.page-about {
  --about-gap: 1.25rem;
  --about-line: var(--line);
  color: var(--white);
  background: var(--ink);
}

.page-about .breadcrumbs ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--muted);
}

.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumbs .sep {
  color: var(--track);
}

.page-about .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ---------- 首屏：叙事 + 档案卡 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 32px;
  padding-top: 30px;
  padding-bottom: 56px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-size: clamp(1.95rem, 8.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.page-about .chip--outline {
  border-color: var(--line);
  color: var(--muted);
}

.page-about .chip--ice {
  background: var(--ice);
  color: var(--ink);
}

.page-about .chip--orange {
  background: var(--orange);
  color: var(--ink);
}

.page-about .about-profile {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(circle at 92% 6%, rgba(200, 255, 61, 0.14), transparent 58%),
    var(--panel);
}

.page-about .about-shot {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-m);
  background: var(--step);
}

.page-about .about-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-about .about-profile__list {
  margin: 18px 0 0;
  padding: 0;
}

.page-about .about-profile__row {
  display: grid;
  grid-template-columns: 5.5em 1fr;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px dashed var(--line);
  border-radius: var(--radius-s);
  transition: box-shadow 160ms ease, background-color 160ms ease;
}

.page-about .about-profile__row:last-child {
  border-bottom: 0;
}

.page-about .about-profile__row:hover,
.page-about .about-profile__row:focus-within {
  background: rgba(200, 255, 61, 0.06);
  box-shadow: inset 0 0 0 1px var(--lime);
}

.page-about .about-profile__key {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding-top: 2px;
}

.page-about .about-profile__val {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--white);
}

.page-about .about-profile__val--mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--lime-2);
}

/* ---------- 章节通用 ---------- */
.page-about .about-block {
  padding: 48px 0;
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  justify-items: start;
  margin-bottom: 32px;
}

.page-about .about-head h2 {
  margin: 0;
  font-size: clamp(1.45rem, 5.4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-about .about-head__note {
  margin: 0;
  max-width: 34em;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 5px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime), var(--track) 78%, transparent);
}

.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 14px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 20px;
  left: -22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-about .about-node {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-about .about-node[open] {
  border-color: var(--lime);
  background: var(--step);
}

.page-about .about-node__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-m);
}

.page-about .about-node__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-node__summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-about .about-node__year {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--lime);
  min-width: 3.6em;
}

.page-about .about-node__title {
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-about .about-node__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-about .about-node__sign::before,
.page-about .about-node__sign::after {
  content: "";
  position: absolute;
  background: var(--muted);
  border-radius: 2px;
  transition: transform 160ms ease, background-color 160ms ease;
}

.page-about .about-node__sign::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-about .about-node__sign::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-about .about-node[open] .about-node__sign::after {
  transform: scaleY(0);
}

.page-about .about-node[open] .about-node__sign::before {
  background: var(--lime);
}

.page-about .about-node__body {
  padding: 0 18px 18px;
}

.page-about .about-node__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 团队横向条带 ---------- */
.page-about .about-band {
  margin: 0 -18px;
  padding: 0 18px 8px;
}

.page-about .about-band__track {
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 4px 0 18px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-band__track:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-about .about-band__track > li {
  flex: 0 0 auto;
  width: min(292px, 78vw);
  scroll-snap-align: start;
}

.page-about .about-team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--panel);
  transition: transform 160ms ease, border-color 160ms ease;
}

.page-about .about-band__track > li:nth-child(even) .about-team-card {
  transform: translateY(14px);
}

.page-about .about-team-card:hover,
.page-about .about-team-card:focus-within {
  border-color: var(--lime);
  transform: translateY(-3px);
}

.page-about .card-tag {
  display: block;
}

.page-about .card-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .card-meta {
  margin: 0;
  flex: 1;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .card-data {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--lime);
  align-self: flex-end;
}

/* ---------- 生产流程 ---------- */
.page-about .about-flow__grid {
  display: grid;
  gap: 26px;
}

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

.page-about .about-step {
  padding: 20px 20px 20px 56px;
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
}

.page-about .about-step__num {
  position: absolute;
  top: 18px;
  left: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--lime);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
}

.page-about .about-step h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  font-weight: 700;
}

.page-about .about-step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-shot--flow img {
  aspect-ratio: 3 / 2;
}

.page-about .media-caption {
  display: block;
  padding: 12px 16px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
  background: var(--panel);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 合作版图 ---------- */
.page-about .about-map {
  display: grid;
  gap: 24px;
}

.page-about .about-map__canvas {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--step);
}

.page-about .about-map__dots {
  position: relative;
  height: 190px;
  border-radius: var(--radius-m);
  background-image: radial-gradient(var(--track) 1.4px, transparent 1.5px);
  background-size: 14px 14px;
  background-position: 0 0;
  overflow: hidden;
  clip-path: polygon(0 8%, 24% 0, 52% 6%, 78% 0, 100% 10%, 100% 92%, 72% 100%, 44% 92%, 18% 100%, 0 90%);
}

.page-about .about-map__hot {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 61, 0.55), rgba(200, 255, 61, 0) 72%);
}

.page-about .about-map__hot--a { width: 120px; height: 120px; top: 14%; left: 8%; }
.page-about .about-map__hot--b { width: 92px; height: 92px; top: 46%; left: 32%; background: radial-gradient(circle, rgba(95, 216, 245, 0.5), rgba(95, 216, 245, 0) 72%); }
.page-about .about-map__hot--c { width: 140px; height: 140px; top: 8%; left: 56%; }
.page-about .about-map__hot--d { width: 84px; height: 84px; top: 54%; left: 74%; background: radial-gradient(circle, rgba(255, 106, 31, 0.42), rgba(255, 106, 31, 0) 70%); }
.page-about .about-map__hot--e { width: 96px; height: 96px; top: 62%; left: 14%; background: radial-gradient(circle, rgba(95, 216, 245, 0.42), rgba(95, 216, 245, 0) 72%); }

.page-about .about-map__legend {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--muted);
}

.page-about .about-map__legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-map__key {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.page-about .about-map__key--lime { background: var(--lime); }
.page-about .about-map__key--ice { background: var(--ice); }
.page-about .about-map__key--dot { background: var(--track); }

.page-about .about-map__notes {
  display: grid;
  gap: 14px;
}

.page-about .about-map__note {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
}

.page-about .about-map__note h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ice);
}

.page-about .about-map__note p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-shot--banner {
  margin-top: 24px;
}

.page-about .about-shot--banner img {
  aspect-ratio: 16 / 7;
}

/* ---------- 荣誉 ---------- */
.page-about .about-awards {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .about-award {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px 4px;
  border-top: 1px solid var(--line);
}

.page-about .about-award:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-award__year {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  font-weight: 700;
  color: var(--orange);
}

.page-about .about-award__body {
  margin: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-award__body strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-award__body span {
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: 40px;
  margin-bottom: 64px;
  padding: 30px 22px;
  border-radius: var(--radius-l);
  background:
    radial-gradient(circle at 88% 12%, rgba(200, 255, 61, 0.16), transparent 60%),
    var(--step);
  border: 1px solid var(--line);
}

.page-about .about-cta h2 {
  margin: 0;
  font-size: clamp(1.35rem, 5vw, 2rem);
  font-weight: 800;
  line-height: 1.26;
}

.page-about .about-cta p {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

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

.page-about .btn--primary:hover,
.page-about .btn--primary:focus-visible {
  background: var(--lime-2);
}

.page-about .btn--ghost {
  border-color: var(--line);
  color: var(--white);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .btn--accent {
  background: var(--orange);
  color: var(--ink);
}

.page-about .btn--accent:hover,
.page-about .btn--accent:focus-visible {
  background: #ff8347;
}

.page-about .btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-about .about-profile {
    padding: 24px;
  }

  .page-about .about-timeline {
    padding-left: 34px;
  }

  .page-about .about-timeline::before {
    left: 8px;
    width: 3px;
  }

  .page-about .about-timeline__item::before {
    left: -31px;
    top: 24px;
    width: 13px;
    height: 13px;
  }

  .page-about .about-node__summary {
    padding: 20px 24px;
  }

  .page-about .about-node__year {
    font-size: 1.2rem;
  }

  .page-about .about-node__title {
    font-size: 1.06rem;
  }

  .page-about .about-node__body {
    padding: 0 24px 22px;
  }

  .page-about .about-map__dots {
    height: 260px;
  }

  .page-about .about-map__legend {
    grid-auto-flow: column;
    justify-content: start;
    gap: 22px;
  }

  .page-about .about-award {
    grid-template-columns: 6em 1fr;
    padding: 20px 8px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: 5fr 7fr;
    gap: 46px;
    align-items: start;
    padding-top: 46px;
    padding-bottom: 84px;
  }

  .page-about .about-hero__copy {
    position: sticky;
    top: 96px;
  }

  .page-about .about-block {
    padding: 72px 0;
  }

  .page-about .about-head {
    grid-template-columns: auto 1fr;
    column-gap: 16px;
    align-items: baseline;
    margin-bottom: 44px;
  }

  .page-about .about-head .chapter-num {
    grid-row: span 2;
    align-self: start;
    margin-top: 6px;
  }

  .page-about .about-head__note {
    grid-column: 2;
  }

  .page-about .about-band {
    margin: 0 -24px;
    padding: 0 24px 10px;
  }

  .page-about .about-band__track {
    gap: 22px;
    padding-bottom: 26px;
  }

  .page-about .about-band__track > li {
    width: 300px;
  }

  .page-about .about-flow__grid {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
  }

  .page-about .about-map {
    grid-template-columns: 5fr 7fr;
    gap: 30px;
    align-items: start;
  }

  .page-about .about-map__notes {
    grid-template-columns: 1fr;
  }

  .page-about .about-cta {
    padding: 44px 40px;
    margin-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-profile__row,
  .page-about .about-team-card,
  .page-about .about-node__sign::before,
  .page-about .about-node__sign::after,
  .page-about .btn {
    transition: none;
  }

  .page-about .about-band__track > li:nth-child(even) .about-team-card {
    transform: none;
  }

  .page-about .about-team-card:hover,
  .page-about .about-team-card:focus-within {
    transform: none;
  }
}
<<<END>>>