.page-about {
  --about-line: 2px solid var(--green-900);
  --about-gold-line: 1px solid var(--gold);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

/* ── 首屏 ── */
.page-about .about-hero {
  background: var(--green-800);
  color: var(--paper);
  border-bottom: 3px solid var(--gold);
  padding-block: 28px 48px;
}

.page-about .about-hero .breadcrumb__link,
.page-about .about-hero .breadcrumb__current,
.page-about .about-hero .breadcrumb__sep {
  color: var(--sand);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-about .about-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.page-about .about-hero .breadcrumb__link {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-hero .breadcrumb__link:hover,
.page-about .about-hero .breadcrumb__link:focus-visible {
  border-bottom-color: var(--gold);
  color: var(--gold-bright);
}

.page-about .about-hero .eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 68px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--gold-bright);
  text-shadow: 1px 1px 0 var(--green-900);
  max-width: 20ch;
}

.page-about .about-hero__lead {
  margin: 0 0 36px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: #E8E6DC;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  border-top: var(--about-gold-line);
}

.page-about .about-hero__stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 16px 0;
  border-bottom: var(--about-gold-line);
}

.page-about .about-hero__stat dt {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--sand);
}

.page-about .about-hero__stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  color: var(--gold-bright);
  letter-spacing: 0.01em;
}

/* ── 布局 ── */
.page-about .about-layout {
  display: block;
  padding-block: 40px 64px;
}

.page-about .about-toc {
  border: var(--about-line);
  background: var(--sand);
  padding: 16px 18px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--green-800);
}

.page-about .about-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-toc__list a {
  display: inline-block;
  font-size: 14px;
  color: var(--green-800);
  text-decoration: none;
  border-bottom: 1px solid var(--slate);
  padding-bottom: 2px;
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  color: var(--rust-deep);
  border-bottom-color: var(--rust);
}

.page-about .about-section {
  scroll-margin-top: 24px;
  padding-block: 8px 44px;
  border-top: 3px solid var(--green-900);
  margin-bottom: 44px;
}

.page-about .about-section:last-of-type {
  margin-bottom: 24px;
}

.page-about .about-section__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--rust);
}

.page-about .about-section__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.6vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--green-800);
}

.page-about .about-section__lead {
  margin: 0 0 24px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: #2C3336;
}

.page-about .about-section .prose p {
  margin: 0 0 16px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: #1F2528;
}

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

.page-about .about-section a {
  color: var(--rust-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .about-section a:hover,
.page-about .about-section a:focus-visible {
  color: var(--green-800);
}

/* ── 来路 ── */
.page-about .about-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border: var(--about-line);
  background: #FFFFFF;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(20, 24, 26, 0.14);
}

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

.page-about .about-facts__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-about .about-facts__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}

/* ── 时间线 ── */
.page-about .about-timeline__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.page-about .about-timeline__note {
  display: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
  white-space: nowrap;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  border-left: 3px solid var(--gold);
}

.page-about .about-timeline__node {
  position: relative;
  margin-bottom: 16px;
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 18px;
  width: 12px;
  height: 12px;
  background: var(--green-800);
  border: 2px solid var(--gold);
}

.page-about .about-box {
  border: var(--about-line);
  background: #FFFFFF;
  box-shadow: var(--shadow-hard-sm);
  transition: box-shadow 220ms var(--ease-out), transform 220ms var(--ease-out);
}

.page-about .about-box[open] {
  background: var(--paper);
}

.page-about .about-box__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-box__summary:hover {
  background: var(--sand);
}

.page-about .about-box__summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-about .about-box__code {
  background: var(--green-800);
  color: var(--gold-bright);
  border: 1px solid var(--gold);
}

.page-about .mono-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  background: var(--mist);
  color: var(--ink);
}

.page-about .mono-tag--gold {
  background: var(--sand);
  color: var(--green-900);
  border: 1px solid var(--gold);
}

.page-about .about-box__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--green-800);
}

.page-about .about-box__hint {
  flex: 1 1 100%;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-box__panel {
  border-top: var(--about-gold-line);
  padding: 14px 16px 6px;
  background: #FFFFFF;
}

.page-about .about-box__panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-box__panel li {
  position: relative;
  padding: 0 0 12px 18px;
  font-size: 15px;
  line-height: 1.75;
  color: #1F2528;
}

.page-about .about-box__panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--rust);
}

/* ── 配图 ── */
.page-about .about-figure {
  margin: 0 0 24px;
  border: 3px solid var(--green-900);
  background: var(--green-800);
  box-shadow: var(--shadow-hard);
}

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

.page-about .about-figure__caption {
  padding: 10px 14px;
  border-top: 2px solid var(--gold);
  background: var(--green-900);
  color: var(--sand);
  font-size: 13px;
  line-height: 1.6;
}

.page-about .about-figure--wide {
  margin-bottom: 28px;
}

/* ── 归档 ── */
.page-about .about-archive__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-archive__notes {
  border-left: 3px solid var(--gold);
  padding-left: 16px;
}

.page-about .about-subtitle {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  color: var(--green-800);
}

.page-about .about-archive__rules {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-about .about-archive__rules li {
  padding: 0 0 12px 0;
  font-size: 15px;
  line-height: 1.75;
  color: #1F2528;
}

.page-about .about-archive__rules strong {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--rust-deep);
  margin-bottom: 2px;
}

.page-about .about-archive__tip {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #2C3336;
}

.page-about .about-table-wrap {
  margin-top: 28px;
  border: 3px solid var(--green-900);
  background: #FFFFFF;
  box-shadow: var(--shadow-hard);
  overflow-x: auto;
}

.page-about .about-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-table__caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  background: var(--green-800);
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-table thead th {
  background: var(--slate);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 2px solid var(--gold);
  white-space: nowrap;
}

.page-about .about-table tbody th,
.page-about .about-table tbody td {
  padding: 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(91, 107, 122, 0.3);
  color: #1F2528;
  line-height: 1.6;
}

.page-about .about-table tbody tr:nth-child(even) {
  background: var(--mist);
}

.page-about .about-table tbody tr:hover {
  background: var(--sand);
}

.page-about .about-table tbody tr:target {
  background: var(--sand);
  box-shadow: inset 5px 0 0 var(--rust);
}

.page-about .about-table tbody th a {
  text-decoration: none;
  color: inherit;
}

.page-about .about-table tbody th a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-about .about-archive__foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #2C3336;
  max-width: 40em;
}

/* ── 团队 ── */
.page-about .about-figure--team {
  margin-top: 8px;
}

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.page-about .about-team__card {
  border: var(--about-line);
  border-top: 6px solid var(--gold);
  background: #FFFFFF;
  padding: 18px 16px;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-team__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--green-800);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #1F2528;
}

.page-about .about-team__flow {
  margin: 0;
  padding: 16px;
  background: var(--sand);
  border-left: 6px solid var(--rust);
  font-size: 15px;
  line-height: 1.8;
  color: var(--green-900);
}

/* ── 资料怎么来的 ── */
.page-about .about-audit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .about-audit__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--green-900);
}

.page-about .about-audit__step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(20, 24, 26, 0.18);
}

.page-about .about-audit__step-num {
  flex: 0 0 auto;
  background: var(--rust);
  color: #FFFFFF;
  border: 1px solid var(--rust-deep);
}

.page-about .about-audit__step-text {
  font-size: 15px;
  line-height: 1.7;
  color: #1F2528;
}

/* ── 读者 ── */
.page-about .about-readers__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 26px;
}

.page-about .about-readers__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 16px;
  background: var(--green-800);
  border: 2px solid var(--green-900);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-readers__stat--accent {
  background: var(--rust);
  border-color: var(--rust-deep);
}

.page-about .about-readers__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 32px;
  line-height: 1.1;
  color: var(--gold-bright);
}

.page-about .about-readers__stat--accent .about-readers__num {
  color: #FFFFFF;
  font-size: 26px;
}

.page-about .about-readers__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--sand);
}

.page-about .about-readers__stat--accent .about-readers__label {
  color: #FBEDE6;
}

.page-about .about-readers__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-readers__list li {
  padding: 14px 0 14px 18px;
  border-top: 1px solid rgba(20, 24, 26, 0.16);
  position: relative;
  font-size: 15px;
  line-height: 1.8;
  color: #1F2528;
}

.page-about .about-readers__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 8px;
  height: 8px;
  background: var(--gold);
}

.page-about .about-readers__list strong {
  color: var(--green-800);
}

/* ── 结尾行动 ── */
.page-about .about-cta {
  background: var(--green-900);
  border: 3px solid var(--gold);
  padding: 26px 18px;
  box-shadow: var(--shadow-hard);
  color: var(--paper);
}

.page-about .about-cta__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1.25;
  color: var(--gold-bright);
}

.page-about .about-cta__text {
  margin: 0 0 22px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: #E8E6DC;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .btn {
  display: inline-block;
  padding: 11px 20px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 2px solid var(--gold);
  transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

.page-about .about-cta .btn--primary {
  background: var(--rust);
  border-color: var(--rust-deep);
  color: #FFFFFF;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-cta .btn--gold {
  background: var(--gold);
  border-color: var(--gold-bright);
  color: var(--green-900);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-cta .btn--ghost {
  background: transparent;
  color: var(--sand);
}

.page-about .about-cta .btn:hover,
.page-about .about-cta .btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--green-800);
}

.page-about .about-cta .btn:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

/* ── 平板 ── */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding-block: 32px 60px;
  }

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

  .page-about .about-hero__stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 18px 20px 18px 0;
    border-bottom: 0;
    border-right: var(--about-gold-line);
  }

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

  .page-about .about-section__grid {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
  }

  .page-about .about-archive__grid {
    grid-template-columns: 7fr 5fr;
    gap: 30px;
    align-items: start;
  }

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

  .page-about .about-audit__grid {
    grid-template-columns: 7fr 5fr;
    gap: 34px;
    align-items: start;
  }

  .page-about .about-readers__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .about-box__hint {
    flex: 0 1 auto;
  }
}

/* ── 桌面：左侧吸附目录 + 右侧竖排注释 ── */
@media (min-width: 1040px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
    padding-block: 56px 88px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 24px;
    margin-bottom: 0;
    padding: 20px 20px 24px;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 10px;
  }

  .page-about .about-toc__list a {
    font-size: 14px;
  }

  .page-about .about-section {
    padding-block: 12px 56px;
    margin-bottom: 56px;
  }

  .page-about .about-timeline__note {
    display: block;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    padding-top: 8px;
  }

  .page-about .about-timeline__list {
    padding-left: 28px;
  }

  .page-about .about-timeline__node::before {
    left: -39px;
  }

  .page-about .about-box__summary {
    padding: 18px 22px;
  }

  .page-about .about-box__panel {
    padding: 18px 22px 8px;
  }

  .page-about .about-cta {
    padding: 40px 40px 44px;
  }

  .page-about .about-readers__num {
    font-size: 38px;
  }

  .page-about .about-readers__stat--accent .about-readers__num {
    font-size: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-box,
  .page-about .about-cta .btn {
    transition: none;
  }

  .page-about .about-cta .btn:hover,
  .page-about .about-cta .btn:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>