footer { border-top: 1px solid var(--rule); }

/* ─── Case study header ─── */
.cs-header {
  padding: 72px 48px 64px;
  border-bottom: 1px solid var(--rule);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-muted);
  text-decoration: none;
  margin-bottom: 48px;
  transition: color 0.2s;
}

.back-link:hover { color: var(--ink); }
.back-link svg { width: 14px; height: 14px; stroke: currentColor; }

.cs-header-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
}

.cs-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cs-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border: 1px solid var(--rule);
  border-radius: 100px;
  color: var(--ink-muted);
}

.cs-title {
  font-family: 'Fraunces', serif;
  font-size: clamp(44px, 5.5vw, 80px);
  font-weight: 400;
  font-variation-settings: 'opsz' 72;
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 16px;
}

.cs-subtitle {
  font-size: 18px;
  font-weight: 300;
  line-height: 1.5;
  color: var(--ink-muted);
}

.cs-meta-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

.cs-meta-item:last-child { border-bottom: none; padding-bottom: 0; }

.cs-meta-label {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.cs-meta-value {
  font-size: 15px;
  font-weight: 300;
  color: var(--ink);
}

/* ─── Hero visual ─── */
.cs-hero-visual {
  height: 560px;
  background: radial-gradient(ellipse at 30% 80%, rgba(255,87,0,0.15) 0%, transparent 55%), linear-gradient(160deg, #111118 0%, #1a1a28 50%, #0e0e18 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.cs-hero-visual::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 80%;
  background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
  clip-path: polygon(35% 0%, 65% 0%, 80% 20%, 85% 55%, 70% 75%, 80% 100%, 20% 100%, 30% 75%, 15% 55%, 20% 20%);
}

/* ─── Content sections ─── */
.cs-section {
  padding: 80px 48px;
  border-bottom: 1px solid var(--rule);
}

/* Remove divider when a section is directly followed by its related visual */
.cs-section:has(+ .cs-visuals) {
  border-bottom: none;
  padding-bottom: 40px;
}

.cs-section-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}

.cs-section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 6px;
}

.cs-section-title {
  font-family: 'Fraunces', serif;
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 400;
  font-variation-settings: 'opsz' 72;
  line-height: 1.0;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 24px;
}

.cs-section-title em { font-style: italic; color: #3D2B1F; }

.cs-body p {
  font-size: 17px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 20px;
}

.cs-body p:last-child { margin-bottom: 0; }

.cs-caption {
  font-size: 13px;
  color: var(--ink-faint);
  margin-top: 10px;
  margin-bottom: 0;
  font-style: italic;
  line-height: 1.5;
}

.cs-caption a {
  color: var(--ink-faint);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.visual-placeholder {
  background: #eeece8;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: #999;
  font-size: 13px;
  font-family: 'DM Sans', sans-serif;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 20px;
}

/* ─── Visual grid ─── */
.cs-visuals {
  padding: 0 48px 80px;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 2fr;
  column-gap: 64px;
}

.cs-visuals > * {
  grid-column: 2;
}

.visuals-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.visuals-grid-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.visuals-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 14px;
}

.visual-block {
  border-radius: var(--radius);
  overflow: hidden;
}

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

.cs-hero-visual img {
  position: absolute;
  inset: 0;
  object-position: top;
}

/* Microsite CTA block */
.cs-microsite-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.cs-microsite-cta p {
  font-size: 13px;
  font-style: italic;
  color: var(--ink-faint);
  margin: 0;
  line-height: 1.5;
}

.cs-microsite-cta a.cs-live-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 100px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s;
  flex-shrink: 0;
}

.cs-microsite-cta a.cs-live-btn:hover { opacity: 0.75; }

.visuals-grid-1 {
  margin-top: 0;
}

.visual-block.wide-ui {
  aspect-ratio: 16/9;
  background: #f0f0f0;
  border: 1px solid var(--rule);
}

.visuals-grid-phones {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  align-items: start;
}

.visuals-grid-phones .visual-block img {
  object-position: top;
}

/* Stacked full-width desktop screenshots */
.visuals-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.visuals-stack .visual-block {
  width: 100%;
  background: #f5f3ef;
}

.visuals-stack .visual-block img {
  object-fit: contain;
  width: 100%;
  height: 100%;
  display: block;
}

/* Side-by-side row within a stack */
.visuals-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.visuals-row .visual-block {
  min-width: 0;
  background: #f5f3ef;
}

.visuals-row .visual-block img {
  object-fit: contain;
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 700px) {
  .visuals-grid-phones { gap: 10px; }
  .visuals-stack { gap: 10px; }
  .visuals-row { flex-direction: column; gap: 10px; }
  .visuals-row .visual-block { flex: unset !important; width: 100%; }
}

.visual-block.tall { aspect-ratio: 4/5; }
.visual-block.wide { aspect-ratio: 16/9; }
.visual-block.square { aspect-ratio: 1/1; }
.visual-block.phone { aspect-ratio: 9/19; }

.vb-1 { background: radial-gradient(ellipse at 35% 65%, rgba(255,120,0,0.2) 0%, transparent 60%), linear-gradient(135deg, #111118 0%, #1a1a2a 100%); }
.vb-2 { background: linear-gradient(160deg, #0e0e18 0%, #1a1a30 60%, #0a0a20 100%); }
.vb-3 { background: radial-gradient(ellipse at 60% 40%, rgba(80,100,255,0.2) 0%, transparent 55%), #0f0f20; }
.vb-4 { background: linear-gradient(135deg, #14141e 0%, #20202e 100%); }
.vb-5 { background: radial-gradient(ellipse at 40% 60%, rgba(255,87,0,0.12) 0%, transparent 50%), #181820; }

/* ─── Outcomes ─── */
.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 40px;
}

.outcome-item {
  padding: 32px 28px;
  border-right: 1px solid var(--rule);
}

.outcome-item:last-child { border-right: none; }

.outcome-number {
  font-family: 'Fraunces', serif;
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 400;
  font-variation-settings: 'opsz' 72;
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.outcome-label {
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* ─── Related work ─── */
.related-section {
  padding: 64px 48px 96px;
}

.related-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 32px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.related-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/2;
  cursor: pointer;
  text-decoration: none;
  display: block;
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1);
}

.related-card:hover { transform: scale(1.02); }

.rc-bg { position: absolute; inset: 0; overflow: hidden; transition: transform 0.5s; }
.rc-bg img { width: 100%; height: 100%; object-fit: cover; display: block; }
.related-card:hover .rc-bg { transform: scale(1.04); }
.rc-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.1) 60%, transparent 80%); }
.rc-content { position: absolute; bottom: 0; left: 0; right: 0; padding: 18px 20px; }
.rc-tags { display: flex; gap: 6px; margin-bottom: 6px; }
.rc-tag { font-size: 9px; font-weight: 500; letter-spacing: 0.09em; text-transform: uppercase; padding: 3px 8px; border: 1px solid rgba(255,255,255,0.2); border-radius: 100px; color: rgba(255,255,255,0.65); }
.rc-title { font-family: 'Fraunces', serif; font-size: 17px; font-weight: 300; color: #fff; line-height: 1.2; }

.rc2 .rc-bg { background: radial-gradient(ellipse at 65% 35%, rgba(60,210,120,0.55) 0%, rgba(30,180,80,0.2) 40%, transparent 65%), #d4ede0; }
.rc3 .rc-bg { background: radial-gradient(ellipse at 55% 30%, rgba(80,220,160,0.5) 0%, rgba(40,190,120,0.25) 45%, transparent 65%), #e0eed8; }
.rc4 .rc-bg { background: linear-gradient(135deg, #1a0828 0%, #3d1260 60%, #200840 100%); }

/* ─── Responsive ─── */
@media (max-width: 1100px) {
  .cs-header, .cs-section, .cs-visuals, .related-section { padding-left: 32px; padding-right: 32px; }
  .cs-header-grid { grid-template-columns: 1fr; gap: 40px; }
  .cs-section-grid { grid-template-columns: 1fr; gap: 24px; }
  .cs-visuals { grid-template-columns: 1fr; column-gap: 0; }
  .cs-visuals > * { grid-column: 1; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; }
  .outcome-item:nth-child(2) { border-right: none; }
  .outcome-item:nth-child(3) { border-top: 1px solid var(--rule); border-right: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .cs-header, .cs-section, .cs-visuals, .related-section { padding-left: 20px; padding-right: 20px; }
  .cs-hero-visual { height: 320px; }
  .visuals-grid-2, .visuals-grid-3, .visuals-grid-2x2 { grid-template-columns: 1fr; }
  .outcomes-grid { grid-template-columns: 1fr; }
  .outcome-item { border-right: none; border-bottom: 1px solid var(--rule); }
  .outcome-item:last-child { border-bottom: none; }
  .related-grid { grid-template-columns: 1fr; }
}