.page-about {
  --about-cut: 20px;
  --about-gap: clamp(1.25rem, 4vw, 2.5rem);
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-cn);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(1.6rem, 5vw, 3rem) 0 clamp(2.2rem, 6vw, 4.5rem);
  background:
    radial-gradient(65% 55% at 88% 6%, rgba(45, 212, 255, 0.16), transparent 70%),
    radial-gradient(55% 65% at 4% 88%, rgba(168, 85, 247, 0.22), transparent 72%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 5vw, 3.2rem);
  align-items: center;
}

.page-about .about-hero__title {
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: clamp(2.05rem, 8vw, 4.15rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
  margin: 0.55rem 0 1.05rem;
  color: var(--white);
}

.page-about .about-hero__title em {
  font-style: normal;
  display: inline-block;
  background: linear-gradient(96deg, var(--violet), var(--blue) 62%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(0.96rem, 2.4vw, 1.06rem);
}

.page-about .about-hero__actions {
  margin-top: 1.5rem;
}

.page-about .about-hero__note {
  margin: 1.15rem 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--gold);
  padding-left: 0.85rem;
  border-left: 2px solid rgba(246, 199, 106, 0.55);
}

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

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  box-shadow: 0 34px 80px -46px rgba(168, 85, 247, 0.75);
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(45, 212, 255, 0.14), transparent 42%, rgba(11, 6, 20, 0.42));
  pointer-events: none;
}

.page-about .about-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-hero__cap {
  margin-top: 0.7rem;
  font-family: var(--font-geo);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-block {
  padding: clamp(2.4rem, 7vw, 4.6rem) 0;
  position: relative;
}

.page-about .about-head__title {
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin: 0.5rem 0 0.85rem;
  color: var(--white);
}

.page-about .about-head__note {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 0.95rem;
}

/* 时间轴 */
.page-about .about-block--journey {
  background: linear-gradient(180deg, var(--ink), var(--ink-2) 60%, var(--ink));
}

.page-about .timeline {
  list-style: none;
  margin: clamp(1.8rem, 5vw, 3rem) 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.5rem;
  bottom: 1.2rem;
  width: 2px;
  background: linear-gradient(180deg, var(--violet), var(--blue) 58%, rgba(246, 199, 106, 0.55));
  opacity: 0.6;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 2.1rem 2.45rem;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(0.55rem - 5px);
  top: 0.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(45, 212, 255, 0.14), 0 0 14px rgba(45, 212, 255, 0.55);
}

.page-about .timeline__item:last-child::before {
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(246, 199, 106, 0.16), 0 0 16px rgba(246, 199, 106, 0.6);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-geo);
  font-weight: 800;
  font-size: clamp(1.5rem, 6vw, 2.3rem);
  letter-spacing: 0.06em;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(92deg, var(--violet), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-about .timeline__item:last-child .timeline__year {
  background: linear-gradient(92deg, var(--gold), var(--coral));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-about .timeline__title {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--white);
}

.page-about .timeline__body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 54ch;
}

.page-about .journey-figure {
  margin: clamp(1.6rem, 5vw, 2.8rem) 0 0;
}

.page-about .journey-figure__frame {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .journey-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.92;
}

.page-about .journey-figure__cap {
  margin-top: 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 规模数据 */
.page-about .about-block--scale {
  background:
    radial-gradient(50% 45% at 92% 12%, rgba(168, 85, 247, 0.16), transparent 70%),
    var(--ink-2);
}

.page-about .stat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.85rem, 2.6vw, 1.35rem);
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
}

.page-about .stat-card {
  background: linear-gradient(158deg, rgba(30, 20, 51, 0.96), rgba(20, 10, 36, 0.94));
  border: 1px solid var(--line-soft);
  padding: clamp(1rem, 3vw, 1.5rem);
  clip-path: polygon(var(--about-cut) 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%, 0 var(--about-cut));
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .stat-card[open],
.page-about .stat-card:hover {
  border-color: rgba(45, 212, 255, 0.55);
}

.page-about .stat-card:focus-within {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-about .stat-card__head {
  display: block;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 1.6rem;
}

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

.page-about .stat-card__num {
  display: inline-block;
  font-family: var(--font-geo);
  font-weight: 800;
  font-size: clamp(2.1rem, 8vw, 2.9rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .stat-card__unit {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--blue);
  margin-left: 0.25rem;
}

.page-about .stat-card__label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .stat-card__toggle {
  position: absolute;
  right: 0;
  top: 0.2rem;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-about .stat-card__toggle::before,
.page-about .stat-card__toggle::after {
  content: "";
  position: absolute;
  background: var(--blue);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.page-about .stat-card__toggle::before {
  width: 8px;
  height: 1.5px;
}

.page-about .stat-card__toggle::after {
  width: 1.5px;
  height: 8px;
  transition: opacity 0.25s ease;
}

.page-about .stat-card[open] .stat-card__toggle::after {
  opacity: 0;
}

.page-about .stat-card__more {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px dashed rgba(185, 173, 214, 0.22);
}

.page-about .stat-card__more p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.page-about .scale-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3.5vw, 2rem);
  margin-top: clamp(1.8rem, 5vw, 3rem);
  align-items: center;
}

.page-about .scale-visual__media {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-about .scale-visual__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .scale-visual__title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.1rem, 3.2vw, 1.35rem);
  font-weight: 800;
  color: var(--white);
}

.page-about .scale-visual__text p {
  margin: 0 0 0.8rem;
  font-size: 0.92rem;
  color: var(--muted);
}

/* 会员中心 */
.page-about .about-block--members {
  background: linear-gradient(180deg, var(--ink), var(--ink-2));
}

.page-about .member-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 2.4rem);
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
  align-items: start;
}

.page-about .tag-wall {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.page-about .tag-wall__item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.72rem 0.8rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
  background: rgba(30, 20, 51, 0.68);
  border-left: 2px solid var(--violet);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.page-about .tag-wall__item:hover {
  border-left-color: var(--blue);
  background: rgba(45, 212, 255, 0.1);
  transform: translateX(3px);
}

.page-about .tag-wall__idx {
  font-family: var(--font-geo);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .tag-wall__hint {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  padding-left: 0.9rem;
  border-left: 2px solid rgba(45, 212, 255, 0.4);
}

.page-about .member-split__title {
  margin: 0 0 0.9rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--white);
}

.page-about .account-list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.page-about .account-list li {
  font-size: 0.89rem;
  color: var(--muted);
  padding-left: 1rem;
  position: relative;
}

.page-about .account-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 4px;
  height: 4px;
  background: var(--blue);
  border-radius: 50%;
}

.page-about .account-list strong {
  color: var(--white);
  font-weight: 700;
}

/* 生态与荣誉 */
.page-about .about-block--eco {
  background:
    radial-gradient(60% 70% at 88% 50%, rgba(246, 199, 106, 0.12), transparent 70%),
    var(--ink-2);
}

.page-about .eco-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 5vw, 3rem);
  align-items: center;
}

.page-about .eco-copy__title {
  margin: 0.5rem 0 0.9rem;
  font-size: clamp(1.45rem, 4.4vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-about .eco-copy p {
  margin: 0 0 0.85rem;
  font-size: 0.93rem;
  color: var(--muted);
}

.page-about .eco-seal {
  text-align: center;
}

.page-about .eco-seal__ring {
  width: clamp(180px, 52vw, 236px);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: 50%;
  border: 1px solid rgba(246, 199, 106, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  background:
    radial-gradient(circle at 50% 25%, rgba(246, 199, 106, 0.2), transparent 68%),
    rgba(20, 10, 36, 0.7);
  box-shadow: inset 0 0 0 8px rgba(246, 199, 106, 0.07), 0 0 40px -14px rgba(246, 199, 106, 0.5);
  position: relative;
}

.page-about .eco-seal__ring::before {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 1px dashed rgba(246, 199, 106, 0.32);
}

.page-about .eco-seal__mark {
  font-family: var(--font-geo);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  line-height: 1.5;
  color: var(--gold);
}

.page-about .eco-seal__label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  padding: 0 1rem;
}

.page-about .eco-seal__note {
  margin: 1rem 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* V3.1 */
.page-about .about-block--v31 {
  background: linear-gradient(160deg, var(--ink-2), var(--ink) 55%, #0d0718);
  position: relative;
}

.page-about .about-block--v31::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--violet), var(--blue), transparent);
  opacity: 0.7;
}

.page-about .v31-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 2.6rem);
}

.page-about .v31-head__title {
  margin: 0.5rem 0 0;
  font-size: clamp(1.45rem, 4.6vw, 2.3rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-about .v31-lede {
  margin: 0 0 1.3rem;
  font-size: 0.97rem;
  color: var(--white);
  padding: 0.9rem 1rem;
  background: rgba(168, 85, 247, 0.12);
  border-left: 3px solid var(--violet);
}

.page-about .v31-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .v31-list li {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.8rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid rgba(185, 173, 214, 0.12);
}

.page-about .v31-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .v31-list__num {
  font-family: var(--font-geo);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--blue);
  padding-top: 0.22rem;
}

.page-about .v31-list h3 {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--white);
}

.page-about .v31-list p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

/* 收束 */
.page-about .about-close {
  padding: clamp(2.2rem, 6vw, 3.6rem) 0;
  background: linear-gradient(100deg, rgba(168, 85, 247, 0.24), rgba(45, 212, 255, 0.14) 55%, rgba(246, 199, 106, 0.12));
  border-top: 1px solid var(--line);
}

.page-about .about-close__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 3.5vw, 2rem);
  align-items: center;
}

.page-about .about-close__title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.25rem, 4vw, 1.85rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-close__text p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.page-about .about-close__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

@media (min-width: 720px) {
  .page-about .tag-wall {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-close__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }

  .page-about .about-close__acts {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(2rem, 5vw, 3.6rem);
  }

  .page-about .timeline__item {
    display: grid;
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: clamp(1rem, 3vw, 2rem);
    padding-left: 2.8rem;
    padding-bottom: clamp(1.8rem, 4vw, 2.6rem);
  }

  .page-about .timeline__year {
    margin-bottom: 0;
    text-align: right;
  }

  .page-about .scale-visual {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

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

  .page-about .eco-wrap {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  }

  .page-about .v31-wrap {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(2rem, 5vw, 3.4rem);
    align-items: start;
  }

  .page-about .v31-head__title {
    position: sticky;
    top: 1.5rem;
  }
}

@media (min-width: 1080px) {
  .page-about .stat-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .stat-card:nth-child(1) {
    grid-column: span 2;
  }

  .page-about .stat-card:nth-child(2) {
    grid-column: span 2;
  }

  .page-about .stat-card:nth-child(3) {
    grid-column: span 2;
  }

  .page-about .stat-card:nth-child(4) {
    grid-column: span 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .stat-card,
  .page-about .tag-wall__item,
  .page-about .stat-card__toggle::after {
    transition: none;
  }

  .page-about .tag-wall__item:hover {
    transform: none;
  }
}
<<<END>>>