.page--about .nv{
  background: #000 !important;
  border-bottom: 1px solid rgba(255,255,255,.12) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

/* ===== Hero ===== */
.ab-hero{
  position: relative;
  min-height: clamp(420px, 62vh, 640px);
  overflow: hidden;
  background: #07080a;
  display:flex;
  align-items: center;
}

.ab-hero-bg{ position:absolute; inset:0; }
.ab-hero-img{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit: cover;
  display:block;
  filter: saturate(110%) contrast(105%);
}

.ab-hero-dim{
  position:absolute; inset:0;
  background: radial-gradient(72% 62% at 50% 40%, rgba(0,0,0,.18), rgba(0,0,0,.70));
}

.ab-hero-grain{
  position:absolute; inset:0;
  pointer-events:none;
  opacity: .16;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  background-size: 220px 220px;
  mix-blend-mode: overlay;
}

.ab-hero-inner{
  position: relative;
  z-index: 1;
  width: min(980px, calc(100% - 48px));
  margin: 0 auto;
  text-align: center;
  padding: 78px 0 64px;
}

.ab-hero-kicker{
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.72);
  font-weight: 700;
  margin-bottom: 12px;
}

.ab-hero-title{
  margin: 0 0 12px;
  font-size: clamp(38px, 4.8vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: rgba(255,255,255,.92);
}

.ab-hero-sub{
  margin: 0 auto;
  max-width: 84ch;
  color: rgba(255,255,255,.78);
}

/* ===== Layout ===== */
.ab-wrap{
  width: min(100% - 48px, var(--page-max, 1180px));
  margin: 0 auto;
  padding: 56px 0 0;
}

.ab-section{ padding: 18px 0 0; }
.ab-section + .ab-section{ padding-top: 34px; }

.ab-head{ margin: 0 auto 16px; }
.ab-head--center{ text-align: center; }

.ab-h2{
  margin: 0 0 12px;
  font-size: clamp(22px, 2.6vw, 28px);
  letter-spacing: -0.01em;
  color: rgba(15,23,42,.92);
}

.ab-lead{
  margin: 0 auto;
  max-width: 100ch;
  color: rgba(15,23,42,.78);
}

/* ===== Overview ===== */
.ab-intro{ margin-top: -6px; }

.ab-intro-textblock{
  text-align: center;
  max-width: 100ch;
  margin: 0 auto;
}

.ab-intro-kicker{
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(15,23,42,.52);
  font-weight: 800;
  margin-bottom: 10px;
}

.ab-intro-text{
  margin: 0 auto;
  max-width: 98ch;
  color: rgba(15,23,42,.78);
}

.ab-inline-link{
  color: rgba(15,23,42,.90);
  text-decoration: none;
  border-bottom: 1px solid rgba(15,23,42,.22);
}
.ab-inline-link:hover{ border-bottom-color: rgba(15,23,42,.34); }

/* mobile-only card */
.ab-intro-card{
  border: 0;
  background: transparent;
  padding: 0;
  box-shadow: none;
  border-radius: 0;
}

/* divider: only PC */
.ab-divider{
  display: none;
  width: min(100% - 0px, 980px);
  height: 1px;
  margin: 34px auto 26px;
  background: rgba(15,23,42,.10);
}

.ab-head--mechanism{ margin-top: 22px; margin-bottom: 16px; }

/* ===== Media ===== */
.ab-heroimg{
  margin-top: 18px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.86);
}

.ab-heroimg-img{
  width: 100%;
  height: 320px;
  display:block;
  object-fit: cover;
}

/* ===== Two columns ===== */
.ab-grid2{
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: stretch;
}

.ab-col{
  border: 1px solid rgba(15,23,42,.10);
  border-radius: 16px;
  background: rgba(255,255,255,.88);
  padding: 20px;
  box-shadow: 0 14px 34px rgba(15,23,42,.06);
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* ===== Pills ===== */
.ab-pillstack{
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.ab-pill{
  border-radius: 14px;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.92);
  padding: 12px 14px;
}

.ab-pill-title{
  font-weight: 700;
  letter-spacing: -0.01em;
  color: rgba(15,23,42,.92);
}

.ab-pill-desc{
  margin-top: 6px;
  color: rgba(15,23,42,.72);
}

/* ===== Info cards ===== */
.ab-cards{
  margin: 0 auto;
  max-width: 980px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.ab-card{
  border-radius: 16px;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.88);
  padding: 18px;
  box-shadow: 0 14px 34px rgba(15,23,42,.06);
}

.ab-card-badge{
  display:inline-flex;
  align-items:center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,.14);
  background: rgba(255,255,255,.70);
  font-size: 12px;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: rgba(15,23,42,.70);
}

.ab-card-title{
  margin-top: 12px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: rgba(15,23,42,.92);
}

.ab-card-desc{
  margin-top: 8px;
  color: rgba(15,23,42,.72);
  max-width: 90ch;
}

/* ===== Responsive ===== */
@media (max-width: 820px){
  .ab-grid2{ grid-template-columns: 1fr; }
  .ab-cards{ grid-template-columns: 1fr; }
  .ab-heroimg-img{ height: 260px; }
}

@media (max-width: 720px){
  .ab-hero-inner{
    text-align: left;
    width: calc(100% - 36px);
    padding: 66px 0 54px;
  }
  .ab-hero-sub{ margin-left: 0; }

  .ab-wrap{
    width: calc(100% - 36px);
    padding-top: 44px;
  }

  .ab-head--center{ text-align: left; }
  .ab-lead{ margin-left: 0; }

  .ab-intro-textblock{ text-align: left; margin: 0; }
  .ab-intro-text{ margin-left: 0; }

  .ab-head--mechanism{ margin-top: 18px; margin-bottom: 12px; }

  .ab-heroimg-img{ height: 220px; }

  /* overview card only on mobile */
  .ab-intro-card{
    border: 1px solid rgba(15,23,42,.10);
    background: rgba(255,255,255,.88);
    padding: 16px 16px 14px;
    border-radius: 16px;
    box-shadow: 0 14px 34px rgba(15,23,42,.06);
  }
}

/* divider only on PC */
@media (min-width: 721px){
  .ab-divider{ display:block; }
}