.page-about {
  --ab-gap: clamp(16px, 2.2vw, 30px);
  --ab-r: 26px;
  --ab-r-sm: 14px;
  --ab-soft: #C9D6D1;
  --ab-dim: #A9BAB4;
}

/* ============ 开场 ============ */
.page-about .about-hero {
  position: relative;
  padding: clamp(30px, 4.6vw, 72px) 0 clamp(38px, 5vw, 84px);
  overflow: hidden;
  background:
    radial-gradient(115% 85% at 3% -12%, rgba(15, 61, 47, .9), transparent 62%),
    radial-gradient(72% 62% at 100% 0%, rgba(28, 107, 81, .26), transparent 66%),
    var(--ink);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(30px, 4.4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-hero__text {
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(34px, 7.6vw, 76px);
  line-height: 1.02;
  letter-spacing: -.022em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-hero__title span {
  display: block;
}

.page-about .about-hero__title .is-flame {
  color: var(--flame);
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ab-soft);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 28px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.page-about .about-hero__facts .num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-about .about-hero__facts em {
  font-style: normal;
  font-size: 13px;
  color: var(--gray);
}

/* 版本时间线 */
.page-about .about-hero__rail {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 3vw, 34px) clamp(20px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--ab-r);
  background: linear-gradient(158deg, rgba(14, 22, 20, .92), rgba(7, 11, 10, .62));
}

.page-about .about-hero__vert {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: rgba(46, 242, 200, .45);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.page-about .about-hero__railhead {
  margin: 0 0 22px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--gray);
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, rgba(46, 242, 200, .85), rgba(42, 54, 52, .3));
}

.page-about .about-tl__item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .about-tl__dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-about .about-tl__ver {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .about-tl__ver em {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--flame);
  border: 1px solid rgba(255, 90, 31, .5);
}

.page-about .about-tl__txt {
  margin: 7px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ab-dim);
}

.page-about .about-tl__item--now .about-tl__dot {
  background: var(--flame);
  border-color: var(--flame);
  box-shadow: 0 0 0 5px rgba(255, 90, 31, .18);
}

.page-about .about-tl__item--now .about-tl__ver {
  color: var(--flame);
}

/* ============ 定位 ============ */
.page-about .about-mission {
  position: relative;
  padding: clamp(64px, 9vw, 128px) 0 clamp(54px, 7vw, 104px);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-mission__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-mission__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
}

.page-about .about-mission::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(104deg, rgba(7, 11, 10, .95) 24%, rgba(7, 11, 10, .48) 100%);
}

.page-about .about-mission__body {
  position: relative;
  z-index: 2;
}

.page-about .about-mission__tag {
  margin: 0 0 14px;
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink);
  background: var(--cyan);
}

.page-about .about-mission__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ab-soft);
}

.page-about .about-mission__list {
  display: grid;
  gap: 18px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-mission__list li {
  padding: 20px 22px;
  border-radius: var(--ab-r-sm);
  border-left: 2px solid rgba(46, 242, 200, .55);
  background: rgba(15, 61, 47, .42);
}

.page-about .about-mission__k {
  display: block;
  margin-bottom: 8px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .01em;
}

.page-about .about-mission__list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ab-dim);
}

/* ============ 团队 ============ */
.page-about .about-team {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-team__head {
  max-width: 66ch;
}

.page-about .about-team__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-roles {
  display: grid;
  gap: 14px;
  margin: 34px 0 0;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-role {
  position: relative;
  padding: 22px 22px 20px;
  border-radius: var(--ab-r);
  overflow: hidden;
  background: var(--ink-2);
  color: var(--paper);
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  width: 130px;
  height: 130px;
  right: -46px;
  bottom: -56px;
  border-radius: 46% 54% 62% 38% / 52% 46% 54% 48%;
  background: rgba(28, 107, 81, .55);
}

.page-about .about-role--w2::before {
  border-radius: 60% 40% 44% 56% / 42% 58% 42% 58%;
  background: rgba(255, 90, 31, .4);
}

.page-about .about-role__n {
  position: relative;
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-about .about-role--w2 .about-role__n {
  color: var(--flame);
}

.page-about .about-role__t {
  position: relative;
  margin: 12px 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-about .about-role__d {
  position: relative;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ab-dim);
}

.page-about .about-team__figure {
  margin: 34px 0 0;
}

/* ============ 覆盖 ============ */
.page-about .about-coverage {
  padding: clamp(48px, 7vw, 96px) 0;
  background: var(--ink);
}

.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(30px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-about .about-coverage__head p {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ab-soft);
}

.page-about .about-coverage__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 34px;
  margin: 28px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-coverage__stats li {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.page-about .about-coverage__stats .num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-coverage__stats em {
  font-style: normal;
  font-size: 13px;
  color: var(--gray);
}

.page-about .about-coverage__viz {
  min-width: 0;
}

.page-about .about-dots__cap {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-about .about-dots {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(4px, 1.2vw, 9px);
  padding: 18px;
  border-radius: var(--ab-r);
  border: 1px solid var(--line);
  background: rgba(15, 61, 47, .3);
}

.page-about .about-dots i {
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 4px;
  background: rgba(28, 107, 81, .92);
}

.page-about .about-dots i:nth-child(7n+3) {
  background: rgba(46, 242, 200, .6);
}

.page-about .about-dots i:nth-child(12n) {
  background: var(--flame);
  opacity: .85;
}

.page-about .about-coverage__figure {
  margin: 22px 0 0;
}

/* ============ 更新节奏 ============ */
.page-about .about-rhythm {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-rhythm__list {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(242, 246, 244, .16);
}

.page-about .about-rhythm__item {
  display: grid;
  gap: 6px 22px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(242, 246, 244, .16);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-rhythm__k {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-rhythm__v {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-rhythm__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ab-dim);
}

/* ============ 服务 ============ */
.page-about .about-service {
  padding: clamp(48px, 7vw, 96px) 0;
  background: var(--ink-2);
}

.page-about .about-service__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-about .about-service__intro p {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ab-soft);
}

.page-about .about-service__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.page-about .about-service__meta {
  margin: 0;
  display: grid;
  gap: 1px;
  border-radius: var(--ab-r-sm);
  overflow: hidden;
  background: var(--line);
}

.page-about .about-service__meta > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: space-between;
  align-items: baseline;
  padding: 16px 18px;
  background: var(--ink);
}

.page-about .about-service__meta dt {
  font-size: 13.5px;
  color: var(--gray);
}

.page-about .about-service__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--cyan);
  letter-spacing: .02em;
}

/* ============ 行业参与 ============ */
.page-about .about-network {
  padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 8vw, 108px);
  background: var(--ink);
}

.page-about .about-network__grid {
  display: grid;
  gap: 16px;
  margin: 32px 0 0;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-network__card {
  position: relative;
  padding: 26px 24px 24px;
  border-radius: var(--ab-r);
  border: 1px solid var(--line);
  background: linear-gradient(168deg, rgba(15, 61, 47, .62), rgba(7, 11, 10, .9));
}

.page-about .about-network__card--c {
  border-color: rgba(255, 90, 31, .45);
}

.page-about .about-network__n {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-about .about-network__card--c .about-network__n {
  color: var(--flame);
}

.page-about .about-network__card h3 {
  margin: 14px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-network__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ab-dim);
}

.page-about .about-cta {
  display: grid;
  gap: 20px;
  margin: 40px 0 0;
  padding: clamp(26px, 3.4vw, 40px);
  border-radius: var(--ab-r);
  border: 1px solid rgba(46, 242, 200, .28);
  background: rgba(15, 61, 47, .38);
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

.page-about .about-cta__txt {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ab-soft);
}

.page-about .about-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 700px) {
  .page-about .about-mission__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-roles {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-role--w3 {
    grid-column: span 3;
  }

  .page-about .about-role--w2 {
    grid-column: span 2;
  }

  .page-about .about-role--w4 {
    grid-column: span 4;
  }

  .page-about .about-dots {
    grid-template-columns: repeat(16, minmax(0, 1fr));
  }

  .page-about .about-rhythm__item {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .about-rhythm__v {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .page-about .about-rhythm__item p {
    grid-column: 2;
    grid-row: 2;
  }

  .page-about .about-network__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-about .about-network__card--b {
    transform: translateY(14px);
  }

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-about .about-hero__rail {
    padding-right: 62px;
  }

  .page-about .about-hero__vert {
    display: block;
    position: absolute;
    top: 22px;
    right: 16px;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-about .about-service__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-about .about-team__figure {
    margin-top: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-network__card--b {
    transform: none;
  }
}
<<<END>>>