.page-about {
  background: var(--void);
  color: var(--cream);
  padding-top: calc(var(--rail-h) + 78px);
}

.page-about .about-crumb {
  padding-bottom: 22px;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

/* ---------- 首屏框景 ---------- */

.page-about .about-hero__frame {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 42px 22px 30px 30px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(16, 21, 18, 0.94), rgba(7, 9, 7, 0.88));
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(to right, var(--grid) 0 1px, transparent 1px 28px);
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  top: 9px;
  bottom: 9px;
  left: 0;
  width: 9px;
  background-image: repeating-linear-gradient(to bottom, var(--grid) 0 1px, transparent 1px 22px);
  pointer-events: none;
}

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

.page-about .about-hero__stamp {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-hero__rule {
  display: block;
  height: 1px;
  width: 100%;
  background: linear-gradient(to right, var(--neon) 0 26%, var(--line) 26% 100%);
}

.page-about .about-hero__facts {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-hero__facts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-hero__facts dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--neon);
}

.page-about .about-hero__lede h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-about .about-hero__lede > p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream-soft);
}

.page-about .about-hero__lede .about-hero__sub {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 档案区：刻度轨道 + 内容流 ---------- */

.page-about .about-archive {
  margin-top: 76px;
  padding-top: 52px;
  border-top: 1px solid var(--line);
}

.page-about .about-archive__grid {
  display: grid;
  gap: 34px;
}

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

.page-about .about-rail__head {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-rail__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__list::before {
  content: none;
}

.page-about .about-rail__link {
  position: relative;
  display: block;
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(184, 255, 60, 0.06);
}

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

.page-about .about-entry {
  padding-top: 34px;
  padding-bottom: 48px;
  border-top: 1px solid var(--line);
}

.page-about .about-stream > .about-entry:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-entry__head {
  margin-bottom: 18px;
}

.page-about .about-entry__year {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.page-about .about-entry__title {
  margin: 0;
  max-width: 30ch;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-about .about-entry__body p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream-soft);
}

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

.page-about .about-entry__media {
  margin: 22px 0 0;
}

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

/* ---------- 记录体系步骤 ---------- */

.page-about .about-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-step__year {
  margin: 0;
  padding-top: 24px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-about .about-step__body {
  margin: 18px 0 18px 14px;
  padding: 18px 18px 16px;
}

.page-about .about-step__body h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.4;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(36, 28, 22, 0.86);
}

/* ---------- 团队分工表 ---------- */

.page-about .about-team {
  width: 100%;
  margin-top: 26px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-team thead th {
  padding: 10px 16px 12px 0;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team tbody th,
.page-about .about-team tbody td {
  padding: 15px 16px 15px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-team tbody th {
  width: 26%;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-team tbody td {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team td.about-team__num {
  width: 88px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neon);
}

/* ---------- 数据与合作 ---------- */

.page-about .about-data {
  display: grid;
  gap: 28px;
}

.page-about .about-data__text p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream-soft);
}

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

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

.page-about .about-signal {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.page-about .about-signal li {
  padding: 18px 16px 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-signal__num {
  display: block;
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--neon);
}

.page-about .about-signal__label {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 江西与合规 ---------- */

.page-about .about-local {
  display: grid;
  gap: 28px;
}

.page-about .about-local__text p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream-soft);
}

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

.page-about .about-local__card {
  padding: 24px 22px;
}

.page-about .about-local__card h3 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-local__list {
  margin: 0 0 16px;
  padding: 0;
}

.page-about .about-local__list div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(36, 28, 22, 0.16);
}

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

.page-about .about-local__list dt {
  flex: 0 0 74px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(36, 28, 22, 0.62);
}

.page-about .about-local__list dd {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  word-break: break-word;
}

.page-about .about-local__note {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(36, 28, 22, 0.72);
}

/* ---------- 里程碑收束 ---------- */

.page-about .about-endcap {
  margin-top: 84px;
  padding: 60px 0 78px;
  background: var(--cream);
  color: var(--ink);
  border-top: 1px solid var(--line);
}

.page-about .about-endcap__head {
  align-items: flex-end;
}

.page-about .about-endcap .eyebrow {
  color: rgba(36, 28, 22, 0.6);
}

.page-about .about-endcap .section-title {
  color: var(--ink);
}

.page-about .about-endcap__hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(36, 28, 22, 0.62);
}

.page-about .about-endcap__figure {
  margin: 26px 0 0;
}

.page-about .about-endcap a:focus-visible {
  outline-color: var(--neon-deep);
}

.page-about .about-track {
  list-style: none;
  margin: 30px 0 0;
  padding: 0 0 10px;
  display: flex;
  align-items: start;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-track__item {
  flex: 0 0 234px;
  scroll-snap-align: start;
  min-width: 0;
}

.page-about .about-track__link {
  display: block;
  padding: 18px 16px 20px;
  border: 1px solid rgba(36, 28, 22, 0.22);
  background: rgba(255, 255, 255, 0.5);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-track__link:hover,
.page-about .about-track__link:focus-visible {
  border-color: var(--neon-deep);
  background: rgba(255, 255, 255, 0.96);
  transform: translateY(-2px);
}

.page-about .about-track__year {
  display: block;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.page-about .about-track__dot {
  display: block;
  width: 7px;
  height: 7px;
  margin: 12px 0;
  background: var(--neon-deep);
}

.page-about .about-track__title {
  display: block;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-track__more {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(36, 28, 22, 0.78);
  transition: max-height 0.3s var(--ease), opacity 0.22s var(--ease), margin-top 0.3s var(--ease);
}

.page-about .about-track__link:hover .about-track__more,
.page-about .about-track__link:focus-visible .about-track__more {
  max-height: 160px;
  margin-top: 10px;
  opacity: 1;
}

/* ---------- 桌面端栅格 ---------- */

@media (min-width: 720px) {
  .page-about .about-hero__frame {
    grid-template-columns: minmax(228px, 3.2fr) minmax(0, 8fr);
    gap: 46px;
    padding: 54px 42px 44px 42px;
  }

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

  .page-about .about-signal li {
    padding: 20px 18px 18px 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-about .about-signal li:nth-child(2n) {
    border-right: 1px solid var(--line-soft);
  }

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

  .page-about .about-step {
    grid-template-columns: 108px minmax(0, 1fr);
  }

  .page-about .about-step__year {
    font-size: 16px;
  }

  .page-about .about-step__body {
    margin: 20px 0 22px 28px;
    padding: 22px 24px 20px;
  }

  .page-about .about-team thead th,
  .page-about .about-team tbody th,
  .page-about .about-team tbody td {
    padding-right: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-entry--split {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    column-gap: 46px;
    align-items: start;
  }

  .page-about .about-entry--split .about-entry__head {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-about .about-entry--split .about-entry__body {
    grid-column: 1;
    grid-row: 2;
  }

  .page-about .about-entry--split .about-entry__media {
    grid-column: 2;
    grid-row: 2;
    margin: 0;
  }

  .page-about .about-data,
  .page-about .about-local {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .about-endcap__head {
    display: flex;
    justify-content: space-between;
    gap: 32px;
  }

  .page-about .about-endcap__hint {
    margin: 0;
    text-align: right;
    white-space: nowrap;
  }

  .page-about .about-track {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-track__item {
    flex: none;
  }

  .page-about .about-team td.about-team__num {
    width: 100px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-archive__grid {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 58px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 110px;
    align-self: start;
  }

  .page-about .about-rail__list {
    display: block;
    overflow: visible;
  }

  .page-about .about-rail__list::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: var(--line);
  }

  .page-about .about-rail__link {
    padding: 7px 0 7px 22px;
    border: 0;
    background: none;
    font-size: 13.5px;
  }

  .page-about .about-rail__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 15px;
    width: 11px;
    height: 1px;
    background: var(--grid);
    transition: background-color 0.18s var(--ease), width 0.18s var(--ease);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border: 0;
    background: none;
  }

  .page-about .about-rail__link:hover::before,
  .page-about .about-rail__link:focus-visible::before {
    width: 15px;
    background: var(--neon);
  }
}

/* ---------- 窄屏团队表折叠为卡片 ---------- */

@media (max-width: 719px) {
  .page-about .about-team,
  .page-about .about-team tbody,
  .page-about .about-team tr,
  .page-about .about-team th,
  .page-about .about-team td {
    display: block;
    width: 100%;
  }

  .page-about .about-team thead {
    display: none;
  }

  .page-about .about-team tbody tr {
    margin-bottom: 12px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    background: var(--panel);
  }

  .page-about .about-team tbody th,
  .page-about .about-team tbody td {
    padding: 4px 0;
    border-bottom: 0;
  }

  .page-about .about-team tbody th {
    padding-bottom: 9px;
    margin-bottom: 7px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
  }

  .page-about .about-team td.about-team__num {
    font-size: 26px;
  }

  .page-about .about-team td[data-label]::before {
    content: attr(data-label) " · ";
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--muted);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track__link,
  .page-about .about-track__more,
  .page-about .about-rail__link,
  .page-about .about-rail__link::before {
    transition: none;
  }

  .page-about .about-track__link:hover,
  .page-about .about-track__link:focus-visible {
    transform: none;
  }
}