.page-about {
  --about-rule: rgba(143, 166, 156, .16);
  --about-rule-soft: rgba(143, 166, 156, .08);
  --about-lime-glow: rgba(200, 255, 61, .14);
  background: var(--ink-900);
  color: var(--snow);
  overflow-x: hidden;
}

.page-about .breadcrumbs {
  padding-top: calc(var(--topbar-h) + 1.6rem);
  padding-bottom: .4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .breadcrumbs a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--snow);
}

.page-about section {
  scroll-margin-top: calc(var(--topbar-h) + 1.5rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 1.2rem;
  padding-bottom: clamp(2rem, 4vw, 3.4rem);
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -6rem;
  right: -8rem;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 61, .1), transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.8rem;
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: .55rem 0 1rem;
  text-wrap: balance;
}

.page-about .about-hero__lead .lede {
  max-width: 46ch;
  color: rgba(244, 248, 242, .82);
  font-size: 1rem;
  line-height: 1.85;
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.5rem;
}

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

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 90px 16px 16px 16px;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-hero__caption {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  margin-top: .85rem;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-hero__caption .score {
  color: var(--lime);
  font-size: 1.15rem;
}

.page-about .about-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2.2rem;
  background: var(--about-rule);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-fact {
  background: var(--ink-900);
  padding: 1rem .85rem;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-about .about-fact__label {
  font-size: .78rem;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 章节标题组 ---------- */
.page-about .about-head {
  display: grid;
  gap: .55rem;
  margin-bottom: clamp(1.6rem, 3vw, 2.4rem);
  max-width: 60ch;
}

.page-about .about-head--inline {
  margin-bottom: 1.4rem;
}

.page-about .about-head__num {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.55rem, 4vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}

.page-about .about-head__sub {
  margin: 0;
  font-size: .96rem;
  line-height: 1.85;
  color: rgba(244, 248, 242, .7);
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.12rem;
  line-height: 1.45;
  letter-spacing: .01em;
  margin: 0 0 .5rem;
  color: var(--snow);
}

/* ---------- 为什么 ---------- */
.page-about .about-why {
  border-top: 1px solid var(--about-rule-soft);
}

.page-about .about-why__grid {
  display: grid;
  gap: 1rem;
}

.page-about .about-scene {
  position: relative;
  background: var(--ink-800);
  border-radius: 4px 22px 22px 22px;
  padding: 1.35rem 1.25rem 1.5rem;
  border-top: 2px solid rgba(200, 255, 61, .45);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-scene:hover {
  transform: translateY(-4px);
  border-top-color: var(--lime);
}

.page-about .about-scene__tag {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-about .about-scene p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: rgba(244, 248, 242, .78);
}

.page-about .about-why__link {
  margin: 1.8rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-why__link a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .4);
  transition: border-color .18s var(--ease);
}

.page-about .about-why__link a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 三条准则 ---------- */
.page-about .about-rules__board {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--about-rule);
  border-radius: 6px 30px 30px 30px;
  padding: clamp(1rem, 3vw, 1.75rem);
  background: linear-gradient(158deg, rgba(22, 51, 43, .92), rgba(11, 31, 26, .96));
}

.page-about .about-board {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: .75;
}

.page-about .about-rules__list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .35rem;
}

.page-about .about-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .9rem;
  padding: 1.15rem .8rem;
  border-bottom: 1px dashed var(--about-rule);
  border-radius: 12px;
  transition: background .2s var(--ease);
}

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

.page-about .about-rule:hover {
  background: var(--about-lime-glow);
}

.page-about .about-rule__num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  padding-top: .1rem;
}

.page-about .about-rule__body p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: rgba(244, 248, 242, .78);
}

.page-about .about-rule__scene {
  display: block;
  margin-top: .65rem;
  font-size: .8rem;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--mist);
  opacity: .7;
  transition: opacity .2s var(--ease), color .2s var(--ease);
}

.page-about .about-rule:hover .about-rule__scene {
  opacity: 1;
  color: var(--lime);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--about-rule-soft);
}

.page-about .about-team__grid {
  display: grid;
  gap: 1.8rem;
}

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

.page-about .about-team__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px 16px 16px 72px;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-team__caption {
  display: block;
  margin-top: .75rem;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--mist);
}

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

.page-about .about-role {
  padding: .95rem 0 .95rem 1.15rem;
  border-left: 2px solid rgba(143, 166, 156, .22);
  border-bottom: 1px solid var(--about-rule-soft);
  transition: border-left-color .2s var(--ease);
}

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

.page-about .about-role:hover {
  border-left-color: var(--lime);
}

.page-about .about-role h3 {
  font-size: 1rem;
  margin-bottom: .3rem;
}

.page-about .about-role p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.8;
  color: rgba(244, 248, 242, .72);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, transparent, rgba(7, 17, 14, .55));
}

.page-about .about-timeline__grid {
  display: grid;
  gap: 1.8rem;
}

.page-about .about-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-stage {
  position: relative;
  display: grid;
  grid-template-columns: 2.3rem minmax(0, 1fr);
  gap: .9rem;
  padding-bottom: 1.5rem;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: 1.14rem;
  top: 2.35rem;
  bottom: 0;
  width: 1px;
  background: repeating-linear-gradient(
    to bottom,
    rgba(200, 255, 61, .4) 0 6px,
    transparent 6px 13px
  );
}

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

.page-about .about-stage:last-child::before {
  display: none;
}

.page-about .about-stage__mark {
  width: 2.3rem;
  height: 2.3rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(200, 255, 61, .4);
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  position: relative;
  z-index: 1;
}

.page-about .about-stage__body h3 {
  font-size: 1rem;
  margin-bottom: .35rem;
  padding-top: .35rem;
}

.page-about .about-stage__body p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.8;
  color: rgba(244, 248, 242, .72);
}

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

.page-about .about-timeline__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 72px 16px 16px 16px;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-timeline__caption {
  display: block;
  margin-top: .75rem;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 生态 ---------- */
.page-about .about-eco {
  border-top: 1px solid var(--about-rule-soft);
}

.page-about .about-eco__grid {
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
  border-radius: 4px 26px 26px 26px;
  overflow: hidden;
}

.page-about .about-eco__item {
  background: var(--ink-900);
  padding: 1.3rem 1.15rem 1.45rem;
  transition: background .2s var(--ease);
}

.page-about .about-eco__item:hover {
  background: var(--ink-800);
}

.page-about .about-eco__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  margin: 0 0 .55rem;
}

.page-about .about-eco__item h3 {
  font-size: .98rem;
  margin-bottom: .4rem;
}

.page-about .about-eco__item p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.8;
  color: rgba(244, 248, 242, .7);
}

/* ---------- 结尾 CTA ---------- */
.page-about .about-cta {
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  border-radius: 30px 6px 30px 30px;
  padding: clamp(1.6rem, 4vw, 2.8rem);
  background: linear-gradient(140deg, rgba(22, 51, 43, .95), rgba(7, 17, 14, .98));
  border: 1px solid rgba(200, 255, 61, .22);
}

.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  right: -4rem;
  bottom: -5rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 44, .16), transparent 70%);
  pointer-events: none;
}

.page-about .about-cta__inner > * {
  position: relative;
  z-index: 1;
}

.page-about .about-cta h2 {
  margin: .5rem 0 0;
  max-width: 26ch;
}

.page-about .about-cta__text {
  margin: 1rem 0 0;
  max-width: 54ch;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(244, 248, 242, .78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-fact {
    padding: 1.15rem 1rem;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(1.6rem, 3.5vw, 3rem);
    align-items: start;
  }

  .page-about .about-hero__visual {
    margin-top: 1.6rem;
  }

  .page-about .about-why__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
    align-items: start;
  }

  .page-about .about-scene:nth-child(2) {
    margin-top: 1.8rem;
  }

  .page-about .about-scene:nth-child(3) {
    margin-top: .7rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(1.6rem, 3.5vw, 3rem);
    align-items: center;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(1.6rem, 3.5vw, 3rem);
    align-items: start;
  }

  .page-about .about-timeline__visual {
    margin-top: 2.4rem;
  }

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

  .page-about .about-rule {
    padding: 1.35rem 1rem;
    gap: 1.4rem;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__lead .lede {
    font-size: 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scene:hover,
  .page-about .about-rule:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>