.case-study-page {
  background:
    radial-gradient(circle at 85% 6%, rgba(199, 239, 119, 0.07), transparent 24%),
    radial-gradient(circle at 12% 20%, rgba(242, 92, 58, 0.08), transparent 24%),
    var(--ink);
}

.case-study-page::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(90deg, transparent 49.94%, rgba(238, 233, 223, 0.032) 50%, transparent 50.06%),
    linear-gradient(rgba(238, 233, 223, 0.018) 1px, transparent 1px);
  background-size: 100% 100%, 100% 88px;
  pointer-events: none;
}

.case-progress {
  position: fixed;
  z-index: 90;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: rgba(238, 233, 223, 0.08);
}

.case-progress i {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
}

.case-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-height) + clamp(78px, 9vw, 150px));
}

.case-hero::before {
  content: "III";
  position: absolute;
  top: 11%;
  right: -0.06em;
  color: rgba(238, 233, 223, 0.023);
  font-family: var(--serif);
  font-size: clamp(320px, 48vw, 760px);
  line-height: 0.7;
  letter-spacing: -0.14em;
  pointer-events: none;
}

.case-hero-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 1620px);
  display: grid;
  grid-template-columns: minmax(0, 0.87fr) minmax(0, 1.13fr);
  align-items: center;
  gap: clamp(44px, 4.8vw, 88px);
}

.case-back-link {
  width: max-content;
  margin-bottom: clamp(58px, 8vw, 112px);
  min-height: 48px;
  padding: 0 17px 0 15px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid rgba(238, 233, 223, 0.14);
  background: rgba(238, 233, 223, 0.025);
  color: var(--mist);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  backdrop-filter: blur(10px);
  box-shadow:
    0 14px 34px rgba(0, 0, 0, 0.24),
    0 3px 9px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(238, 233, 223, 0.035);
  transition:
    border-color 220ms ease,
    background 220ms ease,
    color 220ms ease,
    box-shadow 220ms ease,
    transform 220ms var(--ease);
}

.case-back-link span:first-child {
  color: var(--accent);
  font-size: 17px;
  transition: transform 200ms var(--ease);
}

.case-back-link:hover {
  border-color: rgba(238, 233, 223, 0.3);
  background: rgba(238, 233, 223, 0.065);
  color: var(--paper);
  box-shadow:
    0 17px 38px rgba(0, 0, 0, 0.3),
    0 4px 11px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(238, 233, 223, 0.06);
  transform: translateY(-1px);
}

.case-back-link:hover span:first-child {
  transform: translateX(-5px);
}

.case-kicker,
.case-number {
  margin: 0;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
}

.case-kicker {
  color: var(--accent);
}

.case-number {
  margin-top: 12px;
  color: var(--mist);
}

.case-title-block h1 {
  margin: 28px 0 0;
  font-family: var(--serif);
  font-size: clamp(66px, 8.2vw, 136px);
  font-weight: 400;
  line-height: 0.82;
  letter-spacing: -0.085em;
}

.case-title-block h1 span,
.case-title-block h1 em {
  display: block;
}

.case-title-block h1 em {
  margin-left: clamp(12px, 2.6vw, 42px);
  color: var(--accent);
  font-weight: 400;
}

.case-deck {
  max-width: 610px;
  margin: 34px 0 0;
  color: var(--paper-dim);
  font-size: clamp(14px, 1vw, 17px);
  line-height: 1.8;
}

.case-actions {
  margin-top: 38px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.case-action {
  min-width: 0;
  min-height: 58px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid rgba(238, 233, 223, 0.26);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  transition:
    color 220ms ease,
    border-color 220ms ease,
    background 220ms ease,
    transform 220ms var(--ease);
}

.case-action:hover {
  border-color: var(--paper);
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-2px);
}

.case-action-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #1b100d;
}

.case-action-primary:hover {
  border-color: var(--paper);
}

.case-action-note {
  border-color: rgba(199, 239, 119, 0.55);
  color: var(--chartreuse);
}

.case-action-muted {
  border-color: rgba(238, 233, 223, 0.12);
  background: rgba(238, 233, 223, 0.018);
  color: rgba(238, 233, 223, 0.4);
  cursor: not-allowed;
}

.case-action-muted:hover {
  border-color: rgba(238, 233, 223, 0.12);
  background: rgba(238, 233, 223, 0.018);
  color: rgba(238, 233, 223, 0.4);
  transform: none;
}

.case-cover {
  position: relative;
  top: calc(24px + clamp(29px, 4vw, 56px));
  margin: 0;
}

.case-cover::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -18px 18px 18px -18px;
  border: 1px solid rgba(242, 92, 58, 0.48);
}

.case-cover-frame {
  padding: clamp(10px, 1.4vw, 20px);
  border: 1px solid rgba(238, 233, 223, 0.34);
  background: rgba(10, 12, 9, 0.82);
}

.case-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: contain;
}

.case-cover figcaption {
  margin-top: 13px;
  color: var(--mist);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-align: right;
}

.case-meta {
  position: relative;
  z-index: 2;
  margin-top: clamp(70px, 8vw, 120px);
  padding-block: 22px;
  display: grid;
  grid-template-columns: 0.72fr 1.45fr 0.9fr 0.9fr 1.35fr;
  gap: 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-meta div {
  min-width: 0;
}

.case-meta dt,
.case-section-label,
.case-chapter-kicker {
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.case-meta dd {
  margin: 8px 0 0;
  color: var(--paper-dim);
  font-size: 14px;
  line-height: 1.5;
}

.case-premise-band {
  margin-top: clamp(70px, 8vw, 120px);
  background: var(--paper);
  color: var(--ink);
}

.case-premise {
  padding-block: clamp(82px, 10vw, 150px);
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) minmax(0, 1.65fr);
  gap: clamp(34px, 8vw, 120px);
}

.case-premise .case-section-label {
  color: var(--accent);
}

.case-premise h2 {
  max-width: 1100px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 6.4vw, 98px);
  font-weight: 400;
  line-height: 0.94;
  letter-spacing: -0.06em;
  white-space: pre-line;
}

.case-premise p {
  max-width: 820px;
  margin: 36px 0 0;
  color: #56594f;
  font-size: clamp(14px, 1.02vw, 17px);
  line-height: 1.85;
}

.case-process {
  padding-top: clamp(56px, 6vw, 96px);
  padding-bottom: clamp(110px, 13vw, 190px);
}

.case-process-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.case-process-header::before {
  content: "";
  flex: 0 0 34px;
  width: 34px;
  height: 2px;
  background: var(--accent);
}

.case-process-title {
  margin: 0;
  color: var(--paper);
  font-family: var(--sans);
  font-size: clamp(16px, 1.35vw, 22px);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.case-process-layout {
  margin-top: clamp(34px, 4vw, 58px);
  display: grid;
  grid-template-columns: minmax(150px, 0.27fr) minmax(0, 1.73fr);
  gap: clamp(42px, 7vw, 110px);
  align-items: start;
}

.case-chapter-nav {
  position: sticky;
  top: 108px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.case-chapter-nav > p {
  margin: 0;
  padding: 15px 0;
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.17em;
}

.case-chapter-nav a {
  padding: 15px 0;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  border-top: 1px solid rgba(238, 233, 223, 0.08);
  color: var(--mist);
  transition: color 180ms ease;
}

.case-chapter-nav a span {
  color: rgba(238, 233, 223, 0.34);
  font-size: 10px;
}

.case-chapter-nav a b {
  font-size: 13px;
  line-height: 1.45;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.case-chapter-nav a:hover,
.case-chapter-nav a.is-active {
  color: var(--paper);
}

.case-chapter-nav a.is-active span {
  color: var(--accent);
}

.case-chapter-stack,
.case-gallery {
  display: grid;
  gap: clamp(40px, 5vw, 72px);
}

.case-gallery-item {
  margin: 0;
  padding: clamp(7px, 0.9vw, 12px);
  border: 1px solid rgba(238, 233, 223, 0.2);
  background: #060706;
  scroll-margin-top: 100px;
}

.case-gallery-item img {
  width: 100%;
  height: auto;
  border: 1px solid rgba(238, 233, 223, 0.08);
  transition: transform 700ms var(--ease);
}

.case-placeholder {
  position: relative;
  aspect-ratio: 2 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(238, 233, 223, 0.1);
  background:
    radial-gradient(circle at 72% 42%, rgba(199, 239, 119, 0.12), transparent 32%),
    radial-gradient(circle at 20% 85%, rgba(242, 92, 58, 0.12), transparent 28%),
    linear-gradient(135deg, #151812, #0b0d0a);
  isolation: isolate;
}

.case-placeholder::before {
  content: "";
  position: absolute;
  z-index: -1;
  width: 44%;
  aspect-ratio: 1;
  border: 1px solid rgba(238, 233, 223, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 38px rgba(238, 233, 223, 0.018),
    0 0 0 76px rgba(238, 233, 223, 0.012);
}

.case-placeholder small,
.case-placeholder b {
  position: absolute;
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.17em;
}

.case-placeholder small {
  top: 22px;
  left: 26px;
  color: var(--accent);
}

.case-placeholder b {
  right: 26px;
  bottom: 22px;
  color: var(--chartreuse);
}

.case-placeholder strong {
  max-width: 70%;
  padding-inline: 24px;
  color: var(--paper-dim);
  font-family: var(--serif);
  font-size: clamp(24px, 3.1vw, 48px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.04em;
  text-align: center;
}

.case-gallery-item:hover img {
  transform: scale(1.008);
}

.case-chapter {
  scroll-margin-top: 110px;
}

.case-chapter-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.65fr);
  align-items: start;
  gap: clamp(34px, 6vw, 84px);
}

.case-chapter-kicker {
  margin: 0;
}

.case-chapter h2 {
  max-width: 800px;
  margin: 20px 0 0;
  font-family: var(--serif);
  font-size: clamp(46px, 5.2vw, 84px);
  font-weight: 400;
  line-height: 0.94;
  letter-spacing: -0.055em;
  white-space: pre-line;
}

.case-chapter-heading > p {
  margin: 30px 0 0;
  color: var(--paper-dim);
  font-size: 13px;
  line-height: 1.85;
}

.case-board {
  margin: clamp(42px, 6vw, 78px) 0 0;
  padding: clamp(8px, 1vw, 14px);
  border: 1px solid rgba(238, 233, 223, 0.2);
  background: #060706;
}

.case-board img {
  width: 100%;
  height: auto;
  border: 1px solid rgba(238, 233, 223, 0.09);
  transition: transform 700ms var(--ease);
}

.case-board:hover img {
  transform: scale(1.012);
}

.case-board figcaption {
  padding: 12px 4px 2px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--mist);
  font-size: 7px;
  letter-spacing: 0.15em;
}

.case-board figcaption span:first-child {
  color: var(--accent);
}

.case-board figcaption b {
  font-weight: 400;
}

.case-note-grid,
.case-system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.case-note-grid > div,
.case-system-grid > div {
  padding: 20px 24px 22px 0;
  border-top: 1px solid var(--line);
}

.case-note-grid > div:not(:first-child),
.case-system-grid > div:not(:first-child) {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.case-note-grid span,
.case-system-grid span,
.case-flow-wrap > p:first-child,
.case-quote-grid span {
  color: var(--accent);
  font-size: 8px;
  letter-spacing: 0.15em;
}

.case-note-grid p,
.case-system-grid p {
  margin: 9px 0 0;
  color: var(--mist);
  font-size: 11px;
  line-height: 1.65;
}

.case-flow-wrap {
  padding-top: 24px;
  border-bottom: 1px solid var(--line);
}

.case-flow-wrap > p:first-child {
  margin: 0;
}

.case-flow {
  margin: 26px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  list-style: none;
}

.case-flow li {
  position: relative;
  min-height: 74px;
  padding: 0 18px 0 0;
  display: flex;
  align-items: flex-start;
  color: var(--paper-dim);
  font-family: var(--serif);
  font-size: clamp(15px, 1.2vw, 20px);
  line-height: 1.2;
}

.case-flow li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.case-flow li {
  padding-left: 16px;
}

.case-flow li::after {
  content: "→";
  position: absolute;
  top: 1px;
  right: 8px;
  color: rgba(238, 233, 223, 0.25);
  font-family: var(--sans);
  font-size: 12px;
}

.case-flow li:last-child::after {
  display: none;
}

.case-flow-note {
  margin: 0;
  padding: 18px 0 22px;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-size: 10px;
}

.case-emotion-line {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.case-emotion-line li {
  padding: 22px 24px 22px 0;
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-top: 1px solid var(--line);
}

.case-emotion-line li:not(:first-child) {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.case-emotion-line span {
  color: var(--accent);
  font-size: 8px;
}

.case-emotion-line b {
  color: var(--paper-dim);
  font-family: var(--serif);
  font-size: clamp(18px, 1.6vw, 27px);
  font-weight: 400;
}

.case-quote-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  border-bottom: 1px solid var(--line);
}

.case-quote-grid blockquote,
.case-quote-grid > div {
  margin: 0;
  padding: 24px 38px 24px 0;
  border-top: 1px solid var(--line);
}

.case-quote-grid > div {
  padding-left: 38px;
  border-left: 1px solid var(--line);
}

.case-quote-grid p {
  margin: 12px 0 0;
  color: var(--paper-dim);
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 31px);
  line-height: 1.35;
}

.case-quote-grid > div p {
  color: var(--mist);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.75;
}

.case-footer {
  padding-block: 30px;
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.case-footer .section-shell {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

@media (max-width: 1100px) {
  .case-hero-shell {
    grid-template-columns: 1fr;
  }

  .case-back-link {
    margin-bottom: 54px;
  }

  .case-cover {
    width: min(100%, 840px);
    justify-self: end;
    top: 0;
  }

  .case-meta {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .case-meta div:last-child {
    grid-column: 1 / -1;
  }

  .case-chapter-heading {
    grid-template-columns: 1fr;
  }

  .case-chapter-heading > p {
    max-width: 720px;
    margin-top: 0;
  }

  .case-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 16px;
  }

  .case-flow li:nth-child(3)::after {
    display: none;
  }
}

@media (max-width: 900px) {
  .case-study-page .site-header {
    --header-height: 70px;
  }

  .case-hero {
    padding-top: 120px;
  }

  .case-process-layout {
    grid-template-columns: 1fr;
  }

  .case-chapter-nav {
    position: static;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--line);
  }

  .case-chapter-nav > p {
    grid-column: 1 / -1;
  }

  .case-chapter-nav a {
    padding: 12px 10px 12px 0;
    grid-template-columns: 1fr;
  }

  .case-chapter-nav a span {
    margin-bottom: 5px;
  }

  .case-chapter-nav a b {
    line-height: 1.35;
  }
}

@media (max-width: 620px) {
  .case-progress {
    height: 2px;
  }

  .case-hero {
    padding-top: 104px;
  }

  .case-back-link {
    margin-bottom: 42px;
  }

  .case-title-block h1 {
    font-size: clamp(62px, 18vw, 86px);
  }

  .case-deck {
    margin-top: 28px;
    font-size: 14px;
  }

  .case-actions {
    grid-template-columns: 1fr;
  }

  .case-action {
    width: 100%;
  }

  .case-cover::before {
    inset: -10px 10px 10px -10px;
  }

  .case-cover-frame {
    padding: 8px;
  }

  .case-meta {
    margin-top: 62px;
    grid-template-columns: 1fr 1fr;
  }

  .case-meta div:last-child {
    grid-column: 1 / -1;
  }

  .case-premise {
    padding-block: 78px;
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .case-premise h2 {
    font-size: clamp(44px, 13vw, 60px);
  }

  .case-process {
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .case-process-layout {
    margin-top: 58px;
  }

  .case-chapter-nav {
    grid-template-columns: 1fr 1fr;
  }

  .case-chapter-nav a {
    min-height: 62px;
  }

  .case-chapter-stack {
    gap: 96px;
  }

  .case-chapter h2 {
    font-size: clamp(44px, 13vw, 60px);
  }

  .case-board figcaption {
    flex-direction: column;
    gap: 5px;
  }

  .case-placeholder small,
  .case-placeholder b {
    font-size: 8px;
  }

  .case-placeholder small {
    top: 14px;
    left: 16px;
  }

  .case-placeholder b {
    right: 16px;
    bottom: 14px;
  }

  .case-placeholder strong {
    max-width: 80%;
    font-size: clamp(19px, 6.5vw, 28px);
  }

  .case-note-grid,
  .case-system-grid,
  .case-emotion-line,
  .case-quote-grid {
    grid-template-columns: 1fr;
  }

  .case-note-grid > div,
  .case-note-grid > div:not(:first-child),
  .case-system-grid > div,
  .case-system-grid > div:not(:first-child),
  .case-emotion-line li,
  .case-emotion-line li:not(:first-child) {
    padding: 18px 0;
    border-left: 0;
  }

  .case-flow {
    grid-template-columns: 1fr 1fr;
  }

  .case-flow li:nth-child(3)::after,
  .case-flow li:nth-child(4)::after,
  .case-flow li:nth-child(5)::after {
    display: block;
  }

  .case-flow li:nth-child(even)::after {
    display: none;
  }

  .case-flow-note {
    flex-direction: column;
    gap: 7px;
  }

  .case-quote-grid blockquote,
  .case-quote-grid > div,
  .case-quote-grid > div {
    padding: 22px 0;
    border-left: 0;
  }

  .case-footer .section-shell {
    flex-direction: column;
    gap: 8px;
  }
}