html[lang="fa"] .case-study { font-family: 'YekanBakh', sans-serif; }

.case-study {
  max-width: 76rem;
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 7rem) clamp(1.5rem, 5vw, 4.5rem) clamp(5rem, 10vw, 8rem);
}

.cs-kicker,
.cs-label,
.cs-meta dt,
.cs-section-label {
  color: var(--lime);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cs-kicker { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.cs-kicker::before { content: ''; width: 2rem; height: 1px; background: currentColor; }
.cs-title {
  max-width: 15ch;
  margin: 0;
  color: var(--chalk);
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(4.5rem, 12vw, 10rem);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 0.86;
}
.cs-title em { color: var(--lime); font-style: normal; }
.cs-lede {
  max-width: 43rem;
  margin: clamp(1.75rem, 4vw, 3rem) 0 0;
  color: rgba(240,236,227,0.72);
  font-size: clamp(1.0625rem, 1.6vw, 1.3rem);
  line-height: 1.8;
}
.cs-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.cs-action {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(240,236,227,0.25);
  color: var(--chalk);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}
.cs-action--primary { background: var(--lime); border-color: var(--lime); color: var(--dark); }
.cs-action:hover { border-color: var(--lime); color: var(--lime); }
.cs-action--primary:hover { background: transparent; color: var(--lime); }
.cs-action:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }

.cs-hero-media {
  display: block;
  width: 100%;
  margin-top: clamp(3rem, 8vw, 6rem);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid rgba(240,236,227,0.14);
  background: rgba(255,255,255,0.03);
}
.cs-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1px;
  background: rgba(240,236,227,0.14);
}
.cs-meta > div { min-height: 7rem; padding: 1.25rem; background: var(--dark); }
.cs-meta dd { margin: 0.75rem 0 0; color: rgba(240,236,227,0.76); font-size: 0.9375rem; line-height: 1.5; }

.cs-grid { display: grid; grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr); gap: clamp(2rem, 7vw, 7rem); margin-top: clamp(4rem, 10vw, 8rem); }
.cs-rail { display: flex; flex-direction: column; gap: 1rem; }
.cs-rail p { margin: 0; color: rgba(240,236,227,0.47); font-size: 0.875rem; line-height: 1.65; }
.cs-content { display: grid; gap: clamp(2.25rem, 5vw, 4rem); }
.cs-section { border-top: 1px solid rgba(240,236,227,0.15); padding-top: 1.25rem; }
.cs-section h2 { margin: 0.75rem 0; color: var(--chalk); font-size: clamp(1.4rem, 2vw, 1.875rem); font-weight: 500; letter-spacing: -0.025em; }
.cs-section p { max-width: 44rem; margin: 0; color: rgba(240,236,227,0.66); font-size: 1rem; line-height: 1.8; }
.cs-section p + p { margin-top: 1rem; }
.cs-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.cs-list li { padding: 0.9rem 0; border-top: 1px solid rgba(240,236,227,0.12); color: rgba(240,236,227,0.78); font-size: 0.9rem; }
.cs-note { margin-top: clamp(3rem, 7vw, 6rem); padding: 1.5rem; border-left: 2px solid var(--lime); background: rgba(198,241,53,0.06); color: rgba(240,236,227,0.72); line-height: 1.7; }
.cs-note strong { color: var(--chalk); }

html[lang="fa"] .cs-title,
html[lang="fa"] .cs-kicker,
html[lang="fa"] .cs-label,
html[lang="fa"] .cs-meta dt,
html[lang="fa"] .cs-section-label { letter-spacing: 0; text-transform: none; }
html[lang="fa"] .cs-title { font-family: 'YekanBakh', sans-serif; font-size: clamp(2.75rem, 9vw, 6rem); line-height: 1.18; }
html[lang="fa"] .cs-kicker::before { margin-left: 0.75rem; margin-right: 0; }
html[lang="fa"] .cs-note { border-left: 0; border-right: 2px solid var(--lime); }

@media (max-width: 63.9375rem) {
  .cs-grid { grid-template-columns: 1fr; }
  .cs-rail { max-width: 42rem; }
}
@media (max-width: 43.9375rem) {
  .cs-meta { grid-template-columns: 1fr; }
  .cs-list { grid-template-columns: 1fr; }
  .cs-action { width: 100%; justify-content: center; }
}