.page-about {
  --about-rule: rgba(244, 240, 230, 0.14);
  --about-sticky: calc(var(--header-h) + 2rem);
  background: var(--ink-deep);
  color: var(--warm-white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .about-crumb {
  padding-top: calc(var(--header-h) + 1.25rem);
}
.page-about .about-crumb .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.page-about .about-crumb .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 0.35rem;
  color: var(--orange-volt);
}
.page-about .about-crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}
.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--cyan-signal);
  border-bottom-color: currentColor;
}
.page-about .about-crumb [aria-current="page"] {
  color: var(--warm-white);
}

/* 首屏 */
.page-about .about-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}
.page-about .about-hero__media {
  position: relative;
  margin: 0;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  clip-path: polygon(0 2%, 100% 0, 100% 98%, 0 100%);
}
.page-about .about-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-hero__media .media-frame__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(46, 242, 208, 0.07) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(46, 242, 208, 0.07) 0 1px, transparent 1px 44px),
    linear-gradient(180deg, rgba(5, 28, 22, 0.12) 28%, rgba(5, 28, 22, 0.9) 100%);
}
.page-about .about-hero__media .media-frame__caption {
  position: absolute;
  left: 0.9rem;
  bottom: 0.85rem;
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--cyan-soft);
}
.page-about .about-hero__title {
  margin: 0.55rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 8vw, 4.9rem);
  line-height: 0.96;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.page-about .about-hero__mark {
  color: var(--orange-volt);
  position: relative;
}
.page-about .about-hero__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 0.08em;
  background: var(--cyan-signal);
  opacity: 0.7;
}
.page-about .about-hero__lede {
  max-width: 54ch;
  color: var(--warm-white);
}
.page-about .about-hero__meta {
  margin: 1.5rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--cyan-signal);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-about .about-hero__meta .data-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1rem;
  color: var(--cyan-soft);
}

/* 引文 */
.page-about .about-pull {
  display: grid;
  gap: 1.25rem;
  padding-block: clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}
.page-about .about-pull__text {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.25rem, 3vw, 1.95rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--warm-white);
}
.page-about .about-pull__sign {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan-signal);
}

/* 时间线 */
.page-about .about-timeline {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}
.page-about .about-timeline__range {
  margin: 0.5rem 0 0.85rem;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  letter-spacing: -0.02em;
  color: var(--cyan-signal);
}
.page-about .about-timeline__axisnote {
  margin: 0;
  padding-left: 0.85rem;
  border-left: 1px solid var(--about-rule);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-timeline__list {
  position: relative;
  display: grid;
  gap: 1.85rem;
  margin: 0;
  padding: 0 0 0 1.4rem;
  list-style: none;
}
.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-signal) 0%, rgba(46, 242, 208, 0.32) 45%, rgba(46, 242, 208, 0.04) 100%);
}
.page-about .about-timeline__item {
  position: relative;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -1.4rem;
  top: 0.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--cyan-signal);
}
.page-about .about-timeline__item:last-child::before {
  border-color: var(--orange-volt);
  background: var(--orange-volt);
}
.page-about .about-timeline__year {
  margin: 0 0 0.3rem;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  color: var(--orange-volt);
}
.page-about .about-timeline__head {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--warm-white);
}
.page-about .about-timeline__body {
  margin: 0;
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

/* 焕新版 */
.page-about .about-refresh {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--about-rule);
}
.page-about .about-refresh__title {
  margin: 0.5rem 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.page-about .about-refresh__lede {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-changes {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}
.page-about .about-changes__item {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.9rem;
  padding: 1.15rem 1rem;
  background: var(--ink-panel);
  transition: background var(--speed) var(--ease);
}
.page-about .about-changes__item:hover {
  background: var(--ink-raised);
}
.page-about .about-changes__idx {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cyan-signal);
  line-height: 1.5;
}
.page-about .about-changes__head {
  margin: 0 0 0.4rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--warm-white);
}
.page-about .about-changes__text p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-refresh__note {
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  max-width: 66ch;
}
.page-about .about-refresh__note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--warm-white);
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--about-rule);
}
.page-about .about-team__title {
  margin: 0.5rem 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}
.page-about .about-team__intro {
  margin: 0;
  max-width: 56ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-team__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
}
.page-about .about-team__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .about-team__media .media-frame__caption {
  position: absolute;
  right: 0.85rem;
  bottom: 0.75rem;
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: var(--cyan-soft);
}
.page-about .about-roles {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-roles__item {
  padding: 0.95rem 1rem;
  background: var(--ink-panel);
  border-left: 2px solid var(--cyan-signal);
}
.page-about .about-roles__name {
  margin: 0 0 0.3rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--cyan-soft);
}
.page-about .about-roles__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-gates {
  display: grid;
  gap: 0.55rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: gate;
}
.page-about .about-gates li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  background: var(--ink-raised);
  font-size: 0.88rem;
  line-height: 1.7;
}
.page-about .about-gates li::before {
  counter-increment: gate;
  content: "0" counter(gate);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--orange-volt);
}
.page-about .about-gates strong {
  color: var(--warm-white);
  font-weight: 700;
}
.page-about .about-gates span {
  grid-column: 2;
  color: var(--mist);
}

/* 内容规模 */
.page-about .about-numbers {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--about-rule);
}
.page-about .about-numbers__title {
  margin: 0.5rem 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}
.page-about .about-numbers__lede {
  margin: 0 0 clamp(1.5rem, 3.5vw, 2.25rem);
  max-width: 56ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-stats {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}
.page-about .about-stat {
  background: var(--ink-panel);
}
.page-about .about-stat summary {
  position: relative;
  display: grid;
  gap: 0.25rem;
  padding: 1.15rem 1.05rem;
  cursor: pointer;
  list-style: none;
  transition: background var(--speed) var(--ease);
}
.page-about .about-stat summary::-webkit-details-marker {
  display: none;
}
.page-about .about-stat summary:hover,
.page-about .about-stat summary:focus-visible {
  background: var(--ink-raised);
  outline: 2px solid var(--cyan-signal);
  outline-offset: -2px;
}
.page-about .about-stat summary::after {
  content: "+";
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  font-family: var(--font-data);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--cyan-signal);
}
.page-about .about-stat details[open] summary::after {
  content: "–";
  color: var(--orange-volt);
}
.page-about .about-stat__num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--warm-white);
}
.page-about .about-stat__label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.page-about .about-stat__body {
  margin: 0;
  padding: 0.85rem 1.05rem 1.2rem;
  border-top: 1px dashed var(--about-rule);
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--mist);
}

/* 社群与认可 */
.page-about .about-community {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--about-rule);
}
.page-about .about-community__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 3%, 100% 0, 100% 97%, 0 100%);
}
.page-about .about-community__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}
.page-about .about-community__media .media-frame__caption {
  position: absolute;
  left: 0.85rem;
  bottom: 0.75rem;
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: var(--cyan-soft);
}
.page-about .about-community__title {
  margin: 0.5rem 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4.8vw, 2.85rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}
.page-about .about-community__text {
  margin: 0 0 1.35rem;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-community__list {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-community__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.7rem 0 0.7rem 0.9rem;
  border-left: 2px solid var(--orange-volt);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--mist);
}
.page-about .about-community__list strong {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--orange-volt);
  font-variant-numeric: tabular-nums;
}

/* 下一步 */
.page-about .about-cta {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 7vw, 5rem);
}
.page-about .about-cta__panel {
  position: relative;
  padding: clamp(1.6rem, 4vw, 3rem);
  background: var(--ink-panel);
  border: 1px solid var(--about-rule);
  overflow: hidden;
}
.page-about .about-cta__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--orange-volt), var(--orange-deep));
}
.page-about .about-cta__title {
  margin: 0.5rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}
.page-about .about-cta__text {
  margin: 0 0 1.6rem;
  max-width: 58ch;
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.5rem;
}
.page-about .about-cta__actions .btn {
  text-decoration: none;
}
.page-about .about-cta__note {
  margin: 0;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--about-rule);
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--mist);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team__aside {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: end;
  }
  .page-about .about-hero__body {
    padding-bottom: 0.5rem;
  }
  .page-about .about-pull {
    grid-template-columns: minmax(0, 2.3fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-about .about-pull__sign {
    text-align: right;
  }
  .page-about .about-timeline {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-timeline__axis {
    position: sticky;
    top: var(--about-sticky);
  }
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }
  .page-about .about-team__lede {
    grid-column: 1 / -1;
  }
  .page-about .about-community {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-community {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>