.page-about {
  --about-grid: rgba(143, 163, 184, 0.08);
  --about-rule: rgba(143, 163, 184, 0.2);
  color: var(--body-text);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(26px, 4.4vw, 52px) clamp(46px, 7.4vw, 92px);
  background:
    radial-gradient(120% 92% at 92% 6%, rgba(255, 90, 31, 0.16), transparent 58%),
    linear-gradient(170deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--about-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: min(58vw, 620px);
  height: min(58vw, 620px);
  border: 1px solid rgba(216, 168, 78, 0.16);
  transform: rotate(18deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  max-width: 17ch;
  margin: 18px 0 0;
  color: var(--bone);
  letter-spacing: -0.02em;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin: 22px 0 0;
  color: var(--body-text);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  margin-top: clamp(30px, 4.8vw, 48px);
  border-top: 1px solid var(--line-2);
}

.page-about .about-hero__fact {
  flex: 1 1 132px;
  padding: 16px 18px 4px 0;
  border-right: 1px solid var(--line);
}

.page-about .about-hero__fact:last-child {
  border-right: 0;
}

.page-about .about-hero__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--teal);
}

.page-about .about-hero__fact:nth-child(1) .about-hero__fact-num {
  color: var(--gold);
}

.page-about .about-hero__fact:nth-child(2) .about-hero__fact-num {
  color: var(--orange);
}

.page-about .about-hero__fact-label {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-block {
  position: relative;
  padding-block: var(--section-y);
  border-bottom: 1px solid var(--line);
}

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

.page-about .about-section__lede {
  max-width: 64ch;
  margin: 16px 0 0;
  color: var(--body-text);
}

/* ---------- 01 起点 ---------- */

.page-about .about-origin__layout {
  display: grid;
  gap: clamp(28px, 4.4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-origin__text .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .about-origin__text .prose {
  margin-top: 18px;
  max-width: 58ch;
}

.page-about .about-origin__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-origin__list li {
  position: relative;
  padding: 13px 0 13px 26px;
  border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--body-text);
}

.page-about .about-origin__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 11px;
  height: 1px;
  background: var(--teal);
}

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

.page-about .about-origin__figure .media {
  width: 100%;
}

.page-about .about-origin__cap {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 02 时间轴 ---------- */

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

.page-about .about-timeline__head .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .timeline__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-about .timeline__jump a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .timeline__jump a:hover,
.page-about .timeline__jump a:focus-visible {
  color: var(--ink);
  background: var(--teal);
  border-color: var(--teal);
}

.page-about .timeline {
  list-style: none;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 11px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(216, 168, 78, 0.14) 100%);
}

.page-about .timeline__item {
  position: relative;
  padding-left: 46px;
  padding-bottom: clamp(30px, 4.6vw, 48px);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 19px;
  height: 19px;
  border: 3px solid var(--ink);
  background: var(--gold);
  box-shadow: 0 0 0 1px rgba(216, 168, 78, 0.55);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6.4vw, 3.5rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: rgba(216, 168, 78, 0.9);
}

.page-about .timeline__body {
  margin-top: 12px;
}

.page-about .timeline__title {
  margin: 0;
  font-size: var(--fs-h3);
  color: var(--bone);
  letter-spacing: 0.01em;
}

.page-about .timeline__text {
  max-width: 58ch;
  margin: 10px 0 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--body-text);
}

.page-about .timeline__meta {
  display: inline-block;
  margin-top: 12px;
  padding-left: 9px;
  border-left: 2px solid var(--teal);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  color: var(--teal);
}

.page-about .about-timeline__figure {
  margin: clamp(34px, 5.4vw, 56px) 0 0;
}

.page-about .about-timeline__figure .media {
  width: 100%;
}

.page-about .about-timeline__cap {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 03 团队 ---------- */

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

.page-about .about-team__intro .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .about-team__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin-top: clamp(26px, 4.2vw, 44px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .team-cell {
  position: relative;
  flex: 1 1 218px;
  padding: 26px 20px 26px;
  background: linear-gradient(180deg, rgba(16, 21, 28, 0.94), rgba(7, 17, 31, 0.72));
  transition: background-color var(--dur) var(--ease);
}

.page-about .team-cell::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent, var(--teal));
}

.page-about .team-cell:hover {
  background: linear-gradient(180deg, rgba(22, 30, 40, 0.98), rgba(10, 22, 34, 0.82));
}

.page-about .accent-orange {
  --accent: var(--orange);
}

.page-about .accent-teal {
  --accent: var(--teal);
}

.page-about .accent-gold {
  --accent: var(--gold);
}

.page-about .accent-moss {
  --accent: var(--moss);
}

.page-about .accent-clay {
  --accent: var(--clay);
}

.page-about .team-cell__count {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent, var(--teal));
}

.page-about .team-cell__name {
  margin: 12px 0 0;
  font-size: 1rem;
  color: var(--bone);
}

.page-about .team-cell__desc {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.66;
  color: var(--body-text);
}

/* ---------- 04 归档规模 ---------- */

.page-about .about-archive {
  background: linear-gradient(180deg, var(--ink-soft) 0%, var(--ink) 100%);
}

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

.page-about .about-archive__head .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .archive-figures {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px 32px;
  margin-top: clamp(28px, 4.4vw, 46px);
}

.page-about .archive-figure {
  padding-top: 18px;
  border-top: 1px solid var(--line-2);
}

.page-about .archive-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5.2vw, 2.9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent, var(--teal));
}

.page-about .archive-figure__label {
  display: block;
  margin-top: 10px;
  font-size: 0.94rem;
  color: var(--bone);
}

.page-about .archive-figure__note {
  display: block;
  margin-top: 8px;
  font-size: 0.83rem;
  line-height: 1.66;
  color: var(--mist);
}

.page-about .archive-figure__strip {
  display: block;
  height: 8px;
  margin-top: 16px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--accent, var(--teal)) 0 7px,
    transparent 7px 13px
  );
  opacity: 0.7;
}

.page-about .archive-scale {
  margin-top: clamp(34px, 5.4vw, 56px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .archive-scale__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .archive-scale__svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 760px;
}

/* ---------- 05 协作生态 ---------- */

.page-about .about-eco__layout {
  display: grid;
  gap: clamp(28px, 4.4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-eco__text .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .about-eco__text .prose {
  margin-top: 18px;
  max-width: 58ch;
}

.page-about .about-eco__ways {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .eco-way {
  padding: 18px 18px 20px;
  background: rgba(7, 17, 31, 0.72);
}

.page-about .eco-way__title {
  margin: 0;
  font-size: 0.98rem;
  color: var(--bone);
}

.page-about .eco-way__desc {
  margin: 8px 0 0;
  font-size: 0.88rem;
  line-height: 1.66;
  color: var(--body-text);
}

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

.page-about .about-eco__figure .media {
  width: 100%;
}

.page-about .about-eco__cap {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 06 荣誉与安全 ---------- */

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

.page-about .about-honor__head .h2 {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-about .about-honor__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(26px, 4.2vw, 44px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .honor-card {
  position: relative;
  padding: 26px 20px 26px 22px;
  background: rgba(16, 21, 28, 0.9);
}

.page-about .honor-card__mark {
  display: inline-block;
  font-size: 1rem;
  line-height: 1;
  color: var(--gold);
}

.page-about .honor-card__title {
  margin: 12px 0 0;
  font-size: 1rem;
  color: var(--bone);
}

.page-about .honor-card__text {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--body-text);
}

.page-about .about-honor__cta {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 4.6vw, 48px);
  padding: clamp(22px, 3.4vw, 34px);
  background:
    linear-gradient(120deg, rgba(255, 90, 31, 0.12), transparent 62%),
    var(--char);
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--orange);
}

.page-about .about-honor__cta-title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--bone);
}

.page-about .about-honor__cta-desc {
  max-width: 58ch;
  margin: 10px 0 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--body-text);
}

.page-about .about-honor__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero__fact {
    flex: 1 1 0;
    padding-right: 22px;
  }

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

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

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

@media (min-width: 900px) {
  .page-about .about-origin__layout {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-about .about-eco__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-honor__cta {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

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

  .page-about .timeline__item {
    padding-left: 58px;
  }

  .page-about .timeline::before {
    left: 13px;
  }

  .page-about .timeline__item::before {
    left: 4px;
  }
}

@media (min-width: 1080px) {
  .page-about .archive-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-hero__title {
    max-width: 15ch;
  }
}
<<<END>>