/* === HERO === */
.ab-hero {
  background: var(--bg);
  min-height: 92vh;
  padding-top: 72px;
  position: relative;
}

.ab-hero-heading {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--dark);
}

.ab-hero-heading em {
  font-style: normal;
  background: linear-gradient(135deg, #a35a2a 0%, #c9904f 50%, #6b3a1a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ab-hero-sub {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  color: var(--muted);
  font-weight: 300;
  max-width: 60ch;
  line-height: 1.75;
}

.ab-scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-sans);
  font-size: 0.94rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  animation: abBounce 2.4s ease-in-out infinite;
}

@keyframes abBounce {

  0%,
  100% {
    transform: translate(-50%, 0);
    opacity: 0.6;
  }

  50% {
    transform: translate(-50%, 6px);
    opacity: 1;
  }
}

/* === JOURNEY TIMELINE === */
.ab-journey {
  background: var(--bg);
  padding: 6rem 0;
}

.ab-journey-sticky {
  position: sticky;
  top: 110px;
  padding-right: 2rem;
}

.ab-journey-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  font-weight: 400;
  color: var(--dark);
  line-height: 1.2;
}

.ab-journey-sub {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.7;
  max-width: 36ch;
}

.ab-timeline {
  border-left: 1px solid rgba(43, 24, 10, 0.15);
  padding-left: 2.2rem;
}

.ab-tl-item {
  position: relative;
  padding-bottom: 3.2rem;
}

.ab-tl-item:last-child {
  padding-bottom: 0;
}

.ab-tl-item::before {
  content: '';
  position: absolute;
  left: -2.45rem;
  top: 0.4rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--muted);
}

.ab-tl-item--current::before {
  background: var(--dark);
  border-color: var(--dark);
}

.ab-tl-year {
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
  display: block;
  margin-bottom: 0.5rem;
}

.ab-tl-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 400;
  color: var(--dark);
  margin-bottom: 0.6rem;
}

.ab-tl-desc {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.75;
  max-width: 52ch;
}

/* === TECH EVOLUTION STRIP === */
.ab-stack {
  background: #0e0e0e;
  padding: 6rem 0;
}

.ab-stack-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.2vw, 2.7rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
}

.ab-stack-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.1rem;
  padding: 2.2rem 1.8rem;
  height: 100%;
  transition: background 0.35s ease, transform 0.35s ease;
}

.ab-stack-card:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-4px);
}

.ab-stack-num {
  font-family: var(--font-sans);
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 1.2rem;
}

.ab-stack-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.7rem;
}

.ab-stack-desc {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 300;
  line-height: 1.7;
}

/* === MANIFESTO === */
.ab-manifesto {
  background: var(--bg);
  min-height: 70vh;
  padding: 5rem 0;
}

.ab-manifesto-text {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  color: var(--muted);
  line-height: 1.5;
}

.ab-manifesto-highlight {
  display: block;
  margin-top: 1rem;
  color: var(--dark);
}

@media (max-width: 991.98px) {
  .ab-journey-sticky {
    position: static;
    padding-right: 0;
    margin-bottom: 3rem;
  }

  .ab-hero {
    min-height: auto;
    padding-bottom: 4rem;
  }
}