.page-about {
  --page-gold-soft: rgb(212 175 55 / 0.12);
  --page-blue-soft: rgb(0 229 255 / 0.12);
  background: var(--color-primary-bg);
  color: var(--color-text-primary);
  overflow-x: hidden;
}

/* Breadcrumbs */
.page-about .breadcrumbs {
  padding: 2rem 0 0;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .breadcrumbs li {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-accent-gold);
}

.page-about .breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-about .breadcrumbs a:hover {
  color: var(--color-accent-gold);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--color-text-primary);
}

/* Hero */
.page-about .about-hero {
  position: relative;
  padding: 3rem 0 3.5rem;
  border-bottom: 1px solid var(--color-border);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: -20%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--page-gold-soft), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero .section-label {
  display: inline-block;
  margin-bottom: 1.5rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--color-accent-gold);
  color: var(--color-accent-gold);
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .about-hero-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-headline);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.page-about .about-hero-lead {
  margin: 0 0 1.25rem;
  font-family: var(--font-body);
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-blue);
}

.page-about .about-hero-desc {
  max-width: 44em;
  margin: 0 0 2rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.page-about .about-hero-meta {
  display: grid;
  gap: 0;
  max-width: 36em;
  margin-bottom: 2.25rem;
}

.page-about .about-hero-meta .data-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--color-border);
  font-family: var(--font-body);
  font-size: 0.875rem;
}

.page-about .about-hero-meta .data-line span {
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-about .about-hero-meta .data-line strong {
  color: var(--color-text-primary);
  font-weight: 400;
}

.page-about .about-hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-about .about-hero-index a {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.page-about .about-hero-index a:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: translateY(-2px);
}

/* Chapter scaffold */
.page-about .about-chapter {
  position: relative;
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.page-about .about-chapter-head {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent-gold);
}

.page-about .about-chapter-head .section-label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

.page-about .about-chapter-head h2 {
  margin: 0;
  font-family: var(--font-headline);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.25;
}

/* Brand story */
.page-about .about-story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

.page-about .about-story-copy p {
  margin: 0 0 1.1rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.page-about .about-story-copy p:first-child::first-letter {
  float: left;
  margin: 0.08em 0.1em 0 0;
  font-family: var(--font-headline);
  font-size: 3.6em;
  line-height: 0.82;
  color: var(--color-accent-gold);
  text-shadow: 1px 1px 0 var(--color-accent-blue);
}

.page-about .about-story-copy a {
  color: var(--color-accent-blue);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-accent-blue);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.page-about .about-story-copy a:hover {
  color: var(--color-accent-gold);
  border-bottom-color: var(--color-accent-gold);
}

.page-about .about-story-stamp {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 2.5rem 1rem;
  border: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgb(255 255 255 / 0.02), transparent), var(--color-secondary-bg);
}

.page-about .about-story-year {
  font-family: var(--font-headline);
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-accent-gold);
}

.page-about .about-story-line {
  display: block;
  width: 48px;
  height: 2px;
  margin: 1.25rem 0;
  background: var(--color-accent-blue);
  box-shadow: 0 0 10px rgb(0 229 255 / 0.5);
}

.page-about .about-story-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.page-about .about-story-principles {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.page-about .about-story-principles h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  color: var(--color-accent-gold);
}

.page-about .about-story-principles ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-story-principles li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.4rem;
  border-bottom: 1px dashed var(--color-border);
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-about .about-story-principles li:last-child {
  border-bottom: 0;
}

.page-about .about-story-principles li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0.45rem;
  font-size: 0.7rem;
  color: var(--color-accent-blue);
}

/* Timeline */
.page-about .about-timeline {
  position: relative;
  margin: 0 0 2rem;
  padding-left: 32px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-gold) 0%, var(--color-accent-blue) 45%, var(--color-border) 100%);
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 26px;
  width: 10px;
  height: 10px;
  background: var(--color-accent-gold);
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgb(212 175 55 / 0.4);
}

.page-about .about-timeline-item--now::before {
  background: var(--color-accent-blue);
  box-shadow: 0 0 14px rgb(0 229 255 / 0.55);
}

.page-about .about-timeline-year {
  margin-bottom: 0.75rem;
  font-family: var(--font-headline);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-primary);
  text-shadow: 2px 2px 0 rgb(212 175 55 / 0.15);
}

.page-about .about-timeline-card {
  padding: 1.25rem 1.5rem;
  border-left: 2px solid var(--color-border);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.page-about .about-timeline-item:hover .about-timeline-card {
  border-left-color: var(--color-accent-gold);
  background-color: var(--color-elevated-bg);
}

.page-about .about-timeline-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.2rem;
  color: var(--color-accent-gold);
}

.page-about .about-timeline-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.page-about .about-timeline-item--now .about-timeline-card {
  border-left-color: var(--color-accent-blue);
  background: linear-gradient(180deg, rgb(0 229 255 / 0.05), transparent), var(--color-elevated-bg);
}

.page-about .about-timeline-item--now .about-timeline-card h3 {
  color: var(--color-accent-blue);
}

.page-about .about-timeline-image {
  border: 1px solid var(--color-border);
}

/* Data coverage */
.page-about .about-coverage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-coverage-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-stat-block {
  position: relative;
  padding: 1.5rem;
  overflow: hidden;
  border-top: 2px solid var(--color-accent-gold);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.page-about .about-stat-block:hover {
  border-top-color: var(--color-accent-blue);
  background-color: var(--color-elevated-bg);
}

.page-about .about-stat-block::after {
  content: "";
  position: absolute;
  right: -14px;
  top: -14px;
  width: 48px;
  height: 48px;
  border-top: 1px solid var(--page-gold-soft);
  border-right: 1px solid var(--page-gold-soft);
  transform: rotate(12deg);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-headline);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-primary);
}

.page-about .about-stat-unit {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

.page-about .about-stat-block p {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-about .about-coverage-visual {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-about .about-coverage-visual .media-frame {
  border: 1px solid var(--color-border);
}

.page-about .about-caption {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.page-about .about-coverage-note {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
}

.page-about .about-coverage-note .data-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--color-border);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.page-about .about-coverage-note .data-line:last-child {
  border-bottom: 0;
}

.page-about .about-coverage-note .data-line strong {
  color: var(--color-text-primary);
  font-weight: 400;
  text-align: right;
}

/* Technology */
.page-about .about-tech {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-tech-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-tech-list .card {
  padding: 1.5rem;
  border-left: 3px solid var(--color-accent-blue);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.page-about .about-tech-list .card:hover {
  border-left-color: var(--color-accent-gold);
  background-color: var(--color-elevated-bg);
}

.page-about .about-tech-list h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.page-about .about-tech-list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-about .about-method-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-method-list li {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-border);
  background: var(--color-secondary-bg);
}

.page-about .about-method-list strong {
  display: block;
  font-family: var(--font-headline);
  font-size: 1rem;
  color: var(--color-accent-gold);
}

.page-about .about-method-list span {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--color-text-secondary);
}

.page-about .about-tech-visual {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-about .about-tech-visual .media-frame {
  border: 1px solid var(--color-border);
}

/* Service commitment */
.page-about .about-commitment {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-about .about-commitment-card {
  position: relative;
  padding: 1.5rem;
  overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.page-about .about-commitment-card:hover {
  transform: translateY(-2px);
  border-top: 2px solid var(--color-accent-gold);
}

.page-about .about-commitment-step {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-headline);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--page-gold-soft);
}

.page-about .about-commitment-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.2rem;
  color: var(--color-text-primary);
}

.page-about .about-commitment-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-about .about-commitment-note {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-secondary-bg);
}

.page-about .about-commitment-note p {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.page-about .about-commitment-note ul {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.page-about .about-commitment-note li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1.4rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.page-about .about-commitment-note li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent-blue);
}

.page-about .about-commitment-note a {
  color: var(--color-accent-blue);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-accent-blue);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.page-about .about-commitment-note a:hover {
  color: var(--color-accent-gold);
  border-bottom-color: var(--color-accent-gold);
}

/* Media frames */
.page-about .media-frame {
  background: var(--color-secondary-bg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.page-about .media-frame:hover {
  border-color: var(--color-accent-blue);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* Desktop */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 4.5rem 0 4rem;
  }

  .page-about .about-hero-title {
    font-size: 3rem;
  }

  .page-about .about-hero-desc {
    font-size: 1.05rem;
  }

  .page-about .about-chapter {
    padding: 4.5rem 0;
  }

  .page-about .about-chapter-head h2 {
    font-size: 2.1rem;
  }

  .page-about .about-story-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }

  .page-about .about-timeline {
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 190px;
  }

  .page-about .about-timeline-item {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 2.5rem;
    margin-bottom: 2.75rem;
  }

  .page-about .about-timeline-item::before {
    left: 185px;
  }

  .page-about .about-timeline-year {
    margin-bottom: 0;
    font-size: 3.5rem;
    text-align: right;
  }

  .page-about .about-coverage {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-coverage-note {
    margin-top: 2.5rem;
  }

  .page-about .about-tech {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-method-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-commitment {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}