.chapter_stack, .chapter_flow, .chapter_make { position: relative; z-index: 8; isolation: isolate; letter-spacing: 0; }

.chapter_stack {
  background: var(--color_black);
  color: var(--color_paper);
}

.chapter_flow,
.chapter_make {
  background: var(--color_chapter_field);
  color: var(--color_black);
}

.chapter_flow { --color_chapter_field: var(--color_flow_field); margin-top: -100svh; z-index: 9; }
.chapter_flow > .chapter_heading {
  min-height: 88svh;
  background:
    radial-gradient(circle at 78% 18%, var(--color_brand_ice_glow), transparent 38%),
    linear-gradient(
      135deg,
      var(--color_hero_cream),
      var(--color_flow_field) 58%,
      color-mix(in srgb, var(--color_code) 24%, var(--color_hero_cream))
    );
}

.chapter_heading {
  min-height: 88svh;
  padding: clamp(76px, 12vw, 172px) var(--space_page);
  display: grid;
  grid-template-columns: minmax(100px, 0.22fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(24px, 6vw, 96px);
  border-bottom: 1px solid currentColor;
}

.chapter_heading_light {
  background: var(--color_chapter_field);
}

.chapter_make > .chapter_heading {
  background:
    radial-gradient(circle at 78% 18%, var(--color_hero_pink), transparent 38%),
    linear-gradient(135deg, var(--color_hero_cream), var(--color_make_field) 58%, var(--color_hero_pink));
}

.chapter_number {
  color: var(--color_acid);
  font-family: var(--font_display);
  font-size: clamp(72px, 10vw, 140px);
  font-weight: 800;
  line-height: 0.85;
}

.chapter_heading_light .chapter_number { color: var(--color_pool); }
.chapter_flow > .chapter_heading .chapter_number { color: var(--color_code); }
.chapter_make > .chapter_heading .chapter_number { color: var(--color_make); }
.chapter_make > .chapter_heading .section_kicker { color: var(--color_code); }

.chapter_heading h2 {
  max-width: 100%;
  margin: 12px 0 0;
  font-family: var(--font_display);
  font-size: clamp(54px, 9vw, 126px);
  font-weight: 900;
  line-height: 0.9;
  overflow-wrap: break-word;
  text-wrap: balance;
}

.chapter_heading .section_kicker {
  position: relative;
  z-index: 1;
  margin-bottom: 12px;
}

.type_fracture_stage {
  position: relative;
  z-index: 2;
  height: 280svh;
  background: transparent;
}

.type_fracture_sticky {
  position: sticky; top: 0; height: 100svh; overflow: hidden; display: grid; place-items: center;
  opacity: var(--fracture_surface_opacity, 1);
  will-change: opacity;
}

.fracture_eyebrow,
.fracture_caption {
  position: absolute;
  z-index: 2;
  margin: 0;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.fracture_eyebrow {
  top: 12vh;
}

.fracture_caption {
  bottom: 9vh;
  left: var(--space_page);
  max-width: 28rem;
  text-transform: none;
}

.fracture_words {
  position: relative;
  z-index: 2;
  width: min(94vw, 1560px);
  height: 72svh;
}

.fracture_word {
  position: absolute; left: 50%; top: 50%; color: var(--color_paper);
  font: 800 clamp(5rem, 16vw, 16rem) / 0.74 var(--font_display);
  white-space: nowrap; opacity: 1;
  transform: translate(-50%, -50%) translate3d(var(--fracture_x, 0px), var(--fracture_y, 0px), 0)
    rotate(var(--fracture_rotate, 0deg)) scale(var(--fracture_scale, 1));
  will-change: transform;
}

.fracture_word:nth-child(2) { color: var(--color_water); }
.fracture_word:nth-child(3) { color: var(--color_acid); }
.fracture_word:nth-child(4) { color: var(--color_pink); }

.discipline_stage {
  position: relative;
  z-index: 1;
  height: 440svh;
  margin-top: -100svh;
  background: transparent;
}

.discipline_sticky {
  position: sticky; top: 0; height: 100svh; padding: 96px var(--space_page) 32px; overflow: hidden;
  background: var(--color_chapter_dark);
  opacity: var(--discipline_reveal, 0);
  will-change: opacity;
}

.discipline_label,
.paper_fan_label {
  margin: 0 0 28px;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.discipline_list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border_chapter_light);
}

.discipline_item {
  min-height: calc((100svh - 156px) / 4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--border_chapter_light);
  opacity: var(--discipline_opacity, 0.34);
  transform: translate3d(var(--discipline_x, 0px), 0, 0) scale(var(--discipline_scale, 1));
  will-change: transform, opacity;
}

.discipline_item span {
  font: 700 clamp(2.4rem, 7vw, 7rem) / 0.9 var(--font_display);
}

.discipline_item small { font-size: 0.78rem; text-transform: uppercase; }

.paper_fan_stage {
  height: 1000svh;
  background: var(--color_paper);
  color: var(--color_black);
}

.paper_fan_sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
}

.paper_fan_label {
  position: absolute;
  top: 48px;
  left: var(--space_page);
  z-index: 3;
}

.paper_helix_canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  filter: var(--filter_flow_capture);
}

.paper_fan_title {
  position: absolute;
  inset: 0;
  z-index: 0;
  color: var(--color_black);
  opacity: var(--paper_title_opacity, 1);
  filter: blur(var(--paper_title_blur, 0px));
  will-change: transform, opacity, filter;
  pointer-events: none;
  will-change: opacity;
}

.paper_fan_title span {
  position: absolute;
  font: 500 clamp(5.5rem, 10.5vw, 10.5rem) / 0.78 var(--font_display);
  white-space: nowrap;
}

.paper_fan_title span:first-child {
  top: 33%;
  left: -2.5vw;
  transform: translate3d(var(--paper_design_x, 0vw), -50%, 0);
}

.paper_fan_title span:last-child {
  top: 58%;
  right: -2.5vw;
  transform: translate3d(var(--paper_motion_x, 0vw), -50%, 0);
}

.paper_fan_subtitle {
  position: absolute;
  top: 48%;
  left: 50%;
  max-width: 19rem;
  margin: 0;
  font-size: clamp(0.72rem, 1.15vw, 1rem);
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -50%);
}

.paper_fan_orbits {
  display: none;
}

.paper_fan_orbits::before,
.paper_fan_orbits::after {
  position: absolute;
  content: "";
  width: 124vw;
  height: 68vh;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.18;
}

.paper_fan_orbits::before {
  left: -19vw;
  top: 8vh;
  transform: rotate(18deg);
}

.paper_fan_orbits::after {
  right: -35vw;
  bottom: -28vh;
  transform: rotate(-27deg);
}

.paper_fan {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: none;
  perspective: 1800px;
  perspective-origin: 50% 50%;
  transform-style: preserve-3d;
}

.work_paper {
  position: absolute;
  left: 50%;
  top: 50%;
  width: clamp(280px, 27vw, 560px);
  aspect-ratio: 1.5;
  padding: 0;
  overflow: visible;
  border-radius: 6px;
  background: transparent;
  box-shadow: var(--shadow_chapter_paper);
  opacity: var(--paper_opacity, 1);
  transform: translate(-50%, -50%) translate3d(var(--paper_x, 0px), var(--paper_y, 0px), var(--paper_z, 0px))
    rotateX(var(--paper_rx, 0deg)) rotateY(var(--paper_ry, 0deg)) rotateZ(var(--paper_rz, 0deg)) scale(var(--paper_scale, 1));
  will-change: transform, opacity;
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

.work_paper img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: var(--filter_flow_capture);
}

.paper_fan_caption {
  position: absolute;
  left: var(--space_page);
  bottom: 32px;
  z-index: 3;
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.15;
}

.paper_fan_link {
  position: absolute;
  right: var(--space_page);
  bottom: 32px;
  z-index: 3;
  min-width: 180px;
  padding-bottom: 8px;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid currentColor;
  color: inherit;
  font-size: 0.78rem;
  text-decoration: none;
  text-transform: uppercase;
}

.paper_fan_stripes {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  pointer-events: none;
}

.paper_fan_stripe {
  flex: 1;
  width: 100%;
  margin-top: -1px;
  background: var(--color_chapter_dark);
  transform: scaleY(var(--paper_stripe_scale, 0));
  transform-origin: bottom;
  will-change: transform;
}

.project_index {
  min-height: 120svh; padding: 12vh var(--space_page); display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(28px, 6vw, 96px) 24px; background: var(--color_chapter_field);
}

.project_sheet {
  --project_accent: var(--color_code);
  position: relative;
  grid-column: span 4;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  --sheet_offset: 0vh;
  --sheet_lift: 0px;
  transform: translateY(calc(var(--sheet_offset) + var(--sheet_lift)));
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.project_sheet:nth-child(3n + 2) { --project_accent: var(--color_design); }
.project_sheet:nth-child(3n) { --project_accent: var(--color_make); }
.project_sheet::before {
/*   position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1;
  height: 4px;
  background: var(--project_accent);
  content: ""; */
}

.project_sheet:nth-child(4n + 2) { --sheet_offset: 14vh; }
.project_sheet:nth-child(4n + 4) { grid-column: 8 / span 4; }
.project_sheet img { width: 100%; aspect-ratio: 1.42; display: block; object-fit: cover; border: 1px solid var(--border_chapter_media); }
.project_sheet_meta,
.project_sheet_action { display: block; margin-top: 12px; font-size: 0.72rem; text-transform: uppercase; }
.project_sheet strong { display: block; margin-top: 5px; font: 700 clamp(2rem, 4vw, 4.5rem) / 0.92 var(--font_display); }
.brand_story_title { margin: var(--space_2) 0 0; font: 700 clamp(2rem, 4vw, 4.5rem) / 1.05 var(--font_korean); word-break: keep-all; }
.brand_story_copy { margin: var(--space_4) 0 0; color: var(--color_mist); font-size: 16px; line-height: 1.55; word-break: keep-all; }
article.project_sheet { margin-bottom: var(--sheet_offset); }
article.project_sheet img { object-fit: contain; background: var(--color_paper); }
.chapter_summary { max-width: 42ch; margin: var(--space_8) 0 var(--space_4); font-size: 16px; line-height: 1.55; color: var(--color_mist); word-break: keep-all; }
.chapter_method_link { display: inline-block; padding-block: var(--space_3); font-size: 16px; text-decoration: underline; text-underline-offset: var(--space_1); }
article.project_sheet:hover { --sheet_lift: 0px; }
article.project_sheet:hover img { transform: none; filter: none; }
.project_sheet_action { width: fit-content; padding-bottom: 3px; border-bottom: 1px solid currentColor; }
.project_sheet.is_disabled { opacity: 0.58; }
.project_sheet img { transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1), filter 320ms ease; }
.project_sheet_action { opacity: 0.56; transform: translateY(4px); transition: opacity 240ms ease, transform 240ms ease; }
.project_sheet:is(:hover, :focus-visible) { --sheet_lift: -12px; }
.work_detail_panel:is(:hover, :focus-visible) { --detail_hover_y: -8px; }
.project_sheet:is(:hover, :focus-visible) img { transform: scale(1.012); filter: contrast(1.04); }
.project_sheet:is(:hover, :focus-visible) .project_sheet_action { opacity: 1; transform: translateY(0); }

.work_detail_stage {
  height: 700svh;
  background: var(--color_make_field);
  color: var(--color_black);
}

.work_detail_sticky { position: sticky; top: 0; height: 100svh; overflow: hidden; isolation: isolate; }

.work_detail_media {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 1;
  width: var(--detail_media_width, 33.7vw);
  height: var(--detail_media_height, 62.2svh);
  overflow: hidden;
  background: var(--color_black);
  border-radius: var(--detail_media_radius, 999px);
  contain: layout paint;
  transform: translate3d(-50%, -50%, 0);
  will-change: width, height;
}

.work_detail_video { width: 100%; height: 100%; display: block; object-fit: cover; }

.work_detail_titles {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--color_work_overlay);
  mix-blend-mode: difference;
  opacity: var(--detail_title_opacity, 1);
  transform: translate3d(0, var(--detail_title_y, 0vh), 0);
  will-change: transform;
  pointer-events: none;
}

.work_detail_title_track {
  width: max-content;
  display: flex;
  align-items: center;
  gap: clamp(36px, 5vw, 72px);
  white-space: nowrap;
  transform: translate3d(var(--detail_title_x, -100vw), 0, 0);
  will-change: transform;
}

.work_detail_title_track span { font: 500 clamp(6rem, 11.8vw, 11.8rem) / 0.82 var(--font_body); }

.work_detail_intro {
  position: absolute;
  inset: 0;
  z-index: 4;
  color: var(--color_work_overlay);
  mix-blend-mode: difference;
  pointer-events: none;
  opacity: var(--detail_intro_opacity, 0);
}

.work_detail_statement {
  position: absolute;
  left: 32px;
  top: 13.3svh;
  max-width: 12rem;
  margin: 0;
  font: 600 0.85rem / 1.4 var(--font_body);
  text-transform: uppercase;
}

.work_detail_link {
  position: absolute;
  right: 32px;
  top: 15.3svh;
  width: 10rem;
  padding-bottom: var(--space_2);
  display: flex;
  justify-content: space-between;
  color: inherit;
  border-bottom: 1px solid currentColor;
  font: 600 0.7rem / 1 var(--font_mono);
  text-decoration: none;
  text-transform: uppercase;
  pointer-events: auto;
}

.work_detail_viewport {
  position: absolute;
  inset: auto 0 9svh;
  z-index: 5;
  min-width: 0;
  overflow: hidden;
  opacity: var(--detail_archive_opacity, 0);
  will-change: opacity;
}

.work_detail_rail_caption {
  margin: 0 0 80px;
  color: var(--color_work_overlay);
  font-size: 0.72rem;
  text-align: center;
  text-transform: uppercase;
  mix-blend-mode: difference;
}

.work_detail_track {
  width: max-content;
  display: flex;
  align-items: flex-end;
  gap: 19.2px;
  padding: 0;
  transform: translate3d(var(--detail_x, 0px), 0, 0);
  will-change: transform;
}

.work_detail_card {
  --work_accent: var(--color_code);
  position: relative;
  flex: 0 0 clamp(320px, 33.5vw, 536px);
  height: 27.3svh;
  min-height: 220px;
  padding: var(--space_8);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34%;
  grid-template-rows: auto 1fr auto auto;
  grid-template-areas:
    "label media"
    "title media"
    "copy media"
    "action media";
  column-gap: var(--space_6);
  color: var(--color_black);
  text-decoration: none;
  background: var(--color_work_glass);
  border: 1px solid var(--color_work_border);
  border-radius: var(--space_2);
  transition: color 500ms ease-in-out, background-color 500ms ease-in-out;
}

.work_detail_card:nth-child(3n + 2) { --work_accent: var(--color_design); }
.work_detail_card:nth-child(3n) { --work_accent: var(--color_make); }
.work_detail_card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--work_accent);
  content: "";
}

.work_detail_card:is(:hover, :focus-visible) { color: var(--color_paper); background: var(--color_work_active); }
.work_detail_card_thumb { grid-area: media; width: 100%; height: 100%; display: block; object-fit: contain; outline: none; }
.work_detail_card_number { grid-area: label; }
.work_detail_card strong { grid-area: title; align-self: end; font: 700 clamp(1.3rem, 2vw, 2rem) / 0.95 var(--font_display); }
.work_detail_card_copy { grid-area: copy; max-width: 13rem; text-transform: none; }
.work_detail_card_action { grid-area: action; align-self: end; display: flex; justify-content: space-between; gap: var(--space_4); padding-top: var(--space_3); border-top: 1px solid currentColor; }
.work_detail_card_number,
.work_detail_card_copy,
.work_detail_card_action { display: block; font-size: 0.72rem; text-transform: uppercase; }
.work_detail_card_action { display: flex; }
.work_detail_card.is_disabled { opacity: 0.72; }

.project_sheet:focus-visible,
.work_detail_panel:focus-visible { outline: 3px solid var(--color_acid); outline-offset: 6px; }

@media (max-width: 767px) {
  .chapter_flow { margin-top: 0; }
  .chapter_flow > .chapter_heading { min-height: auto; }
  .chapter_heading { min-height: auto; padding: 120px 16px 80px; grid-template-columns: 1fr; gap: 32px; }
  .chapter_number { font-size: clamp(72px, 20vw, 96px); }
  .chapter_heading h2 { font-size: clamp(34px, 10.8vw, 56px); }
  .chapter_heading .section_kicker { margin-bottom: 12px; }
  .discipline_stage,
  .paper_fan_stage { height: auto; }
  .discipline_sticky,
  .paper_fan_sticky { position: relative; top: auto; height: auto; min-height: 100svh; }
  .type_fracture_stage { height: 280svh; }
  .type_fracture_sticky { position: sticky; top: 0; height: 100svh; min-height: 0; padding: 20vh 16px; }
  .fracture_eyebrow,
  .fracture_caption { left: 16px; right: 16px; }
  .fracture_words { height: 56svh; }
  .fracture_word { font-size: clamp(4rem, 23vw, 8rem); opacity: 1; }
  .discipline_stage { margin-top: 0; }
  .discipline_sticky { padding: 96px 16px 64px; opacity: 1; }
  .discipline_item { min-height: 22svh; opacity: 1; transform: none; align-items: flex-end; padding-bottom: 20px; }
  .discipline_item span { font-size: clamp(2.2rem, 12vw, 4.3rem); }
  .paper_fan_sticky { min-height: 0; padding: 0 0 56px; }
  .paper_fan_label { position: static; margin: 0; padding: 96px 16px 0; }
  .paper_fan_title { position: relative; inset: auto; min-height: 36svh; padding: 32px 16px; opacity: 1; }
  .paper_fan_title span { position: static; display: block; font-size: clamp(3rem, 17vw, 5rem); text-align: left; transform: none; }
  .paper_fan_title span:first-child { transform: none; }
  .paper_fan_title span:last-child { margin-top: 8px; transform: none; }
  .paper_fan_subtitle { position: static; display: block; margin: 12px 0; text-align: left; transform: none; }
  .paper_fan_orbits { display: none; }
  .paper_helix_canvas,
  .paper_fan_stripes { display: none; }
  .paper_fan { position: relative; inset: auto; width: 100%; height: auto; display: flex; gap: 14px; overflow-x: auto; padding: 0 16px; perspective: none; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .paper_fan::-webkit-scrollbar { display: none; }
  .work_paper { position: relative; left: auto; top: auto; flex: 0 0 86vw; width: auto; transform: none; scroll-snap-align: center; }
  .paper_fan_caption { position: static; margin: 20px 16px 0; }
  .paper_fan_link { position: static; margin: 32px 16px 0 auto; }
  .project_index { min-height: 0; padding: 72px 16px; grid-template-columns: 1fr; gap: 64px; }
  .project_sheet,
  .project_sheet:nth-child(4n + 4) { grid-column: auto; transform: none; }
  article.project_sheet { margin-bottom: 0; }
  .work_detail_stage { height: 380svh; }
  .work_detail_sticky { position: sticky; top: 0; height: 100svh; min-height: 0; overflow: hidden; }
  .work_detail_title_track { gap: 28px; }
  .work_detail_title_track span { font-size: clamp(4.8rem, 22vw, 6.8rem); }
  .work_detail_statement { left: 16px; top: 11.5svh; max-width: 10rem; font-size: 0.72rem; }
  .work_detail_link { display: none; }
  .work_detail_viewport { inset: auto 0 3svh; }
  .work_detail_rail_caption { margin-bottom: var(--space_4); padding: 0 16px; font-size: 0.62rem; text-align: left; }
  .work_detail_track { gap: 14px; padding: 0; }
  .work_detail_card { flex-basis: 90vw; height: 30svh; min-height: 244px; padding: 20px; grid-template-columns: minmax(0, 1fr) 32%; column-gap: 16px; }
  .work_detail_card strong { font-size: 1.35rem; }
  .work_detail_card_number,
  .work_detail_card_copy,
  .work_detail_card_action { font-size: 0.64rem; }
}

@media (prefers-reduced-motion: reduce) {
  .fracture_word,
  .discipline_item,
  .work_paper,
  .work_detail_track { transform: none; opacity: 1; }
  .type_fracture_stage,
  .discipline_stage,
  .paper_fan_stage,
  .work_detail_stage { height: auto; }
  .discipline_stage { margin-top: 0; }
  .discipline_sticky { opacity: 1; }
  .type_fracture_sticky { opacity: 1; }
  .type_fracture_sticky,
  .discipline_sticky,
  .paper_fan_sticky,
  .work_detail_sticky { position: relative; height: auto; min-height: 100svh; }
  .paper_fan_sticky { min-height: auto; padding-bottom: 64px; }
  .paper_fan_label { position: static; padding: 64px var(--space_page) 0; }
  .paper_fan_title { position: relative; inset: auto; padding: 40px var(--space_page); opacity: 1; }
  .paper_fan_title span,
  .paper_fan_subtitle { position: static; display: block; transform: none; }
  .paper_fan_title span:last-child { transform: none; }
  .paper_fan_title span:first-child { transform: none; }
  .paper_fan_subtitle { margin-block: var(--space_4); }
  .paper_fan_orbits { display: none; }
  .paper_helix_canvas,
  .paper_fan_stripes { display: none; }
  .paper_fan { position: relative; inset: auto; height: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; padding: 0 var(--space_page); perspective: none; }
  .work_paper { position: relative; left: auto; top: auto; width: auto; }
  .paper_fan_caption { position: static; margin: 24px var(--space_page) 0; }
  .paper_fan_link { position: static; margin: 24px var(--space_page) 0 auto; }
  .work_detail_sticky { overflow: visible; color: var(--color_black); }
  .work_detail_media,
  .work_detail_titles { display: none; }
  .work_detail_intro { position: relative; inset: auto; min-height: 36svh; color: var(--color_black); mix-blend-mode: normal; opacity: 1; }
  .work_detail_statement { top: auto; bottom: var(--space_8); }
  .work_detail_link { top: auto; bottom: var(--space_8); }
  .work_detail_viewport { position: relative; inset: auto; overflow-x: auto; padding: var(--space_10) 0 var(--space_16); opacity: 1; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .work_detail_viewport::-webkit-scrollbar { display: none; }
  .work_detail_rail_caption { color: var(--color_black); mix-blend-mode: normal; text-align: left; padding: 0 var(--space_page); }
  .work_detail_track { width: max-content; padding: 0 var(--space_page); transform: none; }
  .work_detail_panel { flex: 0 0 min(90vw, 536px); transform: none; scroll-snap-align: center; }
}