.page-about {
  position: relative;
  display: block;
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 55% at 84% -8%, rgba(124, 250, 74, 0.09), transparent 62%),
    radial-gradient(80% 45% at -8% 26%, rgba(53, 224, 208, 0.07), transparent 60%),
    linear-gradient(rgba(34, 48, 74, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 48, 74, 0.5) 1px, transparent 1px);
  background-size: auto, auto, 88px 88px, 88px 88px;
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
  padding-block: clamp(20px, 3vw, 40px) clamp(64px, 9vw, 128px);
}

.page-about .about-sec {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: clamp(20px, 3vw, 36px);
}

.page-about .about-crumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-crumb a:hover {
  color: var(--neon);
  border-color: var(--neon);
}

.page-about .about-crumb__sep {
  color: var(--line);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: 0 clamp(48px, 7vw, 92px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__spine {
  display: none;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--muted);
  margin: 0;
  padding-block: 4px;
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

.page-about .about-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--neon);
  font-family: var(--font-mono);
}

.page-about .about-hero__tag::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--neon);
}

.page-about .about-hero__title {
  margin: 0 0 22px;
  font-size: clamp(34px, 7.4vw, 78px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(24px, 4vw, 40px);
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(242, 231, 213, 0.86);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__fact {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__fnum {
  flex: 0 0 auto;
  min-width: 4.6em;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 500;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-about .about-hero__flabel {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
  background: var(--surface);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(0.92) contrast(1.06);
}

.page-about .about-hero__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 16px;
  background: rgba(11, 12, 16, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 区块标题 ---------- */
.page-about .about-shead {
  display: flex;
  align-items: flex-start;
  gap: clamp(12px, 2vw, 24px);
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-about .about-shead::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 2px;
  background: var(--brick);
}

.page-about .about-shead__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--brick);
  padding-top: 8px;
}

.page-about .about-shead__title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3.4vw, 38px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--paper);
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-about .about-shead__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl {
  padding-block: clamp(40px, 6vw, 80px) clamp(40px, 6vw, 76px);
}

.page-about .about-tl__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 clamp(18px, 3vw, 34px);
  border-left: 1px solid var(--line);
}

.page-about .about-tl__item {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 44px);
}

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

.page-about .about-tl__dot {
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 34px) - 5px);
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--line);
  border: 1px solid var(--line);
  transition: background 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.page-about .about-tl__item.is-visible .about-tl__dot {
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(124, 250, 74, 0.14);
}

.page-about .about-tl__year {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 8px;
  transition: color 0.5s var(--ease);
}

.page-about .about-tl__item.is-visible .about-tl__year {
  color: var(--ember);
}

.page-about .about-tl__h {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-tl__p {
  margin: 0;
  max-width: 36em;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 231, 213, 0.72);
}

.page-about .about-tl__tail {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--neon);
  font-size: 14px;
  color: rgba(242, 231, 213, 0.82);
}

.page-about .about-tl__tail a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 250, 74, 0.4);
}

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

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(40px, 6vw, 80px);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-team__bars {
  display: grid;
  gap: 22px;
}

.page-about .about-team__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .about-team__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__count {
  font-size: 19px;
  color: var(--neon);
}

.page-about .about-team__track {
  height: 8px;
  background: rgba(34, 48, 74, 0.72);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--aqua), var(--neon));
  transition: width 0.6s var(--ease);
}

.page-about .about-team__fill--a { width: 56.5%; }
.page-about .about-team__fill--b { width: 26.1%; background: linear-gradient(90deg, rgba(255, 106, 43, 0.7), var(--ember)); }
.page-about .about-team__fill--c { width: 17.4%; background: linear-gradient(90deg, rgba(53, 224, 208, 0.55), rgba(53, 224, 208, 0.95)); }

.page-about .about-team__duty {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__media {
  margin: 0;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.9);
}

.page-about .about-team__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-team__flow {
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(20px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .about-team__flowtitle {
  margin: 0 0 18px;
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: none;
}

.page-about .about-team__step {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 14px;
  background: rgba(16, 27, 46, 0.6);
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 231, 213, 0.8);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-team__step:hover {
  border-left-color: var(--neon);
  background: rgba(16, 27, 46, 0.92);
}

.page-about .about-team__snum {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--ember);
  letter-spacing: 0.1em;
}

/* ---------- 数据能力 ---------- */
.page-about .about-data {
  padding-block: clamp(40px, 6vw, 80px);
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-about .about-data__main {
  padding: clamp(22px, 3.4vw, 36px);
  background: linear-gradient(155deg, rgba(16, 27, 46, 0.96), rgba(11, 12, 16, 0.9));
  border: 1px solid var(--line);
  border-top: 2px solid var(--neon);
}

.page-about .about-data__big {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(48px, 9vw, 88px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-about .about-data__biglabel {
  margin: 10px 0 16px;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  color: var(--neon);
}

.page-about .about-data__bigtext {
  margin: 0 0 20px;
  max-width: 30em;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 231, 213, 0.78);
}

.page-about .about-data__link {
  display: inline-block;
  font-size: 14px;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 250, 74, 0.4);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-data__link:hover {
  transform: translateX(4px);
  border-bottom-color: var(--neon);
}

.page-about .about-data__side {
  margin: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-data__item {
  display: grid;
  grid-template-columns: minmax(4.4em, auto) 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
  background: rgba(16, 27, 46, 0.62);
  border: 1px solid var(--line);
  transition: border-color 0.3s var(--ease);
}

.page-about .about-data__item:hover {
  border-color: rgba(124, 250, 74, 0.5);
}

.page-about .about-data__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2vw, 21px);
  color: var(--ember);
  letter-spacing: -0.01em;
}

.page-about .about-data__v {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  padding-block: clamp(40px, 6vw, 80px);
}

.page-about .about-partners__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .about-partners__col {
  padding: clamp(20px, 3vw, 30px);
  background: rgba(16, 27, 46, 0.72);
  border: 1px solid var(--line);
}

.page-about .about-partners__col--alt {
  background: rgba(11, 12, 16, 0.86);
  border-top: 2px solid var(--ember);
}

.page-about .about-partners__h {
  margin: 0 0 12px;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-partners__p {
  margin: 0 0 18px;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 231, 213, 0.74);
}

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

.page-about .about-partners__tags li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--aqua);
}

/* ---------- 资质与联系 ---------- */
.page-about .about-trust {
  padding-block: clamp(40px, 6vw, 80px) 0;
}

.page-about .about-trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-about .about-trust__media {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
}

.page-about .about-trust__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.92);
}

.page-about .about-trust__list {
  margin: 0 0 22px;
  border-top: 1px solid var(--line);
}

.page-about .about-trust__row {
  display: grid;
  grid-template-columns: minmax(5em, 7em) 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-trust__row dt {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 2px;
}

.page-about .about-trust__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-trust__note {
  margin: 0 0 24px;
  padding: 14px 16px;
  background: var(--surface);
  border-left: 2px solid var(--aqua);
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(242, 231, 213, 0.76);
}

.page-about .about-trust__cta {
  display: inline-block;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-hero__media {
    margin-top: -32px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .page-about .about-data__grid {
    grid-template-columns: 0.92fr 1.08fr;
  }

  .page-about .about-partners__cols {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-trust__grid {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .page-about .about-team__steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1040px) {
  .page-about .about-hero__grid {
    grid-template-columns: 46px minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

  .page-about .about-hero__spine {
    display: block;
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-hero__media {
    margin-top: -48px;
  }

  .page-about .about-tl__list {
    padding-left: 48px;
  }

  .page-about .about-tl__dot {
    left: -53px;
  }

  .page-about .about-tl__p {
    max-width: 40em;
  }
}

@media (min-width: 1240px) {
  .page-about .about-data__big {
    font-size: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__dot,
  .page-about .about-tl__year,
  .page-about .about-team__fill,
  .page-about .about-data__link,
  .page-about .about-crumb a {
    transition: none;
  }

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