.page-about {
  --about-body: #cfded8;
  --about-ink-body: #24382f;
  --about-hair: rgba(159, 179, 172, 0.22);
  --about-cyan-line: rgba(53, 242, 200, 0.24);
  --about-ink-line: rgba(6, 17, 14, 0.16);
  background: var(--ink);
  color: var(--chalk);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 10px 0 0;
}

.page-about .lede {
  color: var(--about-body);
  font-size: 16.5px;
  line-height: 1.8;
  max-width: 34em;
  margin: 12px 0 0;
}

.page-about .section {
  padding-top: clamp(48px, 8vw, 96px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 图片容器 ---------- */
.page-about .about-fig {
  margin: 0;
  border: 1px solid var(--terrace);
  background: var(--turf);
  position: relative;
}

.page-about .about-fig img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-fig--tall img {
  aspect-ratio: 3 / 4;
}

.page-about .about-fig--photo img {
  aspect-ratio: 3 / 2;
}

.page-about .about-fig figcaption {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  padding: 10px 12px;
  border-top: 1px solid var(--terrace);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(30px, 6vw, 64px) 0 clamp(44px, 8vw, 96px);
  background:
    radial-gradient(120% 90% at 82% -20%, rgba(53, 242, 200, 0.16), transparent 62%),
    linear-gradient(180deg, var(--turf) 0%, var(--ink) 82%);
  border-bottom: 1px solid var(--terrace);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(20, 51, 42, 0.55) 0 1px, transparent 1px 76px);
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

.page-about .about-hero__text .eyebrow {
  display: block;
  margin-top: 18px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.012em;
  margin: 12px 0 0;
  max-width: 16em;
}

.page-about .about-hero__lede {
  margin: 16px 0 0;
  max-width: 32em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-hero__facts li {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gray);
  padding: 12px 16px 0 0;
  margin-right: 16px;
  border-right: 1px solid var(--about-hair);
}

.page-about .about-hero__facts li:last-child {
  border-right: 0;
  margin-right: 0;
  padding-right: 0;
}

.page-about .about-hero__facts b {
  color: var(--gold);
  font-weight: 700;
  margin-right: 6px;
}

/* ---------- 看台视角 ---------- */
.page-about .about-stand__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-stand h2 {
  max-width: 12em;
}

.page-about .about-prose p {
  margin: 0 0 1.05em;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.88;
  color: var(--about-body);
}

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

/* ---------- 时间线 ---------- */
.page-about .about-head {
  max-width: 44em;
}

.page-about .tl {
  list-style: none;
  position: relative;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0 0 0 44px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 200, 0.06));
}

.page-about .tl-item {
  position: relative;
  padding-bottom: clamp(26px, 3.4vw, 42px);
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 10px;
  width: 10px;
  height: 10px;
  box-sizing: border-box;
  background: var(--ink);
  border: 1px solid var(--cyan);
  transition: background var(--t-fast), transform var(--t-fast);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--cyan);
  transform: scale(1.15);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .tl-title {
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  margin: 6px 0 8px;
  color: var(--chalk);
}

.page-about .tl-text {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--about-body);
}

.page-about .tl-note {
  margin: 10px 0 0;
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--terrace);
  max-width: 40em;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--gray);
  transition: max-height var(--t-fast), opacity var(--t-fast), margin-top var(--t-fast),
    padding var(--t-fast), border-left-width var(--t-fast);
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .tl-note {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-left-width: 0;
    overflow: hidden;
  }

  .page-about .tl-item:hover .tl-note,
  .page-about .tl-item:focus-within .tl-note {
    max-height: 14em;
    opacity: 1;
    margin-top: 10px;
    padding-top: 8px;
    padding-bottom: 8px;
    border-left-width: 2px;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--chalk);
  color: var(--ink);
  border-top: 1px solid var(--terrace);
  border-bottom: 1px solid var(--terrace);
}

.page-about .about-team h2 {
  color: var(--ink);
}

.page-about .about-team .lede,
.page-about .about-team .about-head .lede {
  color: var(--about-ink-body);
}

.page-about .about-team__eyebrow {
  color: var(--terrace);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .team-fig {
  border-color: var(--about-ink-line);
  background: #d9e4de;
}

.page-about .team-fig figcaption {
  border-top-color: var(--about-ink-line);
  color: var(--terrace);
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  padding: 16px 16px 20px;
  border: 1px solid var(--about-ink-line);
  background: rgba(255, 255, 255, 0.55);
  transition: box-shadow var(--t-fast), border-color var(--t-fast);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-color: var(--terrace);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-about .team-card__idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--terrace);
}

.page-about .team-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 8px 0 8px;
  color: var(--ink);
}

.page-about .team-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-ink-body);
}

.page-about .team-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--terrace);
}

.page-about .team-flow .step {
  border: 1px solid var(--about-ink-line);
  padding: 7px 12px;
  min-height: 30px;
  display: inline-flex;
  align-items: center;
}

.page-about .team-flow .arrow {
  color: var(--orange);
  font-weight: 700;
}

/* ---------- 数据来源 ---------- */
.page-about .about-source__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-about .about-source h2 {
  margin-top: 10px;
}

.page-about .about-source .eyebrow {
  display: block;
  margin: 0;
}

.page-about .rings {
  display: grid;
  align-content: center;
}

.page-about .ring {
  border: 1px solid var(--about-cyan-line);
  padding: clamp(10px, 1.8vw, 20px);
}

.page-about .ring--outer {
  background: linear-gradient(135deg, rgba(53, 242, 200, 0.06), transparent 70%);
}

.page-about .ring--core {
  border-color: var(--cyan);
  background: rgba(53, 242, 200, 0.09);
}

.page-about .ring__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 5px;
}

.page-about .ring__name {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--about-body);
  margin-bottom: 8px;
}

.page-about .ring--core .ring__name {
  color: var(--cyan);
  margin-bottom: 0;
  font-weight: 700;
}

/* ---------- 更新节奏表 ---------- */
.page-about .cadence-wrap {
  margin-top: clamp(22px, 3vw, 34px);
  border: 1px solid var(--terrace);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .cadence {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .cadence thead th {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  text-align: left;
  color: var(--gray);
  background: var(--turf);
  padding: 13px 14px;
  border-bottom: 1px solid var(--terrace);
  white-space: nowrap;
}

.page-about .cadence tbody th {
  text-align: left;
  font-weight: 700;
  color: var(--chalk);
  background: var(--ink);
  position: sticky;
  left: 0;
  z-index: 1;
}

.page-about .cadence tbody td {
  color: var(--about-body);
  padding: 14px;
  border-bottom: 1px solid var(--terrace);
  vertical-align: top;
  line-height: 1.7;
}

.page-about .cadence tbody tr:last-child th,
.page-about .cadence tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .cadence tbody tr {
  transition: background var(--t-fast);
}

.page-about .cadence tbody tr:hover {
  background: var(--terrace);
}

.page-about .cadence tbody tr:hover th {
  background: var(--terrace);
  box-shadow: inset 2px 0 0 var(--cyan);
}

.page-about .cadence .next {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gray);
  opacity: 0.62;
  white-space: nowrap;
  transition: opacity var(--t-fast), color var(--t-fast);
}

.page-about .cadence tbody tr:hover .next {
  opacity: 1;
  color: var(--cyan);
}

.page-about .about-cadence__trust {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 42em;
}

/* ---------- 工作现场 ---------- */
.page-about .scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-about .scene-item {
  border-top: 2px solid var(--terrace);
  padding-top: 12px;
  transition: border-color var(--t-fast);
}

.page-about .scene-item:hover,
.page-about .scene-item:focus-within {
  border-top-color: var(--cyan);
}

.page-about .scene-item__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .scene-item h3 {
  font-size: 15.5px;
  font-weight: 700;
  margin: 8px 0 8px;
  color: var(--chalk);
}

.page-about .scene-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gray);
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  background: var(--turf);
  border-top: 1px solid var(--terrace);
  padding-bottom: clamp(44px, 7vw, 84px);
}

.page-about .about-outro__fig {
  margin: 0;
  border-bottom: 1px solid var(--terrace);
}

.page-about .about-outro__fig img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-about .about-outro__inner {
  padding-top: clamp(36px, 5vw, 60px);
}

.page-about .about-next {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-next a {
  position: relative;
  z-index: 0;
  display: block;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--terrace);
  padding: 18px 18px 20px;
  min-height: 44px;
  transition: border-color var(--t-fast);
}

.page-about .about-next a::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(255, 107, 44, 0.2), rgba(255, 107, 44, 0));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-fast);
}

.page-about .about-next a:hover,
.page-about .about-next a:focus-visible {
  border-color: var(--orange);
}

.page-about .about-next a:hover::before,
.page-about .about-next a:focus-visible::before {
  transform: scaleX(1);
}

.page-about .about-next__title {
  display: block;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .about-next__desc {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-next__go {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

@media (min-width: 860px) {
  .page-about .team-grid {
    grid-template-columns: 1.18fr 0.95fr 0.95fr;
    grid-template-areas:
      "fig a b"
      "fig c d";
    gap: 16px;
  }

  .page-about .team-fig {
    grid-area: fig;
    align-self: stretch;
    display: flex;
    flex-direction: column;
  }

  .page-about .team-fig img {
    flex: 1 1 auto;
    height: 100%;
    aspect-ratio: auto;
    min-height: 220px;
  }

  .page-about .team-card--a { grid-area: a; }
  .page-about .team-card--b { grid-area: b; }
  .page-about .team-card--c { grid-area: c; }
  .page-about .team-card--d { grid-area: d; }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
    gap: clamp(32px, 4.5vw, 64px);
  }

  .page-about .about-stand__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-stand__head {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
  }

  .page-about .about-source__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .page-about .scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: clamp(48px, 6vw, 84px);
  }

  .page-about .about-hero h1 {
    max-width: 15em;
  }
}
<<<END>>>