.page-about {
  background: var(--color-cloud);
  font-family: var(--font-body);
  color: var(--color-deep-blue);
  overflow-x: hidden;
}

.page-about__wrap {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.page-about__hero {
  position: relative;
  background: var(--color-deep-blue);
  color: var(--color-white);
  overflow: hidden;
  isolation: isolate;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-gold);
  z-index: 3;
}

.page-about__hero-media {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.page-about__hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 31, 68, 0.35) 0%, rgba(10, 31, 68, 0.82) 100%);
  z-index: 1;
}

.page-about__hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.page-about__hero .breadcrumb {
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.65);
}

.page-about__hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition);
}

.page-about__hero .breadcrumb a:hover,
.page-about__hero .breadcrumb a:focus-visible {
  color: var(--color-gold-light);
}

.page-about__hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  margin-bottom: 12px;
}

.page-about__hero h1 {
  font-family: var(--font-title);
  font-size: var(--size-h1);
  line-height: 1.2;
  margin: 0 0 14px;
  max-width: 18ch;
}

.page-about__hero-brand {
  color: var(--color-gold-light);
  text-shadow: 0 2px 24px rgba(212, 175, 55, 0.3);
}

.page-about__hero-lead {
  font-size: var(--size-body);
  line-height: 1.8;
  max-width: 760px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.88);
  border-left: 3px solid var(--color-gold);
  padding-left: 20px;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about__hero .btn--outline {
  border-color: rgba(255, 255, 255, 0.75);
  color: var(--color-white);
}

.page-about__hero .btn--outline:hover {
  border-color: var(--color-gold-light);
  background: rgba(255, 255, 255, 0.1);
}

.page-about__layout {
  display: grid;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 80px;
}

.page-about__toc {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  border-top: 3px solid var(--color-gold);
  align-self: start;
}

.page-about__toc-title {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-deep-blue);
  margin-bottom: 12px;
}

.page-about__toc-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0;
  margin: 0;
  list-style: none;
  scrollbar-width: thin;
}

.page-about__toc-list li {
  flex: 0 0 auto;
}

.page-about__toc-list a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-cloud);
  color: var(--color-deep-blue);
  text-decoration: none;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.page-about__toc-list a:hover,
.page-about__toc-list a:focus-visible {
  background: var(--gradient-gold);
  color: var(--color-deep-blue);
}

.page-about__toc-btn {
  display: none;
  margin-top: 20px;
  text-align: center;
}

.page-about__content {
  min-width: 0;
}

.page-about__section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.page-about__section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-gold);
  opacity: 0.65;
}

.page-about__section-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.page-about__section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-gold);
  color: var(--color-deep-blue);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  flex: 0 0 auto;
}

.page-about__section-head h2 {
  font-family: var(--font-title);
  font-size: var(--size-h2);
  line-height: 1.2;
  margin: 0;
}

.page-about__section-lead {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-deep-blue);
  font-weight: 600;
  margin-bottom: 16px;
  max-width: 56ch;
}

.page-about__section p {
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-about__section p:last-child {
  margin-bottom: 0;
}

.page-about__position-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.page-about__position-card {
  background: var(--color-cloud);
  border-radius: var(--radius-md);
  padding: 24px;
  border-left: 3px solid var(--color-gold);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about__position-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.page-about__position-index {
  font-family: var(--font-mono);
  font-weight: 700;
  color: rgba(212, 175, 55, 0.55);
  font-size: 0.85rem;
}

.page-about__position-card h3 {
  font-family: var(--font-title);
  font-size: 1.15rem;
  margin: 8px 0 8px;
}

.page-about__position-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-fog);
}

.page-about__timeline-wrap {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-about__timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold-light), var(--color-gold), rgba(212, 175, 55, 0.2));
}

.page-about__timeline-item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 28px;
}

.page-about__timeline-item:last-child {
  padding-bottom: 0;
}

.page-about__timeline-dot {
  position: absolute;
  left: 9px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.2);
}

.page-about__timeline-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-gold);
  background: rgba(212, 175, 55, 0.1);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 8px;
}

.page-about__timeline-card h3 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  margin: 0 0 6px;
}

.page-about__timeline-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-fog);
}

.page-about__timeline-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  box-shadow: var(--shadow-card);
}

.page-about__section--scale {
  background: radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.16), transparent 320px), var(--color-deep-blue);
  color: var(--color-white);
}

.page-about__section--scale::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-about__section--scale .page-about__section-head h2,
.page-about__section--scale .page-about__section-lead {
  color: var(--color-white);
}

.page-about__section--scale .page-about__section-lead {
  color: rgba(255, 255, 255, 0.9);
}

.page-about__stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.page-about__stat-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
}

.page-about__stat-card--featured {
  border-color: var(--color-gold);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2.2rem;
  color: var(--color-gold-light);
  line-height: 1.1;
}

.page-about__stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.78);
}

.page-about__scale-detail {
  display: grid;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.page-about__scale-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-about__scale-copy h3 {
  font-family: var(--font-title);
  color: var(--color-gold-light);
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.page-about__scale-copy p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-about__scale-copy .btn--outline {
  border-color: var(--color-gold-light);
  color: var(--color-gold-light);
  margin-top: 8px;
}

.page-about__scale-copy .btn--outline:hover {
  background: var(--color-gold-light);
  color: var(--color-deep-blue);
}

.page-about__cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about__cert-card {
  background: var(--color-cloud);
  border-radius: var(--radius-md);
  padding: 24px;
  border-top: 3px solid var(--color-gold);
}

.page-about__cert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-deep-blue);
  color: var(--color-gold-light);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.page-about__cert-card h3 {
  font-family: var(--font-title);
  margin: 0 0 8px;
}

.page-about__cert-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-fog);
}

.page-about__cert-icp {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-deep-blue);
  background: rgba(212, 175, 55, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

.page-about__eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.page-about__eco-card {
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(212, 175, 55, 0.03));
  border: 1px solid rgba(212, 175, 55, 0.25);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about__eco-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.page-about__eco-card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 1px solid rgba(212, 175, 55, 0.25);
}

.page-about__eco-mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-deep-blue);
  background: var(--gradient-gold);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 12px;
}

.page-about__eco-card h3 {
  font-family: var(--font-title);
  margin: 0 0 8px;
}

.page-about__eco-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-fog);
}

.page-about__eco-cta {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--color-cloud);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-gold);
  font-size: 0.95rem;
}

.page-about__eco-cta a {
  color: var(--color-gold);
  font-weight: 600;
  text-decoration: none;
}

.page-about__eco-cta a:hover {
  text-decoration: underline;
}

@media (min-width: 600px) {
  .page-about__contents-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about__position-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .page-about__eco-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .page-about__hero-media {
    height: 300px;
  }

  .page-about__hero-inner {
    padding-top: 48px;
    padding-bottom: 64px;
  }

  .page-about__scale-detail {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-about__timeline-wrap {
    grid-template-columns: 1fr 260px;
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-about__wrap {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-about__layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
    padding-bottom: 100px;
  }

  .page-about__toc {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    padding: 24px;
  }

  .page-about__toc-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-about__toc-list a {
    display: block;
    white-space: normal;
    background: transparent;
    padding: 10px 16px 10px 20px;
    border-left: 3px solid transparent;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
  }

  .page-about__toc-list a:hover,
  .page-about__toc-list a:focus-visible {
    background: rgba(212, 175, 55, 0.12);
    border-left-color: var(--color-gold);
    color: var(--color-gold);
  }

  .page-about__toc-btn {
    display: block;
  }

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

  .page-about__stats-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-about__section {
    padding: 40px 36px;
    margin-bottom: 32px;
  }
}