.page-about {
  --about-grid-dim: rgba(201, 247, 58, 0.06);
  --about-body-text: rgba(244, 247, 245, 0.78);
  --about-paper-ink: #102A31;
  position: relative;
  z-index: 0;
  background-color: var(--primary-deep-cyan);
  color: var(--paper);
  overflow-x: hidden;
  padding-bottom: 48px;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--about-grid-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-dim) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 24px 0;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .breadcrumb li {
  font-size: 14px;
  color: var(--muted);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--accent-fluorescent-green);
  border-color: var(--accent-fluorescent-green);
}

.page-about .breadcrumb li[aria-current="page"] {
  color: var(--accent-fluorescent-green);
}

.page-about .about-cover {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 24px 88px;
}

.page-about .about-cover .section-label {
  margin: 0 0 20px;
  font-family: var(--font-editorial);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--accent-fluorescent-green);
  text-transform: uppercase;
}

.page-about .about-cover h1 {
  position: relative;
  margin: 0 0 32px;
  padding-bottom: 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--paper);
  max-width: 780px;
}

.page-about .about-cover h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 6px;
  border-radius: 4px;
  background: var(--accent-fluorescent-green);
  transform: skewX(-24deg);
}

.page-about .about-lead {
  max-width: 58ch;
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 19px;
  line-height: 1.75;
  color: var(--about-body-text);
}

.page-about .about-cover-grid {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .about-cover-preview {
  background: rgba(12, 64, 80, 0.42);
  border-left: 3px solid var(--accent-fluorescent-green);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 24px 24px;
  max-width: 420px;
}

.page-about .about-cover-preview-label {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-cover-preview-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-cover-preview-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 4px;
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  border-bottom: 1px solid rgba(201, 247, 58, 0.16);
  transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.page-about .about-cover-preview-list a:hover {
  background: rgba(201, 247, 58, 0.12);
  color: var(--accent-fluorescent-green);
  padding-left: 10px;
}

.page-about .about-cover-preview-list .mono-num {
  color: var(--accent-fluorescent-green);
  font-size: 13px;
}

.page-about .about-layout {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-about .section-nav {
  margin-bottom: 24px;
  padding: 16px 0;
  border-top: 1px solid rgba(201, 247, 58, 0.18);
  border-bottom: 1px solid rgba(201, 247, 58, 0.18);
  background: rgba(6, 42, 51, 0.88);
}

.page-about .section-nav-title {
  margin: 0 0 10px;
  padding: 0 8px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .section-nav ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .section-nav a {
  display: inline-block;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(201, 247, 58, 0.26);
  color: var(--paper);
  font-size: 13px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .section-nav a:hover,
.page-about .section-nav a.is-active {
  background: rgba(201, 247, 58, 0.16);
  border-color: var(--accent-fluorescent-green);
  color: var(--accent-fluorescent-green);
}

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

.page-about .about-section {
  padding: 72px 0;
  scroll-margin-top: 80px;
}

.page-about .about-section-head {
  position: relative;
  display: grid;
  gap: 14px;
  margin-bottom: 40px;
  padding-top: 20px;
}

.page-about .about-section-head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 7px;
  border-radius: 3px;
  background: var(--accent-fluorescent-green);
  transform: skewX(-24deg);
}

.page-about .about-section-head .section-label {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-fluorescent-green);
}

.page-about .about-section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-section-kicker {
  margin: 6px 0 0;
  font-family: var(--font-editorial);
  font-size: 16px;
  color: var(--muted);
}

.page-about .figure {
  margin: 0 0 40px;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--secondary-cyan-surface);
}

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

.page-about .figure-caption {
  position: relative;
  padding: 12px 20px;
  font-family: var(--font-editorial);
  font-size: 13px;
  text-align: right;
  color: var(--muted);
  background: rgba(6, 42, 51, 0.9);
}

.page-about .about-timeline {
  position: relative;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(
    180deg,
    var(--secondary-cyan-surface) 0%,
    var(--accent-fluorescent-green) 55%,
    var(--data-green) 100%
  );
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 44px;
  border-radius: var(--radius-md);
  transition: background 0.25s ease;
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 8px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--accent-fluorescent-green);
  box-shadow: 0 0 0 4px rgba(201, 247, 58, 0.18);
}

.page-about .about-timeline-item:hover {
  background: rgba(12, 64, 80, 0.3);
}

.page-about .about-timeline-year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-fluorescent-green);
}

.page-about .about-timeline-tag {
  margin-bottom: 10px;
}

.page-about .about-timeline-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-timeline-item p:last-child {
  margin: 0;
  max-width: 600px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-body-text);
}

.page-about .about-callout {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 40px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(105deg, rgba(201, 247, 58, 0.12) 0%, rgba(12, 64, 80, 0.3) 60%, transparent 100%);
  border-left: 3px solid var(--accent-fluorescent-green);
}

.page-about .about-callout-label {
  margin: 0;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-callout-text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--paper);
}

.page-about .about-data-grid {
  display: grid;
  gap: 14px;
  margin-bottom: 36px;
}

.page-about .about-data-card {
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  background: rgba(12, 64, 80, 0.42);
  border: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-about .about-data-card:hover {
  border-color: var(--accent-fluorescent-green);
  background: rgba(12, 64, 80, 0.7);
}

.page-about .about-data-number {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-fluorescent-green);
}

.page-about .about-data-card .muted {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-about .about-data-card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-body-text);
}

.page-about .about-data-method {
  padding: 10px 0 10px 22px;
  border-left: 3px solid var(--accent-fluorescent-green);
  margin-top: 32px;
}

.page-about .about-data-method .section-label {
  margin: 0 0 12px;
  font-family: var(--font-editorial);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--accent-fluorescent-green);
  text-transform: uppercase;
}

.page-about .about-data-method p:last-child {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body-text);
}

.page-about .about-section-paper {
  margin: 40px 0;
  padding: 52px 24px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--about-paper-ink);
}

.page-about .about-section-paper .about-section-head h2 {
  color: var(--about-paper-ink);
}

.page-about .about-section-paper .about-section-head .section-label {
  color: var(--primary-deep-cyan);
}

.page-about .about-section-paper .about-section-kicker {
  color: #5B7A82;
}

.page-about .about-china-intro,
.page-about .about-china-outro {
  max-width: 660px;
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-paper-ink);
}

.page-about .about-section-paper .figure {
  background: var(--secondary-cyan-surface);
}

.page-about .about-section-paper .figure-caption {
  color: var(--about-paper-ink);
  background: rgba(244, 247, 245, 0.88);
}

.page-about .about-china-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 32px 0;
}

.page-about .about-china-stats .stat {
  background: var(--primary-deep-cyan);
  border-radius: var(--radius-md);
  padding: 22px 14px;
  text-align: center;
}

.page-about .about-china-stats .stat-value {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent-fluorescent-green);
}

.page-about .about-china-stats .stat-label {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-team-intro {
  max-width: 680px;
  margin: 0 0 32px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body-text);
}

.page-about .about-team-grid {
  display: grid;
  gap: 14px;
}

.page-about .about-team-cell {
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: rgba(12, 64, 80, 0.36);
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-about .about-team-cell:hover {
  background: rgba(12, 64, 80, 0.66);
  transform: translateY(-2px);
}

.page-about .about-team-num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: rgba(201, 247, 58, 0.5);
}

.page-about .about-team-cell h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team-cell p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-body-text);
}

.page-about .about-links {
  margin-top: 48px;
  padding: 48px 0 24px;
  border-top: 1px solid rgba(201, 247, 58, 0.2);
}

.page-about .about-links .section-label {
  margin: 0 0 16px;
  font-family: var(--font-editorial);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-fluorescent-green);
}

.page-about .about-links h2 {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-links a {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(201, 247, 58, 0.3);
  background: rgba(201, 247, 58, 0.08);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-about .about-links a:hover {
  background: var(--accent-fluorescent-green);
  color: var(--ink);
}

@media (min-width: 768px) {

  .page-about .breadcrumb {
    padding: 32px 40px 0;
  }

  .page-about .about-cover {
    padding: 72px 40px 104px;
  }

  .page-about .about-cover-grid {
    grid-template-columns: 1fr minmax(0, 320px);
    gap: 64px;
    align-items: end;
  }

  .page-about .about-layout {
    padding: 0 40px;
  }

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

  .page-about .section-nav {
    position: sticky;
    top: 30px;
    align-self: start;
    margin-right: 48px;
    padding: 24px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(201, 247, 58, 0.16);
  }

  .page-about .section-nav ol {
    flex-direction: column;
    gap: 6px;
  }

  .page-about .section-nav a {
    display: block;
    border: none;
    border-radius: var(--radius-pill);
    padding: 9px 16px;
  }

  .page-about .about-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .about-section {
    padding: 96px 0;
  }

  .page-about .about-timeline {
    position: relative;
    padding: 40px 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
  }

  .page-about .about-timeline-item {
    width: calc(50% - 44px);
    margin-left: 0;
    padding-left: 0;
    text-align: right;
  }

  .page-about .about-timeline-item::before {
    left: auto;
    right: -52px;
    top: 10px;
    width: 16px;
    height: 16px;
  }

  .page-about .about-timeline-item:nth-child(even) {
    margin-left: calc(50% + 44px);
    text-align: left;
  }

  .page-about .about-timeline-item:nth-child(even)::before {
    right: auto;
    left: -52px;
  }

  .page-about .about-data-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-about .about-china-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-about .about-china-stats .stat {
    padding: 28px 16px;
  }

  .page-about .about-china-stats .stat-value {
    font-size: 36px;
  }

  .page-about .about-section-paper {
    padding: 72px 44px;
  }

  .page-about .about-links {
    margin-top: 64px;
  }

}

@media (min-width: 1024px) {

  .page-about .about-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .section-nav {
    margin-right: 0;
  }

  .page-about .about-section-head {
    grid-template-columns: 220px 1fr;
    gap: 24px 40px;
    align-items: start;
  }

  .page-about .about-section-head .section-label {
    margin-top: 10px;
    text-align: right;
  }

  .page-about .about-china-intro,
  .page-about .about-china-outro {
    max-width: 720px;
    font-size: 16px;
  }

}