*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #fff;
  font-family: 'Manrope', sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Nav ── */
.case-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 64px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.case-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Manrope', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: #000;
  text-decoration: none;
  transition: opacity 0.2s ease-out;
}

.case-nav-back:hover { opacity: 0.5; }

.case-nav-back .material-icons { font-size: 18px; }

.case-nav-brand {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a8a8a;
}

/* ── Content ── */
.case-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 64px 140px;
  display: flex;
  flex-direction: column;
  gap: 80px;
}

/* ── Hero ── */
.case-hero {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 820px;
}

.case-eyebrow {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a8a8a;
}

.case-hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 60px;
  line-height: 1.05;
  color: #000;
}

.case-hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: #5a5a5a;
}

/* ── Images ── */
.case-img {
  border-radius: 8px;
  overflow: hidden;
  background: #f1f2f4;
}

.case-img--hero {
  height: 640px;
}

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

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

.case-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Meta ── */
.case-meta {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
  padding: 56px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.case-meta-label {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a8a8a;
  margin-bottom: 20px;
}

.case-scope-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-scope-list li {
  font-size: 16px;
  color: #000;
}

.case-body {
  font-size: 17px;
  line-height: 1.75;
  color: #2a2a2a;
}

/* ── Chapters ── */
.case-chapter {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.case-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 680px;
}

.case-section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 40px;
  line-height: 1.1;
  color: #000;
}

/* ── Responsive ── */
@media (max-width: 767px) {
  .case-nav       { padding: 16px 24px; }
  .case-content   { padding: 48px 24px 100px; gap: 56px; }
  .case-hero-title { font-size: 36px; }
  .case-section-title { font-size: 28px; }
  .case-meta      { grid-template-columns: 1fr; gap: 40px; }
  .case-img-grid  { grid-template-columns: 1fr; }
  .case-img--hero { height: 360px; }
}