.page-about {
  --about-line: rgba(159, 183, 173, 0.22);
  --about-line-strong: rgba(159, 183, 173, 0.42);
  --about-card: linear-gradient(168deg, rgba(11, 15, 18, 0.94), rgba(14, 43, 37, 0.62));
  --about-glow: rgba(200, 255, 61, 0.14);
  background: var(--navy);
  color: var(--mist);
  font-family: var(--font-sans);
  overflow-wrap: break-word;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 2rem) 0 clamp(2.5rem, 7vw, 5rem);
  background:
    repeating-linear-gradient(90deg, rgba(159, 183, 173, 0.05) 0 1px, transparent 1px 104px),
    radial-gradient(130% 90% at 88% -10%, rgba(200, 255, 61, 0.16), transparent 58%),
    linear-gradient(168deg, var(--forest) 0%, var(--navy) 68%);
  overflow: hidden;
}

.page-about .about-hero__crumb {
  margin-bottom: 1.5rem;
}

.page-about .about-hero .about-hero__crumb a,
.page-about .about-hero .about-hero__crumb li {
  color: var(--mist);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(1.25rem, 3.2vw, 2.75rem);
  border: 1px solid var(--about-line-strong);
  background: linear-gradient(180deg, rgba(7, 26, 43, 0.4), rgba(7, 26, 43, 0.78));
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 30px);
  opacity: 0.45;
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 46%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange));
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-hero h1 {
  margin: 0.7rem 0 1.1rem;
  font-size: clamp(1.85rem, 5.4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--cream);
  max-width: 16em;
}

.page-about .about-hero__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* 首屏速览面板 */
.page-about .about-hero__board {
  padding: 1.25rem 1.25rem 1.1rem;
  background: linear-gradient(155deg, rgba(14, 43, 37, 0.96), rgba(11, 15, 18, 0.96));
  border: 1px solid rgba(200, 255, 61, 0.24);
  box-shadow: inset 0 0 0 1px rgba(7, 26, 43, 0.6);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .board__title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .board__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
  margin: 0;
}

.page-about .board__item dt {
  font-size: var(--fs-12);
  color: var(--sage);
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.page-about .board__item dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}

.page-about .board__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: clamp(1.7rem, 4.4vw, 2.4rem);
  line-height: 1;
  color: var(--lime);
  text-shadow: 0 0 22px var(--about-glow);
}

.page-about .board__unit {
  font-size: var(--fs-12);
  color: var(--mist);
}

.page-about .board__note {
  margin: 1.15rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px dashed rgba(159, 183, 173, 0.25);
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--sage);
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(3rem, 8vw, 6rem);
  background:
    radial-gradient(80% 50% at 100% 0%, rgba(14, 43, 37, 0.55), transparent 60%),
    var(--navy);
}

.page-about .about-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}

/* 章节索引 */
.page-about .about-index {
  min-width: 0;
}

.page-about .about-index__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.4rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  white-space: nowrap;
  font-size: var(--fs-14);
  color: var(--cream);
  text-decoration: none;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--lime);
  border-color: rgba(200, 255, 61, 0.55);
  background: rgba(200, 255, 61, 0.06);
}

.page-about .about-index__no {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  color: var(--orange);
}

/* 档案卡列 */
.page-about .about-articles {
  min-width: 0;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-article {
  position: relative;
  padding: clamp(1rem, 2.6vw, 1.75rem) 0 clamp(1rem, 2.6vw, 1.75rem) clamp(0.9rem, 2.4vw, 1.6rem);
  border-left: 1px solid var(--about-line);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  transition: border-color 0.25s ease;
}

.page-about .about-article:target {
  border-left-color: var(--lime);
}

.page-about .about-article__head {
  margin-bottom: 0.9rem;
}

.page-about .about-article h2 {
  margin: 0.4rem 0 0;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--cream);
}

.page-about .about-article__body p {
  margin: 0 0 0.95rem;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-article__more {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 1.25rem !important;
}

.page-about .about-article__more a {
  font-size: var(--fs-14);
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, 0.4);
  padding-bottom: 2px;
}

.page-about .about-article__more a:hover,
.page-about .about-article__more a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* 图片 */
.page-about .about-figure {
  margin: 1.5rem 0 0;
  overflow: hidden;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  background: var(--stand);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 0.7rem 0.9rem 0.85rem;
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--sage);
  border-top: 1px solid rgba(159, 183, 173, 0.16);
}

/* ---------- 团队 ---------- */
.page-about .team__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .team__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.page-about .team__item {
  position: relative;
  padding: 1.1rem 1.1rem 1.15rem 1.35rem;
  background: var(--about-card);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .team__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1rem;
  width: 3px;
  height: 26px;
  background: linear-gradient(180deg, var(--lime), var(--orange));
}

.page-about .team__num {
  margin: 0 0 0.2rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--lime);
}

.page-about .team__item h3 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-18);
  color: var(--cream);
  letter-spacing: 0.01em;
}

.page-about .team__item p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 版本刻度（奶油纸） ---------- */
.page-about .about-article--paper {
  padding: clamp(1.25rem, 3.4vw, 2.5rem);
  color: var(--brown);
  background: var(--cream);
  border-left: 0;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  background-image:
    repeating-linear-gradient(0deg, rgba(43, 29, 22, 0.06) 0 1px, transparent 1px 34px);
  background-blend-mode: multiply;
}

.page-about .about-article--paper h2 {
  color: var(--brown);
}

.page-about .about-article--paper .coord {
  color: #8a6b3f;
}

.page-about .about-article--paper .about-article__body p {
  color: #4a382d;
}

.page-about .timeline {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.5rem;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(111, 131, 120, 0.35));
}

.page-about .timeline__item {
  position: relative;
  padding-left: 2.4rem;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--cream);
  border: 3px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .timeline__year {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: var(--fs-20);
  letter-spacing: 0.02em;
  color: #8a6b3f;
}

.page-about .timeline__item h3 {
  margin: 0 0 0.35rem;
  font-size: var(--fs-16);
  color: var(--brown);
  font-weight: 800;
}

.page-about .timeline__item p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: #4a382d;
}

.page-about .about-article--paper .about-figure {
  border-color: rgba(43, 29, 22, 0.2);
  background: #e3d7bb;
}

.page-about .about-article--paper .about-figure figcaption {
  color: #6b5544;
  border-top-color: rgba(43, 29, 22, 0.16);
}

.page-about .about-figure--wide {
  margin-top: 2rem;
}

/* ---------- 流程 ---------- */
.page-about .steps {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.page-about .step {
  position: relative;
  padding: 1.15rem 1.15rem 1.25rem;
  background: var(--about-card);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .step::after {
  content: "";
  position: absolute;
  right: 0.9rem;
  bottom: 0.9rem;
  width: 26px;
  height: 1px;
  background: var(--orange);
  transform: rotate(-45deg);
  opacity: 0.85;
}

.page-about .step__num {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .step h3 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-18);
  color: var(--cream);
}

.page-about .step p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
  max-width: 40ch;
}

/* ---------- 合作生态 ---------- */
.page-about .partners__grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .partners__text p {
  margin: 0 0 1rem;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mist);
  max-width: 58ch;
}

.page-about .partners__stats {
  display: grid;
  gap: 0.6rem;
  margin: 1.25rem 0;
  padding: 0;
}

.page-about .partners__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.85rem;
  border-left: 2px solid rgba(255, 106, 43, 0.7);
  background: rgba(11, 15, 18, 0.6);
}

.page-about .partners__stat dt {
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-about .partners__stat dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.page-about .partners__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: var(--fs-24);
  line-height: 1;
  color: var(--orange);
}

.page-about .partners__unit {
  font-size: var(--fs-12);
  color: var(--sage);
}

.page-about .partners__figure {
  margin-top: 0;
}

/* ---------- 服务与联系 ---------- */
.page-about .about-cta {
  margin-top: 1.25rem;
  padding: clamp(1.25rem, 3.4vw, 2.25rem);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(200, 255, 61, 0.12), transparent 60%),
    linear-gradient(150deg, var(--forest), var(--navy) 72%);
  border: 1px solid rgba(200, 255, 61, 0.26);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-about .about-cta__paths {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.25rem;
}

.page-about .about-cta__paths h3 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-18);
  color: var(--cream);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-about .about-cta__paths h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--lime);
  transform: rotate(45deg);
  flex: none;
}

.page-about .about-cta__paths li:nth-child(2) h3::before {
  background: var(--orange);
}

.page-about .about-cta__paths p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed rgba(159, 183, 173, 0.25);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

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

@media (min-width: 860px) {
  .page-about .team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 1.75rem;
  }

  .page-about .team__grid .about-figure {
    margin-top: 0;
  }

  .page-about .partners__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 2rem;
  }

  .page-about .timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
    padding-top: 2.5rem;
  }

  .page-about .timeline::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--gold), rgba(111, 131, 120, 0.5));
  }

  .page-about .timeline__item {
    padding-left: 0;
  }

  .page-about .timeline__item::before {
    left: 0;
    top: -2.4rem;
  }
}

@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-hero__board {
    padding: 1.5rem 1.5rem 1.25rem;
  }
}

@media (min-width: 1080px) {
  .page-about .about-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    padding-right: 1rem;
    border-right: 1px solid var(--about-line);
  }

  .page-about .about-index__list {
    display: grid;
    gap: 0.15rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__list a {
    display: flex;
    width: 100%;
    padding: 0.55rem 0.6rem;
    border: 0;
    border-left: 2px solid transparent;
    clip-path: none;
    white-space: normal;
    font-size: var(--fs-14);
    color: var(--mist);
  }

  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible {
    border-left-color: var(--lime);
    background: rgba(200, 255, 61, 0.06);
    color: var(--cream);
    border-color: transparent;
    border-left-color: var(--lime);
  }

  .page-about .about-article {
    margin-right: clamp(0rem, 2vw, 2.5rem);
  }

  .page-about .about-article:nth-of-type(even) {
    margin-left: clamp(0rem, 3vw, 3.5rem);
    margin-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__list a,
  .page-about .about-article {
    transition: none;
  }
}


以上为完整输出。