:root {
  --type-scale: 0.8;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --case-ink: #13251f;
  --case-muted: rgba(19, 37, 31, 0.62);
  --case-line: rgba(19, 37, 31, 0.13);
  --case-paper: #fff;
  --case-panel: #f7f7f7;
  --case-radius: 8px;
  --case-ui-size: 14px;
  --case-label-size: 13px;
  --case-body-size: 16px;
  --case-title-size: clamp(20px, calc(2.4rem * var(--type-scale)), 29px);
  --case-section-title-size: clamp(26px, calc(2.5vw * var(--type-scale)), 42px);
  --case-card-label-size: 13px;
  --case-card-title-size: 18px;
  --case-card-body-size: 16px;
  --case-gap-related: 1.2rem;
  --case-gap-tight: 2.4rem;
  --case-gap-block: 4.8rem;
  --case-gap-section: 12rem;
  --case-gap-exit: 8rem;
  --case-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html {
  color: var(--case-ink);
  background: var(--case-paper);
  font-family: var(--font-sans);
  font-size: clamp(9px, 0.694445vw, 13.34px);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

html::-webkit-scrollbar { display: none; }

html.lenis { height: auto; }
html.lenis.lenis-smooth { scroll-behavior: auto !important; }
html.lenis.lenis-stopped { overflow: hidden; }
html.lenis.lenis-scrolling iframe { pointer-events: none; }

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--case-paper);
}

body.is-case-menu-open { overflow: hidden; }

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

.case-layout {
  display: grid;
  grid-template-columns: 32rem minmax(0, 1fr);
  gap: 1.6rem;
  padding: 0 1.6rem;
}

.case-rail {
  position: sticky;
  top: 0;
  display: flex;
  height: 100svh;
  flex-direction: column;
  padding: 1.6rem 0;
}

.case-breadcrumb {
  display: flex;
  min-height: 46px;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(19, 37, 31, 0.06);
  border-radius: var(--case-radius);
  background: rgba(255, 255, 255, 0.42);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0),
    0 8px 30px rgba(19, 37, 31, 0);
  -webkit-backdrop-filter: blur(29px) saturate(160%);
  backdrop-filter: blur(29px) saturate(160%);
  font-size: 14px;
  line-height: 1;
}

.case-breadcrumb span {
  padding: 11px 15px 11px 0;
}

.case-breadcrumb svg {
  width: 14px;
  height: 14px;
  margin-left: 5px;
  stroke-width: 1.5;
}

.case-rail-summary {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  margin-top: 5.2rem;
  padding: 0 1.2rem;
}

.case-rail-summary > div {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.case-rail h1,
.case-rail p,
.case-content h1,
.case-content h2,
.case-content h3,
.case-content p,
.case-content figure,
.case-content dl,
.case-overlay-summary h2,
.case-overlay-summary p { margin: 0; }

.case-rail h1 {
  font-size: var(--case-title-size);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.03em;
}

.case-rail-summary p {
  color: var(--case-muted);
  font-size: var(--case-ui-size);
  line-height: 1.25;
}

.case-rail-summary .case-eyebrow {
  color: var(--case-ink);
  font-size: var(--case-label-size);
  letter-spacing: .03em;
  text-transform: uppercase;
}

.case-chapters {
  display: flex;
  flex-direction: column;
  margin-top: 3.2rem;
  padding: 0 1.2rem;
}

.case-chapters a {
  position: relative;
  padding: 1.1rem 0;
  color: var(--case-muted);
  font-size: var(--case-ui-size);
  line-height: 1;
  transition: color 250ms ease;
}

.case-chapters a::before {
  position: absolute;
  top: 50%;
  left: -1.2rem;
  width: .35rem;
  height: .35rem;
  border-radius: 50%;
  background: currentColor;
  content: "";
  opacity: 0;
  transform: translateY(-50%);
}

.case-chapters a[aria-current="true"] { color: var(--case-ink); }
.case-chapters a[aria-current="true"]::before { opacity: 1; }

.case-content {
  min-width: 0;
  padding: 1.6rem 0;
}

.case-hero,
.case-media {
  overflow: hidden;
  border-radius: var(--case-radius);
  background: var(--case-panel);
}

.case-hero {
  aspect-ratio: 16 / 9;
}

.case-hero img,
.case-hero video,
.case-media img,
.case-media video,
.case-mobile-hero img,
.case-mobile-hero video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-section { scroll-margin-top: 1.6rem; }
.case-section + .case-section { margin-top: var(--case-gap-section); }

.case-intro-grid,
.case-text-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .9fr) minmax(30rem, 1.15fr);
  gap: 4rem;
  padding: 0 2rem;
}

.case-intro-grid { margin-top: var(--case-gap-tight); }

.case-intro-grid h2,
.case-text-grid h2 {
  font-size: var(--case-section-title-size);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.045em;
  text-wrap: balance;
}

.case-reveal-line-mask { overflow-clip-margin: 0.12em; }

.case-intro-grid > p,
.case-text-grid > div > p {
  color: var(--case-muted);
  font-size: var(--case-body-size);
  line-height: 1.45;
  letter-spacing: -.01em;
}

.case-text-grid > div { display: flex; flex-direction: column; gap: 2rem; }

.case-section-label {
  color: var(--case-muted);
  font-size: var(--case-label-size);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  overflow: hidden;
  margin-top: var(--case-gap-block) !important;
  border: 1px solid var(--case-line);
  border-radius: var(--case-radius);
}

.case-facts div { padding: 1.6rem 2rem; border-right: 1px solid var(--case-line); }
.case-facts div:last-child { border-right: 0; }
.case-facts dt { color: var(--case-muted); font-size: var(--case-card-label-size); line-height: 1.25; }
.case-facts dd { margin: 0.8rem 0 0; font-size: var(--case-card-body-size); line-height: 1.35; }

.case-text-grid + .case-media { margin-top: var(--case-gap-block); }
.case-media-wide { aspect-ratio: 16 / 9; }

.case-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  overflow: hidden;
  margin: var(--case-gap-tight) 0 0;
  border: 1px solid var(--case-line);
  border-radius: var(--case-radius);
}

.case-principles article { min-height: 18rem; padding: 1.8rem 2rem; border-right: 1px solid var(--case-line); }
.case-principles article:last-child { border-right: 0; }
.case-principles span { color: var(--case-muted); font-size: var(--case-card-label-size); line-height: 1.25; }
.case-principles h3 { margin-top: 4rem; font-size: var(--case-card-title-size); font-weight: 400; line-height: 1.2; }
.case-principles p { margin-top: 1rem; color: var(--case-muted); font-size: var(--case-card-body-size); line-height: 1.45; }

.case-media-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--case-gap-related);
  margin: var(--case-gap-related) 0 0;
}

.case-media-pair .case-media { aspect-ratio: 16 / 9; }
.case-media-pair img { object-position: center; }
.case-subsection { margin-top: var(--case-gap-section); }

.case-next {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 2rem;
  align-items: center;
  margin-top: var(--case-gap-exit);
  padding: 0 2rem 2rem;
  font-size: var(--case-ui-size);
}
.case-next span { color: var(--case-muted); }
.case-next strong { font-weight: 400; font-size: var(--case-body-size); }
.case-next svg { width: 1.6rem; height: 1.6rem; }

.case-mobile-back,
.case-mobile-hero,
.case-mobile-summary,
.case-mobile-nav,
.case-chapter-overlay { display: none; }

@media (max-width: 800px) {
  :root {
    --case-gap-block: 3.2rem;
    --case-gap-section: 8rem;
    --case-gap-exit: 6rem;
  }
  html { font-size: 10px; }
  .case-layout { display: block; padding: 0; }
  .case-rail { display: none; }
  .case-content { padding: 0 1.6rem 10rem; }
  .case-hero { display: none; }
  .case-mobile-back {
    position: fixed;
    top: 1.6rem;
    left: 1.6rem;
    z-index: 30;
    display: grid;
    width: 4.4rem;
    height: 4.4rem;
    place-items: center;
    border-radius: var(--case-radius);
    background: rgba(255,255,255,.88);
    backdrop-filter: blur(1.2rem);
  }
  .case-mobile-back svg { width: 1.8rem; height: 1.8rem; }
  .case-mobile-hero {
    display: block;
    height: 62svh;
    margin: 0 -1.6rem;
    background: var(--case-panel);
  }
  .case-mobile-summary { display: block; padding: 2.4rem 0 var(--case-gap-block); }
  .case-mobile-summary h1 { font-size: var(--case-title-size); font-weight: 400; letter-spacing: -0.035em; }
  .case-mobile-summary p { margin-top: 0.4rem; color: var(--case-muted); font-size: var(--case-body-size); line-height: 1.25; }
  .case-mobile-summary span { display: block; margin-top: 2rem; font-size: var(--case-label-size); text-transform: uppercase; }
  .case-intro-grid,
  .case-text-grid { grid-template-columns: 1fr; gap: 2rem; padding: 0; }
  .case-intro-grid { margin-top: 0; }
  .case-intro-grid h2,
  .case-text-grid h2 { font-size: var(--case-section-title-size); }
  .case-intro-grid > p,
  .case-text-grid > div > p { font-size: var(--case-body-size); }
  .case-facts { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .case-facts div { min-height: 10rem; padding: 1.4rem 0; border-right: 0; border-bottom: 1px solid var(--case-line); }
  .case-facts div:nth-child(odd) { padding-right: 1.2rem; border-right: 1px solid var(--case-line); }
  .case-facts div:nth-child(even) { padding-left: 1.2rem; }
  .case-facts div:nth-last-child(-n+2) { border-bottom: 0; }
  .case-media-wide { aspect-ratio: 4 / 3; }
  .case-principles { grid-template-columns: 1fr; }
  .case-principles article { min-height: 0; padding: 1.8rem 1.4rem 2.4rem; border-right: 0; border-bottom: 1px solid var(--case-line); }
  .case-principles article:last-child { border-bottom: 0; }
  .case-principles h3 { margin-top: 2.5rem; }
  .case-media-pair { grid-template-columns: 1fr; }
  .case-media-pair .case-media { aspect-ratio: 4 / 3; }
  .case-next { grid-template-columns: 1fr auto; padding: 0 0 1.8rem; }
  .case-next span { display: none; }
  .case-mobile-nav {
    position: fixed;
    right: 3.5rem;
    bottom: 1.6rem;
    left: 3.5rem;
    z-index: 40;
    display: grid;
    min-height: 5rem;
    grid-template-columns: 1fr 1fr auto;
    gap: 1rem;
    align-items: center;
    padding: .5rem .6rem .5rem 1.6rem;
    border: 1px solid rgba(19,37,31,.08);
    border-radius: 999px;
    background: rgba(255,255,255,.88);
    box-shadow: 0 1rem 4rem rgba(19,37,31,.12);
    backdrop-filter: blur(2rem) saturate(160%);
    font-size: var(--case-label-size);
    text-align: left;
  }
  .case-mobile-nav span:nth-child(2) { color: var(--case-muted); }
  .case-mobile-nav svg { width: 3.8rem; height: 3.8rem; padding: 1.1rem; border-radius: 50%; background: var(--case-ink); color: #fff; transition: transform 450ms var(--case-ease); }
  .case-mobile-nav[aria-expanded="true"] svg { transform: rotate(45deg); }
  .case-chapter-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    padding: 4rem 1.6rem 2rem;
    background: var(--case-ink);
    color: #fff;
    opacity: 0;
    pointer-events: none;
    transform: translateY(2rem);
    transition: opacity 420ms ease, transform 550ms var(--case-ease);
  }
  .case-chapter-overlay[aria-hidden="false"] { opacity: 1; pointer-events: auto; transform: none; }
  .case-overlay-summary { padding-bottom: 3.2rem; }
  .case-overlay-summary h2 { font-size: var(--case-title-size); font-weight: 400; }
  .case-overlay-summary p { margin-top: 0.5rem; color: rgba(255,255,255,.62); font-size: var(--case-body-size); }
  .case-overlay-summary span { display: block; margin-top: 1.8rem; color: rgba(255,255,255,.62); font-size: var(--case-label-size); text-transform: uppercase; }
  .case-chapter-overlay nav { border-top: 1px solid rgba(255,255,255,.16); }
  .case-chapter-overlay nav a { display: block; padding: 1.6rem 0; border-bottom: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.58); }
  .case-chapter-overlay nav a span { font-size: var(--case-ui-size); }
  .case-chapter-overlay nav a p { display: none; margin: 1rem 0 0; color: rgba(255,255,255,.72); font-size: var(--case-ui-size); line-height: 1.4; }
  .case-chapter-overlay nav a[aria-current="true"] { color: #fff; }
  .case-chapter-overlay nav a[aria-current="true"]::before { content: "• "; }
  .case-chapter-overlay nav a[aria-current="true"] p { display: block; }
  .case-overlay-close { display: inline-flex; align-items: center; gap: 0.8rem; align-self: center; margin-top: auto; padding: 1.4rem 2rem; border: 0; border-radius: 999px; background: rgba(255,255,255,.1); color: #fff; font-size: var(--case-label-size); text-transform: uppercase; }
  .case-overlay-close svg { width: 1.3rem; height: 1.3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}