/* ============================================================
   About block — Variant 1b
   ============================================================ */

.about-1b {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  padding: var(--section-py) var(--section-px);
}

.ab1-inner { width: 100%; }

/* Tier A */
.ab1-eyebrow {
  margin: 0 0 32px;
  font-weight: 600; font-size: 14px; line-height: 1;
  letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--text-dim);
}
.ab1-heading {
  margin: 0 0 56px;
  max-width: 22ch;
  font-weight: 700;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  text-wrap: balance;
}

/* Tier B — metric strip */
.ab1-metrics {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  margin-bottom: 56px;
}
.ab1-metrics__rule {
  display: block;
  height: 2px;
  background: #125bba;
  transform: scaleX(0);
  transform-origin: left;
}
.ab1-metrics__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.ab1-metric { padding: 36px 40px; }
.ab1-metric + .ab1-metric { border-left: 1px solid var(--border); }

.ab1-metric__label {
  margin: 0 0 24px;
  font-weight: 500; font-size: 13px; line-height: 1;
  letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--accent);
}
.ab1-metric__value {
  margin: 0 0 20px;
  font-weight: 700; font-size: 46px; line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.ab1-metric__desc {
  margin: 0;
  font-weight: 400; font-size: 16px; line-height: 1.6;
  color: var(--text-secondary);
}

/* Tier C */
.ab1-footer {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: start;
}
.ab1-intro {
  margin: 0;
  padding-top: 34px;
  font-weight: 300; font-size: 21px; line-height: 1.6;
  color: var(--text-secondary);
}
.ab1-label {
  margin: 0 0 20px;
  font-weight: 600; font-size: 14px; line-height: 1;
  letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--text-dim);
}
.ab1-chips {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 12px;
}
.ab1-chip {
  padding: 13px 22px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 400; font-size: 15px; line-height: 1;
  color: var(--text-secondary);
}

/* Entrance animations */
.ab1-anim { opacity: 0; }
.ab1-anim--blur { filter: blur(8px); }

.about-1b.is-visible .ab1-anim {
  animation: ab1FadeUp 600ms cubic-bezier(.2,.7,.2,1) var(--delay, 0ms) both;
}
.about-1b.is-visible .ab1-anim--blur {
  animation: ab1FadeUpBlur 700ms cubic-bezier(.2,.7,.2,1) var(--delay, 0ms) both;
}
.about-1b.is-visible .ab1-anim--pop {
  animation: ab1Pop 450ms cubic-bezier(.2,.7,.2,1) var(--delay, 0ms) both;
}
.about-1b.is-visible .ab1-metrics__rule {
  animation: ab1DrawX 600ms cubic-bezier(.2,.7,.2,1) 320ms both;
}

@keyframes ab1FadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ab1FadeUpBlur {
  from { opacity: 0; transform: translateY(22px); filter: blur(8px); }
  to   { opacity: 1; transform: translateY(0);    filter: blur(0); }
}
@keyframes ab1Pop {
  from { opacity: 0; transform: translateY(10px) scale(.94); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes ab1DrawX {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Responsive */
@media (max-width: 1023px) {
  .ab1-metrics__grid { grid-template-columns: 1fr; }
  .ab1-metric + .ab1-metric { border-left: 0; border-top: 1px solid var(--border); }
  .ab1-footer { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .ab1-metric { padding: 28px 24px; }
  .ab1-metric__value { font-size: 36px; }
  .ab1-intro { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .ab1-anim, .ab1-anim--blur { opacity: 1; filter: none; }
  .about-1b.is-visible .ab1-anim,
  .about-1b.is-visible .ab1-anim--blur,
  .about-1b.is-visible .ab1-anim--pop { animation: none; }
  .ab1-metrics__rule { transform: scaleX(1); }
}