.page-about {
  --about-gap: clamp(56px, 9vw, 128px);
  --about-title: clamp(2.4rem, 7.6vw, 5.8rem);
  --about-h2: clamp(1.8rem, 4.2vw, 3.2rem);
  --about-line: rgba(247, 243, 232, 0.16);
  display: block;
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-block: clamp(16px, 3vw, 28px) 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(24px, 4vw, 48px) var(--about-gap);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(36px, 6vw, 64px);
  align-items: end;
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-size: var(--about-title);
  line-height: 0.98;
  letter-spacing: 0.01em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--lime);
}

.page-about .about-hero__lede {
  margin: clamp(20px, 3vw, 32px) 0 0;
  max-width: 32em;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__main .btn-row {
  margin-top: clamp(24px, 4vw, 36px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__aside {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--lime);
  background: linear-gradient(180deg, rgba(11, 107, 58, 0.32), rgba(18, 51, 38, 0.6));
  border-radius: 2px;
}

.page-about .about-spine {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--grid);
  flex: 0 0 auto;
}

.page-about .about-stats {
  display: grid;
  gap: 18px;
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .about-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-stat__num {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-stat__label {
  font-size: 0.875rem;
  color: var(--paper);
  opacity: 0.8;
}

.page-about .about-hero__media {
  margin: clamp(32px, 5vw, 56px) 0 0;
}

.page-about .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-about .about-block {
  padding-block: var(--about-gap);
  border-top: 1px solid var(--about-line);
}

.page-about .about-block__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-block__num {
  display: block;
  font-size: 0.8125rem;
  letter-spacing: 0.3em;
  color: var(--lime);
  margin-bottom: 12px;
}

.page-about .about-block__title {
  margin: 0;
  font-size: var(--about-h2);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-block__body p {
  margin: 0 0 1.1em;
  max-width: 34em;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-block__body p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-facts {
  list-style: none;
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-facts li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  color: var(--paper);
  opacity: 0.86;
  line-height: 1.7;
}

.page-about .about-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 2px;
  background: var(--lime);
}

.page-about .about-facts .num {
  color: var(--lime);
  font-weight: 700;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__head {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .about-timeline__title {
  margin: 0;
  font-size: var(--about-h2);
  line-height: 1.15;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-timeline__note {
  margin: 10px 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.24em;
  color: var(--grid);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-left: 20px;
  border-left: 2px solid var(--about-line);
  position: relative;
  transition: border-color 160ms var(--ease);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--turf);
  border-radius: 50%;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .tl-item:hover,
.page-about .tl-item:focus-within {
  border-left-color: var(--lime);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .tl-year {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-about .tl-year .num {
  font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-about .tl-phase {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--grid);
  white-space: nowrap;
}

.page-about .tl-content {
  padding: clamp(16px, 2.4vw, 22px);
  background: var(--moss);
  border: 1px solid var(--about-line);
  border-radius: 2px;
  box-shadow: 4px 4px 0 rgba(216, 205, 180, 0.08), 8px 8px 0 rgba(216, 205, 180, 0.04);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .tl-item:hover .tl-content,
.page-about .tl-item:focus-within .tl-content {
  transform: translateY(-2px);
  border-color: rgba(198, 255, 61, 0.5);
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .tl-content p {
  margin: 0 0 14px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 34em;
}

.page-about .tl-content .tag {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  border: 1px dashed var(--line-strong);
  border-radius: 999px;
  color: var(--paper);
  opacity: 0.85;
}

/* ---------- 流程 ---------- */
.page-about .about-process__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.page-about .about-process__media figcaption {
  color: var(--grid);
}

.page-about .about-process__lede {
  margin: 16px 0 clamp(24px, 3vw, 32px);
  max-width: 32em;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .process-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .process-step__num {
  grid-row: span 2;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--lime);
  padding-top: 2px;
}

.page-about .process-step__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .process-step p {
  margin: 6px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-process__foot {
  margin: 20px 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--grid);
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 46em;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-team__lede {
  margin: 16px 0 0;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .team-card {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  background:
    linear-gradient(180deg, rgba(11, 107, 58, 0.4), rgba(10, 31, 20, 0.9)),
    repeating-linear-gradient(0deg, rgba(143, 168, 154, 0.14) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(90deg, rgba(143, 168, 154, 0.14) 0 1px, transparent 1px 22px);
  border: 1px solid var(--about-line);
  border-radius: 2px;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(198, 255, 61, 0.6);
}

.page-about .team-card__num {
  display: block;
  font-size: clamp(2.25rem, 5vw, 3rem);
  line-height: 1;
  font-weight: 700;
  color: var(--lime);
  margin-bottom: 12px;
}

.page-about .team-card__title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .team-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--grid);
  max-width: 44em;
}

/* ---------- 合作与资质 ---------- */
.page-about .about-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.page-about .about-partner__lede {
  margin: 16px 0 clamp(24px, 3vw, 32px);
  max-width: 32em;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .partner-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .partner-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .partner-item__num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--lime);
  line-height: 1.2;
}

.page-about .partner-item__title {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .partner-item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .cert-block {
  margin-top: clamp(24px, 4vw, 36px);
  padding: clamp(18px, 3vw, 24px);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--lime);
  background: rgba(18, 51, 38, 0.55);
  border-radius: 2px;
}

.page-about .cert-block__title {
  margin: 0 0 14px;
  font-size: 0.8125rem;
  letter-spacing: 0.24em;
  color: var(--grid);
  font-weight: 600;
}

.page-about .cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .cert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(216, 205, 180, 0.1);
  border: 1px solid rgba(216, 205, 180, 0.22);
  border-radius: 2px;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease);
  cursor: default;
}

.page-about .cert:hover,
.page-about .cert:focus-within {
  background: rgba(198, 255, 61, 0.14);
  border-color: var(--lime);
}

.page-about .cert__mark {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--lime);
  transform: rotate(45deg);
}

.page-about .cert__text {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .cert-block__note {
  margin: 14px 0 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--grid);
}

.page-about .about-partner__media {
  order: -1;
}

.page-about .about-partner__media figcaption {
  color: var(--grid);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor__head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

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

.page-about .honor {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .honor__year {
  font-size: 0.8125rem;
  letter-spacing: 0.24em;
  color: var(--lime);
}

.page-about .honor__title {
  margin: 0;
  font-size: clamp(1.125rem, 2.2vw, 1.375rem);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .honor p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 36em;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-block: var(--about-gap);
  border-top: 1px solid var(--about-line);
  background:
    radial-gradient(ellipse at 20% 0%, rgba(11, 107, 58, 0.55), transparent 65%),
    var(--ink);
}

.page-about .about-cta__inner {
  max-width: 46em;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(1.625rem, 4vw, 2.75rem);
  line-height: 1.2;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 16px 0 clamp(24px, 3vw, 32px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-cta .btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 固定索引入口 ---------- */
.page-about .about-fab {
  display: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-about .about-block__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .honor {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: start;
    gap: 4px 24px;
  }

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

  .page-about .tl-item {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: start;
    gap: 24px;
    padding-left: 28px;
  }

  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .tl-item:nth-child(even) {
    margin-left: clamp(0px, 7vw, 120px);
  }

  .page-about .tl-item:nth-child(odd) {
    margin-right: clamp(0px, 7vw, 120px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-process__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-partner__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-partner__media {
    order: 0;
    position: sticky;
    top: 96px;
  }

  .page-about .about-fab {
    display: block;
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    text-decoration: none;
    background: var(--lime);
    color: var(--ink);
    padding: 16px 8px;
    border-radius: 2px 0 0 2px;
    box-shadow: -4px 0 0 rgba(10, 31, 20, 0.35);
    transition: background-color 160ms var(--ease), transform 160ms var(--ease);
  }

  .page-about .about-fab__text {
    writing-mode: vertical-rl;
    letter-spacing: 0.28em;
    font-size: 0.75rem;
    font-weight: 700;
  }

  .page-about .about-fab:hover,
  .page-about .about-fab:focus-visible {
    background: var(--paper);
    transform: translateY(-50%) translateX(-3px);
  }
}

@media (min-width: 1200px) {
  .page-about .about-stats {
    gap: 22px;
  }

  .page-about .honor {
    grid-template-columns: 180px minmax(0, 1fr);
  }
}
<<<PAGE_CSS_END>>>