/* =========================================================
   Block: § 06 / USE CASES  (.usecases)
   Editorial rows: num · serif headline · problem→solution body.
   ========================================================= */
.usecases {
  padding: 120px 0;
  background: #ffffff;
}

.uc-row {
  display: grid;
  grid-template-columns: 100px 420px 1fr;
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--ink-100);
  align-items: start;
}
.uc-row:last-of-type { border-bottom: 1px solid var(--ink-100); }

.uc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-400);
  letter-spacing: .1em;
}

.uc-headline {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -.01em;
  font-weight: 500;
  color: var(--ink-900);
  margin: 0;
}
.uc-headline em {
  font-style: italic;
  color: var(--ink-500);
  font-weight: 400;
}

.uc-body-wrap { max-width: 620px; }
.uc-body-wrap p {
  color: var(--ink-700);
  font-size: 16px;
  line-height: 1.65;
  margin: 0 0 14px;
}
.uc-body-wrap p.solution {
  padding-top: 14px;
  border-top: 1px solid var(--ink-100);
  color: var(--ink-500);
  font-size: 15px;
}
.uc-body-wrap p.solution strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-900);
  margin-bottom: 8px;
  font-weight: 500;
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .uc-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 900px) {
  .uc-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 28px 0;
  }
  .uc-num {
    font-size: 12px;
    letter-spacing: .1em;
  }
  .uc-headline {
    font-size: 24px;
    line-height: 1.15;
  }
  .uc-body-wrap { font-size: 15px; }
}