/* ============================================================
   About Us — SF-SPEC v4 compliant (ab- prefix)
   Scope: body.page-about
   ============================================================ */

/* ── Shared section shell ── */
body.page-about .ab-section {
  padding: var(--section-pad) var(--container-pad);
  background: var(--bg-white);
}
body.page-about .ab-section--faint { background: var(--bg-faint); }
body.page-about .ab-section--dark { background: var(--bg-dark); }

body.page-about .ab-section__inner {
  max-width: var(--container);
  margin: 0 auto;
}

body.page-about .ab-divider {
  height: 1px;
  background: var(--border);
  margin: 0 var(--container-pad);
}

body.page-about .ab-eyebrow {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 20px;
  display: inline-block;
}

body.page-about .ab-section__title {
  font-family: var(--font-body);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 14px;
}
body.page-about .ab-section__title--light { color: var(--bg-white); }

body.page-about .ab-section__sub {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 520px;
}

/* ── S1 Hero ── */
body.page-about .ab-hero {
  background: var(--bg-white);
  margin-top: 20px;
}
body.page-about .ab-hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  align-items: center;
  padding: var(--section-pad) var(--container-pad);
}
body.page-about .ab-hero__title {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
body.page-about .ab-hero__p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
  max-width: 600px;
  margin-bottom: 16px;
}
body.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  padding-top: 32px;
  gap: 0;
}
body.page-about .ab-hero__stat {
  padding: 12px 0;
}
body.page-about .ab-hero__stat-n {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}
body.page-about .ab-hero__stat-l {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}
body.page-about .ab-hero__img {
  width: 600px;
  height: 600px;
  background: var(--bg-faint);
  border-radius: var(--radius-card-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  flex-shrink: 0;
}
body.page-about .ab-hero__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── S3 Business ── */
body.page-about .ab-business__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 52px;
}
body.page-about .ab-business__card {
  border-radius: var(--radius-card-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-white);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}
body.page-about .ab-business__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--text-hint);
}
body.page-about .ab-business__img {
  width: 100%;
  height: 210px;
  background: var(--bg-faint);
  overflow: hidden;
}
body.page-about .ab-business__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-img);
}
body.page-about .ab-business__card:hover .ab-business__img img {
  transform: scale(1.05);
}
body.page-about .ab-business__body {
  padding: 24px;
}
body.page-about .ab-business__h {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
body.page-about .ab-business__p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ── S4 Clients ── */
body.page-about .ab-clients__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
body.page-about .ab-clients__text {
  position: sticky;
  top: 100px;
}
body.page-about .ab-clients__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
body.page-about .ab-clients__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 24px 16px;
  background: var(--bg-faint);
  border-radius: var(--radius-card-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}
body.page-about .ab-clients__stat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
body.page-about .ab-clients__stat-n {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--text-primary);
  line-height: 1;
}
body.page-about .ab-clients__stat-l {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
body.page-about .ab-clients__img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 200px 140px;
  gap: 14px;
}
body.page-about .ab-clients__img-item {
  background: var(--bg-faint);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
body.page-about .ab-clients__img-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}
body.page-about .ab-clients__img-item--tall {
  grid-row: span 2;
}
body.page-about .ab-clients__img-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── S5 Why Us ── */
body.page-about .ab-why__header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 52px;
}
body.page-about .ab-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
body.page-about .ab-why__card {
  background: var(--bg-white);
  border-radius: var(--radius-card-lg);
  padding: 32px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
body.page-about .ab-why__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
  opacity: 0;
  transition: opacity var(--transition);
}
body.page-about .ab-why__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
body.page-about .ab-why__card:hover::before {
  opacity: 1;
}
body.page-about .ab-why__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
body.page-about .ab-why__icon svg {
  width: 24px;
  height: 24px;
}
body.page-about .ab-why__icon--purple { background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); }
body.page-about .ab-why__icon--teal { background: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%); }
body.page-about .ab-why__icon--green { background: linear-gradient(135deg, #059669 0%, #10b981 100%); }
body.page-about .ab-why__icon--amber { background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%); }
body.page-about .ab-why__icon--red { background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%); }
body.page-about .ab-why__icon--violet { background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%); }

body.page-about .ab-why__card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}
body.page-about .ab-why__card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── S6 Factory ── */
body.page-about .ab-factory__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 220px 180px;
  gap: 14px;
  margin-top: 52px;
}
body.page-about .ab-factory__img {
  background: var(--bg-faint);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: opacity var(--transition), transform var(--transition);
  cursor: pointer;
}
body.page-about .ab-factory__img:hover {
  opacity: 0.9;
  transform: scale(1.01);
}
body.page-about .ab-factory__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-img);
}
body.page-about .ab-factory__img:hover img {
  transform: scale(1.04);
}
body.page-about .ab-factory__img--tall {
  grid-row: span 2;
}

/* ── S7 Certs ── */
body.page-about .ab-certs__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 52px;
}
body.page-about .ab-certs__card {
  border-radius: var(--radius-card-lg);
  border: 1px solid var(--border);
  background: var(--bg-white);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  overflow: hidden;
}
body.page-about .ab-certs__card:hover {
  border-color: var(--text-hint);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
body.page-about .ab-certs__img {
  width: 100%;
  height: 135px;
  object-fit: contain;
  background: var(--bg-white);
  display: block;
  padding: 16px;
  transition: opacity var(--transition);
}
body.page-about .ab-certs__card:hover .ab-certs__img {
  opacity: 0.9;
}
body.page-about .ab-certs__body {
  padding: 20px 18px;
}
body.page-about .ab-certs__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
body.page-about .ab-certs__desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── S8 Direction (hidden by default) ── */
body.page-about .ab-direction__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 52px;
}
body.page-about .ab-direction__card {
  border-radius: var(--radius-card-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
body.page-about .ab-direction__card:hover {
  border-color: var(--text-hint);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
body.page-about .ab-direction__img {
  width: 100%;
  height: 210px;
  background: var(--bg-faint);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-hint);
  font-size: 12px;
  transition: opacity var(--transition);
}
body.page-about .ab-direction__card:hover .ab-direction__img {
  opacity: 0.85;
}
body.page-about .ab-direction__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-img);
}
body.page-about .ab-direction__card:hover .ab-direction__img img {
  transform: scale(1.04);
}
body.page-about .ab-direction__body {
  padding: 26px 24px;
  background: var(--bg-white);
}
body.page-about .ab-direction__tag {
  display: inline-block;
  font-size: 11px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
  font-weight: 500;
  transition: border-color var(--transition), background var(--transition);
}
body.page-about .ab-direction__card:hover .ab-direction__tag {
  border-color: var(--text-hint);
  background: var(--bg-faint);
}
body.page-about .ab-direction__h {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 9px;
}
body.page-about .ab-direction__p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ── S9 CTA ── */
body.page-about .ab-cta__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
body.page-about .ab-cta__content {
  padding: 40px 0;
}
body.page-about .ab-cta__h {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 16px;
}
body.page-about .ab-cta__p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}
body.page-about .ab-cta__btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
body.page-about .ab-cta__note {
  font-size: 13px;
  color: var(--text-muted);
}
body.page-about .ab-cta__img-wrap {
  border-radius: 20px;
  overflow: hidden;
  height: 400px;
  background: var(--bg-faint);
  box-shadow: var(--shadow-hover);
}
body.page-about .ab-cta__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Fade animation (scoped to about page) ── */
body.page-about .ab-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
body.page-about .ab-fade.ab-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive (spec §七 breakpoints: 1023px / 767px) ── */
@media (max-width: 1023px) {
  body.page-about .ab-hero__inner,
  body.page-about .ab-clients__layout,
  body.page-about .ab-cta__layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  body.page-about .ab-section {
    padding: var(--section-pad-sm) var(--container-pad-sm);
  }
  body.page-about .ab-divider {
    margin: 0 var(--container-pad-sm);
  }
  body.page-about .ab-hero__inner {
    padding: var(--section-pad-sm) var(--container-pad-sm);
  }
  body.page-about .ab-clients__text {
    position: static;
  }
  body.page-about .ab-business__grid,
  body.page-about .ab-why__grid,
  body.page-about .ab-direction__grid {
    grid-template-columns: 1fr;
  }
  body.page-about .ab-certs__grid,
  body.page-about .ab-factory__grid {
    grid-template-columns: 1fr 1fr;
  }
  body.page-about .ab-factory__grid {
    grid-template-rows: auto;
  }
  body.page-about .ab-factory__img--tall {
    grid-row: span 1;
  }
  body.page-about .ab-hero__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  body.page-about .ab-hero__img {
    width: 100%;
    height: auto;
    aspect-ratio: 1/1;
  }
  body.page-about .ab-cta__content {
    padding: 0;
  }
  body.page-about .ab-cta__img-wrap {
    height: 280px;
  }
}

@media (max-width: 767px) {
  body.page-about .ab-hero__title {
    font-size: 32px;
  }
  body.page-about .ab-section__title {
    font-size: 26px;
  }
  body.page-about .ab-certs__grid,
  body.page-about .ab-factory__grid {
    grid-template-columns: 1fr;
  }
  body.page-about .ab-clients__img-grid {
    grid-template-rows: 160px 120px;
  }
}