.page-about {
  --page-about-hero-bg: #0055FF;
  --page-about-chapter-brand-bg: #FFFFFF;
  --page-about-chapter-value-bg: #F5F7FA;
  --page-about-chapter-local-bg: #FF6B35;
  --page-about-chapter-vision-bg: #1A1A1A;
  --page-about-chapter-brand-accent: #0055FF;
  --page-about-chapter-value-accent: #1A1A1A;
  --page-about-chapter-local-accent: #FFFFFF;
  --page-about-chapter-vision-accent: #FF6B35;
  --page-about-note-rotate: -90deg;
  --page-about-chapter-gap: 0;
  display: block;
  width: 100%;
  overflow-x: hidden;
}

/* ===== Hero Section ===== */
.page-about__hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--page-about-hero-bg);
  overflow: hidden;
}

.page-about__hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(255,255,255,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(255,107,53,0.15) 0%, transparent 60%),
    linear-gradient(135deg, #0033AA 0%, #0055FF 50%, #0066FF 100%);
  z-index: 1;
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.page-about__hero-number {
  font-family: var(--font-nav);
  font-weight: 700;
  font-size: var(--fs-tiny);
  letter-spacing: 4px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.page-about__hero-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 1.05;
  color: var(--color-text-on-primary);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

.page-about__hero-subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: rgba(255,255,255,0.75);
  margin: 0 0 var(--space-2xl);
  letter-spacing: 1px;
}

.page-about__hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  animation: page-about-scroll-bounce 2.5s ease-in-out infinite;
}

.page-about__scroll-label {
  font-family: var(--font-nav);
  font-weight: 600;
  font-size: var(--fs-tiny);
  letter-spacing: 2px;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
}

.page-about__scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
}

@keyframes page-about-scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ===== Chapter Base ===== */
.page-about__chapter {
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}

.page-about__chapter-inner {
  position: relative;
  z-index: 2;
}

.page-about__chapter-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(3rem, 10vw, 6rem);
  line-height: 1;
  color: currentColor;
  opacity: 0.06;
  position: absolute;
  top: -0.15em;
  left: 0;
  pointer-events: none;
  user-select: none;
}

.page-about__chapter-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: relative;
}

.page-about__chapter-text {
  position: relative;
}

.page-about__chapter-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: var(--fs-h2);
  line-height: var(--lh-heading);
  margin: 0 0 var(--space-md);
}

.page-about__chapter-paragraph {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  margin: 0 0 var(--space-md);
  max-width: 640px;
}

.page-about__chapter-paragraph:last-of-type {
  margin-bottom: 0;
}

.page-about__chapter-note {
  font-family: var(--font-nav);
  font-weight: 600;
  font-size: var(--fs-tiny);
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  position: absolute;
  right: calc(100% + var(--space-md));
  top: 0.2em;
  white-space: nowrap;
  opacity: 0.7;
}

.page-about__chapter-visual {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

.page-about__chapter-visual--center {
  align-self: center;
}

.page-about__visual-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: attr(width) / attr(height);
}

/* ===== Chapter 1: Brand (Blue accent) ===== */
.page-about__chapter--brand {
  background: var(--page-about-chapter-brand-bg);
  color: var(--color-text);
}

.page-about__chapter--brand .page-about__chapter-title {
  color: var(--page-about-chapter-brand-accent);
}

.page-about__chapter--brand .page-about__chapter-note {
  color: var(--page-about-chapter-brand-accent);
  opacity: 0.6;
}

/* ===== Chapter 2: Value (Dark accent) ===== */
.page-about__chapter--value {
  background: var(--page-about-chapter-value-bg);
  color: var(--color-text);
}

.page-about__chapter--value .page-about__chapter-title {
  color: var(--page-about-chapter-value-accent);
}

.page-about__chapter--value .page-about__chapter-note {
  color: var(--page-about-chapter-value-accent);
  opacity: 0.5;
}

/* ===== Chapter 3: Local (Orange accent) ===== */
.page-about__chapter--local {
  background: var(--page-about-chapter-local-bg);
  color: var(--color-text-on-accent);
}

.page-about__chapter--local .page-about__chapter-title {
  color: var(--page-about-chapter-local-accent);
}

.page-about__chapter--local .page-about__chapter-paragraph {
  color: rgba(255,255,255,0.92);
}

.page-about__chapter--local .page-about__chapter-note {
  color: var(--page-about-chapter-local-accent);
  opacity: 0.7;
}

.page-about__chapter--local .page-about__chapter-visual {
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

/* ===== Chapter 4: Vision (Dark bg) ===== */
.page-about__chapter--vision {
  background: var(--page-about-chapter-vision-bg);
  color: var(--color-text-on-dark);
}

.page-about__chapter--vision .page-about__chapter-title {
  color: var(--page-about-chapter-vision-accent);
}

.page-about__chapter--vision .page-about__chapter-paragraph {
  color: rgba(238,238,238,0.9);
}

.page-about__chapter--vision .page-about__chapter-note {
  color: var(--page-about-chapter-vision-accent);
  opacity: 0.7;
}

.page-about__chapter-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.page-about__cta-link {
  font-size: var(--fs-small);
  padding: 0.75em 2em;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.page-about__cta-link--outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--color-text-on-dark);
}

.page-about__cta-link--outline:hover,
.page-about__cta-link--outline:focus-visible {
  border-color: var(--color-accent);
  background: rgba(255,107,53,0.1);
  color: var(--color-accent);
}

/* ===== Container ===== */
.page-about .container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ===== Media Query: Tablet & Desktop ===== */
@media (min-width: 768px) {
  .page-about__hero {
    min-height: 80vh;
  }

  .page-about__hero-title {
    font-size: clamp(3.5rem, 7vw, 5.5rem);
  }

  .page-about__chapter {
    padding: var(--space-2xl) 0;
  }

  .page-about__chapter-content {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2xl);
  }

  .page-about__chapter-text {
    flex: 1 1 55%;
  }

  .page-about__chapter-visual {
    flex: 1 1 40%;
    max-width: 500px;
  }

  .page-about__chapter-visual--center {
    flex: 1 1 50%;
    max-width: 600px;
  }

  .page-about__chapter-number {
    font-size: clamp(4rem, 8vw, 8rem);
    top: -0.2em;
  }

  .page-about__chapter-title {
    font-size: var(--fs-h1);
  }

  .page-about__chapter-paragraph {
    font-size: 1.0625rem;
  }

  .page-about__chapter--local .page-about__chapter-content {
    flex-direction: row-reverse;
  }

  .page-about__chapter--vision .page-about__chapter-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-about__chapter--vision .page-about__chapter-text {
    flex: 1 1 100%;
    max-width: 800px;
  }

  .page-about__chapter-cta {
    margin-top: var(--space-xl);
  }

  .page-about__chapter-note {
    position: static;
    writing-mode: horizontal-tb;
    display: inline-block;
    margin-bottom: var(--space-sm);
    font-size: var(--fs-small);
    opacity: 0.6;
    letter-spacing: 2px;
  }
}

@media (min-width: 1024px) {
  .page-about__chapter {
    padding: var(--space-2xl) 0;
  }

  .page-about__chapter-content {
    gap: var(--space-2xl);
  }

  .page-about__chapter-text {
    flex: 1 1 50%;
  }

  .page-about__chapter-visual {
    flex: 1 1 45%;
    max-width: 550px;
  }

  .page-about__chapter--vision .page-about__chapter-text {
    max-width: 700px;
  }

  .page-about__chapter-number {
    font-size: 8rem;
    top: -0.25em;
    left: -0.05em;
  }
}

/* ===== Hover interactions on visual ===== */
.page-about__chapter-visual {
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.page-about__chapter-visual:hover {
  box-shadow: 0 12px 40px rgba(0,85,255,0.18);
  transform: translateY(-4px);
}

.page-about__chapter--local .page-about__chapter-visual:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}

.page-about__chapter--vision .page-about__chapter-visual:hover {
  box-shadow: 0 12px 40px rgba(255,107,53,0.2);
}

/* ===== Focus states ===== */
.page-about__cta-link:focus-visible,
.page-about__chapter a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}