe-hint,
.sequence-slider.has-pointer .sequence-slider__swipe-hint {
  opacity: 0;
  visibility: hidden;
}

.sequence-slider__swipe-hint-row {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 2.4vw, 1rem);
}

.sequence-slider__swipe-hint-arrow,
.sequence-slider__swipe-hint-hand {
  display: block;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  color: inherit;
}

.sequence-slider__swipe-hint-text {
  font-family: var(--sans);
  font-size: clamp(0.8125rem, 1.9vw, 0.9375rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: inherit;
}

.sequence-slider__track {
  display: flex;
  width: max-content;
  will-change: transform;
}

.sequence-slider__set {
  display: flex;
  flex: 0 0 auto;
  gap: var(--sequence-frame-gap);
  padding-inline-end: var(--sequence-slider-gutter);
}

.sequence-slide--photo {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: auto;
  height: var(--sequence-height);
  margin: 0;
  overflow: hidden;
  background: var(--line);
  border-radius: var(--sequence-frame-radius);
}

.sequence-slide__media {
  position: relative;
  display: block;
  height: var(--sequence-height);
  line-height: 0;
  border-radius: inherit;
  overflow: hidden;
}

.sequence-slide__media > img {
  display: block;
  height: var(--sequence-height);
  width: auto;
  max-height: var(--sequence-height);
  max-width: none;
  object-fit: contain;
  object-position: center center;
}

.sequence-slide__overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  padding: clamp(0.85rem, 2vw, 1.35rem);
  background-color: color-mix(
    in srgb,
    color-mix(
        in srgb,
        var(--brand-c-active) var(--brand-letter-overlay-strength),
        var(--logo-letter)
      )
      var(--brand-letter-lighten),
    white
  );
  box-sizing: border-box;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.sequence-slide__overlay.is-visible {
  opacity: 1;
}

.sequence-slide__illustration {
  position: absolute;
  left: 50%;
  top: 44%;
  display: block;
  inline-size: min(100%, calc((471 / 309) * (var(--sequence-height) - clamp(3rem, 8vw, 4.75rem)) * 0.5));
  block-size: auto;
  aspect-ratio: 471 / 309;
  margin: 0;
  background-color: var(--brand-c-active);
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  mask-mode: alpha;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  transform: translate(-50%, -50%);
}

.sequence-slide__illustration--open {
  mask-image: url("assets/images/booki-folding-open.svg?v=5");
  -webkit-mask-image: url("assets/images/booki-folding-open.svg?v=5");
}

.sequence-slide__illustration--stand {
  mask-image: url("assets/images/booki-folding-stand.svg?v=5");
  -webkit-mask-image: url("assets/images/booki-folding-stand.svg?v=5");
}

.sequence-slide__illustration--browse,
.sequence-slide__illustration--hold,
.sequence-slide__illustration--browse-book {
  inline-size: min(100%, calc((var(--sequence-height) - clamp(3rem, 8vw, 4.75rem)) * 0.5));
  aspect-ratio: 1;
}

.sequence-slide__illustration--browse {
  mask-image: url("assets/images/booki-folding-browse-screen.svg?v=1");
  -webkit-mask-image: url("assets/images/booki-folding-browse-screen.svg?v=1");
}

.sequence-slide__illustration--hold {
  mask-image: url("assets/images/booki-folding-hold.svg?v=1");
  -webkit-mask-image: url("assets/images/booki-folding-hold.svg?v=1");
}

.sequence-slide__illustration--browse-book {
  mask-image: url("assets/images/booki-folding-browse-book.svg?v=2");
  -webkit-mask-image: url("assets/images/booki-folding-browse-book.svg?v=2");
}

.sequence-slide__illustration--offset {
  transform: translate(-50%, -50%);
}

.sequence-slide__label {
  position: absolute;
  top: auto;
  bottom: 33%;
  left: 50%;
  z-index: 1;
  margin: 0;
  width: max-content;
  max-width: calc(100% - 2rem);
  font-family: var(--sans);
  font-size: clamp(2rem, 5.1vw, 3.5rem);
  font-weight: 700;
  font-style: normal;
  line-height: 1;
  letter-spacing: 0;
  text-align: center;
  color: var(--brand-c-active);
  transform: translate(-50%, 50%);
}

.sequence-slide__label--long {
  max-width: min(calc(100% - 2rem), 21rem);
  font-size: clamp(1.65rem, 4.2vw, 3rem);
  line-height: 1.12;
}

.sequence-slide__label-sub {
  display: block;
  font-size: 0.6em;
  line-height: 1.1;
}

.sequence-slide--video {
  position: relative;
  flex: 0 0 auto;
  width: calc(var(--sequence-height) * var(--sequence-video-crop));
  height: var(--sequence-height);
  margin-inline: 0;
  overflow: hidden;
  background: var(--line);
  line-height: 0;
  border-radius: var(--sequence-frame-radius);
}

.sequence-video__frame {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: inherit;
}

.sequence-slide--video iframe {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 108%;
  width: calc(var(--sequence-height) * 16 / 9 * 1.08);
  border: 0;
  margin: 0;
  padding: 0;
  opacity: 1;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.sequence-slider.is-static .sequence-slide__overlay.is-visible {
  opacity: 1;
}

.sequence-slider.is-static .sequence-slider__viewport {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  cursor: var(--swipe-hand-cursor);
  touch-action: pan-x pan-y;
}

.sequence-slider.is-static .sequence-slider__set[aria-hidden="true"] {
  display: none;
}

/* What is BOOKi */

.what {
  display: block;
  position: relative;
  z-index: 0;
  max-width: none;
  margin: 0;
  padding: var(--section-title-spacing) 0 0;
  background: transparent;
}

.what::before {
  content: "";
  position: absolute;
  left: 50%;
  z-index: -1;
  width: 100vw;
  transform: translateX(-50%);
  top: calc((var(--section-title-spacing) - var(--transformation-pad-bottom)) / 2);
  bottom: calc(var(--applications-whitespace-above) / -2);
  background: var(--white);
}

.what > * {
  position: relative;
  z-index: 1;
}

.what-inner {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding-inline: var(--pad);
  text-align: center;
  box-sizing: border-box;
}

.what-text,
.what-production {
  margin: 1.25rem auto 0;
  width: 100%;
  max-width: none;
  font-size: clamp(1rem, 1.45vw, 1.125rem);
  line-height: 1.82;
  letter-spacing: 0.012em;
  text-wrap: pretty;
}

.what-production {
  color: var(--muted);
}

.proof {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-top: clamp(1.25rem, 2.5vw, 2rem);
  padding-inline: clamp(0.75rem, 2.5vw, 1.5rem);
}

.proof-frame {
  width: var(--sequence-visual-width);
  height: var(--proof-frame-height);
  margin: 0 auto;
  border-radius: var(--sequence-frame-radius);
  overflow: hidden;
  display: grid;
  grid-template-rows: 3fr 1fr;
  background: var(--line);
}

.proof-inni {
  min-height: 0;
  margin: 0;
  padding: 0;
  line-height: 0;
  overflow: hidden;
}

.proof-inni img:not(.photo-emblem) {
  display: block;
  width: 118%;
  height: 100%;
  max-width: none;
  margin-left: -9%;
  object-fit: cover;
  object-position: center center;
}

.proof + .what-inner {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  padding-bottom: clamp(0.5rem, 1.5vw, 1rem);
}

.proof + .what-inner .what-production {
  margin-top: 0;
}

.proof-visual {
  position: relative;
  min-height: 0;
  margin: 0;
  overflow: hidden;
  aspect-ratio: auto;
}

.proof-slideshow {
  position: absolute;
  inset: 0;
  height: 100%;
  overflow: hidden;
}

.proof-slide {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 1000ms cubic-bezier(0.22, 1, 0.36, 1);
}

.proof-slide.is-active {
  z-index: 2;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity 1000ms cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s;
}

.proof-slide.is-leaving {
  z-index: 1;
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  transition:
    opacity 1000ms cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s 1000ms;
}

.proof-slide img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% 35%;
}

/* Applications */

.applications {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--section-title-spacing) var(--pad) clamp(0.75rem, 2vw, 1.25rem);
  text-align: center;
}

.applications-grid {
  display: grid;
  gap: var(--feature-grid-gap);
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 768px) {
  .applications-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--feature-grid-gap) 1.25rem;
  }
}

.applications-grid li {
  display: flex;
  flex-direction: column;
  gap: var(--term-detail-gap);
  padding: 0;
}

@media (max-width: 767px) {
  .applications-grid li,
  .why-grid li {
    gap: 0.15rem;
  }

  .why {
    padding-top: clamp(2.25rem, 7vw, 3rem);
  }
}

.application-name {
  display: block;
  font-family: var(--title-serif);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.application-detail {
  display: block;
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

/* Why BOOKi */

.why {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(1.5rem, 3.5vw, 2.25rem) var(--pad) clamp(4rem, 10vw, 7rem);
  background: transparent;
  text-align: center;
}

.why-grid {
  display: grid;
  gap: var(--feature-grid-gap);
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--feature-grid-gap) 1.25rem;
  }
}

.why-grid li {
  display: flex;
  flex-direction: column;
  gap: var(--term-detail-gap);
  padding: 0;
}

.why-term {
  display: block;
  font-family: var(--title-serif);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.why-detail {
  display: block;
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

@media (min-width: 768px) {
  .application-detail,
  .why-detail {
    margin-inline: auto;
    max-width: 11.75rem;
  }
}

/* Sticky footer */

.sticky-ui {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin: 0;
  padding: 0;
  padding-bottom: env(safe-area-inset-bottom, 0);
  background: transparent;
  transform: translateY(100%);
  transition: transform 450ms var(--ease);
  pointer-events: none;
}

.sticky-ui.is-visible {
  transform: translateY(0);
  pointer-events: auto;
}

.info-btn.is-positioned {
  top: var(--info-btn-y);
  transform: translate(-50%, -50%);
}

.info-btn.is-visible.is-positioned {
  --hub-bubble-drift: clamp(4px, 1.15vw, 10px);
  --hub-bubble-drift-duration: 11s;
  animation: hub-bubble-drift var(--hub-bubble-drift-duration) ease-in-out infinite;
}

.info-btn {
  position: fixed;
  left: 50%;
  z-index: 101;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-width: 13.05rem;
  padding: 0.76rem 4.23rem;
  overflow: hidden;
  font-family: var(--sans);
  font-size: 1.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: lowercase;
  color: var(--white);
  background-color: var(--brand-c-active);
  border: 1px solid transparent;
  border-radius: 7px;
  box-shadow: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 300ms var(--ease),
    visibility 0s 300ms,
    filter 200ms var(--ease);
}

.info-btn__label {
  display: inline-block;
  line-height: 1;
  transform: translateY(-0.07em);
}

.info-btn.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity 300ms var(--ease),
    visibility 0s,
    filter 200ms var(--ease);
}

.info-btn.is-visible:hover,
.info-btn.is-visible:focus-visible {
  filter: brightness(0.88);
}

.brand.brand--sticky {
  width: 100%;
  height: auto;
  display: block;
  grid-template-rows: none;
  overflow: visible;
  margin: 0;
  padding: 0;
}

.brand--sticky .brand-inner {
  width: 100%;
  min-height: var(--brand-h-sticky);
  height: auto;
  margin: 0;
  padding: 0;
}

.brand--sticky .brown {
  min-height: 100%;
  height: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: clamp(1.05rem, 2.35vh, 1.5rem) var(--pad) clamp(0.95rem, 2.4vh, 1.4rem);
}

.brand--sticky .brand-mark {
  --brand-lockup-scale: 0.95;
  --brand-lockup-crop-h: 112;
  --brand-wordmark-h: min(47.5px, 7.6vh);
  --brand-lockup-h: calc(var(--brand-wordmark-h) * (433 / 281));
  --brand-lockup-slot-h: calc(var(--brand-lockup-h) * var(--brand-lockup-crop-h) / 106);
  --brand-lockup-render-h: calc(var(--brand-lockup-slot-h) * var(--brand-lockup-scale));
}

.brand--sticky .brand-logo {
  margin-top: calc(var(--brand-lockup-slot-h) * (1 - var(--brand-lockup-scale)));
}

@media (max-width: 767px) {
  #site-header .brand-mark {
    --brand-lockup-scale: calc(0.95 * 0.8);
    --brand-lockup-render-h: calc(var(--brand-lockup-slot-h) * var(--brand-lockup-scale));
  }

  .brand--sticky .brand-mark {
    --brand-lockup-scale: calc(0.95 * 0.9);
    --brand-lockup-render-h: calc(var(--brand-lockup-slot-h) * var(--brand-lockup-scale));
  }
}

.brand-legal {
  margin: clamp(0.55rem, 1.2vh, 0.85rem) 0 0;
  max-width: 28rem;
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(0.75rem, 1.3vw, 0.875rem);
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: #ffffff;
}

@media (max-width: 640px) {
  #site-header .brand-mark {
    --brand-logo-ref-h: min(88px, 15.75vh);
  }

  .brand--sticky .brand-mark {
    --brand-wordmark-h: min(42px, 6.8vh);
  }
}

@media (max-height: 560px) {
  :root {
    --brand-h: clamp(188px, 22vh, 248px);
    --brand-h-sticky: clamp(80px, 12vh, 104px);
  }
}

/* Large desktop canvas (19" and up) */

@media (min-width: 1280px) {
  .full-bleed:not(.full-bleed--viewport) {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .sequence-slider {
    --sequence-speed: 28s;
  }
}

@media (max-width: 767px) {
  .safari-chrome-tint {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 6px;
    z-index: 1;
    pointer-events: none;
    background-color: #ffffff;
  }

  #site-header {
    position: relative;
    z-index: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
    animation: none;
    --brand-c-active: var(--brown);
    --brand-canvas-active: color-mix(
      in srgb,
      color-mix(in srgb, var(--brand-c-active) var(--brand-letter-strength), var(--logo-letter))
        var(--brand-letter-lighten),
      white
    );
    background-color: var(--brand-canvas-active);
  }

  #site-header .brown,
  .brand--sticky .brown,
  .info-btn,
  .sequence-hub__choice-overlay,
  .sequence-slide__illustration {
    background-color: var(--brand-c-active);
  }

  .sequence-slider__swipe-hint,
  .sequence-hub__or,
  .sequence-slide__label,
  .hero-lead,
  #applications-title,
  #why-title {
    color: var(--brand-c-active);
  }

  .info-btn.is-visible.is-positioned {
    animation: none;
    transform: translate(-50%, -50%);
  }

  .info-btn.is-visible.is-positioned .info-btn__label {
    animation: none;
    transform: translateY(-0.07em);
    font-weight: 400;
  }

  .sequence-slide__overlay {
    background-color: color-mix(
      in srgb,
      color-mix(
          in srgb,
          var(--brand-c-active) var(--brand-letter-overlay-strength),
          var(--logo-letter)
        )
        var(--brand-letter-lighten),
      white
    );
  }

  .sequence-hub__choice-content {
    color: color-mix(in srgb, white var(--logo-letter-tint), var(--brand-c-active));
  }

  .sequence-hub__choice-illustration {
    background-color: currentColor;
  }

  .sequence-hub__choice-overlay {
    animation: none;
    transform: translate(-50%, -50%);
  }

  #what-title {
    color: #243247;
  }

  .hero-slideshow__strip {
    transition: none;
  }

  .sequence-slider.is-active .sequence-slider__track {
    animation: none;
  }
}