.page-about {
  --abt-line: rgba(216, 210, 196, 0.18);
  --abt-line-strong: rgba(216, 210, 196, 0.34);
  --abt-ink-soft: rgba(244, 241, 232, 0.78);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-about .abt-crumb {
  margin-bottom: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏框景 ---------- */
.page-about .abt-hero {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-about .abt-hero__frame {
  position: relative;
  border: 1px solid var(--abt-line);
  padding: clamp(20px, 3.6vw, 48px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(18, 166, 122, 0.16), transparent 62%),
    linear-gradient(165deg, rgba(14, 27, 38, 0.94), rgba(6, 16, 25, 0.58));
}

.page-about .abt-hero__frame::before {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  left: -1px;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--cyan) 0 1px, transparent 1px 8px);
  opacity: 0.42;
  pointer-events: none;
}

.page-about .abt-hero__frame::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: -1px;
  width: 56px;
  height: 3px;
  background: var(--orange);
}

.page-about .abt-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

.page-about .abt-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .abt-hero__accent {
  color: var(--orange);
}

.page-about .abt-hero__intro p {
  margin: 0 0 1.1em;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--abt-ink-soft);
  max-width: 48ch;
}

.page-about .abt-hero__intro .qm-lead {
  color: var(--paper);
}

.page-about .abt-status {
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border-top: 1px solid var(--abt-line);
}

.page-about .abt-status__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-top: 14px;
}

.page-about .abt-status__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-about .abt-status__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

/* ---------- 通用区块 ---------- */
.page-about .abt-block {
  padding-block: clamp(54px, 8vw, 104px);
}

.page-about .abt-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .abt-h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 3.6vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .abt-head__lead {
  margin: 16px 0 0;
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.8;
  color: var(--abt-ink-soft);
}

.page-about .abt-text {
  margin: 0 0 1em;
  font-size: clamp(16px, 1.2vw, 17px);
  line-height: 1.8;
  color: var(--abt-ink-soft);
}

.page-about .abt-text:last-child {
  margin-bottom: 0;
}

/* ---------- 演进长卷 ---------- */
.page-about .abt-evolve__media {
  margin: 0 0 clamp(30px, 5vw, 56px);
}

.page-about .abt-timeline {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
}

.page-about .abt-timeline__rail {
  display: flex;
  gap: clamp(18px, 3vw, 30px);
  overflow-x: auto;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--abt-line);
  scrollbar-width: thin;
}

.page-about .abt-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 200ms ease, border-color 200ms ease;
}

.page-about .abt-rail__link:hover,
.page-about .abt-rail__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--orange);
}

.page-about .abt-rail__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--green);
  background: transparent;
}

.page-about .abt-rail__link:hover .abt-rail__dot {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .abt-timeline__body {
  min-width: 0;
}

.page-about .abt-stage {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 48px) clamp(18px, 3vw, 32px);
  border-left: 1px solid var(--abt-line);
  scroll-margin-top: calc(var(--qm-header-h) + 28px);
}

.page-about .abt-stage::before {
  content: "";
  position: absolute;
  top: 4px;
  left: -1px;
  width: 2px;
  height: 44px;
  background: var(--orange);
}

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

.page-about .abt-stage__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green);
}

.page-about .abt-stage__title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-about .abt-stage__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .abt-stage__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .abt-stage__list li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 主题带：为什么两步 ---------- */
.page-about .abt-why {
  color: var(--paper);
}

.page-about .abt-why__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .abt-why__intro .abt-text {
  color: rgba(244, 241, 232, 0.86);
  max-width: 46ch;
}

.page-about .abt-why__steps {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .abt-step {
  border: 1px solid rgba(244, 241, 232, 0.26);
  background: rgba(6, 16, 25, 0.4);
  padding: clamp(18px, 2.6vw, 26px);
}

.page-about .abt-step__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .abt-step__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.35;
}

.page-about .abt-step__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .abt-why__stat {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(111, 242, 208, 0.4);
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.3vw, 15px);
  line-height: 1.8;
  color: var(--paper);
}

.page-about .abt-why__stat strong {
  color: var(--cyan);
  font-size: 1.4em;
  font-weight: 700;
}

/* ---------- 团队 ---------- */
.page-about .abt-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .abt-team__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-about .abt-team__media {
  margin: 0;
}

/* ---------- 合作生态 ---------- */
.page-about .abt-partners__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .abt-partners__grid p {
  max-width: 50ch;
}

.page-about .abt-reach {
  margin-top: clamp(32px, 5vw, 60px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--abt-line);
}

.page-about .abt-reach__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .abt-reach__scale {
  height: 46px;
  border-bottom: 1px solid var(--abt-line-strong);
  background-image: linear-gradient(90deg, var(--green) 0 2px, transparent 2px);
  background-size: calc(100% / 31) 100%;
  background-repeat: repeat-x;
  background-position: 0 100%;
  opacity: 0.85;
}

.page-about .abt-reach__note {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--abt-ink-soft);
  max-width: 56ch;
}

/* ---------- 荣誉：纸白反转 ---------- */
.page-about .abt-honor {
  background: var(--paper);
  color: var(--ink-deep);
  padding-block: clamp(54px, 8vw, 100px);
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
}

.page-about .abt-honor .qm-eyebrow {
  color: var(--deep);
}

.page-about .abt-honor .abt-head__lead {
  color: rgba(11, 17, 20, 0.72);
}

.page-about .abt-honor__grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .abt-honor__item {
  border: 1px solid var(--ink-deep);
  background: var(--paper);
  box-shadow: 4px 4px 0 var(--edge);
  padding: clamp(18px, 2.6vw, 26px);
}

.page-about .abt-honor__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-about .abt-honor__text {
  margin: 0;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.6;
  font-weight: 700;
  color: var(--ink-deep);
}

/* ---------- 规模与节奏 ---------- */
.page-about .abt-scale__grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--abt-line);
  border: 1px solid var(--abt-line);
}

.page-about .abt-scale__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink);
}

.page-about .abt-scale__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .abt-scale__unit {
  margin-left: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--green);
  letter-spacing: 0.04em;
}

.page-about .abt-scale__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .abt-scale__note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--abt-ink-soft);
  max-width: 62ch;
}

/* ---------- 结尾 ---------- */
.page-about .abt-cta {
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--abt-line);
  background:
    linear-gradient(120deg, rgba(18, 166, 122, 0.14), transparent 58%),
    var(--ink);
}

.page-about .abt-cta__inner {
  max-width: 70ch;
}

.page-about .abt-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(20px, 3vw, 28px) 0 clamp(18px, 2.4vw, 24px);
}

.page-about .abt-cta__link {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--abt-ink-soft);
}

.page-about .abt-cta__link a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .abt-cta__link a:hover,
.page-about .abt-cta__link a:focus-visible {
  color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-about .abt-status {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: clamp(14px, 3vw, 32px);
  }

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

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

@media (min-width: 768px) {
  .page-about .abt-why__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .abt-hero__grid {
    grid-template-columns: 38fr 62fr;
    align-items: start;
  }

  .page-about .abt-team__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

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

  .page-about .abt-why__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .abt-timeline {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .abt-timeline__rail {
    position: sticky;
    top: calc(var(--qm-header-h) + 32px);
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding: 0 0 0 14px;
    border-bottom: 0;
    border-left: 1px solid var(--abt-line);
  }

  .page-about .abt-rail__link {
    margin-left: -15px;
    padding: 8px 0 8px 15px;
  }

  .page-about .abt-honor__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .abt-rail__link {
    transition: none;
  }
}
<<<END>>>