.page-about {
  --about-line: rgba(159, 180, 199, 0.18);
  --about-pad: clamp(56px, 7.5vw, 100px);
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

.page-about .about-accent {
  color: var(--lime);
}

.page-about .about-inline-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 255, 90, 0.4);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-inline-link:hover {
  color: var(--lime-soft);
  border-bottom-color: var(--lime-soft);
}

/* ---------- Hero ---------- */

.page-about .about-hero {
  position: relative;
  padding-top: clamp(24px, 3.4vw, 40px);
  padding-bottom: clamp(44px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(124, 255, 90, 0.12), transparent 58%),
    linear-gradient(180deg, var(--surface), var(--ink) 72%);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  margin-top: clamp(20px, 3vw, 38px);
}

.page-about .about-hero__copy h1 {
  margin: 10px 0 0;
}

.page-about .about-hero__copy .lede {
  margin-top: 20px;
  max-width: 34em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__meta > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero__meta dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-hero__meta dd {
  margin: 0;
  font-size: 13px;
  color: var(--lime);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 96px;
  height: 96px;
  border-right: 2px solid var(--lime);
  border-bottom: 2px solid var(--lime);
  border-radius: 0 0 18px 0;
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-hero__figure .media-caption {
  margin-top: 12px;
}

/* ---------- 起点 ---------- */

.page-about .about-day {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
}

.page-about .about-day__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-day__copy h2 {
  margin: 10px 0 18px;
}

.page-about .about-day__copy p {
  max-width: 36em;
  margin: 0 0 14px;
  line-height: 1.78;
  color: var(--text);
}

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

.page-about .about-clock {
  position: relative;
  padding: 22px 22px 6px;
  background: var(--surface);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
}

.page-about .about-clock::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 4px;
  border-radius: 4px;
  background: var(--lime);
}

.page-about .about-clock__title {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .about-clock__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-clock__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-clock__list span {
  display: block;
  font-size: 12px;
  color: var(--lime);
  letter-spacing: 0.04em;
}

.page-about .about-clock__list p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 团队 ---------- */

.page-about .about-teams {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  background: linear-gradient(180deg, var(--ink), rgba(12, 35, 26, 0.72) 45%, var(--ink));
}

.page-about .about-teams__head h2 {
  margin: 10px 0 14px;
}

.page-about .about-teams__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-about .about-team {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--surface);
  border: 1px solid var(--about-line);
  border-left: 4px solid var(--lime);
  border-radius: var(--radius);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-team:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 255, 90, 0.45);
}

.page-about .about-team__num {
  display: block;
  font-size: clamp(38px, 6vw, 54px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .about-team__name {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-about .about-team p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-about .about-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(30px, 4vw, 46px);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
}

.page-about .about-flow span {
  padding: 7px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}

.page-about .about-flow .about-flow__arrow {
  padding: 0;
  border: 0;
  color: var(--lime);
}

/* ---------- 三道关 ---------- */

.page-about .about-check {
  position: relative;
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  overflow: hidden;
  background: linear-gradient(180deg, var(--ink), var(--mid));
}

.page-about .about-check__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-check__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  filter: saturate(0.6);
}

.page-about .about-check__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 17, 13, 0.88), rgba(6, 17, 13, 0.66));
}

.page-about .about-check .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-check__head h2 {
  margin: 10px 0 14px;
}

.page-about .about-check__list {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-about .about-check__list::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), rgba(124, 255, 90, 0.06));
}

.page-about .about-check__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-about .about-check__idx {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid rgba(124, 255, 90, 0.45);
  color: var(--lime);
  font-size: 15px;
  font-weight: 700;
}

.page-about .about-check__body h3 {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-check__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
}

.page-about .about-check__who {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--about-line);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 版本时间线 ---------- */

.page-about .about-version {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  background: var(--ink);
}

.page-about .about-version__head h2 {
  margin: 10px 0 14px;
}

.page-about .about-version__figure {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

.page-about .about-strip {
  margin-top: clamp(22px, 3vw, 32px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-strip::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-strip::-webkit-scrollbar-thumb {
  background: rgba(159, 180, 199, 0.3);
  border-radius: 999px;
}

.page-about .about-strip__track {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 4px max(var(--gutter), calc((100% - 1180px) / 2)) 18px;
  width: max-content;
}

.page-about .about-vnode {
  flex: 0 0 auto;
  width: min(78vw, 320px);
  scroll-snap-align: start;
  padding: 18px 18px 20px;
  background: var(--surface);
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--steel);
  border-radius: var(--radius);
  transition: border-color 0.24s var(--ease);
}

.page-about .about-vnode--current {
  background: var(--mid);
  border-top-color: var(--lime);
}

.page-about .about-vnode summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-vnode summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-about .about-vnode__ver {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--steel);
}

.page-about .about-vnode--current .about-vnode__ver {
  color: var(--lime);
}

.page-about .about-vnode__year {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-about .about-vnode__title {
  flex-basis: 100%;
  margin-top: 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-about .about-vnode p {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--about-line);
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

.page-about .about-version__note {
  margin: 8px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 规模 ---------- */

.page-about .about-scale {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  background: linear-gradient(180deg, rgba(12, 35, 26, 0.85), var(--ink));
  border-top: 1px solid var(--about-line);
}

.page-about .about-scale__head h2 {
  margin: 10px 0 0;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 3.4vw, 40px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 18px;
  background: var(--surface);
}

.page-about .about-stat__n {
  font-size: clamp(28px, 4.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .about-stat__u {
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

.page-about .about-stats__note {
  margin: 22px 0 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */

.page-about .about-eco {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  background:
    radial-gradient(70% 60% at 22% 40%, rgba(27, 74, 87, 0.5), transparent 70%),
    var(--ink);
}

.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4.5vw, 56px);
  align-items: center;
}

.page-about .about-rings {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-rings__ring {
  fill: none;
  stroke: rgba(159, 180, 199, 0.22);
  stroke-width: 1;
}

.page-about .about-rings__ring--mid {
  stroke-dasharray: 4 7;
}

.page-about .about-rings__core {
  fill: rgba(124, 255, 90, 0.12);
  stroke: var(--lime);
  stroke-width: 1.5;
}

.page-about .about-rings__dot {
  fill: var(--lime);
}

.page-about .about-rings__dot--steel {
  fill: var(--steel);
}

.page-about .about-rings__dot--orange {
  fill: var(--orange);
}

.page-about .about-eco__copy h2 {
  margin: 10px 0 14px;
}

.page-about .about-eco__copy > p {
  max-width: 34em;
  margin: 0 0 20px;
  line-height: 1.78;
}

.page-about .about-eco__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-eco__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-eco__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-eco__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-eco__list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

/* ---------- 后续路径 ---------- */

.page-about .about-next {
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-next h2 {
  margin: 0;
}

.page-about .about-next__list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-size: 16px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-next__link:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
}

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

.page-about .about-next__hint {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-about .about-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }

  .page-about .about-day__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-teams__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-teams__grid .about-team:nth-child(2) {
    margin-top: 22px;
  }

  .page-about .about-teams__grid .about-team:nth-child(3) {
    margin-top: 8px;
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  }

  .page-about .about-check__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 26px;
  }

  .page-about .about-check__idx {
    width: 64px;
    height: 64px;
    font-size: 16px;
  }

  .page-about .about-check__list::before {
    left: 31px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team,
  .page-about .about-next__link {
    transition: none;
  }

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