.page-about {
  --about-pad: 22px;
  color: var(--paper);
  font-family: var(--font-body);
}

.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--moss);
}

.page-about .crumbs a {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .crumbs [aria-current] {
  color: var(--paper);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  display: grid;
  gap: 28px;
  padding: 26px 0 52px;
}

.page-about .about-hero .eyebrow {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7vw, 58px);
  line-height: 1.08;
  letter-spacing: 0.005em;
  margin: 0 0 18px;
  max-width: 16ch;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.78;
  color: rgba(237, 234, 227, 0.82);
  margin: 0 0 26px;
  max-width: 56ch;
}

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

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 31, 26, 0) 40%, rgba(11, 31, 26, 0.72) 100%);
  pointer-events: none;
}

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

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding: 0 0 58px;
}

.page-about .section-head {
  margin-bottom: 20px;
  max-width: 68ch;
}

.page-about .section-head .eyebrow {
  margin: 0 0 8px;
  color: var(--moss);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.16;
  margin: 0;
  color: var(--paper);
}

.page-about .about-lede,
.page-about .about-note {
  font-size: 15px;
  line-height: 1.78;
  color: var(--moss);
  margin: 12px 0 0;
  max-width: 62ch;
}

.page-about .about-note {
  margin-top: 16px;
}

.page-about .about-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--about-pad);
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

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

.page-about .num--amber {
  color: var(--amber);
}

/* ---------- 起点叙事 ---------- */
.page-about .about-story {
  display: grid;
  gap: 24px;
}

.page-about .about-story__main p {
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 16px;
  color: rgba(237, 234, 227, 0.86);
}

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

.page-about .about-aside__title {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--moss);
  margin: 0 0 12px;
}

.page-about .about-shortcuts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-shortcuts a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-about .about-shortcuts a span {
  color: var(--cyan);
}

.page-about .about-shortcuts a:hover,
.page-about .about-shortcuts a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- 覆盖规模 ---------- */
.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-scale__cell {
  background: var(--panel);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-scale__cell .num {
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1;
}

.page-about .about-scale__cell span:last-child {
  font-size: 13px;
  line-height: 1.5;
  color: var(--moss);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-update__cols {
  display: grid;
  gap: 22px;
}

.page-about .about-update__cols h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-about .about-update__cols p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: rgba(237, 234, 227, 0.82);
}

.page-about .about-update__cols > div + div {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  display: grid;
  gap: 20px;
}

.page-about .about-team__cards {
  display: grid;
  gap: 12px;
}

.page-about .about-role {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px;
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease), background 0.16s var(--ease);
}

.page-about .about-role .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: var(--r-sm);
  margin-bottom: 10px;
}

.page-about .about-role h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-about .about-role p {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  color: rgba(237, 234, 227, 0.78);
}

.page-about .about-role:hover,
.page-about .about-role:focus-visible,
.page-about .about-role:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-role:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-team__figure {
  margin: 0;
  aspect-ratio: 11 / 7;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

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

/* ---------- 版本演进 ---------- */
.page-about .about-version {
  display: grid;
  gap: 26px;
}

.page-about .about-version__visual {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

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

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--clay) 60%, var(--line) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px 18px;
  margin-bottom: 14px;
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 20px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus-visible {
  border-color: var(--cyan);
  transform: translateX(2px);
  outline: none;
}

.page-about .about-timeline__item:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-timeline__stage {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin: 0 0 6px;
}

.page-about .about-timeline__item h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-about .about-timeline__item p:last-child {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  color: rgba(237, 234, 227, 0.78);
}

/* ---------- 合作 ---------- */
.page-about .about-partner p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 14px;
  color: rgba(237, 234, 227, 0.84);
}

.page-about .about-partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

/* ---------- 收束 ---------- */
.page-about .about-closing {
  padding-bottom: 72px;
}

.page-about .about-closing__inner {
  border-top: 2px solid var(--cyan);
  padding-top: 26px;
  max-width: 72ch;
}

.page-about .about-closing__inner .eyebrow {
  margin: 0 0 10px;
  color: var(--moss);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .about-closing__inner h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.14;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-about .about-closing__inner p {
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 24px;
  color: rgba(237, 234, 227, 0.8);
}

.page-about .about-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-update__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
  }

  .page-about .about-update__cols > div + div {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-section {
    padding-bottom: 76px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 52px;
    align-items: center;
    padding: 48px 0 84px;
  }

  .page-about .about-hero__figure {
    aspect-ratio: 5 / 4;
  }

  .page-about .about-story {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 0.9fr);
    gap: 40px;
  }

  .page-about .about-story__aside {
    padding-left: 24px;
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    align-self: start;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    align-items: stretch;
    gap: 22px;
  }

  .page-about .about-team__figure {
    aspect-ratio: auto;
    height: 100%;
    min-height: 260px;
  }

  .page-about .about-version {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-version__visual {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }

  .page-about .about-timeline__item {
    padding: 18px 22px;
  }

  .page-about .about-closing {
    padding-bottom: 96px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-scale__cell {
    padding: 26px 22px;
  }
}
<<<END>>>