/* ================================================================
   OPERATION / NICHES
================================================================ */
.operation {
  background: var(--paper);
  border-bottom: var(--border-thick);
  position: relative; overflow: hidden;
}
.operation::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    90deg, transparent, transparent 22px,
    rgba(26,8,0,0.025) 22px, rgba(26,8,0,0.025) 23px
  );
  pointer-events: none;
}
.operation-inner {
  max-width: 1160px; margin: 0 auto;
  padding: 80px 60px;
  position: relative; z-index: 1;
}
.operation-eyebrow {
  font-size: 9px; font-weight: 700;
  letter-spacing: 4px; text-transform: uppercase;
  color: var(--amber-800); margin-bottom: 16px;
}
.operation-heading {
  font-family: var(--font-display);
  font-size: clamp(52px, 6.5vw, 80px);
  letter-spacing: 4px; line-height: 0.93;
  color: var(--ink); margin-bottom: 40px;
}
.operation-heading span { color: var(--amber-800); display: block; }

/* Niches grid */
.niches-grid {
  display: flex;
  flex-direction: column;
  border: var(--border-thick);
  box-shadow: var(--shadow-lg);
}
.niche {
  display: grid;
  grid-template-columns: 100px 1fr 2fr;
  align-items: center;
  border-bottom: var(--border);
  transition: background 0.12s, transform 0.08s, box-shadow 0.08s;
  cursor: default;
}
.niche:last-child { border-bottom: none; }
.niche:hover {
  background: var(--amber-800);
  transform: translate(-3px,-3px);
  box-shadow: 3px 3px 0 var(--ink);
  z-index: 1;
  position: relative;
}
.niche:hover .niche-num,
.niche:hover .niche-title,
.niche:hover .niche-desc { color: var(--paper); }

.niche-num {
  font-family: var(--font-display);
  font-size: 52px; line-height: 1;
  color: var(--amber-800);
  padding: 28px 0 28px 30px;
  border-right: var(--border);
  transition: color 0.12s;
}
.niche-title {
  font-family: var(--font-display);
  font-size: 20px; letter-spacing: 2px;
  color: var(--ink);
  padding: 28px 24px;
  border-right: var(--border);
  transition: color 0.12s;
}
.niche-desc {
  font-size: 12px; line-height: 1.75;
  color: var(--ink-mid);
  padding: 28px 30px;
  transition: color 0.12s;
}