.page-about {
  --about-axis: 32px;
  --about-axis-gap: 16px;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: calc(var(--header-h) + 4px) 0 44px;
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(95, 224, 206, 0.12), transparent 62%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 72%);
}

.page-about .about-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 12px;
  color: var(--muted-400);
}

.page-about .about-crumb a {
  color: var(--muted-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  max-width: 15em;
  font-size: clamp(30px, 6.6vw, 56px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-about .about-hero__text {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted-400);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .about-stats li:hover {
  border-color: var(--cyan-300);
  background: var(--ink-700);
}

.page-about .about-stats__num {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime-400);
}

.page-about .about-stats__num span {
  margin-left: 2px;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted-400);
}

.page-about .about-stats__label {
  font-size: 12px;
  color: var(--muted-400);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(7, 26, 21, 0.86) 100%);
  pointer-events: none;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 1;
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lime-400);
}

/* ---------- 章节索引条 ---------- */
.page-about .about-index {
  border-block: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--ink-700);
  border-radius: var(--pill);
  font-size: 13px;
  color: var(--paper-100);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--ease), background var(--ease), color var(--ease);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  border-color: var(--lime-400);
  background: var(--ink-700);
  color: var(--lime-400);
}

.page-about .about-index__list .mono {
  font-size: 11px;
  color: var(--cyan-300);
}

/* ---------- 纵向轴线骨架 ---------- */
.page-about .about-body {
  position: relative;
  padding: 10px 0 20px;
}

.page-about .about-body::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 15px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent 0,
    var(--ink-600) 56px,
    var(--ink-600) calc(100% - 56px),
    transparent 100%
  );
}

.page-about .about-chapter {
  display: grid;
  grid-template-columns: var(--about-axis) minmax(0, 1fr);
  column-gap: var(--about-axis-gap);
  padding: 34px 0;
  scroll-margin-top: 132px;
}

.page-about .about-chapter__axis {
  position: relative;
  display: flex;
  justify-content: flex-start;
}

.page-about .about-chapter__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--about-axis);
  height: var(--about-axis);
  border: 1px solid var(--ink-600);
  border-radius: 50%;
  background: var(--ink-900);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--lime-400);
  position: relative;
  z-index: 1;
  transition: border-color var(--ease), background var(--ease), color var(--ease);
}

.page-about .about-chapter:hover .about-chapter__num {
  border-color: var(--lime-400);
  background: var(--ink-700);
}

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

.page-about .about-chapter__kicker {
  margin: 2px 0 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan-300);
}

.page-about .about-chapter__head h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 4vw, 33px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--paper-100);
  max-width: 20em;
}

.page-about .about-chapter__intro {
  margin: 0 0 22px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted-400);
}

/* ---------- 01 发展历程 ---------- */
.page-about .about-timeline {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-about .about-timeline__item:hover {
  border-color: var(--lime-400);
  background: var(--ink-700);
  transform: translateX(2px);
}

.page-about .about-timeline__year {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--cyan-300);
}

.page-about .about-timeline__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-100);
}

.page-about .about-timeline__body p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted-400);
}

/* ---------- 02 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 12px;
}

.page-about .about-team__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  transition: border-color var(--ease), background var(--ease), box-shadow var(--ease);
}

.page-about .about-team__card:hover {
  border-color: var(--lime-600);
  background: var(--ink-700);
}

.page-about .about-team__role {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted-400);
}

.page-about .about-team__count {
  margin: 0;
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime-400);
}

.page-about .about-team__count span {
  margin-left: 4px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted-400);
}

.page-about .about-team__card h3 {
  margin: 2px 0 2px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-100);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-400);
}

.page-about .about-team__shift {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--cyan-300);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(95, 224, 206, 0.06);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-100);
}

/* ---------- 03 数据 ---------- */
.page-about .about-data {
  display: grid;
  gap: 26px;
}

.page-about .about-data__text p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted-400);
}

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

.page-about .about-data__figure {
  position: relative;
  margin: 0 0 16px;
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
}

.page-about .about-data__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-data__figure figcaption {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--lime-400);
  background: rgba(7, 26, 21, 0.78);
  padding: 3px 8px;
  border-radius: var(--pill);
}

.page-about .about-terms {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-term {
  position: relative;
  padding: 14px 32px 14px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .about-term::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-width: 0 15px 15px 0;
  border-style: solid;
  border-color: transparent var(--ink-900) transparent transparent;
}

.page-about .about-term:hover {
  border-color: var(--cyan-300);
  background: var(--ink-700);
}

.page-about .about-term__id {
  display: block;
  margin-bottom: 4px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--cyan-300);
}

.page-about .about-term h3 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper-100);
}

.page-about .about-term p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted-400);
}

/* ---------- 04 覆盖范围 ---------- */
.page-about .about-reach__map {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(0deg, rgba(198, 242, 74, 0.04), rgba(198, 242, 74, 0.04)),
    var(--ink-800);
}

.page-about .about-reach__map img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  opacity: 0.92;
}

.page-about .about-reach__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--cyan-300);
}

.page-about .about-reach__hot {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  padding: 8px 14px;
  border: 1px solid var(--lime-400);
  border-radius: var(--pill);
  background: rgba(7, 26, 21, 0.86);
  font-size: 12px;
  color: var(--paper-100);
  transition: background var(--ease), border-color var(--ease);
}

.page-about .about-reach__map:hover .about-reach__hot {
  background: var(--lime-400);
  color: var(--ink-900);
  border-color: var(--lime-400);
}

.page-about .about-reach__hot .mono {
  font-size: 15px;
  font-weight: 700;
  color: var(--lime-400);
}

.page-about .about-reach__map:hover .about-reach__hot .mono {
  color: var(--ink-900);
}

.page-about .about-reach__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-reach__list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 16px;
  border-top: 1px solid var(--ink-700);
  background: linear-gradient(180deg, rgba(12, 42, 34, 0.7), rgba(7, 26, 21, 0));
}

.page-about .about-reach__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper-100);
}

.page-about .about-reach__label {
  font-size: 12px;
  color: var(--muted-400);
}

/* ---------- 05 工作节奏 ---------- */
.page-about .about-rhythm {
  display: grid;
  gap: 0;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-rhythm li {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-about .about-rhythm__k {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan-300);
}

.page-about .about-rhythm__item--sub .about-rhythm__k {
  color: var(--amber-400);
}

.page-about .about-rhythm p {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted-400);
}

.page-about .about-next {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next a {
  display: grid;
  gap: 3px;
  padding: 16px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-about .about-next a:hover,
.page-about .about-next a:focus-visible {
  border-color: var(--lime-400);
  background: var(--ink-700);
  transform: translateY(-2px);
}

.page-about .about-next__k {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--cyan-300);
}

.page-about .about-next strong {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-100);
}

.page-about .about-next__d {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-reach__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-rhythm li {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-about .about-rhythm__k {
    text-align: right;
  }
}

@media (min-width: 760px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 14px;
  }

  .page-about .about-team__card:nth-child(1) {
    min-height: 214px;
  }

  .page-about .about-team__card:nth-child(2) {
    min-height: 176px;
  }

  .page-about .about-team__card:nth-child(3) {
    min-height: 152px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    padding: 20px 22px;
  }

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

@media (min-width: 900px) {
  .page-about {
    --about-axis: 40px;
    --about-axis-gap: 36px;
  }

  .page-about .about-body::before {
    left: 19px;
  }

  .page-about .about-chapter {
    padding: 46px 0;
  }

  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 12px);
    padding-bottom: 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: end;
  }

  .page-about .about-data {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .about-chapter__head h2 {
    max-width: 18em;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero h1 {
    font-size: clamp(44px, 4.4vw, 60px);
  }

  .page-about .about-hero__text {
    font-size: 17px;
  }
}
<<<END>>>