.page-about {
  background: var(--ink);
  color: var(--mist);
  overflow-x: hidden;
}

.page-about .about-masthead {
  padding-top: clamp(20px, 3.4vw, 44px);
  padding-bottom: clamp(30px, 4.6vw, 60px);
  display: grid;
  gap: clamp(12px, 1.8vw, 20px);
}

.page-about .display-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.35rem, 7.2vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.012em;
  color: var(--cream);
  max-width: 22ch;
}

.page-about .lede {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.75;
}

.page-about .masthead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(14px, 2.6vw, 26px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .stat {
  background: var(--ink-panel);
  padding: 14px 16px 16px;
}

.page-about .stat dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
  line-height: 1.4;
}

.page-about .stat dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-jump {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .jump-link {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  background: rgba(11, 46, 37, 0.6);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .jump-link:hover,
.page-about .jump-link:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .about-split {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
  padding-bottom: clamp(36px, 5vw, 72px);
}

.page-about .split-rail {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  align-content: start;
}

.page-about .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-panel);
  max-width: 100%;
}

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

.page-about .rail-plate img {
  aspect-ratio: 3 / 4;
}

.page-about .media-caption {
  display: block;
  padding: 9px 12px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--steel);
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
}

.page-about .year-rail {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 16px;
}

.page-about .year-rail li {
  position: relative;
  display: grid;
  gap: 3px;
}

.page-about .year-rail li::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--ember);
  transform: rotate(45deg);
}

.page-about .year-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.15rem, 2.3vw, 1.45rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-about .year-label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .split-body {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  align-content: start;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.65rem, 4vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.008em;
  color: var(--cream);
  max-width: 24ch;
}

.page-about .prose p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-about .card {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(16px, 2.4vw, 24px);
  border-radius: var(--radius);
}

.page-about .origin-card {
  display: grid;
  gap: 10px;
  border-left: 4px solid var(--lime);
}

.page-about .origin-card-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--brown);
}

.page-about .about-pipeline {
  background: var(--ink-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(32px, 5vw, 72px) 0;
}

.page-about .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .section-note {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .pipeline-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-about .pipeline-plate img {
  aspect-ratio: 3 / 2;
}

.page-about .pipeline-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .step {
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .step-time {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  margin-bottom: 8px;
}

.page-about .step h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cream);
}

.page-about .step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-coverage {
  padding-top: clamp(34px, 5vw, 72px);
  padding-bottom: clamp(34px, 5vw, 72px);
}

.page-about .coverage-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .coverage-card {
  background: var(--ink);
  padding: clamp(16px, 2.4vw, 26px);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .coverage-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cream);
  line-height: 1.4;
}

.page-about .coverage-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .tag {
  justify-self: start;
  display: inline-block;
  padding: 3px 9px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  border-radius: 999px;
  font-weight: 600;
}

.page-about .tag-lime {
  background: var(--lime);
  color: var(--ink);
}

.page-about .tag-amber {
  background: var(--amber);
  color: var(--brown);
}

.page-about .tag-ember {
  background: var(--ember);
  color: var(--cream);
}

.page-about .about-team {
  background: var(--ink-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(32px, 5vw, 72px) 0;
}

.page-about .team-lane {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .team-item {
  background: var(--ink-deep);
  padding: 16px 14px 18px;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .team-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.7rem;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-about .team-role {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cream);
}

.page-about .team-desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--steel);
}

.page-about .about-partners {
  padding-top: clamp(34px, 5vw, 72px);
  padding-bottom: clamp(34px, 5vw, 72px);
}

.page-about .partners-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .partners-plate img {
  aspect-ratio: 3 / 2;
}

.page-about .partners-body {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  align-content: start;
}

.page-about .partners-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .partner-list li {
  background: var(--ink-panel);
  padding: 13px 15px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.page-about .partner-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--amber);
  line-height: 1.1;
}

.page-about .partner-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .partner-card {
  display: grid;
  gap: 10px;
  border-left: 4px solid var(--amber);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--brown);
}

.page-about .about-lanzhou {
  position: relative;
  background:
    repeating-linear-gradient(90deg, rgba(242, 178, 74, 0.05) 0 1px, transparent 1px 26px),
    radial-gradient(120% 90% at 12% 100%, rgba(23, 71, 58, 0.85) 0%, rgba(4, 21, 15, 0) 62%),
    var(--ink-deep);
  border-top: 1px solid var(--line);
  padding: clamp(34px, 5.2vw, 76px) 0;
}

.page-about .lanzhou-inner {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-about .lanzhou-body {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .lanzhou-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 60ch;
}

.page-about .lanzhou-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-about .lanzhou-mark {
  display: grid;
  grid-template-columns: auto minmax(28px, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(11, 46, 37, 0.55);
}

.page-about .mark-year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  font-weight: 600;
  color: var(--lime);
  letter-spacing: 0.04em;
}

.page-about .mark-line {
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--lime), var(--ember));
  transform: skewX(-18deg);
}

.page-about .mark-note {
  grid-column: 1 / -1;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--steel);
}

@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .coverage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .team-lane {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .about-split {
    grid-template-columns: 0.66fr 1fr;
    align-items: start;
  }

  .page-about .pipeline-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-about .partners-grid {
    grid-template-columns: 0.92fr 1.08fr;
  }

  .page-about .lanzhou-inner {
    grid-template-columns: 1.35fr 0.65fr;
  }

  .page-about .team-lane {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-about .coverage-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .display-title {
    max-width: 26ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .jump-link {
    transition: none;
  }
}
<<<END>>>