.page-about {
  --about-pad: clamp(44px, 6vw, 88px);
  --about-gap: clamp(18px, 2.6vw, 32px);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
}

.page-about p {
  margin: 0 0 14px;
  line-height: 1.75;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.page-about h1 {
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.1;
}

.page-about h2 {
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.16;
}

.page-about h3 {
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  margin-bottom: 8px;
}

.page-about .about-section {
  padding: var(--about-pad) 0;
}

.page-about .about-section--paper {
  background: var(--paper);
  color: var(--brown);
}

.page-about .about-section--ink {
  background: var(--ink);
  color: var(--mist);
}

.page-about .about-section--hull {
  background: var(--hull);
  color: var(--mist);
}

.page-about .about-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .about-label--cyan {
  color: var(--cyan);
}

/* 面包屑 */
.page-about .about-breadcrumb {
  background: var(--ink);
  padding: 22px 0 0;
}

/* 首屏 */
.page-about .about-hero {
  background: var(--paper);
  color: var(--brown);
  padding: clamp(26px, 4vw, 48px) 0 clamp(38px, 5vw, 68px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hero__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  max-width: 60ch;
  color: #3b2f28;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__console {
  background: var(--hull);
  color: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 32px);
  box-shadow: 0 18px 40px rgba(6, 17, 28, 0.22);
}

.page-about .about-console__badge {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--cyan);
  color: var(--hull);
  font-weight: 700;
  font-size: 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.page-about .about-console__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--mist);
}

.page-about .about-console__tag {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  margin: 0 0 20px;
}

.page-about .about-console__list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-console__list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-console__list > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-console__list dt {
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-console__list dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--mist);
}

/* 起点 */
.page-about .about-split {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-split__main .prose p {
  max-width: 66ch;
}

.page-about .about-note {
  border-left: 2px solid var(--orange);
  padding-left: 18px;
}

.page-about .about-note ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-note li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.65;
  color: #43352d;
}

.page-about .about-note li .mono {
  flex: 0 0 auto;
  color: var(--orange);
  font-weight: 700;
}

/* 团队 */
.page-about .about-team__lead {
  max-width: 68ch;
  color: #cfdde8;
}

.page-about .about-team__body {
  display: grid;
  gap: var(--about-gap);
  margin-top: 28px;
}

.page-about .about-team__cards {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-role {
  background: var(--ink);
  padding: 22px 20px;
  transition: background var(--dur) var(--ease);
}

.page-about .about-role:hover {
  background: var(--table);
}

.page-about .about-role--service {
  background: var(--table);
}

.page-about .about-role__num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  margin: 0 0 10px;
}

.page-about .about-role__num span {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--slate);
  margin-left: 4px;
}

.page-about .about-role h3 {
  color: var(--mist);
}

.page-about .about-role p {
  font-size: 14px;
  line-height: 1.7;
  color: #b9cad8;
  margin: 0;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img,
.page-about .about-history__figure img,
.page-about .about-scale__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

/* 校对流程 */
.page-about .about-flow__lead {
  max-width: 66ch;
  color: #c3d3e0;
}

.page-about .about-flow {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-about .about-flow__step {
  position: relative;
  background: var(--table);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-flow__step:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .about-flow__tag {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 12px;
  background: transparent;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}

.page-about .about-flow__step h3 {
  color: var(--mist);
}

.page-about .about-flow__step p {
  font-size: 14px;
  line-height: 1.72;
  color: #b9cad8;
  margin: 0;
}

.page-about .about-flow__note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 26px;
  padding: 16px 18px;
  border-left: 2px solid var(--mint);
  background: rgba(60, 224, 207, 0.06);
}

.page-about .about-flow__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #cfdde8;
}

.page-about .about-flow__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--mint);
}

/* 演进 */
.page-about .about-history__lead {
  max-width: 64ch;
  color: #43352d;
}

.page-about .about-history__figure {
  margin: 26px 0 34px;
  max-width: 720px;
}

.page-about .about-timeline {
  display: grid;
  gap: 26px;
}

.page-about .about-timeline__index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__index a {
  flex: 0 0 auto;
  padding: 9px 14px;
  border: 1px solid var(--line-paper);
  border-radius: 999px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 600;
  color: var(--brown);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-timeline__index a:hover,
.page-about .about-timeline__index a:focus-visible {
  background: var(--brown);
  color: var(--paper);
  border-color: var(--brown);
}

.page-about .about-timeline__list {
  display: grid;
  gap: 0;
}

.page-about .about-version {
  position: relative;
  border-left: 2px solid var(--line-paper);
  padding: 0 0 28px 22px;
  scroll-margin-top: 84px;
}

.page-about .about-version:last-child {
  padding-bottom: 6px;
}

.page-about .about-version::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--slate);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-version:target {
  border-left-color: var(--orange);
}

.page-about .about-version:target::before {
  background: var(--orange);
  border-color: var(--orange);
}

.page-about .about-version__tag {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
  margin: 0 0 6px;
}

.page-about .about-version h3 {
  color: var(--brown);
}

.page-about .about-version p {
  margin: 0;
  font-size: 14.5px;
  color: #43352d;
  max-width: 64ch;
}

/* 规模 */
.page-about .about-scale__lead {
  max-width: 64ch;
  color: #c3d3e0;
}

.page-about .about-stats {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 28px;
}

.page-about .about-stat {
  background: var(--ink);
  padding: 22px 20px;
}

.page-about .about-stat__num {
  font-family: var(--font-num);
  font-size: clamp(30px, 5vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
  margin: 0 0 8px;
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__num span {
  font-size: 16px;
  font-weight: 600;
  margin-left: 2px;
  color: var(--mist);
}

.page-about .about-stat__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--mist);
  margin: 0 0 6px;
}

.page-about .about-stat__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
  margin: 0;
}

.page-about .about-bars {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.page-about .about-bar__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 9px;
  font-size: 13.5px;
  color: #cfdde8;
}

.page-about .about-bar__head .mono {
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-bar__track {
  height: 6px;
  background: var(--table);
  border-radius: 999px;
  overflow: hidden;
}

.page-about .about-bar__fill {
  height: 100%;
  background: var(--cyan);
  border-radius: 999px;
}

.page-about .about-bar__fill--alert {
  background: var(--orange);
}

.page-about .about-scale__figure {
  margin: 34px 0 0;
}

.page-about .about-award {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-top: 30px;
  padding: 20px;
  background: var(--table);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
}

.page-about .about-award__year {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--orange);
  margin: 0;
  flex: 0 0 auto;
}

.page-about .about-award__body h3 {
  color: var(--mist);
  font-size: 17px;
}

.page-about .about-award__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #b9cad8;
}

/* 来源 */
.page-about .about-sources__lead {
  max-width: 66ch;
  color: #43352d;
}

.page-about .about-sources {
  display: grid;
  gap: var(--about-gap);
  margin: 26px 0 30px;
}

.page-about .about-source {
  padding: 22px 20px;
  background: rgba(255, 255, 255, 0.46);
  border: 1px solid var(--line-paper);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-source:hover {
  transform: translateY(-3px);
  border-color: var(--orange);
  background: rgba(255, 255, 255, 0.72);
}

.page-about .about-source h3 {
  color: var(--brown);
  font-size: 17px;
}

.page-about .about-source p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: #43352d;
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--line-paper);
}

.page-about .about-cta__note {
  margin: 14px 0 0;
  font-size: 13px;
  color: #6b5b50;
}

/* 断点 */
@media (min-width: 620px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (min-width: 860px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 44px;
    right: -24px;
    width: 24px;
    height: 1px;
    background: var(--cyan);
    opacity: 0.7;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: stretch;
  }

  .page-about .about-split {
    grid-template-columns: 8fr 4fr;
    align-items: start;
    gap: 48px;
  }

  .page-about .about-timeline {
    grid-template-columns: 200px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-timeline__index {
    position: sticky;
    top: 24px;
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-timeline__index a {
    border-radius: var(--radius);
    text-align: left;
  }

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

@media (min-width: 960px) {
  .page-about .about-team__body {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 36px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-flow__step,
  .page-about .about-source,
  .page-about .about-timeline__index a,
  .page-about .about-version::before {
    transition: none;
  }

  .page-about .about-flow__step:hover,
  .page-about .about-source:hover {
    transform: none;
  }
}
<<<END>>>