.page-about {
  --about-paper-ink: #0C1220;
  --about-paper-mute: rgba(12, 18, 32, .68);
  --about-paper-line: rgba(12, 18, 32, .14);
  --about-node-ring: rgba(34, 224, 214, .22);
  background: var(--ink-900);
  color: var(--mist);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb-wrap {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .8125rem;
  letter-spacing: .04em;
}

.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: .5rem;
  color: rgba(184, 194, 217, .45);
}

.page-about .breadcrumb-link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  border-bottom-color: var(--neon);
}

.page-about .breadcrumb-current {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.25rem) 0 clamp(2rem, 6vw, 4rem);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(760px, 82vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(122, 92, 255, .22), rgba(34, 224, 214, .10) 45%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: center;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .about-hero h1 {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 6.4vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: 0 0 1.6rem;
  max-width: 34em;
  font-size: clamp(.95rem, 1.8vw, 1.0625rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.85rem;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  margin: 0;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.page-about .about-hero__fact dt {
  font-size: .75rem;
  letter-spacing: .1em;
  color: rgba(184, 194, 217, .78);
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--amber);
  letter-spacing: .02em;
}

.page-about .about-hero__media .media {
  border-radius: var(--r-xl);
}

/* ---------- 章节索引条 ---------- */
.page-about .about-index {
  position: relative;
  z-index: 2;
  padding: .35rem 0 1.6rem;
}

.page-about .about-index .index-list {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 0 0 .35rem;
  scrollbar-width: thin;
}

.page-about .about-index .index-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  flex: 0 0 auto;
  padding: .5rem .95rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .25s var(--ease), color .25s var(--ease), background-color .25s var(--ease);
}

.page-about .about-index .index-num {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--neon);
}

.page-about .about-index .index-link:hover,
.page-about .about-index .index-link:focus-visible {
  border-color: var(--line-strong);
  color: var(--paper);
  background: var(--neon-dim);
}

/* ---------- 章节通用头部 ---------- */
.page-about .chapter-head {
  max-width: 46rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .chapter-index {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .18em;
  color: var(--neon);
}

.page-about .chapter-title {
  margin: 0 0 .85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.2vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .chapter-lead {
  margin: 0;
  font-size: clamp(.9375rem, 1.8vw, 1.0625rem);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 纸感叙事章 ---------- */
.page-about .about-paper-wrap {
  padding: clamp(1rem, 3vw, 2rem) 0 clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-paper {
  background: var(--paper);
  color: var(--about-paper-ink);
  border-radius: var(--r-xl);
  padding: clamp(1.6rem, 5.5vw, 3.5rem);
}

.page-about .about-paper .chapter-index {
  color: var(--teal-deep);
}

.page-about .about-paper .chapter-title {
  color: var(--about-paper-ink);
}

.page-about .about-paper .chapter-lead {
  color: var(--about-paper-mute);
}

.page-about .about-paper__body {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-paper .prose {
  max-width: 38em;
  font-size: clamp(.95rem, 1.75vw, 1.0625rem);
  line-height: 1.9;
  color: var(--about-paper-ink);
}

.page-about .about-paper .prose p {
  margin: 0 0 1.15rem;
}

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

.page-about .about-paper__aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .about-num-block {
  display: grid;
  gap: .25rem;
  margin: 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--about-paper-line);
  border-left: 3px solid var(--teal-deep);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(12, 18, 32, .04);
}

.page-about .about-num-block__value {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  line-height: 1;
  color: var(--about-paper-ink);
  letter-spacing: .02em;
}

.page-about .about-num-block__label {
  font-size: .875rem;
  font-weight: 700;
  color: var(--about-paper-ink);
}

.page-about .about-num-block__note {
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--about-paper-mute);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  padding: clamp(2.25rem, 7vw, 4.5rem) 0;
}

.page-about .about-roles {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 1fr;
}

.page-about .about-role {
  position: relative;
  padding: 1.5rem 1.4rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .about-role::after {
  content: "";
  position: absolute;
  inset: auto auto -60px -60px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 224, 214, .16), transparent 70%);
  pointer-events: none;
}

.page-about .about-role__tag {
  margin: 0 0 .85rem;
  display: inline-block;
  padding: .25rem .7rem;
  border-radius: var(--pill);
  background: var(--violet-dim);
  color: var(--neon);
  font-size: .75rem;
  letter-spacing: .08em;
}

.page-about .about-role__title {
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.25rem);
  color: var(--paper);
}

.page-about .about-role__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 版本纪元 ---------- */
.page-about .about-era {
  position: relative;
  padding: clamp(2.5rem, 8vw, 5rem) 0;
  overflow: hidden;
}

.page-about .about-era__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .3;
  pointer-events: none;
}

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

.page-about .about-era__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--ink-900) 0%, rgba(5, 7, 14, .5) 42%, var(--ink-900) 100%);
}

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

.page-about .about-era .chapter-title {
  text-shadow: 0 0 22px rgba(34, 224, 214, .16);
}

.page-about .about-era__stats {
  margin-bottom: clamp(2rem, 6vw, 3rem);
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(12, 18, 32, .72);
  backdrop-filter: blur(6px);
}

.page-about .about-era__stats .stat {
  display: grid;
  gap: .3rem;
}

.page-about .about-era__stats .stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  line-height: 1.1;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-about .about-era__stats .stat-label {
  font-size: .875rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-era__stats .stat-note {
  font-size: .8125rem;
  line-height: 1.7;
  color: rgba(184, 194, 217, .82);
}

/* ---------- 纵向时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: .35rem 0 .35rem clamp(1.5rem, 5vw, 2.5rem);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: clamp(.3rem, 1.2vw, .55rem);
  top: .6rem;
  bottom: .6rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--neon), var(--violet) 55%, var(--teal-deep));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(1.35rem, 4vw, 2rem);
}

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

.page-about .about-timeline__node {
  position: absolute;
  left: calc(clamp(1.5rem, 5vw, 2.5rem) * -1 + clamp(.3rem, 1.2vw, .55rem) - 5px);
  top: .45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--neon);
  box-shadow: 0 0 0 4px var(--about-node-ring);
}

.page-about .about-timeline__item--current .about-timeline__node {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 154, 60, .22);
}

.page-about .about-timeline__ver {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: .9375rem;
  letter-spacing: .06em;
  color: var(--neon);
}

.page-about .about-timeline__item--current .about-timeline__ver {
  color: var(--amber);
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 36em;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 内容生态 ---------- */
.page-about .about-eco {
  padding: clamp(2.25rem, 7vw, 4.5rem) 0;
}

.page-about .about-eco__grid {
  gap: clamp(1rem, 3vw, 1.5rem);
}

.page-about .about-eco__card {
  padding: 1.5rem 1.4rem 1.7rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
}

.page-about .about-eco__card--alt {
  background: var(--ink-700);
  border-color: rgba(122, 92, 255, .35);
}

.page-about .about-eco__num {
  margin: 0 0 .55rem;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 8vw, 3.2rem);
  line-height: 1;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-about .about-eco__num span {
  font-size: .4em;
  margin-left: .25em;
  color: var(--neon);
  letter-spacing: .04em;
}

.page-about .about-eco__title {
  margin: 0 0 .65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.2rem);
  color: var(--paper);
}

.page-about .about-eco__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-eco__text a {
  color: var(--neon);
}

/* ---------- 服务响应 ---------- */
.page-about .about-service-wrap {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.25rem, 7vw, 4rem);
}

.page-about .about-service {
  display: grid;
  gap: clamp(1.5rem, 5vw, 2.75rem);
  padding: clamp(1.6rem, 5.5vw, 3.25rem);
  border-radius: var(--r-xl);
  background: var(--paper);
  color: var(--about-paper-ink);
}

.page-about .about-service .chapter-index {
  color: var(--teal-deep);
}

.page-about .about-service .chapter-title {
  color: var(--about-paper-ink);
}

.page-about .about-service .chapter-lead {
  color: var(--about-paper-mute);
}

.page-about .about-service__list {
  list-style: none;
  margin: 0 0 1.35rem;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-about .about-service__item {
  display: grid;
  gap: .25rem;
  padding: .95rem 1.1rem;
  border: 1px solid var(--about-paper-line);
  border-radius: var(--r-md);
  background: rgba(12, 18, 32, .035);
}

.page-about .about-service__key {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  color: #B25A00;
  letter-spacing: .02em;
}

.page-about .about-service__val {
  font-size: .875rem;
  line-height: 1.75;
  color: var(--about-paper-mute);
}

.page-about .about-service__hint {
  margin: 0 0 1.35rem;
  max-width: 36em;
  font-size: .875rem;
  line-height: 1.85;
  color: var(--about-paper-mute);
}

.page-about .about-service__cta {
  margin: 0;
}

.page-about .about-service__media .media {
  border-radius: var(--r-lg);
}

.page-about .about-service__media .media__caption {
  color: rgba(12, 18, 32, .7);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor {
  padding: clamp(2.25rem, 7vw, 4.5rem) 0 clamp(2.75rem, 8vw, 5rem);
}

.page-about .about-honor__grid {
  display: grid;
  gap: clamp(1rem, 3vw, 1.5rem);
  grid-template-columns: 1fr;
  margin-bottom: clamp(1.75rem, 5vw, 2.5rem);
}

.page-about .about-honor__item {
  position: relative;
  padding: 1.5rem 1.4rem 1.7rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(122, 92, 255, .14), rgba(12, 18, 32, .9) 55%);
}

.page-about .about-honor__tag {
  margin: 0 0 .8rem;
  display: inline-block;
  padding: .25rem .7rem;
  border-radius: var(--pill);
  border: 1px solid rgba(255, 154, 60, .45);
  color: var(--amber);
  font-size: .75rem;
  letter-spacing: .08em;
}

.page-about .about-honor__title {
  margin: 0 0 .65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.8vw, 1.3rem);
  color: var(--paper);
}

.page-about .about-honor__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-honor__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-honor__item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-about .about-paper__body {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .about-service {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (min-width: 1020px) {
  .page-about .about-eco__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .about-eco__card.span-5 {
    grid-column: span 5;
  }

  .page-about .about-eco__card.span-7 {
    grid-column: span 7;
  }

  .page-about .about-eco__card.span-5.from-8 {
    grid-column: 8 / span 5;
  }

  .page-about .about-eco__card.span-7.from-6 {
    grid-column: 6 / span 7;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .breadcrumb-link,
  .page-about .about-index .index-link {
    transition: none;
  }
}
<<<END>>>