.page-about {
  --about-rail-w: 236px;
  --about-sticky: 104px;
  --about-hair: rgba(28, 58, 46, 0.85);
  --about-glow: rgba(198, 245, 66, 0.07);
  color: var(--bone);
  background:
    radial-gradient(1100px 480px at 84% -8%, var(--about-glow), transparent 62%),
    var(--ink);
  padding-block: clamp(18px, 3vw, 30px) clamp(56px, 9vw, 118px);
  overflow-x: clip;
}

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

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-bottom: clamp(20px, 3vw, 34px);
}

.page-about .breadcrumbs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 13px;
  color: var(--rock);
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--moss);
}

.page-about .breadcrumbs__item a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.page-about .breadcrumbs__item[aria-current="page"] {
  color: var(--bone);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(34px, 6vw, 66px);
}

.page-about .about-hero__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 22px;
  margin-bottom: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__stamp {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--rock);
  border: 1px solid var(--moss);
  padding: 6px 13px;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  white-space: nowrap;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 8.8vw, 106px);
  line-height: 0.93;
  letter-spacing: -0.032em;
  max-width: 14ch;
  text-wrap: balance;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 54px);
  margin-top: clamp(28px, 4.5vw, 52px);
}

.page-about .about-hero__lead .lead {
  margin: 0;
  max-width: 40em;
  font-size: clamp(16px, 1.15vw + 13px, 18px);
  line-height: 1.8;
  color: var(--bone);
}

/* 陶土引文线 */
.page-about .pull-note {
  border-left: 3px solid var(--clay);
  padding: 2px 0 2px clamp(16px, 2.6vw, 24px);
  margin: clamp(26px, 4vw, 40px) 0 0;
  max-width: 38em;
}

.page-about .pull-note p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--bone);
}

.page-about .pull-note__source {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock);
}

/* 比分牌式数据块 */
.page-about .about-stats {
  background: var(--pitch);
  padding: clamp(20px, 3vw, 30px) clamp(18px, 2.6vw, 28px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-stats__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw + 14px, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--fluoro);
  letter-spacing: -0.01em;
}

.page-about .about-stats__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--rock);
  letter-spacing: 0.02em;
}

/* ---------- 主栅格：左栏 + 宽正文 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 62px);
  align-items: start;
}

.page-about .about-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-rail__label {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--moss);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}

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

.page-about .toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 6px 10px 6px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--rock);
  text-decoration: none;
  position: relative;
  transition: color 0.18s ease;
}

.page-about .about-toc__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--moss);
  letter-spacing: 0.06em;
  transition: color 0.18s ease;
}

.page-about .toc-link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  background: var(--fluoro);
  transition: width 0.22s ease;
}

.page-about .toc-link:hover,
.page-about .toc-link:focus-visible {
  color: var(--bone);
}

.page-about .toc-link:hover .about-toc__idx,
.page-about .toc-link:focus-visible .about-toc__idx {
  color: var(--fluoro);
}

.page-about .toc-link.is-active {
  color: var(--fluoro);
}

.page-about .toc-link.is-active .about-toc__idx {
  color: var(--volt);
}

.page-about .toc-link.is-active::before {
  width: calc(100% - 6px);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-body {
  min-width: 0;
}

.page-about .about-section {
  padding-block: clamp(34px, 6vw, 68px);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-body .prose {
  max-width: 40em;
}

.page-about .about-body .prose p {
  margin: 0 0 1.15em;
  line-height: 1.82;
}

.page-about .about-body .prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-sub {
  margin: clamp(34px, 5vw, 54px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 1.4vw + 13px, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .about-inline-link {
  margin: clamp(24px, 3vw, 34px) 0 0;
}

/* ---------- 从 2022 年说起 ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 42px);
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-about .about-figure {
  margin: 0;
  width: 100%;
}

.page-about .about-figure--square {
  max-width: 420px;
}

/* 时间轴 */
.page-about .chronicle {
  margin-top: clamp(20px, 3vw, 30px);
  padding-left: 30px;
  position: relative;
}

.page-about .chronicle__item {
  position: relative;
  padding-bottom: clamp(6px, 1.2vw, 12px);
}

.page-about .chronicle__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 9px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--volt);
  background: var(--ink);
  box-sizing: border-box;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .chronicle__item::after {
  content: "";
  position: absolute;
  left: -25px;
  top: 22px;
  bottom: -4px;
  width: 1px;
  background: var(--moss);
}

.page-about .chronicle__item:last-child::after {
  display: none;
}

.page-about .chronicle__item[open]::before {
  border-color: var(--fluoro);
  background: var(--fluoro);
}

.page-about .chronicle__head {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 4px 0 12px;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease;
}

.page-about .chronicle__head::-webkit-details-marker {
  display: none;
}

.page-about .chronicle__head:hover .chronicle__year,
.page-about .chronicle__head:focus-visible .chronicle__year {
  color: var(--fluoro);
}

.page-about .chronicle__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--bone);
  transition: color 0.18s ease;
}

.page-about .chronicle__label {
  font-size: 13.5px;
  color: var(--rock);
}

.page-about .chronicle__panel {
  padding: 0 0 20px;
  max-width: 38em;
}

.page-about .chronicle__panel p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--bone);
}

/* ---------- 数据流程 ---------- */
.page-about .about-banner {
  margin: 0 0 clamp(26px, 4vw, 42px);
  width: 100%;
}

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

.page-about .pipeline__step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: clamp(12px, 2.6vw, 28px);
  padding: clamp(18px, 3vw, 26px) 0;
  border-bottom: 1px solid var(--moss);
}

.page-about .pipeline__idx {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--volt);
  padding-top: 3px;
}

.page-about .pipeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.1vw + 13px, 20px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .pipeline__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--rock);
  max-width: 40em;
}

.page-about .pipeline__body p strong {
  color: var(--bone);
  font-weight: 600;
}

/* ---------- 编辑部构成 ---------- */
.page-about .staff-grid {
  list-style: none;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 12px;
}

.page-about .staff-card {
  background: var(--pitch);
  padding: 20px 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: background 0.2s ease;
}

.page-about .staff-card:hover {
  background: var(--moss);
}

.page-about .staff-card__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--fluoro);
}

.page-about .staff-card__role {
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--bone);
}

.page-about .staff-card__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--rock);
}

/* ---------- 口径来源 ---------- */
.page-about .rule-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 3.6vw, 38px);
  align-items: start;
}

/* ---------- 边界清单 ---------- */
.page-about .boundary {
  list-style: none;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--moss);
}

.page-about .boundary__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--moss);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--bone);
}

.page-about .boundary__mark {
  width: 12px;
  height: 2px;
  background: var(--clay);
  margin-top: 13px;
  flex: none;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .partner-grid {
  list-style: none;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .partner-card {
  border: 1px solid var(--moss);
  padding: clamp(18px, 2.6vw, 24px);
  background: linear-gradient(158deg, var(--pitch) 0%, rgba(11, 15, 13, 0) 78%);
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .partner-card:hover {
  border-color: var(--volt);
  transform: translateY(-2px);
}

.page-about .partner-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--bone);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--rock);
}

.page-about .honor-band {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(18px, 2.6vw, 24px);
  border-left: 3px solid var(--card-y);
  background: var(--pitch);
}

.page-about .honor-band__label {
  display: block;
  margin-bottom: 8px;
}

.page-about .honor-band__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--bone);
}

/* ---------- 湖北与服务说明 ---------- */
.page-about .service-card {
  margin-top: clamp(26px, 4vw, 42px);
  background: var(--pitch);
  padding: clamp(20px, 3vw, 32px);
  display: grid;
  gap: 0;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-about .service-card__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--moss);
}

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

.page-about .service-card__row:first-child {
  padding-top: 0;
}

.page-about .service-card__label {
  font-size: 14.5px;
  color: var(--rock);
}

.page-about .service-card__link {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--fluoro);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-about .service-card__link:hover,
.page-about .service-card__link:focus-visible {
  color: var(--volt);
  border-bottom-color: var(--volt);
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 599px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 14px;
  }

  .page-about .pipeline__step {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .page-about .boundary__item {
    grid-template-columns: 16px minmax(0, 1fr);
    gap: 10px;
  }

  .page-about .about-hero__stamp {
    white-space: normal;
  }

  .page-about .chronicle {
    padding-left: 24px;
  }

  .page-about .chronicle__item::before {
    left: -24px;
  }

  .page-about .chronicle__item::after {
    left: -19px;
  }
}

/* ---------- 桌面版式 ---------- */
@media (min-width: 760px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .pipeline__step {
    grid-template-columns: 84px minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(268px, 0.85fr);
    align-items: start;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .rule-grid {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-figure--square {
    max-width: none;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(40px, 5.4vw, 84px);
  }

  .page-about .about-rail {
    position: sticky;
    top: var(--about-sticky);
  }

  .page-about .about-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-toc__item {
    border-bottom: 1px solid var(--about-hair);
  }

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

  .page-about .toc-link {
    display: flex;
    align-items: baseline;
    padding: 10px 0;
    width: 100%;
  }

  .page-about .about-hero__title {
    max-width: 17ch;
  }
}

@media (min-width: 1180px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .partner-card,
  .page-about .staff-card,
  .page-about .toc-link,
  .page-about .chronicle__head,
  .page-about .service-card__link,
  .page-about .breadcrumbs__item a {
    transition: none;
  }

  .page-about .partner-card:hover {
    transform: none;
  }
}
<<<END>>>