.page-about {
  --ab-gap: clamp(16px, 2.6vw, 36px);
  --ab-line-soft: rgba(42, 58, 85, 0.75);
  background: var(--ink);
  color: var(--body-c);
}

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

.page-about .ab-cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.4vw, 56px) 0 clamp(34px, 5.6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 82% at 82% -6%, rgba(198, 255, 61, 0.12), transparent 58%),
    radial-gradient(90% 70% at 8% 110%, rgba(255, 122, 41, 0.09), transparent 62%),
    linear-gradient(180deg, var(--stand) 0%, var(--ink) 78%);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .ab-rail-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

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

.page-about .ab-year {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.page-about .ab-year:hover,
.page-about .ab-year:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(198, 255, 61, 0.07);
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-about .ab-hero__title {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 17ch;
}

.page-about .ab-hero__lede {
  max-width: 40em;
  color: var(--body-c);
}

.page-about .ab-metabar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-metabar li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-left: 2px solid var(--steel);
  background: rgba(22, 34, 58, 0.55);
}

.page-about .ab-metabar__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .ab-metabar__v {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .ab-hero__media {
  position: relative;
  margin: 0;
}

.page-about .ab-hero__media::before,
.page-about .ab-hero__media::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--neon);
  pointer-events: none;
}

.page-about .ab-hero__media::before {
  top: 8px;
  left: 8px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .ab-hero__media::after {
  right: 8px;
  bottom: 34px;
  border-left: 0;
  border-top: 0;
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
}

/* ---------- 通用章节骨架 ---------- */

.page-about .ab-sec {
  padding: clamp(38px, 6vw, 88px) 0;
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .ab-sec:last-of-type {
  border-bottom: 0;
}

.page-about .ab-sec__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}

.page-about .ab-sec__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .ab-sec__label span {
  color: var(--neon);
  margin-right: 8px;
}

.page-about .ab-sec__body .h2 {
  margin: 0 0 22px;
  max-width: 20ch;
  color: var(--paper);
}

.page-about .ab-sec__body .prose {
  max-width: 40em;
  margin: 0 0 18px;
}

.page-about .ab-sec__body .prose:last-child {
  margin-bottom: 0;
}

.page-about .ab-sec__body .h3 {
  margin: 0 0 10px;
  color: var(--paper);
}

/* ---------- 栏目坐标 ---------- */

.page-about .ab-coord-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  margin-top: 28px;
}

.page-about .ab-coords {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}

.page-about .ab-coord {
  padding: 16px 16px 18px;
  background: var(--stand);
  border: 1px solid var(--line);
  border-top: 3px solid var(--sw, var(--neon));
  transition: background-color var(--dur) ease, border-color var(--dur) ease, transform var(--dur) ease;
}

.page-about .ab-coord:nth-child(1) { --sw: var(--neon); }
.page-about .ab-coord:nth-child(2) { --sw: var(--orange); }
.page-about .ab-coord:nth-child(3) { --sw: var(--signal); }
.page-about .ab-coord:nth-child(4) { --sw: var(--neon); }
.page-about .ab-coord:nth-child(5) { --sw: var(--orange); }
.page-about .ab-coord:nth-child(6) { --sw: var(--signal); }

.page-about .ab-coord:hover {
  background: var(--steel);
  border-color: var(--sw, var(--neon));
}

.page-about .ab-coord__code {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sw, var(--neon));
  margin-bottom: 8px;
}

.page-about .ab-coord__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .ab-coord__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
  transition: color var(--dur-fast) ease;
}

.page-about .ab-coord:hover .ab-coord__note {
  color: var(--body-c);
}

.page-about .ab-coord-media {
  margin: 0;
}

.page-about .ab-coord-media img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
}

/* ---------- 编辑部 ---------- */

.page-about .ab-team-media {
  margin: 28px 0 26px;
}

.page-about .ab-team-media img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .ab-teams {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-about .ab-team {
  padding: clamp(16px, 2.2vw, 26px);
  background: var(--stand);
  border: 1px solid var(--line);
}

.page-about .ab-team__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.page-about .ab-team p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-c);
}

/* ---------- 数据来源 ---------- */

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: var(--steel);
}

.page-about .ab-stat__n {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

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

/* ---------- 时间线 ---------- */

.page-about .ab-timeline {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--line);
}

.page-about .ab-tl {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 42px);
  scroll-margin-top: calc(var(--bar-h) + 28px);
}

.page-about .ab-tl:last-child {
  padding-bottom: 0;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--signal);
  border: 1px solid var(--ink);
  transition: background-color var(--dur-fast) ease, transform var(--dur-fast) ease;
}

.page-about .ab-tl::after {
  content: "";
  position: absolute;
  left: -21px;
  top: 10px;
  width: 16px;
  height: 1px;
  background: var(--line);
}

.page-about .ab-tl__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-about .ab-tl p:last-child {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-c);
}

.page-about .ab-tl:target::before {
  background: var(--neon);
  transform: scale(1.25);
}

.page-about .ab-tl:target .ab-tl__year {
  color: var(--paper);
}

/* ---------- 结语 ---------- */

.page-about .ab-sec--close {
  background:
    radial-gradient(80% 120% at 88% 0%, rgba(53, 229, 192, 0.09), transparent 62%),
    var(--stand);
  border-top: 1px solid var(--line);
}

.page-about .ab-close {
  border-left: 1px solid var(--line);
  padding-left: clamp(16px, 3vw, 32px);
}

.page-about .ab-close .h2 {
  margin: 0 0 22px;
  max-width: 18ch;
  color: var(--paper);
}

.page-about .ab-close .prose {
  max-width: 40em;
  margin: 0 0 18px;
}

.page-about .ab-close__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-about .ab-close__acts .btn {
    min-width: 168px;
  }
}

@media (min-width: 880px) {
  .page-about .ab-sec__grid {
    grid-template-columns: minmax(0, 0.26fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 64px);
  }

  .page-about .ab-sec__side {
    position: sticky;
    top: calc(var(--bar-h) + 26px);
    align-self: start;
  }

  .page-about .ab-sec__label {
    margin-bottom: 0;
  }

  .page-about .ab-teams {
    grid-template-columns: 1.15fr 0.95fr 0.95fr;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 78px minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(20px, 3vw, 44px);
    align-items: end;
  }

  .page-about .ab-years {
    flex-direction: column;
    gap: 6px;
  }

  .page-about .ab-year {
    justify-content: flex-start;
    min-height: 0;
    padding: 4px 0 4px 10px;
    border: 0;
    border-left: 2px solid var(--line);
    background: none;
    font-size: 12px;
    letter-spacing: 0.1em;
  }

  .page-about .ab-year:hover,
  .page-about .ab-year:focus-visible {
    background: none;
    border-left-color: var(--neon);
    border-color: var(--line);
    outline-offset: 4px;
  }

  .page-about .ab-hero__media::after {
    bottom: 36px;
  }
}

@media (min-width: 1060px) {
  .page-about .ab-coord-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-year,
  .page-about .ab-coord,
  .page-about .ab-coord__note,
  .page-about .ab-tl::before {
    transition: none;
  }
}
<<<END>>>