.page-about {
  --ab-gap: clamp(20px, 3.4vw, 44px);
  --ab-rail-w: 232px;
  background: var(--bg);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .ab-open {
  padding: clamp(22px, 3.4vw, 40px) 0 clamp(30px, 4.6vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-open__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  margin-top: clamp(18px, 3vw, 38px);
}

.page-about .ab-open__title h1 {
  font-family: var(--font-display);
  font-size: clamp(33px, 6.2vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0.22em 0 0;
  max-width: 15ch;
  color: var(--ink);
}

.page-about .ab-open__lede {
  margin: 1.1em 0 0;
  max-width: 36em;
  font-size: clamp(15.5px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-about .ab-open__media {
  margin: 0;
}

.page-about .ab-open__media img {
  aspect-ratio: 3 / 4;
}

@media (min-width: 900px) {
  .page-about .ab-open__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }
}

/* 首屏数据条 */
.page-about .ab-facts {
  list-style: none;
  margin: clamp(26px, 3.6vw, 50px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 780px) {
  .page-about .ab-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-facts__item {
  background: var(--c-moss);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-facts__num {
  font-family: var(--font-mono);
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--c-signal);
}

.page-about .ab-facts__label {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}

/* ---------- 主体骨架：左窄时间线 + 右宽正文 ---------- */
.page-about .ab-body {
  padding: clamp(34px, 4.6vw, 74px) 0 clamp(46px, 6.4vw, 108px);
}

.page-about .ab-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 60px);
}

@media (min-width: 1000px) {
  .page-about .ab-body__grid {
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-body__rail {
    position: sticky;
    top: 92px;
  }
}

/* 纵向时间线 */
.page-about .ab-target .section-label,
.page-about .ab-body__rail .section-label {
  display: block;
}

.page-about .ab-track {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-about .ab-track__item {
  position: relative;
  padding: 0 0 22px 22px;
}

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

.page-about .ab-track__item:focus-visible {
  outline: 1px solid var(--line-signal);
  outline-offset: 5px;
}

.page-about .ab-track__dot {
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-night);
  border: 1px solid var(--line-strong);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .ab-track__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-signal);
}

.page-about .ab-track__note {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-mute);
  transition: color var(--dur) var(--ease);
}

.page-about .ab-track__item:hover .ab-track__note,
.page-about .ab-track__item:focus .ab-track__note,
.page-about .ab-track__item:focus-within .ab-track__note {
  color: var(--ink-dim);
}

.page-about .ab-track__item:hover .ab-track__dot,
.page-about .ab-track__item:focus .ab-track__dot {
  background: var(--c-signal);
  border-color: var(--c-signal);
  box-shadow: 0 0 0 4px rgba(53, 240, 176, 0.14);
}

/* ---------- 正文章节 ---------- */
.page-about .ab-sec {
  padding-bottom: clamp(30px, 3.8vw, 52px);
  margin-bottom: clamp(30px, 3.8vw, 52px);
  border-bottom: 1px solid var(--line);
}

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

.page-about .ab-sec__marker {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
}

.page-about .ab-sec__no {
  color: var(--c-ember);
}

.page-about .ab-sec__title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0 0 0.72em;
  max-width: 20ch;
  color: var(--ink);
}

.page-about .prose p {
  margin: 0 0 1.05em;
  max-width: 36em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink-dim);
}

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

.page-about .prose a {
  color: var(--c-signal-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-signal);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .prose a:hover,
.page-about .prose a:focus-visible {
  color: var(--c-signal);
  border-bottom-color: var(--c-signal);
}

/* ---------- 覆盖分区矩阵 ---------- */
.page-about .ab-filter {
  margin-top: clamp(22px, 3vw, 36px);
  padding: clamp(15px, 2.3vw, 26px);
  border: 1px solid var(--line);
  background: rgba(30, 58, 49, 0.42);
}

.page-about .ab-filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .ab-filter .filter-chip {
  font-family: var(--font-body);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  padding: 7px 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-dim);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .ab-filter .filter-chip:hover {
  border-color: var(--c-signal-soft);
  color: var(--ink);
}

.page-about .ab-filter .filter-chip[aria-pressed="true"] {
  background: var(--c-signal);
  border-color: var(--c-signal);
  color: var(--c-night);
}

.page-about .ab-zones {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-zone {
  background: var(--c-night);
  padding: 17px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  transition: background var(--dur) var(--ease);
}

.page-about .ab-zone:hover {
  background: var(--c-moss);
}

.page-about .ab-zone[hidden] {
  display: none;
}

.page-about .ab-zone__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-ember);
}

.page-about .ab-zone__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .ab-zone__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--ink-mute);
}

.page-about .filter-empty {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--ink-mute);
}

.page-about .filter-empty[hidden] {
  display: none;
}

/* ---------- 班次 ---------- */
.page-about .ab-shifts {
  list-style: none;
  margin: clamp(20px, 2.8vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-about .ab-shifts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-shift {
  background: var(--c-moss);
  padding: 18px 20px 22px;
}

.page-about .ab-shift__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--c-signal);
}

.page-about .ab-shift__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-dim);
}

/* ---------- 战报结构 ---------- */
.page-about .ab-steps {
  list-style: none;
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  counter-reset: none;
}

.page-about .ab-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 620px) {
  .page-about .ab-step {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

.page-about .ab-step__k {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--c-signal-soft);
}

.page-about .ab-step__v {
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
}

/* ---------- 纠错流程 ---------- */
.page-about .ab-process {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-signal);
  background: var(--c-tunnel);
}

.page-about .ab-process__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .ab-process__list {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: decimal;
}

.page-about .ab-process__list li {
  margin-bottom: 9px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--ink-dim);
}

.page-about .ab-process__list li::marker {
  font-family: var(--font-mono);
  color: var(--c-ember);
}

.page-about .ab-process__list li:last-child {
  margin-bottom: 0;
}

/* ---------- 图片 ---------- */
.page-about .ab-figure {
  margin: clamp(24px, 3.2vw, 38px) 0 0;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--r);
  filter: saturate(0.84) contrast(1.04);
}

.page-about .media__caption {
  margin: 10px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}

.page-about .ab-open__media img {
  aspect-ratio: 3 / 4;
}

/* ---------- 备案区块：视觉最弱 ---------- */
.page-about .ab-sec--filing {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-sec--filing .ab-sec__title {
  font-size: clamp(19px, 2.4vw, 26px);
  color: var(--ink-dim);
}

.page-about .ab-sec--filing .prose p {
  font-size: 14.5px;
  color: var(--ink-mute);
}

/* ---------- 下一步 ---------- */
.page-about .ab-next {
  margin-top: clamp(28px, 3.6vw, 48px);
  padding: clamp(22px, 3vw, 38px);
  border: 1px solid var(--line-signal);
  background: linear-gradient(160deg, rgba(30, 58, 49, 0.9) 0%, rgba(11, 31, 26, 0.95) 100%);
}

.page-about .ab-next__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 30px);
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-about .ab-next__text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
}

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

.page-about .ab-next__actions .btn {
  flex: 0 1 auto;
}

@media (max-width: 480px) {
  .page-about .ab-next__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>