.page-about {
  --about-card-bg: linear-gradient(145deg, #0F2746, #1B3A5C);
  --about-green-soft: rgba(0, 255, 136, 0.12);
  --about-orange-soft: rgba(255, 127, 0, 0.14);
  --about-mono: 'JetBrains Mono', 'Roboto Mono', monospace;
  position: relative;
  color: var(--color-text);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .about-hero__kicker {
  font-family: var(--about-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-green);
  margin: 0 0 8px;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 16px;
  max-width: 680px;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__meta-item {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  min-width: 120px;
  flex: 1 1 auto;
}

.page-about .about-hero__meta-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin: 0 0 4px;
  font-family: var(--font-body);
}

.page-about .about-hero__meta-num {
  font-family: var(--about-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-green);
  margin: 0;
  line-height: 1.2;
}

.page-about .about-body {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 40px 0 80px;
}

.page-about .about-index {
  display: none;
}

.page-about .about-main {
  flex: 1;
  min-width: 0;
}

.page-about .about-section {
  margin-bottom: 64px;
  scroll-margin-top: 80px;
}

.page-about .section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 24px;
}

.page-about .section__num {
  font-family: var(--about-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-green);
  background: var(--about-green-soft);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  border: 1px solid rgba(0, 255, 136, 0.2);
}

.page-about .section__title {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 900;
  margin: 0;
  letter-spacing: -0.02em;
}

.page-about .about-story__grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .about-story__text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.page-about .about-story__text p:first-of-type {
  color: var(--color-text);
  font-size: 17px;
}

.page-about .about-story__quote {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text);
  border-left: 3px solid var(--color-green);
  padding-left: 16px;
  margin: 24px 0 28px;
  line-height: 1.5;
}

.page-about .about-story__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .stat-card {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-about .stat-card--green {
  border-left: 4px solid var(--color-green);
}

.page-about .stat-card--orange {
  border-left: 4px solid var(--color-orange);
}

.page-about .stat-card__num {
  font-family: var(--about-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
}

.page-about .stat-card--green .stat-card__num {
  color: var(--color-green);
}

.page-about .stat-card--orange .stat-card__num {
  color: var(--color-orange);
}

.page-about .stat-card__label {
  font-size: 14px;
  color: var(--color-text-muted);
}

.page-about .about-timeline__track {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  position: relative;
}

.page-about .about-timeline__node {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: border-color var(--transition);
}

.page-about .about-timeline__node[open] {
  border-color: rgba(0, 255, 136, 0.4);
}

.page-about .about-timeline__node summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-family: var(--font-body);
}

.page-about .about-timeline__node summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline__node summary::before {
  content: '+';
  font-family: var(--about-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-green);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--about-green-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.page-about .about-timeline__node[open] summary::before {
  content: '−';
  background: rgba(0, 255, 136, 0.22);
}

.page-about .about-timeline__year {
  font-family: var(--about-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-green);
  background: var(--about-green-soft);
  border-radius: var(--radius-pill);
  padding: 2px 10px;
}

.page-about .about-timeline__title {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 800;
  color: var(--color-text);
}

.page-about .about-timeline__detail {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-about .about-timeline__node--end .about-timeline__year {
  color: var(--color-orange);
  background: var(--about-orange-soft);
}

.page-about .about-timeline__media .media-wrap {
  margin-bottom: 10px;
}

.page-about .about-capability__grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .about-capability__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .capability-card {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 120px;
  justify-content: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .capability-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-about .capability-card--accent {
  border-left: 4px solid var(--color-green);
}

.page-about .capability-card--orange {
  border-left: 4px solid var(--color-orange);
}

.page-about .capability-card__num {
  font-family: var(--about-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
}

.page-about .capability-card--accent .capability-card__num {
  color: var(--color-green);
}

.page-about .capability-card--orange .capability-card__num {
  color: var(--color-orange);
}

.page-about .capability-card__suffix {
  font-family: var(--about-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-left: 2px;
}

.page-about .capability-card__label {
  font-size: 14px;
  color: var(--color-text-muted);
}

.page-about .about-capability__media {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-capability__media .media-wrap {
  border-radius: var(--radius-lg);
}

.page-about .capability-note {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .capability-note li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-muted);
  padding: 12px 16px;
  background: rgba(15, 39, 70, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  position: relative;
  padding-left: 36px;
}

.page-about .capability-note li::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

.page-about .about-team__grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .about-team__media .media-wrap--square {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
}

.page-about .about-team__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin: 0 0 24px;
}

.page-about .skill-bars {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .skill-bar__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.page-about .skill-bar__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.page-about .skill-bar__value {
  font-family: var(--about-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-green);
}

.page-about .skill-bar__track {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.page-about .skill-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #1B3A5C, #00FF88);
  border-radius: var(--radius-pill);
  transition: width 0.6s ease;
}

.page-about .skill-bar__fill--green {
  background: linear-gradient(90deg, #00A85A, #00FF88);
}

.page-about .skill-bar__fill--blue {
  background: linear-gradient(90deg, #1B3A5C, #4A90D9);
}

.page-about .skill-bar__fill--orange {
  background: linear-gradient(90deg, #B35500, #FF7F00);
}

.page-about .about-ecosystem__grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .about-ecosystem__topology {
  position: relative;
  max-width: 440px;
  width: 100%;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  background: rgba(15, 39, 70, 0.25);
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

.page-about .topology-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-about .topo-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(145deg, #0F2746, #1B3A5C);
  border: 2px solid rgba(0, 255, 136, 0.5);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  text-align: center;
  z-index: 1;
  min-width: 96px;
  box-shadow: 0 0 24px rgba(0, 255, 136, 0.15);
}

.page-about .topo-core__name {
  display: block;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 900;
  color: var(--color-text);
}

.page-about .topo-core__tag {
  display: block;
  font-size: 12px;
  color: var(--color-green);
  margin-top: 4px;
  font-family: var(--about-mono);
}

.page-about .topo-node {
  position: absolute;
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  text-align: center;
  font-size: 12px;
  line-height: 1.4;
  z-index: 1;
  min-width: 76px;
}

.page-about .topo-node__name {
  display: block;
  color: var(--color-text);
  font-weight: 600;
}

.page-about .topo-node__count {
  display: block;
  color: var(--color-green);
  font-family: var(--about-mono);
  font-size: 12px;
  margin-top: 2px;
}

.page-about .topo-node--a {
  top: 14%;
  left: 8%;
}

.page-about .topo-node--b {
  top: 10%;
  right: 8%;
}

.page-about .topo-node--b .topo-node__count {
  color: var(--color-orange);
}

.page-about .topo-node--c {
  bottom: 14%;
  right: 10%;
}

.page-about .topo-node--d {
  bottom: 12%;
  left: 10%;
}

.page-about .about-ecosystem__text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.page-about .about-honor__grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .honor-card {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .honor-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-about .honor-card--primary {
  border-left: 4px solid var(--color-orange);
  background: linear-gradient(145deg, rgba(255, 127, 0, 0.1), rgba(15, 39, 70, 0.6) 70%);
}

.page-about .honor-card__badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-orange);
  background: var(--about-orange-soft);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 14px;
  font-family: var(--about-mono);
}

.page-about .honor-card:not(.honor-card--primary) .honor-card__badge {
  color: var(--color-green);
  background: var(--about-green-soft);
}

.page-about .honor-card__title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  margin: 0 0 10px;
}

.page-about .honor-card__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0;
}

.page-about .about-honor__cta {
  margin-top: 28px;
  padding: 24px 26px;
  background: rgba(15, 39, 70, 0.5);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.page-about .about-honor__cta p {
  font-size: 15px;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

.page-about .media-wrap {
  overflow: hidden;
}

.page-about .media-wrap img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: inherit;
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 48px 0 40px;
  }

  .page-about .about-hero__grid {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
  }

  .page-about .about-hero__main {
    flex: 1 1 60%;
  }

  .page-about .about-hero__meta {
    flex: 1 1 40%;
    max-width: 380px;
  }

  .page-about .about-hero__title {
    font-size: 40px;
  }

  .page-about .about-story__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
  }

  .page-about .about-story__stats {
    grid-template-columns: 1fr;
  }

  .page-about .about-capability__grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 28px;
    align-items: start;
  }

  .page-about .about-team__grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-ecosystem__grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    align-items: center;
  }

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

  .page-about .honor-card--primary {
    grid-row: span 1;
  }

  .page-about .about-honor__cta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    display: flex;
    flex-direction: row;
    gap: 48px;
    padding: 56px 0 96px;
  }

  .page-about .about-index {
    display: block;
    flex-shrink: 0;
    width: 180px;
    position: sticky;
    top: calc(var(--topbar-height) + 24px);
    align-self: flex-start;
    padding-top: 8px;
  }

  .page-about .about-index__label {
    font-family: var(--about-mono);
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--color-text-muted);
    margin: 0 0 14px;
  }

  .page-about .about-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .page-about .about-index__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
    font-family: var(--font-body);
  }

  .page-about .about-index__link:hover {
    background: var(--about-green-soft);
    color: var(--color-text);
  }

  .page-about .about-index__num {
    font-family: var(--about-mono);
    font-size: 12px;
    color: var(--color-green);
  }

  .page-about .about-index__note {
    font-size: 12px;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin: 20px 0 0;
    padding: 12px 14px;
    border-left: 2px solid rgba(255, 255, 255, 0.2);
  }

  .page-about .about-timeline__track {
    flex-direction: row;
    gap: 14px;
    padding-top: 0;
  }

  .page-about .about-timeline__node {
    flex: 1;
    min-width: 0;
    padding: 16px 16px 14px;
  }

  .page-about .about-timeline__node summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-about .about-timeline__node summary::before {
    position: absolute;
    top: -30px;
    left: 18px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-green);
    box-shadow: 0 0 0 4px rgba(0, 255, 136, 0.2);
  }

  .page-about .about-timeline__node[open] summary::before {
    background: var(--color-green);
    box-shadow: 0 0 0 5px rgba(0, 255, 136, 0.3);
  }

  .page-about .about-timeline__node--end summary::before {
    background: var(--color-orange);
    box-shadow: 0 0 0 4px rgba(255, 127, 0, 0.2);
  }

  .page-about .about-timeline__node--end[open] summary::before {
    background: var(--color-orange);
    box-shadow: 0 0 0 5px rgba(255, 127, 0, 0.3);
  }

  .page-about .about-timeline__track {
    margin-top: 36px;
  }

  .page-about .about-timeline__node .about-timeline__detail {
    display: none;
  }

  .page-about .about-timeline__node[open] .about-timeline__detail {
    display: block;
  }

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

  .page-about .about-honor__grid {
    grid-template-columns: 1.1fr 0.9fr 0.9fr;
  }
}